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论文类型：期刊论文

发表时间：2013-09-01

发表刊物：RESEARCH JOURNAL OF CHEMISTRY AND ENVIRONMENT

收录刊物：SCIE

卷号：17

期号：,1

页面范围：180-186

ISSN号：0972-0626

关键字：environment effect; displacement; vertical stress; COMSOL; thermo-hydro-mechanical (THM)

摘要：Environment effect (such as, strain and stress of pile, displacement of pile and surrounding soil) of energy pile will be happened under heat exchange. How much bearing capacity and displacement of energy pile influenced by heat exchange is one of most important problems must be solved in energy pile application. Base on field test data, one thermo-hydro-mechanical (THM) model was built by using COMSOL software. The vertical strain, vertical stress, and displacement of pile top were comparative discussed and analyzed. The correctness of this thermo-hydro- mechanical numerical model is verified by field test results and pervious numerical model. The results show that the strain and stress of pile were mainly happened on the bottom of pile; on this field site, the maximum values of vertical, strain and vertical stress was happened on 15-20 m pile depth, the maximum vertical displacement was happened when temperature equals 21 degrees C.