| 多跨连续大跨度混凝土梁桥合理加载龄期分析 |
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| 引用本文： | 任更锋,胡景雨,王儒雅,王春生. 多跨连续大跨度混凝土梁桥合理加载龄期分析[J]. 混凝土, 2011, 0(8): 73-75,78. DOI: 10.3969/j.issn.1002-3550.2011.08.024 |
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| 作者姓名： | 任更锋 胡景雨 王儒雅 王春生 |
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| 作者单位： | 长安大学桥梁与隧道陕西省重点实验室,陕西西安710064) |
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| 基金项目： | 西部交通建设科技项目(200631822302-07); 河北省交通科技项目(R-080208) |
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| 摘 要： | 施工方法与施工过程的控制对混凝土梁桥在营运阶段的受力性能有很大影响.为分析混凝土的收缩徐变特性对混凝土梁桥的影响,统计分析了国内已建成的大跨径预应力混凝土连续梁桥的技术现状,确定了加载龄期是影响混凝土收缩徐变的主要因素,以某八跨混凝土连续梁桥为例,采用按龄期调整的有效模量代替混凝土弹性模量来考虑混凝土收缩徐变的影响,并...
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| 关 键 词： | 混凝土梁桥 受力性能 施工方法 收缩徐变 合理加载龄期 |
Research of rational loading age of long multi-span continuous concrete girder bridge |
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| REN Geng-feng,HU Jing-yu,WANG Ru-ya,WANG Chun-sheng. Research of rational loading age of long multi-span continuous concrete girder bridge[J]. Concrete, 2011, 0(8): 73-75,78. DOI: 10.3969/j.issn.1002-3550.2011.08.024 |
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| Authors: | REN Geng-feng HU Jing-yu WANG Ru-ya WANG Chun-sheng |
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| Affiliation: | REN Geng-feng,HU Jing-yu,WANG Ru-ya,WANG Chun-sheng (Key Laboratory for Bridge and Tunnel of Shaanxi Province,Chang'an University,Xi'an 710064,China) |
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| Abstract: | Construction method and construction control have great influence on the mechanical properties of concrete girder bridge in its ser-vice phase.On the basis of the statistics data of the existing long span prestressed concrete continuous girder bridges,it was proved that loading age was a major effect factor of concrete creep and shrinkage.Further taking an eight-span continuous concrete girder bridge as an example,the age-adjusted effective modulus was used to substitute for concrete elastic modular to cons... |
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| Keywords: | concrete girder bridge mechanical performance construction method creep and shrinkage rational loading age |
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