超高性能混凝土全装配式阀厅内嵌式防火墙抗震性能试验研究  

Experimental Study on Seismic Performance of Embedded Fire-resistant Wall in UHPC Fully Assembled Valve Hall

作　　者：李建勤 高湛 胡劲松 王晖 焦一飞 LI Jian-qing;GAO Zhan;HU Jing-song;WANG Hui;JIAO Yi-fei(State Grid Beijing Institute of Economics and Technology,Beijing 102209,China;Zhongnan Electric Power Design Institute Co,Ltd,Wuhan 430071,China;State Grid Corporation of China,Beijing 102209,China;State Grid Sichuan Electric Power Corporation,Chengdu 610041,China)

机构地区：[1]国网经济技术研究院有限公司,北京102209 [2]中国电力工程顾问集团中南电力设计院有限公司,武汉430071 [3]国家电网有限公司,北京102209 [4]国网四川省电力公司,成都610041

出　　处：《武汉理工大学学报》2024年第12期77-82,共6页Journal of Wuhan University of Technology

基　　金：国家电网有限公司科技项目(5108-202218280A-2-317-XG)。

摘　　要：为研究超高性能混凝土全装配式阀厅内嵌式防火墙抗震性能,选取原型顶部有梁的剪力墙节段制作缩尺比例模型,并进行拟静力试验。在试验模型顶部沿梁方向施加低周往复荷载,研究试件的裂缝发展、破坏模式和滞回曲线等抗震性能。结果表明:塑性阶段竖向裂缝集中出现在墙板两侧,破坏阶段墙体两端连接节点角落被拉开,最后在半圆弧形槽口处发生挤压破坏。试件滞回环整体饱满,表明结构具有较好的耗能能力;试件整体破坏形态为弯剪破坏,具有较好的变形能力。To study the seismic performance of the embedded fire-resistant wall in the fully assembled valve hall made of ultra-high performance concrete(UHPC),scaled model of the fire-resistant wall segment with a beam at the top of the prototype was selected and subjected to pseudo-static tests.Cyclic load was applied along the beam direction at the top of the specimen to study the crack development, failure mode, and hysteretic curve.The results show that vertical cracks concentrate on both sides of the wall panel during the plastic stage.During the failure stage, the corners of the connection at both ends of the wall are pulled apart, and finally damage occur near the semi-circular groove.The hysteresis loop of the specimen is full, indicating that the structure has good energy dissipation capacity.Besides, the global failure characteristics of the specimen belong to bending-shear failure with good deformation ability.

关 键 词：内嵌式剪力墙 超高性能混凝土 拟静力试验 抗震性能 耗能能力 

分 类 号：TU398.2[建筑科学—结构工程]