| 连续梁桥平转施工过程稳定影响因素分析 |
| Analysis of Influencing Factors of Continuous Box girder Bridge in the Process of Horizontal Rotation |
| 投稿时间：2012-08-11 |
| 中文关键词:平转 稳定 风速 转速 墩高 |
| 英文关键词:horizontal rotation stability wind speed rotation speed pier height |
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| 中文摘要: |
| 如何确保桥梁平转过程的稳定是平转施工控制的关键，但目前关于桥梁平转过程中影响转体稳定因素的研究还不够系统和深入。为此，以长安高速公路微子立交桥为依托工程，建立数值分析模型，较全面地分析了转体速度、环境风速及墩高等参数对桥梁平转过程稳定的影响。研究表明：桥梁平转过程中的稳定不仅与转速和环境风速有关，而且受转体结构自振特性影响较大，因此应根据其自身结构动力特性判定其最不利的转速和环境风速，并加以避免。 |
| 英文摘要: |
| How to ensure the stability of the bridge in the process of horizontal rotation is the key to the construction control, but at present the study on the stable factors of swivel in the process of bridge horizontal rotation isn’t systemic and thorough enough. Based on Project of Wei zi Overpass of Chang’an Express Way, a corresponding numerical model is established, and influencing factors of the bridge in the process of horizontal, such as, rotation speed, environmental wind speed and pier height are analyzed. The results show that the stability of the bridge in the process of horizontal rotation is not only related to rotation speed and environmental wind speed, but also influenced by the swivel vibration characteristics, so the most unfavorable rotation speed and environmental wind speed should be judged and avoided according to the dynamic characteristics of the structure. |
| 张文学,黄荐,王秀平.连续梁桥平转施工过程稳定影响因素分析[J].石家庄铁道大学学报：自然科学版,2012,(4):30-33. |
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