CN111705628A - Combined supporting structure for transverse earthquake resistance of three-span bridge - Google Patents
Combined supporting structure for transverse earthquake resistance of three-span bridge Download PDFInfo
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- CN111705628A CN111705628A CN202010566511.5A CN202010566511A CN111705628A CN 111705628 A CN111705628 A CN 111705628A CN 202010566511 A CN202010566511 A CN 202010566511A CN 111705628 A CN111705628 A CN 111705628A
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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
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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
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Environmental & Geological Engineering (AREA)
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- Bridges Or Land Bridges (AREA)
Abstract
The invention particularly relates to a combined supporting structure for transverse earthquake resistance of a three-span bridge, which solves the problem of poor transverse earthquake resistance of the conventional bridge supporting structure. A combined supporting structure for the transverse earthquake resistance of a three-span bridge is characterized in that two limiting baffle tables are integrally arranged at the edge part of the upper surface of a bent cap; a bearing table is horizontally arranged between the two limiting blocking tables; the bent cap is provided with a plurality of sliding chutes; the lower surface of the bearing table is provided with a plurality of sliding seats; a plurality of hydraulic dampers are connected between the bearing platform and the two limit baffle platforms; a plurality of limiting columns are connected between the two connecting lugs, the pier caps are sleeved on the limiting columns in a sliding mode, two upper connecting frames are fixedly connected to the two connecting lugs, and two shock absorbers are horizontally connected to the bottoms of the two upper connecting frames respectively. According to the invention, through the multiple transverse damping support system, the transverse damping effect of the bridge is effectively improved, and the transverse buffering protection effect on structures such as a bridge body and a bridge pier is improved.
Description
Technical Field
The invention relates to a supporting structure for bridge engineering, in particular to a combined supporting structure for transverse earthquake resistance of a three-span bridge.
Background
The bridge is a building which spans mountain stream, rivers, lakes and seas, unfavorable geology or meets other traffic needs to be erected so as to enable the bridge to pass more conveniently; the seismic performance of bridges needs to be considered in bridge construction, and particularly bridges built in earthquake regions need to be considered.
However, practice shows that the longitudinal anti-seismic performance is considered in bridge construction, the structure for dealing with the transverse vibration of the bridge in the existing bridge supporting structure is relatively simple, so that the transverse anti-seismic effect is poor, and when the transverse vibration occurs, the bridge body and the bridge supporting structure are easily damaged, and the normal use of the bridge is influenced.
Disclosure of Invention
The invention provides a combined supporting structure for transverse earthquake resistance of a three-span bridge, aiming at solving the problem of poor transverse earthquake resistance of the existing bridge supporting structure.
The invention is realized by adopting the following technical scheme:
a combined supporting structure for transverse earthquake resistance of a three-span bridge comprises a bridge pier, a cover beam and a pier cap arranged between the bridge pier and the cover beam; the bridge pier comprises a foundation and two bridge pier columns which are vertically arranged on the foundation and distributed left and right, and the top end parts of the two bridge pier columns are fixed into a whole; two limiting blocking platforms which are longitudinally arranged and are distributed in parallel left and right are integrally arranged at the edge part of the upper surface of the bent cap; a bearing table is horizontally arranged between the two limiting blocking tables; a first supporting mechanism is arranged between the cover beam and the bearing platform; a second supporting mechanism is arranged between the bent cap and the pier cap;
the first supporting mechanism comprises a plurality of sliding chutes which are arranged on the upper surface of the bent cap and are distributed in parallel front and back; the lower surface of the bearing table is provided with a plurality of sliding seats which are in one-to-one corresponding sliding contact with the sliding grooves; a plurality of hydraulic dampers which are arranged in the left and right direction and are distributed in parallel front and back are connected between the bearing table and the two limiting baffle tables; a buffer spring is sleeved outside the side wall of each hydraulic damper;
the second supporting mechanism comprises two connecting lugs which are integrally arranged on the edge of the lower surface of the bent cap along the vertical direction and are arranged in the same direction with the limiting stop table, a plurality of limiting columns which are distributed in parallel front and back are horizontally connected between the two connecting lugs, and the upper part of the pier cap is sleeved on each limiting column in a sliding manner; the lateral surface bilateral symmetry ground fixedly connected with of two engaging lugs goes up the link, and the lower part of link all downwardly extending on two, and bottom between them respectively horizontally connect with two bumper shock absorbers, and two bumper shock absorbers are connected in the side of pier respectively through two lower link bilateral symmetry ground.
When the bridge transversely vibrates, the bearing platform transversely moves to transmit transverse acting force to the plurality of hydraulic dampers positioned on the two sides of the bearing platform, transverse buffering and shock absorption are realized under the combined action of the hydraulic dampers, and the sliding groove and the sliding seat limit the displacement of the bearing platform to form a first shock absorption supporting system; when the bent cap transversely moves, the bent cap and the pier cap relatively slide under the action of the limiting column, transverse acting force is transmitted to the two shock absorbers, transverse buffering shock absorption is realized under the combined action of the two shock absorbers, and the two connecting lugs limit the displacement of the bent cap to form a second shock absorption supporting system; in the process, the bent cap serves as an intermediate for transverse buffering of the bridge body and the bridge pier, so that the protection effect on the bridge body and the bridge pier can be improved; the problem that the existing bridge supporting structure is poor in transverse anti-seismic performance is solved.
A combined supporting structure for transverse earthquake resistance of a three-span bridge also comprises a third supporting mechanism arranged at the lower part of a pier; the third supporting mechanism comprises an anti-collision sleeve which is movably sleeved outside the two pier stand columns and is horizontally placed, the bottom of the anti-collision sleeve is vertically and fixedly connected with an anti-collision supporting pile which is positioned between the two pier stand columns, installation gaps are reserved between the anti-collision supporting pile and the two pier stand columns, the lower part of the anti-collision supporting pile penetrates through the foundation, and the bottom of the anti-collision supporting pile is fixed inside the foundation; the lower surface of the anti-collision sleeve is bilaterally symmetrically provided with two rectangular grooves positioned on the outer sides of the two pier stand columns, and the two rectangular grooves are respectively communicated with the left side wall and the right side wall of the anti-collision sleeve; two horizontally placed anti-collision frames are respectively embedded in the two rectangular grooves, and the two anti-collision frames are respectively connected to the side walls of the two rectangular grooves, which are adjacent to the anti-collision supporting piles, through two rubber cushion pads; all be connected with two spring damper between every anticollision frame and the anticollision stake of supporting, the bottom of locating the anticollision cover is all worn in the activity of each spring damper.
When pier lateral shifting, drive anticollision cover lateral shifting, transmit each spring buffer with lateral force through anticollision frame, rubber buffer, each spring buffer combined action realizes the lateral buffering shock attenuation to transmit remaining lateral force for the anticollision and support the stake, because the anticollision supports stake and pier contactless, can not lead to the fact the influence to the pier, and then show the anticollision protection effect that has strengthened third supporting mechanism.
The sliding groove is a rectangular sliding groove, the sliding seat comprises an adjusting sliding block which is integrally arranged in the middle of the lower surface of the bearing table and is of a rectangular structure, the left end face and the right end face of the adjusting sliding block are respectively screwed with a supporting stud, the outer end parts of the two supporting studs are respectively provided with a limiting sliding block which is of a rectangular structure and is in threaded connection with the limiting sliding block, and a locking nut which is tightly attached to the adjusting sliding block is sleeved outside the side wall of each of the.
This structural design can adjust the interval of adjusting block and two spacing slider through the support double-screw bolt, realizes the purpose of adjustment slide length from this to can restrict the displacement volume of the horizontal shock attenuation buffering of plummer through slide and spout, improve the stability of being connected between bridge body, plummer and the bent cap.
A plurality of connecting seats are arranged on the inner side surfaces of the two limiting blocking platforms in a pre-embedded mode, and each hydraulic damper is connected to each connecting seat in a one-to-one correspondence mode.
The upper connecting frame and the connecting lugs, and the lower connecting frame and the bridge piers are fixedly connected through a plurality of bolts.
Each sliding groove is distributed at equal intervals; all the hydraulic dampers connected to the same limiting blocking platform are distributed at equal intervals.
The anti-collision bridge has the advantages of reasonable and reliable structural design, firm structure, stable connection and good anti-collision protection effect, effectively improves the transverse damping effect of the bridge and the transverse buffering protection effect on structures such as a bridge body, a bridge pier and the like through the multiple transverse damping support systems, and has the advantages of good anti-collision protection effect.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an exploded view of the structure of a coping and pier in the present invention;
FIG. 3 is an exploded view of the structure of the cover beam and the carrier platform of the present invention;
FIG. 4 is a bottom view of a third support mechanism of the present invention;
fig. 5 is a schematic structural view of the slider in the present invention.
In the figure, 1-capping beam, 2-coping, 3-foundation, 4-pier upright post, 5-limit block, 6-bearing platform, 701-sliding chute, 702-sliding seat, 702 a-adjusting sliding block, 702 b-supporting stud, 702 c-limit sliding block, 702 d-locking nut, 703-hydraulic damper, 704-buffer spring, 705-connecting seat, 801-connecting lug, 802-limit post, 803-upper connecting frame, 804-shock absorber, 805-lower connecting frame, 901-anti-collision sleeve, 902-support pile, 903-rectangular groove, 904-rubber buffer pad, 905-anti-collision frame and 906-spring buffer.
Detailed Description
A combined supporting structure for transverse earthquake resistance of a three-span bridge comprises a bridge pier, a cover beam 1 and a pier cap 2 arranged between the bridge pier and the cover beam; the bridge pier comprises a foundation 3 and two bridge pier columns 4 which are vertically arranged on the foundation 3 and distributed left and right, and the top end parts of the two bridge pier columns 4 are fixed into a whole; the edge part of the upper surface of the bent cap 1 is integrally provided with two limiting blocking platforms 5 which are longitudinally arranged and are distributed in parallel left and right; a bearing platform 6 is horizontally arranged between the two limiting baffle platforms 5; a first supporting mechanism is arranged between the cover beam 1 and the bearing platform 6; a second supporting mechanism is arranged between the bent cap 1 and the pier cap 2;
the first supporting mechanism comprises a plurality of sliding chutes 701 which are arranged on the upper surface of the bent cap 1 and are distributed in parallel front and back; the lower surface of the bearing table 6 is provided with a plurality of sliding seats 702 which are in one-to-one corresponding sliding contact with the sliding grooves 701; a plurality of hydraulic dampers 703 which are arranged in the left-right direction and are distributed in parallel front and back are connected between the bearing table 6 and the two limiting baffle tables 5; a buffer spring 704 is sleeved outside the side wall of each hydraulic damper 703;
the second supporting mechanism comprises two connecting lugs 801 which are integrally arranged on the edge of the lower surface of the bent cap 1 along the vertical direction and are placed in the same direction with the limiting blocking platform 5, a plurality of limiting columns 802 which are distributed in parallel front and back are horizontally connected between the two connecting lugs 801, and the upper part of the pier cap 2 is sleeved on each limiting column 802 in a sliding mode; two upper connecting frames 803 are fixedly connected to the outer side surfaces of the two connecting lugs 801 in a bilateral symmetry manner, the lower portions of the two upper connecting frames 803 extend downwards, the bottoms of the two upper connecting frames 803 are respectively and horizontally connected with two shock absorbers 804, and the two shock absorbers 804 are respectively and bilaterally symmetrically connected to the side surfaces of the pier through two lower connecting frames 805.
A combined supporting structure for transverse earthquake resistance of a three-span bridge also comprises a third supporting mechanism arranged at the lower part of a pier; the third supporting mechanism comprises an anti-collision sleeve 901 which is movably sleeved outside the two pier columns 4 and is horizontally placed, the bottom of the anti-collision sleeve 901 is vertically and fixedly connected with an anti-collision supporting pile 902 positioned between the two pier columns 4, installation gaps are reserved between the anti-collision supporting pile 902 and the two pier columns 4, the lower part of the anti-collision supporting pile 902 penetrates through the foundation 3, and the bottom of the anti-collision supporting pile 902 is fixed inside the foundation; the lower surface of the anti-collision sleeve 901 is bilaterally symmetrically provided with two rectangular grooves 903 positioned on the outer sides of the two pier columns 4, and the two rectangular grooves 903 are respectively communicated with the left side wall and the right side wall of the anti-collision sleeve 901; two horizontally placed anti-collision frames 905 are respectively embedded in the two rectangular grooves 903, and the two anti-collision frames 905 are respectively connected to the side walls, adjacent to the anti-collision supporting piles 902, of the two rectangular grooves 903 through two rubber cushions 904; two spring buffers 906 are connected between each anti-collision frame 905 and the anti-collision support pile 902, and the spring buffers 906 penetrate through the bottom of the anti-collision sleeve 901 in a moving mode.
The sliding groove 701 is a rectangular sliding groove, the sliding base 702 comprises an adjusting sliding block 702a which is integrally arranged in the middle of the lower surface of the bearing table 6 and has a rectangular structure, the left end face and the right end face of the adjusting sliding block 702a are respectively screwed with a supporting stud 702b, the outer end parts of the two supporting studs 702b are respectively provided with a limiting sliding block 702c which is in a rectangular structure and is in threaded connection with the two supporting studs, and the outer side walls of the two supporting studs are respectively sleeved with a locking nut 702d tightly attached to the adjusting sliding block 702 a.
The inner side surfaces of the two limit baffle platforms 5 are provided with a plurality of connecting seats 705 through embedding, and the hydraulic dampers 703 are connected to the connecting seats 705 in a one-to-one correspondence manner.
The upper connecting frame 803 and the connecting lug 801, and the lower connecting frame 805 and the pier are fixedly connected through a plurality of bolts.
The sliding grooves 701 are distributed at equal intervals; all the hydraulic dampers connected to the same limiting baffle table 5 are distributed at equal intervals.
In a specific implementation, the spring damper 906 is a KCG35-40 nitrogen spring damper manufactured by Kai Emblica corporation of Japan.
Claims (6)
1. A combined supporting structure for transverse earthquake resistance of a three-span bridge comprises a pier, a cover beam (1) and a pier cap (2) arranged between the pier and the cover beam; the method is characterized in that: the bridge pier comprises a foundation (3) and two bridge pier columns (4) which are vertically arranged on the foundation (3) and distributed left and right, and the top ends of the two bridge pier columns (4) are fixed into a whole; the edge part of the upper surface of the bent cap (1) is integrally provided with two limiting baffle tables (5) which are longitudinally arranged and distributed in parallel left and right; a bearing platform (6) is horizontally arranged between the two limit baffle platforms (5); a first supporting mechanism is arranged between the cover beam (1) and the bearing platform (6); a second supporting mechanism is arranged between the bent cap (1) and the pier cap (2);
the first supporting mechanism comprises a plurality of sliding chutes (701) which are arranged on the upper surface of the bent cap (1) and are distributed in parallel front and back; the lower surface of the bearing table (6) is provided with a plurality of sliding seats (702) which are in one-to-one corresponding sliding contact with the sliding grooves (701); a plurality of hydraulic dampers (703) which are arranged in the left-right direction and are distributed in parallel front and back are connected between the bearing table (6) and the two limiting baffle tables (5); a buffer spring (704) is sleeved outside the side wall of each hydraulic damper (703);
the second supporting mechanism comprises two connecting lugs (801) which are integrally arranged on the edge of the lower surface of the bent cap (1) along the vertical direction and are placed in the same direction as the limiting blocking platform (5), a plurality of limiting columns (802) which are distributed in parallel front and back are horizontally connected between the two connecting lugs (801), and the upper parts of the pier caps (2) are slidably sleeved on the limiting columns (802); two upper connecting frames (803) are fixedly connected to the outer side surfaces of the two connecting lugs (801) in a bilateral symmetry mode, the lower portions of the two upper connecting frames (803) extend downwards, the bottoms of the two upper connecting frames and the bottoms of the two upper connecting frames are respectively and horizontally connected with two shock absorbers (804), and the two shock absorbers (804) are respectively connected to the side surfaces of the bridge pier in a bilateral symmetry mode through two lower connecting frames (805).
2. A combined supporting structure for the lateral earthquake resistance of a three-span bridge according to claim 1, wherein: the third support mechanism is arranged at the lower part of the pier; the third supporting mechanism comprises an anti-collision sleeve (901) which is movably sleeved on the outer sides of the two pier columns (4) and is horizontally placed, the bottom of the anti-collision sleeve (901) is vertically and fixedly connected with an anti-collision supporting pile (902) which is positioned between the two pier columns (4), installation gaps are reserved between the anti-collision supporting pile (902) and the two pier columns (4), the lower part of the anti-collision supporting pile (902) penetrates through the foundation (3), and the bottom of the anti-collision supporting pile is fixed in the foundation; the lower surface of the anti-collision sleeve (901) is provided with two rectangular grooves (903) which are positioned on the outer sides of two pier columns (4) in a bilateral symmetry manner, and the two rectangular grooves (903) are respectively communicated with the left side wall and the right side wall of the anti-collision sleeve (901); two horizontally placed anti-collision frames (905) are respectively embedded in the two rectangular grooves (903), and the two anti-collision frames (905) are respectively connected to the side walls, adjacent to the anti-collision support piles (902), of the two rectangular grooves (903) through two rubber cushion pads (904); two spring buffers (906) are connected between each anti-collision frame (905) and the anti-collision support pile (902), and the spring buffers (906) are movably arranged at the bottom of the anti-collision sleeve (901).
3. A combined supporting structure for the lateral earthquake resistance of a three-span bridge according to claim 1, wherein: the sliding groove (701) is a rectangular sliding groove, the sliding base (702) comprises an adjusting sliding block (702 a) which is integrally arranged in the middle of the lower surface of the bearing table (6) and has a rectangular structure, the left end face and the right end face of the adjusting sliding block (702 a) are respectively screwed with a supporting stud (702 b), the outer end parts of the two supporting studs (702 b) are respectively provided with a limiting sliding block (702 c) which is in a rectangular structure and is in threaded connection with the limiting sliding block, and the outer side walls of the two supporting studs are respectively sleeved with a locking nut (702 d) tightly attached to the adjusting sliding block (.
4. A combined supporting structure for the lateral earthquake resistance of a three-span bridge according to claim 1, wherein: the inner side surfaces of the two limiting blocking platforms (5) are provided with a plurality of connecting seats (705) through embedding, and the hydraulic dampers (703) are connected to the connecting seats (705) in a one-to-one correspondence mode.
5. A combined supporting structure for the lateral earthquake resistance of a three-span bridge according to claim 1, wherein: the upper connecting frame (803) is fixedly connected with the connecting lug (801), and the lower connecting frame (805) is fixedly connected with the pier through a plurality of bolts.
6. A combined supporting structure for the lateral earthquake resistance of a three-span bridge according to claim 1, wherein: the sliding grooves (701) are distributed at equal intervals; all the hydraulic dampers connected to the same limiting blocking platform (5) are distributed at equal intervals.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010566511.5A CN111705628B (en) | 2020-06-19 | 2020-06-19 | Combined supporting structure for transverse earthquake resistance of three-span bridge |
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|---|---|---|---|
| CN202010566511.5A CN111705628B (en) | 2020-06-19 | 2020-06-19 | Combined supporting structure for transverse earthquake resistance of three-span bridge |
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| CN111705628B CN111705628B (en) | 2021-09-24 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227235A (en) * | 2020-11-13 | 2021-01-15 | 重庆交通大学 | Bridge is consolidated and is prevented roof beam body structure that falls |
| CN112942072A (en) * | 2021-02-04 | 2021-06-11 | 四川省交通勘察设计研究院有限公司 | Beam falling prevention structure of assembled bridge |
| CN113818335A (en) * | 2021-10-27 | 2021-12-21 | 赵晓晓 | Bridge anti-seismic structure |
| CN114016396A (en) * | 2021-11-30 | 2022-02-08 | 重庆交通职业学院 | Combined supporting structure for transverse earthquake resistance of three-span bridge |
| CN115419181A (en) * | 2022-08-10 | 2022-12-02 | 中筑立方建设有限公司 | A earthquake-resistant structure for building engineering |
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| CN112227235A (en) * | 2020-11-13 | 2021-01-15 | 重庆交通大学 | Bridge is consolidated and is prevented roof beam body structure that falls |
| CN112227235B (en) * | 2020-11-13 | 2022-02-22 | 重庆交通大学 | Bridge is consolidated and is prevented roof beam body structure that falls |
| CN112942072A (en) * | 2021-02-04 | 2021-06-11 | 四川省交通勘察设计研究院有限公司 | Beam falling prevention structure of assembled bridge |
| CN113818335A (en) * | 2021-10-27 | 2021-12-21 | 赵晓晓 | Bridge anti-seismic structure |
| CN114016396A (en) * | 2021-11-30 | 2022-02-08 | 重庆交通职业学院 | Combined supporting structure for transverse earthquake resistance of three-span bridge |
| CN114016396B (en) * | 2021-11-30 | 2023-05-12 | 重庆交通职业学院 | Combined supporting structure for transverse earthquake resistance of three-span bridge |
| CN115419181A (en) * | 2022-08-10 | 2022-12-02 | 中筑立方建设有限公司 | A earthquake-resistant structure for building engineering |
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