| 刚性路面设计中温度应力系数B_x计算 |
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| 引用本文： | 蒋应军,张伟宏,戴经梁.刚性路面设计中温度应力系数B_x计算[J].辽宁工程技术大学学报(自然科学版),2006(Z2). |
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| 作者姓名： | 蒋应军 张伟宏 戴经梁 |
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| 作者单位： | 长安大学特殊地区公路工程教育部重点实验室，许昌市公路管理局，长安大学特殊地区公路工程教育部重点实验室 陕西西安 710064，河南许昌 461000，陕西西安 710064 |
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| 摘 要： | 针对现行规范路面设计中存在的问题,利用3D有限元,在分析影响板边温度翘曲应力参数敏感性基础上,建立温度翘曲应力经验公式。考虑板厚内温度的非线性分布、混凝土模量与地基模量的徐变影响,对温度翘曲应力经验公式进行了修正,并导出了温度应力系数毋计算公式,该公式与规范中查图法相比,具有很高的精度,可供设计使用。
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| 关 键 词： | 道路工程 刚性路面 温度应力系数Bx |
Computing method of coefficient of thermal stresses in rigid pavement |
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| JIANG Ying-jun,Zhang wei-hong,DAI Jing-liang.Computing method of coefficient of thermal stresses in rigid pavement[J].Journal of Liaoning Technical University (Natural Science Edition),2006(Z2). |
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| Authors: | JIANG Ying-jun Zhang wei-hong DAI Jing-liang |
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| Abstract: | Aiming at the existing problems of the pavement design in present standard, a detailed three-dimensional finite element (3D FE) model was used to investigate the coefficient of thermal stresses (Bx). Based on considering an influence of thermal distribution of nonlinearity, the creep of cement concrete modulus and subgrade modulus on thermal stresses, the experiential formula for Bx was established through a great deal of calculation for different pavement constructions. The results indicate the experiential formula for Bx has very high precision. |
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| Keywords: | road engineering rigid pavement (cement concrete pavement) coefficient of thermal stresses |
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