CN110067202A - A kind of steel nose girder and trough girder connection method - Google Patents
A kind of steel nose girder and trough girder connection method Download PDFInfo
- Publication number
- CN110067202A CN110067202A CN201910300280.0A CN201910300280A CN110067202A CN 110067202 A CN110067202 A CN 110067202A CN 201910300280 A CN201910300280 A CN 201910300280A CN 110067202 A CN110067202 A CN 110067202A
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- China
- Prior art keywords
- steel
- girder
- nose girder
- trough
- wire bundle
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Classifications
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of steel nose girders and trough girder connection method, by the way that vertical reinforcement steel plate will be welded between steel nose girder top plate and bottom plate in junction, and weld horizontal reinforces steel plate formation anchor case on steel nose girder web, by being connected as one in the pre-buried steel wire bundle of beam body with anchor case, the power transmission of both steel nose girders and trough girder after connection is uniform, stress performance is good, steel wire bundle is embedded into groove profile web end and is connected as one by anchorage and beam body, and steel nose girder setting anchor case is connected as one with steel wire bundle exposed parts by anchorage, increase the bending strength of steel nose girder Yu groove profile web connecting portion, the installation of steel wire bundle, tensioning process is mature, easy construction, it is easy to grasp.The invention is used for beam connection area.
Description
Technical field
The present invention relates to beam connection areas, more particularly to a kind of steel nose girder and trough girder connection method.
Background technique
When building a bridge, it is contemplated that the requirement above highway, railway line to space and operation security, on design scheme
Trough girder pushing tow scheme is usually selected, above bridge pier or the progress of abutment rear is prefabricated, carries out after the completion by pushing tow jack
Incremental launching construction.Steel nose girder is set in trough girder front end, the purpose is to reduce the maximum cantilever length of trough girder, to reduce groove profile
Internal force of beam front end during incremental launching construction, the use of steel nose girder achieve good effect in incremental launching construction.Currently,
Steel nose girder has the disadvantage that groove profile beam end reinforcing bar is intensive with trough girder junction, vibrates when if pouring trough girder not in place,
It is easy to appear cavity or leakiness, when fining twisted steel tensioning easily causes beam-ends structure to be destroyed, only relies on steel nose girder girder top plate
It is embedded into slot web with bottom plate and fining twisted steel, the weight of unbearable steel nose girder, steel nose girder and slot beam junction are strong
Degree deficiency is easily broken off and leads to grave consequences.
Summary of the invention
The purpose of the present invention is to provide a kind of safe and reliable, steel nose girder of easy construction and trough girder connection methods.
The technical solution used in the present invention is:
A kind of steel nose girder and trough girder connection method, comprising the following steps:
S1: a point several segments make steel nose girder, and vertical add is welded between the first segment top plate and bottom plate of steel nose girder
Strong steel plate, weld horizontal reinforces steel plate and forms anchor case on web；
S2: installation groove profile beam bottom board, by the first segment of steel nose girder hang to groove profile beam end docking location, and be arranged
The firm support steel nose girder of support device；
S3: groove profile beam body prestress pipe, pre-buried connection steel are installed in bottom and abdomen assembling reinforcement in trough girder
Nose girder and trough girder steel wire bundle；
S4: pouring trough girder concrete, reaches design requirement, tensioning and locking steel strand wires to trough girder concrete strength
Beam.
It is further used as the improvement of technical solution of the present invention, and in step sl, the steel nose girder is divided into three segment processing
Production.
It is further used as the improvement of technical solution of the present invention, in step s 2, when hanging steel nose girder first segment, steel nose girder
First segment bottom is equipped with protective layer, hangs in place, the firmware of the firm steel nose girder of setting in the bottom end of steel nose girder first segment.
It is further used as the improvement of technical solution of the present invention, and in step s3, steel wire bundle passes through steel nose girder by pipeline
Anchor case, the both ends of steel wire bundle reserve tensioning length.
It is further used as the improvement of technical solution of the present invention, in step s3, symmetrically sets in trough girder abdomen middle position
Steel wire bundle is set, the steel wire bundle end inside trough girder is embedded to and is fixed using anchorage.
It is further used as the improvement of technical solution of the present invention, in step s 4, using centre-hole jack by steel wire bundle
Single steel strand grading tension in place.
Beneficial effects of the present invention: this steel nose girder and trough girder connection method, in junction steel nose girder top plate and bottom plate it
Between weld it is vertical reinforce steel plate, and weld horizontal reinforces steel plate and forms anchor case on steel nose girder web, is twisted by beam body pre-buried steel
Harness is connected as one with anchor case, and the power transmission of both steel nose girder and trough girder after connection is uniform, stress performance is good, and steel wire bundle is pre-
Embedment groove profile web end is connected as one by anchorage and beam body, and steel nose girder setting anchor case and steel wire bundle exposed parts
It is connected as one by anchorage, increases the bending strength of steel nose girder Yu groove profile web connecting portion, the installation of steel wire bundle,
Tensioning process is mature, and easy construction is easy to grasp.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is the schematic diagram of the embodiment of the present invention.
Specific embodiment
Referring to Fig.1, the present invention is a kind of steel nose girder and trough girder connection method comprising following steps: S1: point several sections
Section production steel nose girder 1, and vertical reinforcement steel plate is welded between the first segment top plate 3 and bottom plate 4 of steel nose girder 1, on web 5
Weld horizontal reinforces steel plate and forms anchor case；S2: installation groove profile beam bottom board, by the first segment of steel nose girder 1 hang to trough girder 2
End docking location, and the firm support steel nose girder 1 of support device is set；S3: steel is bound in the bottom of trough girder 2 and abdomen
Muscle installs 2 main body prestress pipe of trough girder, pre-buried connection steel nose girder 1 and 2 steel wire bundle 6 of trough girder；S4: trough girder is poured
Concrete, band trough girder concrete strength reach design requirement, tensioning and locking steel wire bundle 6.Pass through this connection method, connection
The power transmission of both steel nose girders 1 and trough girder 2 afterwards is uniform, stress performance is good, and it is logical that steel wire bundle 6 is embedded into 2 web end of trough girder
It crosses anchorage to be connected as one with beam body, and steel nose girder 1 is arranged anchor case and connect with 6 exposed parts of steel wire bundle by stretching end anchorage
It is integrated, increases the bending strength of steel nose girder 1 Yu 2 web connecting portion of trough girder, the installation of steel wire bundle 6, tensioning process
Maturation, easy construction are easy to grasp, and steel wire bundle 6 is prestressing tendon, and bearing capacity height, endurance, safety can
It leans on.
As a preferred embodiment of the present invention, in step sl, the steel nose girder 1 is divided into three segment production.Steel is led
Beam 1 is welded into an entirety in factory using steel plate welding piecemeal production, each segment, and bottom surface is welded between adjacent segment
Outside, other faces are connected by screw bolts.Steel nose girder 1 uses variable cross-section form.
As a preferred embodiment of the present invention, in step s 2, when hanging the first segment of steel nose girder 1, steel nose girder 1
One segment bottom is equipped with protective layer, hangs in place, the firmware of the firm steel nose girder 1 of setting in the bottom end of 1 first segment of steel nose girder.
As a preference, supporting firm steel nose girder in the bottom end of 1 first segment of the steel nose girder setting lumps of wood.In step s3, steel strand wires
Beam 6 passes through the anchor case of steel nose girder 1 by pipeline, reserves tensioning length at the both ends of steel wire bundle 6.Further, in step S3
In, it is symmetrical arranged steel wire bundle 6 in 2 abdomen middle position of trough girder, the steel wire bundle 6 inside trough girder 2 is embedded to and uses anchorage
It is fixed.In this embodiment, in 2 abdomen of trough girder, middle position is avoided the permanent steel strand wires position of trough girder 2 and is symmetrically arranged
15.2 steel wire bundle 6 of φ of 7.5m and 5m, steel wire bundle are embedded into 2 inner end of trough girder and are fixed using OVM anchorage, pacified simultaneously
Fill the iron sheet plastic film capicitor of internal diameter 220mm.
As a preferred embodiment of the present invention, since anchor box space limits, when 6 tensioning of steel wire bundle, is very heavy with punching
It pushes up the single steel strand grading tension of steel wire bundle 6 in place.
Certainly, the invention is not limited to above embodiment, and those skilled in the art are without prejudice to originally
Equivalent deformation or replacement can be also made under the premise of spirit, these equivalent variation or replacement are all contained in the application right
It is required that in limited range.
Claims (6)
1. a kind of steel nose girder and trough girder connection method, it is characterised in that: the following steps are included:
S1: point several segment production steel nose girder (1), and welded between the first segment top plate (3) and bottom plate (4) of steel nose girder (1)
Vertical reinforcement steel plate is connect, weld horizontal reinforces steel plate and forms anchor case on web (5)；
S2: installation groove profile beam bottom board, by the first segment of steel nose girder (1) hang to trough girder (2) end docking location, and set
Set firm support steel nose girder (1) of support device；
S3: trough girder (2) main body prestress pipe, pre-buried connection are installed in bottom and abdomen assembling reinforcement in trough girder (2)
Steel nose girder (1) and trough girder (2) steel wire bundle (6)；
S4: pouring trough girder concrete, reaches design requirement, tensioning and locking steel wire bundle (6) to trough girder concrete strength.
2. steel nose girder according to claim 1 and trough girder connection method, it is characterised in that: in step sl, the steel
Nose girder (1) is divided into three segment processing and fabricatings.
3. steel nose girder according to claim 1 and trough girder connection method, it is characterised in that: in step s 2, hang steel
When nose girder (1) first segment, protective layer is added in steel nose girder (1) first segment bottom, is hung in place, in steel nose girder (1) first
The firmware of firm steel nose girder (1) is arranged in the bottom end of segment.
4. steel nose girder according to claim 1 and trough girder connection method, it is characterised in that: in step s3, steel strand wires
Beam (6) passes through the anchor case of steel nose girder (1) by pipeline, reserves tensioning length at steel wire bundle (6) both ends.
5. steel nose girder according to claim 1 and trough girder connection method, it is characterised in that: in step s3, in groove profile
Beam (2) abdomen middle position is symmetrical arranged steel wire bundle (6), and internal steel wire bundle (6) end of embedment trough girder (2) uses anchorage
It is fixed.
6. steel nose girder according to claim 1 and trough girder connection method, it is characterised in that: in step s 4, using wearing
Core type jack by the single steel strand grading tension of steel wire bundle (6) in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910300280.0A CN110067202A (en) | 2019-04-15 | 2019-04-15 | A kind of steel nose girder and trough girder connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910300280.0A CN110067202A (en) | 2019-04-15 | 2019-04-15 | A kind of steel nose girder and trough girder connection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110067202A true CN110067202A (en) | 2019-07-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910300280.0A Pending CN110067202A (en) | 2019-04-15 | 2019-04-15 | A kind of steel nose girder and trough girder connection method |
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| CN (1) | CN110067202A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832859A (en) * | 2021-09-22 | 2021-12-24 | 中建钢构工程有限公司 | Construction method for connecting joint of steel box girder and guide beam |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733308A (en) * | 2012-06-19 | 2012-10-17 | 中铁八局集团昆明铁路建设有限公司 | Method for connecting steel guide girder with box girder |
| CN103614969A (en) * | 2013-12-10 | 2014-03-05 | 中铁二十局集团第一工程有限公司 | Steel truss girder assembling, erecting and construction process |
| KR101433064B1 (en) * | 2013-03-14 | 2014-09-23 | 임성묵 | Composite beam using steel plate beam and tendon and the construction method therefor |
| CN103266571B (en) * | 2013-05-31 | 2015-10-28 | 中交二航局第四工程有限公司安徽分公司 | A kind of gap bridge type steel strand stopping means |
| CN205741937U (en) * | 2016-05-16 | 2016-11-30 | 中电建路桥集团有限公司 | A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure |
-
2019
- 2019-04-15 CN CN201910300280.0A patent/CN110067202A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733308A (en) * | 2012-06-19 | 2012-10-17 | 中铁八局集团昆明铁路建设有限公司 | Method for connecting steel guide girder with box girder |
| KR101433064B1 (en) * | 2013-03-14 | 2014-09-23 | 임성묵 | Composite beam using steel plate beam and tendon and the construction method therefor |
| CN103266571B (en) * | 2013-05-31 | 2015-10-28 | 中交二航局第四工程有限公司安徽分公司 | A kind of gap bridge type steel strand stopping means |
| CN103614969A (en) * | 2013-12-10 | 2014-03-05 | 中铁二十局集团第一工程有限公司 | Steel truss girder assembling, erecting and construction process |
| CN205741937U (en) * | 2016-05-16 | 2016-11-30 | 中电建路桥集团有限公司 | A kind of Wavelike steel webplate nose girder steel reinforced concrete joint portion structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832859A (en) * | 2021-09-22 | 2021-12-24 | 中建钢构工程有限公司 | Construction method for connecting joint of steel box girder and guide beam |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190730 |
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| RJ01 | Rejection of invention patent application after publication |