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| 超载对桥梁构件受弯性能影响的试验研究 | |
| 引用本文： | 孙晓燕,黄承逵,赵国藩,窦玉秋. 超载对桥梁构件受弯性能影响的试验研究[J]. 土木工程学报, 2005, 38(6): 35-40 |
| 作者姓名： | 孙晓燕 黄承逵 赵国藩 窦玉秋 |
| 作者单位： | 1. 大连理工大学海洋与近海工程重点实验室;华北水利水电学院 2. 华北水利水电学院 3. 辽宁大通公路工程有限公司 |
| 基金项目： | 辽宁交通科技重点项目(0101) |
| 摘 要： | 本文结合12根钢筋混凝土梁的超载试验,主要针对不同的预加荷载幅值和不同超载次数对不同配筋率的钢筋混凝土桥梁受弯承载力性能的影响进行研究,分析超载对钢筋混凝土梁桥受弯性能的影响规律。试验结果表明超载对桥梁构件承载力降低作用不显著,但是超载作用后的桥梁构件裂缝和挠度明显增大,从而导致正常使用性能降低,后期失效风险增大。 |
| 关 键 词： | 超载 钢筋混凝土 梁桥 受弯性能 |
| 文章编号： | 1000-131X(2005)06-0035-06 |
| 修稿时间： | 2003-09-05 |
EXPRIMENTAL STUDY OF THE INFLUENCE OF TRUCK OVERLOADS ON THE FLEXURAL PERFORMANCE OF BRIDGE MEMBERS |
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| SUN Xiaoyan,Huang Chengkui,Zhao Guofan,Dou yuqiu. EXPRIMENTAL STUDY OF THE INFLUENCE OF TRUCK OVERLOADS ON THE FLEXURAL PERFORMANCE OF BRIDGE MEMBERS[J]. China Civil Engineering Journal, 2005, 38(6): 35-40 | |
| Authors: | SUN Xiaoyan Huang Chengkui Zhao Guofan Dou yuqiu |
| Affiliation: | Sun Xiaoyan 1,2 Huang Chengkui 2 Zhao Guofan 2 Dou yuqiu 3 |
| Abstract: | Based on the experiments of 12 reinforced concrete beams,the influence of truck overloads on highway bridge members[BF]'[BFQ]s flexural performance is evaluated.With the value and the number of times of overloading and the percentage of reinforcement as the main parameters,the damages caused by the overloads are studied.The test results generally indicate that the truck overloads on the bridge members do not cause dramatical strength decrease,but the increases in crack width and deflection of the beams are not neglectable.In this sense,the risk of failure of existing bridges under overloads is increased,and the serviceability degraded. |
| Keywords: | overloads reinforced concrete bridge flexural performance |
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