Study on Suspension Type Bridges Multi-Strand Cable with Economical and Aerodynamic Performances

悬索式桥梁经济气动多股缆索研究

• 批准号: 12555137
• 负责人: KUBO Yoshinobu
• 金额: $ 4.74万
• 依托单位: Kyushu Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555137/
• 关键词: Cable for cable-stayed bridge; Multi-stand cables; Helical-wire; Vortex-excited vibration; Skew angle; Aerodynamic vibration behavior; flow around body; flow visualization; 空力弾性振動; ギャロッピング; スパイラルケーブル,ヘルカルケーブル; 傾斜ケーブル

The present study aims at the development of multi-strand cable for a long suspension type bridge from viewpoint of both economical and aerodynamic performances. Stay cables of cable-stayed bridges and hanger cables of suspension bridges are known to have various types of vibration under wind action. In order to suppress the aerodynamic vibrations, many researches have been conducted. In the present study, multi-strand cable with helical wire is proposed from viewpoint of aerodynamic stability and of cost performance of manufacture, transportation and erection. The multi-strand cable is composed of small strands, therefore adding to the manufacturing small strands in the factory, small capacity is needed for transportation and erection devices regardless of required cable capacity. The outer shape of the multi-strand cable is uneven and the shape gives good performance to suppress the aerodynamic vibrations such as vortex-excited vibration and rain-wind-induced vibration. The experiments were conducted in the wind tunnel with test section 1780 x 790 mm of Kyshu Institute of Technology. The models used in the experiments were rigid models made by the aluminum pipe. And the model was elastically supported in heaving motion by four coil-springs. The observation of response and measuring surface pressure were conducted. It was clarified by measuring surface pressure of the cable that the multi-strand cable with helical wire can suppress the various aerodynamic vibrations. The mechanism of suppressing aerodynamic vibrations is seemed that the gap between grooves on multi-strand and helical wire makes the surface pressure appropriately smooth for suppressing vibrations.

本研究的目的是从经济和空气动力学性能的角度开发多链电缆，以开发长悬架类型的桥梁。众所周知，悬挂桥的缆线和吊架电缆在风能动作下具有各种类型的振动。为了抑制空气动力学振动，已经进行了许多研究。在本研究中，从空气动力学稳定性以及制造，运输和勃起的成本性能的角度提出了带有螺旋线的多链电缆。多链电缆由小链组成，因此增加了工厂的制造小链，无论需要多么必要的电缆容量，运输和勃起设备都需要少量容量。多链电缆的外部形状不均匀，并且形状具有良好的性能，可以抑制空气动力学振动，例如涡流启用的振动和雨水引起的振动。实验是在风洞中使用Kyhu技术研究所的测试部分进行的。实验中使用的模型是铝管制造的刚性模型。并且该模型在四个线圈弹簧中受到弹性支持。进行了反应和测量表面压力的观察。通过测量电缆的表面压力来阐明，用螺旋线的多链电缆可以抑制各种空气动力学振动。抑制空气动力振动的机制似乎是，多链和螺旋线上的凹槽之间的缝隙使表面压力适当平滑以抑制振动。

项目成果

Kichiro KIMURA, Hideyuki TANAKA, Yoshinobu KUBO: "Aerodynamic Characteristics of Multi-Strand Cable with Helical Wire for Cable-Stayed Bridges in Skew Wind"Proc.of the Fourth International Symposium on Cable Dynamics. No.4. 51-58 (2001)

Kichiro KIMURA、Hideyuki TANAKA、Yoshinobu KUBO：“斜风斜拉桥多股螺旋缆索的空气动力特性”第四届国际缆索动力学研讨会论文集。

田中英之, 久保喜延, 木村吉郎, 山口栄輝, 及川孝一: "水平偏角をつけたマルチストランドケーブルの空力特性およびヘリカルストランド効果"土木学会論文集. No.689/I-57. 117-125 (2001)

Hideyuki Tanaka、Yoshinobu Kubo、Yoshiro Kimura、Eiki Yamaguchi、Koichi Oikawa：“具有水平偏转角的多股电缆的空气动力特性和螺旋股效应”日本土木工程师学会会刊第 689/I-57 号。 -125 (2001)

田中英之, 久保喜延, 山口栄揮, 及川孝一: "ヘリカルストランドの有無によるマルチストランドケーブル空力応答特性および周辺流れ特性"土木学会論文集. No.661/I-53. 133-140 (2000)

Hideyuki Tanaka、Yoshinobu Kubo、Hideki Yamaguchi、Koichi Oikawa：“带和不带螺旋股的多股电缆的空气动力学响应特性和周边流动特性”日本土木工程师学会会刊第 661/I-53-号。 140 (2000)

礒部敏靖, 久保喜延, 加藤九州男, 田中英之, 及川孝一: "マルチストランドケーブルの空力応答特性"土木学会第55回年次学術講演会講演概要集. 第55,1-B. 286-287 (2000)

Toshiyasu Isobe、Yoshinobu Kubo、Kyushuo Kato、Hideyuki Tanaka、Koichi Oikawa：“多股电缆的空气动力响应特性”日本土木工程师学会第 55 届学术会议摘要第 55,1-B。 287 (2000)

田中英之, 久保喜延, 木村吉郎, 加藤九州男, 礒部敏靖, 及川孝一: "水平偏角つきマルチストランドケーブルの空力特性"土木学会第56回年次学術講演会講演概要集. 第56, 1-B. 776-777 (2001)

Hideyuki Tanaka、Yoshinobu Kubo、Yoshiro Kimura、Kyushuo Kato、Toshiyasu Isobe、Koichi Oikawa：《具有水平偏转角的多股缆线的空气动力特性》第56届日本土木工程学会学术年会摘要第56期， 1-B.776-777 (2001)