闭口型压型钢板截面力学特性试验研究  

Experimental study on cross-section mechanical properties of closed profiled sheeting-concrete composite slab

作　　者：王秋维[1] 史庆轩[1] 李卫涛[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《建筑结构》2014年第12期95-99,共5页Building Structure

基　　金：国家自然科学基金项目(51178380;51108370);高等学校博士学科点专项科研基金项目(20116120120004);陕西省自然科学基础研究基金项目(2012JQ7027)

摘　　要：以《金属压型板试验欧洲建议》为依据,对4块1∶1尺寸闭口型压型钢板试件进行截面力学特性试验研究,并分别采用荷载-挠度曲线方法和极限弯矩方法确定截面特性。分析结果表明:荷载-挠定曲线方法计算所得结果比理论值偏大较多,正向加载时极限弯矩方法计算所得结果与理论值吻合良好,而负向加载时差别较大,原因是负向加载时,闭口型压型钢板受压翼缘中部分钢材没有全截面发挥作用。在此基础上,进一步提出全截面特性和有效截面特性两个概念,并建议对闭口型压型钢板正负向加载时的截面特性应分别予以考虑。The cross-section mechanical properties of 4 full-size closed profiled sheeting-concrete composite slab specimens were tested according to European Recommendations for the Testing of Profiled Metal Sheets. The load-deflection curve method and ultimate moment method were adopted to determine cross-section properties. The analysis results show that the results obtained by load-deflection curve method are larger than theoretical values, and the results obtained by ultimate moment method are in good agreement with theoretical values under the positive loading, while results are obvious different under the reverse loading. The main reason is that partial steel in compressed flange fails to function under the reverse loading. Two concepts of whole cross-section property and effective cross-section property were further proposed on the base of results, and the suggestions were given that cross-section properties of closed profiled sheeting-concrete composite slab should be separately considered under different loading directions.

关 键 词：闭口型压型钢板 全截面特性 有效截面特性 极限弯矩法 

分 类 号：TU398.9[建筑科学—结构工程]