EFFECT OF LOADING RATE ON RESTORING FORCE CHARACTERISTIC OF RC PORTAL FRAME ANDFRAMED SHEAR WALL.

加载速率对RC门式框架和框架剪力墙恢复力特性的影响。

• 批准号: 12650590
• 负责人: ONO Masayuki
• 金额: $ 2.3万
• 依托单位: KINKI UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12650590/
• 关键词: shear wall without opening; shear wall with an opening; RC portal frame; loading rate; restoring force characteristics; shear strength; failure mode; overturning moment; 耐震壁; 耐力上昇率; 履歴ループ; 永年せん断耐力

(The person in charge : M. Ono, F. Esaki)The following conclusions reached at results of the experiments.1)The lateral load carrying capacity of shear walls without opening and with an opening subjected to the load at the high rate was lager than that at the slow rate. Its increased factor agreed well with the increased factor calculated by the observed strain rate. 2)The lateral load carrying capacity of shear walls without opening and with an opening subjected to monotonic lateral load was larger than that subjected to the reversed cyclic lateral load.3)The shear walls with an opening of the flexural failure and flexural-shear failure made series subjected to the reversed cyclic load at slow rate are changed to the shear failure made.4)The shear walls without opening of the flexural-shear failure made series are changed to the flexural failure mode.(The person of charge :A. Hiramatu)Restoring force characteristics of RC portal frames were obtained by the experimental tests on the specimens of 1/3 scale under both lateral loading and overturning moments of sinusoidal cyclic type having the several combinations of amplitudes and frequencies. And also earthquake responses of 7-story one bay pilot type RC buildings were calculated numerically using the idealized model of restoring force characteristics that had been constituted to represent peculiarity obseved on the experimental test results.The results from these calculaions indicate that the fluctuation of stiffness and strength of the building structures in response to a wide variation of the amount of overturning moment would cause the maximum response values of overturning moment to decrease. On the contrary, the fluctuation would cause the maximum response values of stoy drift to increase.

(The负责人：M. Ono，F.根据试验结果，得出如下结论：1）在高速率荷载作用下，开洞和不开洞剪力墙的侧向承载力均大于低速率荷载作用下的承载力。其增加因子与实测应变速率计算的增加因子吻合较好。2)在单调荷载作用下，开洞剪力墙和不开洞剪力墙的抗侧承载力均大于在低周反复荷载作用下的抗侧承载力; 3）在低周反复荷载作用下，开洞剪力墙的弯曲破坏和弯剪破坏均转化为剪切破坏; 4）在低周反复荷载作用下，开洞剪力墙的弯曲破坏和弯剪破坏均转化为剪切破坏;使系列剪切破坏模式转变为弯曲破坏模式。(The负责人：A。Hiramatu）通过1/3比例的钢筋混凝土门式刚架试件在不同幅值和频率组合的正弦循环荷载和倾覆力矩作用下的试验研究，获得了门式刚架的恢复力特性。以及7-本文根据试验结果建立了反映试验特性的恢复力特性理想模型，并对一栋单层开间试验型钢筋混凝土房屋进行了数值计算。计算结果表明，当倾覆力矩变化较大时，房屋结构的刚度和强度的波动将引起最大的破坏。倾覆力矩的响应值减小。相反，波动会导致stoy漂移的最大响应值增加。

项目成果

HIRAMATSU Akira: "Earthquake responses of building structures with tension steel bracings"REPORTS OF Kyushu Scchool of Engineering KINKI UNIVERSITY. NO.29. 105-113 (2001)

HIRAMATSU Akira：“张拉钢支撑建筑结构的地震响应”近畿大学九州工程学院的报告。

HIRAMATSU Akira: "Skeleton curve of RC portal frames under alternating cyclic overturning moment"SUMMARIES OF TECHNICAL PAPERS ANNUAL MEETING ARCHITECTURAL INSTITUTE OF JAPAN. 513-514 (2001)

HIRAMATSU Akira：“交替循环倾覆力矩下的 RC 门式刚架骨架曲线”日本建筑学会年会技术论文摘要。

KUBOTA Masakazu et al.: "Hysteresis response characteristic of R/C framed sheir walls without openings subjected to lateral load at constant rate Part5 Test series of specimens of shear failure"AIJ Kyushu Chapter Architectural Reseatch Meeting. NO.41. 605

久保田正一等人：“恒速侧向荷载作用下无开口的 R/C 框架护墙板的滞后响应特性第 5 部分剪切破坏试件试验系列”AIJ 九州分会建筑研究会。

松岡良智, 小野正行, 江崎文也, 久保田雅和: "RC無開口耐震壁の変形と強度に及ぼす戴荷速度の影響"コンクリート工学年次論文集. 第24巻2号. 517-522 (2002)

Yoshitomo Matsuoka、Masayuki Ono、Fumiya Ezaki、Masakazu Kubota：“加载速度对无开口 RC 剪力墙变形和强度的影响”，混凝土学会论文集，第 24 卷，第 2 期，517-522（2002 年）

久保田雅和, 小野正行, 江崎文也, 松岡良智: "一定速度載荷を受けるRC無開口耐震壁の履歴性状 その5 せん断破壊先行試験体の場合"日本建築学会研究報告九州支部(構造系). 第41号. (2002)

久保田正和、小野雅之、江崎文也、松冈芳智：《恒速荷载作用下的RC非开孔剪力墙的历史特性第5部分剪力破坏初步试验试件案例》日本建筑学会九州分会研究报告（结构）第20号41.（2002）