作　　者： ; ; ;

机构地区： 同济大学土木工程学院地下建筑与工程系

出　　处： 《地下空间与工程学报》 2008年第1期170-174,180,共6页

摘　　要： 基于三维有限元,从管线的位移场入手,首次进行相邻深基坑开挖对周围地下管线影响的研究,探讨了基坑被动区加固、管线侧向加固和管线底部加固三种保护管线的方式,分析了三种保护措施下管线的水平、竖向位移的变化,讨论了三种加固方式对管线位移的控制效果,并比较三种加固方式的优缺点,研究表明基坑被动区加固是一种较为合理的管线保护措施。研究成果为设计、施工提供了一定的依据和参考价值。 Starting with the analysis of the displacement field of buried pipeline around the two foundation pits, the protection measures of buried pipeline during excavation of two adjacent foundation pits are innovatively studied based on 3D FEM in this paper. Three methods used for the protection of buried pipeline, including the soil improvement of passive field, side area of pipeline and the bottom of the pipeline, are discussed. The efficiency and effectiveness of the methods are analyzed along with comparison of the advantages and shortcomings of these three methods. The study demonstrates that the method of the soil treatment in passive field is a relatively cheap and reasonable protection measure compared with other methods and some valuable conclusions for construction practice are also drawn from the simulation.

关 键 词： 相邻深基坑 地下管线 保护 三维有限元 分析

领　　域： [建筑科学] [建筑科学]