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15 December 2005, Volume 24 Issue 6 Previous Issue    Next Issue

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Study on construction control project for Chongqing Shibanpo bridge HUANG Hai-dong, XIANG Zhong-fu, LIU Zhi-hui, SHUN Jun-ling, QANG Lu 2005, 24(6): 1-4,13.  Abstract ( )   PDF (236KB) ( )   The Shibanpo bridge lies in the main district of Chongqing, the structure is the co-operation system of rigid frame bridge and continuous beam bridge, the main span is the longest one in the world. According to particularity of the bridge in design and construction, give emphasis to study on computation models of creep shrinkage, temperature deformation and three-dimension linetype control, based on the common construction control method. Related Articles | Metrics

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The transverse distribution of load and practical calculation of box-slab arch with long-span XIANG Zhong-fu, WANG Jia-lin, ZHANG Xue-song, SUN Shu-hong 2005, 24(6): 5-9,17.  Abstract ( )   PDF (281KB) ( )   A practical method of was used to calculate lateral load distribution in the box-slab arch bridge based on the model test and numerical analysis for the transverse distribution of load of slab arch bridge. Related Articles | Metrics

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Research on mechanics behavior of irregular box-girder bridges CHEN Han-xin 2005, 24(6): 10-13.  Abstract ( )   PDF (193KB) ( )   United with the project of Chongqing Jiangnan intersection, the paper introduces a method of spatial theoretic analysis of irregular box-girder bridges, and presents the paralleled numerical values between the theoretical and relevant static-load experimental outcomes under each working condition. These values are given in order to examine the feasibility and reliability for the calculanting method of irregular box girder by the ANSYS simulator program in relevant bridges, and to draw some conclusions as references. Related Articles | Metrics

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Inquiring into method of raising adjective evaluation on resistance of bridge GAO Fei, SHI Shang-wei, YANG Hua-gang 2005, 24(6): 14-17.  Abstract ( )   PDF (174KB) ( )   The precise evaluation in resistance of bridge is a important task and load test is important content of it. On the basis of testing a lot of bridges, in order to get scientific and safe testing technology, the writer analyses the common issues of bridge testing precision and precise evaluation in resistance of bridge. The result of analysis is useful in practice. Related Articles | Metrics

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Analyses method about real values of stress in bridge construction survey ZENG De-rong 2005, 24(6): 18-20,24.  Abstract ( )   PDF (173KB) ( )   This paper discusses the elements of stress error in bridge construction survey, it gives the methods which analyiz the error, some suggests about construction survey are posed and may be used for new bridge construction survey. Related Articles | Metrics

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The analysis of temperature influnece on empty shape of suspension bridge ZHANG Yong-shui, LUO Hong, WANG Zu-hua 2005, 24(6): 21-24.  Abstract ( )   PDF (194KB) ( )   Temperature have comparatively big influence on the empty cableshape of suspension bridge,durning the building of the empty cableshape,temperature play the roles that not only changing the length of the cable,but also causeing the deflextion of the main tower,and both of them lead the changing of the cableshape. In this thesis,I analyse the temperature influnce on the cableshape, and based on this, I provide the designed programes for counting the cable shape and the deflexion of the main tower,with examples and instruction, as reference for technicians of bridge building. Related Articles | Metrics

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Passing program designing and practice on the heavy-duty equipments of Baihe power station which have to pass bridges and culverts MENG Yun, FU Xin-hua, PENG Zuo-jun 2005, 24(6): 25-28,43.  Abstract ( )   PDF (225KB) ( )   Carrying the heavy-duty equipments of Baihe power station to the factory have to pass 121 bridges and culverts. If using the traditional methods to consolidate all the bridges and culverts, the lose of economy is gigantic. Not only because of the big investment and long project time limit, but also electricity generating will be delayed. Through the repetition testification, employed the scheme which included direct pass, erected the temporary steel bridges, consolidation and supplying the intensity. This scheme can carry the equipments to the factory economically, quickly and safely. Moreover, it started a referential new way for interior of country heavy-duty transportation. Related Articles | Metrics

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Application of vacuum grouting in Rongqiao bridge XIAO Guang-hong, ZHANG Qiu-ling 2005, 24(6): 29-30,43.  Abstract ( )   PDF (138KB) ( )   Base on the construction practice of post-tension prestressed concrete, the common method of grouting can not make the grout mass that can be got by vacuum grouting. The vacuum grouting method is continuously used in post-tension prestressed concrete in recent years and this paper introduce the new construction technology of vacuum grouting according to the construction experience of Rongqiao bridge in the Chongqing city. Related Articles | Metrics

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Visible and dynamic simulation research on arch bridges construction CHEN Zheng-bin 2005, 24(6): 31-35.  Abstract ( )   PDF (216KB) ( )   Computer simulation of arch bridge building development is a dynamic research on arch bridge construction conducted with Motion and Video Posts modules of 3DS MAX 6.0. The result visibly shows the building process and the characteristics of arch bridge construction technology. The research can supply more exact data for the feasibility study and planning analysis of arch bridge construction scheme. Related Articles | Metrics

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Application of grouting technique in Longtan super long tunnel CHEN Zhang, CHEN Guang-ming, CHENG Jiu-sheng, HU Yi-hua 2005, 24(6): 36-39,54.  Abstract ( )   PDF (239KB) ( )   Longtan tunnel is a super long tunnel, about 8.7 km long, in the main route of Hu-rong national highway from Yichang to Enshi. Considering preventing disaster and underground water protection and so on, it used grouting technique. And the result is applicable for actual engineering. Related Articles | Metrics

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Experimental study about short concrete column limited with GFRP YANG Qing-guo, YI Zhi-jian, HE Xiao-bing, MA Yin-hua 2005, 24(6): 40-43.  Abstract ( )   PDF (221KB) ( )   Glass Fiber Reinforced Plastics(GFRP), a new kind of engineering material is widely used in civil engineering to strengthen old structures. The article studies the performances of short concrete column limited with GFRP under axial load in lab and compares them with that of short common concrete column and concrete column with spiral reinforcement. Experiments show that under axial load the short concrete column limited with CFRP has an amazingly higher lording capacity. The article is helpful to use the concrete column limited with CFRP and strengthen old column with CFRP. Related Articles | Metrics

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Research on clear protective thickness of the concrete under the prestressed steel for thin-wall box-beams XU Yong-mei, ZHOU Zhi-xiang, SHEN Xiao-jun 2005, 24(6): 44-47.  Abstract ( )   PDF (178KB) ( )   Based on the experiment of a 30 m-span prestressed concrete thin-wall box-beams, the reason why the longitudinal cracks appear along prestressed steel during the tensioning is analysed. For thin-wall box-beams prestressed element, the disadvantaged influences resulted from both possion effect and opposite acting force due to the deformation of beams is considered while the needed longitudinal prestress is acquired. And the model from the engineering design's viewpoint is established. And a formulation of the protective thickness of the concrete under the prestressed steel has been suggested. Related Articles | Metrics

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Analyses on the reliability of concrete filled steel tubular beam-columns in highway engineering TU Ling, LIU Xiao-yu 2005, 24(6): 48-50.  Abstract ( )   PDF (145KB) ( )   According to "unified standard for reliability design of highway engineering structures" GB/T50283-1999, the reliability of the formulas for the design of CFST beam-columns is analyzed, which is given in the "Code for design of steel-concrete composite structure" DL/T5085-1999. The result shows that the reliability of the formulas can meet the requirement of reliability index set in the GB/T50283-1999. Related Articles | Metrics

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The method on estimating fatigue surplus life of transversely tensioned prestressed concrete in the loading of mutil-leveling changing scope ZHENG Yi, XIANG Yang-kai, ZHOU Zhi-xiang, WANG Tao 2005, 24(6): 51-54.  Abstract ( )   PDF (177KB) ( )   Comparing with the estimating method of fatigue life and fatigue strength in the past, It is deduced that the formula of fatigue life of transversely tensioned prestressed concrete. To the problem that it is difficult for determining damaged fatigue lasting limit instantaneous value with no unit in the formula, m is determined, combining with mathematics and writing program, so the difficulty mentioned is avoided. And it is computed that the part of data from fatigue tests of transversely tensioned prestressed concrete, and reasonable result is gained. So correction of the formula is verified. Related Articles | Metrics

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The mechanism of the carbon fiber reinforcement technology and application XU Zu-huai 2005, 24(6): 55-58.  Abstract ( )   PDF (182KB) ( )   This article analyses the new complex stress system of the carbon fiber reinforcement beam "steel beam-concrete-carbon fiber" and sets up the simplified mechanical model of the reinforcement beam system. It explains the reinforcement mechanism of the concrete beam by introducing the distribution coefficient of section moment. It also gives us the incidence formula which related to the material, geometric demension, steel area radio of the beam and the amount of carbon fiber, and we can get the moment which the concrete beam and the carbon fiber bears apart. The arthor also gives the reinforcement engineering of the prestressed hollow slab bridge which has the 3*80 m long span and located in one highway as an example,it surely improved that the carbon fiber reinforcement technology used for the bridge reinforcement engineering is easy and reliable. Related Articles | Metrics

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The investigation on water stability of the AK13-I anti-sliding layer fiber asphalt mixture YANG Da-tian, PENG Zuo-jun, YANG Xi-wu 2005, 24(6): 59-62.  Abstract ( )   PDF (182KB) ( )   Based on the indirect intense experiment of the freezing-thawing and the ratio of the remnant degree of freezing-thawing split,evaluating water stability of the AK13-I mixture added by fiber percent, moreover,anslysing the cause of water stability. Related Articles | Metrics

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Study on asphalt mixture's road-related performance of multilevel dense built-in structure PENG Bo, YUAN Wan-jie, XUE Peng-tao, CHEN Zhong-da 2005, 24(6): 63-66.  Abstract ( )   PDF (179KB) ( )   In order to meet the need of high-grade highway's surface functions and optimize the dense framework aggregate grading design of asphalt mixture,the asphalt mixture of multilevel dense built-in grading was presented on the stage filling theory and particle interfering theory and the bailey method as test criterion.By comparing all kinds of load-related performance with SMA,the results show that the asphalt mixture of multilevel dense built-in grading possesses the better high temperature stability,water stability,fatigue and durability and skid resistance capability.At the same time,it can also meet cold crack resistance requirement in some climate zones. Related Articles | Metrics

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The bending tensile test of geotextile reinforced asphalt concrete beam WANG Wei-hua, ZHANG Wei-quan, HU Ji-long 2005, 24(6): 67-70.  Abstract ( )   PDF (174KB) ( )   Based on the studing of the flexural tensile test of geotextile reinforced asphalt concrete beam, the author proposes the cracking resistance coefficient to depict the resistance to rupture, results the conclusion that geotextile reinforced asphalt concrect pavement is useful to enhance the pavement's service life and resistance to rupture. Related Articles | Metrics

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Properties of recycled road concrete aggregate and experimental study of its application on pavement YANG Qing-guo, YI Zhi-jian, REN Chao, YING Wen-zong, LU Jiang-guo 2005, 24(6): 71-75.  Abstract ( )   PDF (209KB) ( )   The waste old road concrete can be crashed as recycled aggregate by taking rational techniques. The authors researched the physical and mechanical properties of recycled aggregate in detail through experiments, and based on it, study the its application on base course and the surface course in road pavement. According to the experiments, the conclusions can be easily drawn that recycled concrete aggregate can be used as aggregate in road pavement construction. Related Articles | Metrics

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A method of ultra thick compacting and quality controlling for cement stabilized crushed stones base HAO Xiu-min, YE Qiao-ling, FENG Xiao 2005, 24(6): 76-78,87.  Abstract ( )   PDF (174KB) ( )   By optimizing construction technology,improving construction equipment, conventional stratified payment of base course is changed into one layer payment, successfully realizes fast construction of asphalts under heavy traffic capacity,enhances construction efficiency and whole intensity of pavement.It solves the technological questions that upper and lower payment of base course of asphalts is separate construction, costs much and is too long,conventional construction easily produces fissure of air shrinkage, upper and lower half-rigid pavement have no good whole can not combine with asphalts finely,capacity of resistance to shear is bad,driving easily results in pushing deformations.It reduces construction period of 30%,economic and social benefit is very good. Related Articles | Metrics

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A comparative study on modification effect of branched and linear SBS RAO Xiao-yu, ZHOU Jin-chuan, ZHANG Zhi-qiang, ZHANG Yong-xing 2005, 24(6): 79-82.  Abstract ( )   PDF (186KB) ( )   Branched modifier BM and linear modifier LM are used to modify three kinds of domestic base bitumen KL, PJ, LL. Effect exerted by structural type of SBS on high temperature stability, resistance to fatigue cracking and resistance to low temperature cracking of base bitumen is discussed from the meaning of rheology. Related Articles | Metrics

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The design of the polymer cement concrete pavement and the analysis of test road YAO Hong-yun, LIANG Nai-xing, SUN Li-jun, MENG Jing-yu 2005, 24(6): 83-87.  Abstract ( )   PDF (214KB) ( )   By comparison to common cement concrete, this paper designs the thickness of 15 percent adulterant polymer cement concrete pavement and finds the thickness can decrease 8 cm; Then the maximal stress and strain loaded on polymer cement concrete pavement under the most disadvantage load is some larger by use of the ANSYS software, however, that can not affect its carrying capacity because the flexural strength and the resistance of distortion of polymer cement concrete are much larger than common cement concrete; Last this paper discovers that the performance of polymer cement concrete test pavement is good after using a year. Related Articles | Metrics

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Revision of the productivity and consuming rate of fuel of asphalt batch mixer under tableland circumstance CHEN Li-hui, GUO Xiao-hong 2005, 24(6): 88-90.  Abstract ( )   PDF (158KB) ( )   The productivity and consuming rate of fuel of asphalt mixing plant are obtained under standard circumstance. According to the theory of energy balance, the thesis derives and arranges calculation formulas that are about the productivity and consuming rate of fuel of asphalt batch mixer. Related Articles | Metrics

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Intelligent material and its application in civil engineering ZHENG Zhi-neng, ZHANG Yong-xing, DONG Qiang 2005, 24(6): 91-94.  Abstract ( )   PDF (192KB) ( )   In this paper, the concept, buildup and characteristic of the intelligent material are put forward. And then the application of the intelligent material to civil engineering is discussed. The use of intelligent material will drive the civil engineering to the smart future. Related Articles | Metrics

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Analyses on ground surface settlement due to extra-shallow-underground-pipe jacking with curve by stochastic medium theory GONG Shang-long, YANG Zhuan-yun, CHEN Si-tian 2005, 24(6): 95-98,103.  Abstract ( )   PDF (237KB) ( )   By using stochastic theory, settlements of ground surface over a extra-shallow-underground-pipe jacking with curve in Drainage Engineering in the down town area of Chongqing City are analyzed, and the simplified calculate formulas are deduced. Comparison between calculated and measured settlements shows that they are relatively approximate. So it is demonstrated that stochastic medium theory is applicable for actual engineering. Related Articles | Metrics

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Comparison of analytical methods for slope stability WANG Zhao-hui, XIAO Sheng-xie, LIU Wen-fang 2005, 24(6): 99-103.  Abstract ( )   PDF (230KB) ( )   Several widely used analytical methods for slope stability that were derived from the ultimate equilibrium theory are compared in this paper. Their applicable range and accuracy have been discussed respectively and verified with three practical examples. It is concluded from the results of analyses that:the result from linear slip surface method is a bit high; on the contrary Sweden circular slice method is a bit conservative; the simplified Bishop method can be used effectively in evaluating slope stability. Related Articles | Metrics

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Preliminary research on formation and long-term stability of cliff along the bank of the Three gorges reservoir TANG Hong-mei, WANG Chang-xian, CHEN Hong-kai, YE Si-qiao 2005, 24(6): 104-107.  Abstract ( )   PDF (188KB) ( )   Cliff is common landform in mountainous area, resources of unstable rock disaster to develop too. Taking Taibaiyan cliff, locating in Wanzhou in the Three Gorges Reservoir region, as an example, authors approach formation process of cliff through bond mechanism of unstable rock in this paper, and point out that cliff is the inevitable results for unstable rock to develop. Parameters between link-ratio of control fissure of unstable rock and Young's modulus and damage degree of unstable rock are presented. Calculate method of creep stability time of micro-bond for unstable to develop is set up in aging constitute equation of rock, specially appraise method of long-term stability of cliff is provided too. The results show that stability time of micro-bond of the cliff is 891~15904 years, and unstable rock will develop gradually in next 80 thousands years. Related Articles | Metrics

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Analysis on reliability of piles for resisting slide TANG Fen 2005, 24(6): 108-111.  Abstract ( )   PDF (181KB) ( )   Based on analysis on failure state of piles for resisting slide, athor calculated the average values and variations of middling variables with Rosenblueth method. Such as slide thrust, winging moment and shearing force, the design intensity of pile, the nuzzling into rock depth, functions and so on. Assuming that variables obey normal, failure probability of piles for resisting slide was analyed. Related Articles | Metrics

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Research on general control models of giant debris flow along highway and application TANG Hong-mei, CHEN Hong-kai 2005, 24(6): 112-115,122.  Abstract ( )   PDF (326KB) ( )   Hitherto, giant debris flow along Highway is one of disasters along Highway that haven't controlled effectively. According to features of control giant debris flow along Highway, some control techniques that are effective to giant debris flow along Highway such as high-speed drainage structure, submerge tunnel, converge techniques of wing-shaped pier and piles arrangement to counter the debris flow are developed[1,2]. Based on giant debris flow along Highway, the authors establish four general control models using these control techniques in this paper. i.e. the first general control model is composed of block-gravel dam and high-speed structure, the second model is composed of submerge tunnel and high-speed structure, the third model is composed of converge techniques of wing-shaped pier and submerge tunnel, and the forth model is composed of piles arrangement to counter the debris flow and high-speed structure. Further, suitable conditions and key problems every control model is discussed in the paper. Some testing engineering about these general control models are applied since 1999, which display comfortable effect. It is to say that these general control models provided in the paper are suitable for giant debris flow along Highway. Related Articles | Metrics

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A calculating method for bed roughness based on debris flow velocity in curve LI Dan, CHANG Xu, CHEN Ning-sheng, WU Guo-xiong 2005, 24(6): 116-118,125.  Abstract ( )   PDF (184KB) ( )   Bed roughness is the important parameter of debris flow velocity. Because the theoretic calculation is very complex, so the experimental method is used often, Sometimes the method will bring about calculation error. On the basis of freeboard phenomenon in curve way and the improvement of curve flow velocity, this paper gets a useful calculating method of bed roughness. Related Articles | Metrics

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Stability analysis for stochastic dynamic traffic assignment models JIAO Hai-xian 2005, 24(6): 119-122.  Abstract ( )   PDF (182KB) ( )   In this paper, some important stability of discret-time stochasic dynamic traffic assignment models is proved carefully by stochastic theory. It is found that the feasible time-varying route flows is a irreducible non-periodic homogeneous Markov process in the M-multiple traffic state space and deal with the alongrithm of the stable distribution and average value introduced. Related Articles | Metrics

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Study on the freeway induced traffic volume economic forecasting YANG Long-hai, ZHANG Xi-qiao, AN Shi 2005, 24(6): 123-125.  Abstract ( )   PDF (144KB) ( )   Through analysis of the relationship between economic growth along freeway and variety of traffic volume, the assumption that the ratio of the price and volume were steady is proposed, and the induced traffic volume of economic forecasting model is established. Then the parameter of the induced traffic volume of economic forecasting model and relevant function models are provided, and the method and step of the induced traffic volume predicting are discussed. Finally, a real instance is adopted to validate the method. Related Articles | Metrics

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The city transportation intelligence information system based on transit LI Shu-qing, ZHU Sheng-xue, REN Hong-tao 2005, 24(6): 126-128,159.  Abstract ( )   PDF (183KB) ( )   This paper begins with the city road transportation information system frame, analyzing the possibility to establish the transportation intelligence information system according to the city transit, putting forward the intelligence information system frame based on city road transit, pointing out the method and model of collection, treatment, evaluation, announcement, and application of the city road transportation information. Related Articles | Metrics

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Study on traffic volume condition of setting bus lane LIU Wei, BIE Mu, ZHANG Jian-xu, ZHU Shun-ying 2005, 24(6): 129-132.  Abstract ( )   PDF (176KB) ( )   This paper studies on the road and traffic condition, analyzes the lane utilization rate? degree of saturation and the factors of bus volume and non-bus volume. Sets up critical traffic volume modal for setting bus lane and discusses factors of influencing the modal. Related Articles | Metrics

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Study on supply chain relationship coordination management JIANG Yang-sheng, CHEN Yan-ru, PU Yun 2005, 24(6): 133-136.  Abstract ( )   PDF (184KB) ( )   In this paper, A new research issue in Supply Chain domain that Supply Chain Relationship Coordination Management is put forwarded firstly. Then from the point view of SCSCM's complex system's characteristics, definitions, difference form traditional enterprise management model, etc seven aspects, the above issue is systematically demonstrated. On the basis of these, the definition of Supply Chain Relationship Coordination Management is given and the structural contents of it is discussed, the research methodology is analyzed at last. Related Articles | Metrics

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Research on a new-type vehicle navigation and monitoring system SHEN Xue-song, LIU Jian-ye, SUN Yong-rong, CHEN Wu 2005, 24(6): 137-140.  Abstract ( )   PDF (200KB) ( )   Short-range wireless communication technology-Bluetooth is adapted to realize high precision navigation and positioning based on GPS/DR/MM/BB integrated Kalman filter algorithm. Then navigation computer based on DSP chip is designed, USB communication and data storage with enormous capacity are realized, which enable the functions of "Black Box" come into reality. Finally, a mass of field tests for principle prototype are made, which shows that the proposed integrated navigation algorithm is effective and feasible. Related Articles | Metrics

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Exploration about the staking-out methods of ellips curve HE Ze-ping, CAO Zhi-xiang, FENG Xiao 2005, 24(6): 141-143.  Abstract ( )   PDF (143KB) ( )   This paper analyse the staking-out parameter calculation method of ellips curve's by the method of poplar cooradinates based on the ellips geometry and architectural design parameter, Combine theory with practice, expound the staking-out method about the ellips building and structural member. Related Articles | Metrics

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Briefly discussed the risk of the build-transfer project in construction SHEN Qi-ming 2005, 24(6): 144-147.  Abstract ( )   PDF (175KB) ( )   This paper analyzed the present condition and feature of the Build-Transfer Project (abbreviation BT Project),discussed the risk of the BT project Proprietor, Investor, Contractor and supervisory Engineer in BT project construction. Related Articles | Metrics

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Comparative statics analysis for first price sealed bid auction and procurement LI Jian-zhang 2005, 24(6): 148-151,163.  Abstract ( )   PDF (278KB) ( )   This paper obtain some comparative statics results for first price sealed bid auction and procurement by the methods of integral,which are essentially generalization of the results of Riley and Samulson by the differential methods to the bidders of risk aversion or risk seeking or hybrid. Related Articles | Metrics

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Navigation technice research for refulation peak in flood season of Three Gorges Power Station SHU Rong-long, ZHOU Xiao-ping, DU Zong-wei 2005, 24(6): 152-155.  Abstract ( )   PDF (184KB) ( )   The Experiment study on influence of TGP regulation the peak flood to the navigational condition between two dams shows, the regulation peak has the characteristic with large discharge, widely discharge variation and water level fluctuant and so on. During the adjust peak, the velocity and slope during two dams are higher than low water evidently, the influence on navigation is obviously. When the released discharge diurnal average is between 10000 and 15000 m3/s, the navigation condition can meet the requirement of 10000 tons ship team, but when the discharge exceed 20000 m3/s, the velocity and slope at important bar between two dams are near or over the allowable value, the upward ship team sail difficultly. Related Articles | Metrics

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The next Web Forms——Xforms LIU Ke-zheng 2005, 24(6): 156-159.  Abstract ( )   PDF (186KB) ( )   Research on next generation web forms comes from designing applications of information manager system. This article describle the principle of XForms and XForms Processing model. In the end, some deficiencies of XForms are analyzed and some viewpotios are put forward. Related Articles | Metrics

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Carcinogenic function of carcinogen in the drinking water and its control CAO Pei-juan, WANG Ding-yong 2005, 24(6): 160-163.  Abstract ( )   PDF (182KB) ( )   This paper analyses species、sources and carcinogenic function of organic and inorganic carcinogen existing probably in the drinking water,and further discusses physical、chemical water treatment techniques and biological pretreatment processes applying to remove these carcinogen. Related Articles | Metrics