CN109371818B - Anti-seismic prefabricated assembled pier and construction method thereof - Google Patents
Anti-seismic prefabricated assembled pier and construction method thereof Download PDFInfo
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- CN109371818B CN109371818B CN201811430245.2A CN201811430245A CN109371818B CN 109371818 B CN109371818 B CN 109371818B CN 201811430245 A CN201811430245 A CN 201811430245A CN 109371818 B CN109371818 B CN 109371818B
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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
Abstract
The invention discloses an anti-seismic prefabricated assembled pier and a construction method thereof, wherein the pier is assembled through an upper pier stud segment, a lower pier stud segment, prestressed tendons and a rubber elastic layer to form a pier body, notches are reserved around the prefabricated pier body, energy-consuming steel plates are anchored in the notches, and the energy-consuming steel plates are ensured not to deflect towards the inner side of the prefabricated pier stud under the action of load; the split bolts are arranged between the oppositely arranged energy-consuming steel plates, so that the energy-consuming steel plates are prevented from being bent towards the outer sides of the pier studs. By arranging the rubber elastic layer, on one hand, the anti-seismic energy-dissipation capacity of the external energy-dissipation steel plate and the built-in rubber elastic layer is fully utilized, and the two are combined to cooperatively ensure the anti-seismic performance; on the other hand, the collision of the upper section and the lower section caused by the earthquake can be avoided, and the concrete is effectively prevented from cracking and crushing. The construction method adopts a technical route of prefabrication in advance and on-site assembly, and can connect the prefabricated energy-consuming steel plate and the upper and lower sections of the pier stud through the anchoring device and the prestressed tendons, so that the assembly is simply and efficiently completed.
Description
Technical Field
The invention belongs to the technical field of road and bridge construction, and particularly relates to an anti-seismic prefabricated assembled pier and a construction method thereof.
Background
The prefabrication and assembly technology has the advantages of high construction efficiency, small influence on environment and traffic, reliable engineering quality, strong self-resetting capability and the like, gradually becomes one of common construction methods in the construction of the upper structure of the bridge since the Shuwa Ziegler Rowa bridge on the French Seine in 1962, and starts some engineering applications in earthquake areas. In 1971, a segmental prefabricated spliced pier was used for the first time in john kennedy dike bridges in texas, usa.
In patent document CN105586828A, an energy dissipation and anti-crushing structure for pier with built-in energy dissipation steel plate and viscoelastic material layer is disclosed, which utilizes built-in energy dissipation steel plate and viscoelastic layer of ultra-high performance concrete UHPC plate to improve energy dissipation capability of pier assembled by segments and prevent concrete crushing of bottom segments. The patent is that the energy-consuming steel plate is clamped between UHPC plates to be fixed, belongs to a built-in energy-consuming steel plate, and the energy-consuming steel plate is directly connected with the upper segment and the embedded steel bar of the bearing platform, and rubber cushion layers are arranged between the bottom segment of the pier and the UHPC plates and the upper segment, so that the structure is relatively complex.
In patent publication No. CN206752295U, an earthquake-proof bridge pier is disclosed, which absorbs part of the energy generated by earthquake through a rubber elastic layer and lead blocks. This patent sets up between upper and lower pier segment and accepts the plate body, and two-layer elastic layer sets up respectively and accepts the plate body and upper and lower pier segment between, and the spherical lug and the plumbous piece that consumes energy of antidetonation post set up pier segment under, through the friction power consumption. The structure form of this patent is also more complicated, and the cost is higher.
In patent publication No. CN107034781A, a reinforced anti-seismic pier column and a construction method thereof are disclosed, which resist the action of earthquake by forming a bi-plastic hinge at the bottom of a reinforced concrete pier column and the upper edge of a reinforced steel plate. According to the steel plate bridge pier, the steel plate is adhered to the bottom of the bridge pier to form the plastic hinge to resist the earthquake effect, the steel plate bridge pier is of a cast-in-place structure, and the construction period is long.
In summary, in the prior art, although both the energy consumption steel plate and the rubber elastic layer can be used for resisting earthquake and energy consumption, the structure is complex, the manufacturing cost is high, and the construction period is long.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides the anti-seismic prefabricated assembled pier which utilizes the external energy consumption steel plate and the rubber elastic layer to jointly consume energy, so that double insurance is added for structural seismic resistance, and the structural form is simple.
The invention also provides a construction method of the pier, which has short construction period and relatively low construction cost.
The technical scheme is as follows: the invention discloses an anti-seismic prefabricated assembled pier which comprises an upper pier stud segment, a lower pier stud segment, a rubber elastic layer, a prestressed tendon, an energy-consuming steel plate, an anchoring device and a split bolt, wherein the rubber elastic layer is arranged between the upper pier stud segment and the lower pier stud segment, and the prestressed tendon penetrates through the rubber elastic layer and is connected with the upper pier stud segment and the lower pier stud segment to form a pier main body; notches are formed in four directions of the outer surface of the pier main body, and the notches are symmetrical in pairs; the energy-consuming steel plates are arranged in the notches in a one-to-one correspondence mode and are anchored on the upper pier column sections and the lower pier column sections through anchoring devices, and the two energy-consuming steel plates in the two notches which are symmetrical to each other are arranged between the two energy-consuming steel plates through penetrating through the pier main body and are connected through split bolts.
Two groups of split bolts for connecting the four energy consumption steel plates are respectively arranged on the upper side and the lower side of the rubber elastic layer. Therefore, the interference caused by the mutual crossing of the split bolts in space can be avoided.
The lower surface of the upper section of the pier stud is provided with an upper groove, the upper groove is arranged on the upper surface of the upper side of the rubber elastic layer, the upper groove is arranged on the upper surface of the lower section of the pier stud, and the lower groove is arranged on the lower surface of the lower section of the pier stud.
The two anchoring devices are respectively arranged at the upper end and the lower end of the energy consumption steel plate, the anchoring device at the upper end is used for anchoring the energy consumption steel plate to the upper section of the pier stud, and the anchoring device at the lower end is used for anchoring the energy consumption steel plate to the lower section of the pier stud.
The anchoring device comprises an anchoring steel base plate, an anchoring bolt and an anchoring steel bar; one side of the anchoring steel base plate is provided with a clamping groove, the other side of the anchoring steel base plate is connected with the anchoring steel bar, and the end part of the energy-consuming steel plate is arranged in the clamping groove and fixed through an anchoring bolt; and the upper end and the lower end of the notch are provided with anchoring holes, and the anchoring reinforcing steel bars are fixed in the anchoring holes.
The technical scheme adopted by the construction method of the pier comprises the following steps:
(1) placing the prefabricated lower section of the pier stud on a bearing platform, and adhering a rubber elastic layer to the top surface of the lower section of the pier stud;
(2) welding an anchoring steel bar on the anchoring steel backing plate, injecting a bonding agent into anchoring holes of the notches of the lower section and the upper section of the pier stud, and then inserting the anchoring steel bar into the anchoring holes for fixing;
(3) mounting the lower end of the energy-consuming steel plate into a clamping groove of an anchoring steel base plate of the pier column lower section, and fixing the energy-consuming steel plate through an anchoring bolt;
(4) hoisting the prefabricated upper pier stud segment, installing the upper end of the energy-consuming steel plate into a clamping groove of an anchoring steel base plate of the upper pier stud segment, and fixing the energy-consuming steel plate through an anchoring bolt;
(5) installing split bolts and temporarily fixing the energy consumption steel plates;
(6) inserting the prestressed tendons into assembly ducts reserved for the upper section of the pier stud, the rubber elastic layer and the lower section of the pier stud, and tensioning; and the energy-consuming steel plate is completely fixed by screwing the split bolt.
Has the advantages that: according to the earthquake-resistant prefabricated assembled pier, the notches are reserved around the prefabricated pier body, and the energy-consuming steel plates are anchored in the notches, so that the energy-consuming steel plates cannot deflect towards the inner side of the prefabricated pier column under the action of load; the split bolts are arranged between the oppositely arranged energy-consuming steel plates, so that the energy-consuming steel plates are prevented from being bent like the outer sides of the pier studs. The rubber elastic layer is arranged between the upper section of the pier stud and the lower section of the pier stud, so that on one hand, the anti-seismic energy dissipation capacity of the external energy dissipation steel plate and the built-in rubber elastic layer is fully utilized, and the combination of the external energy dissipation steel plate and the built-in rubber elastic layer cooperatively ensures the anti-seismic performance; on the other hand, the collision of the upper section and the lower section caused by the earthquake can be avoided, and the concrete is effectively prevented from cracking and crushing. The construction method adopts a technical route of prefabrication in advance and on-site assembly, and can connect the prefabricated energy-consuming steel plate and the upper and lower sections of the pier stud through the anchoring device and the prestressed tendons, so that the assembly is simply and efficiently completed.
Drawings
Fig. 1 is a schematic structural disassembly diagram of an earthquake-resistant prefabricated assembled pier according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an earthquake-resistant prefabricated assembled pier in the embodiment of the invention;
FIG. 3 is a schematic structural disassembly view of the earthquake-resistant prefabricated assembled pier of FIG. 1 without energy-consuming steel plates, anchoring devices and split bolts;
fig. 4 is a schematic structural view of the anti-seismic prefabricated assembled pier of fig. 1 with the upper section of the pier stud and the lower section of the pier stud removed;
fig. 5 is a schematic structural view of an energy-consuming steel plate, an anchoring device and a split bolt of the seismic precast assembled pier of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, the embodiment discloses an earthquake-resistant prefabricated assembled pier, which comprises an upper pier stud segment 1, a lower pier stud segment 2, a rubber elastic layer 3, a prestressed tendon 4, an energy-consuming steel plate 9, an anchoring device and a split bolt 8.
The rubber elastic layer 3 is arranged between the upper pier column section 1 and the lower pier column section 2. And assembly pore channels 13 are reserved at corresponding positions of the upper pier column section 1, the lower pier column section 2 and the rubber elastic layer 3. The prestressed tendons 4 penetrate through the rubber elastic layer 3 from the assembling hole 13 and are connected with the pier stud upper section 1 and the pier stud lower section 2, so that a pier main body is formed.
The pier main body can be in a rectangular parallelepiped shape, a cylindrical shape, an elliptic cylinder shape and the like. Taking a cuboid pier main body as an example, notches 11 are formed in the front, rear, left and right directions of the outer surface of the cuboid pier main body, and the notches 11 are symmetrical in pairs. In this embodiment, the energy consumption steel plate 9 and the notch 11 are both rectangular, and the energy consumption steel plate 9 is slightly smaller than the notch 11. The energy-consuming steel plates 9 are arranged in the notches 11 in a one-to-one correspondence mode, anchoring device anchors are arranged at the upper end and the lower end of each energy-consuming steel plate, the anchoring devices at the upper ends are used for anchoring the energy-consuming steel plates 9 to the upper pier stud sections 1, and the anchoring devices at the lower ends are used for anchoring the energy-consuming steel plates 9 to the lower pier stud sections 2. Thereby avoiding the deflection of the energy consumption steel plate 9 towards the inner side of the pier body under the action of load.
Specifically, the anchoring device comprises an anchoring steel bar 5, an anchoring steel base plate 6 and an anchoring bolt 7, wherein the anchoring steel bar 5 is welded on one side of the anchoring steel base plate 6, and a clamping groove is formed in the other side of the anchoring steel base plate 6. The end part of the energy dissipation steel plate 9 is arranged in the clamping groove and fixed through the anchor bolt 7. At the upper and lower both ends of notch, the upper surface that is located pier stud upper segment 1 of also being the notch and the lower surface that is located pier stud lower segment 2 all are provided with anchor hole 10, and anchor reinforcing bar 5 is fixed in anchor hole 10.
The lower surface of the pier column upper section 1 is provided with an upper groove 14, the upper surface of the pier column lower section 2 is provided with a lower groove 12, and the two groups of split bolts 8 penetrate through the pier main body from the upper groove 14 and the lower groove 12 respectively. Two ends of the split bolt 8 are respectively connected with two energy consumption steel plates 9 which are positioned in two notches 11 which are symmetrical to each other. The arrangement enables the energy consumption steel plates 9 not to deflect like the outer side of a pier main body, and two groups of counter-pulling bolts 8 for connecting the four energy consumption steel plates 9 are respectively positioned on the upper side and the lower side of the rubber elastic layer 3, so that the two groups of counter-pulling bolts 8 are prevented from being intersected in space to form interference.
The embodiment also discloses a construction method of the anti-seismic prefabricated assembled pier, which is characterized by comprising the following steps:
(1) transporting each part of the prefabricated pier to a construction site, arranging the pier stud lower section 1 on a bearing platform, and adhering the rubber elastic layer 3 on the top surface of the pier stud lower section 2;
(2) welding the anchoring steel bars 5 on the anchoring steel backing plate 6, injecting a binder into the anchoring holes 10 of the notches 11 of the pier column lower section 2 and the pier column upper section 3, wherein the binder can be epoxy vertical, and then inserting the anchoring steel bars 5 into the anchoring holes 10 for fixing;
(3) the lower end of the energy consumption steel plate 9 is installed into a clamping groove of the anchoring steel base plate 6 of the pier lower section 2, the energy consumption steel plate 9 can be smoothly embedded into the clamping groove due to the fact that the width of the clamping groove is slightly larger than the thickness of the energy consumption steel plate 9, and then the energy consumption steel plate 9 and the anchoring steel base plate 6 are combined and fixed through the anchoring bolt 7;
(4) hoisting the prefabricated upper pier stud segment 1, installing the upper end of the energy-consuming steel plate 9 into a clamping groove of an anchoring steel base plate 6 of the upper pier stud segment 1, and combining and fixing the energy-consuming steel plate through an anchoring bolt 7;
(5) installing split bolts 8 and temporarily fixing the energy consumption steel plates 9;
(6) inserting the prestressed tendons 4 into the assembly hole channels 13 reserved in the upper pier stud segment 1, the rubber elastic layer 3 and the lower pier stud segment, and tensioning; and finally, screwing the split bolt 8 to completely fix the energy consumption steel plate 9.
Claims (5)
1. The anti-seismic prefabricated assembled pier is characterized by comprising an upper pier column section (1), a lower pier column section (2), a rubber elastic layer (3), a prestressed tendon (4), an energy-consuming steel plate (9), an anchoring device and a split bolt (8), wherein the rubber elastic layer (3) is arranged between the upper pier column section (1) and the lower pier column section (2), and the prestressed tendon (4) penetrates through the rubber elastic layer (3) and is connected with the upper pier column section (1) and the lower pier column section (2) to form a pier main body; notches (11) are formed in four directions of the outer surface of the pier main body, and the notches (11) are symmetrical in pairs; the energy-consuming steel plates (9) are arranged in the notches (11) in a one-to-one correspondence mode and are anchored to the pier stud upper section (1) and the pier stud lower section (2) through anchoring devices, and the two energy-consuming steel plates (9) respectively arranged in the two notches (11) which are symmetrical to each other are connected through the split bolts (8) penetrating through the pier main body; two groups of split bolts (8) for connecting the four energy consumption steel plates (9) are respectively arranged on the upper side and the lower side of the rubber elastic layer (3); the cross section of the pier main body is divided into four diagonal regions by two groups of split bolts (8) with the extending directions staggered with each other, and the four prestressed tendons (4) are arranged in the four diagonal regions respectively.
2. An earthquake-resistant prefabricated assembly pier according to claim 1, wherein the lower surface of the pier stud upper section (1) is provided with an upper groove (14), a counter bolt (8) provided on the upper side of the rubber elastic layer (3) penetrates through the upper groove (14), the upper surface of the pier stud lower section (2) is provided with a lower groove (12), and the counter bolt (8) provided on the lower side of the rubber elastic layer (3) penetrates through the lower groove (12).
3. An earthquake-resistant prefabricated spliced pier according to claim 1, wherein the anchoring devices are arranged at the upper and lower ends of the energy-dissipating steel plate (9), the anchoring device at the upper end is used for anchoring the energy-dissipating steel plate (9) to the upper pier stud segment (1), and the anchoring device at the lower end is used for anchoring the energy-dissipating steel plate (9) to the lower pier stud segment (2).
4. An earthquake-resistant prefabricated spliced pier according to claim 3, wherein the anchoring device comprises an anchoring steel base plate (6), an anchoring bolt (7) and an anchoring steel bar (5); one side of the anchoring steel base plate (6) is provided with a clamping groove, the other side of the anchoring steel base plate is connected with the anchoring steel bar (5), and the end part of the energy-consuming steel plate (9) is arranged in the clamping groove and fixed through an anchoring bolt (7); and the upper end and the lower end of the notch are both provided with anchoring holes (10), and the anchoring steel bars (5) are fixed in the anchoring holes (10).
5. A construction method of an earthquake-resistant prefabricated spliced pier according to any one of claims 1 to 4, characterized by comprising the following steps:
(1) placing the prefabricated lower section of the pier stud on a bearing platform, and adhering a rubber elastic layer to the top surface of the lower section of the pier stud;
(2) welding an anchoring steel bar on the anchoring steel backing plate, injecting a bonding agent into anchoring holes of the notches of the lower section and the upper section of the pier stud, and then inserting the anchoring steel bar into the anchoring holes for fixing;
(3) mounting the lower end of the energy-consuming steel plate into a clamping groove of an anchoring steel base plate of the pier column lower section, and fixing the energy-consuming steel plate through an anchoring bolt;
(4) hoisting the prefabricated upper pier stud segment, installing the upper end of the energy-consuming steel plate into a clamping groove of an anchoring steel base plate of the upper pier stud segment, and fixing the energy-consuming steel plate through an anchoring bolt;
(5) installing split bolts and temporarily fixing the energy consumption steel plates;
(6) inserting the prestressed tendons into assembly ducts reserved for the upper section of the pier stud, the rubber elastic layer and the lower section of the pier stud, and tensioning; and the energy-consuming steel plate is completely fixed by screwing the split bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811430245.2A CN109371818B (en) | 2018-11-27 | 2018-11-27 | Anti-seismic prefabricated assembled pier and construction method thereof |
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| CN201811430245.2A CN109371818B (en) | 2018-11-27 | 2018-11-27 | Anti-seismic prefabricated assembled pier and construction method thereof |
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| CN109371818A CN109371818A (en) | 2019-02-22 |
| CN109371818B true CN109371818B (en) | 2021-08-10 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111560832A (en) * | 2020-05-18 | 2020-08-21 | 河南建筑职业技术学院 | Steel frame bridge structure of concatenation fast |
| CN112431355B (en) * | 2020-11-23 | 2022-04-12 | 上海绿地建设(集团)有限公司 | Concrete column capable of preventing displacement and shearing |
| CN114263098A (en) * | 2022-01-17 | 2022-04-01 | 郑州大学 | Mortise and tenon type self-resetting pier with half-moon-shaped energy dissipater |
| CN114263093A (en) * | 2022-01-22 | 2022-04-01 | 郑州大学 | Fully-prefabricated assembled bridge and construction method |
| CN114232467A (en) * | 2022-02-07 | 2022-03-25 | 郑州大学 | Prefabricated assembly pier with multi-plastic section energy dissipation capacity |
| CN114622481B (en) * | 2022-03-31 | 2023-05-05 | 中冶集团武汉勘察研究院有限公司 | Double-column type self-resetting pier structure with buckling restrained brace and construction method thereof |
| 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 |
| CN115387484B (en) * | 2022-08-12 | 2024-01-30 | 河北工业大学 | Assembled energy consumption modularized heat insulation board structure and construction method |
| CN115198904B (en) * | 2022-08-19 | 2024-04-05 | 河北工业大学 | Assembled insulation board structure and construction method |
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| JP5597317B1 (en) * | 2014-04-16 | 2014-10-01 | 株式会社ハナミズキ・ブリッジ・プランニング | Seismic reinforcement structure for bridge piers |
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| CN206110352U (en) * | 2016-08-19 | 2017-04-19 | 西安建筑科技大学 | Can repair, formula that restores to throne certainly rectangular concrete -filled steel tube frame column base node |
| CN206956535U (en) * | 2017-05-18 | 2018-02-02 | 广州大学 | One kind enhancing antidetonation pier stud |
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| CN105586828A (en) * | 2016-02-26 | 2016-05-18 | 东南大学 | Pier energy-dissipating and crushing-preventing structure internally provided with energy dissipating steel plates and viscous-elastic material layers |
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