预应力预制混凝土框架节点形式及设计方法  

RESEARCH ON FORM AND DESIGN METHOD OF THE PRESTRESSED SELF-CENTERING CONCRETE FRAME JOINTS

作　　者：蔡小宁 孟少平[2] 徐建凯 王丹 CAI Xiaoning;MENG Shaoping;XU Jiankai;WANG Dan(School of Civil and Harbor Engineering,Jiangsu Ocean University,Lianyungang 222005,China;Key Laboratory of Concrete&Prestressed Concrete Structures of the Ministry of Education,Southeast University,Nanjing 210096,China;Asset Management Co.,Ltd.,Changzhou Institute of Technology,Changzhou 213000,China)

机构地区：[1]江苏海洋大学土木与港海工程学院,江苏连云港222005 [2]东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096 [3]常州工学院资产经营有限公司,江苏常州213000

出　　处：《工业建筑》2020年第1期7-11,6,共6页Industrial Construction

基　　金：国家自然科学基金项目(51878315,51508220);江苏省高校自然科学研究面上项目(17KJB560001);连云港市“521工程”科研资助项目(LYG52105-2018029);江苏省住房和城乡建设厅科技项目(2018ZD111)

摘　　要：构建了一种新型的预应力预制混凝土框架节点,该节点的梁、柱构件通过预应力筋、角钢以及高强螺栓连接而成,经试验验证该类节点兼具良好的自复位能力和耗能能力。为了便于推广应用,针对这种基于角钢-高强螺栓连接的预应力预制混凝土框架节点的梁柱连接,提出设计方法,包括使用阶段的承载能力极限状态和正常使用极限状态并考虑施工阶段节点的工作状态,提出确定预应力筋的面积、初始张拉力、角钢尺寸及螺栓连接位置等设计参数的方法。A new type of prestressed precast concrete frame joint was proposed.The beam and column members of the joint were connected by prestressed tendons,angle steel and high-strength bolts.The joints showed good self-centering capability and energy consumption.A design method was proposed for the beam-column connections of the prestressed self-centering concrete frame joints based on the connection of angle steel and high-strength bolt.The contents of the design method included the bearing capacity limit state and normal service limit state in use stage and the working state in construction stage of the joints.The paper proposed the method for determining the design paramters,such as the area of prestressing tendon,the initial tension,the angle steel size,and the position of bolted connecting to the joints.

关 键 词：预应力 自复位 角钢 节点 设计方法 

分 类 号：TU378.4[建筑科学—结构工程]