基坑预留土堤支护抗力计算及影响因素研究  

STUDY ON THE CALCULATION AND INFLUENCING FACTORS OF RETAINING RESISTANCE OF FOUNDATION PIT EMBANKMENT

作　　者：朱浩延 李育枢 朱宏伟[3] 刘敏 ZHU Hao-yan;LI Yu-shu;ZHU Hong-wei;LIU Min(China Municipal Engineering Southwest Design and Research Institute Co.,Ltd.,610031,Chengdu,China;Chengdu Polytechnic,610031,Chengdu,China;School of Environment and Resources,Southwest University of Science and Technology,621010,Mianyang,Sichuan,China)

机构地区：[1]中国市政工程西南设计研究总院有限公司,成都610031 [2]成都职业技术学院,成都610031 [3]西南科技大学环境与资源学院,四川绵阳621010

出　　处：《建筑技术》2025年第5期561-565,共5页Architecture Technology

基　　金：中国市政工程西南设计研究总院有限公司资助项目:预留土平台作用下基坑围护结构关键技术研究。

摘　　要：通过建立简化计算模型,研究了不同破坏模式下预留土堤支护抗力的计算方法,并对影响预留土堤支护抗力的相关参数进行了分析。结果表明,不稳定土体的破裂角随预留土堤高度、坡度、重度和内摩擦角的增加而减小,而随宽度、粘聚力的增加不断增大;预留土堤的支护抗力随其高度、宽度、重度、粘聚力、内摩擦角的增加不断增大,而随坡度的增加而减小。By establishing a simplified calculation model,the calculation method for the resistance of reserved soil embankment support under different failure modes was studied,and the relevant parameters affecting the resistance of reserved soil embankment support were analyzed.The results show that the fracture angle of unstable soil decreases with the increase of reserved soil embankment height,slope,weight,and internal friction angle,while it continuously increases with the increase of width and cohesion;The support resistance of the reserved soil embankment increases continuously with the increase of height,width,weight,cohesion,and internal friction angle,and decreases with the increase of slope.

关 键 词：基坑 预留土平台 支护抗力 破裂角 

分 类 号：TV551.4[水利工程—水利水电工程]