火灾配筋混凝土空心板梁承载力试验研究  

Experimental Research on Bearing Capacity of Reinforced Concrete Hollow Slab Beams after Fire

作　　者：王保群 邢德进 陶莉莉 董旭 WANG Bao-qun;XING De-jin;TAO Li-li;DONG Xu(School of Civil Engineering,Shandong Jiaotong University,Jinan 250357,China)

机构地区：[1]山东交通学院交通土建工程学院,济南市250357

出　　处：《公路》2020年第7期104-108,共5页Highway

基　　金：交通运输部应用基础研究项目,项目编号2015319817280;山东省科技发展计划项目,项目编号2014GGX105005。

摘　　要：以某高速公路桥梁火灾后配筋混凝土实体板梁为研究对象,对其进行了不同火灾工况下梁体承载力试验,得出了不同火灾工况下梁板承载力变化规律,建立了火灾后梁体承载力修正公式和梁体刚度修正系数,为开展配筋混凝土桥梁火灾损伤后性能评价和科学处治提供借鉴。In this paper,the reinforced concrete solid slab beam of a highway bridge after fire is taken as the study object,and the bearing capacity of the beam under different fire conditions is tested.The changing law of the bearing capacity of the beam and slab under different fire conditions is obtained,and the revised formula of the bearing capacity of the beam and the revised coefficient of the stiffness of the beam after fire are established.The research results can provide reference for the performance evaluation and scientific treatment of reinforced concrete bridges after fire damage.

关 键 词：空心板梁 火灾 承载力 修正计算 试验研究 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]