玻化微珠保温混凝土框架角节点抗震性能  

Seismic behavior of top corner joints of glazed hollow bead thermal insulation load-bearing concrete frame

作　　者：柴磊磊 张玉[1] CHAI Leilei;ZHANG Yu(College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

机构地区：[1]太原理工大学土木工程学院,太原030024

出　　处：《中国科技论文》2021年第2期188-192,共5页China Sciencepaper

基　　金：国家自然科学基金资助项目(51808375)。

摘　　要：为了研究玻化微珠保温混凝土角节点的抗震性能,对玻化微珠保温承重混凝土(HSKJJ)和普通混凝土(SKJJ)的框架顶层角节点进行拟静力试验,研究构件破坏形态和破坏过程,分析其滞回曲线、骨架曲线、刚度退化曲线和耗能系数。研究结果表明:HSKJJ和SKJJ核心区均发生剪切破坏,HSKJJ较SKJJ的开裂荷载、屈服荷载、破坏荷载分别提高8.5%、10.6%、16.5%;HSKJJ的滞回曲线较SKJJ更加饱满,通过骨架曲线可以看出HSKJJ各阶段的承载能力均有所提高;HSKJJ早期耗能能力优于SKJJ,后期有所降低,表明掺加玻化微珠能够在一定条件下提高混凝土角结点的抗震性能。In order to study the seismic behavior of the top corner joints of glazed hollow bead thermal insulation concrete(HSKJJ)and ordinary concrete(SKJJ),quasi-static tests were carried out to study the failure mode and process of the specimens,with analyzing the hysteretic curve,skeleton curve,stiffness degradation curve and energy dissipation coefficient.The results show that the shear failure occurs in the core area of the two specimens,and the seismic performance indexes of the vitrified bead thermal insulation bearing concrete corner joint are better than that of the ordinary concrete corner joint,which shows that the seismic performance of the glazed hollow bead thermal insulation bearing concrete corner joint can meet the current seismic design standards.

关 键 词：保温承重混凝土 框架顶层角节点 拟静力试验 抗震性能 

分 类 号：TU528[建筑科学—建筑技术科学]