基于ABAQUS的M型型钢桁架楼板有限元分析  

FINITE ELEMENT ANALYSIS OF M-SECTION STEEL TRUSS FLOOR BASED ON ABAQUS

作　　者：张国伟[1] 乔东需 丁梦婷 孙祚帅 杨超[1] 王清 ZHANG Guowei;QIAO Dongxu;DING Mengting;SUN Zuoshuai;YANG Chao;WANG Qing(Beijing University of Civil Engineering and Architecture,Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material,Beijing 100044,China;Beijing Zhongqing Hengye Technology Development Co.,Ltd.,Beijing 100032,China)

机构地区：[1]北京建筑大学,工程结构与新材料北京市高等学校工程研究中心,北京100044 [2]北京中清恒业科技开发有限公司,北京100032

出　　处：《钢结构（中英文）》2019年第11期60-64,共5页Steel Construction（Chinese & English）

基　　金：北京市属高校基本青年科研业务费项目(X18099)

摘　　要：为研究M型型钢桁架楼板受力性能,设计了试验构件并进行了静力试验。基于试验构件几何尺寸和材性数据建立有限元模型B1,通过试验数据验证了模型正确性,并在该模型基础上改变模型参数,建立模型B2~B9,探究腹板、型钢厚度、等效筋直径、受拉区混凝土厚度和受压区混凝土厚度等因素对楼板受力性能的影响。模拟结果表明:模型B1模拟结果与试验值较为吻合,验证了模型的正确性和建模原则的合理性;模型B1、B3荷载-跨中挠度曲线基本重合,模型等效方法合理有效;型钢腹板对开裂荷载影响较小,对极限承载力影响较大;当楼板空心率和截面高度不变,空腔向板底平移时,楼板开裂荷载降低,峰值荷载提高;减少受压区混凝土高度,会显著降低楼板的受力性能。The team designed specimens and carried out static tests to study the mechanical properties of M-section steel floor.Model B1 was established based on the geometric size of specimen and material data to verify the correctness of the model.On the basis of the model,the model B2-B9 were established by changing model parameters to research the influence of web,steel thickness,equivalent reinforcement diameter,concrete thickness in tension zone,concrete thickness in compression zone and other factors on the mechanical properties of the floor.The simulation results showed that the simulation results of model B1 were consistent with the experimental values,which verified the correctness of the model and the rationality of the modeling principles.The load versus mid-span deflection curve of model B1 basically coincided with that of model B3,which meants that the equivalent method of model was reasonable and effective;the web had little influence on cracking load,but had much influence on ultimate bearing capacity;when the floor hollowness ratio and section hight remained unchanged and the cavity shifted to the floor bottom,the floor cracking load decreased,but the peak load increased.Reducing the height of concrete in compression zone would significantly reduce the mechanical proporties of floor.

关 键 词：M型型钢 有限元模拟 建模原则 等效方法 受力性能 

分 类 号：TU3[建筑科学—结构工程]