A damper frame includes a structural frame and a damper assembly secured to the structural frame. The damper assembly includes a damper support secured to the structural frame. A damper is secured to the damper support. A diagonal link is secured to the structural frame. A lever is secured to the damper support and the damper. The lever is pivotally connected to the diagonal link so displacement of the diagonal link is amplified and transferred to the damper. The damper support includes a laterally-extending cantilevered portion and the damper is secured to the damper support at the cantilevered portion.

A rigid substructure (12) tied to a restrained column (16) at different floors undergoes rigid body rotation due to lateral dynamic loading. Flexural members (18) that are connected to the substructure (12) and another anchor column (14) resist the rigid body rotation and undergo vertical deflections. Damped diagonals (20) connected to common nodes of the rigid substructure and flexural members, for one embodiment, receive amplified displacements and more effectively dissipate energy. Flexural members restore the structure to the unloaded position. The system does not require moment connections and can work with flexure induced in simply supported beams. The system is highly effective and may remain elastic under maximum considered earthquake ground motions.

The present invention is an arch/building support system comprising two (or more) opposing wedges, at least one located at the base of each side of the arch, with the bases of the opposing wedges facing each other, the opposing wedges connected to each other by a semi-rigid flexible rod or rods. In a building structure, the flexible member could be rebar(s) made of one or various materials (metal, plastic, nylon etc.) with various degree of elasticity. The rebars could envelop the structure (around the outside or shell) or reside within it, and may also incorporate some sort of spring mechanism. The rebar(s) are anchored to the upper wedge on each side of the arch, but need not be, and could instead be anchored to the ground.

A construction steel platform system using a tuned liquid damper (TLD) and a tuned mass damper (TMD) for composite tuned damping is provided. According to the construction steel platform system using a TLD and a TMD for composite tuned damping, a composite damper is composed of the TLD and the TMD overlapping each other, and a construction steel platform is placed above the double dampers. By adjusting a hole diameter of a partition plate in the TLD, a liquid level in a water tank, a stiffness of a spring at an edge of a friction support and mass of materials of a top of the steel platform, the whole steel platform system can achieve composite tuned damping. The TLD and the TMD can be flexibly combined in series or in parallel according to requirements of actual wind and earthquake loads.

A passive damper with a cylinder and piston arrangement, the cylinder being arranged to be connected to a first item, the cylinder having a first chamber and a second chamber. The piston arrangement is connected to a second item, the piston arrangement comprising a piston movable in the cylinder. A fluid passage is associated with a one-way valve. Damping fluid substantially freely flows through the fluid passage in a first direction of movement of the piston arrangement in the cylinder and the damping fluid is restricted from flowing through the fluid passage in a second direction of movement of the piston arrangement in the cylinder. Damping fluid relatively freely flows around the piston when the piston is in the second chamber of the cylinder and the damping fluid is restricted from flowing around the piston when the piston is in the first chamber of the cylinder.

An elastic wave damping structure can include a structural arrangement of at least two elements, each with an inner volume and containing a medium resistant to passage of an elastic wave. Example elements can be earth boreholes or water pylons. The structural arrangement can taper from an upper aperture to a lower aperture, the structural arrangement defining a protection zone at the upper aperture. The structural arrangement can be configured to attenuate power from the anticipated elastic wave within the protection zone relative to power from the anticipated elastic wave external to the protection zone. A grouping may include elements that form acute or obtuse angles with a direction of an elastic wave to attenuate wave power. High-value buildings or other structure in a protection zone on land or in water can be substantially shielded from seismic or water waves.

A gap caulking device and a caulking method are provided, wherein the gap caulking device includes long plates, short plates, a dial plate, a three-way joint, a tensioner and a limit rod, and a closed quadrilateral structure with an adjustable angle is formed by two long plates hinged to each other and two short plates hinged to each other, a dial plate and a pointer are respectively provided on the two short plates, damping rods hinged on the two short plates to each other and a three-way joint matched with the two long plates are passed through by a limit rod to achieve connection limiting, and a shape memory alloy wire is connected to the three-way joint by a tensioner and is parallel to the limit rod. The problem is overcome that the original traditional wedge-shaped material that gaps rely on has a single filling function.

The present invention relates to an earthquake-resistant light tower with a tuned mass damper, in which a tuned mass damper is installed in a head part of a light apparatus installed on the top of a tower to absorb an earthquake or other vibration, thereby protecting a tower from vibration.

The purpose of the present invention is to reduce costs and building time, address the safety of shelter main body against a tsunami, ensure water pressure resistance against a tsunami caused by a Nankai Trough Great Earthquake, provide the safety required when using an evacuation shelter, provide favorable livability, and shorten evacuation time. A shelter main body 3 is a structure made of reinforced concrete; slopes 3a are provided to two sides of the exterior of the shelter main body 3. Surplus soil is provided to the slopes 3a, the surface is covered with concrete, the shelter main body 3 is reinforced with a plurality of H-section steel members 3b, an opening 4 is provided to an above-ground part, and an outside door 5 and inside door 6, which constitute a double structure fireproof steel door for opening and closing the opening 4, are provided, thus forming a structure for withstanding tsunami pressures.

A vertical seismic isolation device includes: a fixed frame; a movable frame arranged on the fixed frame; a support guide mechanism which allows only vertical movement of the movable frame; and a restoration member which maintains a constant distance between the movable frame and the fixed frame. The support guide mechanism includes: a track rail provided on the fixed frame; a moving block assembled to the track rail through rolling elements; a support leg, which has one end coupled to the moving block and another end coupled to the movable frame, and converts vertical movement of the movable frame into a motion of the moving block; and an auxiliary leg, which is half as long as the support leg, and has one end coupled to the support leg at an intermediate position in a longitudinal direction of the support leg and another end coupled to the fixed frame.