Collapse Behavior of Building Frames under Severe Earthquakes and Performance-based Seismic Design Method

强震下建筑框架倒塌行为及基于性能的抗震设计方法

• 批准号: 09305037
• 负责人: UETANI Koji
• 金额: $ 15.3万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 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-09305037/
• 关键词: Collapse Behavior; Performance-based Design; Limit-state Design; Seismic Resistant Design; Unstable Behavior

The purpose of this project is to disclose collapse behaviors of building frames under severe earthquakes and to develop a new performance-based seismic-resistant design method. The following results have been obtained in this project.1. It has been revealed that, when a building frame is subjected to severe earthquakes, deformation concentration could happen on lower few stones of a building frame. The conditions have been derived for suppression of such deformation concentration on lower few stories and for suppression of drifts. The validity of these conditions has been demonstrated through numerical response analysis.2. Static and dynamic experiments on three-story one-span steel frame models have been conducted under constant vertical loads and repeated horizontal loads. A new prediction method of initiation of bow-shaped deformation and initiation of drift of the vibration center has been constructed. It has been confirmed that these predictions coincide well with the experimenta … More l results.3. A new response analysis method has been developed which can simulate failure at beam ends and failure of hysteretic dampers. The effects of these failures on the seismic response of building frames have been disclosed via the newly developed numerical analysis program.4. A new method has been developed for finding an unstable equilibrium path in the load-displacement relation in the case where a fracture develops in a structure consisting of elastic brittle members. An analysis method of fracture development in a building frame has been presented and its stability criterion has been derived.5. A new performance-based seismic-resistant design method has been developed. The story stiffnesses of a shear building model have been designed so that the shear building model would exhibit a specified distribution of interstory drifts under design moderate earthquakes. The member size of the corresponding frame model has then been determined via reduced model-frame inverse transformation. Another design method under design major earthquakes has been proposed utilizing a newly developed equivalent linearization method. Less

本研究旨在揭示建筑框架结构在大震作用下的倒塌特性，并发展一种新的基于性能的抗震设计方法。本项目取得了以下成果：1.结果表明，在强烈地震作用下，框架结构下部的少数几块石头会发生变形集中。导出了抑制下部几层变形集中和抑制滑移的条件。通过数值响应分析验证了这些条件的有效性.对三层单跨钢框架模型进行了竖向恒载和水平重复荷载作用下的静动力试验。建立了一种新的弓形变形和振动中心漂移的预测方法。已经证实这些预言与实验结果吻合得很好。 ...更多信息 l结果。提出了一种新的反应分析方法，可以模拟梁端失效和滞回阻尼器失效。通过新开发的数值分析程序，揭示了这些破坏对框架结构地震反应的影响.本文提出了一种新的方法，用于在由弹性脆性构件组成的结构中，当裂纹扩展时，寻找载荷-位移关系中的不稳定平衡路径。提出了框架结构裂缝发展的分析方法，推导了框架结构裂缝发展的稳定性判据.提出了一种新的基于性能的抗震设计方法。剪切型建筑模型的层刚度设计应使剪切型建筑模型在设计中震作用下表现出特定的层间位移分布。然后通过简化模型-框架逆变换确定相应框架模型的构件尺寸。利用新发展的等效线性化方法，提出了设计大震作用下的另一种设计方法。少

项目成果

K.Uetani et al.: "Seismic design method based upon the symmetry limit theory for multi-story moment resisting frames" Proc.of the 2nd Int.Conf.of Stessa 97. 100-107 (1997)

K.Uetani 等人：“基于多层抗弯框架对称极限理论的抗震设计方法”Proc.of the 2nd Int.Conf.of Stessa 97. 100-107 (1997)

H.Tagawa et al.: "Seismic Response of Steel Frames Including Brittle Fractures at Hysteretic dampers" 5(20). 17-25 (1998)

H.Takawa 等人：“包括迟滞阻尼器脆性断裂在内的钢框架的地震响应”5(20)。

K.Uetani et al.: "Criteria for suppression of deformation concentration of building frames under severe earthquakes" Engineering Structures. Vol.20, Nos 4-6. 372-383 (1998)

K.Uetani 等：“强震下建筑框架变形集中抑制标准”工程结构。

松山憲太郎: "脆性梁の亀裂進展時の釣合経路と亀裂部回転バネモデル" 日本建築学会大会学術講演梗概集(構造). 475-476 (1998)

Kentaro Matsuyama：“脆性梁裂纹扩展期间的平衡路径和裂纹旋转弹簧模型”日本建筑学会会议记录（结构）475-476（1998）。

田川 浩: "履歴型ダンパーの破断を伴う鋼構造骨組の地震応答" 日本鋼構造協会鋼構造論文集. 5・20. 17-25 (1998)

Hiroshi Takawa：“伴随磁滞阻尼器破裂的钢结构框架的地震响应”日本钢结构协会，钢结构论文5·20（1998）。