| 考虑温度自约束应力的圬工拱桥温度应力计算 |
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| 引用本文： | 郑晓燕,吴文清,王发国,方从贵,栾焕明.考虑温度自约束应力的圬工拱桥温度应力计算[J].合肥工业大学学报(自然科学版),1999(4). |
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| 作者姓名： | 郑晓燕 吴文清 王发国 方从贵 栾焕明 |
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| 作者单位： | 山东水利专科学校水工系，六安地区水电局 |
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| 摘 要： | 分析了拱桥拱顶截面下缘开裂的原因，指出了传统温度应力计算方法的不足，提出了既考虑温度变化引起的外约束应力又考虑截面温差不同引起的内约束应力的改进方法，并推出温度自约束应力计算公式。通过实例比较了两种方法的差别，得出温度自约束应力不容忽视的结论。
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| 关 键 词： | 拱桥 温差 温度自约束应力 应变 |
Temperature stress calculation of arch bridge considering temperature self restraint
stress |
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| ZHENG Xiao yan ,WU Wen qing ,WANG Fa guo ,FANG Cong gui ,LUAN
Huan ming.Temperature stress calculation of arch bridge considering temperature self restraint
stress[J].Journal of Hefei University of Technology(Natural Science),1999(4). |
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| Authors: | ZHENG Xiao yan WU Wen qing WANG Fa guo FANG Cong gui LUAN
Huan ming |
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| Institution: | ZHENG Xiao yan 1,WU Wen qing 1,WANG Fa guo 2,FANG Cong gui 2,LUAN
Huan ming 2 |
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| Abstract: | The crack cause of arch topsection under edge is analyized, and the
disadvantage of conventional temperature stress calculation method is pointed out.An
improvement method is put forward considering ont only the external restraint stress caused
by temperature change but also the internal restraint temperature stress resulting from
section temperature difference, and a calculation formula of temperature self restraint
stress is given.Example analysis shows that the temperature self restraint stress should not
be overlooked. |
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| Keywords: | arch bridge temperature difference temperature self restraint stress strain |
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