Effects of Random Occurrence of Brittle Failure on Seismic Reliability of Structural Systems

随机发生的脆性破坏对结构系统抗震可靠性的影响

• 批准号: 14550564
• 负责人: IDOTA Hideki
• 金额: $ 2.24万
• 依托单位: Nagoya Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550564/
• 关键词: Structural systems; Seismic reliability; Brittle failure; Stochastic method; Safety; Failure probability; 確率統計論的干渉; 鉄骨構造物; 耐震安全性; 脆性挙動; 塑性変形能力; 確率論的手法; エネルギー吸収能力; 地震応答解析; 信頼性設計

The purpose of this study is to discuss effects of random occurrence of brittle failure on seismic reliability of structural systems. The present study consists of the following two parts.1. Effects of random occurrence of brittle failure on maximum response displacement of structural systems.2. Statistical evaluation of energy absorption capacity of steel moment resisting frames considering uncertainties of member ductility.In the first part of this study, the following results are obtained.-System reliability under dynamic load decreases with increasing the occurrence probability of brittle failure. The decreasing rate of system reliability is more sensitive in the range of lower occurrence probability of brittle failure.-The structural system consists of both sensitive members and non-sensitive members. The sensitive member has large influence on system reliability, and non-sensitive member is not affectable.The results for the second part of this study are as follows.-This study proposes a conventional index for evaluating the lower limit of energy absorption capacity for the moment resisting steel frames.-The absorbed energy for safety limit is much sensitive to the member ductility than the absorbed energy for failure limit.

本研究的目的是探讨脆性破坏随机发生对结构体系抗震可靠度的影响。本研究主要由以下两部分组成：1。脆性破坏随机发生对结构体系最大响应位移的影响。考虑构件延性不确定性的钢抗弯矩框架吸能能力统计评定。在本研究的第一部分中，得到了以下结果。-系统在动荷载作用下的可靠性随着脆性破坏发生概率的增加而降低。在脆性破坏发生概率较低的范围内，系统可靠性的下降速率更为敏感。-结构体系由敏感构件和非敏感构件组成。敏感成员对系统可靠性影响较大，非敏感成员影响较小。本研究第二部分的结果如下：本文提出了一种评价抗弯矩钢框架吸能能力下限的常规指标。安全极限吸收能比破坏极限吸收能对构件延性更敏感。

项目成果

伊藤 貴紀, 井戸田秀樹: "脆性挙動のランダムな発生を考慮したシステムの信頼性解析 その5 システム信頼性への影響"日本建築学会学術講演梗概集. 構造I. 7-8 (2002)

Takanori Ito、Hideki Idoda：“考虑脆性行为随机发生的系统可靠性分析第 5 部分：对系统可靠性的影响”日本建筑学院学术讲座摘要 I.7-8 (2002)。

井戸田秀樹, 野田隆博, 小野徹郎: "実験データに基づく鋼構造溶接柱梁接合部の変形能力に関する統計量調査"日本建築学会東海支部研究報告集. 第41号. 345-348 (2003)

井户田英树、野田贵宏、小野哲朗：《基于实验数据的钢结构焊接柱梁接头变形能力的统计调查》日本建筑学会东海分会研究报告第41. 345-348号（2003年）

Hideki Idota, Kernji Yamazaki: "A Stochastic Study on Energy Absorption Capacity of Steel Moment Resisting Frames"Asian-Pacific Symposium on Structural Reliability and its Applications. (予定). (2004)

Hideki Idota、Kernji Yamazaki：“钢抗力矩框架能量吸收能力的随机研究”亚太结构可靠性及其应用研讨会（计划）（2004 年）。

Hideki Idota, Kenji Yamazaki: "A study on energy absorption capacity of steel frames considering uncertainty of member ductility"Journal of the Structure and Construction Engineering, AIJ. No.574. 189-195 (2003)

Hideki Idota、Kenji Yamazaki：“考虑构件延展性不确定性的钢框架能量吸收能力研究”结构与建筑工程学报，AIJ。

Kenji Yamazaki, takanori Ito, Hideki Idota: "System reliability analysis considering random occurrence of brittle behavior -Part 4 Hysteresis loop considering brittle behavior -."Summaries of technical papers of annual meeting, AIJ. Vol.B-1(Aug.). 103-104

Kenji Yamazaki、takanori Ito、Hideki Idota：“考虑脆性行为随机发生的系统可靠性分析 - 第 4 部分考虑脆性行为的磁滞回线 -”年会技术论文摘要，AIJ。