单箱双室钢底板波形钢腹板组合箱梁扭转性能分析
U448.38; 为研究单箱双室新型钢底板波形钢腹板组合箱梁的扭转性能,基于乌曼斯基第二理论推导了箱梁的扭转微分方程和应力公式,结合纯扭转试验和有限元模型,检验理论公式的正确性.分析不同因素对箱梁扭转性能的影响,对比新型梁与传统混凝土底板梁的性能变化.结果 表明,同一测点理论值、有限元值与实测值吻合较好,差值大多在30％以内,整体变化规律一致.横隔板和加劲肋的一般布置方式对新型梁的有效抗扭刚度影响较小;当高宽比达到0.4时,截面正应力会产生明显变化.相对于传统梁,新型梁抗扭刚度减小8.58％,截面约束系数减小58.44％;相同扭矩下,新型梁跨中扭转角增大13.6％,最大扭转双力矩减小69.66...
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| Published in | 东南大学学报（自然科学版） Vol. 51; no. 5; pp. 740 - 746 |
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| Main Authors | , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
兰州交通大学土木工程学院,兰州730070%甘肃省交通规划勘察设计院股份有限公司,兰州730030
20.09.2021
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-0505 |
| DOI | 10.3969/j.issn.1001-0505.2021.05.002 |
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| Abstract | U448.38; 为研究单箱双室新型钢底板波形钢腹板组合箱梁的扭转性能,基于乌曼斯基第二理论推导了箱梁的扭转微分方程和应力公式,结合纯扭转试验和有限元模型,检验理论公式的正确性.分析不同因素对箱梁扭转性能的影响,对比新型梁与传统混凝土底板梁的性能变化.结果 表明,同一测点理论值、有限元值与实测值吻合较好,差值大多在30％以内,整体变化规律一致.横隔板和加劲肋的一般布置方式对新型梁的有效抗扭刚度影响较小;当高宽比达到0.4时,截面正应力会产生明显变化.相对于传统梁,新型梁抗扭刚度减小8.58％,截面约束系数减小58.44％;相同扭矩下,新型梁跨中扭转角增大13.6％,最大扭转双力矩减小69.66％,2种箱梁正应力区别明显,剪应力相差较小. |
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| AbstractList | U448.38; 为研究单箱双室新型钢底板波形钢腹板组合箱梁的扭转性能,基于乌曼斯基第二理论推导了箱梁的扭转微分方程和应力公式,结合纯扭转试验和有限元模型,检验理论公式的正确性.分析不同因素对箱梁扭转性能的影响,对比新型梁与传统混凝土底板梁的性能变化.结果 表明,同一测点理论值、有限元值与实测值吻合较好,差值大多在30％以内,整体变化规律一致.横隔板和加劲肋的一般布置方式对新型梁的有效抗扭刚度影响较小;当高宽比达到0.4时,截面正应力会产生明显变化.相对于传统梁,新型梁抗扭刚度减小8.58％,截面约束系数减小58.44％;相同扭矩下,新型梁跨中扭转角增大13.6％,最大扭转双力矩减小69.66％,2种箱梁正应力区别明显,剪应力相差较小. |
| Author | 成昭 李爱军 刘世忠 冀伟 秦翱翱 |
| AuthorAffiliation | 兰州交通大学土木工程学院,兰州730070%甘肃省交通规划勘察设计院股份有限公司,兰州730030 |
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| Author_FL | Li Aijun Liu Shizhong Cheng Zhao Qin Aoao Ji Wei |
| Author_FL_xml | – sequence: 1 fullname: Qin Aoao – sequence: 2 fullname: Liu Shizhong – sequence: 3 fullname: Ji Wei – sequence: 4 fullname: Li Aijun – sequence: 5 fullname: Cheng Zhao |
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| Keywords | 波形钢腹板;新型组合箱梁;扭转性能;纯扭转试验;有限元模型 |
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| Snippet | U448.38; 为研究单箱双室新型钢底板波形钢腹板组合箱梁的扭转性能,基于乌曼斯基第二理论推导了箱梁的扭转微分方程和应力公式,结合纯扭转试验和有限元模型,检验理论公式的正确性.分析不同因素对箱梁扭转性能的影响,对比新型梁与传统混凝土底板梁的性能变化.结果... |
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| Title | 单箱双室钢底板波形钢腹板组合箱梁扭转性能分析 |
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