CN112647412A - Old bridge new railing structure and construction method thereof - Google Patents
Old bridge new railing structure and construction method thereof Download PDFInfo
- Publication number
- CN112647412A CN112647412A CN202110005383.1A CN202110005383A CN112647412A CN 112647412 A CN112647412 A CN 112647412A CN 202110005383 A CN202110005383 A CN 202110005383A CN 112647412 A CN112647412 A CN 112647412A
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- plate
- foundation
- railing
- embedded steel
- old bridge
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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
- E01D19/10—Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges
- E01D19/103—Parapets, railings ; Guard barriers or road-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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a new railing structure for an old bridge and a construction method thereof, wherein the new railing structure comprises a steel railing, a foundation and an embedded steel plate; the foundation is made of concrete, is in an inverted L shape, and can be clamped at the end part of an auxiliary bridge wing plate of the cut old bridge; the embedded steel plate is fixedly connected to the upper end face of the foundation; a bolt pair is arranged on the embedded steel plate, the foundation and the wing plate in a penetrating way, so that the foundation and the wing plate are connected in a fastening way; the lower end of the railing is fixedly connected with the embedded steel plate. The novel guardrail has the advantages of reasonable design, simple and firm structure and convenient construction, can ensure that the anti-collision performance of the new guardrail can fully meet the standard requirement, can avoid the damage to the original old bridge structure and the environment, and is very worthy of popularization.
Description
Technical Field
The invention relates to a building structure and a construction method, in particular to a bridge structure and a construction method thereof, and specifically relates to a new railing structure for an old bridge and a construction method thereof.
Background
With the development of urban construction, municipal infrastructure construction is rapidly advancing. At present, some old bridges which are long in construction age need to replace the auxiliary roadway running rail in the new process, so that the auxiliary roadway running rail can meet the requirement of collision avoidance. However, the auxiliary bridge wing plate of the old bridge is often smaller in thickness and cannot meet the requirements of the bar planting specification, so that a railing structure must be additionally designed so as to meet the new requirements of the old bridge and avoid damaging the original structure of the old bridge.
Disclosure of Invention
The invention aims to solve the problems encountered in the existing old bridge new reconstruction, and provides a new old bridge guardrail structure and a construction method thereof.
The technical scheme of the invention is as follows:
a new railing structure for old bridge comprises a steel railing, a foundation and an embedded steel plate; the foundation is made of concrete, is in an inverted L shape, and can be clamped at the end part of an auxiliary bridge wing plate of the cut old bridge; the embedded steel plate is fixedly connected to the upper end face of the foundation; a bolt pair is arranged on the embedded steel plate, the foundation and the wing plate in a penetrating way, so that the foundation and the wing plate are fixedly connected; the railing is columnar, and its lower extreme with pre-buried steel sheet fixed connection.
Furthermore, the bottom surface of the embedded steel plate is provided with an annular steel bar which is connected with the steel bar framework of the foundation through welding.
Further, the device also comprises an upper backing plate, a lower backing plate and a wedge-shaped backing plate; the upper backing plate is a rectangular thin plate and is provided with a circular mounting hole, and a gasket is arranged between the bolt head and the embedded steel plate; the lower backing plate is a rectangular thin plate and is provided with a waist-shaped mounting hole; the wedge-shaped base plate is in a thin plate shape, the longitudinal section of the wedge-shaped base plate is in a wedge shape, and a circular mounting hole is formed in the wedge-shaped base plate; the lower backing plate and the wedge-shaped backing plate are sequentially arranged between the bottom surface of the wing plate and the nut from top to bottom.
Further, a base is arranged at the lower end of the handrail; the base is in a thin plate shape, and the area of the base is larger than the lower end face of the railing; the base is welded on the embedded steel plate.
Furthermore, the device also comprises a plurality of supporting plates; the supporting plate is triangular, and is uniformly and vertically arranged at the joint of the railing and the base.
A construction method for an old bridge to form a new railing structure comprises the following steps:
1) dismantling the concrete foundation of the original railing of the old bridge by adopting a static nondestructive cutting method;
2) measuring and positioning a wing plate of an auxiliary bridge of the old bridge, and punching a bolt hole by adopting a hole taking machine;
3) binding a reinforcement cage of a foundation, and firmly welding the annular steel bars of the embedded steel plates with the reinforcement cage;
4) after sequentially penetrating through bolt holes in the embedded steel plate and the wing plate, preliminarily fixing the embedded steel plate by matching double nuts, an upper base plate, a lower base plate and a wedge-shaped base plate;
5) building a template of a foundation, and then pouring to obtain a reinforced concrete foundation;
6) after the strength of the concrete reaches the standard requirement, secondarily screwing the double nuts;
7) and finishing the manufacture of the steel railing, and welding the base of the steel railing on the embedded steel plate.
Furthermore, epoxy mortar is poured into the bolt hole.
The invention has the beneficial effects that:
the guardrail is reasonable in design, simple and firm in structure and convenient to construct, can fully meet the requirement of guardrail anti-collision performance standard, can avoid damage to the original old bridge structure and environment, and is worthy of popularization.
Drawings
FIG. 1 is a top view of a portion of the present invention.
Fig. 2 is a sectional view a-a of fig. 1.
Wherein: 1-a railing; 2-a base; 3, pre-burying a steel plate; 4-a base; 5-lower backing plate; 6-double nuts; 7-a screw; 8-a wedge-shaped base plate; 9-wing plate; 10-upper backing plate; 11-support plate.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 and 2.
A new railing structure for old bridge comprises a railing 1, a foundation 4 and an embedded steel plate 3.
Railing 1 is the steel column, and its lower extreme is equipped with base 2. The base 2 is in a thin plate shape, the area of the base 2 is larger than the lower end face of the railing 1, and the railing 1 is arranged on the base 2 in the middle. Preferably, a plurality of support plates 11 are also included. This backup pad 11 is triangle-shaped, even vertical set up in the junction of railing 1 and base 2 plays the stiffening.
The basis 4 is made by the concrete, for falling L shape, can the joint assist the tip of pterygoid lamina 9 of bridge in the old bridge after the cutting, so that can with railing 1 installs on this basis 4.
The embedded steel plate 3 is rectangular, and the area of the embedded steel plate is larger than that of the base 2. The bottom surface of the embedded steel plate 3 is provided with annular steel bars which are connected with the steel bar framework of the foundation 4 through welding, so that the embedded steel plates are firmly arranged on the upper end surface of the foundation 1.
The bolt pair is also included, and a screw rod of the bolt pair penetrates through the embedded steel plate, the foundation and the wing plate from top to bottom and is fastened at the threaded end of the screw rod by double nuts. Before installation, corresponding screw holes can be drilled on the wing plates 9, so that bolts can conveniently penetrate through the corresponding screw holes.
Further, the device comprises an upper backing plate 10, a lower backing plate 5 and a wedge-shaped backing plate 8. The upper backing plate 10 is a rectangular thin plate and is provided with a circular mounting hole, and a gasket is arranged between the bolt head and the embedded steel plate 3. The lower backing plate 5 is a rectangular thin plate and is provided with a waist-shaped mounting hole, so that the lower backing plate is convenient to adjust during mounting. The wedge-shaped base plate 8 is in a thin plate shape, the longitudinal section of the wedge-shaped base plate is in a wedge shape, and a circular mounting hole is formed in the wedge-shaped base plate. The wedge angle of the wedge-shaped backing plate is matched with the oblique angle of the lower end face of the wing plate 9, so that the wedge-shaped backing plate can be spliced with the wing plate 9 to form a planar mounting surface. The lower backing plate 5 and the wedge-shaped backing plate 8 are sequentially padded between the bottom surface of the wing plate 9 and the double nuts 6 from top to bottom, so that the fastening surfaces of the double nuts 6 are planes, the installation and the operation are convenient, and the connection is firmer.
The base 2 is welded on the embedded steel plate 3, so that the railing 1 is stably erected on the foundation 1. Two bolt pairs are respectively arranged on two sides of each railing 1, so that corresponding connection is firmer and more balanced.
The invention relates to a construction method for a new railing structure of an old bridge, which comprises the following steps:
1) dismantling the concrete foundation of the original railing of the old bridge by adopting a static nondestructive cutting method;
2) measuring and positioning a wing plate of an auxiliary bridge of the old bridge, and punching a bolt hole by adopting a hole taking machine;
3) binding a reinforcement cage of a foundation, and firmly welding the annular steel bars of the embedded steel plates with the reinforcement cage;
4) after sequentially penetrating through bolt holes in the embedded steel plate and the wing plate, connecting the high-strength bolts by matching with a double nut, an upper base plate, a lower base plate and a wedge-shaped base plate; meanwhile, pouring epoxy mortar into the bolt hole, and preliminarily fixing the embedded steel plate;
5) building a template of a foundation, and then pouring to obtain a reinforced concrete foundation;
6) after the strength of the concrete reaches the standard requirement, secondarily screwing the double nuts to enable the bolts and the reinforced concrete foundation to form a whole and ensure that the embedded steel plate is firmly installed;
7) and finishing the manufacture of the steel railing, and welding the base of the steel railing on the embedded steel plate.
The novel guardrail has the advantages of reasonable design, simple and firm structure and convenient construction, can ensure that the anti-collision performance of the new guardrail can fully meet the standard requirement, can avoid the damage to the original old bridge structure and the environment, and is very worthy of popularization.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (7)
1. A new railing structure for an old bridge comprises a steel railing, and is characterized by further comprising a foundation and an embedded steel plate; the foundation is made of concrete, is in an inverted L shape, and can be clamped at the end part of an auxiliary bridge wing plate of the cut old bridge; the embedded steel plate is fixedly connected to the upper end face of the foundation; a bolt pair is arranged on the embedded steel plate, the foundation and the wing plate in a penetrating way, so that the foundation and the wing plate are fixedly connected; the railing is columnar, and its lower extreme with pre-buried steel sheet fixed connection.
2. The old bridge new handrail structure of claim 1, wherein the bottom surface of the embedded steel plate is provided with an annular steel bar, and the embedded steel plate is connected with the steel bar framework of the foundation through welding.
3. The old bridge new handrail structure of claim 1, further comprising an upper base plate, a lower base plate and a wedge-shaped base plate; the upper backing plate is a rectangular thin plate and is provided with a circular mounting hole, and a gasket is arranged between the bolt head and the embedded steel plate; the lower backing plate is a rectangular thin plate and is provided with a waist-shaped mounting hole; the wedge-shaped base plate is in a thin plate shape, the longitudinal section of the wedge-shaped base plate is in a wedge shape, and a circular mounting hole is formed in the wedge-shaped base plate; the lower backing plate and the wedge-shaped backing plate are sequentially arranged between the bottom surface of the wing plate and the nut from top to bottom.
4. The old bridge new handrail structure of claim 1, wherein the lower end of the handrail is provided with a base; the base is in a thin plate shape, and the area of the base is larger than the lower end face of the railing; the base is welded on the embedded steel plate.
5. The old bridge new railing structure of claim 4, further comprising a plurality of support plates; the supporting plate is triangular, and is uniformly and vertically arranged at the joint of the railing and the base.
6. A construction method of an old bridge new handrail structure according to any one of claims 1 to 5, characterized in that the construction method comprises the following steps:
1) dismantling the concrete foundation of the original railing of the old bridge by adopting a static nondestructive cutting method;
2) measuring and positioning a wing plate of an auxiliary bridge of the old bridge, and punching a bolt hole by adopting a hole taking machine;
3) binding a reinforcement cage of a foundation, and firmly welding the annular steel bars of the embedded steel plates with the reinforcement cage;
4) after sequentially penetrating through bolt holes in the embedded steel plate and the wing plate, preliminarily fixing the embedded steel plate by matching double nuts, an upper base plate, a lower base plate and a wedge-shaped base plate;
5) building a template of a foundation, and then pouring to obtain a reinforced concrete foundation;
6) after the strength of the concrete reaches the standard requirement, secondarily screwing the double nuts;
7) and finishing the manufacture of the steel railing, and welding the base of the steel railing on the embedded steel plate.
7. The construction method of an old bridge new railing structure as set forth in claim 6, wherein epoxy mortar is poured into the bolt hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005383.1A CN112647412A (en) | 2021-01-05 | 2021-01-05 | Old bridge new railing structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110005383.1A CN112647412A (en) | 2021-01-05 | 2021-01-05 | Old bridge new railing structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112647412A true CN112647412A (en) | 2021-04-13 |
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ID=75367425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110005383.1A Withdrawn CN112647412A (en) | 2021-01-05 | 2021-01-05 | Old bridge new railing structure and construction method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN112647412A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09228321A (en) * | 1996-02-28 | 1997-09-02 | Satougumi:Kk | Construction method for repairing bridge |
| KR20010009514A (en) * | 1999-07-10 | 2001-02-05 | 권재원 | A built-up protection wall of the bridge |
| CN103243651A (en) * | 2013-04-24 | 2013-08-14 | 山东科技大学 | Method for fixedly installing and leveling base of metal upright column of bridge guardrail |
| CN107217598A (en) * | 2017-06-09 | 2017-09-29 | 福州大学 | A kind of construction method for improving concrete flexural beam bridge antidumping bearing capacity |
| CN206553924U (en) * | 2017-01-21 | 2017-10-13 | 北京华路安交通科技有限公司 | A kind of many crossbeam combined bridge guardrails |
| CN212128849U (en) * | 2020-03-30 | 2020-12-11 | 中交第一公路勘察设计研究院有限公司 | Prefabricated assembled concrete crash barrier |
-
2021
- 2021-01-05 CN CN202110005383.1A patent/CN112647412A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09228321A (en) * | 1996-02-28 | 1997-09-02 | Satougumi:Kk | Construction method for repairing bridge |
| KR20010009514A (en) * | 1999-07-10 | 2001-02-05 | 권재원 | A built-up protection wall of the bridge |
| CN103243651A (en) * | 2013-04-24 | 2013-08-14 | 山东科技大学 | Method for fixedly installing and leveling base of metal upright column of bridge guardrail |
| CN206553924U (en) * | 2017-01-21 | 2017-10-13 | 北京华路安交通科技有限公司 | A kind of many crossbeam combined bridge guardrails |
| CN107217598A (en) * | 2017-06-09 | 2017-09-29 | 福州大学 | A kind of construction method for improving concrete flexural beam bridge antidumping bearing capacity |
| CN212128849U (en) * | 2020-03-30 | 2020-12-11 | 中交第一公路勘察设计研究院有限公司 | Prefabricated assembled concrete crash barrier |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210413 |