| 水管冷却作用下岩锚梁混凝土施工温度应力分析 |
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| 引用本文： | 董迎娜,黄强,陈守开,郭磊.水管冷却作用下岩锚梁混凝土施工温度应力分析[J].人民长江,2011,42(19):42-46. |
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| 作者姓名： | 董迎娜 黄强 陈守开 郭磊 |
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| 作者单位： | 1. 洛阳理工学院土木工程系,河南洛阳,471023
2. 华北水利水电学院水利学院,河南郑州,450011 |
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| 摘 要： | 针对水电站地下厂房中岩锚梁混凝土结构施工期易开裂的问题及其结构特点，采取了水管冷却和表面保温相结合的温控措施。依托某岩锚梁工程，利用考虑水管冷却的不稳定温度场和应力场的有限元方法，对典型岩锚梁施工段进行仿真计算，从温度、第一主应力以及抗裂安全度3方面分析了水管冷却和表面保温措施的温控效果。结果表明，水管冷却和表面保温相结合的温控措施能够把岩锚梁施工期应力控制在允许范围内，使其满足允许抗裂安全度，并认为运用抗裂安全度的方法评价混凝土结构的抗裂能力更为合理。
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| 关 键 词： | 水管冷却 表面保温 温度场 应力场 抗裂安全度 岩锚梁 |
Analysis on temperature stress of rock anchor beam concrete under influence of pipe cooling |
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| DONG Yingna,HUANG Qiang,CHEN Shoukai,GUO Lei.Analysis on temperature stress of rock anchor beam concrete under influence of pipe cooling[J].Yangtze River,2011,42(19):42-46. |
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| Authors: | DONG Yingna HUANG Qiang CHEN Shoukai GUO Lei |
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| Affiliation: | DONG Yingna1,HUANG Qiang1,CHEN Shoukai2,GUO Lei2(1.Department of Civil Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China,2.College of Water Resources,North China University of Water Resources and Electric Power,Zhengzhou 450011,China) |
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| Abstract: | Aiming at the problem that the rock anchor beam is sensitive to crack in the construction period and its structure features,the temperature control measure combined pipe cooling with superficial thermal insulation is adopted to improve the anti-crack performance of rock anchor beam concrete.Based on the rock anchor beam of a project,a numerical simulation of the construction section of typical rock anchor beam is conducted by using FEM and considering the unstable temperature field and stress field.The temp... |
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| Keywords: | pipe cooling superficial thermal insulation temperature field stress field anti-cracking safety rock anchor beam |
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