素填土抗剪强度参数取值问题的探讨

Discussion on the Value of the Shear Strength Parameters of Plain Soil Filling

素填土由于其成分复杂和回填时间差异较大,通常情况下,岩土工程勘察报告中提供的抗剪强度参数普遍偏低,造成基坑或边坡支护工程设计方案偏于保守。论文以威海某工程为例,分析了影响素填土抗剪强度的主要因素,提出取得其抗剪强度参数的3种方法,其中,根据现场工况及相关工程经验进行反演分析,是一种便捷快速的方法。

Due to the complex composition and the large different backfill time of plain filling,usually,the shear strength parameters provided in the geotechnical survey report are generally low,and the design scheme of foundation pit or slope support engineering is more conservative.Taking a project in Weihai as an example,this paper analyzes the main factors affecting the shear strength of plain soil filling,and proposes three methods to obtain its shear strength parameters.Retrospective analysis based on the site working conditions and related engineering experience is a convenient and fast method.