CN212077600U - Shock attenuation power consumption assembled sways pier component - Google Patents
Shock attenuation power consumption assembled sways pier component Download PDFInfo
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- CN212077600U CN212077600U CN202020025953.4U CN202020025953U CN212077600U CN 212077600 U CN212077600 U CN 212077600U CN 202020025953 U CN202020025953 U CN 202020025953U CN 212077600 U CN212077600 U CN 212077600U
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Abstract
The utility model relates to the technical field of anti-seismic safety, in particular to a shock-absorbing energy-consuming assembled swinging pier component, which comprises a steel box, a swinging structure, a rubber layer and a steel bushing, wherein the steel box is a box body structure with a hollow top opening, and the longitudinal section of the steel box is formed by combining a square structure at the upper part and an isosceles trapezoid structure with a wide upper part and a narrow lower part; the bottom of the steel box is fixed on a base steel plate, and the base steel plate is connected with a base bearing platform below the base steel plate through an anchoring bolt; the swing structure is sleeved in the steel box, and a gap for arranging a rubber layer is arranged between the swing structure and the steel box; the steel sleeve is sleeved on the connecting column at the axial top of the swing structure, and the swing structure is connected with a pier through the steel sleeve and pier reinforcing steel bars arranged along the circumferential direction of the steel sleeve. The utility model discloses make the pier take place to sway in order to release the moment of flexure at the bottom of mound top and the mound, simple structure, the atress is clear and definite, has and imitates the power consumption ability and from the reset ability.
Description
Technical Field
The utility model relates to an antidetonation safety technical field especially relates to a pier component is swayd to shock attenuation power consumption assembled.
Background
In recent years, destructive earthquakes frequently occur in China, and particularly after 21 century, the earthquake outbreak frequency is obviously increased. The bridge structure is easy to be damaged in earthquake, and the bridge is used as a junction project of a traffic life line and is in an extremely important position during rescue after earthquake. Therefore, guaranteeing the seismic performance of the bridge and reducing the seismic risk are one of the core tasks of disaster prevention.
The bridge pier is an important component of the bridge structure, and once damaged, the stability and the normal use function of the bridge are seriously affected, so that the bridge pier is one of important factors affecting the anti-seismic performance of the bridge pier. The ductility earthquake-resistant design is mostly adopted in the earthquake-resistant design of the pier at present, but the damage replacement and repair of the plastic hinge area of the pier are difficult, particularly for medium and short piers, shearing damage is easy to occur, the increase of the section area and the increase of the steel bar consumption are obviously uneconomical, and the ductility cannot be guaranteed. The existing prefabricated section splicing type bridge piers mostly adopt the same prefabricated bridge section splicing technology, have good axial shock absorption capacity, are extremely easy to damage along joints when being subjected to accidental loads such as earthquakes, impacts and the like, have great residual deformation after disasters, and greatly reduce the anti-seismic performance of the piers.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a shock attenuation power consumption assembled and sway pier component, sway the structure in the shake and take place to sway in order to release the moment of flexure at the bottom of mound top and the mound, shake the back, only need change the shear force key and can come into operation.
In order to realize the utility model discloses a purpose, the utility model discloses a technical scheme do:
the utility model discloses a damping and energy-consuming assembled swinging pier component, which comprises a steel box, a swinging structure, a rubber layer and a steel sleeve,
the steel box is of a hollow box body structure with an opening at the top, and the longitudinal section of the steel box is formed by combining a square structure at the upper part and an isosceles trapezoid structure with a wide upper part and a narrow lower part; the bottom of the steel box is fixed on a base steel plate, and the base steel plate is connected with a base bearing platform below the base steel plate through an anchoring bolt;
the swing structure is sleeved in the steel box, and a gap for arranging a rubber layer is arranged between the swing structure and the steel box;
the steel sleeve is sleeved on the connecting column at the axial top of the swing structure, and the swing structure is connected with an upper pier through the steel sleeve and pier reinforcing steel bars arranged along the circumferential direction of the steel sleeve.
The steel jacket is of an annular structure, and a well-shaped spacing piece is arranged in the middle of the steel jacket.
A shear key is arranged between the top of the inner cavity of the steel box and the top of the swing structure, and a gap is formed between the shear key and the end part of the rubber layer.
The shear key is of a cylindrical structure, and the middle part of the outer wall of the shear key is provided with a groove arranged along the circumferential direction of the shear key.
The steel box is fixedly provided with a supporting plate along the circumferential direction.
And a water baffle is arranged between the connecting column of the swing structure and the top of the steel box.
A construction method of a shock-absorbing energy-consuming assembled type swing pier component comprises the following steps,
s1: constructing a foundation bearing platform: and pouring concrete at the bottom of the bearing platform until the bottom of the reinforcing mesh, binding local reinforcing steel bars to form the reinforcing mesh, and arranging erection reinforcing steel bars between the two layers of reinforcing meshes to ensure that the position of the fixed reinforcing steel bars is correct. Fixing the embedded steel plate, and continuously pouring concrete on the top part of the bearing platform;
s2: the installation of the damping and energy-consuming assembled swing pier component: the damping and energy-consuming assembled type swinging pier component is placed on a bearing platform, and the anchoring bolt is screwed and fixed, so that the swinging pier component and the bearing platform can be effectively connected;
s3: and (3) constructing an upper structure: the method comprises the steps of configuring pier reinforcing steel bars, erecting a pier body outer formwork, pouring concrete in a steel box, pouring concrete on a bridge body, demolding and curing the concrete.
In step S3, the disposing of the pier reinforcement bar: longitudinal ribs are arranged along the circumferential direction of the steel sleeve, and stirrups are arranged on the longitudinal ribs according to design requirements;
erecting an outer template of the pier body: calculating the number of the template blocks according to the size of the pier body, and sequentially erecting the templates according to the template correspondence and the principle that the shrinkage templates and the wedge-shaped templates are uniformly staggered;
pouring concrete of the bridge body: in the pouring process, sundries in the template are removed in time, and concrete is poured in layers and vibrated.
The beneficial effects of the utility model reside in that:
1. the utility model realizes that the pier generates swing motion under the action of earthquake, converts kinetic energy into gravitational potential energy, reduces the earthquake period of the structure, dissipates earthquake energy, and has excellent earthquake resistance;
2. the utility model can make the bridge pier swing with controllable amplitude by the limiting function of the steel box, which is beneficial to the stability of the upper structure;
3. the utility model is an assembly type bridge pier, which has simple structure, clear stress and convenient construction and installation;
4. the bottom of the swing structure of the utility model is an enlarged reinforced concrete section, which can ensure the rigidity of the bridge structure in the normal use state;
5. when the swing structure of the utility model is inclined, the gravity of the upper structure is far larger than the vertical component of the supporting force provided by the inclined plane of the steel box, so that the swing structure has stronger self-resetting capability, effectively controls the residual deformation of the pier, and ensures the normal use capability of the pier after the earthquake;
6. the utility model discloses because pier-steel case are the disengaging system, can effectively release pier bottom moment of flexure, reduce the seismic force that the pier structure bore, have better shock insulation effect, also avoided the shearing of junction to destroy simultaneously. Under the condition of not increasing the cross-sectional area and the using amount of the steel bar, the steel bar has better ductility;
7. the utility model discloses realize easily, application scope is wide, has good economic benefits.
8. The utility model can meet the requirements of multi-level fortification and the rigidity requirement in normal work; the displacement is limited by the shear key under the condition of an earthquake, so that the stability is kept; energy consumption and shock absorption in rare earthquake can be realized, and self-reset can be realized.
9. The utility model arranges the support plates along the circumference of the swing pier, which greatly increases the stability of the pier;
10. the utility model discloses be inclined plane face-face contact when the structure sways, bearing area is great, and effective dispersed pressure reduces because of stress concentration causes the possibility of marginal concrete crushing.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
In the figure: 1 steel case, 2 sway structures, 3 rubber layers, 4 steel casings, 5 backup pads, 6 anchor bolts, 7 breakwaters, 8 pier reinforcing bars, 9 basic cushion caps, 10 shear key, 11 base steel sheets.
Detailed Description
The following further description of the present invention:
referring to figures 1-2 of the drawings,
the utility model discloses a damping and energy-consuming assembled swinging pier component, which comprises a steel box 1, a swinging structure 2, a rubber layer 3 and a steel sleeve 4,
the steel box 1 is of a hollow box body structure with an opening at the top, and the longitudinal section of the steel box is formed by combining a square structure at the upper part and an isosceles trapezoid structure with a wide upper part and a narrow lower part; the bottom of the steel box 1 is fixed on a base steel plate 11, and the base steel plate 11 is connected with a base bearing platform 9 below the base steel plate through an anchoring bolt 6;
the swing structure 2 is sleeved inside the steel box 1, a gap for arranging the rubber layer 3 is formed between the swing structure and the steel box 1, and the bridge pier can swing freely under the action of strong shock by arranging the rubber layer 3;
the steel jacket 4 is sleeved on the connecting column at the axial top of the swing structure 2, the swing structure 2 is connected with a pier through the steel jacket 4 and pier reinforcing steel bars 8 circumferentially arranged along the steel jacket 4, the steel jacket 4 is of an annular structure, and a spacing piece in a shape like a Chinese character 'jing' is arranged in the middle of the steel jacket 4, so that the steel jacket 4 is of a nine-square lattice structure, and the strength of the connecting part can be ensured.
A shear key 10 is arranged between the top of the inner cavity of the steel box 1 and the top of the swing structure 2, and a gap is arranged between the shear key 10 and the end part of the rubber layer 3.
The shear key 10 is of a cylindrical structure, and a groove arranged along the circumferential direction of the shear key is formed in the middle of the outer wall of the shear key 10 so as to ensure that the groove is cut at the middle of the shear key 10.
The steel case 1 is fixed with backup pad 5 along its circumference installation, greatly increased pier self stability.
A water baffle 7 is arranged between the connecting column of the swing structure 2 and the top of the steel box 1, so that the infiltration of river water or rainwater is prevented.
The working principle is as follows: under the normal use state, the rigidity of the bridge structure under the normal use state can be ensured by the expanded reinforced concrete section at the bottom of the swing structure 2, and the bridge can be ensured not to swing under the condition of slight disturbance due to the dead weight of the upper structure and the constraint force of the shear key 10, so that the stability of the pier is maintained;
under the condition of a common earthquake, the swinging structure 2 slightly swings, the shear keys 10 on the two sides limit displacement and have the self weight of the upper structure to keep the swinging structure stable under the condition of the common earthquake;
in rare earthquakes, the shear keys 10 are cut off, and the bridge piers can swing under the action of the earthquake force due to gaps between the swing structure 2 and the steel box 1; taking the pier inclining to the left as an example, under the action of earthquake force, the pier extrudes the left rubber layer 3 to incline to the left, the upper structure is lifted, kinetic energy is converted into gravitational potential energy, pressure is borne by the left inclined surface and the left vertical plane together, and at the moment, the gravity of the upper structure is far greater than the vertical component of the supporting force provided by the inclined surface of the steel box 1, so that the self-resetting capability is strong; due to the limiting effect of the steel box 1, the swing amplitude of the steel box is controllable, and the energy dissipation and shock absorption purposes are realized through the swing of the bridge piers; the swing structure-steel box separation system has the function of blocking the downward transmission of seismic waves and has the shock insulation function.
The construction method comprises the following steps of,
1. constructing a foundation bearing platform: and pouring concrete at the bottom of the bearing platform until the bottom of the reinforcing mesh, binding local reinforcing steel bars to form the reinforcing mesh, and arranging erection reinforcing steel bars between the two layers of reinforcing meshes to ensure that the position of the fixed reinforcing steel bars is correct. Fixing the embedded steel plate, and continuously pouring partial concrete on the top of the bearing platform.
2. The installation of the damping and energy-consuming assembled swing pier component: the damping and energy-consuming assembled type swing pier component is placed on the bearing platform, the anchor bolt is screwed and fixed, and the swing pier component and the bearing platform can be effectively connected.
3. And (3) constructing an upper structure:
3.1, configuring pier reinforcing steel bars: the longitudinal bars are arranged along the circumferential direction of the steel sleeve, and the stirrups are arranged on the longitudinal bars according to the design requirements.
3.2 erecting the pier body external template: and calculating the number of the template blocks according to the size of the pier body, and sequentially erecting the templates according to the template correspondence and the principle that the shrinkage templates and the wedge-shaped templates are uniformly staggered.
3.3 erecting the pier body external template: and calculating the number of the template blocks according to the size of the pier body, and sequentially erecting the templates according to the template correspondence and the principle that the shrinkage templates and the wedge-shaped templates are uniformly staggered.
3.4 pouring bridge body concrete: in the pouring process, sundries in the template are removed in time, and concrete is poured in layers and vibrated.
3.5 demolding and curing concrete
The above mentioned is only the embodiment of the present invention, not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings or the direct or indirect application in the related technical field are included in the patent protection scope of the present invention.
Claims (6)
1. The utility model provides a pier component is swayd to shock attenuation power consumption assembled which characterized in that: comprises a steel box (1), a swing structure (2), a rubber layer (3) and a steel sleeve (4),
the steel box (1) is of a hollow box body structure with an opening at the top, and the longitudinal section of the steel box is formed by combining a square structure at the upper part and an isosceles trapezoid structure with a wide upper part and a narrow lower part at the lower part; the bottom of the steel box (1) is fixed on a base steel plate (11), and the base steel plate (11) is connected with a foundation bearing platform (9) below the base steel plate through an anchor bolt (6);
the swing structure (2) is sleeved inside the steel box (1), and a gap for arranging the rubber layer (3) is formed between the swing structure and the steel box (1);
the steel sleeve (4) is sleeved on a connecting column at the axial top of the swing structure (2), and the swing structure (2) is connected with an upper pier through the steel sleeve (4) and pier reinforcing steel bars (8) circumferentially arranged along the steel sleeve (4).
2. A shock-absorbing and energy-dissipating fabricated pier element according to claim 1, wherein: the steel sleeve (4) is of an annular structure, and a well-shaped spacer is arranged in the middle of the steel sleeve.
3. A shock-absorbing and energy-dissipating fabricated pier element according to claim 2, wherein: a shear key (10) is arranged between the top of the inner cavity of the steel box (1) and the top of the swing structure (2), and a gap is formed between the shear key (10) and the end part of the rubber layer (3).
4. A shock-absorbing and energy-dissipating fabricated pier element according to claim 3, wherein: the shear key (10) is of a cylindrical structure, and a groove arranged along the circumferential direction of the shear key is formed in the middle of the outer wall of the shear key.
5. A shock-absorbing and energy-dissipating fabricated pier element as claimed in claim 4, wherein: the steel box (1) is fixedly provided with a support plate (5) along the circumferential direction.
6. A shock-absorbing and energy-dissipating fabricated pier element as claimed in claim 5, wherein: a water baffle (7) is arranged between the connecting column of the swing structure (2) and the top of the steel box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020025953.4U CN212077600U (en) | 2020-01-07 | 2020-01-07 | Shock attenuation power consumption assembled sways pier component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020025953.4U CN212077600U (en) | 2020-01-07 | 2020-01-07 | Shock attenuation power consumption assembled sways pier component |
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| CN212077600U true CN212077600U (en) | 2020-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020025953.4U Expired - Fee Related CN212077600U (en) | 2020-01-07 | 2020-01-07 | Shock attenuation power consumption assembled sways pier component |
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| CN (1) | CN212077600U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074756A (en) * | 2020-01-07 | 2020-04-28 | 南昌大学 | Damping and energy-consuming assembled type swing pier component and construction method thereof |
-
2020
- 2020-01-07 CN CN202020025953.4U patent/CN212077600U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074756A (en) * | 2020-01-07 | 2020-04-28 | 南昌大学 | Damping and energy-consuming assembled type swing pier component and construction method thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201204 Termination date: 20220107 |