摘要
螺旋土钉具有抗拔能力强、施工方便、工期短和对土体扰动小等优势,在边坡支护中可起到类似普通土钉支护的作用,但是在国内应用和研究很少。先通过试验确定满足螺旋土钉的抗拔承载力要求,然后利用MIDAS GTS/NX模拟多组不同的支护布置方式进行分析,选择适合本工程的布置方案进行施工,并利用MIDAS/GTSNX模拟施工过程,基于坑壁水平位移、地表沉降、基底隆起3方面,将数值模拟结果和现场监测结果进行对比分析,初步得出结论:采用螺旋土钉支护边坡满足本工程的需要,且变形值均满足规范要求。
Screw soil nailing can play similar roles of ordinary soil nailing in slope support,with the advantages of high pull-out ability,convenient construction,short construction period and little disturbance to surround soil. In this paper,the pull-out ability of screw soil nailing is determined by experiments. Serial support arrangements are analyzed by MIDAS/GTSNX,and the suitable layout of the project is selected. Horizontal displacement,surface settlement and bottom uplift are studied in numerical simulation. The results are compared with filed data,indicating that screw soil nailing support meets the needs of the project and its deformations meet standard requirements.
出处
《施工技术》
CAS
北大核心
2017年第S2期225-230,共6页
Construction Technology
基金
河南省交通运输厅科研项目(2015Y08)
