钢混叠合梁拉索锚固区受力性能分析  

Analysis on Mechanical Property in Cable Anchorage Zone of Steel-concrete Combined Girder

作　　者：王良雷 

机构地区：[1]华东建筑设计院市政工程设计院,上海市200041

出　　处：《城市道桥与防洪》2016年第10期40-43,9,共4页Urban Roads Bridges & Flood Control

摘　　要：斜拉桥结构已经成为了桥梁工程中最常见的一种结构形式,近年来有了较大的发展。但拉索锚固区的合理设计一直是斜拉桥设计的重点。斜拉桥的索梁锚固形式的优化也有一定程度的发展,最常见的索梁锚固形式包括齿块式、锚箱式、锚拉板式等,其中锚拉板式应用相对较少。针对背景工程在叠合梁中所用的锚拉板式索梁锚固区开展相关研究,对锚头与锚垫板之间的传力特性进行了接触非线性分析,对锚固区内锚拉板自身的结构性能,锚固区内主梁的力学性能进行了研究。并对锚固区内关键焊缝的受力情况进行研究,对锚固区的结构性能进行了综合评价。The cable-stayed bridge structure has become the most common structural style in the bridge engineering, and is greatly developed in the recent years. But the reasonable design of cable anchorage zone is always the emphasis in the design of cable-stayed bridge. The optimization of cable and beam anchorage style of cable-stayed bridge is also developed in a certain extent. The most common cable and beam anchorage types include the tooth block type, anchor box type and anchor plate type, in which the anchor plate type is relatively less used. Aiming at the background engineering, the article studies the anchor plate type of cable and beam anchorage zone used in the combined beam, analyzes the contact nonlinearity of the force transmission characteristic between anchor head and anchor bearing plate, studies its structural property of anchor plate and the mechanical property of main beam in anchorage zone, and studies the mechanical state of key welding lines, and comprehensively assesses the structural property of anchorage zone.

关 键 词：斜拉桥 锚拉板 受力性能 数值模拟 焊缝应力 

分 类 号：U441[建筑科学—桥梁与隧道工程]