| 基于有机玻璃简支梁桥模型的动载试验研究 |
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| 引用本文： | 沈伟成,李扬,谭勇.基于有机玻璃简支梁桥模型的动载试验研究[J].湖南工程学院学报(自然科学版),2014(2):82-85. |
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| 作者姓名： | 沈伟成 李扬 谭勇 |
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| 作者单位： | [1]新疆维吾尔自治区建筑设计研究院,乌鲁木齐830002 [2]湖南科技大学土木工程学院,湘潭411201 |
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| 摘 要： | 随着交通车辆的迅速增长,车辆行驶速度和载重量的较大提高,对公路桥梁的安全性能产生了较大的影响.运用相似理论,参照杨梅洲大桥建立了1∶10的有机玻璃简支梁桥模型,验证了模型的有效性;分别以不同的车速和载重量对模型的跨中应变进行动态测试,通过对采集数据的分析,得出以下结论：模型跨中动、静应变随荷载增加而线性增加;静应变比动应变略大;在一定的速度范围内,动应变与小车行驶速度关系不大.
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| 关 键 词： | 简支梁桥 相似理论 动载试验 |
Dynamic Load Experimental Study Based on Simple-supported Plexiglass Beam Bridge Model |
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| SHEN Wei-cheng,LI Yang,TAN Yong.Dynamic Load Experimental Study Based on Simple-supported Plexiglass Beam Bridge Model[J].Journal of Hunan Institute of Engineering(Natural Science Edition),2014(2):82-85. |
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| Authors: | SHEN Wei-cheng LI Yang TAN Yong |
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| Institution: | 1. Xinjiang Architectural Design Institute, Urumqi 830002, China; 2. School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China) |
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| Abstract: | As the quantity, running speed, payload of transportation vehicle increase quickly, it has great effects on safety performance of the highway bridge . Based on the similarity theory, this paper builds 1. 10 simple-supported plexiglass beam bridge model referring to Yang Mei Zhou Bridge, and testifies the va- lidity of the model. The model dynamic strain measurements on the midspan has been conducted at different speeds and loads. By analyzing the data acquired, we come to the conclusion that the model dynamic and static strain are roughly proportional to increasing load. Furthermore, static strain is slightly larger than the dynamic strain; within a certain speed range, the model dynamic deflection on the midspan and speed of vehicle model is not directly related. |
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| Keywords: | simple-supported beam bridge similarity theory dynamic loading test |
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