Earthquake Response Behavior and Seismic Design Method for R/C Structures Based on Influence of Underground Structure

基于地下结构影响的钢筋混凝土结构地震响应行为及抗震设计方法

• 批准号: 03650390
• 负责人: MUTSUYOSHI Hiroshi
• 金额: $ 1.34万
• 依托单位: SAITAMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650390/
• 关键词: Reinforced Concrete Bridge Pier; Ground; Underground; Response Analysis; Sway; Rocking; Seismic Design; 鉄筋コンクリ-ト構造物; 地盤と基礎

The influence of ground and an underground structure consisting of a footing and piles on whole response behavior of a reinforced concrete(R/C) superstructure under earthquakes has hardly been clarified. Theobjectives of this study are to make clear earthquake response behavior of R/C bridge piers considering dynamic properties of ground and underground structures and to contribute to the establishment of a reasonable seismic design method for R/C structures.Assuming the dynamic properties of the ground and the underground structure to be a sway and a rocking springs, dynamic response analysis of whole R/C bridge piers was carried out. As for the restoring-forcemodels, Hardin-Drnevich model was used for each spring and bi-linear degrading stiffiness model was used for the R/C pier.From the analyses, it is concluded as follows;(1)When the ground is soft, the displacement of the pier due to the underground structure becomes large though the response acceleration at the top of the pier becomes small.(2)When the yield displacement of the pier obtained from actual field tests is used for the analysis, the displacement of the pier due to the rocking is dominant.

地震作用下，地基和地下结构（由基础和桩组成）对钢筋混凝土（R/C）上部结构整体反应特性的影响还很难弄清楚。为了弄清考虑地基和地下结构动力特性的钢筋混凝土桥墩的地震反应特性，建立合理的钢筋混凝土结构抗震设计方法，本文将地基和地下结构的动力特性分别假设为摇摆弹簧和摇摆弹簧，对整个钢筋混凝土桥墩进行了动力反应分析。对于桥墩的内力模型，采用Hardin-Drnevich模型，对于R/C桥墩采用双线性刚度退化模型，分析结果表明：（1）当地基较软时，墩顶的反应加速度较小，但地下结构引起的墩顶位移较大;（2）当采用现场实测桥墩屈服位移进行分析时，由于摇摆引起的桥墩位移占主导地位。

项目成果

秋吉 郁子: "地盤と基礎を考慮した鉄筋コンクリート構造物の応答性状" 土木学会年次学術講演会講演概要集. 5. 706-709 (1992)

秋吉育子：“考虑土壤和地基的钢筋混凝土结构的响应特性”日本土木工程学会年度学术会议摘要5. 706-709 (1992)。

益子 直人: "構造物を構成する1部材を取り出して行う仮動的実験手法" 土木学会年次学術講演会講演概要集. 5. 708-709 (1992)

Naoto Masuko：“通过提取构成结构的单个构件进行的拟动力实验方法”日本土木工程学会年度学术会议摘要 5. 708-709 (1992)。

Akiyoshi, I., Mutsuyoshi, H., Saeki, M. and Machida, A.: "Response Behavior of R/C structure Based on Ground and Foundation" JSCE Annual Convention. 706-709 (1992)

Akiyoshi, I.、Mutsuyoshi, H.、Saeki, M. 和 Machida, A.：“基于地面和基础的 R/C 结构的响应行为”JSCE 年会。