方薇,张万东兴,王亮亮,王艺伟,刘恬

• 1:长沙理工大学交通运输工程学院
• 2:马克菲尔(长沙)新型支挡科技开发有限公司
• 3:中国矿业大学力学与土木工程学院

摘要(Abstract)：

针对水平柔性拉筋和重力墙组合成的一体式加筋重力墙开展了基于直线滑动模式的墙背主动土压力上限分析，研究了加筋式重力墙这一新型支护结构的工作特性。结果表明：构建的模型可综合考虑非水平填土面、非竖直墙背、粗糙墙-土界面、土表荷载等复杂因素的影响；临界破裂角与墙背倾角、填土内摩擦角、筋材极限拉力呈正相关，而与填土倾角、外摩擦角、土表荷载、筋材布置间距呈负相关。主动土压力大小与墙背倾角、填土倾角、填土重度、土表荷载、筋材竖向布置间距呈正相关，与填土内摩擦角、外摩擦角、筋材极限拉力呈负相关；加筋重力墙中筋材的存在使主动极限平衡状态下的滑裂角增大，进而大幅降低了主动土压力。综合考虑效费比与施工因素，筋材竖向布置间距宜取0.4～0.6 m。

关键词(KeyWords)： 加筋式重力墙;主动土压力;上限分析;临界破裂角

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(编号：51408059,52178413);; 湖南省自然科学基金项目(编号：2022JJ30593);; 中国博士后基金项目（编号：2016M591957）

作者(Author): 方薇,张万东兴,王亮亮,王艺伟,刘恬

DOI: 10.14188/j.1671-8844.2022.0408

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