95results about How to "Dissipate seismic energy" patented technology

The invention discloses a buckling control support with the end provided with a staggered pyramid type energy consumption unit. The buckling control support is characterized by being composed of an end restraint section, energy consumption sections and a supporting flat section. The two ends of the buckling control support are connected with beams, column components or nodes through bolts to form a whole, so as to achieve the objective of improving lateral stiffness resistance of the components. The buckling control support with the end provided with the staggered pyramid type energy consumption unit maintains elasticity under the effect of a small earthquake; when the effect of a medium earthquake or a large earthquake occurs, the buckling control support enters a yielding phase, and the effect of a damper can be achieved due to the good hysteresis energy consumption performance of the buckling control support. Compared with a conventional buckling restraint support, according to the buckling control support, the processes of adding a sleeve outside a core energy consumption component in the conventional manufacturing process and performing grouting and the like are avoided in manufacturing process, and the buckling control support is convenient to manufacture. The support can be prefabricated in a factory, the component quality is guaranteed, the site construction operation workload is reduced, and the buckling control support saves energy and is environmentally friendly.

The invention relates to a vibration-isolating device, in particular to a combined vibration-isolating device. A ball / disc spring vibration-isolating device comprises a vibration-isolating support, and the upper end of the vibration-isolating support is connected with a damper. The device is not only suitable for a newly-built structure, but also suitable for anti-seismic reinforcement and post-earthquake repair of an original structure. Moreover, the device is applicable to ordinary civilian housings, civil engineering such as structures, bridges and the like, as well as storey-increased buildings and shifting buildings. The device can also be applied in vibration isolation and reduction of instruments and equipment and has low manufacturing cost and broad application prospects.

The invention discloses a concrete filled steel tube row column shear wall with a structural steel support and a manufacturing method thereof. The shear wall comprises prefabricated concrete filled steel tubular columns arranged at certain intervals, structural steel supporting components, sleeve connecting components for connecting structural steel and concrete filled steel tubes, concrete poured into a wall space in a filling mode, and steel bar nets which are used for preventing early cracking of the concrete and arranged on two sides of a wall body in advance. The shear wall gives full play to the good axial compressive performance of the concrete filled steel tubular columns. The rigidity of the wall body is increased due to addition of the structural steel supporting components. A rubber pad layer is arranged in each sleeve connecting component, so that partial damage at the joints of the concrete filled steel tubular columns and the supporting components is reduced to a certain extent. Bulging of steel tubes is restrained due to the hooping function of sleeves to the concrete filled steel tubes, and the three layers of defenses including the concrete, the structural steel support and the concrete filled steel tubes are formed. The combined shear wall has high bearing capacity and a good anti-seismic property, most of the components are prefabricated components and are convenient to splice after being conveyed to a construction site, and work time is saved.

The invention belongs to the field of civil engineering, and relates to a fabricated shear-wall energy-dissipation vibration-reduction horizontal connecting device and a construction method thereof. A pre-embedded part and a connecting part of the fabricated shear-wall energy-dissipation vibration-reduction horizontal connecting device are both arranged in the wall body, changes of performances such as corrosion, erosion and aging can be avoided, the durability of the whole structure is ensured, plane outer warping of an energy-dissipation connecting device is avoided, and the better energy-dissipating capacity can be achieved. The energy-dissipation connecting part is placed in the wall body and coincides with the axis of a horizontal shaft of the section of the wall body, force balance of the wall body, rigidity in the plane and carrying capacity are ensured, and eccentric bending moment can not be generated. With the connecting mode, the efficiency of prefabricated shear-wall on-site assembling construction can be improved substantially, enough initial rigidity supplied to shear-wall to connect under the function of small vibration can be achieved, under the function of big vibration, earthquake energy can be dissipated, and vibration-reduction thoughts of structure and component ductility can be improved, and meanwhile, the whole effect of building beauty and space usage can not be influenced, steel products can be saved, and a certain economic benefit can be achieved.

The invention provides a girder-falling prevention device. The device is arranged on a bridge girder base body and comprises a fixed guide rail, a fixed device and an elastic-plastic device, wherein the fixed guide rail is connected with a bridge girder body; the fixed device is connected with the base body; and the elastic-plastic device comprises a first end in clearance fit with the fixed guide rail and a second end connected with the fixed device. The device has the following advantages that: the device has a simple and reliable structure, is clear in force transferring and bearing and can achieve the effects of preventing girder from falling, dissipating seismic energy and resisting drawing, thus protecting the bridge girder in multiple directions, reducing seismic damage on the bridge girder and guaranteeing life and property safety.

The invention belongs to the technical field of earthquake resistance, damping and wind resistance of engineering structures and provides a collision and buckling energy-consuming damper. The collision and buckling energy-consuming damper comprises a mass ball, a shell, a guide rod, backsprings, a plurality of groups of suspension arm rods, closure plates and a connecting plate, the cross section of the shell is square, the closure plates are fixed at two ends of the shell, the guide rod is fixed at the centers of the closure plates, the mass ball is penetratingly arranged on the guide rod and is capable of freely moving along the same, the suspension arm rods arranged at intervals are fixed on the inner wall of the shell and are capable of colliding with the mass ball by the aid of the length thereof and being separated from the mass ball after buckling, and the backsprings are fixed inside the closure plates and sleeved at two ends of the guide rod. The suspension arm rods are prone to buckling and collide with the mass ball when the mass ball moves along the guide rod, so that the suspension arm rods are buckled, and energy is consumed. When colliding with the backsprings and moving reversely, the mass ball continues to collide with the suspension arm rods. During operation, friction, collision and buckling can consume the energy, and accordingly the damper is a high-energy-consumption type damper wide in tuning frequency band.

The invention relates to a double-core prestressed tension self-restoring energy dissipation supporting device, which is installed on a building and comprises a fist core component, a second core component, an outer component, two inner bottom boards, two outer bottom boards, a plurality of prestressed tension components and an energy dissipation unit. The outer component covers the first core component and the second core component. The two inner bottom boards are disposed at two ends of the first core component respectively, and the two outer bottom boards are disposed at two ends of the outer component respectively. The energy dissipation unit is used for dissipating energy of relative displacement between the first core component and the outer component. The prestressed tension components with two end fixation forms respectively generate elongation delta when stressed, so that relative displacement between the first core component and the outer component reaches 2delta, and seismic energy is dissipated through the energy dissipation unit.

The invention discloses a steel plate shear wall which comprises a shear wall body composed of two oppositely-arranged steel plates and a biomimetic core layer. The biomimetic core layer is a polygonal honeycomb, polygonal honeycomb cells are connected with the shear wall body through fasteners, and the polygonal honeycomb is composed of polygonal honeycomb cells mutually connected in a plane. The biomimetic steel plate shear wall can effectively improve the bending resistance performance, flexural properties, deformation energy-dissipating capacity under the earthquake action and other mechanical property indexes of the steel plates. An applicant conducts three-dimensional finite element analysis on the biomimetic steel plate shear wall structure, and the outside-plane flexural properties and deformation energy-dissipating capacity of the biomimetic steel plate shear wall are 1.8-2.3 times of the properties of traditional steel plate shear walls under the condition that two types of steel plate shear walls are equal in mass.

The invention belongs to the technical field of civil engineering aseismic structural systems, and provides a ductile coupling beam swinging steel frame system. According to the ductile coupling beamswinging steel frame system, steel supporting frames composed of frame beams, frame columns and steel supports bear the vertical load, the lateral rigidity and resilience are provided, and the elasticity is maintained all the time by allowing the bottoms of the steel columns to rise under the action of an earthquake; seismic energy is dissipated through replaceable connecting beams and swinging type column feet, wherein the steel supporting frames on the left side and right side are connected through the replaceable connecting beams, and the bottoms of the frame columns adopt the swinging typecolumn feet; when a structural system is subjected to the seismic action, the seismic energy is dissipated by the replaceable connecting beams and the swinging type column feet, and the steel supporting frames on the two sides are prevented from being damaged; and the concept of the structural system is clear, design is simple, the action mechanism is clear, the replaceable connecting beams and the swinging type column feet are used as energy dissipation elements and connected with steel columns through bolts, input energy is dissipated in the earthquake, and after the earthquake, the purposeof quick recovery of the use function of the structure system can be achieved by replacing an energy dissipator.

The invention relates to the technical field of building protective walls, and discloses a replaceable damping filling wall, which includes an upper frame beam, a lower frame beam, a left frame column, a right frame column and a filling wall panel, and the filling wall panel is connected with the upper frame beam, the lower frame beam, and the filling wall panel. The frame beams, left frame columns and right frame columns are all filled with damping materials, the filling wall panels are connected with the upper frame beams and the lower frame beams through connectors, and the filling wall panels, upper frame beams and lower frame beams are all equipped with Embedded bolts, the connecting piece includes a connecting plate, and the position corresponding to the embedded bolt on the connecting plate is provided with an arc-shaped chute, and the embedded bolt is passed through the arc-shaped chute and fixed with a nut to complete the connection. The replaceable damping filling wall of the present invention can ensure energy consumption under strong earthquakes and avoid damage to the main structure and the filling wall itself.

A link-type seismic tie is provided between a steel structural support and a buckstay, and includes two horizontally arranged, parallel, and spaced apart link members, which are connected at their ends to large vertical pins. Each of the link members includes two horizontally arranged and parallel longitudinal outboard stringers and a horizontally arranged and parallel longitudinal center stringer centered between the two outboard stringers. Each link member further includes finger plates standing upright and spaced apart from each other relatively perpendicular to the longitudinal stringers. The finger plates are held between each of the outboard stringers and the longitudinal center stringer. A gusset plate connects the outboard stringers to a pin plate, which is connected to a large pin at the buckstay. The other end of the link members is connected to a large pin at the steel structural support via the ends of the outboard stringers.

The invention discloses a buckling-restrained stiffened steel plate shear wall and belongs to the technical field of structural engineering. The buckling-restrained stiffened steel plate shear wall comprises an embedded steel plate, reinforced concrete cover plates, an edge component, and stiffeners. The edge component comprises edge beams and edge posts. The embedded steel plate is fixedly connected with the upper and lower edge beams. The stiffeners are fixed on two sides of the embedded steel plate. The reinforced concrete cover plates are symmetrically fixed on two sides of the embedded steel plate. Gaps are reserved between each of the reinforced concrete cover plates and each of the embedded steel plate and the edge beams. The buckling-restrained stiffened steel plate shear wall effectively prevents buckling noise like 'drumbeat' and has better 'pinching' of hysteretic curves.

The invention discloses a bidirectional-limiting unidirectional-movement basin-type rubber support, comprising a unidirectional-movement basin-type rubber support; the bidirectional-limiting unidirectional-movement basin-type rubber support is characterized in that cylindrical baffle plates are fixed on side faces of the two non-movable sides of a top plate of the unidirectional-movement basin-type rubber support in a welding manner; each of the two non-movable sides of a bottom basin of the unidirectional-movement basin-type rubber support is fixedly connected with a bottom basin extension plate; a door-shaped limiting frame is fixed on the upper surface of each of the bottom basin extension plates in a threaded manner; the cylindrical baffle plates are located in the door-shaped limiting frames; the upper edges of the cylindrical baffle plates contact beams of the door-shaped limiting frames; distances between the cylindrical baffle plates and two upright posts of the door-shaped limiting frames all are 50 to 300mm. The support, under the earthquake action, has the effect of restricting an over-displacement of the top plate at a movement direction and a vertical-up displacement of the top plate; the support can realize that each pier of a bridge is stressed jointly and the earthquake resistance performance of each pier can be brought into full play; meanwhile, the support follows the production technology and the installation technology of the current support so that the support can be repaired conveniently after engineering application and earthquake.

The invention provides a fabricated concrete self-resetting beam-column joint connecting structure and an assembling method. A prefabricated reinforced concrete beam and a prefabricated reinforced concrete column of the structure are vertically connected through a connecting plate, pre-buried connecting steel plate grooves are formed in the connecting ends of the prefabricated reinforced concretebeam and the prefabricated reinforced concrete column correspondingly, and two sides of the connecting plate are connected with the two pre-buried connecting steel plate grooves; and prestressed tendons sequentially transversely penetrate through the prefabricated reinforced concrete beam, the pre-buried connecting steel plate groove in the prefabricated reinforced concrete beam, the connecting plate and the pre-buried connecting steel plate groove of the prefabricated reinforced concrete column and finally penetrate out of the prefabricated reinforced concrete column, each prestressed tendonanchorage device is correspondingly screwed and fixed at the extending end of the corresponding prestressed tendon, and energy dissipation dampers are mounted on the two sides of the connecting plate.The technical problems of how to develop a joint connecting mode which is environmentally friendly, easy to assemble, capable of effectively dissipating energy under the action of earthquake loads and meanwhile ensuring that the structure is small in deformation after an earthquake or can be restored to the initial state are solved.

An energy-dissipation and seismic-mitigation bridge support aims to effectively eliminate harmful vibration of a pier at an inherent frequency band and reduce pier top displacement, pier body bending moment and stress of a high pier so as to effectively improve the overall anti-seismic property of a bridge. The energy-dissipation and seismic-mitigation bridge support comprises an upper support plate, a lower support plate and a vertical support structure located between the upper support plate and the lower support plate, and the upper support plate and the lower support plate are fixedly connected with a beam body and a pier body cushion stone. An upper baffle and a lower baffle are arranged on the outer edge of the upper support plate and the outer edge of the lower support plate correspondingly and vertically extend, elastic connecting pieces are arranged on the horizontal plane between the upper baffle and the lower baffle, the far end and the near end of each elastic connecting piece are fixedly connected with the upper baffle and the lower baffle correspondingly, and the optimal connecting rigidity ki and connection damping ci exist between the beam body and the support.

The invention discloses an annular steel wire rope-curved surface steel basin composite damping support base which comprises an upper support base plate and a lower support base plate, wherein a support body, a steel basin and dampers are arranged between the upper support base plate and the lower support base plate; a rubber plate is arranged inside the steel basin; the support body is used for supporting the top of the rubber plate; the circumferential surface of the lower end of the support body is matched with the inner wall of the steel basin; the bottom of the steel basin is connected with the lower support base plate through shearing nails; the bottom surface of the steel basin is a spherical surface; the spherical surface of the steel basin is matched with the spherical concave surface of the lower support base plate; the dampers are steel wire rope dampers; the steel wire rope dampers are annually arranged at the peripheries of the support body and the steel basin. The annular steel wire rope-curved surface steel basin composite damping support base has functions of a common steel basin type support base, a tensile force support base and a damping shock resistance support base, is capable of resisting earthquake inertia force from different directions within a horizontal plane, has functions of energy dissipation and earthquake resistance, has relatively large recovery force, can be relatively easily reset after earthquake, and has wide market prospects and good economic benefits.

The invention discloses an assembled active beam node of a built-in X-shaped low-yield-point type steel connecting piece. The assembled active beam node mainly comprises a prefabricated beam, a beam end connecting section, a connecting channel steel, a common stressed reinforcement, a profile steel connecting piece, a post-cast node and a connecting sleeve. One connecting section of the prefabricated beam which is produced on site and provided with a combed joint is arranged, the prefabricated beam is transported to the site after being manufactured in a factory and positioned through a high-strength bolt and the profile steel connecting piece on site, then the prefabricated beam and the reserved connecting reinforcement of the connecting section are connected through a grouting sleeve and poured with ultrahigh-tenacity cement-based composite materials, thus being capable of forming a reliable connecting node. Through the assembled active beam node, the on-site construction difficulty can be reduced, the energy consumption capability and deformation capability of the shearing wall-beam node can be improved, and the overall anti-seismic property of the wall-beam node can be guaranteed.

A seismic isolation bearing has a lower plate and an upper plate separated by a slider. The lower plate has an upward facing concave surface. The upper plate has a downward facing concave surface. The slider includes a first member and a second member separated by a shock absorbing pad. The first member has an upper convex surface that slides along the concave surface of the upper plate. The second member has a lower convex surface that slides along the concave surface of the lower plate. In the event of an earthquake, the lower plate and the upper plate are intended to move relative to each other via the slider to dissipate the horizontal seismic energy. In addition, the shock absorbing pad can deform to absorb the vertical seismic energy. Thus, the seismic isolation bearing can increase its ability to isolate seismic energy.

The invention relates to a multifunctional replaceable coupling beam structure. The coupling beam structure comprises a replaceable segment and non-replaceable segments which are connected at two endsof the replaceable segment in a detachable mode, the replaceable segment consists of a viscoelastic damper and a metal damper which are connected in parallel, wherein the viscoelastic damper consistsof steel plate layers and rubber layers which are alternately distributed between the steel plate layers, the metal damper is an 'H'-like steel part consisting of a top flange, a bottom flange and aweb welded between the top flange and the bottom flange, the viscoelastic damper can dissipate energy in wind-induced vibration and small earthquake transformation, the metal damper shears yielding energy dissipation under the action of a medium earthquake and a major earthquake, the replaceable coupling beam has both wind-resistant and earthquake-proof functions, is strong in energy dissipation capacity and can be quickly replaced after an earthquake.

The invention discloses a steel damping limiting unidirectional moving pot type rubber support seat. The steel damping limiting unidirectional moving pot type rubber support seat comprises an unidirectional moving pot type rubber support seat, and is structurally characterized in that a top plate extension plate is fixedly connected with two inactive sides of a top plate of the unidirectional moving pot type rubber support seat, an X-shaped steel plate damper is hung on the bottom face of the top plate extension plate, a bottom pot extension plate is fixedly connected with two inactive sides of a bottom pot of the unidirectional moving pot type rubber support seat, two check blocks are welded on the upper surface of the bottom pot extension plate, the X-shaped steel plate damper is located between the two check blocks, and the distance between each check block and the X-shaped steel plate damper is 50-30mm. The steel damping limiting unidirectional moving pot type rubber support seat can achieve the purpose of enabling all piers of a bridge to bear stress together under seismic action, fully develops earthquake resistance of all the piers, dissipates seismic energy, can continue to use production and installation technology of an existing unidirectional moving pot type rubber support seat, and is convenient to use in engineering, and convenient to repair after an earthquake.

The invention discloses a moveable connecting structure of an assembled steel structure outer hanging type wall slab, and relates to the technical field of a building structure; an upper layer angle steel and a lower layer angle steel are in vertical frictional slipping connection with the upper layer angle steel and the lower layer angle steel; an upper wing and a lower wing of a H-type steel girder are in horizontal frictional slipping connection with the upper layer angle steel and the lower layer angle steel; the lower layer angle steel is hung at the lower part of the H-type steel girder to limit and adjust the upper layer wall slab; the upper layer angle steel is connected to the upper part of the upper wing of the H-type steel girder to limit and fix the H-type steel girder; a floor slab is arranged at the upper part of an upper wing of the H-type steel girder and supported by the H-type steel girder; through the frictional slipping connection structure, the structure can realize energy consumption and seismic mitigation and greatly improves the side migration resistance of the outer hanging wall slab; when the load is too big under the complex working condition, the structure can dissipate seismic energy and lighten function of the structure earthquake response; during the installation, the horizontal and vertical positions of the wall slab can be conveniently adjusted, so as to ensure that appearance of the whole wall slab meets requirement.

The invention discloses a bridge anti-seismic stop block structure capable of achieving buffering, energy dissipation and collision resistance. The bridge anti-seismic stop block structure comprises a cover beam, a beam body and a plurality of fishhook-shaped steel bars. Friction pendulum supports are arranged on the top face of the cover beam. The beam body is supported on the friction pendulum supports. The two ends of the cover beam extend upwards to form stop blocks correspondingly. One segments of the fishhook-shaped steel bars are fixedly embedded in the stop blocks. A layer of rubber is wrapped outside the exposed segment of each fishhook-shaped steel bar. In the strong earthquake process, according to the bridge anti-seismic stop block structure, through bending deformation of the multiple fishhook-shaped steel bars and the out-wrapped rubber layers, the impact function, on the bridge anti-seismic stop blocks, generated when transverse bridge direction displacement of the beam body is too large can be buffered effectively, earthquake energy is dissipated, transverse bridge direction beam falling accidents are reduced, and the anti-seismic performance of a whole bridge structure is improved.

The invention discloses a beam-end connecting device of a novel structure and provides a connecting device capable of resetting easily, replaceable, resistant to bending and capable of dissipating energy. The connecting device is applied to the beam-end portion of a framework beam or a coupling beam in a building structure or a bridge structure, the connecting device is activated when the beam-end generates bending moment to a certain degree, and a damper of the connecting device can remarkably improve the structure damping level. Under the condition that the structure bears general power loads, the beam-end connecting device of the novel structure provides damping, thereby assisting in controlling storey drift, speed and acceleration. Under the condition that the structure bears high-intensity power loads, the connecting device has self-adaptability to a certain degree, after the storey drift angle is larger than a preset critical value, the connecting device can centralizeearthquake damage to a replaceable intensity weakening section of the connecting device, ductility and energy dissipation are provided through buckling deformation of flanges, and the overall stability of the structure is ensured. Besides, the connecting device is replaceable and provided with a rotation reset button, thereby restoring post-earthquakeresidual drift easily, being convenient to replace and effectively reducing all kinds of losses caused after an earthquake.

The invention discloses a high-damping rubber ring limiting one-way movable pot type rubber bearing which comprises a one-way movable pot type rubber bearing body. The high-damping rubber ring limiting one-way movable pot type rubber bearing is characterized in that top plate extension plates are fixedly connected with the two unmovable sides of a top plate of the one-way movable pot type rubber bearing body, and a stop dog is hung on the bottom face of each top plate extension plate; bottom tray extension plates are fixedly connected with the two unmovable sides of a bottom tray of the one-way movable pot type rubber bearing body, two adaptive supports are welded to the upper surface of each bottom tray extension plate, and high-damping rubber rings are fixed on the two opposite faces of the two corresponding adaptive supports; each stop dog is arranged between the two corresponding high-damping rubber rings, and intervals between each stop dog and the two corresponding high-damping rubber rings both ranges from 50 mm to 300 mm. According to the high-damping rubber ring limiting one-way movable pot type rubber bearing, under the earthquake action, overlarge displacement of the bearing in the movable direction can be restrained, joint load carrying of all bridge piers of a bridge can be achieved, the anti-quake performance of all the bridge piers is fully exerted, the earthquake energy is dissipated, the production technology and the installation technology of an existing one-way movable pot type rubber bearing can continue to be used, and the engineering application and restoring after an earthquake are convenient.

The invention relates to a prestress orthogonal laminated wood coupled shear wall capable of achieving swinging and self-resetting. The shear wall is characterized by comprising an orthogonal laminated wood coupled wall column (1), orthogonal laminated wood connecting beams (2), a reinforced concrete foundation (3), prestress reinforcing steel bars (4) and connectors (5). The shear wall has the advantages that earthquake resistance is achieved through the swinging and self-resetting of the wall column and the rotation of the connecting beam ends, earthquake energy can be dissipated, residual deformation after an earthquake is small, and component replacement after the earthquake is facilitated by controlling an energy dissipation mechanism and a failure mode; meanwhile, the structure of the coupled shear wall satisfies the external wall hole opening requirements, and the shear wall is simple in structure, convenient in construction and convenient to popularize.

The invention relates to a basic shock isolating system for interconnecting electric equipment. An electric equipment bracket is arranged below the electric equipment; the system comprises a bearing table, a shock isolating device and a base box arranged below the bracket in sequence; and a limiting piece for limiting the position of the bearing table is arranged on the side wall of the base box. The shock isolating device is mounted at the bottom of the base box for reducing the transfer of earthquake energy to the upper electric equipment. The bottom of the shock isolating device is fixed with the base box, and the upper part is connected with the bearing table; meanwhile, limiting spring devices are mounted around the base box for preventing the shock isolating device from generating excessive horizontal displacement under the earthquake effect to cause the damage of the shock isolating device; and the limiting springs can achieve the purposes of cushioning the earthquake effect and consuming the earthquake energy. The shock isolating system has such advantages as convenience for construction and clear shock isolating mechanism, and can effectively protect the safety and the stability of the electric equipment under the earthquake effect.

The invention relates to a seismic energy dissipation hollow floor structure system for the technical field of engineering seismology and seismic energy dissipation. The structure system comprises hollow floors, column bracings and damping units, wherein the hollow floors are rigidly connected with or hinged to frame columns and the column bracings; the column bracings can be multiple types of structural components; the damping units are arranged at joints of the bracings and the hollow floors. According to the structure system, the hollow floors are cast-in-situ hollow floors, so that the free height of a room is increased, the story height is reduced, the problem of relatively lower lateral rigidity of an ordinary hollow floor system is solved, and relatively higher structural flexibility is achieved; the energy dissipation capability of damping elements under the seismic action can be fully used for dissipating seismic energy, so that damage of an earthquake to a main structure system is effectively reduced; in addition, the horizontal structural rigidity is not required to be improved, and the used structural space is enlarged; seismic energy dissipation units formed by the column bracings and the damping units are arranged unidirectionally and bidirectionally in the hollow floor structure system, so that the seismic requirements of the structure system can be met, meanwhile, the space of a building space can be fully utilized, and functions of the floor hollows and dampers are fully utilized.

The invention provides a beam friction support, and the support comprises an upper base plate, a lower base plate and a friction sliding block arranged between the upper base plate and the lower baseplate in a sliding mode; the friction sliding block is a rubber sliding block, and the upper end face and the lower end face of the rubber sliding block are planes so that the rubber sliding block canbe matched with the upper base plate and the lower base plate to form a plane friction pair. The sliding friction coefficient a between the rubber sliding block and the lower base plate is less thanthe sliding friction coefficient b between the rubber sliding block and the upper base plate. The support has the advantages of being prevented from being damaged, good in vibration reduction effect,simple in structure and the like.

The invention provides a girder-falling prevention device. The device is arranged on a bridge girder base body and comprises a fixed guide rail, a fixed device and an elastic-plastic device, wherein the fixed guide rail is connected with a bridge girder body; the fixed device is connected with the base body; and the elastic-plastic device comprises a first end in clearance fit with the fixed guide rail and a second end connected with the fixed device. The device has the following advantages that: the device has a simple and reliable structure, is clear in force transferring and bearing and can achieve the effects of preventing girder from falling, dissipating seismic energy and resisting drawing, thus protecting the bridge girder in multiple directions, reducing seismic damage on the bridge girder and guaranteeing life and property safety.

The invention belongs to the technical field of seismic reduction and isolation of building structures and particularly relates to a multistage triggering fabricated seismic-isolation support for connection of a skirt steel roof and a high-rise building. The multistage triggering fabricated seismic-isolation support comprises a sliding part fixed to a pre-embedded steel plate of the high-rise building and a seismic-isolation part fixed to a bottom end plate of the skirt steel roof, and the sliding part and the seismic-isolation part are assembled to form a multistage triggering fabricated structure. The multistage triggering fabricated seismic-isolation support has the beneficial effects that the multistage triggering fabricated seismic-isolation support has the advantages of staged seismic isolation, fabricated connection, simple principle, reliable performance, convenient replacement and the like; staged seismic-isolation control of connection of the skirt steel roof and the high-rise building can be achieved; the advantages that small earthquakes are isolated through sliding of the sliding part, medium and large earthquakes are dually isolated through the sliding part and the seismic-isolation part, self-resetting of the support after the earthquakes is achieved, and the fabrication can be achieved are achieved; and the multistage triggering fabricated seismic-isolation support can be widely applied to connection of the skirt roof and the main building and has wide application prospects in the field of cast-in-situ structures and fabricated structures.