CN211395350U - Beam expansion joint structure convenient to construct and maintain - Google Patents
Beam expansion joint structure convenient to construct and maintain Download PDFInfo
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- CN211395350U CN211395350U CN201922264762.3U CN201922264762U CN211395350U CN 211395350 U CN211395350 U CN 211395350U CN 201922264762 U CN201922264762 U CN 201922264762U CN 211395350 U CN211395350 U CN 211395350U
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Abstract
A beam expansion joint structure convenient for construction and maintenance comprises a first concrete base part, a second concrete base part and an expansion joint, wherein one end of the first concrete base part, which is close to the expansion joint, is recessed to form a first bearing step, first post-cast concrete is cast on the first bearing step, one side of the first concrete base part, which is far away from the expansion joint, is a first pavement layer which is level with the first post-cast concrete, one end of the second concrete base part, which is close to the expansion joint, is recessed to form a second bearing step, second post-cast concrete which is level with the first post-cast concrete is cast on the second bearing step, and one side of the second concrete base part, which is far away from the expansion joint, is a second pavement layer which is level with the second post-cast concrete; an expansion joint connecting piece is arranged between the first post-cast concrete and the second post-cast concrete and comprises first anisotropic steel, second anisotropic steel and an adhesive tape, the adhesive tape is arranged in the expansion joint and connected between the first anisotropic steel and the second anisotropic steel, and elastic filling materials are filled below the adhesive tape in the expansion joint. The utility model discloses the structure is firm, bearing capacity is good.
Description
Technical Field
The utility model relates to a construction field, concretely relates to roof beam expansion joint structure convenient to construction and maintenance.
Background
The beam expansion joint is an important index in the building design industry, and the expansion joint of the bridge is the important factor. In order to meet the requirement of bridge deck deformation, expansion joints are usually provided between two beam ends, between a beam end and an abutment, or at beam hinge positions. The expansion joint is required to be freely telescopic in two directions parallel to and perpendicular to the axis of the bridge, and the expansion joint is firm and reliable, and when a vehicle runs, the vehicle is smooth and free of sudden jump and noise; the rainwater and garbage soil can be prevented from infiltration and blocking; the installation, the inspection, the maintenance and the dirt elimination are all simple and convenient.
Along with the change of temperature, the width of its expansion joint then can change, when the expansion joint changes, the clearance of flexible subassembly and road surface width then can change, for example when not stretching out and drawing back, the width of its expansion joint is 160mm, and after the weather change, the width of its expansion joint can change between 80mm ~ 240mm, and when the clearance grow at expansion joint then can seriously influence the speed, travelling comfort and the security of driving, even cause the driving safety accident.
The structure of the existing beam expansion joint is not firm enough, and the vehicle has potential safety hazards in a long-time mode; in addition, the existing expansion joint is simply connected through a steel plate, the steel plate is usually fixedly connected in a structure mode for saving trouble, namely the steel plate cannot be detached, and the expansion joint cannot be routinely inspected and maintained in daily use, so that potential safety hazards exist; and because the steel sheet is harder, consequently, the expansion joint that adopts the steel sheet to connect has the travelling comfort relatively poor, and the defect of the easy emergence of car jump in the driving process.
Therefore, the design has better bearing capacity, good stability, convenient maintenance and the requirement of beam expansion and contraction deformation, and the durable expansion joint structure has practical significance.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the above-mentioned problem that prior art exists, provide a roof beam expansion joint structure convenient to construction and maintenance, its structure is firm, bearing capacity is good, and construction, inspection, maintenance are all simple and easy convenience simultaneously.
In order to achieve the above object, the utility model provides a girder expansion joint structure convenient for construction and maintenance, which comprises a girder main body, wherein the girder main body comprises a first concrete base part, a second concrete base part and an expansion joint, the expansion joint is arranged between the first concrete base part and the second concrete base part and is vertical to the direction along the bridge direction, one end of the first concrete base part close to the expansion joint is recessed to form a first bearing step, the first bearing step is cast with first post-cast concrete, one side of the first concrete base part far away from the expansion joint is a first pavement layer level with the first post-cast concrete, one end of the second concrete base part close to the expansion joint is recessed to form a second bearing step, the second bearing step is cast with second post-cast concrete level with the first post-cast concrete, one side of the second concrete base part, which is far away from the expansion joint, is a second pavement layer which is flush with the second post-cast concrete;
an expansion joint connecting piece arranged along the length direction of an expansion joint is arranged between the first post-cast concrete and the second post-cast concrete, the expansion joint connecting piece comprises first anisotropic steel, second anisotropic steel and an adhesive tape, the first anisotropic steel and the second anisotropic steel are respectively positioned at the upper opening of the expansion joint, the adhesive tape is positioned in the expansion joint and connected between the first anisotropic steel and the second anisotropic steel, and elastic filling materials are filled below the adhesive tape in the expansion joint;
a plurality of first anchor bars which are longitudinally arranged and fixedly connected with the side surface of first special-shaped steel are embedded in the first post-cast concrete along the length direction of the expansion joint at intervals, a plurality of second anchor bars which are horizontally arranged and fixedly connected with the side surface of second special-shaped steel are embedded in the second post-cast concrete along the length direction of the expansion joint at intervals, at least one row of vertically arranged first pre-embedded bars are embedded in the first concrete base along the length direction of the expansion joint at intervals, the first pre-embedded bars upwards penetrate into the first post-cast concrete and are connected with the first anchor bars, at least one row of vertically arranged second pre-embedded bars are embedded in the second concrete base along the length direction of the expansion joint at intervals, and the second pre-embedded bars upwards penetrate into the second post-cast concrete and are connected with the first anchor bars;
and a first transverse rib which is transversely arranged is further embedded in the first post-cast concrete along the length direction of the expansion joint, and a second transverse rib which is transversely arranged is further embedded in the second post-cast concrete along the length direction of the expansion joint.
As a further preferable technical solution of the present invention, the material of the first post-cast concrete and the second post-cast concrete is C50 or C40 concrete.
As a further preferable technical proposal of the utility model, the width of the first bearing step is 350-400mm, and the depth is 80-150 mm; the width of the second bearing step is 350-400mm, and the depth is 80-150 mm; the width of the expansion joint is 30-80 mm.
As a further preferable technical solution of the present invention, the distance between the first anchor bars is 200-400mm, and the distance between the second anchor bars is 200-400 mm.
As the utility model discloses a further preferred technical scheme, first anchor bar in longitudinal extension back is the U-shaped to inflection in the first post-cast concrete, the second anchor bar in longitudinal extension back and inflection are the U-shaped in the second post-cast concrete.
As a further preferred technical scheme of the utility model, first pre-buried muscle is bent after upwards extending in first post-cast concrete and level, the pre-buried muscle of second is bent after upwards extending in second post-cast concrete and level.
As a further preferred technical solution of the present invention, two rows of the first pre-embedded ribs are embedded at intervals along the length direction of the expansion joint, wherein the horizontal distance from the first pre-embedded rib to the expansion joint in one row close to the expansion joint is 50mm, and the distance between the two rows of the first pre-embedded ribs is 250 mm; the embedded ribs of the second are embedded in two rows along the length direction of the expansion joint at intervals, wherein the horizontal distance between one row of the embedded ribs close to the expansion joint and the expansion joint is 50mm, and the distance between two rows of the embedded ribs of the second is 250 mm.
The utility model discloses a roof beam expansion joint structure convenient to construction and maintenance through adopting above-mentioned technical scheme, can reach following beneficial effect:
1) the first bearing step and the second bearing step are arranged at the expansion joint, so that construction operation and later maintenance can be conveniently carried out on the expansion joint, and if the first post-cast concrete or the second post-cast concrete is damaged, the first post-cast concrete or the second post-cast concrete can be planed and then reworked and poured, and the foundation part of the beam main body cannot be damaged during planing;
2) the first and second anisotropic steels can effectively protect the corner part of the first post-cast concrete and the corner part of the second post-cast concrete at the expansion joint, thereby prolonging the service life;
3) the first post-cast concrete is internally provided with a first embedded rib and a first transverse rib which are vertical to each other, and the second post-cast concrete is internally provided with a second embedded rib and a second transverse rib which are vertical to each other, so that the structure is firmer and more stable, and the bearing capacity is better;
4) elastic filler is filled between the expansion joints, so that the requirement of expansion deformation of the beam main body is met, the service life of the beam expansion joint is prolonged, the maintenance difficulty of the beam expansion joint is reduced, the construction period is shortened, and the daily maintenance and cleaning work is reduced;
5) the elastic filling material has a good damping and vibration-damping function, effectively improves the stability of a road surface, reduces the influence of vehicle jumping, and therefore prolongs the service life.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the utility model discloses the beam expansion joint structure convenient to construction and maintenance provides the schematic structure of an example.
In the figure: 1. the concrete joint comprises a first concrete base part, a second concrete base part, a first expansion joint, a second expansion joint, a first elastic filling material, a second elastic filling material and a second elastic filling material, wherein the first concrete base part is 2;
101. a first pavement layer 102, first post-cast concrete 103, first anchor bars 104, first deformed steel 105, first embedded bars 106 and first transverse bars;
201. a second pavement layer 202, second post-cast concrete 203, second anchor bars 204, second deformed steel 205, second embedded bars 206 and second transverse bars.
The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for the sake of clarity only, and are not intended to limit the scope of the invention, its relative relationship between the terms and their derivatives, and the scope of the invention should be understood as being limited by the claims.
As shown in fig. 1, the utility model provides a girder expansion joint structure convenient for construction and maintenance, the structure comprises a girder main body, the girder main body comprises a first concrete base 1, a second concrete base 2, and an expansion joint 3, wherein the first concrete base 1 and the second concrete base 2 are sequentially arranged along the bridge direction (bridge axis direction), the expansion joint 3 is arranged between the first concrete base 1 and the second concrete base 2 and is vertical to the bridge direction, one end of the first concrete base 1, which is close to the expansion joint 3, is recessed to form a first bearing step, the first bearing step is cast with a first post-cast concrete 102, one side of the first concrete base 1, which is far away from the expansion joint 3, is a first post-cast layer 101, which is flush with the first post-cast concrete 102, one end of the second concrete base 2, which is close to the expansion joint 3, is recessed to form a second bearing step, the second bearing step is cast with a second post-cast concrete 202, which is flush with the first post-cast concrete 102, one side of the second concrete base 2, which is far away from the expansion joint 3, is provided with a second pavement layer 201 which is flush with the second post-cast concrete 202, and the first pavement layer 101 and the second pavement layer 201 can be an asphalt pavement layer, a concrete pavement layer or other bridge deck pavement materials;
an expansion joint 3 connecting piece arranged along the length direction of the expansion joint 3 is arranged between the first post-cast concrete 102 and the second post-cast concrete 202, the expansion joint 3 connecting piece is used for hardening the upper opening of the expansion joint 3 to prevent vehicles from damaging the corner parts of the first post-cast concrete 102 and the second post-cast concrete 202, the expansion joint 3 connecting piece comprises first anisotropic steel 104, second anisotropic steel 204 and rubber strips 5, the first anisotropic steel 104 and the second anisotropic steel 204 are respectively positioned at the upper opening of the expansion joint 3, the upper surface of the first anisotropic steel 104 is flush with the surface of the first post-cast concrete 102, the upper surface of the second anisotropic steel 204 is flush with the surface of the second post-cast concrete 202, the rubber strips 5 are positioned in the expansion joint 3 and connected between the first anisotropic steel 104 and the second anisotropic steel 204, and elastic fillers 4 are filled in the expansion joint 3 below the rubber strips 5, the elastic filling material 4 is one of polyurethane sealant, organosilicon sealant and polysulfide sealant, the requirement of the beam main body on expansion and contraction deformation is met, the service life of the expansion joint 3 is prolonged, the maintenance difficulty of the expansion joint 3 is reduced, and the adhesive tape 5 is used for upper layer protection, mainly used for preventing water from permeating into the expansion joint 3 and also used for dust prevention;
a plurality of first anchor bars 103 which are longitudinally arranged and fixedly connected with the side surface of the first special-shaped steel 104 are embedded in the first post-cast concrete 102 along the length direction of the expansion joint 3 at intervals, a plurality of second anchor bars 203 which are horizontally arranged and fixedly connected with the side surface of the second special-shaped steel 204 are embedded in the second post-cast concrete 202 along the length direction of the expansion joint 3 at intervals, and the first anchor bars 103 and the second anchor bars 203 are respectively used for firmly fixing the first special-shaped steel 104 and the second special-shaped steel 204 which are correspondingly connected;
at least one row of vertically arranged first embedded ribs 105 are embedded in the first concrete base 1 along the length direction of the expansion joint 3 at intervals, the first embedded ribs 105 upwards penetrate into the first post-cast concrete 102 and are connected with the first anchor ribs 103, at least one row of vertically arranged second embedded ribs 205 are embedded in the second concrete base 2 along the length direction of the expansion joint 3 at intervals, the second embedded ribs 205 upwards penetrate into the second post-cast concrete 202 and are connected with the first anchor ribs 103, the first embedded ribs 105 are used for enhancing the connection strength of the first post-cast concrete 102 and the first concrete base 1, and the second embedded ribs 205 are used for enhancing the connection strength of the second post-cast concrete 202 and the second concrete base 2;
a first transverse rib 106 which is transversely arranged is further embedded in the first post-cast concrete 102 along the length direction of the expansion joint 3, second transverse ribs 206 which are transversely arranged are further embedded in the second post-cast concrete 202 along the length direction of the expansion joint 3, the first transverse ribs 106 are used for further enhancing the self-strength of the first post-cast concrete 102, the second transverse ribs 206 are used for further enhancing the self-strength of the second post-cast concrete 202, and the first transverse rib 106 is perpendicular to the first embedded rib 105 and the first anchor rib 103, the second transverse rib 206 is perpendicular to the second embedded rib 205 and the second anchor rib 203, during the construction process, the first pre-buried rib 105, the first anchor rib 103 and the first transverse cross rib 106 can be bound together by a binding wire, then, the first post-cast concrete 102 is poured, the second pre-buried rib 205, the second anchor rib 203 and the second transverse rib 206 can be bound together by binding wires, and then the second post-cast concrete 202 is poured.
In specific implementation, the first post-cast concrete 102 and the second post-cast concrete 202 are made of C50 or C40 concrete, wherein the dosage of each material of the C5 concrete is as follows according to the mass component ratio: cement P.O42, fine aggregate (medium sand), coarse aggregate, flyash, water reducing agent, mineral powder and water 370: 666: 1087: 74: 4.93: 49: 148, and the compression strength per square centimeter after C50 concrete pouring is not lower than 50 MPA.
In specific implementation, the width of the first supporting step is 350-400mm, and the depth is 80-150 mm; the width of the second bearing step is 350-400mm, and the depth is 80-150 mm; the width of the expansion joint 3 is 30-80 mm.
In specific implementation, the distance between the first anchor bars 103 is 200-400mm, and the distance between the second anchor bars 203 is 200-400 mm. The first anchor bar 103 longitudinally extends in the first post-cast concrete 102 and then is folded back downwards to form a U shape, the second anchor bar 203 longitudinally extends in the second post-cast concrete 202 and then is folded back downwards to form a U shape, and the first anchor bar 103 and the second anchor bar 203 which are in the U-shaped structure can further strengthen the connection strength of the first special-shaped steel 104 in the first post-cast concrete 102 and the connection strength of the second special-shaped steel 204 in the second post-cast concrete 202.
In specific implementation, the first embedded rib 105 extends upward in the first post-cast concrete 102 and is then bent horizontally, and the second embedded rib 205 extends upward in the second post-cast concrete 202 and is then bent horizontally, and is then bent horizontally to increase the tensile strength.
In specific implementation, two rows of the first embedded ribs 105 are embedded at intervals along the length direction of the expansion joint 3, wherein the horizontal distance between one row of the first embedded ribs 105 close to the expansion joint 3 and the expansion joint 3 is 50mm, and the distance between the two rows of the first embedded ribs 105 is 250 mm; two rows of the second embedded ribs 205 are embedded at intervals along the length direction of the expansion joint 3, wherein the horizontal distance between one row of the second embedded ribs 205 close to the expansion joint 3 and the expansion joint 3 is 50mm, and the distance between two rows of the second embedded ribs 205 is 250 mm.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (7)
1. A girder expansion joint structure convenient for construction and maintenance comprises a girder main body, wherein the girder main body comprises a first concrete base part and a second concrete base part which are sequentially arranged along the bridge direction, and an expansion joint which is positioned between the first concrete base part and the second concrete base part and is vertical to the direction along the bridge direction,
one end, close to the expansion joint, of the first concrete base is recessed to form a first bearing step, first post-cast concrete is poured on the first bearing step, a first pavement layer which is flush with the first post-cast concrete is arranged on one side, far away from the expansion joint, of the first concrete base, a second bearing step is recessed on one side, close to the expansion joint, of the second concrete base, a second post-cast concrete which is flush with the first post-cast concrete is poured on the second bearing step, and a second pavement layer which is flush with the second post-cast concrete is arranged on one side, far away from the expansion joint, of the second concrete base;
an expansion joint connecting piece arranged along the length direction of an expansion joint is arranged between the first post-cast concrete and the second post-cast concrete, the expansion joint connecting piece comprises first anisotropic steel, second anisotropic steel and an adhesive tape, the first anisotropic steel and the second anisotropic steel are respectively positioned at the upper opening of the expansion joint, the adhesive tape is positioned in the expansion joint and connected between the first anisotropic steel and the second anisotropic steel, and elastic filling materials are filled below the adhesive tape in the expansion joint;
a plurality of first anchor bars which are longitudinally arranged and fixedly connected with the side surface of first special-shaped steel are embedded in the first post-cast concrete along the length direction of the expansion joint at intervals, a plurality of second anchor bars which are horizontally arranged and fixedly connected with the side surface of second special-shaped steel are embedded in the second post-cast concrete along the length direction of the expansion joint at intervals, at least one row of vertically arranged first pre-embedded bars are embedded in the first concrete base along the length direction of the expansion joint at intervals, the first pre-embedded bars upwards penetrate into the first post-cast concrete and are connected with the first anchor bars, at least one row of vertically arranged second pre-embedded bars are embedded in the second concrete base along the length direction of the expansion joint at intervals, and the second pre-embedded bars upwards penetrate into the second post-cast concrete and are connected with the first anchor bars;
and a first transverse rib which is transversely arranged is further embedded in the first post-cast concrete along the length direction of the expansion joint, and a second transverse rib which is transversely arranged is further embedded in the second post-cast concrete along the length direction of the expansion joint.
2. The beam expansion joint structure convenient for construction and maintenance as claimed in claim 1, wherein the material of the first post-cast concrete and the second post-cast concrete is C50 or C40 concrete.
3. The beam expansion joint structure convenient for construction and maintenance as claimed in claim 1, wherein the width of the first supporting step is 350-400mm, and the depth is 80-150 mm; the width of the second bearing step is 350-400mm, and the depth is 80-150 mm; the width of the expansion joint is 30-80 mm.
4. The beam expansion joint structure convenient for construction and maintenance as claimed in claim 1, wherein the distance between the first anchor bars is 200-400mm, and the distance between the second anchor bars is 200-400 mm.
5. The beam expansion joint structure convenient for construction and maintenance as claimed in any one of claims 1 to 4, wherein said first anchor bar is folded back downwards after extending longitudinally in said first post-cast concrete to form a U-shape, and said second anchor bar is folded back downwards after extending longitudinally in said second post-cast concrete to form a U-shape.
6. The beam expansion joint structure convenient for construction and maintenance as claimed in any one of claims 1 to 4, wherein the first pre-buried rib extends upwards in the first post-cast concrete and then is bent horizontally, and the second pre-buried rib extends upwards in the second post-cast concrete and then is bent horizontally.
7. The beam expansion joint structure convenient to construct and maintain as claimed in any one of claims 1 to 4, wherein two rows of the first embedded ribs are embedded at intervals along the length direction of the expansion joint, wherein the horizontal distance between one row of the first embedded ribs close to the expansion joint and the expansion joint is 50mm, and the distance between the two rows of the first embedded ribs is 250 mm; the embedded ribs of the second are embedded in two rows along the length direction of the expansion joint at intervals, wherein the horizontal distance between one row of the embedded ribs close to the expansion joint and the expansion joint is 50mm, and the distance between two rows of the embedded ribs of the second is 250 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922264762.3U CN211395350U (en) | 2019-12-13 | 2019-12-13 | Beam expansion joint structure convenient to construct and maintain |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922264762.3U CN211395350U (en) | 2019-12-13 | 2019-12-13 | Beam expansion joint structure convenient to construct and maintain |
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| CN211395350U true CN211395350U (en) | 2020-09-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114525726A (en) * | 2022-03-21 | 2022-05-24 | 中铁大桥局第七工程有限公司 | Bailey beam construction trestle expansion joint system and construction method |
| CN115198902A (en) * | 2022-07-12 | 2022-10-18 | 福建九鼎建设集团有限公司 | Concrete expansion joint structure and construction method thereof |
-
2019
- 2019-12-13 CN CN201922264762.3U patent/CN211395350U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114525726A (en) * | 2022-03-21 | 2022-05-24 | 中铁大桥局第七工程有限公司 | Bailey beam construction trestle expansion joint system and construction method |
| CN114525726B (en) * | 2022-03-21 | 2024-01-30 | 中铁大桥局第七工程有限公司 | Beehive beam construction trestle bridge expansion joint system and construction method |
| CN115198902A (en) * | 2022-07-12 | 2022-10-18 | 福建九鼎建设集团有限公司 | Concrete expansion joint structure and construction method thereof |
| CN115198902B (en) * | 2022-07-12 | 2023-09-08 | 福建九鼎建设集团有限公司 | Concrete expansion joint structure and construction method thereof |
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