兰新二线挡风板静载试验研究  

Static Loading Test Study on Windshield on Lanzhou-Xinjiang Second Railway

作　　者：田林杰[1] 王起才[1,2] 王元[1] 杜迎东 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070 [2]道桥工程灾害防治技术国家地方联合工程实验室,甘肃兰州730070

出　　处：《铁道建筑》2016年第10期42-45,共4页Railway Engineering

基　　金：长江学者和创新团队发展计划(IRT15R29)

摘　　要：新建兰州至乌鲁木齐第2客运专线,是世界上首条穿越大风区的高速铁路,设置合理可靠的挡风结构对于其运输安全有重大意义。本文依据钢筋混凝土结构计算的假设理论和计算方法,结合挡风板的受力特点,推导出挡风板的开裂弯矩、开裂时最大风荷载和跨中挠度计算公式,并采用合理的加载方式,对挡风板进行静载开裂破坏试验。试验值与计算值之间的对比结果表明,本文推导公式有较好精度,现场试验应用效果良好。An new second passenger dedicated railway cross Lanzhou to Urumqi is the world＇s first high speed railway crossing wind region,so setting reasonable and reliable wind structure for transport safety is of great significance.Based on the theory and calculation method of the calculation of reinforced concrete structure,combined with the force characteristics of the wind shield,the formulae for calculating the cracking moment,maximum wind load and the mid-span deflection of the wind shield were derived.The test of static cracking and failure of the windshield was carried out by using the reasonable loading method.The comparison between the measured and calculated results show that the formulae have a better precision field test has good effect.

关 键 词：挡风板 开裂弯矩 最大风荷载 挠度 静载试验 

分 类 号：U213.154[交通运输工程—道路与铁道工程]