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| Shaking table tests of steel frame-steel plate shear wall and composite column-steel beam frame structures |
| YANG Pu1，FENG Liqiang2，HE Hanqin1，LI Feng1，LIU Liping1，NIU Changlin3，WEI Hongliang3 |
1.School of Civil Engineering, Chongqing University, Chongqing 400045, China;
2.Gansu Construction Investment (Holdings) Group Co., Ltd., Lanzhou 730050, China;
3.Gansu Construction Investment Technology Research Co., Ltd., Lanzhou 730050, China |
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Abstract In order to further expand the application of steel frame steel plate shear wall and concrete filled steel tubular column steel beam frame structure in high intensity area, two shaking table tests of 1/8 scaled model were carried out based on two high-rise (10-storey) residential buildings in Gansu Province. The results show that the infill wall reached yield state firstly, and then plastic hinge appeared on the outer frame. The plastic damage mainly occurred at the steel plate shear wall, the end of the adjacent beam and column base of the first floor, which reflects the concept of ' multi-defense levels of seismic engineering '. The natural frequency of the structure decreased by 19.5% and 17.4% in X and Y axis respectively after huge earthquake(1.20g); The damage of concrete-filled steel tubular column steel beam frame structure was mainly at the bottom, the fourth and the fifth floor beam ends, and a small amount of plastic hinge appeared at the bottom column base, reflects the design principle of ' strong joint-weak member '. The natural frequency of the structure decreased by about 19.5% and 17.8% in X and Y axis respectively after huge earthquake. Both types of structural systems can achieve the seismic fortification goal of ' no damage under frequent earthquake and no collapse under rare earthquake ', and have good seismic performance. In addition, the lateral deformation mode of the structural system is closely related to the stiffness distribution of the whole structure, and it becomes more obvious with the increase of the peak ground motion. The lateral stiffness of the steel frame-steel plate shear wall decreased along the height, and the whole structure exhibited lateral bending deformation mode. The lateral stiffness of the concrete filled steel tube column-steel beam frame (except the bottom) was uniformly distributed along the height, and the whole structure exhibited lateral shear deformation mode.
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Received: 19 October 2021
Published: 28 February 2023
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