Disclosure of Invention
The invention provides a frame structure with an anti-seismic reinforcing device, which has the advantages of convenient and quick construction, strong and stable system energy consumption, simple maintenance and self-resetting capability, can be repeatedly used, and effectively improves the anti-seismic performance of the original frame structure.
The technical scheme provided by the invention is as follows:
the utility model provides a frame construction with antidetonation reinforcing apparatus, includes frame construction and antidetonation reinforcing apparatus, antidetonation reinforcing apparatus includes the spliced pole, from restoring to the throne attenuator subassembly, horizontal joist and two bracing pieces, wherein:
the top of the connecting column is connected with the middle of an upper-layer frame beam of the frame structure through an upper connecting structure, the self-resetting damper assembly is fixedly connected to the connecting column, the connecting column and the self-resetting damper assembly are located above the horizontal joist, the bottom of the connecting column is connected with the top of the horizontal joist, and the self-resetting damper assembly is connected with the top of the horizontal joist;
the two support rods are respectively positioned at the left side and the right side below the horizontal joist, and the left side and the right side of the bottom of the horizontal joist are respectively connected with the tops of the support rods at the left side and the right side; the bottoms of the supporting rods on the left side and the right side are respectively connected with beam column nodes on the left side and the right side of the bottom of the frame structure through lower connecting structures;
and the upper connecting structure and the lower connecting structure are both assembled detachable connecting structures.
Furthermore, the bottom of the connecting column is connected with the top of the horizontal joist through a beam-column connecting structure, the beam-column connecting structure comprises a shear-resistant plate and two shear-resistant plate bolts, the bottom of the shear-resistant plate is fixedly connected with the top of the horizontal joist, two V-shaped holes are formed in the shear-resistant plate, two shear-resistant plate bolt holes are formed in the bottom of the connecting column, and the two shear-resistant plate bolts respectively penetrate through the V-shaped holes and the shear-resistant plate bolt holes to connect the bottom of the connecting column with the shear-resistant plate.
Furthermore, the upper side edge of the V-shaped hole is in the shape of an upward convex arc, the distance between the left side edge and the right side edge of the V-shaped hole gradually decreases from top to bottom, and the lower side edge of the V-shaped hole is in the shape of a downward concave arc.
Furthermore, the self-resetting damper assembly is connected with the top of the horizontal joist through a damper connecting structure, the damper connecting structure comprises rigid connecting rods with threads at the upper end and the lower end, vertical through holes are formed in the self-resetting damper assembly, damper connecting holes corresponding to the vertical through holes are formed in the top of the horizontal joist, the rigid connecting rods penetrate through the vertical through holes and the damper connecting holes, and the self-resetting damper assembly is connected with the top of the horizontal joist through nuts at the upper end and the lower end of the rigid connecting rods.
Furthermore, the number of the self-resetting damper assemblies is two, the two self-resetting damper assemblies are respectively positioned on the left side and the right side of the connecting column, and the inner sides of the two self-resetting damper assemblies are respectively fixedly connected with the left side and the right side of the connecting column; each self-resetting damper assembly comprises a horizontal bottom plate, a horizontal top plate is arranged right above the horizontal bottom plate, the outer sides of the horizontal bottom plate and the horizontal top plate are connected through a vertical side plate, and a plurality of self-resetting dampers are arranged in a space defined by the horizontal bottom plate, the horizontal top plate and the vertical side plate of each self-resetting damper assembly;
the number of the vertical through holes is the same as that of the self-resetting dampers, and each vertical through hole comprises a top plate through hole section, a damper through hole section and a bottom plate through hole section which are respectively arranged on the horizontal top plate, the self-resetting dampers and the horizontal bottom plate.
Furthermore, the upper connecting structure comprises a connecting plate and a connecting plate bolt, and the top of the connecting plate is fixedly connected with the middle part of the upper-layer frame beam of the frame structure;
the connecting plate is provided with a vertical long round hole, the top of the connecting column is provided with a connecting plate bolt hole, and the connecting plate bolt penetrates through the long round hole and the connecting plate bolt hole to connect the connecting plate with the top of the connecting column.
Furthermore, the left side and the right side of the bottom of the horizontal joist are respectively connected with the tops of the support rods on the left side and the right side through a beam rod connecting structure; the beam rod connecting structures comprise ear plates and ear plate hydrant holes, the ear plates of the two beam rod connecting structures are respectively fixed at the left side and the right side of the bottom of the horizontal joist, the ear plates are provided with ear plate hydrant holes, the top of the supporting rod is provided with ear plate hinge holes, and the ear plate hydrant penetrates through the ear plate hydrant holes and the ear plate hinge holes to hinge the top of the supporting rod and the ear plates;
the lower connecting structure comprises node plates and node plate hydrant structures, the node plates of the two lower connecting structures are respectively fixed on beam column nodes on the left side and the right side of the bottom of the frame structure, node plate hydrant holes are formed in the node plates, node plate hinge holes are formed in the bottom of the supporting rod, and the node plate hydrant structures penetrate through the node plate hydrant holes and the node plate hinge holes to enable the bottom of the supporting rod to be hinged to the node plates.
Furthermore, the frame structure is a steel frame structure, the top of the connecting plate is welded with the middle part of the lower flange of the upper-layer steel frame beam of the steel frame structure, and the gusset plate is welded with the beam column node;
or, the frame construction is concrete frame construction, the connecting plate top with the middle part of concrete frame beam bottom of concrete frame construction's upper strata is passed through the bar planting and is connected, the gusset plate with the beam column node passes through the bar planting and connects.
Furthermore, the connecting column comprises a connecting column web plate, the connecting column web plate is vertically arranged and is parallel to the plane of the frame structure, and the left side and the right side of the connecting column web plate are respectively connected with a connecting column flange which is vertical to the connecting column web plate;
the inner sides of the two self-resetting damper assemblies are welded on the connecting column flanges on the left side and the right side of the connecting column web, the connecting plate bolt holes are formed in the top of the connecting column web, and the shear plate resisting bolt holes are formed in the bottom of the connecting column web.
Furthermore, the horizontal joist comprises a joist web, the joist web is horizontally arranged and is parallel to the plane of the frame structure, and the upper end and the lower end of the joist web are respectively connected with a joist flange vertical to the joist web;
the left side and the right side of the bottom of the horizontal joist are chamfered, end plates are arranged on the chamfers, and the ear plates are fixed on the end plates; the bottom of the shear resistant plate is welded with a joist flange at the upper end of the horizontal joist, and the damper connecting hole is formed in the joist flange at the upper end of the horizontal joist.
Furthermore, every connecting plate, shear resisting plate, otic placode and gusset plate all include the two-layer steel sheet that the certain clearance in interval set up, vertical slotted hole, V-arrangement hole, otic placode embolism eliminating hole and gusset plate embolism eliminating hole are seted up respectively on the two-layer steel sheet of connecting plate, shear resisting plate, otic placode and gusset plate, the connecting column top connect the column bottom the bracing piece top with the bracing piece bottom is located respectively in the clearance between the two-layer steel sheet of connecting plate, shear resisting plate, otic placode and gusset plate.
The invention has the following beneficial effects:
1. the invention converts the horizontal force added on the frame structure into the bending energy consumption of the anti-seismic reinforcing device and the energy consumption of the self-resetting damper assembly, thereby consuming the seismic energy. The system has strong and stable energy consumption, can fully exert the performance advantages of each part, better reflects the higher energy dissipation and shock absorption effects of the structural system, greatly improves the bearing capacity and the ductility rigidity of the structure, effectively improves the stress condition of the original frame structure when being influenced by a horizontal earthquake, and improves the anti-seismic performance of the original frame structure.
2. The anti-seismic reinforcing device has the self-resetting performance, the self-resetting damper can be repeatedly used without replacement or repair, the post-seismic repair cost can be greatly reduced, the seismic energy can be better dissipated, the residual deformation is eliminated, the structural damage of the non-replaceable parts in the frame structure is reduced, and the structural damage is reduced.
3. The invention can be used in areas with higher or lower seismic fortification grade, can be used for reinforcing the existing frame structure, and can also be applied to newly built buildings.
4. According to the invention, the anti-seismic reinforcing device and the original frame structure beam column are in an assembled detachable connection structure, so that the installation and construction are flexible, convenient and quick, the construction amount of field operation is reduced, and the influence on the daily life of residents or factories can be effectively reduced; meanwhile, the replacement, the disassembly and the assembly at the later stage are convenient, the maintenance is simple, and the cost is reduced.
5. The invention can be effectively combined with building doors, windows and the like better, is not limited by the doors and windows, can select and replace installation positions according to building function requirements, can reserve more vertical surface spaces for additionally arranging door openings, can be used as door upper beams and the like to be more flexibly applied to the original frame structure, does not influence the beauty of buildings, can increase the bearing capacity on the door openings, and ensures that the structure is firmer.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention provides a frame structure with an anti-seismic reinforcing device, which comprises a frame structure 200 and an anti-seismic reinforcing device 100, wherein the anti-seismic reinforcing device 100 is arranged inside the frame structure 200 to reinforce and resist seismic of the frame structure 200, and the frame structure 200 can be a steel frame structure or a concrete frame structure.
As shown in fig. 1 to 10, the earthquake-resistance strengthening device 100 includes a connection column 1, a self-resetting damper assembly 2, a horizontal joist 3, and two support rods 4, wherein:
the connecting column 1 is a vertically arranged short column, and the top of the connecting column 1 is connected with the middle part of an upper frame beam 201 of the frame structure 200 through an upper connecting structure 5. The self-resetting damper component 2 is fixedly connected to the connecting column 1, and can adopt a fixed connection form such as welding. The connecting column 1 and the self-resetting damper assembly 2 are located above the horizontal joist 3, the bottom of the connecting column 1 is connected with the top of the horizontal joist 3, and the self-resetting damper assembly 2 is connected with the top of the horizontal joist 3.
The two support rods 4 are respectively positioned at the left side and the right side below the horizontal joist 3, and the left side and the right side of the bottom of the horizontal joist 3 are respectively connected with the tops of the support rods 4 at the left side and the right side. The distance between the two support rods 4 becomes wider from top to bottom, so that the two support rods 4 are arranged in a herringbone shape. The bottoms of the support rods 4 on the left and right sides are respectively connected with beam-column joints 202 on the left and right sides of the bottom of the frame structure 200 through lower connecting structures 6.
The upper connecting structure 5 and the lower connecting structure 6 are both assembled detachable connecting structures.
The present invention combines the earthquake-resistant reinforcing apparatus 100 with the frame structure 200 of the building, and consumes the horizontal earthquake load attached to the frame structure 200 of the building through the earthquake-resistant reinforcing apparatus 100, thereby achieving the purpose of earthquake-resistant reinforcement.
The invention has the following beneficial effects:
1. the present invention converts the horizontal force added to the frame structure 200 into bending energy of the anti-seismic reinforcement device 100 itself and energy of the self-resetting damper assembly 2, thereby consuming seismic energy. The system has strong and stable energy consumption, can fully exert the performance advantages of each part, better reflects the higher energy dissipation and shock absorption effects of the structural system, greatly improves the bearing capacity and the ductility rigidity of the structure, effectively improves the stress condition of the original frame structure when being influenced by a horizontal earthquake, and improves the anti-seismic performance of the original frame structure.
2. The earthquake-resistant reinforcing device 100 has the self-resetting performance, the self-resetting damper can be repeatedly used without replacement or repair, the post-earthquake repair cost can be greatly reduced, the earthquake energy can be better dissipated, the residual deformation is eliminated, the structural damage of the non-replaceable parts in the frame structure is reduced, and the structural damage is reduced.
3. The invention can be used in areas with higher or lower seismic fortification grade, can be used for reinforcing the existing frame structure, and can also be applied to newly built buildings.
4. According to the invention, the anti-seismic reinforcing device 100 and the original frame structure beam column are in an assembled detachable connection structure, so that the installation and construction are flexible, convenient and quick, the construction amount of field operation is reduced, and the influence on the daily life of residents or factories can be effectively reduced; meanwhile, the replacement, the disassembly and the assembly in the later period are convenient, the maintenance is simple, and the cost is reduced.
5. The invention can be effectively combined with building doors, windows and the like better, is not limited by the doors and windows, can select and replace installation positions according to building function requirements, can reserve more vertical surface spaces for additionally arranging door openings, can be used as door upper beams and the like to be more flexibly applied to the original frame structure, does not influence the beauty of buildings, can increase the bearing capacity on the door openings, and ensures that the structure is firmer.
In some examples, the aforementioned upper connecting structure 5 adopts a vertically long hole connecting manner, and includes a connecting plate 7 and a connecting plate bolt 8, wherein the top of the connecting plate 7 is fixedly connected with the middle of the upper frame beam 202 of the frame structure 200.
When the frame structure 200 is a steel frame structure, the top of the connecting plate 7 is welded to the middle of the lower flange of the upper steel frame beam of the steel frame structure, and a stiffening rib 43 may be provided in the middle of the upper steel frame beam, as shown in fig. 1. When the frame structure 200 is a concrete frame structure, the top of the connecting plate 7 is connected to the middle of the bottom of the upper concrete frame beam of the concrete frame structure by means of the embedded steel bars, as shown in fig. 2.
A vertical long round hole 9 is formed in the connecting plate 7, a connecting plate bolt hole 10 is formed in the top of the connecting column 1, and the connecting plate bolt 8 penetrates through the long round hole 9 and the connecting plate bolt hole 10 to connect the connecting plate 7 with the top of the connecting column 1.
The connecting column 1 and the connecting plate 7 adopt a traction mechanism with vertical long bolt holes, vertical unbalanced force which is easily generated at the intersection of the connecting column and the upper-layer frame beam 201 is effectively reduced, and structural damage caused by improper stress in the middle of the upper-layer frame beam 201 is solved.
As an improvement of the embodiment of the present invention, the lower connecting structure 6 adopts a hinged connection mode, specifically:
the lower connecting structures 6 comprise node plates 11 and node plate bolts 12, and the node plates 11 of the two lower connecting structures 6 are respectively fixed on beam-column nodes 202 on the left side and the right side of the bottom of the frame structure 200. When the frame structure 200 is a steel frame structure, the gusset plate 11 is welded to the beam-column node 202, and a stiffener 44 may be provided at the beam-column node 202, as shown in fig. 1. When the frame structure 200 is a concrete frame structure, the gusset plate 11 and the beam-column node 202 are connected by planting bars, as shown in fig. 2.
The gusset plate hydrant hole is formed in the gusset plate 11, the gusset plate hinge hole is formed in the bottom of the support rod 4, and the gusset plate hydrant 12 penetrates through the gusset plate hydrant hole and the gusset plate hinge hole to enable the bottom of the support rod 4 to be hinged to the gusset plate 11.
The bottom left and right sides of horizontal joist 3 respectively is connected with the bracing piece 4 top of the left and right sides respectively through a beam pole connection structure 13, and beam pole connection structure 13 also adopts articulated connected mode, and is specific:
the beam rod connecting structures 13 comprise ear plates 14 and ear plate hydrant 15, the ear plates 14 of the two beam rod connecting structures 13 are respectively fixed at the left side and the right side of the bottom of the horizontal joist 3, ear plate hydrant holes 16 are formed in the ear plates 14, ear plate hinge holes are formed in the top of the supporting rod 4, and the ear plate hydrant 15 penetrates through the ear plate hydrant holes 16 and the ear plate hinge holes to hinge the top of the supporting rod 4 with the ear plates 14.
The top end and the bottom end of the support rod 4 are connected with the horizontal joist 3 and the beam column node 202 in a hinged mode, and each hinged part allows certain relative rotation, so that structural damage caused by improper stress is prevented.
The invention is not limited to the connection mode of the connection column 1 and the horizontal joist 3, in one example, the bottom of the connection column 1 is connected with the top of the horizontal joist 3 through a beam column connection structure 17, specifically:
the beam column connecting structure 17 comprises a shear resisting plate 18 and two shear resisting plate bolts 19, the bottom of the shear resisting plate 18 is fixedly connected with the top of the horizontal joist 3, two V-shaped holes 20 are formed in the shear resisting plate 18, two shear resisting plate bolt holes 21 are formed in the bottom of the connecting column 1, and the two shear resisting plate bolts 19 respectively penetrate through the V-shaped holes 20 and the shear resisting plate bolt holes 21 to connect the bottom of the connecting column 1 with the shear resisting plate 18.
When the self-resetting damper deforms, the V-shaped hole 20 allows the connecting column 1 and the horizontal joist 3 to move relatively, and structural damage to the connecting column and the shear resisting plate is prevented.
Preferably, the upper side of the V-shaped hole 20 is in the shape of an upwardly convex circular arc, the distance between the left and right sides of the V-shaped hole 20 gradually decreases from top to bottom to form a V-shape, and the lower side of the V-shaped hole 20 is in the shape of a downwardly concave circular arc.
In the invention, the self-resetting damper assembly 2 is connected with the top of the horizontal joist 3 through the damper connecting structure 42, specifically:
the damper connecting structure 42 comprises rigid connecting rods 22 with threads at the upper end and the lower end, vertical through holes 23 are formed in the self-resetting damper assembly 2, damper connecting holes 24 corresponding to the vertical through holes 23 are formed in the top of the horizontal joist 3, the rigid connecting rods 22 penetrate through the vertical through holes 23 and the damper connecting holes 24, and the self-resetting damper assembly 2 is fixedly connected with the top of the horizontal joist 3 through nuts arranged at the upper end and the lower end of the rigid connecting rods 22.
The number of the self-resetting damper assemblies 2 may be two, the two self-resetting damper assemblies 2 are respectively located at the left and right sides of the joint column 1, and the inner sides of the two self-resetting damper assemblies 2 are respectively fixedly connected with the left and right sides of the joint column 1.
Each self-resetting damper assembly 2 comprises a horizontal bottom plate 25, a horizontal top plate 26 is arranged right above the horizontal bottom plate 25, the outer sides of the horizontal bottom plate 25 and the horizontal top plate 26 are connected through a vertical side plate 27, and a plurality of self-resetting dampers 28 are arranged in a space surrounded by the horizontal bottom plate 25, the horizontal top plate 26 and the vertical side plate 27 of each self-resetting damper assembly 2.
The number of the vertical through holes 23 is the same as that of the self-resetting dampers 28, and each self-resetting damper 28 is fixedly connected with the top of the horizontal joist 3 through the vertical through hole 23, the rigid connecting rod 22 and the nut. Each vertical through hole 23 includes a top plate through hole section 29, a damper through hole section 30 and a bottom plate through hole section 31 which are opened on the horizontal top plate 26, the self-resetting damper 28 and the horizontal bottom plate 25, respectively.
The present invention includes 2 self-resetting damper assemblies 2, each self-resetting damper assembly 2 can include one or more self-resetting dampers 28, and all self-resetting dampers 28 can be arranged in series and/or in parallel. The specification and size of the connecting column 1 and the horizontal joist 3 can be designed and adjusted according to actual conditions, and the anti-seismic performance of the connecting column and the horizontal joist can be better exerted by combining the serial connection and the parallel connection of the self-resetting dampers 28.
In one specific example thereof, each self-resetting damper assembly 2 includes two self-resetting dampers 28, and four self-resetting dampers 28 are symmetrically disposed in the front-rear direction and the left-right direction with respect to the joint column 1.
The invention is not limited to the structure of the self-resetting damper 28, and for example, a self-resetting damper using friction energy dissipation of a wedge-shaped sliding block disclosed in chinese patent document CN110230359A can be used.
The connecting column 1 and the horizontal joists 3 are H-shaped steel structural members, the connecting column 1 comprises a connecting column web 34, the connecting column web 34 is vertically arranged and is parallel to the plane of the frame structure 200, the left side and the right side of the connecting column web 34 are respectively connected with a connecting column flange 35 and 36 which are perpendicular to the connecting column web 34, and the connecting column web 34 and the connecting column flanges 35 and 36 form the H-shaped steel structural members which are vertically arranged.
The inner sides of the two self-resetting damper assemblies 2 are welded to the column flanges 35 and 36 on the left and right sides of the column web 34, and specifically, the inner sides of the horizontal bottom plate 25 and the horizontal top plate 26 are welded to the column flanges 35 and 36.
The connecting plate bolt hole 10 is formed in the top of the connecting column web 34, and the top of the connecting column web 34 is connected with the connecting plate 7 through the connecting plate bolt 8. And the shear-resistant plate bolt holes 21 are formed in the bottom of the connecting column web 34, and the bottom of the connecting column web 34 is connected with the top of the horizontal joist 3 through shear-resistant plate bolts 19.
The horizontal joist 3 comprises a joist web 37, the joist web 37 is horizontally arranged and parallel to the plane of the frame structure 200, the upper end and the lower end of the joist web 37 are respectively connected with a joist flange 38 and a joist flange 39 which are vertical to the joist web 37, and the joist web 37 and the joist flanges 38 and 39 form a horizontally arranged H-shaped steel structural member.
The left side and the right side of the bottom of the horizontal joist 3 are chamfered, end plates 40 are arranged on the chamfers, and the ear plates 14 are fixed on the end plates 40. The bottom of the shear resistant plate 18 is welded with a joist flange 38 at the upper end of the horizontal joist 3, a damper connecting hole 24 is formed in the joist flange 38 at the upper end of the horizontal joist 3, and the self-resetting damper assembly 2 is fixedly connected to the joist flange 38 through a rigid connecting rod 22 and a nut. The horizontal joists 3 may be provided with stiffening ribs 41 for added strength.
Each of the aforementioned connecting plate 7, shear resisting plate 18, ear plate 14 and gusset plate 11 may comprise two layers of steel plates 32, 33 arranged with a certain gap therebetween, as shown in fig. 8-10, and the connecting plate 7 comprises two layers of arc-shaped steel plates. The vertical long round holes 9, the V-shaped holes 20, the lug plate bolt-eliminating holes 16 and the gusset plate bolt-eliminating holes are respectively arranged on two layers of steel plates 32 and 33 of the connecting plate 7, the shear resisting plate 18, the lug plate 14 and the gusset plate 11.
The top of the connecting column 1, the bottom of the connecting column 1, the top of the support rod 4 and the bottom of the support rod 4 are respectively positioned in the gap between the two layers of steel plates 32 and 33 of the connecting plate 7, the shear resisting plate 18, the ear plate 14 and the gusset plate 11.
Specifically, the upper end of a connecting column web 34 of the connecting column 1 is inserted between two layers of steel plates 32 and 33 of the connecting plate 7, the lower end of the connecting column web 34 of the connecting column 1 is inserted between two layers of steel plates of the shear-resistant plate 18, the supporting rod 4 is a round steel tube, the top end and the bottom end of the supporting rod are flattened, and the flattened structures of the bottom end and the top end of the supporting rod 4 are respectively inserted between two layers of steel plates of the ear plate 14 and the gusset plate 11.
Preferably, the surfaces of the components of the earthquake-resistant reinforcing apparatus 100 of the present invention are subjected to fire-proof and rust-proof treatment according to the design requirements.
The construction method of the invention is as follows:
1. each part of the earthquake-proof reinforcing device 100 is prefabricated in a factory, the self-resetting damper assembly 2 is welded on the connecting column 1 in advance, and two layers of steel plates of the shear resisting plate 18 are welded on the horizontal joist 3. And (4) conveying each part to an installation site, and performing fire prevention and rust removal treatment on all steel structure parts.
2. The two gusset plates 11 are respectively spot-welded or connected by means of embedded bars to the beam-column nodes 202 on the left and right sides of the bottom of the frame structure 200.
3. The horizontal joist 3 with the shear resisting plates 18 is temporarily supported by a top bracing support, the bottoms of the two support rods 4 are respectively connected with the two gusset plates 11 through gusset plate bolts 12, and the tops of the two support rods 4 are connected with the ear plates 14 on the end plates 40 of the horizontal joist 3 through ear plate bolts 15.
4. The bottom of the web 34 of the connecting column 1 with the self-resetting damper assembly 2 is connected with the shear-resisting plate 18 on the joist flange 38 at the upper end of the horizontal joist 3 through a shear-resisting plate bolt 19. Each set of self-resetting damper assemblies 2 is inserted into two rigid connecting rods 22 and is connected with the joist flange 38 in a bolt connection mode.
5. The top of a web 34 of the connecting column 1 with the self-resetting damper assembly 2 is connected with a connecting plate 7 through a connecting plate bolt 8, and then the connecting plate 7 is welded with the lower flange of the upper-layer frame beam 201 or is connected through a planting bar. And (4) removing the top bracing bracket after the installation.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.