CN110344316B - Ramp bridge steel bar structure and construction method thereof - Google Patents
Ramp bridge steel bar structure and construction method thereof Download PDFInfo
- Publication number
- CN110344316B CN110344316B CN201910641887.5A CN201910641887A CN110344316B CN 110344316 B CN110344316 B CN 110344316B CN 201910641887 A CN201910641887 A CN 201910641887A CN 110344316 B CN110344316 B CN 110344316B
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- steel bar
- ribs
- plate steel
- web
- rib
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 87
- 239000010959 steel Substances 0.000 title claims abstract description 87
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000003466 welding Methods 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 210000000078 claw Anatomy 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a ramp bridge steel bar structure and a construction method thereof. The bottom plate steel bar and the top plate steel bar respectively comprise a bottom bar and a top bar which are arranged close to the outer side of the main body structure, and a distribution bar which is arranged close to the wall of a cavity formed by the bottom plate steel bar, the top plate steel bar and the web plate steel bar; the top plate steel bar is internally provided with a first inclined lacing wire connected with the web steel bar, and the bottom plate steel bar is internally provided with a second inclined lacing wire connected with the web steel bar. Has the advantages of convenient installation and no influence of objective climate conditions.
Description
Technical Field
The invention relates to the field of building construction, in particular to a ramp bridge reinforcing steel bar structure and a construction method thereof.
Background
The bridge reinforced concrete structure has the advantages that the bridge reinforced concrete structure has high strength, high rigidity, high bearing capacity, high earthquake resistance and other performances.
The ramp bridge refers to an accessory connection section of a main line, and can be a 'level crossing ramp', or an 'overpass ramp'. The term "approach" refers to engineering, and generally refers to a small section of auxiliary road that provides vehicles to enter and exit the main road, overhead roads, bridges, platforms, etc. The ramp is often accompanied by gradual changes in width at the junction because of the smaller traffic demand and the greatly reduced width relative to the trunk. With the gradual change of the width, the width of the continuous box girder of the ramp bridge also changes.
At present, the condition that the steel bar binding girder has curvature in the face construction is that the site binding is combined with the measurement and placement construction, so that the construction mode is easy to be influenced by weather to cause delay of construction period on one hand, and on the other hand, the site construction needs to adjust each curvature point, so that the binding speed is low.
Disclosure of Invention
The invention provides a ramp bridge steel bar structure and a construction method thereof.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
providing a ramp bridge steel bar structure, which comprises a bottom plate steel bar, a top plate steel bar and a web plate steel bar;
the bottom plate steel bars and the top plate steel bars respectively comprise bottom bars and top bars which are arranged close to the outer side of the main body structure, and distribution bars which are arranged close to the cavity wall defined by the bottom plate steel bars, the top plate steel bars and the web plate steel bars; the top plate steel bar is internally provided with a first inclined lacing wire connected with the web steel bar, and the bottom plate steel bar is internally provided with a second inclined lacing wire connected with the web steel bar;
a first transverse distribution rib is transversely arranged on the top rib, a plurality of second transverse distribution ribs are transversely arranged on the distribution ribs in the top plate steel bar, and the first transverse distribution ribs are connected with the second transverse distribution ribs through first tie bars;
a third transverse distribution rib is transversely arranged on the bottom rib, a plurality of fourth transverse distribution ribs are transversely arranged on the distribution ribs in the bottom plate steel bar, and the third transverse distribution ribs are connected with the fourth transverse distribution ribs through second tie bars;
the distribution ribs are respectively and vertically connected with the first diagonal lacing wires and the second diagonal lacing wires;
a plurality of groups of frameworks are longitudinally distributed in the web steel bars, a plurality of groups of stirrups are transversely and uniformly sleeved on the frameworks, and a plurality of steel bars transversely penetrate through the frameworks.
Preferably, the framework comprises a pair of framework ribs, a plurality of ribs and third lacing wires are symmetrically arranged among the framework ribs, and the ribs are Z-shaped.
Preferably, the end hook of the stirrup is 90 degrees, and the length of the hook is not less than 10 times of the diameter of the steel bar.
Preferably, the bottom ribs, the top ribs and the framework ribs are all arranged in a double-reinforcing-steel-bar superposition mode.
Further, a ramp bridge steel bar structure construction method is characterized in that: the method comprises the following steps:
A. prefabricating a framework;
B. binding web steel bars at a processing site, and adding steel bars;
C. erecting a template and paving a bottom rib;
D. confirming web side lines and variable cross-section control lines on the template;
E. hoisting web steel bars, and installing according to control lines on the templates;
F. and (5) binding the rest reinforcing steel bars.
Preferably, in the step E, one end of the steel wire rope is connected with the steel bar, and the other end of the steel wire rope is connected to the shoulder pole beam, and the shoulder pole beam is connected with the lifting hook.
Preferably, in the step a, the prefabricated skeleton is welded.
Preferably, the welding process further comprises securing a tool wedge; the wedge-shaped card comprises a claw and a pull rod; one end of the pull rod is provided with a pair of clamping jaws in parallel with the pull rod.
The invention has the advantages that:
1. the efficiency of steel bar binding construction is effectively improved through the prefabricated framework, so that the construction progress is quickened;
2. the construction of the prefabricated framework is stable in working environment in the process relative to the on-site binding, the construction interference is small, and the quality of the finished product is better controlled;
3. the prefabricated framework is not affected by construction conditions, and under the condition that the construction site cannot work due to natural factors, the construction of the prefabricated framework can still be performed in advance, the limitation of objective conditions of the construction site is avoided, and the construction efficiency is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic side view of a skeleton;
FIG. 3 is a schematic structural view of a stirrup;
FIG. 4 is a schematic plan view of the present invention;
FIG. 5 is a schematic diagram of a hoisting of a framework;
FIG. 6 is a schematic view of a wedge card.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and all the inventions which make use of the inventive concept are protected by the spirit and scope of the present invention as defined and defined in the appended claims to those skilled in the art.
Example 1
As shown in fig. 1 to 4, the ramp bridge reinforcement structure comprises a bottom plate reinforcement, a top plate reinforcement and a web plate reinforcement. The bottom plate steel bar and the top plate steel bar respectively comprise a bottom bar 1 and a top bar 2 which are arranged close to the outer side of the main body structure, and a distribution bar 3 which is arranged close to the wall of a cavity formed by the bottom plate steel bar, the top plate steel bar and the web plate steel bar. The first diagonal lacing wires 5 connected with the web steel bars are arranged in the top plate steel bars, the second diagonal lacing wires 501 connected with the web steel bars are arranged in the bottom plate steel bars, the diagonal lacing wires ensure the strength of the corners of the hollow box body of the box girder, and the concentration of local stress is avoided.
A first transverse distributing rib 201 is transversely arranged on the top rib 2, a plurality of second transverse distributing ribs 203 are transversely arranged on the distributing ribs 3 in the top plate reinforcing steel bars, and the first transverse distributing ribs 201 are connected with the second transverse distributing ribs 203 through first tie bars 202.
The third transverse distributing ribs 101 are transversely arranged on the bottom ribs 1, a plurality of fourth transverse distributing ribs 103 are transversely arranged on the distributing ribs 3 in the bottom plate reinforcing steel bars, and the third transverse distributing ribs 101 are connected with the fourth transverse distributing ribs 103 through second tie bars 102.
The first diagonal lacing wire 5 and the second diagonal lacing wire 501 are mutually fixed with the adjacent distribution ribs 3, the distribution ribs 3 are respectively and vertically connected with the first diagonal lacing wire 5 and the second diagonal lacing wire 501, and the first diagonal lacing wire 5 and the second diagonal lacing wire 501 are ensured to be firmly connected with the whole reinforcing steel bar structure.
A plurality of groups of frameworks 4 are longitudinally distributed in the web steel bars, a plurality of groups of stirrups 401 are transversely and uniformly sleeved on the frameworks 4, a plurality of steel bars 404 transversely penetrate through the frameworks 4, the steel bars 404 are convenient to hoist, and local steel bars in the frameworks 4 are prevented from being damaged. The overall design of the framework 4 is convenient for the overall processing and the overall movement of the framework at the places other than the building position. In the construction of the ramp bridge, the connection section with the trunk line has gradual change of width, and the width of the continuous box girder of the ramp bridge also changes. The overall design of the framework 4 is convenient for independent processing in construction, so that on one hand, the limitation of installation site conditions is avoided, and on the other hand, the overall control of the change of the space between the frameworks 4 caused by the change of the width of the continuous box girder is more convenient, thereby avoiding the trouble that curvature control needs to be carried out on each steel bar in construction.
The framework 4 comprises a pair of framework ribs 402, a plurality of ribs 403 and third tie ribs 405 are symmetrically arranged between the framework ribs 402, and the ribs 403 are Z-shaped. The ribs 403 are welded between the ribs 402 to promote the toughness and the contractive elasticity of the ribs 402. Meanwhile, the loosening of the framework 4 in the hoisting and transferring process is avoided.
The end hooks of stirrup 401 are 90 deg., the length of the hooks must not be less than 10 times the diameter of the bar. When the framework 4 faces vibration, the stirrups 401 can still keep the stability of the framework 4, the framework 4 is not scattered, and the anti-seismic coefficient of the ramp bridge is improved.
The bottom rib 1, the top rib 2 and the framework rib 402 are all arranged in a double-reinforcing-steel-bar superposition mode, so that the strength is further improved.
Example 2
The ramp bridge steel bar construction method comprises the following steps:
A. prefabricating a framework 4;
B. binding web steel bars at a processing site, and adding steel bars;
C. erecting a template and paving a bottom rib;
D. confirming web side lines and variable cross-section control lines on the template;
E. hoisting web steel bars, and installing according to control lines on the templates; the bottom of the framework 4 and the bottom reinforcement are sequentially fixed according to the control line, so that each reinforcement is prevented from being fixed one by one.
F. And (5) binding the rest reinforcing steel bars.
In step E, as shown in fig. 5, one end of the steel wire rope is connected to the steel bar 404, and the other end is connected to the shoulder pole beam, where the shoulder pole beam is connected to the hook.
In the step A, a welding mode is adopted for the prefabricated framework.
Example 3
As shown in fig. 6, the welding process also includes securing the tool wedge 6; the wedge-shaped card comprises a claw 601 and a pull rod 602; one end of the pull rod 602 is provided with a pair of claws 601 in parallel to the pull rod 602. Wedge-shaped cards are used for parallel welding of reinforcement bars, and in this patent are used primarily for welding of framework ribs 402 and ribs 403. Before welding, the welded steel bars are placed between the clamping claws 601, and the pull rods 602 are moved to enable the welded steel bars to be in close contact, so that cold joint is avoided. After which welding is started.
Claims (5)
1. The utility model provides a ramp bridge steel bar construction which characterized in that: the steel plate comprises a bottom plate steel bar, a top plate steel bar and a web plate steel bar;
the bottom plate steel bar and the top plate steel bar respectively comprise a bottom bar (1) which is arranged close to the outer side of the main body structure
And the top rib (2) and the distribution rib (3) are arranged close to the cavity wall surrounded by the bottom plate steel bar, the top plate steel bar and the web plate steel bar; a first diagonal lacing wire (5) connected with the web plate steel bar is arranged in the top plate steel bar, and a second diagonal lacing wire (501) connected with the web plate steel bar is arranged in the bottom plate steel bar;
a first transverse distribution rib (201) is transversely arranged on the top rib (2), a plurality of second transverse distribution ribs (203) are transversely arranged on the distribution rib (3) in the top plate steel bar, and the first transverse distribution rib (201) is connected with the second transverse distribution ribs (203) through a first tie bar (202);
a third transverse distribution rib (101) is transversely arranged on the bottom rib (1), a plurality of fourth transverse distribution ribs (103) are transversely arranged on the distribution ribs (3) in the bottom plate steel bar, and the third transverse distribution rib (101) is connected with the fourth transverse distribution ribs (103) through second tie bars (102);
the distribution ribs (3) are respectively and vertically connected with the first diagonal lacing wires (5) and the second diagonal lacing wires (501);
a plurality of groups of frameworks (4) are longitudinally distributed in the web steel bars, a plurality of groups of stirrups (401) are transversely and uniformly sleeved on the frameworks (4), and a plurality of steel bars (404) transversely penetrate through the frameworks (4).
2. The ramp bridge rebar structure of claim 1, wherein: the framework (4) comprises a pair of framework ribs (402), a plurality of ribs (403) and third tie ribs (405) are symmetrically arranged between the framework ribs (402), and the ribs (403) are Z-shaped.
3. The ramp bridge rebar structure of claim 1, wherein: the tail end hook of the stirrup (401) is 90 degrees, and the length of the hook is not less than 10 times of the diameter of the steel bar.
4. The ramp bridge rebar structure of claim 2, wherein: the bottom ribs (1), the top ribs (2) and the framework ribs (402) are all arranged in a double-reinforcement superposition mode.
5. The construction method of the ramp bridge reinforcement structure according to claim 1, wherein: the method comprises the following steps:
A. prefabricating a framework, wherein the prefabricating framework adopts a welding mode; the welding process also comprises a fixing tool wedge (6); the wedge-shaped card comprises a claw (601) and a pull rod (602);
one end of the pull rod (602) is perpendicular to the pull rod (602) and is provided with a pair of clamping jaws (601) in parallel;
B. binding web steel bars at a processing site, and adding steel bars;
C. erecting a template and paving a bottom rib;
D. confirming web side lines and variable cross-section control lines on the template;
E. hoisting web steel bars, installing according to control lines on a template, connecting one end of a steel wire rope with a steel bar (404), connecting the other end of the steel wire rope with a shoulder pole beam (7), and connecting the shoulder pole beam (7) with a lifting hook;
F. and (5) binding the rest reinforcing steel bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910641887.5A CN110344316B (en) | 2019-07-16 | 2019-07-16 | Ramp bridge steel bar structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910641887.5A CN110344316B (en) | 2019-07-16 | 2019-07-16 | Ramp bridge steel bar structure and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110344316A CN110344316A (en) | 2019-10-18 |
| CN110344316B true CN110344316B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910641887.5A Active CN110344316B (en) | 2019-07-16 | 2019-07-16 | Ramp bridge steel bar structure and construction method thereof |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203684102U (en) * | 2013-12-26 | 2014-07-02 | 浙江金筑交通建设有限公司 | Supporting system for precast beam formed by connecting span erection of ramp bridge and main line bridge |
| CN106142338A (en) * | 2016-06-30 | 2016-11-23 | 中交航局第四工程有限公司 | A kind of prefabricated case beam framework of steel reinforcement loose tool binding construction method |
| CN106836556A (en) * | 2017-03-17 | 2017-06-13 | 同济大学 | A kind of composite reinforcing steel bar cage truss support shear wall |
| CN206581148U (en) * | 2016-12-28 | 2017-10-24 | 中铁十四局集团第二工程有限公司 | A kind of Cast-in-situ Beam is without Temporary Piers support |
| CN206839006U (en) * | 2017-05-09 | 2018-01-05 | 中国十七冶集团有限公司 | A kind of processing unit (plant) of bridge reinforcement cage transverse steel circle |
| CN107626822A (en) * | 2017-09-25 | 2018-01-26 | 浙江工业大学 | The adjustable mould of the curved bridge Precast T-Beam of minor radius |
| CN107974943A (en) * | 2017-11-30 | 2018-05-01 | 广州华夏职业学院 | A kind of road and bridge pavement construction method |
| CN210420839U (en) * | 2019-07-16 | 2020-04-28 | 中铁建设集团有限公司 | Ramp bridge steel bar structure |
-
2019
- 2019-07-16 CN CN201910641887.5A patent/CN110344316B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203684102U (en) * | 2013-12-26 | 2014-07-02 | 浙江金筑交通建设有限公司 | Supporting system for precast beam formed by connecting span erection of ramp bridge and main line bridge |
| CN106142338A (en) * | 2016-06-30 | 2016-11-23 | 中交航局第四工程有限公司 | A kind of prefabricated case beam framework of steel reinforcement loose tool binding construction method |
| CN206581148U (en) * | 2016-12-28 | 2017-10-24 | 中铁十四局集团第二工程有限公司 | A kind of Cast-in-situ Beam is without Temporary Piers support |
| CN106836556A (en) * | 2017-03-17 | 2017-06-13 | 同济大学 | A kind of composite reinforcing steel bar cage truss support shear wall |
| CN206839006U (en) * | 2017-05-09 | 2018-01-05 | 中国十七冶集团有限公司 | A kind of processing unit (plant) of bridge reinforcement cage transverse steel circle |
| CN107626822A (en) * | 2017-09-25 | 2018-01-26 | 浙江工业大学 | The adjustable mould of the curved bridge Precast T-Beam of minor radius |
| CN107974943A (en) * | 2017-11-30 | 2018-05-01 | 广州华夏职业学院 | A kind of road and bridge pavement construction method |
| CN210420839U (en) * | 2019-07-16 | 2020-04-28 | 中铁建设集团有限公司 | Ramp bridge steel bar structure |
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| CN110344316A (en) | 2019-10-18 |
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