Release time:2016-03-31
Journal:Journal of Experimental Mechanics
Key Words:铁路隧道;基底病害;模型试验
Abstract:针对既有铁路隧道底部病害严重的现状,采用模型试验方法对该问题进行了研究。试验中主要对不同隧道铺底工况进行疲劳试验,以了解不同铺底工况疲劳裂纹的出现时间、扩展情况以及使用寿命等,同时对作用于铺底结构上的压应力及弯应力也进行了测试。试验结果表明,在机车轴重荷载作用下,作用于隧道铺底结构顶面的竖向压应力基本在0. 2MPa以内,而铺底底面的弯拉应力一般在0. 8MPa以上,铺底结构属于受弯破坏;
Co-author:王 伟, 彭立敏, 施成华
Indexed by:Unit Twenty Basic Research
Document Code:1001-4888(2005)01-0057-08
Discipline:土木工程
Document Type:J
Volume:20
Issue:1
Page Number:0057-0064
ISSN No.:1001-4888
Translation or Not:no
Date of Publication:2005-03-30
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