CN113944098B - Assembled self-resetting double pier column structure with energy dissipation steel plates - Google Patents
Assembled self-resetting double pier column structure with energy dissipation steel plates Download PDFInfo
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- CN113944098B CN113944098B CN202111183463.2A CN202111183463A CN113944098B CN 113944098 B CN113944098 B CN 113944098B CN 202111183463 A CN202111183463 A CN 202111183463A CN 113944098 B CN113944098 B CN 113944098B
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the technical field of structural engineering, and provides an assembled self-resetting double pier stud structure with an energy dissipation steel plate, which comprises two columns, wherein the two columns are arranged on a base side by side; the energy dissipation steel plates are connected between the upper parts of the two columns along the horizontal direction and are divided into a first energy dissipation steel plate and a second energy dissipation steel plate, the first energy dissipation steel plate and the second energy dissipation steel plate are partially overlapped to form an overlapped part, the overlapped part is provided with a plurality of long slot holes along the horizontal direction, the inside of each long slot hole is provided with a first fastening piece, and the first fastening piece penetrates through the overlapped part through the long slot holes to be fastened and connected; the energy dissipation dampers are symmetrically arranged on two sides of the lower part of each column respectively, are obliquely arranged, and two ends of each energy dissipation damper are hinged with the lower part of each column and the base respectively. According to the invention, the energy dissipation mechanism is formed by the energy dissipation steel plate and the energy dissipation damper, so that the earthquake energy can be greatly consumed, and the damage of the earthquake to the pier column is reduced.
Description
Technical Field
The invention relates to the technical field of structural engineering, in particular to an assembled self-resetting double pier stud structure with an energy dissipation steel plate.
Background
The bridge is an erected structure crossing valleys and poor geology to meet traffic demands, becomes an important node of a infrastructure network, and has the characteristics of guaranteeing continuity and smoothness of the traffic network. The bridge structure is seriously damaged or even collapses and breaks due to the earthquake, the pier column is used as a connecting member of the upper structure and the lower foundation of the bridge, and is a main bearing member of the bridge structure, and the bridge collapses after the pier column is damaged due to the earthquake.
At present, energy-consuming dampers are generally adopted aiming at the earthquake energy dissipation mode, the bridge pier column structures only consume earthquake energy by means of the energy-consuming dampers, the energy-consuming mechanism effect of a single energy-consuming damper is not obvious, and the service life of the pier column is low.
Disclosure of Invention
The invention provides an assembled self-resetting double pier column structure with energy dissipation steel plates, which forms an energy dissipation mechanism together by the energy dissipation steel plates arranged between the upper parts of the double pier columns and the energy dissipation damper arranged at the lower part, so that earthquake energy can be greatly consumed, damage of the earthquake to the pier columns is reduced, and the service life of the pier columns is prolonged.
The invention provides an assembled self-resetting double pier stud structure with an energy dissipation steel plate, which comprises the following components: two columns arranged on the base side by side; the energy dissipation steel plates are connected between the upper parts of the two columns along the horizontal direction and are divided into a first energy dissipation steel plate and a second energy dissipation steel plate, the first energy dissipation steel plate and the second energy dissipation steel plate are partially overlapped to form an overlapped part, the overlapped part is provided with a plurality of long slot holes along the horizontal direction, a first fastener is arranged in each long slot hole, and the first fastener penetrates through the overlapped part through the long slot holes to be fastened and connected; the energy dissipation dampers are symmetrically arranged on two sides of the lower portion of each column respectively, and are obliquely arranged, and two ends of each energy dissipation damper are hinged to the lower portion of each column and the base respectively.
According to the assembled self-resetting double pier stud structure with the energy dissipation steel plates, a first connecting member is embedded in each column body, and two ends of each energy dissipation steel plate are respectively connected with the first connecting member.
According to the assembled self-resetting double pier column structure with the energy dissipation steel plates, the first connecting component comprises a first longitudinal steel section, a second longitudinal steel section and a transverse steel section which are arranged in a Chinese character 'ji', the first longitudinal steel section is spaced from the center of the column body, the second longitudinal steel section is arc-shaped and is arranged against the inner wall of the column body, and the transverse steel section extends to the outside of the column body and is connected with the end part of the energy dissipation steel plates through a second fastener.
According to the assembled self-resetting double pier stud structure with the energy dissipation steel plate, the second connecting component is embedded in the lower portion of the column body, the second connecting component comprises the thin-wall steel plate and the hinged steel block, the thin-wall steel plate is arc-shaped and is arranged against the inner wall of the column body, and the hinged steel block is connected with the thin-wall steel plate and extends to the outer portion of the column body to be hinged with the energy dissipation damper.
According to the assembled self-resetting double pier stud structure with the energy dissipation steel plates, a plurality of energy dissipation steel plates are arranged at intervals along the height direction of the column body.
According to the assembled self-resetting double pier stud structure with the energy dissipation steel plate, the column comprises an upper section column body and a lower section column body which are detachably connected.
According to the assembled self-resetting double pier column structure with the energy dissipation steel plate, the upper section column body is connected with the lower section column body through the third connecting component, the third connecting component comprises a connecting top plate, a connecting bottom plate and a third fastening piece, the connecting top plate is embedded in the bottom of the upper section column body and extends to the outer portion of the upper section column body to form a first outer edge portion, the connecting bottom plate is embedded in the top of the lower section column body and extends to the outer portion of the lower section column body to form a second outer edge portion, and the third fastening piece penetrates through the first outer edge portion and the second outer edge portion to be fastened and connected.
According to the assembled self-resetting double pier stud structure with the energy dissipation steel plate, the invention further comprises a self-resetting mechanism, and the self-resetting mechanism comprises: the non-binding prestressed reinforcement is vertically arranged in the central pore canal of the lower section cylinder, the upper end of the non-binding prestressed reinforcement is connected with the connecting bottom plate through the first anchor, and the lower end of the non-binding prestressed reinforcement is connected to the bottom of the base through the second anchor.
According to the assembled self-resetting double pier stud structure with the energy dissipation steel plate, the spherical part is arranged at the bottom end of the lower section cylinder, the base is provided with the arc groove for accommodating the spherical part, and the friction pad piece is arranged between the arc groove and the spherical part.
According to the assembled self-resetting double pier stud structure with the energy dissipation steel plate, which is provided by the invention, the structure further comprises a bearing platform, and the base is connected to the bearing platform through a fourth connecting component.
According to the assembled self-resetting double pier column structure with the energy dissipation steel plates, provided by the invention, the energy dissipation steel plates arranged between the upper parts of the two columns and the energy dissipation damper arranged at the lower part are used together to absorb transverse disturbance energy of transverse waves to a bridge during an earthquake, so that the earthquake energy can be greatly consumed, and elastic restoring force is provided by unbonded prestressed tendons of the self-resetting mechanism after the earthquake, so that the damage of the earthquake to the pier column is reduced, and the service life of the pier column is prolonged.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall schematic diagram of an assembled self-resetting double pier stud structure with an energy dissipating steel plate provided by the invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
FIG. 3 is a B-B cross-sectional view of FIG. 1;
FIG. 4 is a C-C cross-sectional view of FIG. 1;
FIG. 5 is a D-D sectional view of FIG. 1;
reference numerals:
1. a column; 101. an upper segment column; 102. a lower segment column; 103. a spherical portion; 104. a first accommodation chamber; 2. a base; 201. a second accommodation chamber; 202. a third outer edge portion; 301. a first energy dissipating steel plate; 302. a second energy dissipating steel plate; 303. an overlapping portion; 304. a long slot; 305. a first fastener; 4. an energy-consuming damper; 5. a first connecting member; 501. a first longitudinal steel section; 502. a second longitudinal steel section; 503. a transverse steel section; 504. a first shear bolt; 505. a second fastener; 6. a second connecting member; 601. thin-walled steel sheet; 602. hinging the steel block; 603. a second shear bolt; 7. a third connecting member; 701. connecting a top plate; 702. a connecting bottom plate; 703. a third fastener; 704. a first outer edge portion; 705. a second peripheral portion; 706. a third shear bolt; 8. a self-resetting mechanism; 801. unbonded prestressed tendons; 802. a first anchor; 803. a second anchor; 804. a central aperture; 9. a friction pad; 10. bearing platform; 11. a fourth connecting member; 1101. embedding a steel plate; 1102. a fourth fastener; 1103. and a fourth shear bolt.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
In embodiments of the invention, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
According to an embodiment of the present invention, as shown in fig. 1 and 2, the assembled self-resetting double pier stud structure with energy dissipating steel plate provided by the present invention mainly includes: two columns 1, energy dissipation steel plates and energy dissipation dampers 4. Wherein, two cylinders 1 are set up side by side on base 2. The energy dissipation steel plates are connected between the upper parts of the two columns 1 along the horizontal direction, the energy dissipation steel plates are divided into a first energy dissipation steel plate 301 and a second energy dissipation steel plate 302, the left end of the first energy dissipation steel plate 301 is connected with the outer wall of the upper part of the left column 1, the right end of the second energy dissipation steel plate 302 is connected with the outer wall of the upper part of the right column 1, the right end of the first energy dissipation steel plate 301 is partially overlapped with the left end of the second energy dissipation steel plate 302 to form an overlapped part 303, a plurality of long slot holes 304 are arranged on the overlapped part 303, and the length direction of the long slot holes 304 is arranged along the horizontal direction.
And a first fastener 305 is arranged in the long slot hole 304, and the first fastener 305 penetrates through the overlapping part 303 through the long slot hole 304 to be fastened and connected, so that the connection of the two energy dissipation steel plates is realized. Specifically, the first fastening member 305 is a fastening bolt, and when an earthquake occurs, the first fastening member 305 can slide laterally in the long slot 304, so as to absorb the disturbance energy of the transverse wave to the bridge pier during the earthquake. It is understood that the transverse connection mode of the pier column structure is different from the transverse connection mode of the traditional pier column structure, the two pier columns are connected by adopting the detachable and replaceable energy dissipation steel plates with a certain transverse deflection space, so that the pier column structure has stronger plasticity and is easier to self-reset after earthquake.
The lower part both sides of left side cylinder 1 and the lower part both sides of right side cylinder 1 all set up energy consumption attenuator 4 respectively symmetrically, and the both ends of energy consumption attenuator 4 are articulated with the lower part and the base 2 of cylinder 1 respectively, and energy consumption attenuator 4 slope sets up simultaneously, and energy consumption attenuator 4 and cylinder 1 and base 2 all have the contained angle promptly, constitute triangle-shaped and arrange.
According to the embodiment of the invention, the energy dissipation mechanism is formed by the combined action of the energy dissipation steel plates arranged between the upper parts of the two columns 1 and the energy dissipation damper 4 arranged at the lower part, so that transverse disturbance energy of transverse waves to the bridge pier during an earthquake is absorbed, the earthquake energy can be greatly consumed, the damage of the earthquake to the pier is reduced, and the service life of the pier is prolonged.
It will be appreciated that the specific number of the energy dissipating steel plates of the present invention is not particularly limited, and may be adjusted according to actual conditions, and when a plurality of energy dissipating steel plates are used, they are respectively arranged at intervals in the height direction of the column 1. In this example, the number of the energy dissipating steel plates is three, and accordingly, the number of the first energy dissipating steel plates 301 and the second energy dissipating steel plates 302 is also three, respectively.
According to the embodiment of the invention, the first connecting members 5 are embedded in each column 1, and two ends of the energy dissipation steel plate are respectively connected with the first connecting members 5 in the two columns 1. Specifically, the left end of the first energy dissipating steel plate 301 is connected to the first connecting member 5 in the left side column 1, and the right end of the second energy dissipating steel plate 302 is connected to the first connecting member 5 in the right side column 1.
In one example, as shown in fig. 2, the first connecting member 5 is a chevron-shaped integral member including a first longitudinal steel section 501, a second longitudinal steel section 502, and a transverse steel section 503. The first longitudinal steel section 501 has a certain distance from the center of the column 1, the second longitudinal steel section 502 is arc-shaped and is arranged against the inner wall of the column 1, so as to improve the integrity of the first connecting member 5 and the column 1, and the outer part of the transverse steel section 503 extending to the column 1 is connected with the end part of the energy dissipation steel plate through the second fastener 505. Specifically, the second fastening member 505 is a fastening bolt, and the inner wall of the second longitudinal steel section 502 is pre-buried and connected with a plurality of first shear bolts 504 for enhancing the tightness between the first connecting member 5 and the column 1.
According to the embodiment of the invention, as shown in fig. 1 and 5, a second connecting member 6 is pre-embedded at the lower part of the column 1, the energy consumption damper 4 is connected with the column 1 through the second connecting member 6, specifically, the second connecting member 6 comprises a thin-wall steel plate 601 and a hinged steel block 602, the thin-wall steel plate 601 is arc-shaped and is arranged against the inner wall of the column 1, and a plurality of second shear bolts 603 are arranged on the inner wall of the thin-wall steel plate 601 so as to enhance the tightness between the second connecting member 6 and the column 1; the hinged steel block 602 is connected with the outer wall of the thin-walled steel plate 601, and extends to the outside of the column 1 to be hinged with the upper end of the energy consumption damper 4, and the lower end of the energy consumption damper 4 is hinged with the base 2.
According to an embodiment of the present invention, as shown in fig. 1, 3 and 4, each column 1 comprises an upper segment column 101 and a lower segment column 102, respectively, which are detachably connected. Specifically, the upper segment cylinder 101 is connected to the lower segment cylinder 102 by a third connecting member 7, the third connecting member 7 comprising a connecting top plate 701, a connecting bottom plate 702, and a third fastener 703. Wherein, the connecting top plate 701 is pre-buried in the bottom of the upper segment column 101 and extends to the outside of the upper segment column 101 to construct a first outer edge portion 704, the connecting bottom plate 702 is pre-buried in the top of the lower segment column 102 and extends to the outside of the lower segment column 102 to construct a second outer edge portion 705, and the third fastening member 703 penetrates the first outer edge portion 704 and the second outer edge portion 705 to be fastened and connected, so as to realize the assembly of the upper segment column 101 and the lower segment column 102. In addition, a plurality of third shear bolts 706 are pre-buried and connected to the connection top plate 701 and the connection bottom plate 702, respectively, to enhance the fastening of each with the column 1.
In one example, as shown in fig. 3, the outer diameters of the connection top plate 701 and the connection bottom plate 702 are the same and are all made of steel plates, the third shear bolts 706 are arranged in eight columns distributed radially, two adjacent columns have included angles, the circle is divided into eight equal parts, and the arrangement mode can be understood as regular octagon arrangement and is arranged in three circles; the third fasteners 703 are high strength bolts positioned on the extension of each row of third shear bolts 706 and are arranged in two turns. The present invention can improve the connection stability of the third connection member 7 with the upper segment cylinder 101 and the lower segment cylinder 102 by this arrangement.
According to an embodiment of the present invention, as shown in fig. 4, the present invention further includes a self-resetting mechanism 8, the self-resetting mechanism 8 including: unbonded tendon 801, first anchor 802, and second anchor 803. The unbonded tendon 801 is vertically disposed in a central hole 804 of the lower section column 102, the upper end of the unbonded tendon 801 is connected with the connection base plate 702 through a first anchor 802, and the lower end of the unbonded tendon 801 is connected to the bottom of the base 2 through a second anchor 803. According to the invention, the unbonded prestressed tendons 801 provide an elastic restoring force after an earthquake, so that the damage of the earthquake to the structure is reduced. Compared with the prior art, most of assembly type pier stud structures adopt longer unbonded prestressed tendons and are mostly anchored between the top end of the pier stud and the bottom of a bearing platform, the pier stud can only be replaced integrally after strong vibration, and the unbonded prestressed tendons are loaded and unloaded fussy, so that huge repair cost is caused. According to the invention, the unbonded tendon 801 is connected to the lower section column 102 and is arranged in the central pore canal 804, namely, the unbonded tendon 801 is added to the position where the earthquake action at the lower part of the column is concentrated, so that self-resetting is easier, only part of the column is required to be replaced after earthquake, and meanwhile, the length of the unbonded tendon 801 is shortened, and the unbonded tendon 801 can be quickly replaced. Therefore, the invention saves materials and cost and is convenient to assemble and disassemble through the arrangement.
And, the bottom of the upper segment cylinder 101 is provided with a first accommodation chamber 104 for accommodating the first anchor 802, and the connection top plate 701 is provided with a mounting hole for mounting the first anchor 802, and the bottom of the base 2 is provided with a second accommodation chamber 201 for accommodating the second anchor 803.
According to an embodiment of the present invention, as shown in fig. 4, the bottom end of the lower segment cylinder 102 is provided with a spherical portion 103, the base 2 is provided with an arc groove accommodating the spherical portion 103, and a friction pad 9 is provided between the arc groove and the spherical portion 103. It should be appreciated that when the spherical portion 103 and the arc groove are rotated relatively under the action of an earthquake, and the friction pad 9 is filled between them, so that the constraint between the contact surfaces of the spherical portion 103 and the arc groove can be relaxed, and small slippage and rotation can be generated. The specific type of the friction pad 9 is not particularly limited, and in this example, the friction pad 9 is a rubber pad, and the invention can also achieve the function of assisting in shock absorption and energy dissipation when an earthquake occurs by providing the friction pad 9.
According to an embodiment of the present invention, as shown in fig. 1 and 4, the present invention further includes a platform 10, and the base 2 is connected to the platform 10 through a fourth connection member 11, and the fourth connection member 11 mainly includes a pre-buried steel plate 1101, a fourth fastening member 1102, and a fourth shear bolt 1103. Wherein, the embedded steel plate 1101 is embedded in the top position in the cushion cap 10, and a plurality of fourth fasteners 1102 are connected at the top of the embedded steel plate 1101 and extend to the top of the cushion cap 10 and realize fastening with the third outer edge 202 of the lower part of the base 2 through nuts, and a plurality of fourth shear bolts 1103 are embedded in the bottom of the embedded steel plate 1101 to strengthen the tightness of the embedded steel plate 1101 and the cushion cap 10.
Based on the embodiment, the construction mode of the assembled self-resetting double pier stud structure with the energy dissipation steel plate mainly comprises the following aspects.
(1) The bearing platform 10 adopts a cast-in-situ construction mode, but attention is paid to the fact that the fourth connecting member 11 is pre-buried according to a certain size requirement when the bearing platform is formed in a cast-in-situ mode.
(2) The base 2 is prefabricated in a factory, the base 2 is made of steel ingots, the base 2 is prefabricated into arc grooves according to the design size of the spherical part 103, the arc grooves are in good contact with the spherical part 103 during splicing, the second accommodating cavity 201 which is concave is reserved at the bottom of the base 2 for accommodating the second anchor 803, and corresponding connecting holes are reserved on the third outer edge 202 of the base 2 according to the number and positions of the fourth fasteners 1102 which are stretched out by the bearing platform 10.
(3) The lower segment column 102 is prefabricated in a factory, a central pore canal 804 for installing an unbonded prestress rib 801 is reserved, a connecting bottom plate 702 and a second connecting member 6 are embedded in corresponding positions, and in addition, the bottom of the lower segment column 102 is poured into a spherical part 103 through a hemispherical die according to design dimensions.
(4) The upper segment cylinder 101 is prefabricated in a factory, and the connecting top plate 701 and the connecting bottom plate 702 are kept at corresponding positions during the prefabrication, the first connecting member 5 is embedded, and the first accommodating cavity 104 which is concave is reserved at the bottom of the upper segment cylinder 101 to place the first anchor 802.
Therefore, each pier column structure is divided into four sections and connected in a dry mode through bolts, so that the pier column structure can be prefabricated in advance in a factory, can be assembled and assembled quickly when reaching a construction site, can be replaced in time when a vibration damage component occurs when a large vibration occurs, and can quickly restore the energy dissipation self-resetting function of the structure, and the problems of difficult maintenance and large engineering quantity are solved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a take assembled self-resetting two pier stud structures of energy dissipation steel sheet which characterized in that includes:
the two cylinders are arranged on the base side by side, each cylinder comprises an upper segment cylinder and a lower segment cylinder which are detachably connected, a spherical part is arranged at the bottom end of each lower segment cylinder, and the base is provided with an arc groove for accommodating the spherical part, so that the lower segment cylinders can slide and rotate relative to the base, and stress concentration is reduced;
the friction pad piece is arranged between the arc groove and the spherical part and can assist in damping and energy dissipation;
the energy dissipation steel plates are connected between the upper parts of the two columns along the horizontal direction and are divided into a first energy dissipation steel plate and a second energy dissipation steel plate, the first energy dissipation steel plate and the second energy dissipation steel plate are partially overlapped to form an overlapped part, the overlapped part is provided with a plurality of long slot holes along the horizontal direction, first fasteners are arranged in the long slot holes, the first fasteners penetrate through the overlapped part to be fastened and connected through the long slot holes, and when an earthquake occurs, the first fasteners can slide in the long slot holes along the transverse direction to absorb disturbance energy of transverse waves to bridge pier columns during the earthquake;
the energy consumption dampers are symmetrically arranged on two sides of the lower part of each column respectively, and are obliquely arranged, and two ends of each energy consumption damper are hinged with the lower part of each column and the base respectively;
a third connecting member through which the upper segment cylinder is connected to the lower segment cylinder;
the self-resetting mechanism vertically penetrates through the lower section column body, the upper end of the self-resetting mechanism is connected with the third connecting component, and the lower end of the self-resetting mechanism is connected with the base.
2. The fabricated self-resetting double pier stud structure with the energy dissipation steel plates according to claim 1, wherein a first connecting member is embedded in each column body, and two ends of the energy dissipation steel plates are respectively connected with the first connecting members.
3. The fabricated self-resetting double pier stud structure with the energy dissipating steel plate according to claim 2, wherein the first connecting member comprises a first longitudinal steel section, a second longitudinal steel section and a transverse steel section which are arranged in a zigzag shape, the first longitudinal steel section is spaced from the center of the column body, the second longitudinal steel section is arc-shaped and is arranged against the inner wall of the column body, and the transverse steel section extends to the outside of the column body and is connected with the end part of the energy dissipating steel plate through a second fastener.
4. The assembled self-resetting double pier stud structure with the energy dissipation steel plates according to claim 1, wherein a second connecting member is pre-buried at the lower part of the column body, the second connecting member comprises a thin-wall steel plate and a hinged steel block, the thin-wall steel plate is arc-shaped and is arranged against the inner wall of the column body, and the hinged steel block is connected with the thin-wall steel plate and extends to the outer part of the column body to be hinged with the energy dissipation damper.
5. The fabricated self-resetting double pier stud structure with energy dissipating steel plates according to claim 1, wherein a plurality of the energy dissipating steel plates are provided at intervals along the height direction of the column.
6. The fabricated self-resetting double pier stud structure with an energy dissipating steel plate according to claim 1, wherein the third connecting member comprises a connecting top plate, a connecting bottom plate and a third fastening member, the connecting top plate is pre-buried at the bottom of the upper segment cylinder and extends to the outer portion of the upper segment cylinder to form a first outer edge portion, the connecting bottom plate is pre-buried at the top of the lower segment cylinder and extends to the outer portion of the lower segment cylinder to form a second outer edge portion, and the third fastening member penetrates through the first outer edge portion and the second outer edge portion to be fastened and connected.
7. The fabricated self-healing double pier stud structure with energy dissipating steel plate of claim 6, wherein the self-healing mechanism comprises: the non-binding prestressed reinforcement is vertically arranged in the central pore canal of the lower section cylinder, the upper end of the non-binding prestressed reinforcement is connected with the connecting bottom plate through the first anchor, and the lower end of the non-binding prestressed reinforcement is connected to the bottom of the base through the second anchor.
8. The fabricated self-healing double pier stud structure with energy dissipating steel sheet according to any one of claims 1 to 7, further comprising a cap to which the base is connected by a fourth connection member.
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| CN202111183463.2A CN113944098B (en) | 2021-10-11 | 2021-10-11 | Assembled self-resetting double pier column structure with energy dissipation steel plates |
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| CN202111183463.2A CN113944098B (en) | 2021-10-11 | 2021-10-11 | Assembled self-resetting double pier column structure with energy dissipation steel plates |
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| CN113944098B true CN113944098B (en) | 2023-10-17 |
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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 |
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