ELASTO-PLASTIC BUCKLING AND POST-BUCKLING ANALYSIS OF STIFF-ENNED CYLINDRICAL STEEL BRIDGE PIERS

刚性圆柱钢桥墩的弹塑性屈曲及屈曲后分析

• 批准号: 09650534
• 负责人: IURA Masashi
• 金额: $ 1.86万
• 依托单位: TOKYO DENKI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650534/
• 关键词: Cylindrical Steel Piers; Elasto-plastic Buckling; Ultimate Strength; Ductility; Cylindrical Shell; 補剛鋼製橋脚

The main concern of the present research is to develop the high ductility steel piers and also to study the post buckling behavior of the piers. Tests of cylindrical steel piers have been performed to study the effects of filled concrete and load history on the ultimate strength and the ductility of steel piers. The concrete-filled steel piers show good performance in the strength and the ductility. New parameters have been proposed to predict the ultimate strength of the concrete-filled steel piers. Theses parameters are available for predicting the position of local buckling. The load history has a great effect on the ductility of the piers. However, the effects of load history on the ultimate strength can be neglected. The post-buckling behavior is also influenced by the load history. These mechanical behavior is recovered by using the proposed one dimensional model which might be used for seismic design analysis.

目前研究的主要内容是开发高延性钢桥墩，并研究桥墩的后屈曲性能。进行了圆柱形钢桥墩的试验，研究了填充混凝土和荷载历史对钢桥墩极限强度和延性的影响。钢管混凝土桥墩在强度和延性方面表现出良好的性能。提出了预测钢管混凝土桥墩极限强度的新参数。这些参数可用于预测局部屈曲的位置。荷载历史对桥墩的延性有很大影响。然而，荷载历史对极限强度的影响可以忽略不计。后屈曲行为也受荷载历史的影响。这些力学行为可通过所提出的可用于抗震设计分析的一维模型来恢复。

项目成果

K.Suzuki, M.Iura and Y.Kumagai: "Ultimate strength of steel bridge piers with box sections" Proc.of 2nd Symp.on Nonlinear Numerical Analysis and its Application to Seismic Design of Steel Structures. 107-114 (1998)

K.Suzuki、M.Iura 和 Y.Kumagai：“箱形截面钢桥墩的极限强度”Proc.of 2nd Symp.on 非线性数值分析及其在钢结构抗震设计中的应用。

Katsuura,Kumagai.Iura: "Pseudo dynamic tests of steel bridge piers subjected to earthquake motions" Modeling and Simulation based Engineering. Proc.ICES. 685-690 (1998)

Katsuura，Kumagai.Iura：“地震作用下钢桥墩的伪动力测试”基于建模和仿真的工程。

Katsuura, Kumagai, Iura: "Pseudo dynamic tests of steel bridge piers subjected to earthquake motions" Modeling and Simulation based Engineering. Proc.ICES. 685-690 (1998)

Katsuura、Kumagai、Iura：“地震作用下钢桥墩的伪动力测试”基于建模和仿真的工程。

H.Katsuura, Y.Kumagai and M.Iura: "Pseudo dynamic tests of steel bridge piers subjected to earth-quake motions, Modeling and Simulation based Engineering" Proc.of ICES98. 685-690 (1998)

H.Katsuura、Y.Kumagai 和 M.Iura：“地震运动下钢桥墩的伪动力测试、基于建模和仿真的工程”Proc.of ICES98。

鈴木賢治: "角補強を有する箱型断面橋脚柱の実験的研究" 土木学会関東支部技術研究発表会. 第25回. (1998)

铃木贤治：《带角部加固的箱形断面桥墩柱的实验研究》日本土木学会关东分会技术研究报告第25期（1998年）。