摘要
通过分析钢混结合面相对位移和结合面处裂缝张开的变化,对该管片钢混结合处力学性能变化及破坏全过程进行研究,并将其分为3个阶段。试验结果表明:钢混结合面的屈服剪力为380kN,极限抗剪承载力为450kN,远大于设计荷载375kN,意味着试验的钢混结合面可满足抗剪设计要求。并通过试验数据拟合得到了3个阶段的抗剪刚度。
By analyzing the changes of the relative displacement and the crack opening of steel-concrete composite surface,the change of mechanical behaviors of the joint structure and the whole process of damage were explored. It was divided into 3 stages. The test results show that the yield shear force of the steel-concrete joint surface is 380 kN, far greater than the design load 250 kN, and the ultimate shear capacity is 450 kN, which means that the steel and concrete joint surface of the test can meet the requirements of shear design. The shear stiffness of the three stage was obtained by fitting the test data.
作者
邓高林
庄欠伟
李东
张弛
DENG Gaoli;ZHUANG Qianwei;LI Dong;ZHANG Chi(Department of Civil Engineering,Shanghai University,Shanghai 200444,China;Shanghai Shield ＆ Research Center Co.,Ltd.,Shanghai 200137,China)
出处
《施工技术》
CAS
2018年第19期42-45,共4页
Construction Technology
关键词
盾构
钢混复合管片
钢混结合面
位移
试验
shields
steel-concrete composite segment
steel-concrete composite surface
displacement
testing
