A STUDY ON VERIFICATION OF SEISMIC SAFETY OF ROAD BRIDGES BY USING ACCELERATION-DISPLACEMENT RESPONSE SPECTRUM

利用加速度-位移响应谱验证公路桥梁抗震安全性的研究

• 批准号: 13650523
• 负责人: HIRAO Hiyoshi
• 金额: $ 2.18万
• 依托单位: The University of Tokushima
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650523/
• 关键词: ACCELERATION-DISPLACEMENT RESPONSE SPECTRUM; FORCE-SPLACEMENT-BASED SEISMIC DESIGN; MODIFIED PARK-ANG'S DAMAGE INDEX; DAMAGE CONTOROLED SUPECTRUM; SINGLE COLUMN RC PIER; PORTAL RIGID FRAME RC PIER; LEVEL 2 SIMULATED EARTHQUAKE; ROAD BRIDGE; 修正Park

Objective of this study is to develop a force-displacement-based seismic design method of road bridges by using the acceleration-displacement response spectrum (hereafter referred to as the S_a-S_d spectrum) of SDOF systems. The main results obtained in this study are summarized as follows1. The S_a S_d spectrum is affected by the required value D_r of modified Park-Ang's damage index, and the value of ductility capacity μ_u and restoring force model of a SDOF system. Namely the increasing value of D_r and μ_u makes the spectral values of acceleration S_a and displacement S_d larger. Also the value of S_a and S_d of Bi-linear model becomes larger than that of Q-hyst model. The S_a value also gets larger as the soil becomes harder in Type II earthquake and softer in Type I earthquake, while the value of S_d increases as the soil gets softer in both the Types I and II earthquakes2. Regression equation of the spectra of S_a and S_d for each earthquake Type and soil Group can be derived with relatively high accuracy as the function of natural period T and ductility capacity μ_u by using the spectra of elastic acceleration response S_<ae> required yield strength ratio R_r and displacement ductility factor μ_d3. The force-displacement-based seismic design method for a single-column RC pier and portal rigid frame RC pier is proposed by use of the derived S_a S_d spectrum, and the qualitative difference in the design results of single-column RC piers, between the proposed method and the ductility design method of the Japanese Specifications, is compared. As a result it becomes clear that the proposed method requires more lateral capacity and more ductility capacity, and the proposed method is the safer design than the ductility design method

这是通过使用加速度 - 置换式OnSE Spectrum（以下称为S_A-S_D Spectrum的SDOF系统中的加速度 - 位置）来开发道路桥的力量地震设计方法。 S_A S_D频谱受修改公园-NG损坏索引的必需值D_R，Ycapaceμ_U的值和SDOF系统的恢复力模型线性模型的s_d变成更大的tharger，它的值也变得更大，因为土壤在II型地震中更难，而I型地震中的tharger也更加柔和，而S_D的值则随着I类型和II地震的增长而增加对于地震类型和土壤组，可以通过使用弹性加速响应的光谱S_ <a> surdio s strengtio r_r和r_r andla，以自然周期t的功能得出。基于RC码头的锯齿式设计方法是由派生的S_D频谱所构成的，而单列RC Piers绳索的设计结果和日本规格的灰尘设计方法的定性差异很明显。侧囊蛋

项目成果

福本 年宏: "レベル2地震動に対する変位応答スペクトルに関する一研究"構造工学論文集. Vol.48A. 811-820 (2002)

Toshihiro Fukumoto：“2 级地震位移响应谱的研究”《结构工程杂志》第 48A 卷（2002 年）。

HIRAO KIYOSHI: "A STUDY ON SEISMIC DESIGN OF SIGLE RC PIERS BASED ON DEMAND SPECTRUM"CD-ROM OF EASEC-9 (9^<th> EAST ASIA-PACIFIC CONFERENCE ON STRUCTURAL ENGINEERING AND CONSTRUCTION). Paper No.1209 (6 Pages). (2001)

平尾清：《基于需求谱的单体RC桥墩抗震设计研究》EASEC-9（第九届东亚太平洋结构工程与建筑会议）CD-ROM。

HIRAO KIYOSHI: "A STUDY ON FORCE AND DISPLACEMENT BASED SEISMIC DESIGN OF SINGLE RC PIERS (in Japanese)"JOURNAL OF STRUCTURAI MECHNICS AND EARTHQUAKE ENGINEERING. No.724/I-62. 201-212 (2003)

HIRAO KIYOSHI：“基于力和位移的单 RC 桥墩抗震设计研究（日文）”结构力学与地震工程学报。

HIRAO KIYOSHI: "A FEW REMARKS ON INELASTIC ACCELERATION-DISPLACEMENT RESPONSE SPECTRA FOR LEVEL 2 EARTHQUAKES"CD-ROM OF EASEC-8 (8^<th> EASTASIA-PACIFIC CONFERENCE ON STRUCTURAL ENGINEERING, AND CONSTRUCTION). Paper No.1209 (6 Pages). (2001)

HIRAO KIYOSHI：“关于 2 级地震非弹性加速度位移响应谱的一些评论”EASEC-8（第八届东亚-太平洋结构工程和建筑会议）CD-ROM。

Kiyoshi Hirao: "A Few Remarks on Inelastic Acceleration-Displacement Response Spectra for Level 2 Earthquakes"8^<th> East Asia-Pacific Conference on Structural Engineering and Construction(EASEC-8). 1209(CD-ROM). 6 (2001)

Kiyoshi Hirao：“关于 2 级地震非弹性加速度位移响应谱的一些评论”第 8 届东亚太平洋结构工程与施工会议 (EASEC-8)。