Cracking Propagation of Hardening Concrete Based on the Extended Finite Element Method  

作　　者：朱振泱 CHEN Weimin ZHANG Guoxin 

机构地区：[1]China Institute of Water Resources and Hydropower Research, Beifing 100038, China [2]Hydrochina Huadong Engineering Corporation, Hangzhou 310014, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2017年第5期1132-1139,共8页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(Nos.51409264,51509020,51209219);Zhejiang Provincial Natural Science Foundation(No.LQ15E090003)

摘　　要：Self-deformation cracking is the cracking caused by thermal deformation, autogenous volume deformation or shrinkage deformation. In this paper, an extended finite element calculation method was deduced for concrete crack propagation under a constant hydration and hardening condition during the construction period, and a corresponding programming code was developed. The experimental investigation shows that initial crack propagation caused by self-deformation loads can be analyzed by this program. This improved algorithm was a preliminary application of the XFEM to the problem of the concrete self-deformation cracking during the hydration and hardening period. However, room for improvement exists for this algorithm in terms of matching calculation programs with mass concrete temperature fields containing cooling pipes and the influence of creep or damage on crack propagation.Self-deformation cracking is the cracking caused by thermal deformation, autogenous volume deformation or shrinkage deformation. In this paper, an extended finite element calculation method was deduced for concrete crack propagation under a constant hydration and hardening condition during the construction period, and a corresponding programming code was developed. The experimental investigation shows that initial crack propagation caused by self-deformation loads can be analyzed by this program. This improved algorithm was a preliminary application of the XFEM to the problem of the concrete self-deformation cracking during the hydration and hardening period. However, room for improvement exists for this algorithm in terms of matching calculation programs with mass concrete temperature fields containing cooling pipes and the influence of creep or damage on crack propagation.

关 键 词：concrete crack self-deformation loads extended finite element method 

分 类 号：TU528[建筑科学—建筑技术科学]