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《Chinese Journal of Underground Space and Engineering》 2009-S1
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Numerical Simulation and Its Application to Prestressed Anchor Based on the Fast Lagrangian Analysis Method

ZHENG Wei-feng1,2,JIA Jin-qing2(1.Engineering Mechanics Research Department,China Electric Power Research Institute,Beijing 100055,China;2.School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian 116024,China;)  
The evaluation of the ultimate tensile capacity is one of the most important factors for prestressed anchor in deep foundation pit.Based on the Fast Lagrangian Analysis Method,the reinforcement mechanism of single prestressed anchor is simulated,and the influencing parameters to ultimate tensile capacity are analyzed.With the increase of the grouting pressure and the bonded section length,the ultimate tensile capacity is increased,but the capacity is nonlinearly increased with the bonded section length.An instance of prestressed anchor pull-resisting test in field on different rocks is analyzed and the numerical simulation fits well with the test result.The conclusions can be referenced for choosing computing parameters in the numerical simulation of prestressed anchor and prestressed anchor design in deep foundation pit.
【CateGory Index】: TU476
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