建筑模网混凝土墙体抗震试验研究与有限元分析  

EXPERIMENTAL RESEARCH AND FINITE ELEMENT ANALYSIS ON SEISMIC BEHAVIOR OF CONCRETE WALLS WITH CONSTRUCTION FORMWORK

作　　者：任铮钺[1] 王立久[1] 孙治国[2] 

机构地区：[1]大连理工大学土木工程学院,辽宁大连116024 [2]大连海事大学道路与桥梁工程研究所,辽宁大连116026

出　　处：《工程力学》2012年第12期147-155,共9页Engineering Mechanics

基　　金：“十一五”国家科技支撑计划项目(2006BAJ04A04)

摘　　要：为研究建筑模网混凝土这种新型免模板组合结构体系的抗震性能,该文首先进行了6个模网混凝土矮墙体和3个模网混凝土高墙体试件的抗震拟静力试验,研究了这种新型墙体的破坏过程和破坏形态、滞回特性、承载力和变形能力等。在此基础上建立了模网混凝土墙体的非线性有限元模型,并进行了墙体受力全过程的模拟分析。研究表明:模网混凝土墙体的破坏过程与普通混凝土墙体基本相似,6个矮墙体试件均发生剪切破坏,而3个高墙体试件则分别发生弯曲破坏和纵筋粘结破坏。模网混凝土矮墙表现出较好的抗剪能力,但变形能力略低于普通钢筋混凝土墙体,发生弯曲破坏的高墙体试件表现出较好的变形能力,而含有纵筋搭接的试件变形能力偏低。所建立的有限元模型可较好的模拟试件至中度破坏阶段的滞回曲线、破坏过程和破坏形态。6 squat concrete walls and 3 tall concrete walls with construction formwork were tested under simulated seismic loading to investigate the seismic behavior of a new formwork-free composite structure. The damage process and failure mode, the hysteretic characteristic, load carrying capacity and ductility of the walls were studied. A finite element model is proposed for simulating the whole process of nonlinear behaviors of the walls. It is found that the failure process of the concrete walls with construction formwork is similar with that of common concrete walls. All the squat walls are damaged with shear failure modes, while the tall walls are damaged with flexural or bond failure modes. The squat walls with construction formwork have sufficient shear load carrying capacity but their ductility capacity is slightly lower compared to common concrete walls. The tall wall with a flexural failure mode has good ductility capacity while the specimen with a bond failure mode shows poor ductility capacity. The simulated hysteretic behavior, the damage process and failure mode of the specimens are agreed well with experimental results of the walls from their elastic to moderate damage stages.

关 键 词：模网混凝土 新型墙体 抗震性能 有限元分析 ANSYS 

分 类 号：TU528.57[建筑科学—建筑技术科学]