高延性混凝土蒙皮压型钢板预制组合楼板的试验研究  

Experimental study of prefabricated composite floor of high ductility concrete skin profiled steel plate

作　　者：李鑫鑫 陆琨[1] 覃秋冬 LI Xinxin;LU Kun;QIN Qiudong(School of Architectural Engineering,Kunming University of Science and Technology,Kunming650500,China)

机构地区：[1]昆明理工大学建筑工程学院,云南昆明650500

出　　处：《四川建筑科学研究》2024年第1期35-42,共8页Sichuan Building Science

基　　金：西安五和土木工程新材料有限公司横向课题(KKK0202206010)。

摘　　要：基于高延性混凝土研发的新型预制组合楼板(上、下15 mm厚的高延性混凝土薄板夹压型钢板,沿跨度方向封边,形成的具有空间效应的组合楼板)具有耐火性好、自重余拱小且适应于大跨度结构等优势。通过足尺试件的均布堆载试验,研究了新型预制组合楼板在竖向荷载作用下的承载力、变形特征及破坏形态。结果表明:新型预制组合楼板为受弯破坏,受压区高延性混凝土未压碎,压型钢板未出现脆性断裂现象,破坏前有明显征兆,表现出较好的延性;有限元模型的计算结果与试验结果吻合良好,验证了有限元模拟的可靠性。A new prefabricated composite floor developed based on high ductility concrete(a 15 mm thick high ductility concrete sheet clamped profiled steel plate,and banded along the span direction to form a composite floor with spatial effect)has the advantages of fire resistance,small self-weight remaining arch and adaptability to large-span structure.Through the uniform stacking test of full-scale specimens,the bearing capacity,deformation characteristics and failure patterns under vertical load were studied.The results show that the new prefabricated composite floor is bent failure,the high ductility concrete in the compression area is not crushed,the pressed steel plate does not appear brttle fracture,and there are obvious signs before failure.It shows good ductility.The calculation results of the finite element model are in good agreement with the test results.The reliability of the finite element modeling is verified.

关 键 词：高延性混凝土 蒙皮效应 空间结构 预制组合楼板 

分 类 号：TU398[建筑科学—结构工程]