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15 December 2006, Volume 25 Issue 6 Previous Issue    Next Issue

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Discusses of design method of box girder with corrugated steel webs HU Xu-hui，GU An-bang，XU Jun-lan 2006, 25(6): 1-3.  Abstract ( )   PDF (286KB) ( )   The box girdey,with corrugated steel webs is a new type of composite steel—concrete strueture．It’s introduce the section design、Corrugated mgated steel webs design、shear connecter design and defommtion of the beam calculation，and will provide a method for the later design． References | Related Articles | Metrics

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Overcoming post-downwarping of long span PC continuous rigid frame girder by design measures LIU Shan-hong 2006, 25(6): 4-7.  Abstract ( )   PDF (345KB) ( )   Comparing with the design parameters of several long span prestressed concrete continuous rigid frame girders，which have excessive downwarping caused by girder cracking，the main reasons of causing Order downwarping are presented．In order to improve the permanent shear carrying capacity of box girder，design parameters of improving structural measures are proposed Specific measures．which can overcome the continual post—downwarpings of box girders．are presented．They can also guarantee girders in health states efectively． References | Related Articles | Metrics

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Suspending placement and the methods of wind-resistance of Hulukou Jinshajiang bridge ZHU Liang-qing，XU Yong, ZHOU Zhi-xiang 2006, 25(6): 8-11.  Abstract ( )   PDF (300KB) ( )   In the paper，the construction technology of suspending placement and closure approaching of Itulukou Jiushajimlg Bridge is intm— duced．And also the methods of wind—resistance are introduced Mille constructing the bridge which is located in strong mons00n area．The pa— per earl supply references to construction of long span arch bridges in similar condition． References | Related Articles | Metrics

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The construction control of tensioning of anchor span strand for erecting suspensio bridges SUN Yu-ping，SHEN Rui-li，TANG Mao-lin，WU Tan，LIU Bao-wen 2006, 25(6): 12-16.  Abstract ( )   PDF (370KB) ( )   It is an important part for making sure the harmony ofthe stress state and configuration of structure to that of design．Diferent construction applies diferent method to adjust the eccentricity．As a new method of suspension dge construction，it is diferent from preeccentriciting main saddle，incremental launching main saddle in construction．Through analyzing the construction of lancangjiang bridge，the construction process，the contents and paramctem of costruction control arc introduced，and it is presented that according to the condition of construction control，the circulation condition of tensioning of anchor span strands should be make up so that make sure every component of structure is safe in construction and reach the design location in bridge completion stage．In the end，the tensioning process of anchor span strands divided into two groups will be simulated，and the conclusion will be drew that，with the increasing of the bundle of anchor span strands ，the frequency ofthe tensioning of anchor span strands will be rapidly raised． References | Related Articles | Metrics

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Applica tion of genetic algorithm to the design of bridge strengthen of external prestressing LIU Xiao-yu，XU Huai-lin，ZHANG Tian-yu 2006, 25(6): 17-18.  Abstract ( )   PDF (184KB) ( )   The arrangement of external prestressing steels is influened by various factors in the design ofbfidge strengthen，a kind of genetica1 gofithms based on real number encoding is used and target function is set to the section Rrea ofthe horizontal steels for solving the problem of suitable arrangement of external prestressing steels in this paper． References | Related Articles | Metrics

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Damage evaluate and the method of diagnose study of great highway bridge structure by over loading LI Jian，SUN Jian-yuan 2006, 25(6): 19-21.  Abstract ( )   PDF (312KB) ( )   The dainage of bridge structure is brought by vehicle's overloading，based oil crack theory.Damage evaluate and the method of diagnose of great highway bridge structure by over loading is brought．the feasibility project is brought'about the reinforcement and servicing after bridge structure was damaged. References | Related Articles | Metrics

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Conunent on protection device of bridge piers Wu Zu-lie，XU Dong-feng 2006, 25(6): 22-26.  Abstract ( )   PDF (451KB) ( )   The paper expands the damage of the ship-bridge collision and the necessity of protected piers． Then，it classifies and comments all kinds of protection devices of bridge piers，and summers the merits and shortcomings ofthe current protection devices inthe domestic and inter． nationa1．Finally。two design ways on the protection dcvice are given． References | Related Articles | Metrics

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The destruction analysis of bridge stru ctures due to the mainstream variance of the flood and the corresponding preventive measures CAO Fang，XIAO Sheng-xi 2006, 25(6): 27-30.  Abstract ( )   PDF (302KB) ( )   Aimed at the condition flmt mainstream can not smoothly get through the bridge opening in the engineering，which induced bridge destruction，al1alyze file reason of causing the malmtream variance ofthe flood in front ofthe bridges． Taking bearing and conical slope as examples explains tile destruction mechanism of variant mainstream，propose the corresponding countermeasure of disaster prevention and mitigation． References | Related Articles | Metrics

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Experiment study on local score around a new special bridge pier LIU Bao-jun，CHEN Min-dong，YANG Zhong-chao，YANG Sheng-fa 2006, 25(6): 31-34.  Abstract ( )   PDF (243KB) ( )   The situations of local erosion in riverbed around bridge piers have many project．Due to its complexit，studies on it have been condueted in a semi-empirical and semi—theoretical ways．Though the experimentation．we observe bridge’s local score and the movement of the water．By experimentation，we find that movement of the water is similitude between new type bridge pire and single bridge prie．When the distance of two bridges is closer，the upriver bridge will protect the downriver bridge． References | Related Articles | Metrics

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Numerical simulation research on dynamic excavation process of exit construction of Ranjiaba tunnel JIANG Ming-gui，SUN Liang，XU Lin-sheng 2006, 25(6): 35-37.  Abstract ( )   PDF (204KB) ( )   According to the step excavation method characteristics of left line exit in Ranjiaba tunnel，the dynamic emulation simulataflon of NATM excavation construction process has been conducted successfully with FEM． References | Related Articles | Metrics

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Measurement of anti-slide performance of tunnel road surface and its efect on driving safety YANG Zhen，GUO Zhong-yin 2006, 25(6): 38-42.  Abstract ( )   PDF (335KB) ( )   The anti-slide pefomumce of tunnel road surface is measured at diferent positions of eight tunnels of a montanic expressway by self-developed three-axcs acceleration apparatus．The general alteration regulation of anti-slide performance of tunnel road surface with diferent structure and slope is analyzed，and its effect on driving safety is probed based on the vehicle dynanlic simulation technique． Finally，the rea． sonable suggestion for tunnel road surface structure design are proposed based on the relative research References | Related Articles | Metrics

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Discussion on the three curved square laws using in the alignment’s design of the highway WANG Xiang-feng，SUN Jia-si 2006, 25(6): 43-45.  Abstract ( )   PDF (157KB) ( )   Use three etrrved square laws on one of the basic alignment's cnrvity line to fit a new alignment that is not only succession in curvity，but also even succession in rate changing of curvity，thus make the alignment pleasantly and drive a vekicle orbit in succession．In order to adapt to the high-speed security of driving． References | Related Articles | Metrics

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Discussion of city intersection landscape design YU En-ya，SUN Ja-si 2006, 25(6): 46-50.  Abstract ( )   PDF (379KB) ( )   First，this paper expounds the importance of interchange landscape design in city，then it analyses the basic esthetic character of city interchange，the content of city landscape design,the exploration of city landscape design in order to creat a harmonious，neat cnvironroent which meets the fucfion of interchange． References | Related Articles | Metrics

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Consequence analysis of smoothness to cement concrete pavement’s fatigue failure ZHANG Yang，WU Guo-xiong，ZHANG Yang，CHEN Fu-qiang，ZHANG Yuan-hang 2006, 25(6): 51-53.  Abstract ( )   PDF (192KB) ( )   Through field test，this paper analyzes the relafiomhip among the dynamic strain in the bottom of the slab、the smoothness and the velocity，which are under the action of coupling among slabs and vehicle．Based on this，the connection between the dynamic strain in the hottom of the slab and the pavememt’s fatigue life has been analyzed．Through above analysis，the paper presents that the smoothness is one of the most important factors of cement concrete pavement’s fatigue failure，And it puts forward some references to the design theories and methods of cement concrete pavement． References | Related Articles | Metrics

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Looks into in the way of the performance on the gravel flexible primary level asphalt pavement route FENG Li-qun，LIANG Nai- xi，CAO Yuan-wen，LI Yu 2006, 25(6): 54-58.  Abstract ( )   PDF (335KB) ( )   Investigation in the way of the performance of Xinjiang artery road gavel flexible primary level asphalt pavement route by means of adjust，Analyse the gravel flexible primary level asphalt pavement route in the way of performance together with volume of traffic.Composition on roadbed pavement、The roadbed is writeed constructing the high correlation relationship；Proposethe natural grit stuff routes of distinct cate gorys in the way of the performance intensity parameter span． References | Related Articles | Metrics

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Study on pavement performance of HMA mix’s aggregate gradations near restricted zone CONG Zhuo-hong，ZHENG Nan-xiang，NIU Si- sheng 2006, 25(6): 59-62.  Abstract ( )   PDF (332KB) ( )   According to pavement performance tests this paper analyzesd six HMA mixes which gradations were BRZ，CRZ，TRZ，HRZ，ARZ and AC一16 by Chinese Specification respectively．The restricted zone may not be necessary to folow every performance when all other relevant requirements of Superpave design are requested ．HMA mix’s pavement performance is optimal when the gradation is through the restricted zone． References | Related Articles | Metrics

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Research on performance of AC fibers-enforced asphalt mix ZHONG Yu-xia，YANG Xi-wu，XU ji-li 2006, 25(6): 63-67.  Abstract ( )   PDF (351KB) ( )   The wheel tracking is a difficulty problem urgently to be resolved about asphalt pavement，it degrade tlle pavement service leve1．In this paper taking Dolanit AS and Methyl Cellulose for example，by the wheel tracking test，compare the asphalt mix with the fibers—reinforced asphalt mix in stabilization degree and track transfiguration degree and other factors，then talk about other pavement performances simply． IIling to utilize adsorption stabilization mechamsm of fiber for bitumen，probing into AC pavement both enduring and excellent stabilization which can be used in}ligh temperature wet condition．As a result．Dolanit AS fiber-enforced asphalt pavement is a good choice．Further to discuss how to chose high temperature characterization figure(stabilization degree and track wamfigurafion degree)． References | Related Articles | Metrics

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Construction and application of two ashes and crush stone in the airport project LU Jian，CAO Yuan wen，ZHAO Hui 2006, 25(6): 68-69.  Abstract ( )   PDF (179KB) ( )   This paper introduces some details of the construction of two ashes and crush stone basement in the × × civil aviation airport’s pavement engineering，such as the demands of materials，mixing and spreading，rolling and curing，qIlaljty detection and the problems should be noticed in the construction． References | Related Articles | Metrics

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The design and application of shoulder rumble strips in USA MENG Hua，FAN De-rnin，TANG Bo-ming 2006, 25(6): 70-74.  Abstract ( )   PDF (478KB) ( )   Shoulder rumble strips is a new type safety-precautions to alert inatentive or fatigued drivers．Noise and vibration produced by shoulder rumble strips are effective alarms for those who are leaving the roadway．This paper introduces detailedly some information on state-of-the-practice for the design and application of shoulder rumble strips in USA． References | Related Articles | Metrics

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The mesh theory in the highway DTM system development YANG Jin-hua，RUAN Lin-zhong 2006, 25(6): 75-77.  Abstract ( )   PDF (213KB) ( )   This paper mainly introduces the kernel arithmetic in the Highway DIM system development，that is the technique about mesh division． References | Related Articles | Metrics

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Study on mountain sand road technique for concrete economic ZHANG Zu-tang 2006, 25(6): 78-80.  Abstract ( )   PDF (246KB) ( )   the mountain sand act for the sand application in the road lesson for concrete is first can't get arounding．Research that this text with the yi-lu road is a basis，analysis expound mountain sand road technique economy for concrete not only have the good work the characteristic， mechanical behavior，fuck the shrinkage properties，but also having marked value． References | Related Articles | Metrics

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Study on the dry shrinking property of stabilized red sand soil soft aggregate pavement base HUANG Wei-tong，HE Zhao-yi，LIU Qing-qian 2006, 25(6): 81-86.  Abstract ( )   PDF (341KB) ( )   In this paper，the dry shrinking property of cement stabilized red sand soil；lime-fly ash stabilized red sand soil；solidify agent stabilized red sand soil and lime-fly ash stabilized red sand soil adding soft aggregate are researched ,finally,lime-fly stabililized red sand soil adding soft aggregate and cement stabilized red sand soil adding soft aggregate are preference than stabilized red sand soil；lime-fly ash stabilized red sand soil and solidify agent stabilized red sand soil in dry shrinking property．which are used as pavement base of county road in 1ack aggregate district is reasonable，it has a sood application value． References | Related Articles | Metrics

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Using the stabilizing piles with prestressed anchor ropes for remedy Of deep-strata landslide of highway roadbed LIN xin 2006, 25(6): 87-93.  Abstract ( )   PDF (463KB) ( )   On the base of several cases，the basic principle、the design method and the effeets of remedy for deep-strata landslide disaster are introduced in this paper by stabilizing piles with prestressed anchor ropes．one end of the anchor rope is embedded in stable rock mass．while the other is connected to the hcad of thc stabilizing pile，and then the anchor rope is prestressed．The stabilizing pile，one end of which is fixed and the ohter is free，is changed from one state of free head into another statee of elastica1ly fixed head，so that the landslide disaster is remedied．In recent years，the author has used this method for remding more than thirty landslides，and all of those have received very well signifieant effects．This method can generally saved a cost of 20％ 一40％ for the deep-strata landslide of highway． References | Related Articles | Metrics

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The application research of cement powder spray pile technique deal with softground in lakeside region XU Jian-ping，ZHANG Zhen-jiu，YANG Jian 2006, 25(6): 94-95.  Abstract ( )   PDF (182KB) ( )   This paper elaborates the design of Cement Power Spray pile technique deal with softground in lakeside region and construction control technology．Some conclusions are gotten about the cement power spray pile deal with sofeground in lakeside region. References | Related Articles | Metrics

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Experimental study on the grid reinforced embankment YANG Ji-chang 2006, 25(6): 96-99.  Abstract ( )   PDF (240KB) ( )   Using geogrid in soil body improve its characters，by doing a series of experimental study on mud stone，reach the result of enhancing the durability of the slope and stabilizing the soil body． References | Related Articles | Metrics

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The charge pricing questions of the highway and railway in free competition LU Ning，LI Li，YANG Rui,LIAO Xiang-hui 2006, 25(6): 100-103.  Abstract ( )   PDF (304KB) ( )   This text uses the game theory to analyses the charge question of highway and railway transportation，Regard road operator as the subject of studying,mainly research the situation of the equilibrium in free competition．Under the precondition of that both sides want to the most profit，get each factor that influences the charges，let the charge get best equilibrium.The feedback function of each company is given，and we get the best equilibrium charge through the functions．It provides the basis of the charge for highway and railway operator to a certain extent． References | Related Articles | Metrics

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Expressway trafic-flow wave analysis OH the influence of traffic incidents and intervention process WANG Jian-jun 2006, 25(6): 104-108.  Abstract ( )   PDF (291KB) ( )   This paper analyzed the interactive influence of trafic incidents and intervention measures on expressway traffic-flow on the base of hydrodynamk-trafic—flow wave theory,established traffice-flow wave speed model，traffic-flow wave position models and corresponding time models in the interactive influence of intervention shock-wave and concentration-wave，startup-wave and dissipation-wave result from trafic incidents and relieving diffluent intervention measures time model on the base of general model of speedin relation to traffic density．Thes models or critical parameters provided the theoretical basis for determining effectively schemes for solving traffic incidents and eliminating quickly traffic congestion or clog． References | Related Articles | Metrics

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Research on the mixed stochastic user equilibrium traffic assignment model under influence of ATLS KUANG Ai-wu,WANG Zheng-wu 2006, 25(6): 109-111.  Abstract ( )   PDF (244KB) ( )   Under influence of ATIS to travelers' route choice behavior，based on the network mixed stochastic user equilibrium approach， a mixed network equilibrium model is established in this paper，the equivalence of the equivalent mathematic plamdng model is also proved． A correspondent algorithm is designed for the model and computation is carried out by the algorithm． References | Related Articles | Metrics

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Phrase space reconstruction based on traffic flow SHI Ling-na 2006, 25(6): 112-115.  Abstract ( )   PDF (259KB) ( )   As an open and complicated system，traffic system is highly nonlinear and indetexminated ．This article simulates and analyzes the traffic flow based on the theory of phase space reconstruction．By choose appropriate delayed time and embed dimension，we get a relevant associated dimension，just as the attract dimension．This article gets a fractional dimension which exceeds 2．That explain the system is a chaos system．and if we want to construct a relevant kinefic model，we must need 3 absolute variables at least．This method has a significant meaning for forecasting traffic flow． References | Related Articles | Metrics

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Study on the four-step methods of vehicle-logo location of moving vehicles ZH0U Yu 2006, 25(6): 116-118.  Abstract ( )   PDF (176KB) ( )   Vehicle-logo location moving vehicles is one key technology in vehicle recognition． The paper set the conception of the four-step method dvehicle-logo location of moving vehicles，introduced the method and key technology in vehicle-logolocation of moving vehicles，made experiment to prove the seientificity and practicality of the method ． References | Related Articles | Metrics

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Study and implementation of ITS remote measure and control system based on WEB BI Bo 2006, 25(6): 119-122.  Abstract ( )   PDF (287KB) ( )   This paper presents a web-based remote measure and control system that is designed to measure and control the remote real-time data over the Interact with a web browser．It studies the technology of ADO／ASP of web database server．The system was designed to collect realtime data from remote nework，issue data dynamically，query history data and Set up parameter remotely References | Related Articles | Metrics

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Theoretical and experimental study on sensitive concrete's thermoelectric effect ZHANC Kai-hong，ZHANG Ben-niu 2006, 25(6): 123-125.  Abstract ( )   PDF (215KB) ( )   The export of electric signal of the sensitive concrete can retlect the conditions of temperature，load and damage etc．In this paper， the relation of sensitive concrete's temperature and electric voltage change is studied theoretleally and experimentally. References | Related Articles | Metrics

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Study and analysis on the braking force of towed trailer used electric brake ZHANG Jia-long，ZHOU Kong-kang，CHEN Liao 2006, 25(6): 126-129.  Abstract ( )   PDF (302KB) ( )   Based on the requirement to the Braking fore of Towed Trailer in the Braking rules,a mechanics model of the Towed Trailer used Electric Brake is established in this paper，Realize the regulation of Braking force by changing the current of Electromagnet．Get the proper scope of the current．A comparative analysis is made between the test results and the conclusion．The results show the correspondence of the conclusion and the mechanical model of the braking force with the practice．which pmvidcs valuable reference for the further study on the distribution of braking force and the braking stability． References | Related Articles | Metrics

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Blending application of rough sets and neural network in EFI engine fault diagnosis FU Xiao-lin,WANG Xing-jia，CAI Chen-guang 2006, 25(6): 130-134.  Abstract ( )   PDF (246KB) ( )   The information of refleeting the EFI engine running state is complicated，the relationship between fault and numerous stating information is uncertain and fuzzy．The key of EFI engine fault diagnosis process is how to acquiring and using valuable information from those compucliated multi-source information．Inthis paper,rough sets theory was applied to reduction of incomplete information to find necessary conditions for diagnosis．and according to the results of reduction the fault diagnosis system of based on neural networks was founded．The comparison results of network training indicated that the structure of neural network was simplified by reduction process of based on rough sets theory and efficiency of network training was enhanced；the feasibility of application of rough sets integrated with neural networks to fault diagnosis of EFI engine was verified by the practical example． References | Related Articles | Metrics

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Analysis and prediction on the long-term trend of runoff in the Jialing River WANG Miao-lin，FU Hua 2006, 25(6): 135-138.  Abstract ( )   PDF (275KB) ( )   Markov model was used to analysis and forecast qualitatively the annum maximum peak discharge from 1939 to 2005 at Beibei station of the Jialing River．The method can be spread and applied in the long-term hydrological predictions References | Related Articles | Metrics

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Mathematical model of excavation scheme on the second stage of project of container dock in the harbor of Luzhou ZHAO Wei-yang，WANG Ping-yi，GAO Gui-jing 2006, 25(6): 139-142.  Abstract ( )   PDF (388KB) ( )   Based oa the analysis of basic characteristics of the Luzhou reach in the Changjiang River，Combine the implementing scheme of the second stage of the project of container dock put forward in model test of the bed definitely，adopted the two-dimentional rivers mathematics model of level and carried on the water—line and flows in field to analyse that is calculated，study the change open up to navigation the condition after the second stage of the project is built，result indicate build quay section this open up to navigation terms can satisfied with the request of opening up to basically． References | Related Articles | Metrics

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Research on the solution of seepage free surface to the port shores in Three Gorges reservoir CHEN Ye-ying，TANG Hong-mei，CHEN Hong-kai 2006, 25(6): 143-146.  Abstract ( )   PDF (301KB) ( )   Comparing the seepage field in natural shore with part shore，the law of groundwater seepage is not the same．Solving the port．shore seepage free surface by traditional method is very difficult．So the authors brought forward a calculation method for seepage free surface based by constant differential equationin planar seepagefield．By Usingthe equation，the authors obtainedthe distribution of port shore seepage free surface and its change to time by analytica1 calculation．The method is very simple and avoid complicated calculation prceess．The result is credible and can effectively guide the port construction and geologic disaster preventions in Three Gorges reservoir References | Related Articles | Metrics

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Effects of the Three Gorges project on water-level-fluctuating zone on land resonrce of the reservoir and its sustainability YANG Qing-wei，LIU Rui，QIN Cheng 2006, 25(6): 147-149.  Abstract ( )   PDF (304KB) ( )   after the completion of the Three Gorges project，a 30-meter high permanent water-1evei—fluctuating zone(WLFZ)wil appear with the largest area of 1．1×104km2．Sustainable use of land resource of the WLFZ call both allay the conflict between human and land．but also improve ecological environment in the Three Gorges Reservoir(TGR)．Based on researches accomplished，four models for land consolidation and sustainability of the TGR including engineering shield，the seasonal dUage，forestry and regeneration References | Related Articles | Metrics

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Constructing economical social is the base to solve water pollution of the Three Gorges reservoir area YU Xing-dong 2006, 25(6): 150-154.  Abstract ( )   PDF (385KB) ( )   The paper describe the serious of water pollution of Throe Gorges reservoir area．indicating the importance of gross control and the pressing of synthetic prevention．It has realism effect for people to changed the habits of using wetter self-eomeious，enhancing the conscious— ness of water-savlng and pollution-reduction，protecting nature resource optimizing entironment,contructing economical social，developing cycle economy，retaining country economy continual development．Moreover，more suggestion and measure was brought forward to improve the water quality of Three Gorges reservoir area in this paper． References | Related Articles | Metrics

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A parallel processing method for long a dimension DFT based on multiprocess unit XU Qiang，GAO De-hui 2006, 25(6): 155-157.  Abstract ( )   PDF (171KB) ( )   A lot of process of DFF is used in in1age process and the image pixels ale higher and higher．so we are used to meet with the long Discrete Fourier Transform in Image process．This paper which based on the character of the Muhiprocess Unit analyses a parallel processing method of DFT and the structure of Muhiprocess and then provides a method of Discrete Fourier Transform which make the system implement effectively． References | Related Articles | Metrics

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Optimality conditions of strict efficient solutions for the vector optimization problems WANG Qi-lin 2006, 25(6): 158-161.  Abstract ( )   PDF (224KB) ( )   In locally convex Hausdorff topological vector spaces，strict efficient solutions for the vector optimization problems with set-valued maps are discussed．Firstly，under the generalized cone-subeonvexlike set-valued maps ，property of scalarization of strict efficient solutions for vector opfimization problem is obtained．Finally，Lagrange type optimality conditions of strict eficient solutions for the vector optimization problem with generalized inequality constraints the problem are obtained． References | Related Articles | Metrics

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Estimating the parameters of Markov model using entropic function as a criterion HU Bi-jin 2006, 25(6): 162-164.  Abstract ( )   PDF (176KB) ( )   Markov model plays an important role in the recognition field of standard text and hand-writing．In order to consider how to reestimate model-parameters from observation data，the criterion function introduced by the entropic propcrtles of the model replaces Baum auxiliary function，and formulas of reestimating model-parameters is obtained using the properties of the criterion function introduced by the entropic properties ofthemode1． References | Related Articles | Metrics