桁架式钢骨混凝土梁抗弯极限承载力计算分析  

Calculation on ultimate flexural bearing capacity of the reinforced concrete beam with steel truss

作　　者：赵文霞[1] 邓志恒[2] ZHAO Wen-xia DENG Zhi-heng(Experimental Center, Dalian Institute of Science and Technology, Dalian 116052, China College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China)

机构地区：[1]大连科技学院实验中心,辽宁大连116052 [2]广西大学土木建筑工程学院,广西南宁530004

出　　处：《陕西理工学院学报（自然科学版）》2016年第5期43-51,共9页Journal of Shananxi University of Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(51268005)

摘　　要：利用有限元分析软件ABAQUS对桁架式钢骨混凝土梁进行受力分析,并将模拟结果与试验数据对比,二者吻合度良好,表明本文有限元分析的可行性。通过改变斜腹杆面积探讨斜腹杆对其抗弯极限承载力的影响,分析结构表明:随着斜腹杆面积的增加,构件抗弯极限承载力逐渐增大。根据模拟结果推导出考虑斜腹杆作用的桁架式钢骨混凝土梁抗弯极限承载力的计算公式。将修正后的计算结果与试验结果进行对比,表明计算精度进一步提高。Based on the force analysis of the reinforced concrete beam with steel truss by ABAQUS,and compared with the experiment results,the simulation matches well with experiments,which proves the feasibility of the finite element analysis. Some changes are made about the area of the oblique abdominal rod to discuss the influence on ultimate bearing capacity. It shows that the ultimate bearing capacity is increased gradually with the increase of the oblique abdominal rod.. Through the simulation results,the formula of ultimate flexural bearing capacity of the reinforced concrete beam with steel truss are derived when the oblique abdominal rod is considered. The revised calculation results are compared with experiment results,and it shows that calculation precision is greatly improved.

关 键 词：桁架式钢骨混凝土梁 有限元分析 斜腹杆 抗弯极限承载力计算 

分 类 号：TU398[建筑科学—结构工程]