A STUDY FOR WAVE RESPONSE OF HORIZONTAL-ARCH BRIDGES WITH SEMI-SUBMERSIBLE FLOATING FOUNDATIONS

半潜式浮动基础水平拱桥波响应研究

• 批准号: 07455184
• 负责人: WATANABE Eiichi
• 金额: $ 4.93万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07455184/
• 关键词: floating bridge; hydro-elastic analysis; linear diffraction theory; wave response; potential theory; floating foundation; 線形回折波理論; 流力一弾性解析

This research has studied "Horizontal-arch bridges with semi-submersible floating foundations, " which the floating pontoon foundations are replaced by the semi-submersible floating foundations. In this study, the attention has been paid on the wave response characteristics, and the effect of the foundation shapes are examined to improve the wave-resistant design.The diffraction and radiation wave forces have been calculated by using axi-symmetric Finite Element Program for each floating foundation. The program enploys infinite elements for satisfying radiation condition at infinity. The bridge structure is modeled as a elastic beam, and the whole structural system has been analyzed by NASTRAN,general purpose F.E.M.program. The fluid-elastic structure system has successfully been analyzed by the procedure.The effect of the floating foundations have been examined on the condition that the immersed displacement of the foundation has the constant value. Numerical examples have shown that the semi-submersible type floating bridge has an improved characteristics. Moreover, the floating bridge that the Osaka municipal office is now planning at Maishima-Yumeshima channel is studied, and the transient response analysis in the time-domain considering nonlinearity of the fender and the elastic deformation of the bridge system has also been made.

这项研究研究了“水平拱形桥梁，具有半掩盖的浮动基础”，浮动浮桥的基础被半熟悉的浮动基础所取代。在这项研究中，已经对波浪响应特性进行了注意，并检查了基础形状的效果以改善抗波浪的设计。通过使用Axi-Memmore-Memortric Firitic Elemente元素程序计算了衍射和辐射波力每个浮粉底。该程序构成无限元素，以满足无穷大的辐射条件。桥结构被建模为弹性梁，并且已经通过Nastran，通用F.E.M. Program分析了整个结构系统。流体弹性结构系统已通过程序成功分析。已经检查了浮动基础的效果，即浸入基础的位移具有恒定值。数值示例表明，半熟悉的浮桥具有改进的特性。此外，研究了大阪市政办公室正在计划在Maishima-Yumeshima频道计划的浮桥，考虑到挡泥板的非线性以及桥梁系统的弹性变形，时间域中的瞬时响应分析也进行了研究。

项目成果

渡邊英一: "独立カラム型浮体基礎橋梁の波浪応答特性に関する研究" 海洋開発論文集. 12. 157-160 (1996)

渡边英一：《独立柱式浮动基础桥梁的波浪响应特性研究》海洋研究杂志12. 157-160（1996）。

渡邊 英一: "独立カラム型浮体橋梁の波浪応答特性に関する研究" 海洋開発論文集. 12. 157-160 (1996)

渡边英一：《独立柱式浮桥的波浪响应特性研究》海洋研究杂志12. 157-160（1996）。

渡邊 英一: "フェンダー特性ならびに弾性変形を考慮した実規模浮体式橋梁の波浪応答特性" 海洋開発論文集. 13. (1997)

Eiichi Watanabe：“考虑护舷特性和弹性变形的全尺寸浮桥的波浪响应特性”海洋开发杂志13。（1997）

Eiichi Watanabe: "Wave Response of Bridges with Independent Column-type Floating Foundations" Proc.of Civil Engineering in the Ocean. Vol.12. 157-160 (1996)

Eiichi Watanabe：“独立柱式浮动基础桥梁的波响应”Proc.of Civil Engineering in the Ocean。

Eiichi Watanabe: "Shape Effect of Floating Foundations to Wave Response of a Floating Bdridge" Proc.of Civil Engineering in the Ocean. Vol.11. 333-338 (1995)

Eiichi Watanabe：“浮式基础对浮桥波浪响应的形状效应”Proc.of Civil Engineering in the Ocean。