工程爆破

2018, v.24(01) 8-12+19

[打印本页] [关闭]
本期目录(Current Issue) | 过刊浏览(Past Issue) | 高级检索(Advanced Search)

爆破冲击荷载下混凝土T梁桥实验
Experimental of concrete T beam bridge under blasting load

蔡路军;杜刚;高琴;刘令;
CAI Lu-jun;DU Gang;GAO Qin;LIU Ling;College of Science,Wuhan University of Science and Technology;CRPCE-Blasting Technology Research Center,Wuhan University of Science and Technology;

摘要(Abstract):

为了揭示爆破荷载作用下混凝土T梁桥的动态响应及破坏律,制作了两种不同纵向长度的混凝土T梁桥模型,测量T梁桥模型的应变值,以及爆炸前后模型的加速度值和声波速度,进行分析比较。研究表明,T梁桥模型的动态响应在横向1/4处比梁中心更敏感;纵向长度长的混凝土T梁桥在相同荷载作用下更容易发生破坏;混凝土T梁桥在存在损伤积累以后,梁肋板更容易先破坏;这为桥梁抢修和设计提供依据,提高其抗爆性。
In order to research the dynamic response and failure law of concrete T-beam bridge under blasting load,two kinds of concrete T-beam bridge models with different longitudinal lengths were made.Strain value,acceleration value and sound velocity of the model before and after the explosion of T-beam bridge are measured and analyzed.The study shows that the dynamic response of the T-beam model is more significant in the horizontal 1/4 direction than in the beam center and under the same load,the longer the longitudinal length,the concrete T-beam bridge is more likely to damage;what's more if there is accumulation of damage of concrete T-beam bridge,beam ribs are more likely to be destroyed firstly.These findings provide the basis for bridge repair and its improvement of antiknock performance.

关键词(KeyWords): 爆炸荷载;混凝土T梁桥;动态响应;抗爆性
blasting load;concrete T-beam bridge;dynamic response;antiknock performance

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 蔡路军;杜刚;高琴;刘令;
CAI Lu-jun;DU Gang;GAO Qin;LIU Ling;College of Science,Wuhan University of Science and Technology;CRPCE-Blasting Technology Research Center,Wuhan University of Science and Technology;

参考文献(References):

扩展功能
本文信息
服务与反馈
本文关键词相关文章
本文作者相关文章
中国知网
分享