装配式混凝土建筑梁柱节点加固方法研究  

Research on Strengthening Method of Prefabricated Concrete Beam Column Joints

作　　者：林琳[1] LIN Lin(Department of Civil Engineering and Architecture,Liming Vocational University,Quanzhou 362000,Fujian,China)

机构地区：[1]黎明职业大学土木建筑工程学院,福建泉州362000

出　　处：《兰州文理学院学报（自然科学版）》2023年第2期77-82,共6页Journal of Lanzhou University of Arts and Science(Natural Sciences)

基　　金：2021年黎明职业大学绿色智能建筑改造与传统建筑活化应用技术协同创新中心(LMPT202103);2019年福建省中青年教师教育科研项目(科技类)(JAT191463);2020年度黎明职业大学科研团队(LMTD202004)。

摘　　要：建筑梁柱节点是受力最多的部位,外力破坏下最先发生破坏,对此提出装配式混凝土建筑梁柱节点加固方法.使用芳纶纤维布实现梁柱节点加固,按照加固层数与加固方式不同制备4种试件,利用千斤顶向试件施加荷载模拟外力破坏,测试各个试件的承载力,同时构建有限元模型计算并绘制试件的滞回曲线、骨架曲线与延性变化.试验结果表明,缠绕两层芳纶纤维布并在节点位置二次加固的试件C具有良好的承载力,从滞回曲线与骨架曲线变化效果可以确定该试件能够承载较为严重的外力破坏,同时该试件延性系数提高率达到21.92%,加固性能良好.Building beam-column joints are the most stressed parts,and the first damage occurs under external force damage.Therefore,the reinforcement method of beam-column joints of assembled concrete buildings is studied.Aramid fiber cloth was used to reinforce the beam-column joints.Four kinds of specimens are prepared according to the number of reinforcement layers and reinforcement methods.The jack is used to apply load to the specimens to simulate the external force failure,and the bearing capacity of each specimen is tested.At the same time,the finite element model is constructed to calculate and draw the hysteresis curve,skeleton curve and ductility change of the specimens.The test results show that the specimen C with two layers of aramid fiber cloth and secondary reinforcement at the joint position has better bearing capacity.From the hysteresis curve and the skeleton curve change effect,it can be determined that the specimen can bear more serious external force damage,at the same time,the ductility coefficient of the specimen increases by 21.92,and the reinforcement performance is good.

关 键 词：装配式 混凝土 建筑梁柱 节点加固 芳纶纤维布 承载力 

分 类 号：U446[建筑科学—桥梁与隧道工程]