新型锚管构架在边坡加固中的应用.pdfVIP

工程地质学报 1004—9665／2008／16(3)-0371-05 新型锚管构架在边坡加固中的应用 孙书伟①② 朱本珍② 郑 波① 张军伟① (①铁道科学研究院 北京 100081) (②中铁西北科学研究院 兰州 730000) 摘 要 针对边坡病害治理工程往往存在工期紧、施工场地受限等特点，研究了一种用于边坡加固的新型结构，即锚管构架。 介绍了锚管构架的组成和特点，基于Winkler理论，建立了锚管构架的力学计算模型，并编制了弹性杆系有限元计算程序。将 锚管构架应用于西气东输管道沿线某填土边坡的病害治理中，结果表明，按照Winkler理论建立的计算模型较好的反映了锚 管构架实际的受力和变形形态，输气管道的安全运营得到了保障。 关键词 边坡工程 微型桩 边坡病害 锚管构架 计算模式 杆系有限元 西气东输 中图分类号：TD824．7 2 文献标识码：A APPLICATIoN oF FRAMEWoRK oF CABLE AND TUBE RE FoRECE． MENT To SLoPE STABⅡ IZATIoN SUN Shuwei①② ZHU Benzhen② ZHENG Bo① ZHANG Junwei~ (03China Academy ofRailway Sciences，Beijing 100081) ((~Northwest Research t e Co．，Ltd．of C．R．E．C，Lanzhou 730000) Abstract This paper presents a new method to address some problems in slope hazard control projects just as ur- gent construction period，limited construction location and SO on．The new method is a new style of reinforcement structure that is named framework of cable and tube reinforcement．The paper describes composition and feature of framework of cable and tube reinforcement，also analyzes the adaptability of it on the type of slope hazard．Accord- ing to the computation principle and method of Winkler beam on elastic foundation，an analytic model of framework of cable and tube reinforcement is proposed．A computing program of elastic bar system FEM has been written．The structure is used to the treatment of a backfill slope hazard along west—east gas transmission pipeline．The results show that the model can agree well with practical stress and deformation of framework of cable and tube reinforce- ment．Certainly safe operation of gas transmission pipeline is ensured． Key words Slope engineering；mieropile，Slope hazard，Framework of cable and tube reinforcement，Analytic model，Bar system FEM，West east gas transmission +收稿日期：2007—12—13；收到修改稿日期：2008—03—18． 第一作者简介：孙书伟，主要从事边坡稳定性分析和支档结构设计方面的研究．Email：sswl216@163．coln 372 Journa／ofEn