钢筋混凝土柱—钢梁组合框架结构节点抗剪承载力研究

发布时间：2018-01-06 04:41

本文关键词：钢筋混凝土柱—钢梁组合框架结构节点抗剪承载力研究　出处：《西安建筑科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：钢筋混凝土柱-钢梁组合框架结构（RCS组合结构）是一种能够充分发挥钢材和混凝土材料在各自结构和经济上优势的新型结构体系。但因为RCS组合框架结构节点区构造和传力的复杂性，使得其抗剪承载力计算公式并没有一个统一的标准，所以本文对RCS组合节点的抗剪承载力展开了研究。对RCS组合节点的典型构造进行了介绍，分析了节点区中较常用到的构造措施，例如面承板、箍筋、钢环箍和钢柱面板等对节点受力性能的影响。对腹板剪切破坏模型、混凝土承压破坏模型进行了总结分析，并基于试验资料提出了部分剪切破坏和梁-节点混合破坏两种破坏模型。在节点破坏模型的基础上分析了节点的受力机理，对不同受力机理中所对应的典型公式进行了描述和分析。搜集了国内外8组较为典型的RCS组合节点受剪承载力计算公式，分别对公式的来源、组成、系数取值等进行了分析，并指出了其适用范围。同时搜集了大量RCS组合框架节点的试验资料，利用该8组公式进行了计算，对计算结果和试验结果进行了对比分析。在此基础上，提出了RCS组合节点的抗剪承载力改进公式，利用已有试验数据对所提公式的精确性和适用性进行了分析和验证。此外，还分析了钢梁腹板、混凝土和箍筋三部分对节点受剪承载力的贡献大小，计算结果表明，钢梁腹板和节点区混凝土两部分对承载力的贡献可以达到95%左右。选取本课题组所做的RCS节点试验中的J1和J3两个节点，，对其试验情况进行了介绍，分析了其承载力、骨架曲线等试验结果。利用本文所提承载力公式进行计算，并与试验结果进行对比，结果表明，本文所提公式的适用性较好。
[Abstract]:The reinforced concrete column - steel beam combined frame structure ( RCS combined structure ) is a new kind of structural system which can give full play to the advantages of steel and concrete materials in their respective structure and economy . However , because of the complexity of the structure and force transmission of RCS combined frame structure , the formula for calculating the shear capacity of RC beams is not a uniform standard , so the shear capacity of RCS composite nodes is studied . This paper introduces the typical structure of RCS composite node , analyzes the influence of more commonly used structural measures , such as plane bearing plate , stirrup , steel ring hoop and steel column panel on the load performance of the nodes in the node area . Based on the experimental data , this paper summarizes and analyzes the damage model of shear failure and beam - node damage . Based on the node damage model , the stress mechanism of the node is analyzed , and the corresponding typical formulas in different stress mechanisms are described and analyzed . The formulas for calculating the shear capacity of the typical RCS composite nodes at home and abroad are analyzed , the source , composition and coefficient values of the formulas are analyzed , and the application scope is pointed out . The calculation results and the test results are compared and analyzed by using the 8 - group formula . The contribution of the three parts of the steel beam web , concrete and stirrup to the bearing capacity of the nodes is analyzed . In this paper , the test results of the test results are analyzed and compared with the test results . The results show that the formula proposed in this paper has good applicability .

【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU398.9

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