摘要
按作者所进行的34根两等跨连续深梁的试验资料和非线性有限元法的分析和研究,连续深梁的抗剪受力特性和破坏机理,当跨高比l/h≥1.5或剪跨比λ>0.75时,连续深梁由于反弯区段内应力重分布而使抗剪强度低于简支深梁。作者从连续深梁抗剪的受力特性建立力学模型,结合试验结果提出连续深梁的抗剪强度和抗裂度的计算公式供设计者使用。
In accondance with the data obtained by the authors from the test of 34 reinforced concrete continuous deep beams and the nonlinear analysis of finite elemnt. This artcle introduces the shearig behaviour and collapse mechanism of reinforced concrete continuous deep beams. When the span—depth ratio is more than or epual to 1.5 or the shearing span satio is more than 0.75, the shearing strength is less than the simpl support deep beams. a Based on the shearing behaviour and test data, mechanical modal is set up and the shearing strength and crazing formulae are provided in combination with experimental results.
