新夹心楼板耐火性能及火灾修复后抗弯性能试验研究

对一种新型夹心板的耐火性能及火宅修复后楼板的抗弯性能进行试验研究,试件的耐火性能主要体现在构件的承载力、完整性和隔热性上.基于试验结果,重点分析夹心板的耐火极限和加固试件的承载力、变形能力、破坏形态和破坏机理等,得出板材在弹性、带裂缝、破坏阶段的钢丝网架和混凝土之间的相互作用,从而得到楼板在破坏时的最大承载力.结果表明...

Experimental study on fire and bending resistance of sandwich floor after fire repair

A new type of sandwich plate is presented in this paper.The fire-resistant performance of the plate and the flexural performance of the floor plate after fire repair are tested and studied.The fire-resistant performance of the specimen is mainly reflected in the bearing capacity,integrity and insulation of the components.Based on the test results,the fire-resistant limit of the sandwich plate and the bearing capacity,deformation capacity,failure form and failure mechanism of the reinforced specimens are analyzed,and the interaction between the steel wire mesh frame and concrete during the elastic,crack and ring breaking stages of the slab is obtained,so as to obtain the maximum bearing capacity of the slab during the failure.The results show that the floor slab has good bending resistance and long life after fire reinforcement,and can be used in many kinds of buildings.