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15 February 2007, Volume 26 Issue 1 Previous Issue    Next Issue

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Influences of Dredging Notch on the Behaviors of Continuous Rigid Frame Bridge MA Ming，ZHOU Zhi-xiang，LI Sheng-hua 2007, 26(1): 1-5.  Abstract ( )   PDF (272KB) ( )   Aimed at the problem that continuous rind frame bridge's top slab needs to be notched because of the pipeline plugging during construction，transverse prestress loss of the top slab under diferent notched depth and width is analyzed by FEM special analysis program.Besides，the influence circle of local prestress less due to the notch is discussed，and the advice that dredging notch may be the main reason for the longitudinal cracks on the box-beam slab is shown and at last the corresponding improving measure is suggested. References | Related Articles | Metrics

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Discussion on Reasonable Structure Pattern of U-shaped Abutment CHEN Jun ，ZHOU Shui-xing ，ZHANG Yu-zhu 2007, 26(1): 6-9.  Abstract ( )   PDF (236KB) ( )   The U-shaped abutment is a common structure of infrastructure．However，the cracks often appear during the pracdee． Based on the specifications and the numerical analyses of FEA，some proposals are given out about inner and outer side slope for the common U-shaped abutment．Furthermore，some measurements and design methods which could reduce the stress and deform ation，such as setting the chamfer，reinforced concrete ring beam between the fore wall and the two side walls.emplacing the pre-stressed concrete bar or reinforced concrete pull-beam between the two side walls．These measurements and methods can be reference during designing and reinforcing bridges References | Related Articles | Metrics

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Study on Efective Prestressing Forces under Anchorage of Tied-arch Bridge LIU Shan-hong 2007, 26(1): 10-13.  Abstract ( )   PDF (178KB) ( )   The efective prestressing forces of tied anchorage and total prestressing forces of each tie have specific require- merits of precise controlling．Traditional prestressing construction methods could not satisfy the requirements proposed by de- signer．Efective prestressing forces of tied an chorage at one tied-arch bridge have been tested by diferent checking methods in practice．The test results show that efective prestressing forces of tied anchorage produced by traditional construction method have a large bias comparing with designed values．The phenomena of gliding tendon，uneven tendon forces and total tendon forces on the small side are easily caused by traditional prestressing method．Th e normal work statement of tied-arch bridges are threatened bylackof tiedforces.The studyingresults can be used as guidelinesfor designingand constructingthe same type bridges. References | Related Articles | Metrics

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Influences of Transverse Bias of Arch Axis on the Arch Ring Behavior Under Static Loads LIU Shan-hong ，LI Fang ，YUAN Chang-hong 2007, 26(1): 14-18.  Abstract ( )   PDF (227KB) ( )   A deck type bridge constructed with reinforced concrete has diferent arch axes between design and actual construction． The efects of deformation and intemal forces produced by transverse bias of arch axis are analyzed by simulative computing． Several measures used to improve the statements of mmn box-ribbed arch under loading are presented ．These methods could be used as a reference to improve．repair and strengthen the similar arch bridges having initial bias arch ring in future． References | Related Articles | Metrics

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Application of the Uncertain Analytical Hierarchy Process to Performance Evaluation of Concrete Bridge SHAN De-shan，LI Qiao，xu Wei 2007, 26(1): 19-22.  Abstract ( )   PDF (264KB) ( )   Based on the uncertain analytical hierarchy process with the group judgment，collected value statistics and barycenter decision theory，a hierarchy structure of factors afecting comprehensive performance is generated and comprehensive evaluation models of existing railway concrete bridge according to the structural characteristics of a concrete bridge are built．The application of these evaluation models produces some practicable results． References | Related Articles | Metrics

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Analysis on the Finite Element Method by MATLAB LI Xu-wei，LIU Yan-ke，ZHANG Yong-shui 2007, 26(1): 23-25.  Abstract ( )   PDF (161KB) ( )   By the programming and the matrix representation merit of the large-scale simulation software MATLAB，the finite element analysis is carried on with a brand-new method．The displacement and reaction of the pitch point are obtained through compilation M function document based on an example，and the shear diagram and the bending-moment diagram of the ele- ment are drawn．The confirmation proves this method effective． References | Related Articles | Metrics

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Dynamic Design for Anti-slide Piles with Prestressed Anchor Cables DENG Lei-lei 2007, 26(1): 26-29.  Abstract ( )   PDF (183KB) ( )   The design principle and methods of the anti-slide piles with prestressed anchor cables are analyzed．The concept of dynamic design is brought forward according to the characteristics of construction of the anti-slide piles with prestressed an· chor cables，and the optimum assembled design of the anti-slide piles with prestressed anchor cables is set forth for the reason of more economy during the construction． References | Related Articles | Metrics

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The Design and Practice of Reinforcing Renmin Bridge with Combination Method ZHANG Hui-li，MENG Yun 2007, 26(1): 30-33.  Abstract ( )   PDF (211KB) ( )   A combination of two reinforcing method in reinforcing Renmin Bridge of Bishan County is introduced．Both new technology and traditional method are used on it and the bridges carrying capacity are obviously advanced．Its economy benefit is also very good．It proves that the combination of several reinforcing method in bridge reinforcing has a good practical appllcation prosperity． References | Related Articles | Metrics

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Measures and Processes of Maintenance and Reinforcement for Dawang Bridge LUO Na ，LUO Tao ，FENG Han-dong 2007, 26(1): 34-39.  Abstract ( )   PDF (377KB) ( )   Aimed at the Dawang Bridge，this paper first introduces the reasons for the disease probloms simply，then mainly discusses the maintenance and reinforcement measures for some key positions such as arch rib，spandrel hanger，straining beam of arch crown，transbeam of hanger，corbel of main arch，rigid-frame arch of bridge approch，microcurved slab and floor decking．What's more，the key construction processes of crack grouting and sealing，steel an choraging，carbon cloth bonding， steel plate bonding，epoxy resin chemical grouting and steel encapsulation by wet type and the surface of concrete mending are discussed． References | Related Articles | Metrics

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The Application and Functional Expand of Truss Frame Platform ZHANG Qiu-ling ，XIAO Guong-hong ，HUANG Ming-hai 2007, 26(1): 40-43.  Abstract ( )   PDF (203KB) ( )   The construction method of full space support，which cant satisfy the construction needs of fiaduct with tall piers， is replaced by the construction method of truss frame platform.The beam may be constructed on the truss frame platform which is well both in economy and in safety along the span one by one．Moreover，the truss frame platform can be used as the hanging basket in the cantilever construction，as the climbing formwork in the construction of bridge pier and as the bridge erecting machine in construction of the simply-suppoaed beam bridge． References | Related Articles | Metrics

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Advance Controlling the Landslide Defect at the Exit Part of Bailu Mountain Tunnel of Wuhe Road ZHONG Ning 2007, 26(1): 44-47.  Abstract ( )   PDF (253KB) ( )   Taking the defect of landslide at the exit part of Bailu Mountain Tunnel for example．the causes of landslide are ex- pounded，and the nature of landslide is also analyzed．Through the comparison of the governing plans of landslide，the theory foundation and technology plan of advancing controlling the landsliding defect at the tunnel exit of the Wuhe road are set forth，as reference to govem the mountain landslid at the exit part of the tune1． References | Related Articles | Metrics

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Discumion on the Issues of New Design Specifications for IIighway Tunnel ZHANG Xing-lai,ZHONG Yun-jian,YANG Sheng-jie,SHAO Dong 2007, 26(1): 48-51.  Abstract ( )   PDF (205KB) ( )   As forcible requirements for industry and basis for design work，design specifications ought to be precise and seri- Ons．At the~tnle time，it is a progress for design specification to develop to be perfect．Several issues of the new《Design Specifications for Highway Tunnel》(JTG D70-2004)ale put up，such as the coordination with other relevant starndrds and specifications ，highwaytunnel builddelimitationandinner contour，steelfibre spray concrete，as a referencefor discussion． References | Related Articles | Metrics

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Test Study on the High Temperature Stable Performance for Semi-flexible Pavement WU Guo-xiong ，ZHANG Yang ，WANG Ai-min ，ZHANG Da-ke ，ZHANG Yuan-hang 2007, 26(1): 52-55.  Abstract ( )   PDF (250KB) ( )   The pavement of Portland cement pouring into asphalt concrete is a new semi-flexible composition pavement strut- ture，and the new pavement possesses the characteristics of both asphalt concrete and Portland cement concrete because of the pouring of Portland cement，which impmves the performance in high temperature greatly．The Marshall test and Wheel tracking tests aIe carried on in front of and behind pouring three mother-asphalt-mixture with diferent gap rates of 20％ ．25％ and 30％ ，and the tests prove the high temperature stable perform ance of semi-flexible pavement． References | Related Articles | Metrics

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Prevention Research on Cracks of Aggregate Stabilized with Lime and Fly-ash DUAN Qing-pu ，YU Le-hua ，ZHANG Jun ，QIN Li 2007, 26(1): 56-59.  Abstract ( )   PDF (210KB) ( )   The mixture ratios mainly including the proportion of Lime and Fly-ash，aggregate and grading collocation and the cement parameter are found out through orthogonal experiment．The relationship between the ratios and construction strength as well as the cross cracks is put forward．Then the influences of the thickness of the asphalt pavement on cross cracks are an- alyzed and discussed． References | Related Articles | Metrics

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Frost Heaving Analysis of Corrugated Pipe Culvert without Foundation in Permafrost Region SHI Gui-mei ,JIA Yan-min ，DENG Qi 2007, 26(1): 60-64.  Abstract ( )   PDF (238KB) ( )   In order to analyze stress mechanics of corrugated pipe culvert on the condition of frost heaving，the mechanical property of metal corrugated pipe culvert in permafrost region is analyzed witll large-scale finite element software．And by concretely analyzing the efect of soil displacement thickness，pipe wall thickness and upper soil displacement thickness on mechanical property of pipe culvert when the two ends of culverts occurs different degrees offrost heaving，the structural style suited for corrugated pipe culvert with the diameter of 1.Om in common use is put forward．At the same time，that the metal corrugated pipe has outstanding capacity of axial supplement displacement is educed ，which can meet the demands of rather larger deformation and settlement． References | Related Articles | Metrics

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New Confines of Road Surface Technology FAN Tong-jiang，CHEN Fu-qiang，JIA Jing-peng，XU Dong-liang 2007, 26(1): 65-69.  Abstract ( )   PDF (358KB) ( )   The development of highway construction promotes the development of road surface technology．New paving road technologies such as asphalt mastic stone pavements，porous pavements，color pavements are gradually applying in China． The new pavement technology and the prospects of the road surface in the future are described．with the purpose of catching the scientists attetion on the new trent of the development． References | Related Articles | Metrics

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Simulation Model of Asphalt Pavement Mechanization Constructi0n with GPSS/H JIAO Hai-xian ，WANG Sheng-bin ，SHI Yi ，CHENG Xiang-hui 2007, 26(1): 70-73.  Abstract ( )   PDF (193KB) ( )   The highway pavement mechanization construction is simulated based on the an alysis of highway pavement mechanization with the GPSS/H．By simulating analysis of Hangjinqu'highway project，the optimal construction plan of asphalt pavement mechanization is obtained，which develops the efficiency of construction References | Related Articles | Metrics

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A New Method for Compaction Degree Continuous Measure NING Jia-lin，CAO Yuan-wen 2007, 26(1): 74-77.  Abstract ( )   PDF (216KB) ( )   On the basis of current compaction degree continuous measure technology，the feasibility of using acceleration approach to measure compaction degree continuously is deeply analyzed，and the principle of compaction degree technology as well as its technical framewotk is put forward，which wil be valuable in measuring and monitoring the compaction quality of road． References | Related Articles | Metrics

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Analysis on Long and Steep Downhill Road Safety XU Hui-fen，TANG Bo-ming，XU Jian-tao 2007, 26(1): 78-82.  Abstract ( )   PDF (316KB) ( )   long and steep downhill mountain roads are usually the hazardous locations，especially for the overload and fast going heavy-duty vehicles which are more likely to occur to the trafic accidents．So the relationship between longitudinal gradi- ent，grade length limit，vertical cLlrve an d safety is analyzed，which can be referred to improve the safety and optimize the profile design． References | Related Articles | Metrics

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Study on the Transit Development 0bjective of Main City Area in Chongqing LI Shu-qing 2007, 26(1): 83-86.  Abstract ( )   PDF (193KB) ( )   Based on the investigation an d charactem analysis of the main city area in Chongqing，by the comprehensive analo- gy and full demonstration or proof，the development objective and indexes of Chongqing are studied and determined，and an instruction to compile”Transit development plan of the main city area in Chongqing”is given as wel1． References | Related Articles | Metrics

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A Novel Urban Construction Project——Method to Calculate the Trafic Impact Analysis Threshold CAI Xiao-yu，SUN Li-jun 2007, 26(1): 87-90.  Abstract ( )   PDF (202KB) ( )   Currently the trafic impact analysis(TIA)threshold of urban construction projects always adopts a single value (f.g.peak hour trip rate equals to 1OOPCU/h)，never considering the diferent trafic conditions．Aiming at this problem， based on the system of urban road equivalent capacity and density ratio evaluation，a novel method to calculate the TIA threshold is presented．According to the density ratio evaluation criterion．the urban road trafic conditions are divided into some grades and the TIA trip threshold for each grade is advanced． References | Related Articles | Metrics

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Analysis of Leading Function of Rail Transit for Optimizing the City Structure of Xi'an HAN Chao，YUAN Shu-ping 2007, 26(1): 91-95.  Abstract ( )   PDF (300KB) ( )   On the basis of analyzing the current situations and problems of space forms of metropolises in China，as well as the curent structure and problems of transportation in Xi'an，this paper points out the experiences of optimizing the structure in some urbans，such as in Tokyo，and discusses the leading function of rail transit for optimizing the city structure of Xi'am． References | Related Articles | Metrics

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Urban Transportation System Planning Theory Frame Based on Sustained Development ZOU Sheng-yong，ZHANG Feng 2007, 26(1): 96-100.  Abstract ( )   PDF (247KB) ( )   The history of urban transportation planning development is viewed and the traditional shortcomings of planning are analyzed．On the basis of sustained-development theory，the principles of sustained development planning 0f urban transportation system are proposed ，and a theory system of urban transportation planning which should satisfy demand，optimize re- sources utilization and improve environment quality is put forward．The arrangement of sustained developing planning had been mentioned also References | Related Articles | Metrics

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The Characteristic of Single Grain Aggregate Not Line Form and the Concrete Strength ZHANG Zu-tang 2007, 26(1): 101-104.  Abstract ( )   PDF (212KB) ( )   The characteristic of single stain aggregate not llne form is studied on a new angle by certain measurement method And the concrete engineering applying which cant satisfy the request of the possible use of the gather aggergate is explored Then the method of controlling the productive quality ofthe aggregate is put forward． References | Related Articles | Metrics

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Study on Countermeasures of Sewage Disposal at Highway Construction Scene WU Xiao-guang，ZHANG Jian-juan，HA0 Yi 2007, 26(1): 105-107.  Abstract ( )   PDF (134KB) ( )   By analying the necessity of establishment of sewage purification based on the example of the building of 2#tunnel in Xi-Han highway．a construction project about multilevel deposition pool to purify sewage is brought forth and the design method is introduced as well as the sewage purification equipment． References | Related Articles | Metrics

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Application of the Wevelet Analysis to the Denoising with GPR Data Processing XU Jian-wen ，WANG Jian ，WU Jiang-ning ，GAO Yan-xi 2007, 26(1): 108-111.  Abstract ( )   PDF (229KB) ( )   The Ground Penetrating Radar(GPR)is widely used in road construction and quality inspection，but the traditional method of data processing can not satisfy the practical denoising applications now．Applying the wavelet and wavelet packets analyses to the data processing Can lead to good results． References | Related Articles | Metrics

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Approaching Debris Flow in Area of the Three Gorges Reservoir thr ough Catastrophic Debris Flow Occurring in Philippines on Feb．17th ， 2006 CHEN Hong-kai，TANG Hong-mei，SHU Xiao-hong，WANG Yong-zhi，LI Ke，SHI Jin-XU 2007, 26(1): 112-115.  Abstract ( )   PDF (275KB) ( )   Catastrophic debris flow occurring in Philippines on February 17th，2006 is the inevitable result from coupling and changing of factors such as materials sourses ，landform and geomorphology，precipitations and earthquake．It is the mocha- nism forthe debris flow to develop that landslide breaks up under action of strong precipitation and weak earthquake，and the reason for the calamity is due to many buildings and residents living in the area of debris flow while there is not any system to foresee and forecast debris flow．In this paper．authors compare basic conditions to trigger debris flow in the area of the Three Gorges reservoir with that in region of Philippines happened on February 17 ，2006，including the materials sources，outline of valley．meteorological conditions and earthquake．Then some conclusions are obtained：in area of the Three Gorges reser． voir，classifications and reserves of materials have more quantity；strength under action of water are easier decreased；quantity of debris flow valleys is more；bad meteorological conditions are more obvious；man-made actions are more widely and the trend to cause calamity is more inevitable．In other words，there are enough conditions to triger catastrophic debris flow in area of the Three Gorges reservoir．Further，some primitative ideals to study and control the debris flow in area of the Three Go rgeservoir are approached ． References | Related Articles | Metrics

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The 3-D Numerical Analysis of the Workshop Flow-way of Yangtoupu Hydroelectric Station in Pengshui ZHAO Ming-jie，WANG Jin-hai 2007, 26(1): 116-121.  Abstract ( )   PDF (325KB) ( )   The Yangtoupu hydroelectric station is a key work position of the step developments of Yujiang River in Penshui County of Chongqing City．The method of nonlinear finite element of elastic-plastic is adopted for carrying out the three dimension numerical modeling work on the workshop flow-way of Yangtoupu hydroelectric station．Th e five force cases are coneerned during the numerical analyses processes，which contains the normal running，the constructing and running，the running and checking and repairing and the constructing and sluicing．Based on the results of numerical analyses，some improring suggestions to the design plan of workshop flow-way of Yangtoupu hydroelectric station are proposed． References | Related Articles | Metrics

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Biding System and Risk Precaution Research Based on Agent of Construction System DENG Zhong-mei 2007, 26(1): 122-124.  Abstract ( )   PDF (148KB) ( )   Through analyzing the risks for government during tendering phrase．a suggestion that we should design tendering system and contract terra in order to prevent risk is proposed．So the agent of construction system could develop better． References | Related Articles | Metrics

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Application of Linear Programming on Bidding Decision of Compound Base Price ZHU Xiao-rong ，LIU Yan 2007, 26(1): 125-129.  Abstract ( )   PDF (219KB) ( )   Through the analysis of the characteristics of compound base price and through the introduction of bidding decision theory，the linear programming is applying to bidding decision by way of establishing model and searching for mathematical formula．Eventually it sives an example to verify the efective applieation． References | Related Articles | Metrics

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The Discussion of Business Accounting of Project Cost in Construction Corporation ZHA0 Chao 2007, 26(1): 130-132.  Abstract ( )   PDF (188KB) ( )   The problem of cost management of project is relative to the existence and development of a corporation．So tightly handling the business accounting of projeet cost has became the main problem of cost management．The current situation and the significance of business accounting of corporation projeet cost are described，then the object and the content of the business accounting are defined and the approach of business accounting of cost is put foward． References | Related Articles | Metrics

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Numerical Simulation of Contact Status on Connection Structure with Pre-tightening Porous Silicone Rubber Cushion WANG Jiang ，ZHO Shi-liiang 2007, 26(1): 133-137.  Abstract ( )   PDF (258KB) ( )   The 2D mechanicel modal of the connection structure with pre-tightening silicone rubber is presented．Whether this structure woes safely lies on the dynamic response ofthe system under the action of external load，mainly on the contact status of the two sur[aces and the main controlling factors of the dynamic response of the system under the action of external load．which are analyzed in detail．The numerical simulation of dynamic response of this system as some controlling factors changed is carried out by finite element software ABAQUS．Some useful conclusions are drawn．which can be used for engi- neering design． References | Related Articles | Metrics

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The Environment Analysis and Countermeasure Study of the Development in 3 PL of China YANG Ming-yi，XU Mao-zeng 2007, 26(1): 138-141.  Abstract ( )   PDF (222KB) ( )   The Third-Part Logistics is a kind of creative management mode，having became an essential mode of each national enterprise logistics in 21 centuries．On this situation，the development situation of the 3PL in our country is analysed and the countermeasures are given out． References | Related Articles | Metrics

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The Evaluation Method of Enterprise Competitiveness Based on the Multi-layer Fuzzy Evaluation YE Lei，DU Zi-xue，XIAO Sheng-xie 2007, 26(1): 142-146.  Abstract ( )   PDF (174KB) ( )   Enterprises plays a very important role in the economy of our country，so evaluating its total competitiveness seems much pressing．Using integrative judging methods in fuzzy mathematics to make the fuzzy information quantified，making a quantitative evaluation and applying the principle of"Max membership"．the functions of enterprise's competitiveness can be estimated．Finally，the model is feasible in an applying case． References | Related Articles | Metrics

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The Application of the RFID Technology to the Supply Chain ZHAO Shi-jun ，ZHANG Jin，LIU Kai-yuan 2007, 26(1): 147-151.  Abstract ( )   PDF (253KB) ( )   The development of RFID and its key technology are introduced，and the excellency，the work principle as well as the application of electron label are expatiated on．Based on the share ofinformation and profit．the influences on the supply chain of applying the electron label are discussed．Analyzing and forecasting the application of RFID industry in logistics supply chain，some suggestions of developing the application of RFID logistics are put forward，combining the fact in China． References | Related Articles | Metrics

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The Area Measure Considering the Earth’s Curvature LI Yu-bao，CAO Zhi-xiang 2007, 26(1): 152-154.  Abstract ( )   PDF (139KB) ( )   The area errors stemming from the Gauss projection distortion ale discussed，and the magnitude and natures of the distortion title canvassed．Then the methods of eliminating and reducing area distortion are presented and the clear and definite conclusions are drawn． References | Related Articles | Metrics

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Applieation of BP Neural Network to City Consume Prediction HE Qing-bi 2007, 26(1): 155-157.  Abstract ( )   PDF (205KB) ( )   Through applying an improved BP(back propagation)algorithm to city consume，a BP model is built．At the same time，a assessment system of city consume based on ANN is designed，and the results of application show that the algorithm is of high speed for convergence and of high accuracy for prediction and is an efective predictive method． References | Related Articles | Metrics

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Discussion on the Positive Direction of Shear Stress in Material Mechanics WANG Jia-lin 2007, 26(1): 158-160.  Abstract ( )   PDF (158KB) ( )   The inconsistency of shear stress positive directions in planar and spatial stress states in current Material Mechanics is indicated．The shear stress positive directions of planar stress state in current Material Mechanics is suggested to be reversed． Based on the new direction，the formulas of stresses on an incfine and the corresponding Mohr circle are presented． To introduce stress matrix to calculate its main stresses．main directionS and the stresses in any coordinates are advised．The teaching practice proves its feasibility． References | Related Articles | Metrics

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The Optimality Conditions of Benson Proper Efficient Solution for Diferetiable Vector Extremum Problems WANG Qi-lin 2007, 26(1): 161-163.  Abstract ( )   PDF (108KB) ( )   Benson proper eficient solution for vector extremum problems is the most important aspect of optimization problems，and it has drawn lots of attention．In ordered topological vector spaces，by applying characterizations of G-diferentiable function and Theorem 4．1 of Ref[1]，several optimality necessary conditions and suficient conditions of Benson proper eficient soluton for diferentiable vector extremum problems with set constraint are obtained． References | Related Articles | Metrics

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Common Couple Fixed Point Theorem for Multivariate Mappings LIAO Zheng-qi ，HE Qing-bi 2007, 26(1): 164-166.  Abstract ( )   PDF (114KB) ( )   A group of binary mappings is studied and the existence，iterative sequence and estimation form ula of rate of con— vergence for common couple fixed point of multivariate mappings are obtained in complete metric space． References | Related Articles | Metrics