| 异形钢桥面铺装受力特征研究 |
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| 引用本文： | 叶奋,宋卿卿,王晓军.异形钢桥面铺装受力特征研究[J].交通科技,2020(1):7-11. |
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| 作者姓名： | 叶奋 宋卿卿 王晓军 |
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| 作者单位： | 同济大学道路与交通工程教育部重点实验室;乌鲁木齐市政建设处 |
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| 基金项目： | 国家自然科学基金项目(E080703);乌鲁木齐市建设科技项目(201803)资助。 |
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| 摘 要： | 为研究异形钢桥面铺装受力特征,选取典型异形钢桥并采用不同建模方法进行分析,与现场加载试验对比后发现,曲桥模型更为精确。采用曲桥模型分析后发现异形钢桥面铺装的受力特征与常规钢桥面铺装存在较大区别,其受力特征为:随着铺装层弹性模量的增加,最大拉应变处的层顶拉应变值不断减小,层底拉应变不断增大,层底最大剪应力则先增大后减小,之后再增大。
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| 关 键 词： | 异形钢桥 桥面铺装 有限元模型 现场加载试验 受力特征 |
Study on Stress Characteristics of Special-shaped Steel Deck Pavement |
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| YE Fen,SONG Qingqing,WANG Xiaojun.Study on Stress Characteristics of Special-shaped Steel Deck Pavement[J].Transportation Science & Technology,2020(1):7-11. |
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| Authors: | YE Fen SONG Qingqing WANG Xiaojun |
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| Institution: | (The Key Laboratory of Road and Traffic Engineering,Ministry of Education,Tongji University,Shanghai 200092,China;Urumqi Municipal Construction Office,Urumqi 830000,China) |
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| Abstract: | In order to study the stress characteristics of special-shaped steel bridge deck pavement,a typical special-shaped steel bridge is selected and analyzed by different modeling methods.Compared with the field loading test,the curved bridge model is more accurate.Using this model,it is found that the stress characteristics of special-shaped steel deck pavement are quite different from those of conventional steel deck pavement.The stress characteristics are as follows:with the increase of elastic modulus of pavement,the top tensile strain at the maximum tensile strain decreases,and the bottom tensile strain increases.The maximum shear stress at the bottom of the deck increases first,then it decreases and increases later. |
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| Keywords: | special-shaped steel bridge bridge deck pavement finite element model field test stress characteristics |
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