结构构件压剪试验摩擦力测量装置开发与应用
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摘要
在结构构件压剪试验中,准确获得竖向作动器与反力架间的摩擦力,是得到其准确承载力的关键。针对一种摩擦力测量装置开展研究,该装置可承担20 000 k N轴向压力,水平方向可测量不超过500 kN范围内的摩擦力。详细介绍了该摩擦力测量装置的工作原理,推导了所测摩擦力和该装置应变的关系;提出了将应变转化为电压信号的全桥电路,推导并证明了所测摩擦力和输出电压信号间成线形关系;通过试验标定了所测力和应变的比例关系,得到摩擦力测量装置的灵敏度系数。将该摩擦力测量装置应用于多种结构构件的压剪试验,结果表明,该摩擦力测量装置能够准确测量竖向作动器与反力架间的摩擦力,有效提高了大型压剪试验的精度。
In the compression-shear test of structural members,precise measurement of the friction force between the vertical actuator and the loading frame is important to obtain the accurate strength of the specimen. This paper proposes an innovative friction force measurement device,which can sustain a vertical load of 20 000 kN,and measure friction force no larger than 500 kN. The working principle of the device is presented,and the relationship between the measured force and strain is derived. A full-bridge circuit is developed to transform the strain to the voltage signal,and the linear relationship between the measured force and the voltage signal is proved. The coefficient to describe the relationship between the measured force and the strain is calibrated. The device is validated by a series of compressionshear tests. The test results suggest that the device can accurately measure the friction force between the test specimen and the loading frame,thus can significantly increase the accuracy of large-scale compression-shear tests.
In the compression-shear test of structural members,precise measurement of the friction force between the vertical actuator and the loading frame is important to obtain the accurate strength of the specimen. This paper proposes an innovative friction force measurement device,which can sustain a vertical load of 20 000 kN,and measure friction force no larger than 500 kN. The working principle of the device is presented,and the relationship between the measured force and strain is derived. A full-bridge circuit is developed to transform the strain to the voltage signal,and the linear relationship between the measured force and the voltage signal is proved. The coefficient to describe the relationship between the measured force and the strain is calibrated. The device is validated by a series of compressionshear tests. The test results suggest that the device can accurately measure the friction force between the test specimen and the loading frame,thus can significantly increase the accuracy of large-scale compression-shear tests.
引文
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[19]陈志华,姜玉挺,张晓萌,等.T字型钢管束组合剪力墙变形性能研究及有限元分析[J].土木工程学报,2016,49(增刊2):39-44.(CHEN Zhihua,JIANG Yuting,ZHANG Xiaomeng,et al.Research on deformation property and finite element analysis of T-shaped bundled lipped channel-concrete composite wall[J].China Civil Engineering Journal,2016,49(Suppl.2):39-44.(in Chinese))
[20]DENG Kailai,PAN Peng,WANG Haishen,et al.Experimental study on slotted RC wall with steel energy dissipation links for seismic protection of buildings[J].Engineering Structures,2017,145:1-11.
[21]程实.配置复材管内约束的方钢管混凝土柱轴压及抗震性能研究[D].北京:清华大学,2016:145-146.(CHENG Shi.Behavior of hybrid columns of concrete-filled square steel tube with FRP-confined concrete core under axial Compression and Seismic Loading[D].Beijing:Tsinghua University,2016:145-146.(in Chinese))
[2]李惠,王震宇,吴波.钢管高强混凝土叠合柱抗震性能与受力机理的试验研究[J].地震工程与工程振动,1999,19(3):27-33.(LI Hui,WANG Zhenyu,WU Bo.Experimental research on mechanism and seismic performance of laminated column with steel tube filled with high-strength concrete[J].Earthquake Engineering&Engineering Vibration,1999,19(3):27-33.(in Chinese))
[3]朱伟庆,贾金青.型钢超高强混凝土柱抗震性能试验研究[J].建筑结构学报,2015,36(4):57-67.(ZHU Weiqing,JIA Jinqing.Experimental study on seismic behavior of steel reinforced high strength concrete columns[J].Journal of Building Structures,2015,36(4):57-67.(in Chinese))
[4]潘钻峰,刘籍蔚,吴畅,等.外包配筋ECC组合柱抗震性能试验研究与有限元分析[J].建筑结构学报,2017,38(9):38-45.(PAN Zuanfeng,LIU Jiwei,WUChang,et al.Experimental study and finite element analysis of seismic behavior of reinforced ECCcomposite columns[J].Journal of Building Structures,2017,38(9):38-45.(in Chinese))
[5]王宇航,王维,周绪红,等.压-弯-扭耦合荷载作用下钢管约束钢筋混凝土柱抗震性能试验研究[J].建筑结构学报,2017,38(增刊1):185-189.(WANGYuhang,WANG Wei,ZHOU Xuhong,et al.Experimental study on seismic behavior of steel tube confined reinforced concrete columns subjected to combined compression-bending-torsion[J].Journal of Building Structures,2017,38(Suppl.1):185-189.(in Chinese))
[6]蔡新江,巩牧华,贾红星,等.实腹式型钢混凝土十字形截面柱抗震性能拟静力及混合试验研究[J].建筑结构学报,2016,37(5):146-154.(CAIXinjiang,GONG Muhua,JIA Hongxing,et al.Seismic quasi-static test and hybrid test on+-shaped section solid-web steel reinforced concrete columns[J].Journal of Building Structures,2016,37(5):146-154.(in Chinese))
[7]王秋维,史庆轩,姜维山,等.新型截面型钢混凝土柱抗震性能试验研究[J].建筑结构学报,2013,34(11):123-129.(WANG Qiuwei,SHI Qingxuan,JIANG Weishan,et al.Experimental study on seismic behavior of steel reinforced concrete columns with newtype cross sections[J].Journal of Building Structures,2013,34(11):123-129.(in Chinese))
[8]SOUDKI K A,WEST J S,RIZKALLA S H,et al.Horizontal connections for precast concrete shear wall panels under cyclic shear loading[J].PCI Journal,1996,41(3):64-80.
[9]CHENG Wenma,LI Shenghsu,JUI Changkuo,et al.A flexible tactile and shear sensing array fabricated using a novel buckypaper patterning technique[J].Sensors and Actuators,2015,231:21-27.
[10]SURESH R,TJIN S C,NGO N Q.Shear force sensing by strain transformation using non-rectilinearly embedded fiber Bragg grating[J].Sensors and Actuators,2004,116:107-118.
[11]TAKUMA Iwasaki,TOSHIHIRO Takeshita,YUJIArinaga,et al.Shearing force measurement device with a built-in integrated micro displacement sensor[J].Sensors and Actuators,2015,221:1-8.
[12]JIN W L,MOTE C D Jr.Development and calibration of a sub-millimeter three-component force sensor[J].Sensors and Actuators,1998,65:88-94.
[13]周惠蒙,吴斌,谭晓晶,等.调谐液体阻尼器的振动台子结构试验研究[J].土木工程学报,2014,47(增刊1),47:70-75.(ZHOU Huimeng,WU Bin,TANXiaojing,et al.Shaking table substructure test of tuned liquid damper[J].China Civil Engineering Journal,2014,47(Suppl.1):70-75.(in Chinese))
[14]潘鹏,赵蒙怀,冯鹏,刘亮,邓开来.一种新型测剪力装置:CN204389076U[P].2015-06-10.
[15]范钦珊,王波,殷雅俊.材料力学[M].北京:高等教育出版社,2000:49-50.
[16]秦曾煌.电工技术[M].北京:高等教育出版社,2000:50-51.
[17]刘亮.新型测剪力装置的开发和应用[D].北京:清华大学,2016:9-26.(LIU Liang.The development and application of a new measure equipment of shear force[D].Beijing:Tsinghua University,2016:9-26.(in Chinese))
[18]齐五辉,杨蔚彪,常为华,等.中国尊大厦内置钢板支撑混凝土剪力墙设计研究[J].建筑结构,2015,45(18):1-5.(QI Wuhui,YANG Weibiao,CHANGWeihua,et al.Structural design and study on steelplate-bracing concrete shear walls of China Zun Tower[J].Building Structure,2015,45(18):1-5.(in Chinese))
[19]陈志华,姜玉挺,张晓萌,等.T字型钢管束组合剪力墙变形性能研究及有限元分析[J].土木工程学报,2016,49(增刊2):39-44.(CHEN Zhihua,JIANG Yuting,ZHANG Xiaomeng,et al.Research on deformation property and finite element analysis of T-shaped bundled lipped channel-concrete composite wall[J].China Civil Engineering Journal,2016,49(Suppl.2):39-44.(in Chinese))
[20]DENG Kailai,PAN Peng,WANG Haishen,et al.Experimental study on slotted RC wall with steel energy dissipation links for seismic protection of buildings[J].Engineering Structures,2017,145:1-11.
[21]程实.配置复材管内约束的方钢管混凝土柱轴压及抗震性能研究[D].北京:清华大学,2016:145-146.(CHENG Shi.Behavior of hybrid columns of concrete-filled square steel tube with FRP-confined concrete core under axial Compression and Seismic Loading[D].Beijing:Tsinghua University,2016:145-146.(in Chinese))