| PC箱梁桥水化热温度控制跟踪分析及裂缝预测 |
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| 引用本文： | 杨爱民,等.PC箱梁桥水化热温度控制跟踪分析及裂缝预测[J].价值工程,2014(12):114-115. |
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| 作者姓名： | 杨爱民 |
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| 作者单位： | [1] 长安大学,西安710064 [2] 邢台市邢衡高速公路管理处,邢台054000 |
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| 摘 要： | 针对目前大跨度PC箱梁在施工过程中出现的水化热温度场导致出现裂缝现象,结合实际工程,综合考虑混凝土密度,比热容,热传导系数的温度时变效应,建立MIDAS/FEA水化热预测模型。对PC箱梁水化热温度场进行空间数值仿真,并与实测数据对比,预测施工水化热温度裂缝,提出温度裂缝控制方法。该成果对河北该地区大跨度箱梁桥施工具有一定的参考价值。
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| 关 键 词： | PC箱梁 水化热 温度场 裂缝控制 裂缝预测 |
PC Box-Girder Bridge Hydration Heat Temperature Control Tracking Analysis and Fracture Prediction |
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| YANG Ai-min,WU Xiao-guang,DING Yi.PC Box-Girder Bridge Hydration Heat Temperature Control Tracking Analysis and Fracture Prediction[J].Value Engineering,2014(12):114-115. |
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| Authors: | YANG Ai-min WU Xiao-guang DING Yi |
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| Institution: | 1Chang＇an University, Xi＇an 710064, China; 2Xingtai City Xingtai-Hengshui Expressway Management Department, Xingtai 054000, China ) |
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| Abstract: | In order to investigate the earlier temperature crack phenomenon of pier-on mass for concrete box girder during construction caused by hydration heat temperature,establishing the MIDAS/FEA model of the hydration heat. For PC box girder space hydration heat temperature field numerical simulation, and compared with the measured data,predict the construction hydration heat temperature crack, temperature crack control methods are put forward. The results of large span box girder bridge construction in the region have a certain reference value in Hebei province. |
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| Keywords: | PC Box-Girder hydration heat temperature field crack control fracture prediction |
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