| 火灾下大跨度悬索桥承重构件静力分析 |
| |
| 引用本文： | 廖鑫,余萌.火灾下大跨度悬索桥承重构件静力分析[J].中国市政工程,2021(2):30-34,123. |
| |
| 作者姓名： | 廖鑫 余萌 |
| |
| 作者单位： | 中国市政工程中南设计研究总院有限公司 |
| |
| 摘 要： | 以某通车运营的大型悬索桥为工程背景,建立桥梁热分析模型与有限元力学模型。通过热分析,模拟不同车辆火灾下大型悬索桥主要承重构件的温度变化过程。通过对小汽车、客车和货车火灾时对主缆的影响,分析桥梁主要承重构件的应力、挠度的变化情况,找出桥梁主要承重构件高温下力学性能退化规律。为大跨度悬索桥设计和安全运营提供技术依据。
|
| 关 键 词： | 大跨度悬索桥 承重构件 高温 力学性能 |
Static Analysis of Load-Bearing Members of Large-Span Suspension Bridge under the Fire |
| |
| LIAO Xin,YU Meng.Static Analysis of Load-Bearing Members of Large-Span Suspension Bridge under the Fire[J].China Municipal Engineering,2021(2):30-34,123. |
| |
| Authors: | LIAO Xin YU Meng |
| |
| Affiliation: | (China Municipal Engineering Central South Design&Research Institute Co.,Ltd.,Wuhan 430010,China) |
| |
| Abstract: | Taking a large suspension bridge opened to traffic as the engineering background,the thermal analysis model&finite element mechanics model of the bridge are established.Through thermal analysis,the temperature change process of the main load-bearing components of the large suspension bridge under different vehicle fires is simulated.Through the influence of the fire of cars,passenger cars&trucks on the main cable,the stress&deflection changes of the main load-bearing components of the bridge are analyzed,and the degradation law of the mechanical properties of the main load-bearing components of the bridge under high temperature is found.It provides technical basis for the design&safe operation of large-span suspension bridges. |
| |
| Keywords: | large-span suspension bridge load-bearing member high temperature mechanical properties |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
