| 大跨度预应力混凝土变截面连续箱梁桥设计初探 |
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| 引用本文： | 童金虎,陈小兵.大跨度预应力混凝土变截面连续箱梁桥设计初探[J].交通标准化,2005(12):45-48. |
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| 作者姓名： | 童金虎 陈小兵 |
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| 作者单位： | 东南大学交通学院,江苏,南京,210096 |
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| 摘 要： | 大跨度预应力混凝土连续梁桥具有结构刚度大、变形小、动力特性好、伸缩缝少及行车舒适等优点，在国内得以广泛推广。但随着其的大量修建，在施工及运营阶段都程度不同地出现了梁体开裂的现象，因此在设计与施工中应充分考虑控制产生裂缝的问题。
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| 关 键 词： | 变截面连续梁 预应力钢束布置 预应力损失 灌浆 结构设计及施工 |
| 文章编号： | 1002-4786（2005）12-0045-03 |
| 收稿时间： | 2005-10-09 |
| 修稿时间： | 2005年10月9日 |
Design of Long-span P.C Continuous Box Girder Bridge with Variable Cross-section |
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| TONG Jin-hu,CHEN Xiao-bing.Design of Long-span P.C Continuous Box Girder Bridge with Variable Cross-section[J].Communications Standardization,2005(12):45-48. |
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| Authors: | TONG Jin-hu CHEN Xiao-bing |
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| Institution: | Transportation College, Southeast University, Nanjing 210096, China |
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| Abstract: | Because of advantages as big steel structure, small distortion, good dynamics, few flexed slots and comfort driving, the long-span P.C continuous box girder bridge is widely used inside. But there are cracks appearing in too many of buildings during the construction and operation, enough attention must be paid on crack control in design and constructions. |
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| Keywords: | continuous bridge with variable cross-section distribution of pretressing tendons loss of prestress grout structure design and construction |
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