ADVANCED EQUI-LINEARIZED TECHNIQUE FOR EARTHQUAKE RESPONSE ANALYSIS OF SOFT LAYERED GROUND

软层状地基地震响应分析的先进等线性化技术

• 批准号: 07650543
• 负责人: SUGITO Masata
• 金额: $ 1.66万
• 依托单位: GIFU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 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-07650543/
• 关键词: Earthquake response analysis; Equi-linearized technique; Multiple reflection theory; Ground motion amplification; Shear modulus and damping; 軟弱地盤; ひずみ依存性; 非線形増幅特性; 地盤震動; 応答解析; 非線形増幅; 地震動

A method is developed for equi-linearized seismic response analysis of multi-layred ground including frequency dependent effect of shear modulus and damping on ground motion amplification. The frequency dependent equivalent strain in proportion to the Fourier amplitude of shear strain time history is defined for evaluation of shear modulus and damping factor depending on the frequency contents. The method is examined in the strong motion array records and minutely surveyed soil profile at array observation station located at very soft ground. Superiority of the present method to the conventional equi-linearized method is demonstrated especially in case of strong ground motion level and soft ground condition.A comprehensive Fortran program for the proposed technique was completed, which can be used under the Windows 95 system.

本文提出了一种考虑剪切模量和阻尼对地震动放大效应频率依赖性的多层地基等线性化地震反应分析方法。定义了与剪切应变时程傅立叶幅值成比例的频率相关等效应变，用于评估取决于频率内容的剪切模量和阻尼因子。该方法已在极软地基台阵观测站的强震动记录和土壤剖面的精密测量中得到验证。在此基础上，编制了适用于Windows95环境下的Fortran程序，并对该方法进行了验证。

项目成果

杉戸真太: "Correction of Orientation Error of Borehole Strong Motion Array Records obtained during the South Hyogo Earthquake of Jan.17,1995" 土木学会論文集. Vol.12 No.3. 51-63 (1996)

Shinta Sugito：“1995 年 1 月 17 日兵库县南部地震期间获得的钻孔强动阵列记录的方向误差的校正”日本土木工程师学会学报第 12 卷第 3 期（1996 年）。

岡二三生: "大口径ラバル型サンドサンプラーの開発" 第31回地盤工学研究発表会論文集. (発表予定). (1996)

Fumi Oka：“大直径拉瓦尔型砂采样器的开发”第 31 届岩土工程研究会议论文集（预定报告）（1996 年）。

杉戸真太: "Frequency-Dependent Equivalent Strain for Equi-Linearized Technique" Proc.of IS-Tokyo '95. 655-660 (1995)

Shinta Sugito：“等效线性化技术的频率相关等效应变”Proc.of IS-Tokyo 95 (1995)。

沢田勉: "A Localized Identification of Dynamic Soil Properties of Sub-Surface Layers in Ground by Veltical Array Records" Proc.of First Int.Conference on Earthquake Geotechnical Eugineering. 1. 493-498 (1995)

Tsutomu Sawada：“通过垂直阵列记录对地下地下层动态土壤特性的局部识别”Proc.of First Int.Conference on Earthquake Geotechnical Eugineering 1. 493-498 (1995)。

杉戸真太: "GISの技術を取り入れた地震防災システムに関する基礎的検討" 第32回地盤工学研究発表会概要集. (印刷中). (1997)

杉户新太：《结合GIS技术的地震灾害预防系统的基础研究》第32届岩土工程研究会议摘要集（正在出版）。