抗滑桩上承压力分散型锚杆挡土墙受力及影响因素分析  

Analysis on the Stress and Influencing Factors of Supporting Pressure Dispersed Anchor Retaining Wall of Anti-slide Pile

作　　者：张思峰[1] 张新宇 齐辉 商淑杰 ZHANG Sifeng;ZHANG Xinyu;QI Hui;SHANG Shujie(Shandong Jianzhu University,Ji'nan 250101,China;Qilu Transportation Development Group Co.,Ltd.,Ji'nan 250101,China;Shandong Huajian Engineering Testing Co.,Ltd.,Ji'nan 250101,China)

机构地区：[1]山东建筑大学,济南250101 [2]齐鲁交通发展集团有限公司,济南250101 [3]山东华鉴工程检测有限公司,济南250101

出　　处：《路基工程》2021年第2期39-44,共6页Subgrade Engineering

基　　金：国家自然科学基金项目(51108252);济南市泉城产业领军人才支持计划项目(20190101);齐鲁交通发展集团有限公司科技计划项目(JHLYDKY3)。

摘　　要：通过建立新型联合支挡结构的有限差分数值分析模型,在分析其受力及变形规律的基础上,探讨了填土密实程度、地基土黏聚力、弹性模量、锚定板数量等因素对抗滑桩上承压力分散型锚杆挡墙受力及变形的影响规律。研究结果表明:填土密实程度对联合支挡结构受力和水平位移影响较大;地基土黏聚力越大支护结构位移越小;弹性模量对薄壁挡墙的位移和受力影响较小;增加锚定板数量有利于提高加固效果。Based on the finite-difference numerical analysis model of the new combined retaining structure and the analysis of its stress and deformation law,this paper discusses the influence law of the filling compactness extent,the cohesive force of the foundation soil,the elastic modulus,the number of anchor plates and other factors on the stress and deformation of the supporting pressure dispersed anchor retaining wall of the anti-slide pile.The results show that the compactness extent of filling has a great influence on the force and horizontal displacement of combined retaining structure;the larger the cohesive force of foundation soil is,the smaller the displacement of supporting structure is;the elastic modulus has a little influence on the displacement and stress of thin wall retaining wall;increasing the number of anchor plates is conducive to improving the reinforcement effect.

关 键 词：抗滑桩 压力分散型锚杆 薄壁挡土墙 结构受力 数值模拟 填土密实程度 地基土黏聚力 锚定板数量 

分 类 号：U417.1[交通运输工程—道路与铁道工程]