| 混凝土徐变模式对连续梁桥预拱度计算的影响 |
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| 引用本文： | 杨燎原. 混凝土徐变模式对连续梁桥预拱度计算的影响[J]. 中国市政工程, 2011, 0(1): 78-79. DOI: 10.3969/j.issn.1004-4655.2011.01.028 |
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| 作者姓名： | 杨燎原 |
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| 作者单位： | 广州市市政工程设计研究院,广东,广州,510060 |
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| 摘 要： | 混凝土徐变是混凝土连续梁桥预拱度计算的一项主要内容。从徐变模式出发,综合比较了国内1985年与2004年《公路钢筋混凝土及预应力混凝土桥涵设计规范》新旧桥规徐变模式的差异。以某高速公路上的1座大跨度连续梁桥为项目背景,建立有限元模型,对不同徐变模式下的预拱度计算结果进行对比,得到:1985年桥规徐变计算结果较2004年桥规大;预拱度的设置,宜遵循"宁高勿低"的原则。
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| 关 键 词： | 混凝土徐变 连续梁桥 预拱度 徐变模式 |
A Research of the Influence of Concrete Creep Mode on the Pre-camber Calculation of Continuous Beam Bridge |
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| YANG Liao-yuan. A Research of the Influence of Concrete Creep Mode on the Pre-camber Calculation of Continuous Beam Bridge[J]. China Municipal Engineering, 2011, 0(1): 78-79. DOI: 10.3969/j.issn.1004-4655.2011.01.028 |
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| Authors: | YANG Liao-yuan |
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| Affiliation: | YANG Liao-yuan (Guangzhou Municipal Engineering Design & Research Institute,Guangzhou 510060,China) |
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| Abstract: | Concrete creep is a main part of pre-camber calculation of concrete continuous beam bridge.Based on creep mode,the differences of Code for Designs of Highway Reinforced Concrete & Prestressed Concrete Bridges & Culverts in 1985 and in 2004 are compared comprehensively.Taking a large span continuous beam bridge on an expressway and building a related finite element model,the pre-camber calculation results under different creep modes are made a contrast,then,the conclusions show that 1) the creep calculation ... |
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| Keywords: | concrete creep continuous beam bridge pre-camber creep mode |
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