Shaking table test on high-rise isolated building with tension-resistant devices

被引：0

作者：

Chen P. ^{[1
]}

Zhou Y. ^{[1
]}

Liu L. ^{[1
]}

Hu K. ^{[2
]}

Jiang L. ^{[2
]}

Qu G. ^{[2
]}

机构：

[1] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai

[2] China Shipbuilding NDRI Engineering Co., Ltd, Shanghai

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2017年 / 38卷 / 07期

关键词：

Base isolation; High-rise building; Lead rubber bearing; Seismic response; Shaking table test; Tension-resistant device;

D O I：

10.14006/j.jzjgxb.2017.07.015

中图分类号：

学科分类号：

摘要：

A high-rise base isolated building in Xichang (seismic intensity of 9) is taken as prototype. The upper-structure employs frame-core tube form with a total height of 58.3 m using lead rubber bearings as isolators. Shaking table test on a model structure with a similitude ratio of 1/15 was conducted to investigate the performance of the isolated structure under earthquake. Results illustrate that the isolation floor reduces acceleration response of upper-structure remarkably, and the amplification coefficient of the isolation layer is smaller than 0.5 which meets the requirement of decreasing one degree of seismic intensity for structural design. Horizontal displacement concentrates on isolation layer, thus story displacement is comparatively smaller and inter-story drift meets the limitation requirement in Chinese code. Besides, the full hysteretic loops of isolation layer indicate good ductility and energy dissipation property. However, under strong earthquake, tensile stress occurs in the bearings, which reveals the risk of overturning. After installation of tension-resistant device for bearings in the corner, the following experiment results reveal that this device would not pose significant effect on the horizontal mechanic properties of the structure and the regular vertical and horizontal motion of the bearing under compression state. And the tension resistant effect of the device when the bearing is under tensile state is proved by comparison results. © 2017, Editorial Office of Journal of Building Structures. All right reserved.

引用

页码：120 / 128

页数：8

共 12 条

[1]

Martelli A., Forni M., Clemente P., Recent worldwide application of seismic isolation and energy dissipation and conditions for their correct use, 15th World Conference on Earthquake Engineering, (2012)

[2]

Fu W., Wang H., Liu W., Et al., An experimental study on shaking table of isolated structure model with LRB(1), Journal of Harbin Institute of Technology, 39, 2, pp. 201-206, (2007)

[3]

He W.F., Liu W.G., Yang Q.R., Et al., Study on dynamic response of large and small aspect ratio isolated buildings, The Structural Design of Tall and Special Buildings, 23, 17, pp. 1329-1344, (2014)

[4]

Lu X.L., Wang D., Wang S.S., Investigation of the seismic response of high-rise buildings supported on tension-resistant elastomeric isolation bearings, Earthquake Engineering and Structural Dynamics, 45, 13, pp. 2207-2228, (2016)

[5]

Zhou Y., Lu W., Lu X., Practical model design method of shaking table tests, Structural Engineers, pp. 30-34, (2003)

[6]

Zhou Y., Lu X., Lu W., Shaking table test model design in different structures, Structural Engineers, 22, 4, pp. 37-40, (2006)

[7]

Zhou Y., Lu X., Method and Technology for Shaking Table Model Test of Building Structures, pp. 3-21, (2012)

[8]

Liu L., Zhou Y., Some significant problems in the shaking table test model design of a high-rise isolated structure, Structural Engineers, 22, 4, pp. 37-40, (2015)

[9]

Chen P., Zhou Y., Liu L., Et al., Experimental research on mechanical performance of tension-resistant device for rubber bearings, Journal of Building Structures, 38, 7, pp. 113-119, (2017)

[10]

Li G., Zhou X., Ding X., Shaking table study on a model of steel concrete hybrid structure tall building, Journal of Building Structures, 22, 2, pp. 2-7, (2001)

← 1 2 →