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15 June 2002, Volume 21 Issue 2 Previous Issue    Next Issue

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Rib assemble and construction control calculation of Zhejiang Sanmen Jiantiao bridge ZHOU Shui-xing 2002, 21(2): 1-5.  Abstract ( )   PDF (168KB) ( )   This paper introduces non-bracket construction method, through which main tower and cable tower are united into one, setting arch segments in Zhejiang Sanmen Jiantiao bridge .Based on this method, the author put forward first the responsive construction control calculation method, then invariable cable method in controlling rib axiss level .It gives calculation equation for segmental control level and tower displacement .It is proved this method is practical . References | Related Articles | Metrics

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Analyses on the lofting arc length in concrete-filled steel tubular (CFST)arch truss bridges ZHOU Shui-xing , XIONG Hong-bin , ZHANG Min , YU Hong-gang 2002, 21(2): 6-8.  Abstract ( )   PDF (110KB) ( )   It is the urgent problem for the lofting length of segmental arc in Truss CFST arch bridges to be solved .The paper analyses main factors affecting the variable of the arc .And deduces the calculation formula in the variable of segmental arc of the truss .The level influence is analysed owing to different arc length variables References | Related Articles | Metrics

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The Principle and methods of earthquake hazard analysis LU Ping , XU Jun-lan , GU An-bang , WU Hai-jun 2002, 21(2): 9-12.  Abstract ( )   PDF (141KB) ( )   The basic principle of seismic risk studies and calculation methods are introduced in detail, and the seismic response model of the site is made in this paper .According to the earthquake hazard analysis on the site, the ground motion parameters are received and the rock time generated seismic wave of the site is composed References | Related Articles | Metrics

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The design &construction of Bijiang long-span bridge LUO Tao 2002, 21(2): 13-15.  Abstract ( )   PDF (131KB) ( )   Taking this bridge as an instance, this paper introduces the main points in the design and construction of long-span prestressed continuos box girder bridges .Moreover the basic solutions and measurements of some common problems during construction References | Related Articles | Metrics

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Judging of the deformation-cracking type and grade about surrounding rock of highway tunnel XU Lin-sheng，LI Yong-Ling, CHENG Chong-Guo 2002, 21(2): 16-20.  Abstract ( )   PDF (161KB) ( )   This paper elaborates the judging methods and bases about surrounding rock deformation-crocking type and grade (i .e .collapse large deformation, gushing water-mud-sand which have something with the carbonatite predissolution actions, rockburst etc .)in the construction process of highway tunnel .The research results have important theoretical and practical significance to the informational construction and adopting advisable cure engineering measures in times References | Related Articles | Metrics

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Measurement and analysis of the surrounding rock vibration during blasting excavation of the Chaodongyan tunnel ZHAO Ming-jie , XU Xi-bin , LIU Xu-hua , AO Jian-hua , WANG Biao 2002, 21(2): 21-24.  Abstract ( )   PDF (187KB) ( )   Based on the measurement and analysis of explosion vibration in the surrounding rock at the Chaodongyan tunnel , the propagation of blasting seismic wave was researched during tunnel excavations .The research results show that the magnitude of explosion vibration has a maximum in the first time excavations explosion .The propagation of blasting seismic wave is very distinctly different in the varied grade surrounding rock at tunnel, and it cal be interpreted by the experience relationship between the vibration velocity and distance .The main frequency of the blasting seismic waves varied with distance shows clearly a good orderliness References | Related Articles | Metrics

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The lay technique by non-anchor bar of waterproof plate in tunnels SHI Wei-feng 2002, 21(2): 25-27.  Abstract ( )   PDF (123KB) ( )   The lay technique by non-anchor bar of tunnel waterproof plate is realized with the plastic circle bed piece and the hot-melt adhere of the waterproof plate, which improves the watertightness References | Related Articles | Metrics

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The selecting of measures of effectiveness of highway network planning ZHU Shun-ying , WANG Hong , LI Guan-shou 2002, 21(2): 28-32.  Abstract ( )   PDF (158KB) ( )   The types, content and objectives of the evaluation of highway network planning are analyzed in the paper . The rules and methods of the selecting of their measures of effectiveness are discussed References | Related Articles | Metrics

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Research on Qinghai-Tibet highway subgrade pavement management system HU Xia-guang , WANG Bing-gang 2002, 21(2): 33-37.  Abstract ( )   PDF (200KB) ( )   Based on the analysis and research on the investigation data of Qinghai-Tibet highway, this paper promotes the evaluation method and its forecast model of Qinghai-Tibet highway subgrade and pavement, and designs Qinghai-Tibet highway subgrade and pavement database .Based on this database, a subgrade pavement management system is presented .This system provides an advanced assistant tool for Qinghai-Tibet highway synthetic management References | Related Articles | Metrics

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Explanations on some aspects of asphalt pavement of expressway WU Guo-xiong , FENG Guang-le , LI Ba 2002, 21(2): 38-41.  Abstract ( )   PDF (127KB) ( )   Some problems will arise if asphalt pavement has been used for several years .The solutions can be considered from structure, material and construction technology .This paper first analyses material choice and appropriate thickness of surface, base, and subbase of asphalt pavement of expressway .Secondly this paper campares and appraises function evaluation structural constitutes of asphalt concrete pavement and its usability by investigating a lot of information of existing expressway asphalt pavement and analyzing their constitutes and function .Furthermore, some suggestions are provided for asphalt pavement design of expressway References | Related Articles | Metrics

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Study on mountain highways alignment design based on TIN GAO Jian-ping 2002, 21(2): 42-44.  Abstract ( )   PDF (153KB) ( )   Triangulated Irrgular Network (TIN)is regarded as an ideal digital terrain model in engineering design .It takes not only the density of topographical points but also the terrain points and terrain lines into consideration .Thereby its application precision can be improved .This paper gives a method to design the alignment of mountian highway which is based on the Triangulated Irrgular Network References | Related Articles | Metrics

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Reflective cracks analysis on asphalt over layer MEI Ying-jun , LI Zhi-yong 2002, 21(2): 45-48.  Abstract ( )   PDF (154KB) ( )   To approach the reflection cracking problem in AC over layer, the mechanism of the reflection cracking were first obtained .Based on this, the paper then launches out a few procedures on how to alleviate or retard the reflective crack due to AC over layer References | Related Articles | Metrics

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A study of microcosmic mechanism of cement FA-bound hoggin for roadbase XIAO Geng, LING Nai-Xing, CHEN Chong-Hua 2002, 21(2): 49-53.  Abstract ( )   PDF (199KB) ( )   By X radial diffraction and EMS, the development progress of microstructure of cement FA-bound hoggin for roadbase was analyzed and the mechanism of its intensity was presented in this paper References | Related Articles | Metrics

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Analyzing about cracking mechanism and prevention and cure measures of semi-rigid base course JIANG Ying-jun , DAI Jing-liang , CHEN Zhong-da 2002, 21(2): 54-57.  Abstract ( )   PDF (135KB) ( )   Based on analyzing the mechanism that semi-rigid base course produced cracks, this paper discussed how to decrease cracks of non-loading type particularly theromal shrinking cracks, and put forward some prevention and cure measures References | Related Articles | Metrics

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Studies on the mechanics mechanism of concrete pavement premature failure YANG Xi-wu,WANG Zhai-shan, XIE Qiang 2002, 21(2): 58-60.  Abstract ( )   PDF (162KB) ( )   To identify the cause of concrete pavement premature failure, twelve pavement structures are analyzed by finite element method in the paper .It is indicated that unsuitable pavement structure and low construction quality can increase the tensile stresses in slab and result in the pavement premature failure .It is conduded that unsuitable pavement structure and poor construction are two main causes which cause concrete pavement premature failure and it is necessary that the pavement structure should be suitably designed and the construction quality must fulfil the design requirements to reduce concrete pavement premature failure and prolong the life of concrete pavement References | Related Articles | Metrics

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The use of new geosynthetics in geotechnical engineering ———The Technique of Reinforced Soils SHI Ming-lei , DENG Xue-jun , LIU Song-yu 2002, 21(2): 61-66.  Abstract ( )   PDF (212KB) ( )   This paper reflected the types and the characters of geosynthetics, and the technique of reinforced soils applied to certain fields in Geotechnical Engineering was presented systematically, in particular to the MSEW and the RSS .The soft soil, the subgrade soils and the in-situ slops enhanced with Geosynthetics as well as FRS were biefly summarized .Furthermore , the methodology of design for reinforced soils the research on theworking mechanism models were discussed emphatically , and besides, the recent development of the technique of reinforced soils applied to this domain was expounded References | Related Articles | Metrics

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Experimental estimation of the compaction effect on high fill-up ground in mountain areas HE Zhao-yi , ZHU Hong-zhou 2002, 21(2): 67-70.  Abstract ( )   PDF (143KB) ( )   According to the future of filling material and the purpose of fill-up, several kinds of test methods used to estimate the compaction effect on high fill-up ground in mountain areas are studied in this paper .And the correlativity between different kinds of test results are analyzed, which is the basis to apply inexpensive and simple test methods .The method given at this paper has been applied to Chongqing Wanzhou Airport construction References | Related Articles | Metrics

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Analysis of dangerous rock and landslide reinforced control project on Jitai expressway ZHANG Wen-ke , HUANG Xiao-hua , TANG Jian-jun 2002, 21(2): 71-73.  Abstract ( )   PDF (153KB) ( )   This article takes high side slope control project of two noth-high cutting slopes between K35 -K36 on the Jitai expressway as example and introduces the engineering practice of prestressed anchorage cable-hanging net sprayed concrete supporting and retainting structure on controlling the dangerous rock and landslid References | Related Articles | Metrics

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The theory of economy of scale and the scale maintenace of expressway JIA Lian-sheng , GUO Xiao-hong , CHENG De-hong 2002, 21(2): 74-76.  Abstract ( )   PDF (106KB) ( )   Based on the theory of economy of scale, this paper discusses the existence, relativity, trend of change and impact factor of income of scale in expressway maintenace References | Related Articles | Metrics

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Applications of computer simulation software in military communications railway transportation WANG Jiao-dong , SHI Xin-sheng 2002, 21(2): 77-79.  Abstract ( )   PDF (109KB) ( )   This paper briefly describes military communication and railway transportation, and discusses the primary design ideas of the simulation software system of military communications and railway transportation .This software presents a method for processing military railway transportation task References | Related Articles | Metrics

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Study of accession to the WTO for the cost consultation of highway WANG Shou-xu , HUANG Peng , LING Jian-xin 2002, 21(2): 80-82.  Abstract ( )   PDF (129KB) ( )   While the rapidly developing of highway construction and the nation standing at the brink of accession to the WTO, it is the most important task that we find methods to deal with the contradiction between the rapidly developing of highway construction with the undeveloped state in the field of the cost consultation .In this paper, those problems are researched into and some solutions are presented References | Related Articles | Metrics

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Some problems for the foundation improvement of the old building DENG Hao , LIU Hong-bo , GUO Jian-gou 2002, 21(2): 83-86.  Abstract ( )   PDF (131KB) ( )   Some problems for the foundation improvement of the old building in Guangdong province were discussed in this paper, including the methods of improvement and design, the evaluation of the foundation improvement of the old building, etc . References | Related Articles | Metrics

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Research on mechanism for fissures to cause in concrete tunnel box CHEN Hong-kai , WANG Rong , TANG Hong-mei , WANG Kai , YUAN Jian-yi 2002, 21(2): 87-89.  Abstract ( )   PDF (147KB) ( )   Based on the analysis of the geological environment for an experimental concrete tunnel box under Shabin road and the circumstance of the distribution and development of cracks in the box, this paper divides these fissures into 3 types, i .e .fissure caused by the settlement of the base, fissure caused by overloads and fissure caused by material. Furthermore, the authors approach the mechanism for fissures to cause in the project References | Related Articles | Metrics

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Research on mechanism for fissures to cause in concrete tunnel box CHEN Hong-kai , WANG Kai , YUAN Jian-yi , WANG Rong 2002, 21(2): 90-93.  Abstract ( )   PDF (157KB) ( )   On the basis of testing in-situ to fissures occurring in buried reinforced concrete box-culvert at Shabin road, Chongqing, the authors divide fissures locating at inter box -culvert into longitudinal fissure and section fissure in the paper , and approach development trend .All results show that fissures at present have made stable before rain season . More research on stability of the box-culvert in rain season, structure safety and harness are done and discussed References | Related Articles | Metrics

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Discussing the relationship between the “Eight Terms Principle” of quality management with project construction quality management LIU Lang,TU Zhong-ren 2002, 21(2): 94-96.  Abstract ( )   PDF (130KB) ( )   Combining the “Eight Terms Principle” of quality management in ISO9000 (2000 Printing)with project construction management, this paper discusses the relationship them and how the project management should carry out the “Eight Terms Principle” of quality management References | Related Articles | Metrics

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The method of identifying dynamically road grade by means of multi-sensor information fusion YANG Zhi-gang , CAO Chang-xiu , SU Yu-gang 2002, 21(2): 97-102.  Abstract ( )   PDF (201KB) ( )   The dynamical identification of road grade angle is one of important techniques for vehicle using an automated mechanical transmission with intelligent shift control, when the vehicle is traveling on sloping road, and is also a difficult technology at present .To solve the problem, in this paper, a method of identifying dynamically grade angle by means of multi-sensor information fusion is proposed, a mathematics model is given and the error of fusion result is analyzed References | Related Articles | Metrics

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The fault diagnosis and fault tolerant control to AMT SU Yu-gang , CAO Chang-xiu , YANG Zhi-gang 2002, 21(2): 103-107.  Abstract ( )   PDF (167KB) ( )   According to the characteristics of the AMT system, the design principles of fault diagnosis and fault tolerant control to AMT system are discussed in this paper .The main potential of factural fault phenomena and their reasons are analysed .And the fault diagnostic model and fault diagnostic methods to the AMT system are presented .It completes the design of fault tolerant control to some key faults in the AMT system .The experiment shows that the design scheme is very practical . References | Related Articles | Metrics

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Research on structural damage and fault diagnosis using measured flexibility matrices HAN Xi , ZHONG Li 2002, 21(2): 108-110.  Abstract ( )   PDF (112KB) ( )   In this paper, the theoretical method of structural damage and fault diagnosis using measured flexibility matrices is put forward .Damage is found through a parametric updating of a large order static finite element model using a much smaller order measurement set .This method is accomplished without any model reduction or eigenvector expansion step .Numerical simulation results demonstrate that the method is capable of locating and quantifying structural damage References | Related Articles | Metrics

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A simple analysis of design scheme of strontium carbonate wastewater processing ZHOU Fu-chun 2002, 21(2): 111-114.  Abstract ( )   PDF (182KB) ( )   The main pollutants of strontium salt factory are CODCr 、S2- 、NH3 -N and SS .The process of “coagulategas float-SBR” was used to deal with wastewater .After the treatment, the COD 、S2- and NH3 -N removal rate is about 90 %, and SS removal rate is about 85 %, with a sati sfied effect on decolourization .The effluent quality meets the reauirements of wastewater discharge standards GB8978 -1996 .The “coagulate-gas float-SBR” process is of advantage for less residual sludge, and less costy .It is a wastewater treatment process with high efficiency and low energy-consumption References | Related Articles | Metrics

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Study on the common boundary of the mainstream & the branch for numerical modeling YANG Sheng-fa , ZHAO Zhi-zhou , YANG Bin 2002, 21(2): 115-118.  Abstract ( )   PDF (144KB) ( )   based on the condition of the branch to the mainstream, the disposal means of the common boundary of mainstream &branch for 1 -D and 2 -D numerical modeling were done .The means obtained the preferable effect example for the flume examination References | Related Articles | Metrics

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The application of fuzzy control for model test in Three Gorges of Yangtze River DING Sheng-qi 2002, 21(2): 119-121.  Abstract ( )   PDF (140KB) ( )   The water level controlling system oven based on Fuzzy-PID and the follow controlling system oven based on Smith-Fuzzy-PID in the Three Gorges model are introduced in this paper .The controlling principle and the operate results are also given .It is proved that the function of control in model test is improved to applied Fuzzy-PID and Smith- Fuzzy-PID control . References | Related Articles | Metrics

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On overtake head-on situation and crossing situation of sailing and action to avoid collision CHEN Zhe 2002, 21(2): 122-125.  Abstract ( )   PDF (137KB) ( )   overtake head-on situation and crossing situation are the three situations of sailing between two vessels .The vessel must take effective measures to avoid collision according to the Rule .We must properly judge the situation between vessels and existing risks of collision during sailing References | Related Articles | Metrics

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On the calculation of self-inductance per Length inside a infinite straight uniform-current-carrying cylindrical wire ZENG Xiao-ying 2002, 21(2): 126-127.  Abstract ( )   PDF (81KB) ( )   Starting from the definition of magnetic flux linkage, five different methods for calculating the self-inductance per length inside a uniform-current-carrying cylindrical wire are discussed and compared References | Related Articles | Metrics