| 抛物线拱的内力精确计算实用公式 |
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| 引用本文： | 李新平,陈湖.抛物线拱的内力精确计算实用公式[J].科学技术与工程,2010,10(6). |
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| 作者姓名： | 李新平 陈湖 |
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| 作者单位： | 华南理工大学土木与交通学院,广州,510640 |
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| 基金项目： | 广东自然科学基金项目(2008KA07)资助 |
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| 摘 要： | 采用结构力学的弹性中心方法,建立固端抛物线拱的力法正则方程,推导出在均布荷载作用和跨中集中荷载作用下的内力精确计算公式,并通过算例进行了比较验证。还分析了压弯刚度对拱推力的影响,指出忽略拱的轴向压缩变形的影响,可导致推力的计算误差达到30%。
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| 关 键 词： | 内力计算 弹性中心法 正则方程 抛物线拱 轴向压缩 |
| 收稿时间： | 2009/11/29 0:00:00 |
| 修稿时间： | 2009/11/29 0:00:00 |
Practical formula for accurate calculation of parabolic arch internal forces |
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| lixinping and chenhu.Practical formula for accurate calculation of parabolic arch internal forces[J].Science Technology and Engineering,2010,10(6). |
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| Authors: | lixinping and chenhu |
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| Institution: | College of Civil Engineering and Transportation/a>;South Chian University of Technology/a>;Cuangzhou 510640/a>;P.R.China |
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| Abstract: | Based on the elastic mechanics method,the generalized equation of parabolic arch with fixedend is established.The accurate calculation of internal forces under the uniformly distributed load and concentrated load is deduced,and an example is using to verify.The bending stiffness of arch is also analysed,point out that the thrust of the neglext of axial compression deformation,can lead to thrust calculation error 30%. |
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| Keywords: | internal force calculation method of elastic center generalized equation parabolic arch axial compression |
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