竹框架装配式梁柱节点单调加载试验  

Experimental behavior of fabricated beam-column connection of bamboo frame under monotonic loading

作　　者：周军文[1,2] 黄东升[1] 黄子睿 沈玉蓉[1] ZHOU Junwen;HUANG Dongsheng;HUANG Zirui;SHEN Yurong(College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China;School of Civil and Architecture Engineering, Changzhou Institute of Technology, Changzhou 213032, Jiangsu, China;School of Civil Engineering, Southeast University, Nanjing 210037, China)

机构地区：[1]南京林业大学土木工程学院,南京210037 [2]常州工学院土木建筑工程学院,常州213032 [3]东南大学土木工程学院,南京210096

出　　处：《林业工程学报》2018年第3期122-127,共6页Journal of Forestry Engineering

基　　金：国家自然科学基金(51778299);建设部科技项目(2014-K2-014);江苏省普通高校研究生(博士)科研创新计划项目(CXZZ13_0539);常州工学院科研项目(YN1615)

摘　　要：竹结构房屋是一种典型的装配式建筑,节点是整个结构中最重要的组成部分,也是最薄弱的部位,节点的破坏会导致整个结构的倒塌,为此设计了一种由竹质构件和钢结构部分组成的装配式框架节点,为了解新型装配式节点的力学性能,制作两组共4个足尺模型试件,进行单调加载试验,分别调查节点梁翼缘钢板及柱套钢板厚度对节点力学性能的影响,得到了每个节点的荷载-位移曲线和弯矩-转角曲线,4个节点的极限转角为0.095,0.097,0.080和0.079 rad,4个试件的极限承载力分别为12.10,16.60,11.70和14.63 k N,并在试验的基础上,给出了节点的弯矩-转角曲线方程,4个试件的第一刚度分别为283,396,241和622 k N·m/rad。结果表明,增加节点梁翼缘钢板厚度既可以提高承载力,又可以增加节点的转动能力;增加柱套钢板的厚度可以提高节点的承载力和初始转动刚度。As a natural and renewable resource, bamboo is capable of rapid growth that can avoid future deforestation of precious forests. Its capacity to absorb energy and the higher bending strength makes the bamboo an ideal material for seismic-resistant constructions. Thus, the bamboo is promising to be used as components of building materials. Since the bamboo structure is a typical fabricated building, the connection of building is most important part and the frailest location in the whole structure. The failure of connection often brings about the collapse of the whole building. Therefore, a new fabricated frame connection made from steel structural parts was designed to improve the mechanical performance. Among the structure connections, the beam and column components were the bamboo, and a new steel connector was applied to connect the two components of top column and bottom column, column and beam. The four full-scale specimens were divided into two groups, and used to investigate the effect of thickness of beam flange steel plate and column steel plate on the mechanical property of overall structure. The loading-displacement curve and mo-ment-rotation curve of connection specimens were obtained, and the ultimate rotations of four specimens were 0.095, 0.097, 0.080 and 0.079 rad, respectively. The ultimate bearing capacities of the four beam-column connection speci-mens were 12.10, 16.60, 11.70 and 14.63 kN, respectively. The equation for the moment-rotation curve based on the tested results was developed in this study. The first stiffness of moment-rotation curve of the four specimens was 283, 396, 241 and 622 kN-m/rad. The tested results indicated that the increase in thickness of beam flange steel plate im-proved not only the bearing capacity, but also the rotation capacity of fabricated connection. The increase in thickness of the column steel plate also improved both bearing capacity and initial rotation stiffness. The tested result of the ulti-mate canacity of connection was higher than the oretical value fr

关 键 词：竹框架 装配式节点 单调加载 转动能力 承载力 

分 类 号：TU398.6[建筑科学—结构工程] TU317.1