连续箱梁桥腹板斜裂缝的技术研究  

Technical Study on Web Inclined Crack of Continuous Box Beam Bridge

作　　者：张西丁[1] 潘志强[1] 

机构地区：[1]中国市政工程华北设计研究总院有限公司,天津市300074

出　　处：《城市道桥与防洪》2016年第3期72-75,10,共4页Urban Roads Bridges & Flood Control

摘　　要：连续箱梁桥的腹板斜裂缝是近年来箱型桥梁的突出问题,本文围绕箱梁腹板斜裂缝的影响因素和控制措施,从设计和施工管养两个方面进行了分析,提出了计算模式、腹板厚度、预应力筋布置形式、温度、混凝土收缩徐变、施工不当是影响箱梁腹板斜裂缝的主要因素,并分别对它们进行了分析,得出了箱梁腹板斜裂缝的控制措施。The web inclined crack of continuous box beam bridge is the prominent problem of box beam bridge in recent years. The article analyzes the influence factor and control measures for the web inclined crack of box beam from two aspects of design and construction, puts forward and separately analyzes the main factors of calculation mode, web thickness, pre-stressed bar layout type, temperature, concrete shrinkage creep and improper construction to influence the web inclined crack of box beam, and gives the control measures for the web inclined crack of box beam.

关 键 词：腹板斜裂缝 腹板厚度 预应力筋 温度应力 混凝土徐变 

分 类 号：U445.71[建筑科学—桥梁与隧道工程]