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上海市标准《地基基础设计规范》DBJ08-11-89第九章第四节和附录七有专门叙述锚定板桩的设计内容,第七节又有垂直土层锚杆的设计规定。规范对锚定板桩的结构布置、内力计算、强度计算、稳定计算以及对垂直土锚的计算等叙述很清楚,规范的“条文说明及背景材料汇编”则有更详细的叙述不赘。本文要讨论的是用斜向“土锚”代替普通拉锚的设计问题。土层锚杆的垂直、水平或斜向设置,在抗拔方面的受力机理相同,所以斜向土层锚杆和垂直土层锚杆都简称“土锚”。土锚结构是一种与岩基中的锚杆相似的
Shanghai Standard “Foundation Design Code” DBJ08-11-89 Chapter IX, Chapter IV and Appendix VII specifically describes the contents of the design of anchored sheet piles, section VII and vertical soil anchor design requirements. The specification clearly states the structural layout, internal force calculation, strength calculation, stability calculation and vertical soil anchor calculation of the anchored sheet pile. The normative “description of the article and the compilation of the background material” . This article is to discuss the design problem of replacing ordinary anchor with diagonal “anchor”. The vertical, horizontal or inclined setting of soil anchor rod is the same in the mechanism of anti-pulling force, so the inclined soil anchor rods and vertical soil anchor rods are referred to simply as “soil anchor”. The earth anchor structure is similar to a rock bolt in a rock foundation