Numerical and Experimental Study of Real Behavior of Steel Girder Bridge and Steel Bridge Pier
钢梁桥及钢桥墩真实性能的数值与试验研究
基本信息
- 批准号:15360244
- 负责人:
- 金额:$ 2.88万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2003
- 资助国家:日本
- 起止时间:2003 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Real Behavior and 3-Dimensional Finite Element Analysis of Steel Bridge1.3-dimensional finite element analyses of a steel I-girder bridge and a steel box-girder bridge were conducted. The results agreed well with the measured values in the steel bridges, confirming the validity of 3-dimensional finite element analysis of steel bridges.Shear Lag in Box Girder1.Unlike in beam theories, point/distributed load cannot be uniquely applied in 3-dimensional finite element analysis of a box girder. The different ways of applying the load would lead to different results.2.Formulas for stress concentration due to shear lag have been proposed.Load Distribution in Steel I-Girder Bridge1.In the conventional design procedure of a steel I-girder bridge, a slab is not supposed to distribute loads acting upon it. However, it has been shown that the slab would indeed play an important role in the load distribution.2.Correction factors have been proposed so as to consider the effect of load distribution of a slab in the conventional design procedure of a steel I-girder bridge.3.The validity of the correction factors has been confirmed for bridges of different sizes.Stress State of Bridge Pier of Circular Cross Section1.The location of a point of maximum stress varies and the point of maximum stress may not be at the edge of a flange.2.In the conventional design, a pier of circular cross section is replaced by that of rectangular cross section, which can introduce error in stress evaluation.3.The conventional design is based on the Okumura formula. However, the maximum stress due to that formula in general is smaller than that by 3-dimensional finite element analysis.4.The stress states obtained by 3-dimensional Unite element analysis agreed well with the measured values in a real bridge pier.
钢桥的实际行为和三维有限元分析对一座钢工字梁桥和一座钢箱梁桥进行了1.3维有限元分析。结果与钢桥实测值吻合较好,验证了钢桥三维有限元分析的有效性。与梁理论不同,点分布荷载不能唯一地应用于箱梁的三维有限元分析。2.提出了剪力滞引起的应力集中的计算公式。1.在钢工字梁桥的常规设计过程中,一般不考虑板对其进行荷载分配。2.在钢工字梁桥的常规设计中,为了考虑板的荷载分布的影响,提出了修正系数.3.对不同尺寸的桥梁,验证了修正系数的有效性.1.圆形截面桥墩的应力状态:1.最大应力点的位置是变化的,最大应力点可能不在翼缘的边缘.2.在常规设计中,用矩形截面的桥墩代替圆形截面的桥墩,这可能会在应力评估中引入误差。3.常规设计是基于Okumura公式。然而,该公式所产生的最大应力总体上小于三维有限元分析的结果。4.三维单元分析得到的应力状态与实桥实测值吻合较好。
项目成果
期刊论文数量(30)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Numerical study study of stress states near construction joint in two-plate-girder bridge with cast-in-place PC slab
现浇PC板二板梁桥施工缝附近应力状态数值研究
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Yamaguchi;E.;Fukushi;E;Hirayama;N.;Kubo;T.;Kubo;Y.
- 通讯作者:Y.
Numerical study of stress states near construction joint in two-plate-girder bridge with cast-in-place PC slab
- DOI:10.12989/sem.2005.19.2.173
- 发表时间:2005-01-30
- 期刊:
- 影响因子:2.2
- 作者:Yamaguchi, E;Fukushi, F;Kubo, Y
- 通讯作者:Kubo, Y
Treatment of constitutive equations of softening type in finite element analysis of steel members undergoing local buckling
局部屈曲钢构件有限元分析中软化型本构方程的处理
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Yamaguchi;E.
- 通讯作者:E.
On finite element mesh in nonlinear analysis of a steel circular-section bridge pier
钢圆断面桥墩非线性分析中的有限元网格
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Yamaguchi;E.;Oniki;K.;Nagamatsu;H.;Nannno;Y.
- 通讯作者:Y.
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YAMAGUCHI Eiki其他文献
YAMAGUCHI Eiki的其他文献
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{{ truncateString('YAMAGUCHI Eiki', 18)}}的其他基金
Safety Assessment of Steel Girder of Overpass Damaged by Collison
碰撞损坏立交桥钢梁的安全评估
- 批准号:
15K06184 - 财政年份:2015
- 资助金额:
$ 2.88万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Development of Method of Improving Inspectabilty of Existing Steel Girder Bridges
提高既有钢梁桥可检性方法的开发
- 批准号:
23560570 - 财政年份:2011
- 资助金额:
$ 2.88万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Fundamental study of structural analysis and back analysis of pile-foundation system
桩基体系结构分析及反分析基础研究
- 批准号:
11650488 - 财政年份:1999
- 资助金额:
$ 2.88万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Fundamental study of back analysis based on equivalent inclusion method
基于等效包含法的反分析基础研究
- 批准号:
09650530 - 财政年份:1997
- 资助金额:
$ 2.88万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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Analytical Study on Cyclic Behavior of Steel Bridge Pier with Two-Surface Model
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- 批准号:
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