CN112030726A - Self-resetting bridge pier column structure system with external grading energy consumption devices and construction method - Google Patents
Self-resetting bridge pier column structure system with external grading energy consumption devices and construction method Download PDFInfo
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- CN112030726A CN112030726A CN202010848918.7A CN202010848918A CN112030726A CN 112030726 A CN112030726 A CN 112030726A CN 202010848918 A CN202010848918 A CN 202010848918A CN 112030726 A CN112030726 A CN 112030726A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention discloses a self-resetting bridge pier column structure system with an external grading energy consumption device and a construction method, wherein the self-resetting bridge pier column structure system comprises: the pier is wrapped with pier embedded parts around and borne by a bridge abutment, and the bridge abutment and the pier are connected through unbonded prestressed steel bars; the at least one group of grading energy consumption devices are symmetrically arranged outside two side walls of the bridge pier and are connected with the bridge pier and the bridge abutment; the grading energy consumption device comprises a first energy consumption piece and a second energy consumption piece; the first energy dissipation part comprises a first connecting part which extends longitudinally along the bridge pier; at least one side of the first connecting part is provided with a plurality of energy consumption plates which are arranged along the longitudinal direction; the second energy dissipation part comprises a second connecting part which extends longitudinally along the bridge pier; the second main body part is provided with a plurality of baffles corresponding to the energy consumption plates; a plurality of energy consumption boards are arranged between the plurality of baffles in a penetrating mode, and gaps are reserved between the energy consumption boards and the baffles. The invention enhances the energy consumption strength of the self-resetting bridge pier column structure system and reduces the repair time and repair cost after the earthquake.
Description
Technical Field
The invention belongs to the field of bridge engineering, and particularly relates to a self-resetting bridge pier column structure system with an external grading energy consumption device and a construction method.
Background
At present, the bridge earthquake-resistant design at home and abroad mainly adopts a ductility design concept, allows the bridge pier to enter plasticity, and dissipates earthquake energy through concrete cracking and steel bar yielding in a plastic hinge area. Earthquake damage investigation shows that the earthquake-proof design is carried out according to the ductility of the bridge pier, although the bridge is not easy to collapse in an earthquake, under the action of strong earthquake, the plastic hinge area of the bridge pier is seriously damaged, and the bridge pier can generate overlarge residual displacement. Because the traditional bridge pier is seriously damaged under the action of a strong earthquake, the traditional bridge pier needs to be reinforced or dismantled for a long time after the earthquake, the normal use function of the traditional bridge pier is seriously influenced, huge economic loss is caused, and huge obstruction is brought to the recovery of the urban traffic function after the earthquake. In order to improve the use function of a post-earthquake bridge structure and quickly recover a traffic life line, a bridge earthquake-resistant design theory and method based on performance are rapidly developed, and a plurality of scholars at home and abroad design a series of self-resetting pier structures, wherein the pier structures can consume earthquake energy through prestressed reinforcements or dampers and can also keep a good state after an earthquake. But also bring some problems simultaneously, its ability to consume seismic energy needs to be improved, and a lot of energy dissipation sways pier foot concrete and destroys seriously, has brought the difficulty for the work of antidetonation reinforcement. There is a great need to develop a self-resetting bridge pier column structure system of an energy dissipation device which can provide enough compressive strength in strong earthquake, has an energy dissipation effect and can be replaced in time after being damaged.
Disclosure of Invention
The invention provides a self-resetting bridge pier column structure system with an external grading energy consumption device and a construction method for solving the technical problems in the background art.
The technical scheme of the invention is as follows:
the utility model provides an external hierarchical power consumption device's from restoring to throne bridge pier column structure system, includes:
the pier is wrapped with pier embedded parts around;
the abutment is arranged below the pier and used for bearing the pier, and the abutment and the interior of the pier are connected through unbonded prestressed steel bars with an elastic reset function;
the at least one group of grading energy consumption devices are symmetrically arranged outside two side walls of the bridge pier and are connected with the bridge pier and the bridge abutment; the grading energy consumption device comprises a first energy consumption piece and a second energy consumption piece;
the first energy dissipation part comprises a first connecting part which extends longitudinally along the bridge pier, and one end of the first main body connecting part is connected with the bridge pier; at least one side of the first connecting part is provided with a plurality of energy consumption plates which are arranged along the longitudinal direction;
the second energy dissipation part comprises a second connecting part which extends longitudinally along the bridge pier, and the second connecting part is connected with the bridge abutment; the second main body part is provided with a plurality of baffle plates corresponding to the energy dissipation plates; the energy dissipation plates penetrate through the baffle plates, and gaps are reserved between the energy dissipation plates and the baffle plates.
Preferably, a plurality of energy dissipation plates are arranged on two sides of the first energy dissipation part, and the second energy dissipation parts are correspondingly arranged on two sides of the first energy dissipation part.
Further preferably, the energy dissipation plates on both sides of the first energy dissipation member are symmetrical to each other.
Further preferably, two groups of the graded energy consumption devices 3 are arranged, and the two groups of the graded energy consumption devices 3 are arranged along the extending direction of the bridge.
Further preferably, the second connecting part comprises at least one connecting part extending longitudinally along the pier, and a plurality of baffles are arranged on the connecting part longitudinally; the baffle is provided with a plurality of connecting pieces, and the connecting pieces are arranged along the periphery of the baffle.
Further preferably, the bridge abutment is composed of an upper steel plate, a lower steel plate and a connecting steel plate arranged between the upper steel plate and the lower steel plate, and the bridge pier is installed on the upper steel plate.
Further preferably, the bottom embedded part is embedded in the bottom of the pier, the bottom embedded part faces towards the abutment and protrudes to form a first limiting part, the middle part of the upper steel plate faces towards the inner concave part of the lower steel plate to form a second limiting part correspondingly matched with the first limiting part, and the first limiting part is embedded in the second limiting part and used for limiting the side movement of the pier.
Preferably, the first connecting part is connected with the pier through an ear plate, bolt holes are reserved in the upper end of the first connecting part and the ear plate, and the first connecting part is detachably connected with the ear plate through bolts; bolt holes are reserved in the bottom of the second connecting portion and the upper steel plate of the bridge abutment, and the second connecting portion is detachably connected with the bridge abutment through high-strength bolts.
Preferably, a steel bar hole is reserved in the bridge pier and the bridge abutment when the bridge pier and the bridge abutment are prefabricated, and the unbonded prestressed steel bars penetrate through the steel bar hole, penetrate through the bridge pier and the bridge abutment and are anchored on the bridge abutment.
A construction method of a self-resetting bridge pier column structure system with an external graded energy consumption device, which is used for processing the self-resetting bridge pier column structure system with the external graded energy consumption device in any one of claims 1 to 9, and is characterized by comprising the following concrete construction steps:
s1, constructing the bridge pier and the bridge abutment in a cast-in-place or prefabricated mode; reserving a steel bar pore passage in the bridge pier and the bridge abutment during pouring, wherein the steel bar pore passage of the bridge abutment is strictly aligned with the steel bar pore passage of the bridge pier; embedding lug plates on the side walls of the piers;
s2: the bridge pier and the bridge abutment are installed in a butt joint mode, and meanwhile the first energy dissipation piece is connected with the bridge pier; the plurality of baffles of the second energy dissipation member are connected with the energy dissipation plate in an inserting mode, and the second energy dissipation member is installed on the bridge abutment;
and S3, penetrating and connecting the unbonded prestressed steel bars with the pier and the abutment through the reserved steel bar hole and anchoring the unbonded prestressed steel bars to the abutment to complete the construction of the self-resetting bridge pier column structure system.
The invention provides a construction method of a self-resetting bridge pier column structure system with an external graded energy consumption device, which has the following advantages and positive effects compared with the prior art:
1. the self-recovery function of the pier nodes is realized by arranging the unbonded prestressed reinforcement, and the stable energy consumption of the pier nodes is realized by arranging the replaceable graded energy consumption device; when an earthquake occurs, the bridge pier deflects and inclines left and right along the width direction of the bridge, the energy consumption plate collides with the baffle plate and generates plastic deformation at the moment, and the energy input into the bridge pier column structure system by the earthquake is consumed, so that the bridge pier column structure system is always maintained in an elastic state, and the bridge pier column structure system is effectively protected; the energy consumption plates and the baffles which are longitudinally arranged realize graded energy consumption, the uppermost energy consumption plate is stressed maximally in the deflection and inclination process of the pier, and then the energy consumption plates gradually and graded consume energy, so that the stressed pressure is effectively shared, the service life of an energy consumption device is prolonged, and the energy consumption capability of a bridge pier column structure system is improved; in addition, the grading energy consumption device is detachably connected with the bridge pier and the bridge abutment, so that the grading energy consumption device can be quickly replaced after being damaged, the repairing time after the earthquake is greatly shortened, and the repairing cost is reduced.
2. The graded energy dissipation device comprises a first energy dissipation part and a second energy dissipation part, wherein the energy dissipation plates and the baffle plates are mutually penetrated and a gap is reserved between the energy dissipation plates and the baffle plates, and the energy dissipation plates and the baffle plates are of a solid structure which is not integrally manufactured, so that the energy dissipation components have certain deformation allowance and are subjected to micro deformation and energy dissipation by mutual collision when stressed, a certain buffer effect is achieved, the energy dissipation components are effectively prevented from being impacted by a large force in a short time, and the service life of the energy dissipation components is effectively prolonged; and the first energy dissipation part and the second energy dissipation part which are subjected to micro deformation can be automatically reset, so that the grading energy dissipation device is not damaged after the pier is subjected to multiple micro shocks, and the energy dissipation capability is excellent.
Drawings
The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic view of a self-resetting bridge pier column structure system with an external graded energy consumption device according to the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural diagram of a staged energy dissipation device according to the present invention;
FIG. 4 is a schematic structural view of an abutment according to the present invention;
FIG. 5 is a schematic view of the connection between the graded energy dissipation device and the pier embedded parts and the abutment.
Description of the symbols:
1-bridge pier; 2-embedded parts of piers; 3-grading energy consumption devices; 301-a first energy consuming member; 3011-a first connection; 3012-energy consumption board; 302-a second energy consuming component; 3021-a second connection; 3022-baffle; 3023-a connector; 4-abutment; 401-upper steel plate; 402-lower steel plate; 403-connecting steel plates; 404-a first limiting part; 405-a second stop; 5-unbonded prestressed reinforcement; 6-steel bar pore canal; 7-bottom embedded part; 8-longitudinal ribs; 9-ear plate.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
Referring to fig. 1 to 5, the embodiment provides a self-resetting bridge pier column structure system with an external graded energy consumption device, including: the pier comprises a pier 1, wherein pier embedded parts 2 are wrapped around the pier 1; the abutment 4 is arranged below the pier 1 and used for bearing the pier 1, and the abutment 4 is connected with the interior of the pier 1 through unbonded prestressed reinforcement 5 with an elastic reset function;
at least one group of grading energy consumption devices 3 which are symmetrically arranged outside two side walls of the bridge pier 1 and are connected with the bridge pier 1 and the bridge abutment 4; the hierarchical energy consumption device 3 comprises a first energy consumption member 301 and a second energy consumption member 302; the first energy consumption piece 301 comprises a first connecting part 3011 extending longitudinally along the pier 1, and one end of the first connecting part 3011 is connected with the pier 1; at least one side of the first connection portion 3011 is provided with a plurality of energy consumption plates 3012 arranged in the longitudinal direction; the second energy dissipation member 302 comprises a second connection portion 3021 extending longitudinally along the pier 1, and the second connection portion 3021 is connected with the abutment 4; the second connecting part 3021 is provided with a plurality of baffles 3022 corresponding to the energy consumption board 3012; the plurality of energy consumption plates 3012 are arranged between the plurality of baffles 3022 in a penetrating manner, and a gap is reserved between the energy consumption plates 3012 and the baffles 3022.
According to the invention, by arranging the replaceable graded energy consumption device 3, when an earthquake occurs, the pier 1 can deflect and bend left and right along the width direction of the bridge, at the moment, the energy consumption plate 3012 collides with the baffle 3022 and generates plastic deformation, and the energy input into the bridge pier column structural system by the earthquake is consumed, so that the bridge pier column structural system is always maintained in an elastic state, and the bridge pier column structural system is effectively protected; the plurality of energy consumption plates 3012 and the plurality of baffles 3022 which are arranged longitudinally realize graded energy consumption, the uppermost energy consumption plate 3012 is subjected to the largest pressure in the deflection and inclination process of the pier 1, and then the plurality of energy consumption plates 3012 gradually and graded consume energy, so that the pressure is effectively shared, the service life of an energy consumption device is prolonged, and the energy consumption capability of a bridge pier column structure system is improved; in addition, the grading energy consumption device is detachably connected with the bridge pier and the bridge abutment, so that the grading energy consumption device can be quickly replaced after being damaged, the repairing time after the earthquake is greatly shortened, and the repairing cost is reduced.
In this embodiment, when the first energy consumption component 301 and the second energy consumption component 302 are installed, the time point when the energy consumption board 3012 enters the plastic energy consumption state is controlled by adjusting the length of the energy consumption board 3012 inserted between the baffles 3022.
In this embodiment, the lengths of the baffles 3022 and the energy consumption plates 3012 are not limited, and the lengths of the energy consumption plates 3012 in the extending direction of the bridge may not be the same, and the lengths of the corresponding baffles may not be the same; the length of the energy consumption plate is related to the energy consumption capacity of the energy consumption plate, and the optimal length of the energy consumption plate is calculated according to the specific condition simulation of the bridge pier column structure system.
In this embodiment, referring to fig. 5, preferably, a plurality of energy consumption plates 3012 are disposed on both sides of the first energy consumption piece 301, and second energy consumption pieces 302 are correspondingly disposed on both sides of the first energy consumption piece 301; the energy consumption capacity of the first energy consumption piece 301 and the energy consumption capacity of the second energy consumption piece 302 are favorably enhanced, the deflection direction of the pier in an earthquake is indefinite, the second energy consumption pieces 302 are arranged on two sides of the first energy consumption piece 301 to deal with the variability of the deflection direction of the pier, the stability of the first energy consumption piece and the stability of the pier are favorably enhanced, and the stress of the first energy consumption piece and the second energy consumption piece is more balanced.
In this embodiment, referring to fig. 3, the energy consumption plates 3012 on two sides of the first energy consumption member 301 are symmetrical to each other, so that the forces applied on two sides of the first energy consumption member 301 are balanced, and the lateral component forces applied on the two symmetrical energy consumption plates 3012 can cancel each other out, thereby reducing the damage to the first energy consumption member 301 and prolonging the service life of the first energy consumption member. Of course, in other embodiments, the energy consumption plate may be disposed on only one side of the first connection portion.
In this embodiment, referring to fig. 5, two sets of graded energy dissipation devices 3 are provided, and the two sets of graded energy dissipation devices 3 are arranged along the extending direction of the bridge, so as to improve the supporting force for the bridge pier 1, and in a strong earthquake, it is beneficial to enhance the strength of the bridge pier column system and enhance the consumption of earthquake energy. Of course, in other embodiments, there is no limitation on the number of graded energy consuming devices, and for example, three sets of graded energy consuming devices may be provided.
In this embodiment, referring to fig. 3, the second connecting portion 3021 includes at least one connecting member 3023 extending in a longitudinal direction of the bridge pier 1, and a plurality of blocking plates 3022 are arranged on the connecting member 3023 in the longitudinal direction; the connecting pieces 3023 are arranged along the periphery of the baffle 3022, so that the reinforcing effect on the baffle 3022 is enhanced, and the baffle 3022 is prevented from being damaged by the second dissipative element 302 due to insufficient support of the connecting portion when the baffle 3022 is pressed by the dissipative sheet 3012, although in other embodiments, the specific structure of the second connecting portion 3021 is not limited to that described above or shown in the drawings, and the specific structure of the second connecting portion 3021 can be designed according to actual requirements.
In this embodiment, referring to fig. 1, 4 and 5, the abutment 4 is composed of an upper steel plate 401 and a lower steel plate 402, and a connecting steel plate 403 disposed therebetween, and the pier 1 is installed on the upper steel plate 401; abutment 4 plays the effect of supporting, partial pressure to 1 post of pier, when preventing that 1 vibrations of pier slope stretch-draw does not have the bonding prestressing steel, does not have the bonding prestressing steel atress too big to produce too big partial pressure at the anchor tip and conquassation the concrete in the abutment 4.
Further, in this embodiment, referring to fig. 1 and 5, a bottom embedded part 7 is embedded in the bottom of the pier 1, the bottom embedded part 7 protrudes toward the abutment 4 to form a first limiting portion 404, the middle portion of the upper steel plate 401 is recessed toward the lower steel plate 402 to form a second limiting portion 405 correspondingly matched with the first limiting portion 404, and the first limiting portion 404 is embedded in the second limiting portion 405 to limit the side movement of the pier 1. During the earthquake, pier 1 produces the micro-swing to there is the tendency of side displacement in pier bottom and abutment 4 production contained angle and pier bottom, and first spacing portion 404 inlays and locates and help restricting the side displacement of pier 1 in the spacing portion 405 of second, provides certain ductility for pier 1, has slowed down the contact destruction of concrete column and abutment 4 at pier lower extreme, has improved the local bearing performance of structure, avoids appearing the serious phenomenon of pier 1 lower extreme damage after shaking.
In this embodiment, referring to fig. 4 and 5, the first connection portion 3011 is connected to the pier 1 through the lug plate 9, bolt holes are reserved on both the upper end of the first connection portion 3011 and the lug plate 9, and the first connection portion 3011 is detachably connected to the lug plate 9 through a bolt; bolt holes are reserved in the bottom of the second connecting portion 3021 and the upper steel plate 401 of the abutment 4, and the second connecting portion 3021 is detachably connected with the abutment 4 through high-strength bolts. When the first energy dissipation part 3011 and the second energy dissipation part 302 need to be replaced and disassembled, the bolts are disassembled, new graded energy dissipation devices 3 are installed again and anchored in the reserved bolt holes through the bolts, the bolts are screwed down, connection of the graded energy dissipation devices with the bridge pier and the bridge abutment can be achieved, replacement time is greatly shortened, and working efficiency is improved.
In this embodiment, when the preferable pier 1 and abutment 4 are poured, the steel bar hole 5 is reserved in the pier 1 and abutment 4, the unbonded prestressed steel bars 55 penetrate through the steel bar hole 5 and penetrate through the pier 1 and abutment 4, and are anchored on the lower steel plate 402 of the abutment 4, since the unbonded prestressed steel bars 5 can realize the self-resetting function under elastic deformation, the unbonded prestressed steel bars 5 can realize effective tensioning and do not bend in an earthquake, and the pier 1 can realize elastic self-resetting by means of the unbonded prestressed steel bars 5.
Example 2
The embodiment provides a construction method of a self-resetting bridge pier column structure system with an external graded energy consumption device, which is used for processing the self-resetting bridge pier column structure system with the external graded energy consumption device in the embodiment 1, and the specific construction steps are as follows:
s1, constructing the pier 1 and the abutment 4 in a cast-in-place or prefabricated mode; during pouring, steel bar holes are reserved in the pier 1 and the abutment 4, and the steel bar holes of the abutment 4 are strictly aligned with the steel bar holes of the pier 1, so that unbonded prestressed steel bars 5 can smoothly pass through the steel bar hole channels 5 of the pier 1 and the steel bar hole channels 5 of the abutment 4, and effective tensioning is realized; meanwhile, embedding an ear plate 9 on the side wall of the pier 1;
s2: the pier 1 and the abutment 4 are installed in a butt joint mode, and meanwhile the first energy dissipation part 301 is connected with the pier 1; the plurality of baffles 3022 of the second energy consumption piece 302 are inserted into the energy consumption board 3012, and the second energy consumption piece 302 is mounted on the abutment 4;
and S3, enabling the unbonded prestressed reinforcement 5 to penetrate through the reserved reinforcement hole channel 5 to connect the pier 1 column and the abutment 4 and be anchored to the abutment 4, and completing construction of the self-resetting bridge pier column structure system.
Specifically, in step S1, when the pier 1 and the abutment 4 are prefabricated or cast-in-place, the column of the pier 1 is provided with corresponding longitudinal bars 8 and stirrups according to stress; pouring the pier embedded part 2 and the pier 1 at the same time, and pouring concrete in the abutment 4.
In step S2, the prefabricated bridge pier 1 and the bridge abutment 4 are connected to each other, and the upper end of the first connection portion 3011 and the bottom of the second connection portion 3021 of the first energy consumption member 301 are connected to the lug plate 9 and the bridge abutment 4 of the side wall of the bridge pier respectively through bolts, so that the bridge pier 1 and the bridge abutment 4 are initially connected and installed.
In step S4, the unbonded prestressed reinforcement 5 of the present invention may be made of high strength steel strand with strength grade of 320 and 1860N/mm2 and diameter of 8.6-15.2 mm; the tensioning method adopts a post-tensioning method, and special grease is coated on the surface of the prestressed reinforcement to prepare the unbonded prestressed steel strand. When the unbonded prestressed steel bars 5 are tensioned from the reserved steel bar pore channels 5, the initial tension of the unbonded prestressed steel bars 5 is ensured to be moderate, the tension of the unbonded prestressed steel bars 5 is not too small, otherwise, the unbonded prestressed steel bars cannot perform the self-resetting function, and the unbonded prestressed steel bars 5 are not too large, so that the elastic performance of the unbonded prestressed steel bars 5 is always kept in the stress process, the initial tension is 30-50% of the ultimate tension, the unbonded prestressed steel bars can have good self-resetting performance, and can be always in the elastic stage without entering the plastic stage, so that the rigidity is prevented from being reduced or residual deformation is prevented.
The construction method of the self-resetting bridge pier column structure system with the external grading energy consumption device, provided by the invention, adopts cast-in-place or prefabricated part assembly, and is clear and simple and convenient to construct; and the graded energy dissipation device is detachably connected with the bridge pier and the bridge abutment, so that the assembly and disassembly are very convenient, the requirements of quick updating and repairing after the earthquake are met, and the durability and the quick repairing performance after the earthquake of the bridge pier column structure system are ensured.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (10)
1. The utility model provides an external hierarchical power consumption device from restoring to throne bridge pier column structure system which characterized in that includes:
the pier is wrapped with pier embedded parts around;
the abutment is arranged below the pier and used for bearing the pier, and the abutment and the interior of the pier are connected through unbonded prestressed steel bars with an elastic reset function;
the at least one group of grading energy consumption devices are symmetrically arranged outside two side walls of the bridge pier and are connected with the bridge pier and the bridge abutment; the grading energy consumption device comprises a first energy consumption piece and a second energy consumption piece;
the first energy dissipation part comprises a first connecting part which extends longitudinally along the bridge pier, and one end of the first main body connecting part is connected with the bridge pier; at least one side of the first connecting part is provided with a plurality of energy consumption plates which are arranged along the longitudinal direction;
the second energy dissipation part comprises a second connecting part which extends longitudinally along the bridge pier, and the second connecting part is connected with the bridge abutment; the second main body part is provided with a plurality of baffle plates corresponding to the energy dissipation plates; the energy dissipation plates penetrate through the baffle plates, and gaps are reserved between the energy dissipation plates and the baffle plates.
2. The self-resetting bridge pier column structure system with the external graded energy consumption devices according to claim 1, wherein a plurality of energy consumption plates are arranged on two sides of the first energy consumption piece, and the second energy consumption pieces are correspondingly arranged on two sides of the first energy consumption piece.
3. The self-resetting bridge pier structure system with external graded energy consumption devices according to claim 2, wherein the energy consumption plates on two sides of the first energy consumption piece are symmetrical to each other.
4. The self-resetting bridge pier column structure system with the external graded energy consumption devices according to claim 1, wherein two sets of graded energy consumption devices are arranged along the extending direction of the bridge.
5. The self-resetting bridge pier structure system with the external graded energy consumption devices 3 as claimed in claim 1, wherein the second connecting part comprises at least one connecting piece extending along the longitudinal direction of the bridge pier, and a plurality of baffles are arranged on the connecting piece along the longitudinal direction; the baffle is provided with a plurality of connecting pieces, and the connecting pieces are arranged along the periphery of the baffle.
6. The self-resetting bridge pier column structure system with the external graded energy consumption devices according to claim 1, wherein the abutment is composed of an upper steel plate, a lower steel plate and a connecting steel plate arranged between the upper steel plate and the lower steel plate, and the bridge pier is installed on the upper steel plate.
7. The self-resetting bridge pier column structure system with the external graded energy consumption devices according to claim 6, wherein a bottom embedded part is embedded in the bottom of the pier, the bottom embedded part protrudes towards the abutment to form a first limiting part, the middle part of the upper steel plate is concave towards the lower steel plate to form a second limiting part correspondingly matched with the first limiting part, and the first limiting part is embedded in the second limiting part to limit the side movement of the pier.
8. The self-resetting bridge pier column structure system with the external graded energy consumption devices according to claim 1, wherein the first connecting portion is connected with the pier through an ear plate, bolt holes are reserved in the upper end of the first connecting portion and the ear plate, and the first connecting portion is detachably connected with the ear plate through bolts; bolt holes are reserved in the bottom of the second connecting portion and the upper steel plate of the bridge abutment, and the second connecting portion is detachably connected with the bridge abutment through high-strength bolts.
9. The self-resetting bridge pier column structure system with the external graded energy consumption devices according to claim 1, wherein a steel bar hole is reserved in the bridge pier and the abutment when the bridge pier and the abutment are prefabricated, and the unbonded prestressed steel bars penetrate through the steel bar hole, penetrate through the bridge pier and the abutment and are anchored on the abutment.
10. A construction method of a self-resetting bridge pier column structure system with an external graded energy consumption device, which is used for processing the self-resetting bridge pier column structure system with the external graded energy consumption device in any one of claims 1 to 9, and is characterized by comprising the following concrete construction steps:
s1, constructing the bridge pier and the bridge abutment in a cast-in-place or prefabricated mode; reserving a steel bar pore passage in the bridge pier and the bridge abutment during pouring, wherein the steel bar pore passage of the bridge abutment is strictly aligned with the steel bar pore passage of the bridge pier; embedding lug plates on the side walls of the piers;
s2: the bridge pier and the bridge abutment are installed in a butt joint mode, and meanwhile the first energy dissipation piece is connected with the bridge pier; the plurality of baffles of the second energy dissipation member are connected with the energy dissipation plate in an inserting mode, and the second energy dissipation member is installed on the bridge abutment;
and S3, penetrating and connecting the unbonded prestressed steel bars with the pier and the abutment through the reserved steel bar hole and anchoring the unbonded prestressed steel bars to the abutment to complete the construction of the self-resetting bridge pier column structure system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323485A (en) * | 2021-05-31 | 2021-08-31 | 重庆大学 | Column base node of bending damper with replaceable after-earthquake |
| CN114412259A (en) * | 2021-10-11 | 2022-04-29 | 北京建筑大学 | Hierarchical energy dissipation is from restoring to throne assembled pier stud |
| CN114922055A (en) * | 2022-05-19 | 2022-08-19 | 浙大城市学院 | Limiting energy dissipation damping device based on mortise and tenon constraint and construction and installation method |
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| CN114412259B (en) * | 2021-10-11 | 2023-06-09 | 北京建筑大学 | Graded energy dissipation self-resetting assembled pier column |
| CN114922055A (en) * | 2022-05-19 | 2022-08-19 | 浙大城市学院 | Limiting energy dissipation damping device based on mortise and tenon constraint and construction and installation method |
| CN114922055B (en) * | 2022-05-19 | 2023-08-22 | 浙大城市学院 | Limiting energy consumption damping device based on mortise and tenon constraint and construction and installation method |
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