| 混凝土徐变对连续刚构桥长期下挠的影响研究 |
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| 引用本文： | 解文成,李子特,徐艳昭.混凝土徐变对连续刚构桥长期下挠的影响研究[J].河南城建高等专科学校学报,2012(1):4-7. |
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| 作者姓名： | 解文成 李子特 徐艳昭 |
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| 作者单位： | [1]甘肃省道路桥梁与地下工程重点实验室,甘肃兰州730000 [2]兰州交通大学土木工程学院,甘肃兰州730000 |
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| 摘 要： | 混凝土徐变是影响大跨连续刚构箱梁桥跨中长期下挠的主要因素，挠度的不断增大影响了桥梁的行车舒适性和使用寿命。混凝土徐变对大跨连续刚构桥长期挠度的影响很大，以某七跨连续刚构桥为工程背景，建立有限元模型，分析采用不同规范、不同加栽龄期以及二期铺装等影响因素对大跨连续刚构桥长期下挠的影响。
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| 关 键 词： | 连续刚构桥 跨中长期下挠 收缩徐变 |
Study on effect of concrete creep of long-term deflection of continuous rigid frame bridge |
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| XIE Wen-cheng,LI Zi-te,XU Yan-zhao.Study on effect of concrete creep of long-term deflection of continuous rigid frame bridge[J].Journal of Henan Urban Construction Junior College,2012(1):4-7. |
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| Authors: | XIE Wen-cheng LI Zi-te XU Yan-zhao |
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| Affiliation: | 1. Key Laboratory of Road ＆ Bridge and Underground Engineering of Gansu Province, Lanzhou 730000, China; 2. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730000, China) |
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| Abstract: | Concrete creep is one of the main factors of influencing long-term midspan deflection of long-span continuous rigid frame of the existence of box girder bridge. The deflection on the increase affects the service life of the bridge and driving comfort. Concrete creep has more influence on long-term deflection of long-span continuous rigid, one of seven holes （87 ＋ 5 × 162 ＋ 87） m for the engineering background of long span continuous rigid frame bridges, Through establishing the finite element model, analyzing the factors of different specifications, loading-age and bridge paving layer, we analyze the effect of concrete creep of long-span continuous rigid frame bridge. |
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| Keywords: | continuous rigid frame bridges long-term midspan deflection shrinkage and creep |
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