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Date of Publication:2017-01-01

Journal:水利与建筑工程学报

Volume:15

Issue:4

Page Number:122-125,177

ISSN No.:1672-1144

Abstract:The foundation restraint stress analysis is an important basis for determining the temperature control measures of mass concrete.In the previous finite element calculation,it is assumed that the bedrock is homogeneous,but the actual bedrock is cut by various structural planes.We adopted APDL and UPFS provided by ANSYS software to build equations of elastic creep,the mass concrete creep stress calculation which was solved by finite element method,and through specific examples verify the correctness of the program.Based on the above analysis,the influence of the heterogeneity of rock mass on the restraint stress of mass concrete was analyzed.The calculation results show that compared with the uniform calculation considering the heterogeneity of rock,concrete foundation restraint area maximum tensile stress increases,stricter temperature control measures should be taken to avoid cracking of concrete,providing some guidance for mass concrete temperature control.

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