h型抗滑桩和悬臂式双排抗滑桩的力学特性分析  

Analysis on Mechanical Characteristics of h-Type Anti-Slide Piles and Cantilevered Double-Row Anti-Slide Piles

作　　者：何刚 郑琦七 杨松 李登峰 梅雪峰 李泽洲 HE Gang;ZHENG Qiqi;YANG Song;LI Dengfeng;MEI Xuefeng;LI Zezhou(China MCC5 Group Corp.,Ltd.,Chengdu 610000,China;CCCC Second Harbor Engineering Company Ltd.,Wuhan 430040,China;School of Architectural Engineering,Shandong University of Technology,Zibo 255049,China;The 5th Engineering Ltd.,The 11th Engineering Bureau of China Railway,Chongqing 400037,China)

机构地区：[1]中国五冶集团有限公司,成都610000 [2]中交第二航务工程局有限公司,武汉430040 [3]山东理工大学建筑工程学院,山东淄博255049 [4]中铁十一局集团第五工程有限公司,重庆400037

出　　处：《工业建筑》2024年第5期192-197,共6页Industrial Construction

基　　金：山东省自然科学基金项目(ZR2021QE209)。

摘　　要：为探索h型抗滑桩和双排抗滑桩中较优的抗滑结构形式,利用有限元软件MIDAS/GTS,分别建立了h型抗滑桩和双排抗滑桩的三维有限元分析模型,并对比分析了两种抗滑桩结构的桩身位移、内力分布以及坡体支挡效果。结果表明:1)h型抗滑桩与双排桩抗滑桩在桩身位移、内力均存在显著差异。在协调前、后排桩弯矩、剪力和减小桩身位移方面,h型抗滑桩较双排桩表现更优;2)h型抗滑桩支护后,较双排抗滑桩支护更显著,边坡稳定安全系数提高了21.8%、最大剪应变降低了63.6%;3)理论计算的h型抗滑桩前后排桩内力分布,较双排桩更合理,表明了h型抗滑桩协调内力的优势。To explore a better anti-sliding structure between h-type anti-slide piles and cantilevered doublerow anti-slide piles,the finite element software MIDAS/GTS was used and the three-dimensional finite element analysis models for h-type anti-slide piles and cantilevered double-row anti-slide piles were constructed.Then,the displacement,internal force of piles and slope support effect of the two anti-slide pile structures were compared and analyzed.The results showed that:1)There were significant differences between the two types of anti-slide pile systems in terms of displacement and internal force of piles.Compared with cantilevered double-row anti-slide piles,h-type anti-slide piles were better to coordinate flexural moment and shear force of the front and rear piles,as well as displacement of piles.2)Compared with cantilevered double-row anti-slide piles,the support effect of h-type anti-slide piles was more significant.The safety factor of slope stability increased by 21.8%,simultaneously,the maximum shear strain decreased by 63.6%.3)Compared with the cantilevered double-row anti-slide piles,the theoretical calculations on internal force of the front and rear piles in the h-type anti-slide pile systems were more reasonable.It also showed the advantage of h-type anti-slide piles in coordination of the internal force.

关 键 词：h型抗滑桩 双排抗滑桩 数值模拟 力学特性 理论计算 

分 类 号：P642.22[天文地球—工程地质学] TU473.1[天文地球—地质矿产勘探]