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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