浅析铁路桥面托架螺栓断裂影响因素  

Brief analysis on the influence factors for the fractures on the bracket bolts of railway bridge pavement

作　　者：董延东[1] 

机构地区：[1]朔黄铁路原平分公司

出　　处：《山西建筑》2010年第23期337-339,共3页Shanxi Architecture

摘　　要：以朔黄铁路清水河特大桥上行线步行板托架为例,通过静力计算和疲劳计算结果的比对,找出导致托架螺栓断裂的主要因素,并对其受力特点进行了分析,提出增加螺栓使用寿命的措施,进而保证桥面质量。With the walking plate bracket on up-link of Shuo-Huang railway Qingshui river extra large bridge as an example, through compar- ing the effect of static calculation and the effect of fatigue assessment, the thesis found out the main factors reducing the fracture of bracket bolts, and analyzed its stress characteristics, put forward the measures to increase the use life of the bolts, then ensured the quality of the bridge pavement.

关 键 词：托架螺栓 疲劳验算 动力系数 交变应力 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]