土体含水率对顶管工后土体变形影响规律研究

Research on Influence of Soil Moisture content on SoilDeformation after Pipe Jacking Construction

该文以广东省惠州市金山新城水环境综合整治项目703地质大队段顶管施工项目为背景,通过运用Peck地表沉降经验理论公式,求得管道周围土体在不同含水率情况下的地表沉降量;利用有限元分析软件Abaqus对顶管施工后周围土体的变形情况进行了研究,分析在土体含水率不同的条件下地表沉降量的变化情况。研究结果表明,理论计算结果与现场监测值比较接近,具有一定的准确性和适用性,能够为工程预测提供参考。

This article takes the 703 Geological Brigade section pipe jacking construction project of Jinshan New City Water Environment Comprehensive Improvement Project in Huizhou City,Guangdong Province as the background.By using Peck's empirical theoretical formula for surface settlement,the surface settlement amount of the soil around the pipeline under different water content conditions is obtained;The finite element analysis software Abaqus is used to study the deformation of the surrounding soil after pipe jacking construction,and to analyze the changes in surface settlement under different soil moisture content conditions.The research results indicate that the theoretical calculation results are relatively close to the onsite monitoring values,with certain accuracy and applicability,and can provide reference for engineering prediction.