冷弯薄壁型钢-轻骨料混凝土组合梁有限元分析与扩展  

Finite Element Analysis and Extension of Cold-formed Thin-wall Section Steel-lightweight Aggregate Concrete Composite Beams

作　　者：赵根田[1] 梁友腾 

机构地区：[1]内蒙古科技大学建筑与土木工程学院,内蒙古包头014010

出　　处：《施工技术》2017年第8期117-122,共6页Construction Technology

基　　金：内蒙古自然科学基金项目(2016MS0546)

摘　　要：为了验证并研究冷弯薄壁型钢-轻骨料混凝土组合梁的破坏模式,破坏特点和极限承载力,以双肢箱形截面,双肢工字形截面和单肢C形截面在弯剪区的不同弯筋间距的试验为基础,采用有限元软件ANSYS,建立了4组有限元模型,通过与试验数据的对比,两者误差基本在9%以下,说明模拟和试验基本一致。在此基础上对冷弯薄壁型钢-轻骨料混凝土组合梁的受力过程进行了分析,研究了轻骨料混凝土翼缘板有效宽度、厚度、混凝土强度和梁的配钢率对组合梁受力性能的影响。In order to verify the failure mode,failure characteristics and ultimate bearing capacity of the cold-formed thin-wall C-section steel-lightweight aggregate concrete composite beam, based on the experiment of three kinds cross section and different bent bar spacing,the finite element software ANSYS was used to establish four groups of model. Through comparing of simulation with the experimental data,the data error is below 9%. It proves that the simulation and the test have almost the same results. Then the loading procedure of the cold-formed thin-wall C-section steel-lightweight aggregate concrete composite beam was analyzed,and the affection of effective width,thickness and strength grade of concrete of lightweight aggregate concrete flange plate and steel ratio on composite beam behavior were analyzed.

关 键 词：混凝土 组合梁 有限元分析 试验 承载力 

分 类 号：TU398[建筑科学—结构工程]