水泥聚苯模壳格构式混凝土墙体尺寸效应数值模拟  

Numerical simulation on size effect of expansive polystyrene granule cement form latticed concrete walls

作　　者：杨璐 陈虹 刘洋 YANG Lu;CHEN Hong;LIU Yang(School of Architectural and Civil Engineering,Shenyang University of Technology,Shenyang 110870,China;Large Casting Branch Company,Shenyang Foundry and Forging Industry Co.Ltd.,Shenyang 110142,China)

机构地区：[1]沈阳工业大学建筑与土木工程学院,沈阳110870 [2]沈阳铸锻工业有限公司大型铸件分公司,沈阳110142

出　　处：《沈阳工业大学学报》2018年第5期582-587,共6页Journal of Shenyang University of Technology

基　　金：国家自然科学基金资助项目(11102118)

摘　　要：为了研究水泥聚苯模壳混凝土墙体的抗震性能,采用ABAQUS有限元分析软件建立墙体的有限元分析模型.基于不同高宽比及格构柱布置方式,研究了低周往复荷载作用下墙体的荷载-位移关系曲线、破坏形态、刚度退化以及延性等力学性能指标.结果表明:该新型格构式墙体的极限荷载随着高宽比增大而减小;格构柱数量越多,该墙体的抗震能力越强;在往复荷载作用下,GW-1、GW-2墙体呈弯曲破坏形态,GW-3墙体呈弯剪破坏形态,GW-4墙体呈剪切破坏形态;该格构式墙体的刚度退化现象从开裂状态到极限状态变化较大;当该新型墙体的高宽比大于1时,墙体的格构柱数量越多,高宽比越小,该墙体抵抗外界变形能力就越强.In order to study the seismic performance of expansive polystyrene granule cement form latticed concrete walls,the finite element analysis model for the walls was established with the ABAQUS finite element analysis software.Based on the different height-width ratio and the arrangement mode of latticed columns,such mechanical property indexes as the load-displacement curve,failure morphology,stiffness degradation and ductility of the walls under the low reciprocating loading were studied.The results show that the ultimate load of new latticed walls decreases with increasing the height-width ratio.The more the number of latticed columns is,the stronger the seismic performance of the walls is.Under the action of reciprocating loading,the GW-1 and GW-2 walls show the bending failure morphology,the GW-3 wall shows the bending and shearing failure morphology,and the GW-4 wall shows the shearing failure morphology.The stiffness degradation phenomenon of the latticed wall changes obviously from the cracking to ultimate states.When the height-width ratio of new walls is greater than 1,the number of latticed columns of the walls is the most.The smaller the height-width ratio is,the stronger the anti-deformation capability of the walls is.

关 键 词：水泥聚苯模壳 格构式 混凝土墙体 破坏形态 抗震性能 荷载位移曲线 刚度退化 延性 

分 类 号：TU398[建筑科学—结构工程]