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15 February 2004, Volume 23 Issue 1 Previous Issue    Next Issue

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Developement and research prospect of new CFRP bridges WU Hai- jun, LU Ping, ZHOU Zhi-xiang 2004, 23(1): 1-5.  Abstract ( )   PDF (178KB) ( )   The mechanical property of main FRP product is compared,and the feasibility of the use of CFRP in new bridges is discussed based on detailed data. New development of CFRP beam bridges and cable bridges is described, and several examples are given. The problem of the economical efficiency of CFRP bridges is analyzed. Some advices for the research of CFRP bridges are presented References | Related Articles | Metrics

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Quality of vertical joints in continuous rigid bridges and its influence on the post-construction deflection of the bridges HE Peng， ZHOU Zhi-xiang， JI Guo-fu, LIANG Fa, 2004, 23(1): 6-9.  Abstract ( )   PDF (177KB) ( )   In the paper one of the crucial causes of the excessive post-construction deflection generally occurring on large-span prestressed-concrete continuous rigid bridges, the quality of the segmental vertical joints, is analyzed. The shearing creep of the concrete filling the vertical joints under long-term loads is discussed to find that, in the case of the existent construction procedure, the increments of the deflection of the bridge main girders resulting from the shearing creep of the vertical References | Related Articles | Metrics

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Study and improvement of assessment ayatems for asphalt pavement performance SONG Xiu-lian，SONG Jin-hua， WANG Li-xin, MA Ze-ming 2004, 23(1): 10-12.  Abstract ( )   PDF (126KB) ( )   According to the problems of the fuzzy mathematical model in pavement assessment systems,the paper puts forwards a new synthetic assessment system based on attribute mathematical theory and Analytic Hierarchy Process(AHP). The paper builds the indexes system and decides the weights of the indexes,the new system gives more scientific and accurate result. In the end the paper introduces the applicaion of that model with an example References | Related Articles | Metrics

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Property study of the polymer cement grout YAO Hong-yun, LIANG Na-i xing, WANG Hua-he, MENG Jing-yu4 2004, 23(1): 13-17.  Abstract ( )   PDF (267KB) ( )   The paper systematically studies the work capability,mechanics property and the durability of the polymer cement grout through tests and theoretical analysis. The increasing degree of the flexural strength, the decreasing degree of the compressive strength and modulus and the improvement of the durability and work capability are studied systematically. References | Related Articles | Metrics

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Property study of the polymer cement grout ZHANG Yi-luo , 　CHEN Feng-tong , 　GE Yong-wei 2004, 23(1): 19-21.  Abstract ( )   PDF (130KB) ( )   The paper systematically studies the work capability,mechanics property and the durability of the polymer cement grout through tests and theoretical analysis. The increasing degree of the flexural strength, the decreasing degree of the compressive strength and modulus and the improvement of the durability and work capability are studied systematically. References | Related Articles | Metrics

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Influence of different gradation of aggregate on the mechanical properties and performance of asphalt mixture FAN Tong-jiang 2004, 23(1): 22-25.  Abstract ( )   PDF (132KB) ( )   In this paper the study of the mechanical properties and performance on the three SMA mixtures compared with that of one AC mixture is carried out. The results have shown that when most other conditions are of consistencg,the asphalt mixtures present the obviously different mechanical properties and performance if the gradation of aggregate mixture are changed.When the gradation of aggregate mixture is optimum,the mechanical properties and performance of asphalt mixtures will be enhanced greatly References | Related Articles | Metrics

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All steps simulating of middle-wall method in tunneling engineering with soft and weak surrounding rock YI Ya-bin , 　CHEN Shao-hua 2004, 23(1): 26-29.  Abstract ( )   PDF (154KB) ( )   This paper explains some important matters such as function of every support, state of stress, time of constructing support in current tunneling engineering by middle-wall method on the basis of all steps simulating of a tunnel engineering with soft and weak surrounding rock References | Related Articles | Metrics

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Present situation and problem analysis of Chongqing toll highways HE Zhao-yi, TAN Ba-i ming, XU Mao-zeng, XU Ren-an, MENG Hua 2004, 23(1): 30-35.  Abstract ( )   PDF (1102KB) ( )   Based on an overall survey of Chongqing toll highways,present situation and problems of Chongqing toll highways are comprehensively analysed,Finally the main problems influencing toll highways’development are proposed References | Related Articles | Metrics

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Objective fuzzy evaluation of highway traffic and economic development adaptability ZHU Shun-ying, WANG Hong, ZHU Zhen-cai 2004, 23(1): 36-41.  Abstract ( )   PDF (201KB) ( )   By discussing the implications of highway traffic and economic development adaptability basied on the meaning of adaptability and economic development, and designing the evaluation attributes (indexes), building their calculation models, explaining their quantitative processes, putting forward objective fuzzy evaluation method, determining their comment sets, value scales and fuzzy functions, Chinese highway traffic and economic development adaptability from 1991 to 1999 is evaluated and inadapt References | Related Articles | Metrics

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An objective method to calculat the importance of highway node LIU Wei,ZHU Shun-ying,ZHANG Jian-xu 2004, 23(1): 42-44.  Abstract ( )   PDF (938KB) ( )   When calculating the highway nodes’ importance, ordinarily the indexes and their weights of the nodes are subjectively decided. This paper brings forward a new method to select the indexes of the nodes and get their weights objectively based on Degree of Gray Incidence. This method can avoid arbitrariness References | Related Articles | Metrics

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Traffic demand analysis and forecast of highway construction projects WANG Jian-jun, LIU Jian-chao, CHEN Kuan-min 2004, 23(1): 45-48.  Abstract ( )   PDF (617KB) ( )   According to the thought of traffic analysis and forecast program of highway construction,the role of the highway project in the tremsportatim network and forecast of theregional social and economic development,the traffic production and attraction,the traffic distribution and the traffic assignment are elucidated in the paper.As a result,a rational theory basis is provided for predicating the traffic volumar of highways References | Related Articles | Metrics

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The program characteristic of supervision work YU 　Qing-he 2004, 23(1): 49-51.  Abstract ( )   PDF (99KB) ( )   This paper discussing the necessary condition of supervision work program characteristic is to guarantee rationalization ,standardization of supervision work, discussing the relationship of program characteristic of supervision and the program with the major, the relationship of the competence with the program , and so on References | Related Articles | Metrics

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The investment risk grey association identification model in construction phases of projects CHEN Yuan-xiang, ZHOU Gao-ping 2004, 23(1): 52-53.  Abstract ( )   PDF (121KB) ( )   The paper sets upan investment risk grey association identification model applying grey system method.The model can be used to evaluate investment risk and determine the main risk factors References | Related Articles | Metrics

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Public trolley-bus transportation and rational utilization analysis of city energy resources JIAN Xiao-chun , 　LI Ben-ji 2004, 23(1): 54-57.  Abstract ( )   PDF (203KB) ( )   on the basis of illustrating the present situation of natural resources and consumptive structure of conventional energy resources,the paper makes a survey of the world public transportation development,and analyses the positive role of trolley-buses remedying the utilizition state of city energy resources,and raising the utilization efficiency of energy resources in the process of developing public transportation References | Related Articles | Metrics

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Contemporary concrete technology used in urban construction WANG Rui-yan 2004, 23(1): 58-61.  Abstract ( )   PDF (135KB) ( )   As building material, concrete is wildly used in urban construction, and has become a great load to environment. Studying and applying contemporary concrete technology will be more and more important for continuous development of urban construciton References | Related Articles | Metrics

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Discussion of implication of program statistics and Count in supervising highway project construction LI Qiong 2004, 23(1): 62-65.  Abstract ( )   PDF (138KB) ( )   Program statistics and count play important place in supervising highway project construction. The paper sums up the experience of supervising panzhihua bingcaogang jinshajiang bridge construction, and methods of carrying out program、statistics and count.And Some suggestions are given in this paper as well References | Related Articles | Metrics

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Application of dynamic compaction method in dealing with high fill roadbed in retaining wall engineering ZHOU Sh-i liang, HU Xiao, WANG Duo-yin 2004, 23(1): 66-68.  Abstract ( )   PDF (521KB) ( )   In the paper, based on the engineering practice of high fill roadbed dynamic compaction in the construction of river bank road, in Chongqing region, some problems such as parameters designing and quality examining of high fill roadbed dynamic compaction in retaining wall engineering is analyzed. It is derived that dynamic compaction method is the most shortcut economic efficacious method in dealing with high fill roadbed soil of retaining wall engineering References | Related Articles | Metrics

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Reliability index analysis of tension piles based on Monte-Carlo method QUE Yun, LIU Ming-wei, XIONG Guo- wei 2004, 23(1): 69-72.  Abstract ( )   PDF (159KB) ( )   The paper describes the reliability index analysis of tension piles with Monte-Carlo method based on engineering examples. The computation results testify that tension piles tend to be more safe if uncertainty of soil bearing capacity is taken into account ,the reliability index is sensitive to the calculation mode and the average and deviation coefficient of the reduction coefficient of lateral friction resistance of piles without regard to uncertainty of soil bearing capacity, and the deriati.. References | Related Articles | Metrics

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Discussing on two important parameters’ distribution regulations for reliability analysis of reinforced earth structures LIU Ming-wei , , 　WANG Duo-yin , 　HE Guang-chun 2004, 23(1): 73-77.  Abstract ( )   PDF (159KB) ( )   Parameters of action and resistance factors for reinforced earth structures and distribution modalities have marked effect on reliability calculation. According to feature of reinforced earth structures and experimental results, the authors apply mathematical statistics method to analyze physical and mechanic parameters of filling materials gravity(γ) and reinforced materials tensile force, and results show reasonability by engineering examples checking. The results give a reference to the new c References | Related Articles | Metrics

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Discussion about calculating the stabilization coefficient through transfering coefficient method ——Wanzhou Taibaiyan middle east segment unstable slopes as the example YI Peng-ying, TANG Hong-mei 2004, 23(1): 78-80.  Abstract ( )   PDF (149KB) ( )   Based on example of calculating the stabilization coefficient of Wanzhou Taibaiyan unstable slopes in Chongqing through transfering coefficient method,the contradiction that when the stabilization coefficient of a traction slope arrives at a safe level,a surplus strong thrust is still existing. The paper deeply analyses that problem and judges the slope stability with the local stabilization coefficient method or the corvversely determined stabilization coefficient method References | Related Articles | Metrics

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Research of synthetic treatment of loose earth landslides along the bank of the Three Gorges Reservoir YE Si-qiao ,TANG Hong-mei 2004, 23(1): 81-84.  Abstract ( )   PDF (142KB) ( )   Aiming at synthetic treatment of loose landslides along the bank of the Three Gorges Reservoir,the paper chooses Hongxigou Landslide ,situated in Wanzhou of Chongqing, as an example of loose earth landslide, illustrates the particularity of the controlling of landslide bank of the Three Gorges Resrvoir, analyzes the stability of the landslide ,then adopts sythetic measures to treat it,which could successfully avoid the harm from the landslide and provide constructional field to local people References | Related Articles | Metrics

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Synthetic treatment of Taibaiyan dangerous rock in Wanzhou district of Chongqing YE Si-qiao, CHEN Hong-kai, TANG Hong-mei 2004, 23(1): 85-89.  Abstract ( )   PDF (182KB) ( )   The treatment of dangerous rock should be implemented based on the full analysis of the surrounding conditions,the rational classification,and the suitable combination controlling with drainage and monitoring,and the synthetic method should be chosen to treat the dangerous rock effectively and insure the holistic and local stability References | Related Articles | Metrics

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Analysis of washing-away dumped rockfill dam in mountain river LIU Run-gang 2004, 23(1): 90-94.  Abstract ( )   PDF (168KB) ( )   In this paper, causes of washing-away dumped rockfill dam in mountain river are analyzed and measures for preventing it are discussed as per the size and paving method of surface and center filling rock for groyne and longitudinal dam washed away on Bacao, Bayou, Longdu,Yanjia and Bajiao critical shoals in Beipan river References | Related Articles | Metrics

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Characteristics of broad-shallow shifting rivers in Xinjiang province DONG Yu-wen ,HU Jiang ,YANG Sheng-fa 2004, 23(1): 95-99.  Abstract ( )   PDF (160KB) ( )   Based on field survey and investigation,the characteristics of flow and sediment of broad shallow rivers in Xinjiang province are analysed ,and the characteristics of flow shifting are expounded. The results show that broad shallow rivers in Xinjiang have characteristics of low flux ,steep gradients and high flow velocity. In addition,those rivers have characteristics of coarse bed materials,high sand load ,quick change in scour and fill and obvious shifting banks.The characters differ from thos References | Related Articles | Metrics

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Discussing the riverbed evolution ary regularity of the bottle-neck reach —Sampling manting river reach of Lancanjiang river DEN Ming-wen, DONG Yu-wen, HU Jiang, SHU Yu-qing 2004, 23(1): 100-102.  Abstract ( )   PDF (450KB) ( )   Selecting Manting river reach as the sample,the plain-form,characteristics of the flow and riverbed evolutionary regularity are discussed by generalized fixed-bed and mobile-bed river engineering model.Results show that the surface curve of the bottle-neck reach is polygonal line,and riverbed evolution represents the characteristics of fluctuating backwater area and plain tract such as scouring when water flooding,falling and at upper course ,filling when water rising ,in falling water stage and References | Related Articles | Metrics

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Principle of sustainable development & ecology residential districts SHEN Ping 2004, 23(1): 103-105.  Abstract ( )   PDF (184KB) ( )   Construction of ecological residential districts is a new tendency of real estate in China.It is the requirement of sustainable development, too. Base on general expla nation of the conception of ecological residential districts,the thesis emphasizes the ecological residential district should be a comprehensive embod iment of natural ecology, cultural ecology and economic ecology. It also an operable suggestion for constructing ecological residential districts under present conditions References | Related Articles | Metrics

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Multiprotocol label switching (MPLS) system architecture CAO Jian-qiu 2004, 23(1): 106-108.  Abstract ( )   PDF (112KB) ( )   MPLS is a wideband network technology put forward by IETF of CISCO company in May, 1998. the hardware model and writing steps of MPLS are related and the key technology and core problems of MPLS are simply introduced in the paper References | Related Articles | Metrics

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Topological abstract economy equilibrium theorems WANG Da-cheng 2004, 23(1): 109-111.  Abstract ( )   PDF (157KB) ( )   The paper studies the nonempty intersection property of the set-valued mapping in interval spaces and, a general topological space without linear structure, and establishes several Shafer-Sonneischein equilibrium existence theorems of abstract economy. In the paper, the open questions raised in [3] are partially answered References | Related Articles | Metrics

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A method of uncertain reasoning based on topologjcal transformation WANG Hui-yong, HAO Hai-liang, YANG Xiao-wei 2004, 23(1): 112-115.  Abstract ( )   PDF (148KB) ( )   The research of uncertain reasonjng is the key problem and an active branch in the field of artificial intelligence in reccnt years. There are many methods related to processing and solving uncertain reasoning. In essence,they are all relations constructed between premise and conclusion. In turn,one can solve the reasoning problems by these relations. In the paper,an uncertain reasoning method based on topological transformation is constructed by means of fuzzy topology and fuzzy mathematics the References | Related Articles | Metrics

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Developing of the law-case automatic categorizing system based on law lexicons GUAN Li-he , 　YANG Gang ,LI Yong-li 2004, 23(1): 116-120.  Abstract ( )   PDF (168KB) ( )   The paper discussed and developed a Law-case automatic categorizing system, which makeis a subsystem of the "Law-case Analyzing System".Firstly,the characteristic-word weight tables of each category are gained out of a mass of law-case training documents which have been categorized already.Secondly,the weight summation is conducted for each category based on the weight tables of the characteristic Words.Finally,the related law case falls under the category which is at the leafage of the Category References | Related Articles | Metrics

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Comparative study of the pollution loading of nourishing substances —— nitrogen and phosphorus in Chongqing segment of the Three Gorges Reservoir DU Jun, , ZHANG Hong-hua, LI Jin-song, 2004, 23(1): 121-125.  Abstract ( )   PDF (173KB) ( )   Selecting three pollution sources in the Three Gorges Reservoir: sewage, pesticide and fertilizer non-point from agriculture and wastes of livestock, the paper evaluates the pollution loading of nitrogen and phosphorus, in order to investigate the primary administrable objects in preventing and minifying pollution of water environment in the Three Gorges Reservoir. On the basis of careful and scientific analysis, the paper draws a conclusion that among the three pollution sources, livestock have References | Related Articles | Metrics

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The two sets of scientometic indicators for journal of Chongqing Jiaotong University and its comparison FAN Wen-tian 2004, 23(1): 126-128.  Abstract ( )   PDF (99KB) ( )   The two sets of scientometic indicators with 12 indices for Journal of Chongqing Jiaotong University (JCJU) in 2001 are abstracted from the Chinese S & T Journal Citation Reports (CJCR) and its Expanded edition (CJCRE). According to the magnitudes of these indices the ranks for JCJU are given between the source journals of both citation reports. By 3 indices of CJCRE for JCJU in 2001, the comperehensive evaluation are also conducted and a good results are obtained of which are ranked up fron References | Related Articles | Metrics