Study on Out-of-plane Shear Behavior of New Tubular Roof Prefabricated Structures
Study on Out-of-plane Shear Behavior of New Tubular Roof Prefabricated Structures
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DOI：
10.1016/j.cscm.2023.e01857
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发表时间：
2023-01
影响因子：
6.2
通讯作者：
Yanqing Zhang;Long You;Shi Han;Yvxuan Lv;Feiyang Hou;S. Duan
中科院分区：
文献类型：
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作者：
Yanqing Zhang;Long You;Shi Han;Yvxuan Lv;Feiyang Hou;S. Duan
管形屋盖预制（TPR）结构由钢管屋盖和钢筋混凝土组成。为充分利用管型屋面材料，对TPR结构进行了改进，用拉结钢筋代替箍筋。本文通过两个试件的试验，以横向配筋率为参数，研究了新型TRP结构构件的抗剪性能。结果表明，横向钢筋的数量影响构件的破坏形态和抗剪承载力。建立了三维有限元模型，对新型TRP构件的抗剪性能进行了数值模拟，有限元计算结果与试验结果吻合较好。基于该模型，分析了各种因素对新型TRP构件抗剪性能的敏感性。确定了主要影响因素，验证了不同规范中抗剪承载力计算公式对新型TRP结构构件的适用性。
The tubular roof prefabricated (TPR) structures consist of steel tubular roof and reinforced concrete. To make full use of tubular roof materials in the structures, the TPR structure is innovated by replacing stirrups with tie bars. This paper performed tests on two specimens with transverse reinforcement ratio as parameter to investigate the shear behavior of new TRP structure members. The results show that the number of transverse reinforcement influences the members’ failure model and shear-bearing capacity. Three-dimensional finite element (FE) models were developed to simulate the shear behavior of new TRP members, and the FE results were in good agreement with the experimental results in the tests. Based on this model, the sensitivity of different factors on the shear performance of new TRP members were analyzed. The main influencing factors were determined, and the suitability of the shear capacity calculation formulas in different codes for new TRP structure members is verified.