| 混凝土箱梁空间受力梯度温度影响分析 |
| |
| 引用本文： | 邓成刚,高波,戴捷,杨鹏.混凝土箱梁空间受力梯度温度影响分析[J].现代交通技术,2014(1):22-25. |
| |
| 作者姓名： | 邓成刚 高波 戴捷 杨鹏 |
| |
| 作者单位： | 深圳高速公路股份有限公司;江苏省交通规划设计院;江苏省交通规划设计院;深圳高速公路股份有限公司 |
| |
| 摘 要： | 为研究梯度温度对大跨径宽幅预应力混凝土箱梁空间受力性能的影响,建立考虑施工阶段的空间实体有限元模型,分析箱梁挠度、纵横向应力等在梯度温度作用下的变化特点,同时比较新老规范在计算梯度温度时不同规定所产生的差别.研究表明,梯度温度对箱梁受力性能有较大影响,新规范较老规范保守.
|
| 关 键 词： | 预应力混凝土箱梁 梯度温度 空间分析 整体预制 单箱双室 |
Analysis of Temperature Gradient Effects on Mechanical Properties of Concreate Box Girder |
| |
| Deng Chenggang,Gao Bo,Dai Jie,Yang Peng.Analysis of Temperature Gradient Effects on Mechanical Properties of Concreate Box Girder[J].Modern Transportation Technology,2014(1):22-25. |
| |
| Authors: | Deng Chenggang Gao Bo Dai Jie Yang Peng |
| |
| Institution: | 1.Shenzhen Expressway Company Limited, Shenzhen 518026, China; 2.Jiangsu Provincial Communications Planning and Design Institute Co.,Ltd., Nanjing 210005, China ) |
| |
| Abstract: | In order to analyze mechanic properties of large span PC wide box girder under temperature gradient, finite element model is built to analyze the changing characteristics of girder deflection and stress along the whole construction stage. The calculation difference between codes in the past and at present is concerned. Study shows that temperature gradient greatly affects the mechanics of the box girder, and the result calculated based on the new code is more conservative. |
| |
| Keywords: | PC box girder temperature gradient spatial analysis full precast single-box double-cell |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《现代交通技术》浏览原始摘要信息 |
| 点击此处可从《现代交通技术》下载免费的PDF全文 |
