A ground level platform upon which is secured a liquid storage tank, the platform providing a dampening frame, an upper plate, a lower plate and a plurality of ground cleats attaching to aligned lower tank brackets, each paired and aligned ground cleat and lower tank bracket attached by a torsion tightened threaded bolt, the ground level platform absorbing and deterring vibration from earthquakes from damaging the secured liquid storage tank.

A seismic washer and a seismic retrofit system including a seismic washer are provided. The seismic washer includes a fastener comprising a first opening and a washer fixedly attached to and extending from the fastener. The washer includes a second opening provided perpendicular to the first opening. The second opening is configured to receive a bolt that couples the washer to a structural building component. The seismic retrofit system includes the seismic washer and a seismic tie bracket comprising a first arm and a second arm. The first and second arms are disposed in intersecting planes to form an angle bracket. The fastener of the seismic washer is fixedly attached to the first and second arms of the seismic tie bracket proximate to the intersection of the first and second arms of the tie bracket.

A bottom corner damper with a displacement amplification function and a fabricated type shear wall with rocking energy dissipation are provided. The fabricated type shear wall with rocking energy dissipation is composed of a precast shear wall, upper connecting plates, middle connecting plates, lower connecting plates, bent steel plates, bolts, upper support arms, lower support arms, connectors, lead screws, cylinder barrels, viscous fluids, and propellers. A fabricated type shear wall structure, where novel dampers with displacement amplification and steering functions are installed at weak parts of the bottom of the shear wall, the novel dampers are composed of bending energy dissipation dampers, displacement amplification and steering devices and viscous energy dissipation dampers, and the novel dampers have the functions of amplifying the displacement and converting force in a vertical direction of the structure into force in a horizontal direction for transmission.

A retention tie system for pre- or post-construction installation to stabilize masonry or composite walls. The system comprises a tie member anchored in an anchor hole bored into the existing foundation and a tensioned against a base plate and a cover plate seated along the top of the wall. A bracing member is used to provide lateral stability to the respective plate members. A tension washer is used to ensure that the tie members are tensioned to the appropriate load. A guide member is installed within the masonry wall to brace the tie members against lateral deflection.

The present disclosure discloses a self-reset flexible earthquake-resistant system of the prefabricated subway station, comprising prefabricated component prestressed tendon, waterproof rubber, and rubber bearing. The main structure of station is built by connection between prestressed tendon and prefabricated component, it changes the connection methods of connection node from consolidation joint to hinged joint which makes the subway station into a flexible system, while at the same time, self-reset function is realized by prestressed tendon; T and system is combined with rubber waterproof tape, and rubber bearing which is installed in connection site of prefabricated component, multi-protection measures of waterproof is realized, earthquake-resistant effect is also realized. Connection problem with the prefabricated component can be solved by the self-reset flexible earthquake-resistant system of the prefabricated subway station; underground station structure is changed into the flexible system through releasing bending moment in connection site of the prefabricated component, deforming ability of subway station is improved, the earthquake-resistant ability of underground subway station is improved.

A load indicating washer, or tension washer, for visually indicating pre-determined magnitudes of tension force in a tension tie member. The tension washer comprises a body portion with a deformable, curved annular flange member depending from the body portion. When the tension washer is compressed against a flat bearing surface, the flange member deforms to produce a visual or color indication of the magnitude of load in the tie member.

A structure for seismic isolation 10 provided on a structure plane 17 including a pair of left and right columns 5, 5 spaced apart in a horizontal direction, and a pair of upper and lower beams 7A, 7B spaced apart in a vertical direction, wherein the structure for seismic isolation comprises: a seismic isolation device 11 provided in a middle of each of the column 5, 5 to be displaced toward the beam 7A; and a horizontal rigid bearing element that is provided between an area in which the seismic isolation device 11 is provided and the beam 7B and that includes a connection beam 13 connecting the pair of columns 5, 5 and vertical braces 15L, 15R.

A retention tie system for post-construction installation to stabilize masonry or composite walls. The system comprises a tie member anchored in an anchor hole bored into the existing foundation and a tensioned against a base plate and a cover plate seated along the top of the wall. A bracing member is used to provide lateral stability to the respective plate members. A tension washer is used to ensure that the tie members are tensioned to the appropriate load.

Disclosed is a gusset plate connection with sliding end plates for a buckling-restrained brace, including central plate (1), first rib plate (2), second rib plate (3), horizontal end plate (4), first horizontal tie plate (5), second horizontal tie plate (6), bolts (7) and unbonding layers (8). Horizontal end plate (4) is perpendicular to central plate (1) and fixedly disposed on a lower end surface of central plate (1). First horizontal tie plate (5) and second horizontal tie plate (6) are both disposed on an upper surface of horizontal end plate (4) and are located at two sides of central plate (1), respectively. Unbonding layers (8) are each disposed at a bottom surface of horizontal end plate (4), between horizontal end plate (4) and first horizontal tie plate (5), and between horizontal end plate (4) and second horizontal tie plate (6). The components are connected by means of bolts (7).

A building wall comprises a shear wall panel having a horizontal bottom edge, a bottom left corner, and a bottom right corner. The wall sits atop a horizontal base support located under the horizontal bottom edge of the shear wall panel. A tie-down couples the shear wall panel to the base support at a central point along the horizontal bottom edge of the shear wall panel such that the shear wall panel rocks under horizontal forces. Toe crushing elements are situated under the bottom corners of the shear wall panel. The bottom corners of the shear wall panel compress the toe crushing elements as the shear wall panel rocks about the tie-down under horizontal forces.