A combined energy dissipation system is developed in this paper. In this system lead robber dampers and their parallel connection with oil dampers are used in the braces of a structural frame. A dynanric analysis method of the system, including the modelling of the lead robber damper and the oil damper, is proposed. In the analysis method, the restoring force characteresfics of the lead rubber damper is simulated by the Boue-Wcn hysteretic model, and the behaviour of the oil damper is simulated by a velocity and displacement-related model in which the contributions of the oil damper to the damping force and stiffness of the system are considered. A series of shaking table tests of a three storey steel frame with the combined energy dissipation system are carried out Io evaluate the performance of the system and Io verify the analysis method. The test and analysis show that the performance of the combined energy dissipation system is quite satisfactory and there is a good agreement between the analysis and test results, which indicates that the analysis method proposed in this paper is valid and suoable for the dynamic analysis of the combined energy dissipation system.

Coupled shear wall is one of the main structural elements in high-rise buildings. In this paper, a nonlinear macromodel is proposed to simulate the behavior of coupled shear walls. This model is composed of a multivertical-element model for wall piers and a combined model for coupling beams. In the model for wall piers, some key characters, such as shifting of neutral axis within the wall section, interaction among flexure, shear, and axial forces, can be taken into account. In the model for coupling beams, the deformation of flexure and shear, and the interface bond–slip action are considered by using different elements. Experiments of coupled shear wall specimens with different sizes of coupling beams are carried out to verify the proposed model. A comparison of the analysis with the test results shows that the model is an efficient one in nonlinear analysis of coupled shear walls.

A new seismic energy dissipation shear wall structure is proposed in Ibis paper. Tile new shear wall is one with purposely built-in vertical slits within the wall panel, and rubber belts as seismic energy dissipation devices are installed in the vertical slits. In order to verify this concept, shaking table tests of a 1O-storey shear wall modcl with rubber belts filled in the vertical sifts were carried out, and comparison of seisndc behaviour was made between the new shear wa]l system and a shear wall with reinforced concrete connecting beams as energy dissipation, Furthermore, the seismic behaviour of this new shear wall is analysed by a finite element time history analysis method The test and analysis show thai the new shear wall system has a very good ability to dissipate seismic energy and is easy to use in engineering practice.

A new seismic energy dissipation shear wall structure is proposed in Ibis paper. Tile new shear wall is one with purposely built-in vertical slits within the wall panel, and rubber belts as seismic energy dissipation devices are installed in the vertical slits. In order to verify this concept, shaking table tests of a 1O-storey shear wall modcl with rubber belts filled in the vertical sifts were carried out, and comparison of seisndc behaviour was made between the new shear wa]l system and a shear wall with reinforced concrete connecting beams as energy dissipation, Furthermore, the seismic behaviour of this new shear wall is analysed by a finite element time history analysis method The test and analysis show thai the new shear wall system has a very good ability to dissipate seismic energy and is easy to use in engineering practice.

In this paper, the dynamic response of a very complex structure which has U shaped flexors and specially shaped slant culumns is described. Shaking table tests of a scale model of the building were taxied out to verify the safety of the structure and to, confirm the resulis of a finite element analvsis of the building. The elastic finhe element analysis was done with the help of Super SAP 93, a well-known structural analysis program. From the shaking table test and the finire element analysis, the dynamic eharaeleristics of the building and its maximum responses were evaluated In the ehlastic reeion the analytical results were in good agreement wilh the test results At the end of this paper, some suggestions are given for engineering design of this type of structures