桥梁加固分阶段受力抗弯承载力极限状态分析  

Analysis of Ultimate Stage Load-carrying Capacity of Strengthened Bending Member of Bridges

作　　者：孟凡强[1] 周增国[1] 张强 

机构地区：[1]武汉理工大学交通学院,武汉430063 [2]曲阜市公路局,曲阜273100

出　　处：《交通科技》2007年第1期10-12,共3页Transportation Science & Technology

摘　　要：粘贴钢板或其他纤维复合材料对梁的受拉薄弱区进行补强是桥梁加固的主要方式之一。粘贴钢板加固一般采用带载加固,其承载力应按两阶段受力构件计算。在基本假设的基础上,针对桥梁构件两阶段受力的特点,对T形截面梁,分析粘贴钢板加固桥梁构件正截面抗弯承载力的计算公式和适用条件,并给出极限状态加固设计的方法和步骤。It is one of the main methods in bridge reinforcement that bonding steel plate or other fiber compound material is used to strengthen load-carrying capacity of weak member of bridges. The load- carrying capacity of bonding steel plate should be calculated by the 2-stage loading method. According to the characteristic of 2-stage loading , the calculation method and expressions of load-carrying capacity of cross section of strengthened bending member and its applications are analyzed on the basis of basic supposes. The design method and calculation steps of strengthened bridges in the ultimate states are given.

关 键 词：粘贴钢板 桥梁加固 分阶段受力 正截面承载力 极限状态 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]