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本文以礼睦路改扩建工程为依托;从软土的固结沉降的原理和力学分析出发,结合本项目填土底、工程造价限制、地下水位底及周边用地限制等实际情况,提出了采用换填泡沫轻质土的软土路基处理方案,并对方案的沉降进行了理论计算。计算结果表明:当填土高度不超过1.0m时,换填泡沫轻质土厚度在满足H≥0.9+1.1D(路面结构厚度)的条件下,其工后残余沉降均小于0.1m,能满足规范要求。
Based on the principle and mechanics analysis of consolidation and settlement of soft soil, combined with the practical conditions such as fill bottom, project cost limit, groundwater bottom and surrounding land constraints, Soft soil subgrade replacement with foam light soil was carried out and the settlement of the scheme was theoretically calculated. The calculation results show that when the filling height does not exceed 1.0m, the residual foam settlement of the light weight of the foam-filled foam under the conditions of H≥0.9 + 1.1D (the thickness of pavement structure) is less than 0.1m, requirements.