轻型装配式框架-变形可控地聚物墙抗震性能

Seismic performance of assembled lightweight steel frame with deformation controllable connection of geopolymer wall

为研究轻型装配式框架-变形可控地聚物混凝土墙的抗震性能,进行了1个轻型装配式框架和3个不同连接方式的轻型装配式框架-地聚物混凝土墙足尺模型的低周反复荷载试验,主要研究连接方式对结构承载力、延性、耗能、破坏特征、损伤演化规律等的影响,验证各装配化部件间连接效果.研究表明:轻型装配式框架各部件间连接可靠,具有良好的抗震性能;地聚物混凝土墙具有与普通混凝土墙相似的损伤演化规律;地聚物混凝土墙与框架间通过变形可控连接,提高了框架-地聚物混凝土墙的变形能力和延性;地震作用下轻型装配式框架-变形可控型地聚物混凝土墙具有多道抗震防线,可满足地震区低多层建筑的抗震设防要求.

In order to study the seismic performance of assembled lightweight steel frame with deformation controllable connection of geopolymer concrete wall,one assembled lightweight steel frame and three assembled lightweight steel frame specimens of different types of connection with geopolymer concrete wall were constructed and tested under cyclic loading.The main purpose of this study is to analyze the effect of the connection type on the load bearing capacity,ductility,energy dissipation ability,damage characteristics,and damage evolution law of the structure and to verify the reliability of the deformation controllable connection among the assembled components.Test and analysis results show that the connections among the components of the lightweight steel frame were reliable,and the assembled lightweight steel frame with deformation controllable connection geopolymer concrete wall exhibited good seismic performance.Geopolymer concrete wall had similar damage evolution law with common concrete walls.The relative displacement due to the deformation controllable connection between the wall and frame improved the ductility and deformability significantly,and prevented geopolymer concerte wall from cracking under frequent or moderate earthquakes.Assembled lightweight frame with deformation control connection geopolymer concrete wall have multiple seismic resistant measures,which can meet the seismic resistant requirements in earthquake-prone area.