沟谷斜坡段填方对建筑工程地基基础的影响研究

Study on Influence of Filling of Gully Slope Section on Construction Engineering Foundation

以西南地区沟谷区域的某建筑工程项目为例,根据斜坡段新填土的几何学特征和运动学特征并结合现场施工条件,采用理论分析和数值模拟相结合的方法,研究了沟谷区域斜坡段填方对建筑工程基础的不利影响,计算分析土体和建筑基础结构位移、剪切应变分布规律。结果表明:新填土的参数不断减弱以及结构上方面荷载的增加都将导致填方后该工程区域土体和桩基位移、沉降、剪应变均有所增加;同时,针对斜坡段填方对建筑工程基础主要不利影响的表现形式,提出了填土体注浆加固、加强桩基等一些相应预防或处理措施。

This paper mainly takes a construction project located in the valley area of southwestern region as an example, according to the geometric and kinematic characteristics of the new fill of the slope section combined with the on-site construction conditions. The combination of theoretical analysis and unmerical simulation was used to study the adverse effects of the filling of the slope section of the valley on the construction engineering foundation. Calculate and analyze the displacement and shear strain distribution of soil and building infrastructure. According to the calculation results, the gradual weakening of the parameters of the new fill and the increase of the structural load will lead to an increase in the displacement, settlement and shear strain of the soil and pile foundation in the project area after the filling. In view of the manifestation of the main adverse effects of the slope section on the foundation of the construction project, some corresponding prevention or treatment measures such as grouting reinforcement and strengthening pile foundation are proposed, accumulated relevant experience for similar construction projects.