基于屈服线理论分析预应力钢筋混凝土双向开洞板的极限承载力计算  

Calculation of Ultimate Bearing Capacity of Pre-Stressed RC Concrete Bi-Directional Opening Slab Basing on the Yield Line Theory

作　　者：蓝丽江[1] 张战祥 LAN Li-jiang;ZHANG Zhan-xiang(Bowen College of Management Guilin University of Technology, Guilin 541006, China;Guilin Guoao Investment and Development Co. Ltd., Guilin 541001, China)

机构地区：[1]桂林理工大学博文管理学院,广西桂林541006 [2]桂林国奥城投资开发有限公司,广西桂林541001

出　　处：《工程建设与设计》2018年第13期46-48,共3页Construction & Design for Engineering

摘　　要：根据实验构件裂缝分布形态,应用屈服线理论并考虑加强钢筋及暗梁的加强作用对无黏结预应力混凝土开洞板的承载力进行计算,并与实验值进行比较。结果表明,理论值与实验值吻合较好;考虑了加强钢筋和暗梁的作用时,板的极限承载力较不考虑加强作用时有一定幅度的提高,而设置暗梁时提高幅度更大。Base on crack distribution of experimental slab, the yield line theory and considering the strengthen effect of application of additional reinforcement or mounted beams in opening edges, this paper calculated bearing capacity of un-bonded pre-stressed concrete slab with opening, and compared calculation results with experimental values. The comparison show clearly that the theoretical calculation results are in good compliance with the experimental values. Both theoretical calculation and experiment have approved that, the beating capacity of opening slab is enhanced in a certain degree especially when mounted beams are adopted.

关 键 词：屈服线 预应力 开洞板 承载力 

分 类 号：TU973.251[建筑科学—结构工程] TU973.252