混凝土多孔砖砌体温度应力有限元分析
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(1 长沙理工大学,长沙 410076; 2 永州市建设工程质量安全监督站,永州 425000)[摘要]针对影响混凝土多孔砖砌体结构的温度裂缝问题进行了探讨,对混凝土多孔砖砌体结构在温度荷载作用下的变形规律及应力分布规律进行了有限元分析。针对影响混凝土多孔砖砌体结构温度裂缝的几种重要因素,建立不同的有限元模型进行了非线性分析,并给出了控制及预防混凝土多孔砖砌体结构温度裂缝的若干措施。[关键词]混凝土多孔砖;砌体结构;有限元分析;温度裂缝;温度应力Finite element analysis of the temperature stress of concrete perforated masonryYang Weijun1,Zheng Qunsheng2,Zhang Haidian1,Yang Chunxia2(1 Changsha University of Science and Technology,Changsha 410076,China; 2Yongzhou Construction Quality and Safety of Monitoring Station, Yongzhou 425000, China)Abstract:Temperature cracks and some cracking mechanisms of concrete perforated brick masonry are discussed. Finite element analysis is done for overall structure under temperature load in order to research the rules of deformation and stress distribution under temperature difference.According different influence factors, some different finite element analysis models are established and different influence factors of temperature cracks are analyzed.Based on finite element analysis and references, some effective measures to prevent and control cracks on concrete perforated brick masonry buildings are put forward.Keywords:concrete perforated brick; masonry structure; finite element analysis; temperature crack; temperature stress作者简介:杨伟军,博士,博士后,教授,Email:mgbyrh@163.com。参考文献[1]施楚贤.砌体结构理论与设计(第二版)[M].北京:中国建筑工业出版社,2003.[2]GB50003—2001砌体结构设计规范[S]. 北京: 中国建筑工业出版社,2001.[3]叶甲淳,金伟良,邹道勤,等.有限元计算砌体结构温度效应时的参数取值[J].建筑结构,2003,33(4).[4]叶甲淳.混凝土小型空心砌块建筑裂缝控制的温度效应研究[D].浙江:浙江大学,2003.[5]BEMARDINI A,CASELLATO A,MODENA C,et al.Post elastic behavior of plain masonry shear walls[C]∥Proceedings of the 7th IBMAC, Melboume,1985: 45-47.