叠合板用预制预应力混凝土带肋薄板的刚度试验研究与计算方法  

Experimental Study and Calculating Methods on Bending Rigidity of Precast Prestressed Concrete Ribbed Panels for Composite Slabs

作　　者：吴方伯[1] 黄海林[1] 陈伟[1] 周绪红[1] 

机构地区：[1]湖南大学土木工程学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2011年第4期1-7,共7页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(50978090);湖南大学研究生创新基金资助项目(CX2010B143);湖南大学博士学位论文选题资助计划项目

摘　　要：为探讨新型预制预应力薄板(带肋且肋上设有孔洞,截面刚度呈阶梯形变化)的短期刚度与弯曲挠度的计算方法,进行了10块矩形肋预制预应力带肋薄板、2块T形肋预制预应力带肋薄板静载试验,得到了跨中荷载-挠度曲线.理论推导得到考虑肋上孔洞分布及肋端缺口的预制预应力带肋薄板弯曲挠度通用公式以及等效刚度公式,便于编制计算机程序进行计算.对比分析了基于等效刚度公式计算及试验得到的跨中荷载-挠度曲线,结果表明:均布荷载作用下两端简支预制预应力带肋薄板短期刚度可按0.85倍等效刚度计算.In order to discuss the calculating methods of short term rigidity and bending deflection,ten precast prestressed concrete ribbed panels（PPCRP） with rectangular rib and two PPCRP with T-shaped rib were tested,and the load-deflection curves were obtained.The general formula of bending deflection taking into account the distribution of preformed holes in the rib and equivalent rigidity formula for PPCRP were deduced.The contrast analysis of load-deflection curves obtained from equivalent rigidity formula and test result show that short term rigidity of simply supported PPCRP under uniformly distributed load can be calculated at 0.85 times as equivalent rigidity.

关 键 词：叠合板 带肋薄板 预制混凝土 弯曲挠度 阶梯形刚度 

分 类 号：TU375.2[建筑科学—结构工程]