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15 August 2006, Volume 25 Issue 4 Previous Issue    Next Issue

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Research of rockburst prevention measure in Tongyu highway tunnel XU Lin-sheng 2006, 25(4): 1-3.  Abstract ( )   PDF (228KB) ( )   Rockburst characters of Tongyu highway tunnel are summarized．To start with aspects as improving physical and mechanical properties as well as stress condition of rock，reinforecing wall rock by initial support and second lining supporting，the measures to prevent rockburst are elaborated and have obtained better effects through practice． References | Related Articles | Metrics

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Analyse diseases and design treatment of Damao right tunnel WU Meng-jun，CHENG Chong-guo ZHENG Xue-gui 2006, 25(4): 9-10.  Abstract ( )   PDF (217KB) ( )   Introduce the diseases current status of Damao right tunnel，and analyse the reason of diseases．In base of comparing varied treate project，adopt the project of adding inner lining and waterproofer for treatment． References | Related Articles | Metrics

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Modification of arch ring strength calculation for tube-concrete arch bridge based on defective experhnents YANG Shi-cong，WANG Fu-min，ZHONG Jian-guo，TONG Dai-wei 2006, 25(4): 11-16.  Abstract ( )   PDF (518KB) ( )   A tube-concrete arch bridge in south-west china was removed due to its defects，sample were taken in arch ring and tested in laboratory， and strength distribution was found．In the light defect test findings，the modification of arch ring strength formula for tube-concrete bridge applying analytic theory of tube structure filled with concrete． References | Related Articles | Metrics

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Intersection deterioration analysis of an elevated overpass ZHOU Bing，SHI Shang-wei，BAO Li-xin 2006, 25(4): 17-19.  Abstract ( )   PDF (229KB) ( )   In the paper the B and C line intersection of an elevated overpass on Chao TianMen，BinJiang Road，jiaLing River，Chongqing city had been comprehensively investigated on deterioration in bridge surface，between-pier hollow dabs，expansion joints and bearings of three continuous spans and one simply-supported span，and the reason for the bridge deterioration analyzed．The word could provide useful reference to rehabilitation and improvement of bridges． References | Related Articles | Metrics

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Outline of 《Design Guidbook of Civil Engineering against Debris Flow along Highways》 CHEN Hong-kai，MA Kang，MA Yong-tai，TANG Hong-mei 2006, 25(4): 20-25.  Abstract ( )   PDF (429KB) ( )   Debris flow is main disaster along highway in mountainius rgion．On the basis of research results to debris flow along highway for years，authors of this paper draw up《Design Guidbook of Civll Engineering against Debris Flow along Highways》.The paper presents briefly background and evidences to draw up the guidbook，establishes key techniques of the guibook，and discusses some key problems during using the guidbook，which provide important foundation to revise bearing technique codes about constructing and maintaining of highways． References | Related Articles | Metrics

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Construction guidbook of Civil Engineering against debris flow along highway(I) CHEN Hong-kai，MA Kang，MA Yong-tai，TANG Hong-mei 2006, 25(4): 26-29.  Abstract ( )   PDF (405KB) ( )   Debris flow is main disaster along highway in mountainius region．On the basis of research results to debris flow along highway for years，authors of this paper draw up《Construction Guidbook of Civil Engineering against Debris Flow along Highway》which is matched with 《Design Guidbook of Civil Engineering against Debris Flow along Higllways》．The construction guidbook include nine parts，i．e．general rules，prepamsion before cortstructlon，and construction of high-speed drainage structure，sab-mergecl tunnel，rock screen，protect bank strueture，diversion dam，wing-shaped converge structure，aqueduct and bed-roughened piles． In the paper,items about construction of general rules，preparaslon before construction，and eonstructlon both high-speed drainage strueture and sub-merged tunnel, which can give some important lessonsin construction of strueture to control debris flow along highway，further provide important foundation to revise bearing technique codes about constructing and maintaining of highways． References | Related Articles | Metrics

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Study of unstable rock in Hongyan mountain in Sirnianshan scenic spot HU Ming，CHEN Hong-kai，YI Peng-ying 2006, 25(4): 30-34.  Abstract ( )   PDF (332KB) ( )   In order to see into stability of unstable rock of HongYan mountain．the calculation model for unstable falling rock has been proposed，which based on limit equilibrium theoty and rock nlass structure theory．To some representative unstable rocks．calculated results showed obvious trend of fllrther collapse，which make it very urgent to deal with this potential lmzard．Some synthetic disposing methodes are recommended for controlling unstable rock disasters．Based on falling rock impact force andjumping over hei sht calculations，strength ofthe SNS and dams for rock hold-up engineering alrlount were computed． References | Related Articles | Metrics

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Investigation and analysis of trunk highway disaster characters of Chongqing LI Shu-qing，TANG Bai-ming，MENG Hua，ZHENG Zhi-ming，MANG Qing-zhen，LI Zhi-ying 2006, 25(4): 35-39.  Abstract ( )   PDF (398KB) ( )   Based on the total investigation of the history dieasters of Chongqing trunk highways，the paper makes an analysis of the disaster characteristics including the natural climate．the engineerins geology，the distribution and characters． References | Related Articles | Metrics

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Long-term creep behaviour simulating test and research for red beds soil-rock fillings YAN Qiu-rong，DENG Wei-dong 2006, 25(4): 40-43.  Abstract ( )   PDF (279KB) ( )   Long-term creep behaviour simulating test was used to study two kinds of representative sample of red beds soil-rock fillings．The test has continued for six mouths.The test shows that except rock characteristic，density of soil-rock fillings，overburden and wet-dry circulatlon，fine material content is the major influence factor for long-term creep behaviour of red beds soil-rock fillings． References | Related Articles | Metrics

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Structure analysis of holloww peir in high filling soil HUANG Long-xian，YANC Hu-gen 2006, 25(4): 44-48.  Abstract ( )   PDF (343KB) ( )   For Banpo Bridge in Liang-wang Expressway，the mechanical behaviors of hollw pier under the high filled with soil are analyzed．The soil pressure on the pier is simplified as a trapezoid loads．The computed results indicate that the FEM modle Carl effectively describe the mechanical state of hollow peir． References | Related Articles | Metrics

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Review on the presure grouting technique of bored cast-in-situ pile LONG Qiong，ZHANG Gang 2006, 25(4): 49-52.  Abstract ( )   PDF (311KB) ( )   Based on the pile construction of north cable-tower-pier of Sutong Yangtze river bddge，the new principle of pressure grouting of bored cast-i situ piles is introduced．The comtmction technological process and method a summarized，which is some useful reference for similar construction works． References | Related Articles | Metrics

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Study on applicafion of tubular piles in highway engineering SHEN Jian-liang 2006, 25(4): 53-57.  Abstract ( )   PDF (352KB) ( )   For dealing with weak subgrade of over 20m depth，tubular pile construction is an optional scheme.In this paper，the characteristics of the prestressed concrete tubular piles，the specialty of reinforced’weak subgrade’and both the technological procedure and characteristics of construction will be introduced．The governing factors that should be paid attention in construction will also be analyzed． References | Related Articles | Metrics

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Discuss of methods for natural zoning for highway ZHAO Hui，LIANG Nai-xing 2006, 25(4): 58-61.  Abstract ( )   PDF (298KB) ( )   Now the development of highway is in large scale，specially the developments of the high-grade highway have met lots of problem that have been met never before tied up with the regional environment in special environment．However，the study of natural zoning for highway has obtained few achievements in this period．especially the theories system and the zoning schemes of the natural zoning for highway are 1agged，so the national natural zoning for highway nowadays is difficult to meet the demands of the developments of the highway engineering， combined the reality ofthe highway construction and the achievements have been obtained in our country in near 20 yeats，we should carry llew research to natural zoning for highway from the new theories system and methods． References | Related Articles | Metrics

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Experimental research on fracture toughness of flexible fiber reinforced concrete CHE Cheng-zhi，YI Zhi-jian，HE Xiao-bing，ZHAO Chao-hua 2006, 25(4): 62-64.  Abstract ( )   PDF (218KB) ( )   In this paper，the fracture toughness of flexible fiber reinforced concrete is tested with the method of COD．and calculated at different ratio of flexible fiber Content．The results show that the flexible fracture toughness of fiber reinforced concrete is higher than the normal one. References | Related Articles | Metrics

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Comparison research on fiber reinforced asphalt mix concrete mechanics performance test ZHONG Yu-xia，YU Fang 2006, 25(4): 65-69.  Abstract ( )   PDF (401KB) ( )   This paper systemically investigate the effect on Marshall index offiber percent，fiber type，asphalt percent，fiber shape and other factors by Marshall test and pavement performance，then analyses tile mechanism offiber reinforced asphalt mix concrete，aiming to find out some theories to guide the project and construction on asphalt mix concrete pavement． References | Related Articles | Metrics

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Forward simulation for propagation of GPR electromagnetic wave in layered pavement XIE Hui，CONG Lin，CAI Ying-chun，ZHONG Yan-hui 2006, 25(4): 70-72.  Abstract ( )   PDF (253KB) ( )   in this dissertation，the principle of FEM in EM was discussed，then athree-layered pavement were analyzed with 4-noded isoparametric elements．Then，corresponding FEM programs are compiled in Foman90．So a forward model was built up to describe the transmitting of electromagnetic in the radar and pavements,according to the system identification method.Compared with the methods of finite difference or FFT，the results are more precise and effective，which are more easily applied in projects． References | Related Articles | Metrics

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Review for void detective methods of the concrete pavement HAN Xi，CHEN Shang-jun，ZHONG Li，WANG Qi 2006, 25(4): 73-76.  Abstract ( )   PDF (407KB) ( )   The causes and harm of void in the cement concrete pavement were analyzed in this paper．The work prineipie and application of some the pavement void detective methods such as FWD(Falling weight deflectometer)and GRP(Ground penetrating radar)being widely employed at present were summarized.The neural network technique based on frequency descent rate having advantage in detection the pavement void was discussed．It was also given that remarkable success of transient vibration was used in detection the pavement．The prospect of various methods being used in nondestruetlve deteetlon the pavement was set forth at last． References | Related Articles | Metrics

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Discussion on function and application of laser pavement profile inspection system HUANG Gang 2006, 25(4): 77-82.  Abstract ( )   PDF (399KB) ( )   Latser pavemem profile inspection system is advanced pavement performance inspection system．It posseses sophisticated collect and disposing function about pavement performance index．It can inspect various kinds of data on the diy and wet pavements under different traffic speed and gatherand deal with the pavement performance data accurately and efficiently．The paper not only introduces its components，construct and function but discusses its calibration and application． References | Related Articles | Metrics

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Study on the methods of the entire station meter fast surveying cross-section on the expressway in hilly areas ZHAO Li-jie，FENG Xiao，LIU Yi 2006, 25(4): 83-85.  Abstract ( )   PDF (229KB) ( )   The paper introduces a new method and system of fast digitized surveyingthe cross—section of expressway，bases onthe entire station meter and accepting machine of GPS．It can flexibly gather the data information of expressway surveying and show the graph of the cross-section data． References | Related Articles | Metrics

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Discussion Oil the spreading direction of bituminous mixture ZHANG Yi-luo，LI Ye-gang，LI Pei-cai 2006, 25(4): 86-88.  Abstract ( )   PDF (242KB) ( )   The spreading direction of bituminous has received little attention during pavement construction．This paper analyses movement pattern of granule materials during the spreading of bituminous mixer，explains the relation between spreading direction in construction and traveling direction and discusses the influence of spreading direction on road performance of bituminous surface course．It is suggested that special at tention should be paid to the spreading direction in eoustrueting pavement to improve the quality of bituminous surface． References | Related Articles | Metrics

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Asphalt mixture constituent structure optimization based on fatigue performance ZHU Hong-zhou，HE Zhao-yi，WU Guo-xiong，HUANG Xiao-ming 2006, 25(4): 89-92.  Abstract ( )   PDF (284KB) ( )   To prolong the fatigue life of asphalt pavement，the fatigue performance of asphalt mixtures must be improved by changging the constituent struettu'ed mixture primarily．Inthispaper，the efect of constituent strueture on fatigue performance of asphalt mixture was analyzed． In succe．ssion，for the optimizing target as fatigue performance，the asphalt mixture were optimized combining BP nerve net with Genetic Algorithins．As a result，the relation between 4．75ram passing percent，O．075 real passing percent，filling—bitumen ratio and voids percent and fatigue performance of asphalt mixture，which can be considered in asphalt mixture design based on performances References | Related Articles | Metrics

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The way is designed and optimizes with the grading of ore mixture TU Jian-ping 2006, 25(4): 93-95.  Abstract ( )   PDF (174KB) ( )   To the thing that the No．grades and designs and optimizes with the ore query mixture，Can establish corresponding mathematics model to diferent requests that are designed and optimizing，the treating method will be designed and optimize organic combination，wm regard designing requirement as the condition of restraining，regard optimizing as the goal，designand optimize finishing in the lump．This law Can be used in the grading and is designed of all kinds of ore mixture，the asking of and the relevant model among them also have ripe calculation means or procedure that can be utilized respectively to solve，it is very convenient and suitable． References | Related Articles | Metrics

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It is reasonable to make use of the huge industry slag and to develop the building materials freeing from pollution YE Qiao-ling 2006, 25(4): 96-98.  Abstract ( )   PDF (235KB) ( )   The construction engineering energy are very large in our country，along with mankind the enlargement to develop dint degree to nature，environment problem is too gradually serious，primitive energy are reduce gradually，the construct material should face environmental protection， stanza can direetlon development．this text is cleared to strongly develop the home of green building materials，devdopments ecosystem，and the development csn keep on，and it will become the main current direction about the building ma terials in the twenty-one century References | Related Articles | Metrics

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A kind or factor analysis method to road satety evaluate ZHU Shun-ying，WANG Hong 2006, 25(4): 99-101.  Abstract ( )   PDF (161KB) ( )   To improve precision in road traffic safety macroscopic evaluation，the relativity among the chosen evaluation indexes should be avoid；and to avoid the subjectivity,the impersonal weight as the importance of diferent indexes should be done．The paper discussed that it regarded Conlnlon factor in factor analysis method as replaced indexes and the scored value as the new indexes’values．So the new index weights were calculated according to the explained extent of original evaluation data．Then objective evaluation was done with linear weight method to what we would evaluate．At last，we made a contrast with other methods and studied the application,and discovered different conclusion compared with other methods． References | Related Articles | Metrics

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The appHcafion of artificial neural network in operating speed forecast LI Jian-yuan，GAO Jian-ping 2006, 25(4): 102-105.  Abstract ( )   PDF (236KB) ( )   It has lots of shortage that takes design speed as highway alignment design criteria，and operating speed is closed related witI1 traffic safety．At the same time，highway alignment design is an inter national universal method of highway alignment designinthe current，which has been recognized and valued gradually in china，but related researchis stilltheless．According to the measured data of TAI-JIU freeway operating speed,the papertakes use of Matlab Artificial Neural NetWork to establish the Neural NetWork modal ofthe relationship between operating speed and horizontal aligment elements，use which to make highway alignment design and evaluate the operating speed，and the high forcast precision has been found．So it has the factual value in use． References | Related Articles | Metrics

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Application of fuzzy mathematics in assessment of traffic flow forecasting XIANG Hong-yan，XIAO Sheng-xie 2006, 25(4): 106-108.  Abstract ( )   PDF (222KB) ( )   There are so many influences in traffic flow forecasting．It's a crucial need to assess the prediction mode1．However，previous at tempts to develop assessment model have met limited success．In this paper，an new quantificational method has been proposed by fussy mathematics. it uses fussy transform to make a conclusion．It’s more faster，more exact，more logical，and can be used to judge of two or three prediction models at one time. References | Related Articles | Metrics

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The application of variable weight synthesizing theory in one-way traFfic REN Qi-liang，ZHOU Yu，PENG Qi-yuan 2006, 25(4): 109-112.  Abstract ( )   PDF (241KB) ( )   In this paper，the evaluate index of one-way traffic planning scheme is selected，the index system is built，and in the end eva1uated the 5 schemes of one-way traffic planning with variable weight synthesizing theory． References | Related Articles | Metrics

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he new idea of advancing LOS of PT in urban central area - - A case study of circle light bus in Tianhe area WANG Bo，LI Ju-yun，DENG Xing-dong 2006, 25(4): 113-115.  Abstract ( )   PDF (215KB) ( )   Based on the example of PT improvement in Guangzhou Tianhe district．this article put forward a new idea that setting circle light bus in central area of big city by combining urban land use and road network to advance LOS of PT，wHich can be used for reference． References | Related Articles | Metrics

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The fuzzy comprehensive evaluation by AHP apply in technical criterion parameter of urban rail transit line WANG Yu 2006, 25(4): 116-118.  Abstract ( )   PDF (233KB) ( )   The evaluation on technical criterion parameter is the assumption of plan selection Fuzzy comprehensive evduafion by AHP serve as a too1 provide us a way．This article introduce the basic theory of the me thod and the practical analysis has proven that this method is preferable and feasible． References | Related Articles | Metrics

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Social economic influence evaluation index system of highway project FENG Mei，GONG Yuan-shan 2006, 25(4): 119-121.  Abstract ( )   PDF (238KB) ( )   This paper introduces the concept and characteristics of social economic influence evaluation of highway project，and sets up social economic influence evaluation index system of highway project． References | Related Articles | Metrics

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Application of the information、digital intelligentize and systemize on vehicles LI Jun，LI Zao-heng，ZHANG Shi-yi 2006, 25(4): 122-123.  Abstract ( )   PDF (230KB) ( )   With the development of the Computer and Information Technology，the computer、information intellect network have employed in many of fields.The Society Development and People Life have be without the automobiles.This paper intreduees the applicafion of the computer and electronic control in vehicles and discusses the development-ward．The application of the informative intelligent network vehicles is requirement in the modem informative society and life．It is result of development in information and intelligent society． References | Related Articles | Metrics

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On a discrete model for locating logistics distribution center WEI Guang-xing 2006, 25(4): 124-128.  Abstract ( )   PDF (315KB) ( )   Logistics distribution center is an important part of modem logistics system．And running expense and building expense could be reduced greatly by selecting appropriate address of logistics distribution center．On the basis of analyzing the shortcomings of barycentric method，a discrete locating model is offered in this paper．The model in the paper can be apphed to single distribution centerlocation and multi-distilbution centerlocation，and it takes both variant cost and fix cost into comidemtion．So it is more powerful in practice． References | Related Articles | Metrics

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Study on variation law and long-term forecast method of annual maximum peak discharge at Cuntan station WANG Miao-lin，FU Hua，XUE Xing-jiang 2006, 25(4): 129-132.  Abstract ( )   PDF (256KB) ( )   The variation law of annual maximum peak discharge time series at Cuntan station of the upper reaches of Yangtze River has been prabed，including trends and periods analysis．And the results have shown that there are no trends for annual maxium peak discharge and the major periods are 4a，9a，lla，29a．On the other hand，the long-term forecast of annual raaximlnl flood peak discharge has Men researched with the pard method combined with the stochastic method ．The forecasting result is good：the qualification rate in the calibration period is 84．61％ and in the verification period is 80％ ．So the model can be applied to long-term forecast．The research plays a great role in operating and managing the Three Gorge hydropewer station． References | Related Articles | Metrics

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The model test research on Jinghong port in Lancang rive WU You-ren，ZHOU Jian，WU Song-ren，WANG Duo-yin 2006, 25(4): 133-137.  Abstract ( )   PDF (395KB) ( )   the Ministry of Communication approves Jinghong pert forthe national grade's pert．In fount years，many buildings have been built up in lower reaches of Jinghang pert，however，it make the river regime and the flow form occur great close in short period．It has important political and economic meaning to analyze and research the variation of sedimentation of Jinghong pert and treat it as quickly as possible．According to the field data and the test data，this paper analyses the basic reason OH the variation of sediment accumulation of Jinghong pert，and presents efective treating measures for reference． References | Related Articles | Metrics

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Discussion on water security problem and countermeasure in Minjiang River WANG Miao-lin，GU0 Li-juan，GA0 Pan-yu，FU Hu 2006, 25(4): 138-142.  Abstract ( )   PDF (414KB) ( )   Along with the development of economy and society，water security problem becomes increasingly serious．Especially，the issue of water shortage，water pollution and related eco-environmental degradation has become one of the major emergency problems in China．The water security problem was discussed，including water quantity，water quality and related eco-envimnmental security．As an example，the issue of water security problem in Minjiang River was analyzed：It was found that influenced by human activities and the development of economy and society，the water security and related ceo-envirorunent have been threaten in Minjiang River：a)Water quantity in Minjiang River reduced．It was found that the runof in Minjiang River decreased obviously．The average annual runof from 1970s to 1980s decreased 9．5％ compared with that from 1930s to 1940s．And the ground water resources reduced too：the ground waterlevel descent about 10m．The flood and drought became mole frequent．b)Water poHufion in Minjiang River shrew a tendency to aggravate．The comprehensive water pollution index at Gaoclmng Stafon was O.21 in 1996，but it increased to 0.34 in 2000．And the rank of water quality changed from ”relatively cleaning”into”light pollution.c)Related eeo-envimnment degraded．The forest a ea in the upper reaches of Minjians River reduced and the aridity river va11ey expanded.Waterlossand soil erosion hadthetendencyto aggravate too．Accordingtothe above changes in Minjiang River，some suggestion and countermeasure for protecting the water security and eco-envimnment were proposed：Firstly， the idea of sustainable of the water resouces must be Set up；Secondly，regard the carrying capacity of the water resources as the prerequisite．advance the development of water conservancy and economic cordination；Thirdly，establish the water resources protection area and prevent and control the water pollution. References | Related Articles | Metrics

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Kuilback-1eibler measure applied to blind deconvolution HU Bi-jita 2006, 25(4): 143-145.  Abstract ( )   PDF (206KB) ( )   In the inversiontithe seismic，solving the problem on a blind deconvohfionis pretty dificult．There are various methods to discuss this problem．such as the method ofthe cumulant moments etc．In this pflper，the problem on a blind deeonvolufion in the seismicis discussed by using the functionai method，by which Likas etal studiedthe problem onthe restoration of an image．A statisticalfunction(i．e．the varianction)，the maximum point of which includes the wavelet and the coeficient sequence of the reflections，is obtained by using the Kullback-Liebler information measure，and the algorithm is devised for computing the the maximum value ofthe variational function. References | Related Articles | Metrics

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The matrix of influence measure of weight disturbance an d its analysis DONG Zhi-qing 2006, 25(4): 146-147.  Abstract ( )   PDF (129KB) ( )   Aboutweight Linear regressionmodel，We pmposethe problem of influence measure of weight disturbance，provide the maritx of influence measure of weight disturbance，and utilize trace aud spectral norm，at hst，get sonle results． References | Related Articles | Metrics

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Alternative theorem and benson proper efi ciency for vector optimization problems WANG Qi-1in，LIU Jun，ZHANG Jian 2006, 25(4): 148-150.  Abstract ( )   PDF (166KB) ( )   In this paper，nearly subeonvexlike set-valued maps were introduced and the alternative theorem under its was obtained in locally-onlvex Hamdorf spaces.Finally，a characterization of the benson proper efficiency for vector optimization problems of nearly subconverxlike set-valued maps Was obtained in terms of scalarization． References | Related Articles | Metrics

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Implement secure address resolution over Ethernet ZHU Xing-liang，YE Ren-zhi 2006, 25(4): 151-153.  Abstract ( )   PDF (212KB) ( )   With the erdargement of the Ethemet scale，the threats from inner network have become more and more outstanding．In this paper， both the potential safety hazards ofthe address resolution protocol(ARP)and its would—be threats when used in Ethemet have been markedly analyzed，and also address resolution protocol(SARP)has been introduced here．SARP can realize the safety resolution from IP address to hardware address，thus address information call efectively avoid bt g distorted and replayed by the illegal use who will never carry out dis— guised ARP attacks． References | Related Articles | Metrics

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The automatic recognition of the standard Chinese characters HU Bi-jin 2006, 25(4): 154-157.  Abstract ( )   PDF (261KB) ( )   Inthepaper，the recognition problem on a class of white-black patterns(standard Chinese charaters)is discussed．Using Zemlke-moment invariants features of a pattern。an automatic recognition scheme is designed，and is examined by test software，and so is performabh． References | Related Articles | Metrics