摘要
以预应力装配式混凝土结构T形梁柱节点为对象,分析节点在施加初始预应力和受弯承载能力极限状态下,混凝土和预应力筋的应力、应变及其相互关系,在考虑梁端开口转动对预应力筋和混凝土应变影响的基础上,建立T形节点梁端抗弯承载力计算方法。将理论公式计算得到的极限承载力与基于Abaqus软件数值模拟得到的抗弯极限承载力进行了对比,理论计算结果与数值分析结果符合较好,表明文中提出的理论公式可用于该类结构的抗弯极限承载力的计算。
The beam-column joints of the unbounded precast prestressed concrete(PCaPC)structure experience opening between the columns and beams under earthquake loading,and the prestressed tendons experience uniform strain.The calculation of the moment capacity of this type of structure was different from the conventional concrete structures.In order to develop an estimation method for the moment capacity of beam-column joints of PCaPC structures,the stress and strain of the concrete and the prestressed tendons of beam-column joint under limit state were analyzed,and their relationship was discussed.Based on the analysis,aprocedure for estimating the ultimate moment capacity of the T-shape beamcolumn joint was developed.The accuracy of the proposed procedure was verified by comparing the computation results derived from the proposed method and the results obtained from the finite element analysis.The results show that the proposed procedure is capable of estimating the moment capacity of beam-column joints of PCaPC structures.
作者
张华珺
蒲武川
ZHANGHua-jun;PU Wu-chuan(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China)
出处
《武汉理工大学学报》
CAS
北大核心
2019年第3期66-72,81,共8页
Journal of Wuhan University of Technology
关键词
抗弯承载力
预应力装配式混凝土结构
有限元模拟
moment capacity
precast prestressed concrete structure
finite element simulation
