[1]王起才,薛彦瑾,张戎令,等.高速铁路无砟轨道简支槽型梁静载弯曲试验研究[J].西安建筑科技大学学报(自然科学版),2016,48(04):463-467,476.[doi:10.15986/j.1006-7930.2016.04.001]
　WANG Qicai,XUE Yanjin,ZHANG Ronling,et al.Static load bending experimental study on simply supported groove beam of ballastless track of high-speed railway[J].J. Xi’an Univ. of Arch. & Tech.(Natural Science Edition),2016,48(04):463-467,476.[doi:10.15986/j.1006-7930.2016.04.001]
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高速铁路无砟轨道简支槽型梁静载弯曲试验研究()
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西安建筑科技大学学报（自然科学版）[ISSN:1006-7930/CN:61-1295/TU]

卷:
48
期数:
2016年04期
页码:
463-467,476
栏目:
出版日期:
2016-08-31

文章信息/Info

Title:
Static load bending experimental study on simply supported groove beam of ballastless track of high-speed railway
文章编号:
1006-7930(2016)04-0463-05
作者:
王起才1; 2; 薛彦瑾1; 张戎令1; 2; 刘正楠1; 何志刚1; 王 冲1
(1. 兰州交通大学土木工程学院,甘肃 兰州 730070 ;2. 道路工程灾害防治技术国家地方联合工程实验室,甘肃 兰州 730070 )
Author(s):
WANG Qicai1; 2;  XUE Yanjin1;  ZHANG Ronling1; 2;  LIU Zhengnan 1;  HE Zhigang1;  WANG chong 1
(1. College of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; 2. Road and bridge engineering disaster prevention and control technology national local joint engineering la boratory, Lanzhou 730070, China)
关键词:
高速铁路; 槽型梁; 试验研究; 刚度; 抗裂度
Keywords:
high speed railway;  groove beam;  experimental study;  stiffness;  crack resistance
分类号:
TU375
DOI:
10.15986/j.1006-7930.2016.04.001
文献标志码:
A
摘要:
预应力混凝土槽型梁是一种新型桥梁结构，由道床板、主梁及端横梁等部分组成．对高速铁路无砟轨道16 m后张法预应力混凝土简支槽型梁1:1模型进行静载弯曲试验研究，该试验是国内首次进行的大规模实桥静载试验．对槽型梁的裂缝发展规律、变形特征、支座沉降、应力发展规律等基本受力性能进行分析．试验结果表明：槽型梁在静载作用下其裂缝宽度、刚度、抗裂情况和预应力度满足要求；槽型梁的应力变化符合平截面假定，且受力过程表现出一定的空间形态；试验桥梁的静载弯曲试验合格，其研究成果可为此类桥梁的设计与维护提供参考．
Abstract:
Prestressed concrete groove beam is a new bridge structure composed of the bed plate, main girder and end beam etc. The 1:1 model of 16m post tensioned prestressed concrete simply supported beam which is suitable for the ballastless track of high-speed railway was used to study the static load bending test. This experiment is the first large-scale real bridge static load test in China. In this paper, analyzed are the characteristics of crack distribution, deformation, bearing settlement, stress development and other basic mechanical properties of the beam. The experimental results showed that groove beam meet the requirements of the crack width, stiffness, cracking situation and prestress degree under static load. The stress variation of the groove beam accord s with the flat section assumption, and the stress process shows a certain space form. The static bending test of the test bridge is qualified, and the research results can provide reference for the design and maintenance of the bridge

参考文献/References:

References

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备注/Memo

备注/Memo:

收稿日期：2015-11-24 修改稿日期：2016-07-10

基金项目：长江学者和创新团队发展计划滚动支持项目(IRT_15R29)；铁道部科技研究开发计划项目(2012G011-A)；中国科协青年人才托举工程资助项目；陇原青年创新人才扶持计划资助项目

作者简介：王起才（1962?），男，博士，教授，主要从事桥梁工程与混凝土结构耐久性及新型工程材料的研究与开发； E-mail: wangqc@mail.lzjtu.cn

更新日期/Last Update: 2016-10-13