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15 June 2007, Volume 26 Issue 3 Previous Issue    Next Issue

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Analysis of Core-concrete Constitutive Relationship of Big Diameter Concrete-filled Steel Tube under Axial Compression WANG Zhi-hui，XIANG Yang-kai，GU An-bang，LAN Xiang-yu 2007, 26(3): 1-4.  Abstract ( )   PDF (241KB) ( )   A constitutive relationship of core-concrete which suits to the big diameter concrete-filled steel tube was set forth through some widely applicable models as well as the methods of experiments and numerical analysis.The effects of diameter to model are given through axial compression experiments of diferent diameters samples. References | Related Articles | Metrics

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Analysis of Seismic Response of Long-span Arch Bridge ZHANG Xin ，ZHOU Zhi xiang ，SONG Lei 2007, 26(3): 5-9.  Abstract ( )   PDF (292KB) ( )   Taking Tibetan Nimu bridge as an object，and using the finite element soft，a mode and dynamic analysis was siren．By simulating the seismic responses，the characteristic of the bridge Was acquired and the TMD system was applyed to control the seismic responses of the bridge．The main vibration mode Was confirmed by the method of mod al mass ratio．The optimal param eters of TMD，when attained，were simulated into the finite element moda1．At last，the conclusion that fixing TMD in arch bridge is an efective passive vibration control method to reduce the seismic response of the structure，which is verified by the time-marching analysis result． References | Related Articles | Metrics

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Dynamic Characteristic Analysis of Single-column Pylon of Single-Cable-plane Cable-stayed Bridge WANG Xin-zhong ，ZHOU Shui-xing，LIU Qi 2007, 26(3): 10-12.  Abstract ( )   PDF (157KB) ( )   The natural frequency and vibration mode are the principal modal parameters for representing structure dynamic behavior and the impeaant basis for evaluating bridge dynamic performance．A three-dimensional finite element model for single pylon cable-stayed bridge with ANSYS procedure Was created to analyze the dynamic performan ce of Shizhou Cable-Stayed Bridge in Enshi City．The result enunciates that the torsion modal appears early，and the lord across eonseeution with extension makes the lord across horizontal benting of the first modal，which could serve as reference for the analysis of dynamic behavior of similar bridges． References | Related Articles | Metrics

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Static Analysis of Unidirectional Slope Cable-stayed Bridge during System Transformation WANG Wei-sheng，ZHOU Shui-xing，WANG Xin-zhong，LIU Su-ling 2007, 26(3): 13-16.  Abstract ( )   PDF (188KB) ( )   When the system of a unidirectional slope cable-stayed bridge transfers from the fixed state into the floating one， there ale the balancdess impulsive forces at every fixed spot because of the unidirectional s1ope．By the finite element analysis model of the main bridge in ANSYS，the effects which the force had taken on the internal forces and the displacements of the structure were analyzed．On the basis of these，the transformation sequence project is put forward to reduce adverse effects． References | Related Articles | Metrics

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Influences of the Geometric Nonlinear on the Stablity of Long-span Cable-stayed Bridges XIAO Guang-hong ，ZHANG Qiu-1ing ，HUANG Ming-hai 2007, 26(3): 17-19.  Abstract ( )   PDF (232KB) ( )   Based on the Chongqing Fengjie Yangtze River Bridge with span of 460m，the influences of Geometry linear and nonlinear on the stability of long-span cable-stayed bridge was analysed in the construction stage and the service stage．The stability of the bridge was evaluated with calculating results from software ANSYS. References | Related Articles | Metrics

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Causes and Precaution for Concrete Cracks in Skewback Foundation of the Wentanghe Bridge HU Ji-long ，WANG Chun-mei 2007, 26(3): 20-23.  Abstract ( )   PDF (200KB) ( )   The skewback foundation of super large span arch bridge belongs to voluminous concrete structures，and a great deal of hydrated heat is generated during constructing，and a biggish diference in temperature between inside and outside of the concrete constructure is formed.Consequently，the diference intemperatures may lead to cracks due to thermal stress with diferent depths．Taking the construction techniques of skewback foundation of Wentanghe Bridge，a super large span arch bridge of Yulin Expressway in Chongqing，for example，the therm al stress and presented preventive measures and construction methods for the thermal cracks of mass concrete were analyzed and figured out. References | Related Articles | Metrics

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Torsion-control Analysis of Box-girder Bridge of Anisomerous Variable Section at the Stage of the Balanced Cantilever Construction DENG Xue-tao，ZENG De-rong，LIU Hong-wei 2007, 26(3): 24-28.  Abstract ( )   PDF (304KB) ( )   Based on the dimensional theory method，the theory of shearing force flows and Prandtl'S soapfilm analogy method，formulas for calculating torsional an gle and shearing force of box beam 6f anisomerous variable section at the stage of the balanced eantilever construction were inferred．By means of the formulas ，the torsion，distortion and internal force of the box beam of Chongqing Yudong Changjiang Bridge at the stage of balanced cantilever were calculated and analysed．The calctdationval result validates that the torque which is produced because the dead load and the constructing load distribute anisomerously has few torsion an d distortion on the box beam，and that internal force on the box beam is in the controllable area． References | Related Articles | Metrics

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Structure Analysis and Construction Cntrols during Hoisting and Installation of Structural Member of Heyang Bridge LIU Xiao-yu， TANG Wan-min 2007, 26(3): 29-32.  Abstract ( )   PDF (208KB) ( )   Through the structure analysis in the stage of building in arch member and monitoring，combined with parameters in the process of hoisting and installation of structural member and component in Heyang Jialingjiang CFST bridge，a conclusion is siven that the construction-control technology plays an important role in security，lineshape of bridge in process of hoisting and installation of structural member and component. References | Related Articles | Metrics

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The Select and Design of the Traveler of Wujiang Second Bridge in Fuling LI Xiao-liang，XIANG Guang-hong，ZHANG Qiu-ling 2007, 26(3): 33-35.  Abstract ( )   PDF (174KB) ( )   Presents the main girder structure of Fuling Wujiang Second Bridge，which is prestressed concrete cable。stayed bridge with twin pylons and single cable plane．Based on the comparison with the Yamen Bridge in Guangdong，the traveler construction scheme of the Wujiang Second Bridge was designed，and the design of the traveler was introduced in detail. References | Related Articles | Metrics

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Study on the Construction Control Project for Chongqing Yudong Bridge ZENG De-rong，LIU Hong-wei，DENG Xue-tao 2007, 26(3): 36-40.  Abstract ( )   PDF (294KB) ( )   Yudong Bridge is an important engineering in Chongqing，which owns the charaters of big spans，nonsymmetry of section and high piers．A scheme of construction control project for the bridge is introduced. References | Related Articles | Metrics

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Analysis of Arch Bridge Dynamic Properties by Resonant Vibration ZHOU Bing，SHI Shang-wei 2007, 26(3): 41-43.  Abstract ( )   PDF (214KB) ( )   Based on the resonant tests with running and braking trucks on the main span of Chongqing Tongliang County Zhu-bao Arch Bridge，the dynamic parameters including deflections and stresses were acquired，and the structural free vibration frequencies and damping coefficients were analyzed through the time-domain method and Fast Fourier Transforms(FFT)，and the bridge carrying capacity was evaluated according to its dynamic responses and modal parameters.Those provide the structural analysis with reasonable supports. References | Related Articles | Metrics

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Application of Embedded Database to Real-time Monitoring System of Bridges ZHUANG Zhi ，GUO Sheng 2007, 26(3): 44-47.  Abstract ( )   PDF (239KB) ( )   Features of embedded database and system structure of Berkeley DB are introduced.Combined with the requirement of the real-time monitoring system of bridge，a monitoring system structure of bridge Was designed based on embedded database- Berkeley DB ，and the key realization code of data processing in Berkeley DB Was given.Finally the expansibility and developing problem of the structure system are discussed simply. References | Related Articles | Metrics

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Pavement Performance and Microstructure of SBS Modified Asphalt XIONG Ping ，HAO Pei-wen 2007, 26(3): 48-54.  Abstract ( )   PDF (329KB) ( )   The influence of processing technique parameters and SBS modifier sorts on the SBS modified asphalts' performance were studied，and the mierostructure of SBS modified asphalts was observed through fluoro-microscope and Scan Electric Microscope，thus to direct modified asphalt production.Theoretical research combined experimental methods Was adopted. The results show that the processing technique is relatively the most important factor for the pavement performance，and the pavement performance is fine and its microstructure unfolds relatively homogeneous phases，while its storage stability shows wel1.Furthermore，the shearing temperature should not be too low when taking the synthesized performance into account. Therefore，improving processing technique through adding proper stabilizer and compatilizer is one of the most effective way to upgrade the pavement performance of SBS modified asphalt. References | Related Articles | Metrics

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Water Susceptibility and Crack Resistance at Low Temperature of Semi-flexible Pavement ZHANG Da-ke ，CHENG Chang-qing ，WU Guo-xiong ，HU Ling-ling ，ZHANG Yang 2007, 26(3): 55-57.  Abstract ( )   PDF (218KB) ( )   Semi-flexible pavement is generally described as an open-graded asphalt concrete mixture，which is filled with Portland cement grout.It is a composition pavement that owns an unique combination of asphalt concrete and Portland cement concrete materials in the same layer.The retain stability and improved Lottoman test were used to measure the water susceptibility of semi-flexible pavement mixture.The split test was carried out to measure the crack resistance at low temperature．The results show that the semi-flexible pavement mixture has better water susceptibility and crack resistance performance. References | Related Articles | Metrics

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Technology for Low Noise and High Anti-skidding Exposed-aggregate Cement Concrete Pavement SONG Yong-chao，LIANG Nai-xing 2007, 26(3): 58-61.  Abstract ( )   PDF (241KB) ( )   Through simulating test in the laboratory,further anti-skidding performance of exposed-aggregate cement concrete pavement was studied.The first step was to select three kinds of coarse aggregate with different gradations，then each one selected three different fine·coarse aggregate ratios，which separately mixed with other materials an d to form into the exposed-aggregate cement concrete pavement，According to the work ability of cement concrete，strength and anti-skidding performance of exposed·aggregate cement concrete pavement，the optimum gradation of coarse aggregate and appropriate fine-coarse aggregate ratio were determined.The results indicate that the optimum gradation of aggregate plays an important role in surface uniform coarseness and in surface anti-skidding performance towards exposed-aggregate cement concrete pavement，which is of excellent performance. References | Related Articles | Metrics

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Application of Fiber Concrete to Preventing the Reflected Crack in the old Cement Concrete MENG Yun，JIANG Bo 2007, 26(3): 62-64.  Abstract ( )   PDF (232KB) ( )   Adding the bituminous mixtures on the old cement concrete in order to turn the white pavement to the black one， the most difficult problem is the old cracks and cross cracks reflecting to the new pavement.The Reinforced Powder Fiber Concrete is brought forward that sloves such road problems of S108 from Mafang to Dingiia. References | Related Articles | Metrics

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Practices of Paving Asphalt Concrete Coverage on the Deterioration Portland Cement Concrete Pavement YANG Xi-WU 2007, 26(3): 65-68.  Abstract ( )   PDF (282KB) ( )   Introduces the practices of paving asphalt concrete coverage on the deterioration rigid pavement，the deterioration state investigation，reasons analyses of concrete pavement deterioration and the thickness and fracture-prevent methods of asphalt concrete coverage.The field application result shows that paving asphalt concrete coverage on the deterioration rigid pavement can obtain good effect under the condition that the cracking and breaking labs are fitly repaired. References | Related Articles | Metrics

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Practice of Improving the Anti-slipping Performance of Expressway Tunnel Cement Concrete Road Surface XU Zhong-yang 2007, 26(3): 69-72.  Abstract ( )   PDF (235KB) ( )   Combined with the project practice，the reasons why the anti-slipping performance of an expressway tunnel concrete road surface can’t satify the driving request were analyzed.The anti-slipping problem could be solved by sealing the road layer with modifyed asphalt and artificial chiseling.The practice shows that the methods are effective to improve the anti-slipping performance with obvious benefit to both economy and society. References | Related Articles | Metrics

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Cenetic Analysis of Asphalt Pavement Major Breaking in Plateau-cold Region AI Chang-fa ，HUANG Bing ，SONG Qiong-yao ，LIU Hong-po ，QIU Yan-jun 2007, 26(3): 73-77.  Abstract ( )   PDF (338KB) ( )   On the basis of the damage investigation data of asphalt pavements in Plateau-Cold Region，the forms of the asphalt pavement breaking were described and the contributing factors of them were analyzed，and the major forms of breaking in this region were summarized by summing up the investigation data.The conclusions can direct the material research and design of asphalt pavement structure，and Can be good reference for design not only in Plateau-Cold Region but also in similar climate regions. References | Related Articles | Metrics

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Application of Snowmelt Agents to Pavement Snow-removing and the Prevention of Its Disservice on Environment FAN Jie ，MA Ying 2007, 26(3): 78-81.  Abstract ( )   PDF (226KB) ( )   Introduced the main elements of snowmeh agents and the snow melting mechnism，and analyzed the main reasons for the damage to the layers of roads and bridges when using the snowmeh agents excessively.The layers of roads and bridges could be corroded and destroyed if amounts of salinity infiltrate permeate into the road and bridge，and the plants here could be shrivel and perished．Then the preventing methods are suggested. References | Related Articles | Metrics

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Recycling Technology for Asphalt Concrete Pavement and Its Development in Overseas FAN Tong-Jiang，XU Dong-liang，JIA Jing·peng，CHEN Fu-qiang 2007, 26(3): 82-87.  Abstract ( )   PDF (368KB) ( )   Recycling and properly utilizing old asphalt concrete pavements has many advantages that can not only conserves diminishing resource of aggregate and petroleum asphalt and save energy，decrease cost，but also lessens occupied sites and protect environment．So it is widely welcomed both in domestic and in overseas．Simply the recycling technique，the mix design，the performan ce of mixtures，the needed component parts of construction equipment and quality control，etc are presented including different recycling and re-utilizing technology for old asphalt concrete pavement． References | Related Articles | Metrics

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The Situ Measurement to the Mechanical Parameters of Roadbed Soil in Permafrost and Analysis of the Deformation Modulus HUANG Ming-kui，ZHANG Xue-fu 2007, 26(3): 88-91.  Abstract ( )   PDF (213KB) ( )   Based on the results of the roadbed soil through plate loading test，under the environment of the permafrost，the mechanical parameters such as bearing capacity，deformation modulus，shear modulus were analyzed and determined after the roadbed soil experienced a freezing and thawing cycle.The displacement and deformation model of soil was discussed and its correctness was proved.Th e results indicate that the way that the freezing soil are regard a8 a three-dimensional and elastic continuous medium is reasonable.Th e theoretical values of the deformation are agreement with the measuring values. References | Related Articles | Metrics

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Sensitivity Analysis of Design Parameters and Classification on Subgrade Strength Grades in West County Highway KONG Xiang-chen ，WU Xiao-wei ，WANG Jia-long ，HE Zhao-yi 2007, 26(3): 92-95.  Abstract ( )   PDF (218KB) ( )   Sensitivity analysis of the asphalt pavement typical structure design parameters in west county highway Was mainly done.Through the research on the influence of the changes of base and pavement design param eters(1ayer thickness and material modulus)on the highway base and pavement performance，the change rule between the layer design param eters and pavement strength could be found，and the sensitive layer of pavement might be also decided．Recommends the pavement design param eters for the classification on subgrade strength grades and pavement structure design. References | Related Articles | Metrics

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Mechanism Study on Dynamic Instability of Roadbed along the Rivers of Mountainous Highway(1)：The Water Seepage in Rock-soil Mass HU Yuan-xin ，CHAI He-jun 2007, 26(3): 96-102.  Abstract ( )   PDF (386KB) ( )   The former researches about unstable failure of roadbed Mong rivers in the mountainous area are limited in the surface． water erosion，and don't reveal the immanent instability mechanism of roadbed along rivers．From the point of water seepage in rock-soil mass，the deform ation and damage of rock-soil mass because of the changes of pore-pressure and osmotic-pressure were summaried，and kinds of harmful efects because of the underwater were concluded． References | Related Articles | Metrics

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Study on the Fuzzy Control of Expressway Ramp Based on the Red Time Lengthening XU Wang-tu，SONG Rui 2007, 26(3): 103-107.  Abstract ( )   PDF (243KB) ( )   The fuzzy control method of urban intersection was applied to expressway ramp control，and at the same time，the control algorithm which adjusted cycle by lengthening red time and designed fuzzy controller according to waving of occupancy rate was put forward．The intelligentizing of ramp control was studied．At the end，simulation of this fuzzy algorithm was calried out with PC，then the result was compared to that of the classic model of the ramp contro1．From that we make a conclusion that this algorithm is better than the common ones． References | Related Articles | Metrics

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Analysis of Traffic Flow Characteristics of Urban Expressway in Shanghai JIYANG Bei-bei，DU Yu-chuan，SUN Li-jun 2007, 26(3): 108-111.  Abstract ( )   PDF (324KB) ( )   The volume，density and speed of space area were defined over again based on the conception of equivalent capacity and the formulas were put forward．Making use of collected traffic flow inform ation of urban expressway，the trafic flow characteristics of urban expressway in Shan ghai were analyzed based on the essential trafic flow parameters of space area，after defining the time interval and choosing appropriate expressway sections．Then the operation situation of expressway was obtained and base models based on three basic traffic flow parameters were set up． References | Related Articles | Metrics

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Rea1-time Forecast 0f Traffic Flow Based on ANFIS and Its Realization by MATLAB ZHANG Zhi-hong，HAN Zhi，XIAO Sheng-xie，CHANG Gui-zhi，GAN Shou-wa 2007, 26(3): 112-115.  Abstract ( )   PDF (231KB) ( )   By analyses of the advantages and limitations of the fuzzy inference-forecast model and the neural network forecast model，the ANFIS forecast model Was applyed to combinging the two models，exerting their advantages and fetching up their limitations each other．And the conclusion is demonstrated that the ANFIS forecast model can predict the trafic flow more intuitionally and more precisely． References | Related Articles | Metrics

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Calamities and Countermeasures Analyses of National and Provincial Arterial Roads in Chongqing Municipality ZHAO Li-jie ，ZHANG Mao-hui ，LI Shu-qing 2007, 26(3): 116-122.  Abstract ( )   PDF (400KB) ( )   Focusing on the calamities of the national and provincial arterial roads in Chongqing municipality，specifically on the aspects as the characteristics，the typology，the spatial distribution，the formation mechanism and the counterm easures，the conclusion that the arterial roads here are of high frequency of calamities and obvious spacial distribation charcter is summerized．And after analyzing the causes of the calamities here，the counterm easures are set forth including paying attention to the geology exploration，rationally programming，controlling the builders activity and constraction qulity，strengthening the calamity distribution and time forecasting ability． References | Related Articles | Metrics

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Application of High Accuracy GPS Data Process Method to Highway Measurement CHU Dong 2007, 26(3): 123-126.  Abstract ( )   PDF (178KB) ( )   Aiming at the requirement of point accuracy in highway measurement，a GPS data process method is introduced based on a carrier phase linear composing and GAMIT software．The result shows that thiS method could get more accuracy for GPS positioning．The base-line accuracy comes to 2 em when the base-line in several kilometers，which meets the demand of highway control measurement． References | Related Articles | Metrics

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The Reason for Financial Efectiveness Estimate Index Deviation of Freeway Project ZENG Yue-lin，LIU Lang 2007, 26(3): 127-129.  Abstract ( )   PDF (236KB) ( )   The frame of freeway financial effectiveness estimate index system was defined．Taking Yu-He Freeway project for example，by analyzing the efectiveness index，the main factors which affect the variation of effectiveness estimate index and the deep reason for that were found out． References | Related Articles | Metrics

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Method of the Minimum Restriction Bid Evaluation on Base Amount YANG Bo ，LIU Fang-qiang ，ZHOU Gao-ping，GONG Hong-bing 2007, 26(3): 130-132.  Abstract ( )   PDF (177KB) ( )   Method of the minimum restriction bid evaluation on base amount is an improved one on basis of the method that the reasonable lowest price wins a bid、This method prescribes that the valid lowest price wins a bid．The basic principle and the bid evaluation procedure of the method were analyzed，and its advantages and advertent problems in using were discussed．It has importan t realistic meaning for normalizing the inviting or tendering bid practice and avoiding malignant competition． References | Related Articles | Metrics

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Circumfluence Analytic Theory of Coferdam Based on Ideal Flow HAO Yan-guang，XIAO Sheng-xie，ZHOU Ju-fang，FAN Hai-jun 2007, 26(3): 133-135.  Abstract ( )   PDF (200KB) ( )   The circumfluence around columns of plane potential flow was studied based on the theory of functions of a complex variable，and the analytic solution was educed and analyzed．When L/a>3，the muttual interference disappears between cofferdams．In order to prevent cofferdam from heavy scouring，the cofferdam shelter should be placed 0.75 a away from cofferdam.For preventing sailing ship from colliding the cofferdam under the effects of coferdam circling flow。the guard fence around the cofferdam should be installed at 0.5L from upper reaches．For reducing the movement of circumfluence．the ≤5between ge and current axes is advised． References | Related Articles | Metrics

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Study on the Law of Bubble Movement in Water LIU Sheng，YANG Cheng-yu，WANG Ping-yi 2007, 26(3): 136-139.  Abstract ( )   PDF (231KB) ( )   Through the analysis of the air bubble stress under water，the differential equation of air bubble movement in water was established．The simplification was carried out through the value method，and the analytic equation of (h)，with water depth experssing speed，was put forward to describe the whole process of air babble movement including the acceleration phase．The severe acceleration phase is short which is conneted with diameter．and the final uplifted speed is also connected with dia，but has nothing to do with water depth which is contrary to the start speed of approximate constant phase． References | Related Articles | Metrics

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The Design of LM GIS and the Instauration of the Database LIN Xiao-song ，XU Xi-bin ，ZHOU Fu-chun ，TANG An-hui 2007, 26(3): 140-144.  Abstract ( )   PDF (334KB) ( )   Lancangjiang& Meigonghe River qua an international sea-route has a strategical status．The application of GIS to the management of the sea-route call increase the navigational efficiency，improve managers decision-making，and ultimately realize the management of port and watercourse to modernization．Th e design of Lancangjiang＆ Meigonghe Geographic Informarion System(LMGIS)and the instauration of the database were discussed． References | Related Articles | Metrics

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Application of GA with Reparative Gene to Multi-resources Equilibrium Optimization in Highway Engineering FAN Qiang ，PENG Hong ，HU Jing-song 2007, 26(3): 145-148.  Abstract ( )   PDF (229KB) ( )   The issue of multi-resources equilibrium optimization in highway engineering was discussed by using GA with reparative gene，and a solution to the design of chromosome was given，and then presented the excellent unit's use and illogical resuit after optimization in highway engineering by using GA with reparative gene．This method provides an useful thread of GA's application in highway engineering optimization． References | Related Articles | Metrics

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Application of Chain-cutting Disaster Mitigation from Gestation Source to Preventing Land Desertification XIA0 Sheng-xie，SUI Yan-ehun，LIU Wen-fang，ZHOU Ju-fang 2007, 26(3): 149-152.  Abstract ( )   PDF (255KB) ( )   Land desertification at present was analyzed on the basis of the disaster chain theory．The cause of formation and the hazardness of land desertification presented a chain-form,and the source factors of disaster chain-form in land sandy desertification were revealed．And the factors includes illogical cultivating，groundwater overdraft，excessive felling，over grazing and the deteriorating ecological environment．According to chain-cutting disaster mitigation from gestation source，the mode of controlling spread of land desertification from the headstream was developed．The effects of the mode mentioned above were discussed in practice． References | Related Articles | Metrics

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Study Progress of the Oynanlic Strength of Alumina under Shock-loaded CHANG Jing-zhen ，LI Ying-hua ，LIU Zhan-fang ，ZHOU Shi-liang 2007, 26(3): 153-158.  Abstract ( )   PDF (329KB) ( )   Characteristics and results about alumina dynamic behaviors were reported．Authors forcused on the research methods and the factors which afects the dynamic strength of alumina under planar shock-loaded．Numerical analysis was made under the plate impact experiments by using ANSYS/LS-DYNA．Analysis and discussions were made by comparing the numerieal simulation results with the experiment results． References | Related Articles | Metrics

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Research on Flexible Logistic System Based on Uncertainty ZHOU Le，jI Jian-hua 2007, 26(3): 159-162.  Abstract ( )   PDF (239KB) ( )   Types of logistic system's uncertainty were analyzed．The definition，characteristics an d types of flexibility in logistic system were given．too．The research Lame of flexible logistic system was set up．Two opinions about measurement of flexibility in logistic system were compared and the realization of flexibility in logistic system Was analyzed． References | Related Articles | Metrics

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Ishikawa Iteration of Coupled Fixed Points for Nonexpansive Mapping and Element of the Best Approximation LIAO Zheng-qi 2007, 26(3): 163-165.  Abstract ( )   PDF (109KB) ( )   In strictly convex Banach space，there is set F(T)of coupled fixed points of T for nonexpansive mapping，and it is a closed convex set．When the F(T)becomes the closed linear subspace of the Hilbert space，the relationship of the elements of best approximation between the limit element and initial element of Ishikawa iteration is put forward． References | Related Articles | Metrics

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Weak Efi cient Solutions and Vector Saddle Points of Set-valued Optimization Problems in Linear Spaces WANG Qi-Lin 2007, 26(3): 166-168.  Abstract ( )   PDF (118KB) ( )   In ordered linear spaces，generalized vector Fritz-John saddle point and generalized vector Kuhn-Tucker saddle pojnt of set-valued optimization problems with generalized inequality constraints were defined，and the relations between them were established.And then，applying the alternative theorems under the generalized cone-subconvexlikeness，the relations among the weak efficient solutions of set-valued optimization problems and them were dicussed. References | Related Articles | Metrics