钢-混凝土高托座组合梁设计中的若干问题

本文对钢-混凝土高托座组合梁进行了较全面的分析。特别是对组合梁的挠度进行了研究,对组合梁截面设计采用优化方法,即在满足强度、刚度要求的情况下,使造价最低。作者进行了10个抗剪推力试件及3根钢-混凝土高托座组合梁的破坏试验。试验表明,托座具有较好的抗剪强度,本文提出的组合梁挠度计算公式在弹性范围与试验结果吻合较好。

SEVERAL SUPPLEMENTAL RECOMMENDATION IN THE DESIGN OF STEEL-CONCRETE HIGH-HAUNCHED COMPOSITE BEAMS

In this paper, the behavior of steel-concrete high -haunched composite beams is analysed, especial-ly the deflection of composite beams are studied. The design of the cross-section of composite beamshas been optimized, which satisfies both the strength and stiffness of the composite beams and greatly re-duces the construction cost. Ten shear connector pushed test samples and three high-haunched compo-site beams were tested. The results of the tests show that concrete haunched beams of thehigh -haunched composite beams have adequate shearing strength. The calculating formula for deflec-tion of composite beams coincides with the test date in the elastic range.