火灾中植筋连接构件极限承载力试验研究  

Experimental Study on Ultimate Strength of Post-Installed Rebar Connection Members in Fire

作　　者：邹勇[1] 陆洲导[1] 余江滔[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《结构工程师》2011年第3期92-97,共6页Structural Engineers

基　　金：国家重点试验室基金(SLDRCE09-D-02);高等学校博士学科点专项科研基金(200802471089)

摘　　要：为研究火灾中植筋连接构件的极限承载力,进行了6个植筋连接构件的受火试验。试件设计考虑了植筋深度和保护层厚度两种影响因素。试验中先对植筋试件施加一定荷载,约为常温下常规植筋构件设计承载力的10%,且在试验过程中保持不变;然后按照ISO834标准升温曲线对植筋构件进行加热升温,待构件受火90 min后,对植筋构件进行加载直至构件破坏失效。试验结果表明:植筋深度和保护层厚度对火灾中植筋连接构件的极限承载力均有重要影响。To study the ultimate strength of post-installed rebar connection members in fire,6 specimens were subjected to the temperature according to the ISO834 heating curve and tested with a constant load,which was set as 10 percent of the designed loading capacity of the same specimens at ambient temperature.When the specimens were exposed to fire for 90 minutes,the load applied on the specimens increased till the specimens failed.Two kinds of embedment depths and three kinds of concrete covers were considered for the test specimens.The test results show that both coverage coat and embedment depth have significant effects on the ultimate strength of post-installed rebar connection members in fire.

关 键 词：火灾 植筋 极限承载力 保护层厚度 植筋深度 

分 类 号：TU375[建筑科学—结构工程]