基于ABAQUS对抗滑挡墙结构的优化设计研究  

On Optimization Design of Anti-sliding Retaining Wall Structure Based on ABAQUS

作　　者：舒天白 任伟中[2] 符贵军 高开丰 张基鹏 SHU Tianbai;REN Weizhong;FU Guijun;GAO Kaifeng;ZHANG Jipeng(School of Civil Engineering,Shaoxing University,Shaoxing,Zhejiang 312000;Wuhan Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,Hubei 430071)

机构地区：[1]绍兴文理学院土木工程学院,浙江绍兴312000 [2]中国科学院武汉岩土力学研究所,湖北武汉430071

出　　处：《绍兴文理学院学报》2021年第8期23-33,共11页Journal of Shaoxing University

基　　金：湖北省科技厅项目“湖北省国省干线公路地质灾害发育规律及防治技术研究”.

摘　　要：鉴于对抗滑桩挡土墙组合结构的研究偏少,本文基于有限元强度折减法,运用ABAQUS数值模拟软件针对抗滑挡墙结构建立三维边坡模型.分别探讨了抗滑桩的桩径b、挡墙内桩长h、设桩位置α以及抗滑桩的不同选材等参数变量对挡墙位移ν和边坡安全系数的影响.研究结论表明:对于直角梯形挡墙,当设桩位置在距挡墙直角边1/6~1/3底边长时,边坡安全系数最高,稳定性最好;当模型中边坡与挡墙宽2 m时桩径b设置为0.4 m可保证在造价控制较小的情况下获得较为可观的加固效果;挡墙内桩长的改变同样会影响边坡的稳定性,当挡墙内桩长在1/2~7/10总桩长时,边坡的安全系数最高;当桩身的混凝土标号增大时,挡墙顶部位移逐渐变小,边坡的安全系数也随之增大,同时安全系数较为接近,当选用混凝土桩时优先选用C25型,整体上来看,钢轨桩在抗滑挡墙结构中对边坡的抗滑效果要明显优于混凝土桩.In view of the lack of research on the composite structure of anti-slide pile retaining wall,this paper used the ABAQUS numerical simulation software to build a three-dimensional slope model for the anti-slide retaining wall structure based on the finite element strength reduction method.The influence of parameter variables such as the diameter of anti-slide pile b,the length of pile in retaining wall h,the location of pileαand the different material selection of anti-slide pile on the displacement of retaining wall and the safety factor of slope were discussed.The results show that for the right angle trapezoid retaining wall,when the pile location is 1/6~1/3 of the bottom length from the right angle side of the retaining wall,the safety factor of the slope is the highest,with the best stability;when the slope and the retaining wall are 2m wide,the pile diameter b is set to 0.4m to ensure that the considerable reinforcement effect can be obtained under the condition of small cost control;the change of pile length in the retaining wall will also affect the stability of the slope.When the pile length in the retaining wall is 1/2~7/10 of the total pile length,the safety factor of the slope is the highest;when the concrete mark of the pile body increases,the displacement of the top of the retaining wall gradually decreases,with an increased safety factor of the slope and a relatively close safety factor.When the concrete pile is selected,C25 type is preferred.On the whole,the anti-sliding effect of the steel rail pile on the slope in the anti-sliding retaining wall structure is obviously better than that of the concrete pile.

关 键 词：抗滑挡墙 强度折减 位移 稳定性 优化设计 

分 类 号：TU457[建筑科学—岩土工程]