装配式混凝土框架梁-耗能段连接节点的力学性能  

Mechanical property of the prefabricated connection between concrete frame beam and shear link

作　　者：郭琪 宋固全[1] 胡淑军[1,2] 曾思智 顾琦 GUO Qi;SONG Guquan;HU Shujun;ZENG Sizhi;GU Qi(School of Civil Engineering and Architecture,Nanchang University,Nanchang 330031,China;Jiangxi Provincial Engineering Laboratory of Nearly Zero Energy Building,Nanchang 330031,China;Zhongmei Engineering Group Ltd,Nanchang 330001,China)

机构地区：[1]南昌大学建筑工程学院,江西南昌330031 [2]江西省近零能耗建筑工程实验室,江西南昌330031 [3]江西中煤建设集团有限公司,江西南昌330001

出　　处：《南昌大学学报（工科版）》2019年第4期345-351,共7页Journal of Nanchang University(Engineering & Technology)

基　　金：国家自然科学基金资助项目(51768044,51908268);江西省自然科学基金资助项目(20181BAB206042)。

摘　　要：提出一种新型装配式混凝土框架梁-耗能段连接节点,并采用校正的有限元法对其力学性能和影响因素进行研究。结果表明:各分析模型中混凝土最大损伤为93%,提高对穿螺栓预拉力和混凝土强度可有效地减小混凝土的损伤程度和损伤区域,损伤可减小至76%,且所得的滞回曲线与相应纯耗能段的滞回曲线基本一致。此外,所提出的新型节点设计方法,可使耗能段达到极限状态时对穿高强螺栓仍处于弹性状态,使得该种节点具有良好的抗震性能和震后功能恢复能力。A new type of connection between concrete frame bream and shear link was developed,and the mechanical property and corresponding influence factors of the new connections were investigated in detail by using a verified finite element analysis method.The results showed that the concrete damage degree and damage zone in the new connection was reduced from 93% to 76% by increasing the concrete strength and bolt pretention,and the hysteresis curves of new connections with different influencing factors was almost the same with the hysteresis curve of corresponding shear link.In addition,the through high-strength bolts were still in elastic state under ultimate bearing capacity by using the proposed design method,so the seismic performance and seismic resilience capacity of the new connection could be guaranteed.

关 键 词：装配式混凝土结构 偏心钢支撑 耗能段 震后功能恢复能力 滞回曲线 

分 类 号：TU319[建筑科学—结构工程]