国外加筋垫层桩支承路基计算方法分析  

Analysis of Calculation Method for Foreign Geosynthetic Reinforced Pile Supported Embankments

作　　者：周镜[1] 叶阳升[1] 蔡德钩[1] 

机构地区：[1]铁道科学研究院铁道建筑研究所,北京100081

出　　处：《中国铁道科学》2007年第2期1-6,共6页China Railway Science

基　　金：铁道部科技研究开发计划项目(2006G013)

摘　　要：从荷载传递与分配、加筋垫层格栅的张拉力和路堤横向滑移3个方面介绍英国、日本、德国和北欧规程(手册)中有关加筋垫层桩支承路基的计算方法。分别采用这些计算方法对两个算例的加筋垫层格栅张拉力进行计算,发现计算结果相差较大。不同方法计算结果产生差异的原因是,各规范对拱效应、作用于桩间垫层上的荷载、垫层加筋体张拉力等的计算方法差异较大。建议结合我国铁路建设工程实际,对现有方法中存在的问题进行系统和有计划的研究,建立我国自己的加筋垫层桩支承路基的设计理论和方法。The calculation methods of geosynthetic reinforced pile supported embankments are introduced in this paper from such three aspects as load transfer and distribution, reinforced geosynthetic tension and slope transverse slide. The different codes （handbook） of British, Japan, German and Northern Europe are adopted to calculate the reinforced geosynthetic tension respectively. The computation results applying codes indicate that the deviation of results is biggish because of the difference of hypothesis about arch effect, calculation of load between pile reinforced bedding and reinforced geosynthetic tension and so on. The problems of existing methods should be investigated systematically according to engineering cases. A reasonable design thesis and correlative calculation method suitable for our country are strongly required.

关 键 词：地基处理 桩支承路基 加筋垫层 拱效应 格栅张拉力 

分 类 号：U213.15[交通运输工程—道路与铁道工程]