CN112942052A - Fabricated combined box girder for constructing earthquake-resistant structure and construction method thereof - Google Patents
Fabricated combined box girder for constructing earthquake-resistant structure and construction method thereof Download PDFInfo
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- CN112942052A CN112942052A CN202110146739.3A CN202110146739A CN112942052A CN 112942052 A CN112942052 A CN 112942052A CN 202110146739 A CN202110146739 A CN 202110146739A CN 112942052 A CN112942052 A CN 112942052A
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention provides an assembled combined box girder for constructing an anti-seismic structure and a construction method thereof, and belongs to the technical field of box girder anti-seismic structure construction. The problem of the web fracture easily appears when great load or vibrations are applyed to the roof is solved. The technical scheme is as follows: including shock absorber support, setting at the inside interior support assembly of shock absorber support and the roof at support assembly top including setting up, shock absorber support includes the bottom plate and fixes the web that sets up in bottom plate top both sides, is provided with a plurality of evenly distributed's cross slab on the interior support assembly. The invention has the beneficial effects that: according to the invention, the stepped inner clamping grooves are formed in the inner sides of the webs, and the stepped outer clamping blocks are arranged on the two sides of the inner support component, so that the contact area between the inner support component and the webs is increased, a good vibration isolation effect is achieved, the shear strength of the webs can be enhanced when a large load or vibration is applied to the top plate, the probability of cracks of the webs during vibration is reduced, and the service life of the box girder is prolonged.
Description
Technical Field
The invention relates to the technical field of box girder anti-seismic structure construction, in particular to an assembled combined box girder for constructing an anti-seismic structure and a construction method thereof.
Background
The box girder is one of the middle girders in bridge engineering, the interior of the box girder is hollow, and flanges are arranged on two sides of the upper part of the box girder and are similar to boxes, so that the box girder is named; the problem of structural vibration is becoming increasingly critical in the design of bridges, industrial and civil building structures. Traffic loads produce vertical vibrations on the bridge structure, and seismic loads produce horizontal vibrations in the building structure, and these vibrations can lead to the damage in advance and the collapse of structure. Especially seismic loads, are unpredictable. Current case roof beam includes the roof, sets up two webs and the bottom plate in the roof below, when pouring the shaping to roof, web and bottom plate, and inside has buried the reinforcing bar underground. However, when the box girder is used and a large number of vehicles run on a bridge, the vehicles can vibrate in the running process to enable the box girder to vibrate, but the existing box girder is not subjected to damping treatment, so that the box girder is easy to crack in the long-term vibration process, and the service life is shortened; when the bridge is subjected to a strong earthquake, the bridge can bear a large load instantly, so that large displacement is generated; the bottom of the web plate in the box girder structure bears large pressure, and vertical cracks and even fracture easily occur at the bottom of the web plate when the box girder structure is subjected to large vibration.
How to solve the above technical problems is the subject of the present invention.
Disclosure of Invention
The invention aims to provide an assembled combined box girder for constructing an anti-seismic structure and a construction method thereof, which can increase the contact area between an inner support assembly and a web plate, better reduce vibration propagation and play a good vibration isolation effect.
The invention is realized by the following measures: an assembled combined box girder for constructing an anti-seismic structure comprises a shock absorption support, an inner support assembly arranged in the shock absorption support and a top plate arranged at the top of the inner support assembly, wherein the shock absorption support comprises a bottom plate and web plates fixedly arranged at two sides of the top of the bottom plate, and a plurality of cross diaphragms which are uniformly distributed are arranged on the inner support assembly;
the outer side surfaces of the two webs are obliquely arranged, and the inner side surfaces of the webs are provided with a plurality of stepped inner clamping grooves which are sequentially connected;
the outer side face of the inner support assembly is attached to the inner side face of the web plate.
The outer profile of the damping support is in an inverted trapezoid shape, and the extension direction of the stepped inner clamping groove is the same as the inclination direction of the outer side face of the web plate.
The inner support assembly comprises a first support piece and a second support piece which are symmetrically arranged with respect to the center of the damping support, one butted surface of the first support piece and the second support piece is a vertical surface, one side of the first support piece, which is close to the inner side surface of the web plate, is provided with a plurality of outer clamping blocks which are in a step shape and are sequentially connected, and the outer clamping blocks are clamped with the inner clamping grooves one by one; one side of the second support piece close to the inner side face of the web plate is provided with a plurality of stepped outer clamping blocks which are connected in sequence, and the outer clamping blocks are clamped with the inner clamping grooves one by one.
The inner parts of the first supporting piece and the second supporting piece are both hollow structures.
The top of the vertical surface of the butt joint of the first support piece and the second support piece is provided with a T-shaped connecting groove, and a T-shaped connecting plate is arranged in the connecting groove.
The inner support assembly is provided with a plurality of uniformly distributed transverse partition plate grooves, and the transverse partition plates are placed in the transverse partition plate grooves; the diaphragm plate is a T-shaped solid plate, a T-shaped connecting groove is formed in the top of the diaphragm plate, and the connecting groove corresponds to the connecting plate.
Connecting columns are arranged on the end faces of the web plate and one end of the inner support component, connecting holes are formed in the end face of the other end of the inner support component, the connecting columns are arranged at each right angle of the joint of the inner clamping groove and the outer clamping block, and the connecting holes correspond to the connecting columns in arrangement positions;
triangular top plate clamping grooves are formed in the top ends of the webs, and triangular top plate clamping blocks matched with the top plate clamping grooves are fixedly arranged at the two ends of the bottom of the top plate.
The reinforcing steel bars are uniformly embedded in the damping support, the inner supporting assembly and the top plate when the die is formed.
The top of the inner support assembly is flush with the top end face of the web plate, a plurality of stepped outer clamping blocks which are connected in sequence are arranged on two sides of the bottom of the inner support assembly, and the outer clamping blocks are clamped with the inner clamping grooves one by one.
A construction method of an assembled combined box girder for constructing an earthquake-resistant structure comprises the following steps:
s1, firstly, measuring and determining the span between two permanent piers so as to determine the proper length of a shock absorption support, an inner support assembly and a top plate, prefabricating the shock absorption support with the proper length, manufacturing a plurality of stepped inner clamping grooves, arranging a connecting column on the end face of one end of a web plate, arranging connecting holes on the end face of the other end of the web plate, and arranging a triangular top plate clamping groove on the top end of the web plate;
s2, arranging a plurality of step-shaped outer clamping blocks on one side of the first support piece and one side of the second support piece, arranging a connecting column on the end face of one end, arranging connecting holes on the end face of the other end, and hoisting the first support piece and the second support piece into the damping support by adopting a hoisting frame;
s3, prefabricating and molding a solid diaphragm plate, hoisting and inserting the diaphragm plate into a diaphragm plate groove of the inner support assembly, and filling and fixing gaps between the diaphragm plate and the diaphragm plate groove by adopting mortar;
s4, inserting the connecting plate into the connecting groove at the top of the inner support assembly, and fixing the connecting plate through a fastening bolt;
s5, hoisting the top plate to the tops of the shock absorption support and the inner support assembly, clamping the top plate clamping blocks into the top plate clamping grooves, and finishing construction of the main body structure;
and S6, hoisting the assembled and molded assembled combined box girders to a bridge position by using a crane, and connecting the two adjacent assembled combined box girders by matching through connecting columns and connecting holes.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an assembled combined box girder with a construction anti-seismic structure, wherein a stepped inner clamping groove is arranged on the inner side of a web plate, stepped outer clamping blocks are arranged on two sides of an inner support assembly, the outer clamping blocks are clamped with the inner clamping grooves one by one, the contact area between the inner support assembly and the web plate is increased, a contact surface is arranged between the inner support assembly and the web plate, but the inner support assembly and the web plate are not fixedly connected, so that the vibration propagation can be better reduced, a good vibration isolation effect is achieved, the pressure applied to the lower part by the upper part of the contact part is vertical and is not vertical to the inclined outer side surface of the web plate, the pressure applied to the web plate is further reduced, the anti-shear strength of the web plate can be enhanced when a top plate applies larger load or vibration, the probability of cracks of the web plate;
compared with the common box girder structure, the combined box girder structure has higher tensile strength, obviously reduces the probability of cracking of the combined box girder, and improves the safety and the durability of the structure; and required parts can be prefabricated in a factory and then transported to the site for hoisting, so that the site construction efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a first overall structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic overall structure diagram of the embodiment of the invention.
Fig. 3 is a schematic structural diagram of a hidden top plate according to an embodiment of the present invention.
FIG. 4 is a schematic structural diagram of a diaphragm according to an embodiment of the present invention.
FIG. 5 is a schematic structural diagram of a shock mount according to an embodiment of the present invention.
Fig. 6 is a schematic view of the overall structure of embodiment 2 of the present invention.
Wherein the reference numerals are: 1. a shock-absorbing support; 2. an inner support assembly; 3. a top plate; 4. a diaphragm plate; 5. a transverse clapboard groove; 6. connecting columns; 7. connecting holes; 8. a top plate clamping groove; 9. a top plate clamping block; 101. a base plate; 102. a web; 103. an inner clamping groove; 201. a first support part; 202. a second support part; 203. an outer clamping block; 204. a connecting plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.
Example 1
Referring to fig. 1 to 5, the invention provides a technical scheme that the fabricated combined box girder for constructing an earthquake-proof structure comprises a damping support 1, an inner support component 2 arranged inside the damping support 1 and a top plate 3 arranged at the top of the inner support component 2, wherein the damping support 1 comprises a bottom plate 101 and web plates 102 fixedly arranged at two sides of the top of the bottom plate 101, and a plurality of uniformly distributed diaphragm plates 4 are arranged on the inner support component 2;
the outer side surfaces of the two webs 102 are obliquely arranged, and the inner side surfaces of the webs 102 are provided with a plurality of stepped inner clamping grooves 103 which are sequentially connected;
the outer side of the inner support assembly 2 abuts the inner side of the web 102.
The outer profile of the shock mount 1 is an inverted trapezoid, and the extension direction of the stepped inner clamping groove 103 is the same as the inclination direction of the outer side surface of the web plate 102.
The inner support assembly 2 comprises a first support part 201 and a second support part 202 which are symmetrically arranged at the center of the shock absorption support 1, one butted surface of the first support part 201 and the second support part 202 is a vertical surface, one side of the first support part 201 close to the inner side surface of the web plate 102 is provided with a plurality of stepped outer clamping blocks 203 which are sequentially connected, and the outer clamping blocks 203 are clamped with the inner clamping grooves 103 one by one; one side of the second support part 202 close to the inner side face of the web plate 102 is provided with a plurality of stepped outer clamping blocks 203 which are connected in sequence, and the outer clamping blocks 203 are clamped with the inner clamping grooves 103 one by one.
The inner parts of the first support member 201 and the second support member 202 are hollow structures.
The top of the vertical surface of the first support part 201 and the second support part 202 in butt joint is provided with a T-shaped connecting groove, and a T-shaped connecting plate 204 is arranged in the connecting groove.
A plurality of transverse clapboard grooves 5 which are uniformly distributed are formed in the inner support component 2, and transverse clapboards 4 are placed in the transverse clapboard grooves 5; the diaphragm plate 4 is a solid plate with a T shape, the top of the diaphragm plate 4 is provided with a connecting groove with a T shape, and the connecting groove corresponds to the connecting plate 204.
triangular top plate clamping grooves 8 are formed in the top ends of the two webs 102, and triangular top plate clamping blocks 9 matched with the top plate clamping grooves 8 are fixedly arranged at the two ends of the bottom of the top plate 3.
The steel bars are uniformly embedded in the damping support 1, the inner support assembly 2 and the top plate 3 when the die is formed.
A construction method of an assembled combined box girder for constructing an earthquake-resistant structure comprises the following steps:
s1, firstly, measuring and determining the span between two permanent piers so as to determine the proper length of a shock absorption support 1, an inner support assembly 2 and a top plate 3, prefabricating the shock absorption support 1 with the proper length, manufacturing a plurality of stepped inner clamping grooves 103, arranging a connecting column 6 on one end face of a web plate 102, arranging connecting holes 7 on the other end face of the web plate 102, and arranging a triangular top plate clamping groove 8 at the top end of the web plate 102;
s2, arranging a plurality of stepped outer clamping blocks 203 on one side of the first support member 201 and the second support member 202, arranging a connecting column 6 on the end face of one end, arranging connecting holes 7 on the end face of the other end, and hoisting the first support member 201 and the second support member 202 to the inside of the shock absorption support 1 by adopting a hoisting frame;
s3, prefabricating and molding a solid diaphragm plate 4, hoisting and inserting the diaphragm plate 4 into a diaphragm plate groove 5 of the inner support assembly 2, and filling and fixing a gap between the diaphragm plate 4 and the diaphragm plate groove 5 by adopting mortar;
s4, inserting the connecting plate 204 into a connecting groove at the top of the inner support assembly 2, and fixing the connecting plate through a fastening bolt;
s5, hoisting the top plate 3 to the tops of the shock absorption support 1 and the inner support assembly 2, clamping the top plate clamping block 9 into the top plate clamping groove 8, and finishing construction of a main structure;
and S6, hoisting the assembled and molded assembled combined box girders to a bridge position by using a crane, and connecting the two adjacent assembled combined box girders by matching through a connecting column 6 and a connecting hole 7.
Example 2
Referring to fig. 6, on the basis of embodiment 1, different from embodiment 1, the top of the inner support assembly 2 is flush with the top end surface of the web 3, two sides of the bottom of the inner support assembly 2 are respectively provided with a plurality of stepped outer clamping blocks 203 connected in sequence, and the outer clamping blocks 203 are clamped with the inner clamping grooves 103 one by one.
During construction, the inner support assembly 2 is hoisted into the damping support 1 by adopting a hoisting frame; in will inserting the diaphragm plate groove 5 of interior support component 2 with diaphragm plate 4 hoist and mount, it is fixed to adopt the mortar to pack between the gap of diaphragm plate 4 and diaphragm plate groove 5, hoists shock mount 1 and the top of interior support component 2 with roof 3, and roof fixture block 9 joint is to the integrated circuit board groove 8 in, and the major structure is under construction promptly and is accomplished.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The assembled combined box girder for constructing an anti-seismic structure is characterized by comprising a damping support (1), an inner support component (2) arranged in the damping support (1) and a top plate (3) arranged at the top of the inner support component (2), wherein the damping support (1) comprises a bottom plate (101) and web plates (102) fixedly arranged on two sides of the top of the bottom plate (101), and a plurality of uniformly distributed transverse clapboards (4) are arranged on the inner support component (2);
the outer side surfaces of the two webs (102) are obliquely arranged, and the inner side surfaces of the webs (102) are provided with a plurality of stepped inner clamping grooves (103) which are sequentially connected;
the outer side surface of the inner support assembly (2) is attached to the inner side surface of the web (102).
2. The fabricated combined box girder for constructing an earthquake-proof structure according to claim 1, wherein the outer profile of the shock-absorbing support (1) is an inverted trapezoid, and the extension direction of the stepped inner clamping groove (103) is the same as the inclination direction of the outer side surface of the web (102).
3. The fabricated combined box girder for the construction of an earthquake-resistant structure according to claim 2, wherein the inner support assembly (2) comprises a first support member (201) and a second support member (202) which are arranged in a central symmetry manner of the shock absorption support (1), one surface of the first support member (201) and one surface of the second support member (202) which are in butt joint are vertical surfaces, one side of the first support member (201) close to the inner side surface of the web plate (102) is provided with a plurality of stepped outer clamping blocks (203) which are connected in sequence, and the outer clamping blocks (203) are clamped with the inner clamping grooves (103) one by one; one side, close to the inner side face of the web plate (102), of the second supporting piece (202) is provided with a plurality of stepped outer clamping blocks (203) which are connected in sequence, and the outer clamping blocks (203) are clamped with the inner clamping grooves (103) one by one.
4. The fabricated combination box girder for construction of earthquake-resistant structure according to claim 2, wherein the supporting members I (201) and II (202) are hollow structures at the inner part.
5. The fabricated combined box girder for constructing an earthquake-resistant structure according to claim 2, wherein a T-shaped connecting groove is formed at the top of a vertical surface where the first supporting member (201) and the second supporting member (202) are butted, and a T-shaped connecting plate (204) is arranged in the connecting groove.
6. The fabricated combined box girder for constructing an earthquake-resistant structure according to claim 5, wherein a plurality of uniformly distributed transverse partition plate grooves (5) are formed in the inner support component (2), and the transverse partition plates (4) are placed in the transverse partition plate grooves (5); the transverse partition plate (4) is a T-shaped solid plate, a T-shaped connecting groove is formed in the top of the transverse partition plate (4), and the connecting groove corresponds to the connecting plate (204).
7. The fabricated combined box girder for constructing an earthquake-resistant structure according to claim 3, wherein a connecting column (6) is arranged on one end face of each of the web (102) and the inner support component (2), a connecting hole (7) is formed on the other end face of each of the web and the inner support component, the connecting column (6) is arranged at each right angle of the connection between the inner clamping groove (103) and the outer clamping block (203), and the connecting hole (7) corresponds to the arrangement position of the connecting column (6);
triangular top plate clamping grooves (8) are formed in the top ends of the two webs (102), and triangular top plate clamping blocks (9) matched with the top plate clamping grooves (8) are fixedly arranged at the two ends of the bottom of the top plate (3).
8. The fabricated combined box girder for constructing an earthquake-resistant structure according to claim 1, wherein steel bars are uniformly embedded in the shock absorption support (1), the inner support assembly (2) and the top plate (3) during the molding of a mold.
9. The fabricated combined box girder for the construction of an earthquake-resistant structure according to claim 2, wherein the top of the inner support assembly (2) is flush with the top end surface of the web (3), two sides of the bottom of the inner support assembly (2) are provided with a plurality of stepped outer clamping blocks (203) which are sequentially connected, and the outer clamping blocks (203) and the inner clamping grooves (103) are clamped one by one.
10. A construction method of an assembled combined box girder for constructing an earthquake-resistant structure is characterized by comprising the following steps:
s1, firstly, measuring and determining the span between two permanent piers, determining the proper length of a shock absorption support (1), an inner support assembly (2) and a top plate (3), prefabricating the shock absorption support (1) with the proper length, manufacturing a plurality of stepped inner clamping grooves (103), arranging a connecting column (6) on one end face of a web plate (102), arranging connecting holes (7) on the other end face of the web plate, and arranging triangular top plate clamping grooves (8) on the top end of the web plate (102);
s2, arranging a plurality of stepped outer clamping blocks (203) on one side of a first support piece (201) and one side of a second support piece (202), arranging a connecting column (6) on the end face of one end, arranging connecting holes (7) on the end face of the other end, and hoisting the first support piece (201) and the second support piece (202) into the damping support (1) by adopting a hoisting frame;
s3, prefabricating and molding a solid diaphragm plate (4), hoisting and inserting the diaphragm plate (4) into a diaphragm plate groove (5) of the inner support assembly (2), and filling and fixing gaps between the diaphragm plate (4) and the diaphragm plate groove (5) by adopting mortar;
s4, inserting the connecting plate (204) into a connecting groove at the top of the inner support assembly (2) and fixing the connecting plate through a fastening bolt;
s5, hoisting the top plate (3) to the tops of the shock absorption support (1) and the inner support assembly (2), clamping the top plate clamping block (9) into the top plate clamping groove (8), and finishing construction of the main structure;
and S6, hoisting the assembled and molded assembled combined box girders to a bridge position by using a crane, and connecting the two adjacent assembled combined box girders by matching through a connecting column (6) and a connecting hole (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110146739.3A CN112942052A (en) | 2021-02-03 | 2021-02-03 | Fabricated combined box girder for constructing earthquake-resistant structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110146739.3A CN112942052A (en) | 2021-02-03 | 2021-02-03 | Fabricated combined box girder for constructing earthquake-resistant structure and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215948A (en) * | 2021-05-29 | 2021-08-06 | 江苏旭辰交通科技发展有限公司 | Assembled combined box girder and construction method thereof |
| CN113684752A (en) * | 2021-10-15 | 2021-11-23 | 刘炳书 | Assembled box girder bridge and earthquake-resistant structure thereof |
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| CN108611957A (en) * | 2018-04-09 | 2018-10-02 | 东南大学 | A kind of period composite construction box beam |
| CN210507091U (en) * | 2019-06-18 | 2020-05-12 | 中南大学 | Assembled prestressed combined box girder |
| CN211228037U (en) * | 2019-09-10 | 2020-08-11 | 沈阳建筑大学 | Frivolous assembled steel concrete combination antidetonation bridge structures |
| CN112227177A (en) * | 2020-10-29 | 2021-01-15 | 东南大学 | Periodic box girder structure with vibrators arranged on diaphragm plate |
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2021
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| JP2009161905A (en) * | 2007-12-28 | 2009-07-23 | Kajima Corp | Composite hollow structure of column head part or girder end part of bridge |
| KR20110045535A (en) * | 2009-10-27 | 2011-05-04 | 윤성균 | Tuned Mass Liquid Damper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113215948A (en) * | 2021-05-29 | 2021-08-06 | 江苏旭辰交通科技发展有限公司 | Assembled combined box girder and construction method thereof |
| CN113684752A (en) * | 2021-10-15 | 2021-11-23 | 刘炳书 | Assembled box girder bridge and earthquake-resistant structure thereof |
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