包神铁路包头黄河大桥加固设计方案研究  

Research of Strengthening Design Scheme for Baotou Huanghe River Bridge on Baotou-Shenmu Railway

作　　者：张涛[1] 吴海涛[2] 

机构地区：[1]神华包神铁路有限责任公司,内蒙古包头014014 [2]中铁大桥局集团桥科院有限公司,湖北武汉430034

出　　处：《世界桥梁》2007年第3期69-71,共3页World Bridges

摘　　要：包神铁路包头黄河大桥检定研究中,其横向刚度不能满足规范要求,必须进行加固。加固设计主要采用横向自振频率作为主要依据。对结构的各个主要部分作了敏感性分析,并结合国内已有的研究成果,提出了加固方案。In the test and evaluation investigation of Baotou Huanghe River Bridge on Baotou-Shenmu Railway, it was found that the transverse stiffness of the Bridge could not meet the re- quirements in the codes and specifications, and it was determined that the Bridge must be strengthened and the strengthening design of the Bridge would be mainly based on the transverse natural vibration frequency. In this paper, the sensitivity analysis of various principal parts of the Bridge is made and the scheme for the strengthening is put forward with reference to the relevant current research findings in China.

关 键 词：桁架桥 横向刚度 自振频率 敏感性分析 桥梁加固 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]