A passive damper for damping relative lateral movement between a tensioned cable or other oblong member and a support structure includes a first fixture element rigidly connected to the cable or other oblong member, a second fixture element rigidly connected to the support structure, and at least one rotational damping device arranged between the first and second fixture elements . The rotational damping device is configured to translate the relative lateral movement into relative rotational moment between at least two arms of the rotational damping device that are connected at a rotational joint with a damping pad clamped in between the at least two arms The rotational joint has a rotational axis (Y) substantially parallel with a longitudinal axis (X) of the cable.

A passive damper for damping relative lateral movement between a tensioned cable or other oblong member and a support structure includes a first fixture element rigidly connected to the cable or other oblong member, a second fixture element rigidly connected to the support structure, and at least one rotational damping device arranged between the first and second fixture elements . The rotational damping device is configured to translate the relative lateral movement into relative rotational moment between at least two arms of the rotational damping device that are connected at a rotational joint with a damping pad clamped in between the at least two arms The rotational joint has a rotational axis (Y) substantially parallel with a longitudinal axis (X) of the cable.

A damper includes a vibration energy buffering transfer unit and a vibration energy dissipation unit. The vibration energy buffering transfer unit includes a plurality of piston transfer structures and connecting tubes, the piston transfer structures includes a cylinder and a piston arranged as a pair, the plurality of piston transfer structures surrounding the vibration energy dissipation unit, the connecting tubes inter-connecting the plurality of cylinders, the vibration energy dissipation unit includes a damping liquid accommodating cavity and damping liquid accommodated in the damping solution accommodating cavity, and one end of the cylinder or the piston being connected to the damping fluid accommodating cavity. The load-bearing enclosing structure provided with said damper can effectively suppress vibration.

The present invention discloses a flexible connecting structure of a prefabricated component and a building main body. The flexible connecting structure comprises multiple layers of cast-in-situ building main bodies spaced up and down, a prefabricated component is connected between two adjacent cast-in-situ building main bodies, a tenon is provided at the lower end of the prefabricated component, a mortise matching the tenon is provided on the top surface of the cast-in-situ building main body, and the prefabricated component is socketed to the lower layer of cast-in-situ building main body by tenon-and-mortise cooperation; and a first flexible layer for reducing the connection rigidity between the prefabricated component and the upper layer of cast-in-situ building main body is provided at the junction between the prefabricated component and the upper layer of cast-in-situ building main body. The present invention realizes a flexible connection between a prefabricated component and a building main body, and avoids the influence of the prefabricated component on the rigidity of the building main body.

The present invention discloses a flexible connecting structure of a prefabricated component and a building main body. The flexible connecting structure comprises multiple layers of cast-in-situ building main bodies spaced up and down, a prefabricated component is connected between two adjacent cast-in-situ building main bodies, a tenon is provided at the lower end of the prefabricated component, a mortise matching the tenon is provided on the top surface of the cast-in-situ building main body, and the prefabricated component is socketed to the lower layer of cast-in-situ building main body by tenon-and-mortise cooperation; and a first flexible layer for reducing the connection rigidity between the prefabricated component and the upper layer of cast-in-situ building main body is provided at the junction between the prefabricated component and the upper layer of cast-in-situ building main body. The present invention realizes a flexible connection between a prefabricated component and a building main body, and avoids the influence of the prefabricated component on the rigidity of the building main body.

A damper for damping vibrations of a structure comprises: a first damping unit, comprising a first damping body having a first mass (m.sub.1), a first spring element having a first spring constant (k.sub.1) and a first damping element having a first damping constant (c.sub.1), wherein said first damping body is configured to be attached to said structure via said first spring element and said first damping element; and a second damping unit, comprising a second damping body having a second mass (m.sub.2), a second spring element having a second spring constant (k.sub.2) and a second damping element having a second damping constant (c.sub.2), wherein said second damping body is configured to be attached to said first damping body via said second spring element and said second damping element.

A novel function-recoverable prefabricated seismic shear wall structure with replaceable components, which includes main structural components, connecting components and replaceable components. All components are connected by bolts or pins. The connections can provide sufficient strength to effectively connect adjacent upper and lower wall panels, or wall panel and coupling beam, together. The replaceable components are installed in the bottom region of the wall and coupling beams, which provide sufficient bearing capacity and stiffness for the building structure under service loads and dissipate seismic energy under the earthquake. The damage concentrates on the replaceable components which could be easily replaced after a strong earthquake so that the function of the building structure could be quickly restored. In addition, the replaceable components with different energy-dissipation mechanisms facilitate the shear wall structure to have multiple seismic fortification lines, and improve the seismic performance of the building structure.

A structure having limited supportable portions has been difficult to isolate from vibration in the direction in which a load is applied. A base isolation apparatus includes a Z-axis base isolation unit, an X-axis base isolation unit, and a Y-axis base isolation unit. The base isolation unit includes a vibration-source connector, an isolated-object connector, a lock device disposed between the isolated-object connector and the vibration-source connector for switching between a state of fixing the isolated-object connector and a state of making it movable, a distance recovery device for generating a force to cause an amount of change in distance to approach zero, depending on the amount of change, and a vibration damper for generating a force in an orientation of hindering the change, depending on the rate of change in distance.

A structure having limited supportable portions has been difficult to isolate from vibration in the direction in which a load is applied. A base isolation apparatus includes a Z-axis base isolation unit, an X-axis base isolation unit, and a Y-axis base isolation unit. The base isolation unit includes a vibration-source connector, an isolated-object connector, a lock device disposed between the isolated-object connector and the vibration-source connector for switching between a state of fixing the isolated-object connector and a state of making it movable, a distance recovery device for generating a force to cause an amount of change in distance to approach zero, depending on the amount of change, and a vibration damper for generating a force in an orientation of hindering the change, depending on the rate of change in distance.

A sound isolation assembly comprising: one or more backing plates; one or more acoustic isolators; and a backing block. The acoustic isolators may be secured between the backing plates and the backing block when the backing plates are fastened to the backing block. When the backing plates are fastened to the backing block, the backing plates are substantially prevented by the acoustic isolators from being in direct contact with the backing block. The acoustic isolators may be fastened to the studs. The sound isolation assembly, when installed in a wall that is supporting a heavy load, raises the Sound Transmission Class rating of that wall.