岩土荷载作用下坡体支护结构强度验算强制性规定的分析

Analysis on Mandatory Regulations for Strength Checking Computation of Slope Support Structure under Rock and Soil Load

即将实施的《建筑和市政地基基础通用规范》对岩土荷载作用下坡体支护结构强度验算作出了强制性规定。本文对此进行分析,认为这些规定在支护结构岩土荷载类型、材料强度验算、锚杆和土钉抗拔承载力验算方面均存在问题(共同的问题是没有注意到坡体抗失稳支护结构岩土荷载的特殊性),提出了修改建议。

The soon to be implemented A General Code for Foundations of Buildings and Municipalities has made mandatory provisions for the strength check calculations of slope support structures under geotechnical loads.This paper analyzed these provisions and believed that they have problems in the rock and soil load types of the supporting structure,the check calculation of material strength,and that of the pull-out bearing capacity of anchor rods and soil nails.(The common problem is that the particularity of the rock and soil load of the anti-instability support structure for the slope has not been noticed),with modification measures proposed.