| 大跨度预应力混凝土箱形梁桥悬臂施工中温度变形控制 |
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| 引用本文： | 杨雄伟,吴文明. 大跨度预应力混凝土箱形梁桥悬臂施工中温度变形控制[J]. 森林工程, 2003, 19(5): 55-56,36 |
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| 作者姓名： | 杨雄伟 吴文明 |
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| 作者单位： | 1. 云南省红河州交通局
2. 东北林业大学 |
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| 摘 要： | 温度变化对桥梁结构的变形影响很大。主桥箱梁内部温度场由于受到气温、日照等因素变化的影响而不断发生变化。就T构施工高程监控而言，主要是竖向温度场的变化引起T构施工各悬浇块标高的变化，即由日照引起的挠度。此项挠度值在施工中以实测的温度变形速度计入其影响。
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| 关 键 词： | 大跨度预应力混凝土箱形梁桥 悬臂施工 温度变形 控制 温度荷载 温度测量 |
Temperature deformation control in cantilever construction of box girder bridge |
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| Yang Xiongwei Wu Wenming. Temperature deformation control in cantilever construction of box girder bridge[J]. Forest Engineering, 2003, 19(5): 55-56,36 |
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| Authors: | Yang Xiongwei Wu Wenming |
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| Affiliation: | Yang Xiongwei Wu Wenming |
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| Abstract: | Alteration of temperature make the great effect to bridge structure. The temperature field in box girder bridge will change constantly because of the effects of sunshine and atmospheric temperature difference. To T-frame construction elevation control, it is principal that the alteration of vertical temperature field generate alteration of each cantilever block elevation in T-frame construction, that is to say, it is deflection caused sunshine. The deflection value reckoned in its effect in construction with temperature deformation velocity of actual measurement. |
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| Keywords: | Cantilever construction temperature deformation control |
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