王俊杰, 王伟, 孙昕. 压型钢板组合梁中柱子结构的抗连续倒塌试验[J]. 工程力学, 2017, 34(增刊): 149-153,178. DOI: 10.6052/j.issn.1000-4750.2016.03.S027
引用本文: 王俊杰, 王伟, 孙昕. 压型钢板组合梁中柱子结构的抗连续倒塌试验[J]. 工程力学, 2017, 34(增刊): 149-153,178. DOI: 10.6052/j.issn.1000-4750.2016.03.S027
WANG Jun-jie, WANG Wei, SUN Xin. EXPERIMENTAL BEHAVIOR OF COMPOSITE BEAM-COLUMN JOINTS WITH STEEL PROFILED DECKING IN A MIDDLE-COLUMN-REMOVAL SCENARIO[J]. Engineering Mechanics, 2017, 34(增刊): 149-153,178. DOI: 10.6052/j.issn.1000-4750.2016.03.S027
Citation: WANG Jun-jie, WANG Wei, SUN Xin. EXPERIMENTAL BEHAVIOR OF COMPOSITE BEAM-COLUMN JOINTS WITH STEEL PROFILED DECKING IN A MIDDLE-COLUMN-REMOVAL SCENARIO[J]. Engineering Mechanics, 2017, 34(增刊): 149-153,178. DOI: 10.6052/j.issn.1000-4750.2016.03.S027

压型钢板组合梁中柱子结构的抗连续倒塌试验

EXPERIMENTAL BEHAVIOR OF COMPOSITE BEAM-COLUMN JOINTS WITH STEEL PROFILED DECKING IN A MIDDLE-COLUMN-REMOVAL SCENARIO

  • 摘要: 以2个配置不同类别压型钢板的组合梁-方钢管柱刚性连接节点为对象,采用双半跨单柱型梁柱子结构,通过静力加载试验研究节点在中柱失效条件下的破坏模式和抗连续倒塌性能。两个试件分别采用开口型压型钢板和闭口型压型钢板。结果表明:开口型压型钢板试件钢梁上翼缘屈曲使得节点区形成明显的塑性铰有效延缓了下翼缘的开裂,能够在抗弯阶段消耗更多能量,但其容易发生压型钢板与混凝土的分离不能保证组合梁的组合性能;闭口型压型钢板试件上翼缘被约束未能屈曲使得下翼缘过早开裂,但闭口型压型钢板能有效约束混凝土保证了中后期组合梁的组合性能。

     

    Abstract: Two experiments were conducted to investigate the failure modes and ductility of composite beam-column joints in a middle-column-removal scenario. Two composite beam-column joints with open and closed type steel profiled decking were statically tested. The results indicate that the beam-to-column assemblies resist the upper load through flexural mechanism and compressive arching action at the beginning and gradually it transfers to catenary action in the later stage. The specimen with open type profiled decking could dissipate more energy via plastic hinge formed by upper flange buckling, but the composite property of the composite slab could not be guaranteed due to insufficient constraint between the decking and concrete. The specimen with closed type profiled decking experienced premature fracture at the lower flange, and the upper flange could not buckle because of the good constraint from decking. However, excellent composite property was ensured in the later stage of loading.

     

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