关键词: 预应力锚杆复合土钉墙, 增量法, 内力, 水平位移

Abstract:

Soil nailing wall reinforced pre-stressed anchors (SNWRPA) is a kind of common and effective supporting structure. In order to further study stress and deformation, relationship of soil nail tension and anchor force is analyzed through theoretic analysis and numerical simulation. Improved Increment Method (IIM) is adopted to calculate horizontal displacement of composite soil nailing wall in construction, and several influential factors are considered. Such conclusions are drawn. Firstly, pre-stressed anchors should be set for two layers which can ensure safety and economy considering optimization design. Secondly, soil nail forces nearby will be smaller affected by pre-stressed anchors. Thirdly, in view of effect of soil nail on deformation ,IIM will be simple and reliable used to calculate horizontal displacement .