混凝土矩形孔梁破坏模式及强度设计方法  

Failure mode and strength design method for concrete beams with rectangular opening

作　　者：王瑶[1] 吴胜兴[2] 

机构地区：[1]金陵科技学院建筑工程系,江苏南京210001 [2]河海大学土木工程学院,江苏南京210098

出　　处：《水利水电科技进展》2005年第3期41-44,50,共5页Advances in Science and Technology of Water Resources

摘　　要：将矩形孔梁的破坏模式分为7类,根据其受力特点和破坏模式确定轴力和剪力在上、下弦杆的分配方法,提出符合现行规范的矩形孔梁的截面设计方法,并通过算例进一步计算说明.建议以孔口危险截面的最小承载力为依据计算结构承载力,并提出了两种验算孔口截面安全性的方法.The failure modes of concrete beams were divided into seven patterns. According to the stress characteristics and failure mode, the method to determine the axial stress and shear stress distribution was presented, and a cross section design method in accordance with current codes was also given. Through case study, it is suggested that the bearing capacity of structures should be calculated based on the minimum bearing capacity of the dangerous section of orifices. Finally, two methods to verify the safety of orifice section were put forward.

关 键 词：钢筋混凝土梁 矩形孔梁 截面设计 孔口破坏模式 非线性有限元 强度设计计算 

分 类 号：TU375.1[建筑科学—结构工程]