| 新型桥塔自立状态动力特性分析 |
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| 引用本文： | 张文明.新型桥塔自立状态动力特性分析[J].山东建筑工程学院学报,2009(2). |
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| 作者姓名： | 张文明 |
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| 作者单位： | 同济大学土木工程防灾国家重点实验室; |
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| 基金项目： | 国家自然科学基金委重大研究计划重点研究项目(90715039);;西部交通建设科技项目(200631849426) |
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| 摘 要： | 某独塔斜拉桥桥塔装有横撑和风缆,是一种新型桥塔,基于ANSYS软件对其自立状态下的整体动力特性和风缆动力特性进行了计算,并分析了它们的影响因素。结果表明,横撑和风缆增大了桥塔横桥向弯曲频率和扭转频率,而略微减小了顺桥向弯曲频率;风缆是否分段建模对桥塔低阶振型和频率没有影响,而对高阶振型和频率有影响;桥塔频率对风缆初张力不敏感;风缆频率对风缆初张力比较敏感,而且随着初张力的增大而逐渐增大,但频率增幅逐渐减小。
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| 关 键 词： | 斜拉桥 桥塔自立状态 动力特性 横撑 风缆 |
Analysis of dynamic property of a new type pylon in free-standing state |
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| ZHANG Wen-ming.Analysis of dynamic property of a new type pylon in free-standing state[J].Journal of Shandong Institute of Architecture and Engineering,2009(2). |
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| Authors: | ZHANG Wen-ming |
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| Affiliation: | State Key Laboratory for Disaster Reduction in Civil Engineering;Tongji University;Shanghai 200092;China |
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| Abstract: | Based on a cable-stayed bridge with single pylon,dynamic property of a new type of pylon with wale and wind cable in free-standing state is calculated via ANSYS software,and key effective factors of dynamic property are analyzed.The research results show that wale and wind cable raise bending frequency in transverse direction and torsional frequency,but reduce bending frequency in longitudinal direction slightly.In the finite element model,whether the wind cable is segmented or not does not have effect on l... |
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| Keywords: | cable-stayed bridge free-standing pylon dynamic property wale wind cable |
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