| 兰新铁路第二双线大温差墩身防裂养护措施研究 |
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| 引用本文： | 范秀君,王起才,林雪.兰新铁路第二双线大温差墩身防裂养护措施研究[J].西部交通科技,2011(1):75-79. |
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| 作者姓名： | 范秀君 王起才 林雪 |
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| 作者单位： | 1. 兰州交通大学,甘肃兰州,730070
2. 东方学院,黑龙江哈尔滨,150086 |
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| 基金项目： | 铁道部科技研究计划项目(2010G019-A) |
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| 摘 要： | 裂缝是桥梁最常见的病害之一,对桥梁的耐久性、承载力、防水性能等都会产生较大影响。文章针对兰新铁路第二双线的工程实际情况,提出对桥墩施加包裹橡塑板的养护措施以有效防止内外温差过大而引起的表面裂缝。通过对试验墩的数据分析,以及运用大型空间有限元软件MIDAS Civil对包裹前和包裹后的墩身进行温度和应力分析,证明采用该养护方法可达到降低墩身中心与墩身表面的温差,预防墩身表面温度裂缝的产生。
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| 关 键 词： | 双柱式桥墩 裂缝 水化热 养护 |
Large Temperature Difference Maintenance Measurement on Bridge Piers of Second Double-line of Lanxin Railway |
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| FAN Xiu-jun,WANG Qi-cai,LIN Xue.Large Temperature Difference Maintenance Measurement on Bridge Piers of Second Double-line of Lanxin Railway[J].Western China Communication Science & Technology,2011(1):75-79. |
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| Authors: | FAN Xiu-jun WANG Qi-cai LIN Xue |
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| Institution: | FAN Xiu-jun1,WANG Qi-cai1,LIN Xue2(1.Lanzhou Communication University,Lanzhou,Gansu,730070,2.Dongfang College,Haerbin,Heilongjiang,150086) |
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| Abstract: | Cracks are one of the most common diseases associated with bridges.It damages the endurance,bearing capacity and waterproof ability of the bridge.Targeting at the current status of the construction taken place at the second double-line of Lanxin Railway,the article points out that by adding rubber wrap,it can effectively reduce the risks of having cracks in bridge piers due to large temperature difference.By conducting data analysis and use analytic softwares such as MIDAS Civil,the article tests pre-warp a... |
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| Keywords: | Double post bridge pier Crack Heat of hydration Maintenance |
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