DYNAMIC CHARACTERISTICS OF REINFORCED CONCRETE MEMBERS UNDER COMBINED STRESS CONDITION SUBJECTED TO CYCLIC AXIAL FORCE, TWO-AXIS BENDING, AND TORSION

循环轴力、两轴弯扭复合应力条件下钢筋混凝土构件的动力特性

• 批准号: 17360215
• 负责人: OTSUKA Hisanori
• 金额: $ 10.96万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360215/
• 关键词: REINFORCED CONCRETE MEMBERS; CYCLIC LOADING OF AXIAL FORCE, BENDING AND TORSION; REDUCTION RATIO OF TORSIONAL STIFFNESS; EQUIVALENT DAMPING RATIO; NONLINEAR FINITE ELEMENT ANALYSIS; RESTORATION CHARACTERISTICS; 変動軸力; 履歴特性; 複合応力状態; 曲げ-ねじり相関曲線; 二軸

During 2002 to 2004, the experimental research to clarify the hysteresis of reinforced concrete members subjected to axial forces, bending and torsional moments was conducted. Experimental parameters are constant axial forces, pitch of hoop lateral ties, and ratios of bending load to torsional load.During 2005 to 2007, the experimental research was continued for concrete members subjected to two-axis bending moment, cyclic axial loading, and pure torsion. Furthermore finite element analysis is applied for theses experimental works. The followings are main results.1) The effect of two-axis bending becomes remarkable for cases in which the bending are superior than torsion, therefore it would be not adequate if we use the bending -torsion interaction curve made by one- axis loading test data for the two- axis loading case.2) The effect of cyclic axial loading clearly appear in the shape of hysteresis loop and skeleton curve. For the case in which bending and axial force increase simultaneously, the shape of hysteresis become sharp and maximum strength become large.3) According to the increasing of damage torsional rigidity and damping ratios changed. These values are formulated using results of 30 test specimen to use the equivalent linear analysis.4) Nonlinear finite element analysis is successfully used for the simulation of load and deflection curves.5) The skeleton for the case of the cyclic pure torsion proposed in previous research is not sufficient and accurate. So new skeleton is proposed using the test results obtained by our experiments.

2002年至2004年期间，开展了钢筋混凝土构件在轴力、弯矩和扭矩作用下的滞后现象的实验研究。试验参数为恒定轴力、环向拉杆节距、弯曲荷载与扭转荷载之比。2005年至2007年，继续对混凝土构件进行两轴弯矩、循环轴向荷载和纯扭转试验研究。 。此外，这些实验工作还应用了有限元分析。主要结果如下： 1）当弯曲优于扭转的情况下，两轴弯曲的效果变得显着，因此仅使用一轴加载试验得出的弯扭相互作用曲线是不够的。两轴加载情况下的数据。2）循环轴向加载的影响清楚地表现为磁滞回线和骨架曲线的形状。对于弯曲力和轴向力同时增加的情况，滞后形状变得尖锐，最大强度变大。3）随着损伤的增加，扭转刚度和阻尼比发生变化。这些值是使用 30 个测试样本的结果使用等效线性分析得出的。4) 非线性有限元分析成功地用于载荷和挠度曲线的模拟。5) 先前提出的循环纯扭转情况的骨架研究不够充分和准确。因此，利用我们的实验获得的测试结果提出了新的骨架。

项目成果

軸力,曲げ及びねじりを同時に受けるRC部材の剛性低下率と等価減衰定数の定式化

同时受轴力、弯扭作用的钢筋混凝土构件的刚度折减率和等效阻尼常数的计算

• 发表时间: 2008
• 作者: 白石昭寿;大塚久哲;西祐樹;浦川洋介;宇山 友理・秦 逸平・大塚 久哲
• 通讯作者: 宇山 友理・秦 逸平・大塚 久哲

FINITE ELEMENT ANALYSIS OF RC COLUMNS SUBJECTED TO AXIAL FORCES AND MONOTONIC / CYCLIC TORSION

承受轴向力和单调/循环扭转的 RC 柱的有限元分析

• 发表时间: 2007
• 作者: I.;HATA;T.;UYAMA;H.;OTSUKA
• 通讯作者: OTSUKA

COMPOSITE STRESS EXPERIMENTS ON RC MEMBERS CONSIDERING TWOAYTS RENDING

考虑二次撕裂的 RC 构件复合应力实验

• 发表时间: 2006
• 作者: A.;SHIRAISHI;H.;OTSUKA;Y.;NISHI;Y.;URAKAWA
• 通讯作者: URAKAWA

断層変位を受けるPC連続ラーメン橋の耐震性能に及ぼすねじり剛性の評価の影

断层位移作用下扭转刚度评估对PC连续刚构桥抗震性能的影响

• 发表时间: 2007
• 作者: 白石昭寿;大塚久哲;西祐樹;浦川洋介;宇山 友理・秦 逸平・大塚 久哲;秦 逸平・宇山 友理・大塚 久哲;大塚 久哲・白石 昭寿・宇山 友理;浦川 洋介・大塚 久哲・吉川 卓・角本 周
• 通讯作者: 浦川 洋介・大塚 久哲・吉川 卓・角本 周

軸力,曲げ/せん断,及びねじりの複合荷重を同時に受けるRC部材の耐震性能と相関特性

同时承受轴力、弯/剪、扭联合荷载作用的RC构件的抗震性能及相关特性

• 发表时间: 2005
• 期刊: 土木学会論文集 No.801/1-73
• 作者: 大塚久哲;竹下永造;浦川洋介
• 通讯作者: 浦川洋介