高强细晶粒钢筋与纤维增强水泥基复合材料人防框架梁受弯试验及有限元分析

Experimental and Finite Element Analysis for High-Stress Fine Grain Bar and Fiber Reinforced Cementitious Composites Protective Framework Beams

为有效提高人防框架梁的受弯性能,减小构件截面高度,将高强细晶粒钢筋(HRBF500)和纤维增强水泥基复合材料(FRCC)组合形成一种新型人防框架梁,设计制作2榀HRBF500/FRCC人防框架试件与2榀HRB335/C30对比人防框架试件,进全过程等效静力试验,同时应用ANSYS软件建模分析试验过程,试验和分析结果均表明:在受弯承载力接近的前提下,新型框架梁截面高度可减小27%,跨中极限位移值增大2倍以上,两种高新材料的结合,在人防工程中具有一定的应用价值。

In order to improve the flexural behaviors of protective framework beams, reduce the section height, combining HRBF500 and FRCC can form high-performance reinforcement cementitious protective framework beams. Two FRCC with HRBF500 protective frames and two C30 with HRB335 contrast frames are made to conduct overall process equivalent static test, contrasting the load-deflection curve under different working conditions and different materials. The results manifested that in the same flexural capacity conditions, beam height can reduce 27%;the cross-in-the-limit displacement value increases 2 times. The usage of this new material is of great application value.