A Study on Time Dependent Behavior of Cable-Socket Systems

电缆插座系统随时间变化的研究

• 批准号: 04452220
• 负责人: WATANABE Eiichi
• 金额: $ 2.43万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04452220/
• 关键词: Cable; Creep; Bond Strength; Zn-Cu Alloy; Slip-out; Socket; Size Effect; Multiple Cable Strands; 引き抜き耐力

It is essential for the design and maintenance of the cable-stayd bridges to know the long-term behavior due to the visco-elastic deformation of the cable strands, the cable sockets, the concrete members and the ground settelment at the supports. This research deals with the time-dependent behavior of cable strands and sockets, and a methodology to predict the long-term change of bridge geometry, particularly change of cable forces which is applied for construction management and maintenance after completion. First, the full-scale long-term tention tests of various cable systems are briefly reviewed and the visco-elastic deformation of the cable strands and sockets are summarized together with determination of viscoelastic constants. Secondly, the method to determine the visco elastic constants of cables and sockets either for short time prediction or long term prediction, and the finite element visco-elastic analysis together with the Laplace transformation are proposed for better prediction and general usage including several visco-elastic elements. Thirdly, the loading test for the bond-slip out behavior of cable strands from cable sockets, namely, Zinc-Copper poured socket, is carried out and its analytical prediction is made by the distinct element method.

斜拉桥的设计和维护必须了解由于索股、索槽、混凝土构件和支座处地面沉降的粘弹性变形而引起的长期行为。本研究探讨了索股和索座的时变特性，以及预测桥梁几何形状长期变化的方法，特别是适用于施工管理和竣工后维护的索力变化。首先，全面的长期张力试验的各种电缆系统的简要回顾和粘弹性变形的电缆股和插座一起确定的粘弹性常数进行了总结。其次，提出了拉索和承窝的粘弹性参数的确定方法，无论是短期预测还是长期预测，为了更好地预测和通用，提出了有限元粘弹性分析和拉普拉斯变换，包括几个粘弹性单元。第三，对电缆绞线从电缆插座（即锌铜浇注插座）中的粘结滑脱行为进行了加载试验，并采用离散元法对其进行了分析预测。

项目成果

狩野,正人: "斜張橋のクリープ・リラクセーション挙動とその予測" 鋼構造論文集. 1. 79-90 (1994)

Kano, Masato：“斜拉桥的蠕变松弛行为及其预测”《钢结构杂志》1. 79-90 (1994)。

渡邊英一: "鋼素線-亜鉛銅合金の付着特性に及ぼす側方拘束力の影響" 鋼構造年次報告論文集. 2. 479-487 (1994)

Eiichi Watanabe：“横向约束力对钢丝-锌-铜合金粘合性能的影响”钢结构年度报告论文集 2. 479-487 (1994)。

Kanou, M.: "Crrep-Relaxation Behavior of Cable-Stayd Bridges and its Predicfion" Steel Construction Engineering. Vol.1, No.3. (1994)

Kanou, M.：“斜拉桥的Crrep-松弛行为及其预测”钢结构工程。

狩野正人: "斜張橋のクリープ・リラクセーション挙動とその予測" 鋼構造論文集. 1. 79-90 (1994)

Masato Kano：“斜拉桥的蠕变松弛行为及其预测”《钢结构杂志》1. 79-90 (1994)。

邊英一: "鋼素線-亜鉛銅合金の付着特性に及ぼす側方拘束力の影響" 鋼構造年次論文報告集. 2. 479-487 (1994)

Eiichi Bebe：“横向约束力对钢丝-锌铜合金粘合性能的影响”钢结构年报2. 479-487（1994）。