富水砂层顶管施工模型试验分析

Model Test Study of Pipe Jacking Construction in Water-Rich Sand Layer

以海口市美兰机场二期扩建场外排水工程顶管施工为工程背景,根据相似原理选取现场土体做为模型试验围岩土、其他模型材料模拟实际施工现场制作模型试验箱,布设位移计和土压力盒,根据现场监测结果与模型试验进行对比,分析顶管施工时对围岩土体的扰动和管道的附加应力.结果表明:模型试验与现场监测数据变化规律基本一致,试验数据的结果是正确可靠的.为以后类似工程提供借鉴意义.

Based on phase II expansion of Haikou Meilan Airport outside the engineering background of drainage pipe jacking construction,according to the principle of similarity in the scene as a model test of soil surrounding rock soil and other materials simulation actual construction site,the model test chamber,setting displacement and earth pressure box,according to the field monitoring results compared with model test,The disturbance to surrounding rock soil and the additional stress of pipeline during pipe jacking construction are analyzed.The results show that the model test is consistent with the field monitoring data,and the results of the test data are correct and reliable.It provides reference for similar projects in the future.