圆形抗滑桩-拱形挡土板支挡体系设计方法  

Design method of circular anti-slide pile-arch retaining plates

作　　者：凌贤长[1,2,3] 卢凡 丛晟亦 朱腾 LING Xianzhang;LU Fan;CONG Shengyi;ZHU Teng(School of Civil Engineering,Harbin Institute of Technology,Harbin 150090,China;Chongqing Research Institute,Harbin Institute of Technology,Chongqing 401135,China;Heilongjiang Research Center for Rail Transit Engineering in Cold Regions,Harbin 150090,China)

机构地区：[1]哈尔滨工业大学土木工程学院,黑龙江哈尔滨150090 [2]哈尔滨工业大学重庆研究院,重庆401135 [3]黑龙江省寒区轨道交通工程技术研究中心,黑龙江哈尔滨150090

出　　处：《河北大学学报(自然科学版)》2025年第2期113-122,共10页Journal of Hebei University(Natural Science Edition)

基　　金：国家重点研发计划课题(2018YFC1505305);国家自然科学基金面上项目(42471149);黑龙江省自然科学基金资助项目(LH2022E072);重庆市自然科学基金资助项目(CSTB2023NSCQ-MSX0109)。

摘　　要：采用适于机械钻孔的圆形抗滑桩代替现行矩形抗滑桩,预制拱形挡土板,提出一种新型拱形板-桩墙支挡体系.在此基础上,根据桩间静力平衡和强度条件,建立圆形抗滑桩-拱形挡土板支挡体系合理桩间距确定方法,以及抗滑桩悬臂段弯矩与剪力计算公式.由抗滑桩间挡土板受力机制,构建考虑土拱效应的挡土板土压力计算方法.依托某高速铁路路堑边坡工程,将建立的设计方法应用于工程实例,并验证设计方法的可靠性.研究结果可为圆形抗滑桩-拱形挡土板支挡体系实际工程应用提供一定参考.A new arched sheet-pile retaining wall was proposed by employing circular anti-slide piles,which are more suitable for mechanical drilling than rectangular piles used in current pile sheet retaining walls,and precast arch retaining plate.On this basis,based on the static equilibrium conditions and strength conditions between the anti-slip piles,and based on the soil arch effect,the method of determining the reasonable pile spacing of the new arched sheet-pile retaining wall support system was proposed.Moreover,the calculating formulae for the bending moment and shear force of the cantilever section of the anti-slip piles were derived.The equation of soil pressure of the retaining plate considering the soil arch effect was established by the force transfer mechanism of the retaining plate between the anti-slip piles.Based on a cutting slope along the high-speed railway in Northeast China,the above established design method was applied to an engineering example and the reliability of the design method was verified by numerical simulation.This study puts forward preliminary reference on the application of arched sheet-pile retaining wall in engineering.

关 键 词：圆形抗滑桩 拱形挡土板 土拱效应 路堑边坡 设计方法 

分 类 号：TU47[建筑科学—结构工程]