| 反复荷载作用下部分预应力混凝土梁桥长期挠度计算研究 |
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| 引用本文： | 汪磊,李世安,陈孔令,贺君.反复荷载作用下部分预应力混凝土梁桥长期挠度计算研究[J].公路,2011(6). |
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| 作者姓名： | 汪磊 李世安 陈孔令 贺君 |
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| 作者单位： | 云南省交通规划设计研究院;长安大学公路学院;同济大学桥梁工程系; |
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| 摘 要： | 部分预应力混凝土梁桥运营阶段实际长期挠度超过其设计值已成一个较为普遍的问题,对桥梁的使用性能和结构安全均造成严重隐患。通过对现有的部分预应力混凝土结构反复荷载作用下的长期挠度发展规律和计算公式进行分析比较,提出合理的计算模式和方法,并运用于一座实际桥梁,为部分预应力混凝土梁桥长期挠度计算和控制提供参考。
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| 关 键 词： | 混凝土箱梁桥 部分预应力 反复荷载 长期挠度 瞬时荷载挠度 残余挠度 |
A Study on Long-Term Deflection Calculation of Partial Prestressed Concrete Girder Bridge Under Cyclic Loading |
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| WANG Lei,LI Shi-an,CHEN Kong-ling,HE Jun.A Study on Long-Term Deflection Calculation of Partial Prestressed Concrete Girder Bridge Under Cyclic Loading[J].Highway,2011(6). |
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| Authors: | WANG Lei LI Shi-an CHEN Kong-ling HE Jun |
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| Institution: | WANG Lei1,LI Shi-an2,CHEN Kong-ling1,HE Jun3(1.Yunnan Broadvision Engineering Consultants,Kunming 650011,China,2.School of Highway,Chang'an University,Xi'an 710064,3.Department of Bridge Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | The long-term deflection of partial prestressed concrete girder bridge is getting more and more serious in terms of service performance and structure safety.The development laws and deflection calculation formulas from various existing examples and relevant tests are summarized,and more reasonable calculation method under cyclic loading for the partial prestressed concrete bridge is proposed to provide some useful reference for the calculation and control of long-term deflection of partial prestressed concr... |
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| Keywords: | partial prestressed cyclic loading long-term deflection instantaneous-load deflection residual deflection |
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