2010年3月 施工技术 第39卷第3期 CONSTRUCTION TECHNOLOGY 63 新型装配式不对称混合连接节点试验研究 梁培新1，郭正兴2 (1.南京工程学院土木工程系，江苏南京211167；2.东南大学土木工程学院，江苏南京210096) [摘要]不对称混合连接是预制装配式混凝土结构的一种新型连接方式.预制梁和柱通过无黏结后张预应力筋装 配形成整体，作为耗能元件的普通钢筋仅设置在梁截面上部，并在梁柱连接处作部分无黏结处理.介绍三福不对 称混合连接边节点的低周反复加载试验，试验结果显示：试件的破坏都集中在粱柱接触面，梁柱构件本身及节点核 心区破坏轻微；试件的滞回曲线均呈现“”形，曲线明显呈不对称形状，正向加载时曲线更为饱满；试件的位移延性 系数在3.75-5.0，最终等效黏滞阻尼系数为8%-10%. [关键词]预制装配式混凝土结构；不对称混合连接；滞回曲线；位移延性；等效黏滞阻尼 [中图分类号]TU378 [文献标识码]A[文章编号]1002-8498(2010)03-0063-03 Experimental Study on New Prefabricated Unsymmetrical Hybrid Subassemblages Liang Peixin' Guo Zhengxing㎡ (1.Department of Civil Enginearing Nanjing Institute of Technology Nanjing Jiangsu 211167 China; 2.College of Civil Engineering Southeast University Nanjing Jiangsu 210096 China) Abstract:Unsymmetrical hybrid connection is a new type of connection of precast prefabricated concrete structure.The precast beams and columns are connected by unbonded post-tensioned prestressed tendons.The unsymmetrical mild steel bars as energy-dissipation ponent are only placed on the upside of the beam section and are set partly unbonded near the interface.The experiments for three exterior subassemblages under low reversed cyclic loading are introduced.The experiment results show that damages concentrate near the beam-column interface while the beam and column remain elastic with few cracks and that all the cyclic curves show the shape of“S"and are unsymmetrical and more plumper under positive loading and that the displacement ductility coef...
新型装配式不对称混合连接节点试验研究.pdf
