CN109468946A - A kind of steel construction temporary fastening device and technique for large-scale bent cap free cantilever erection - Google Patents
A kind of steel construction temporary fastening device and technique for large-scale bent cap free cantilever erection Download PDFInfo
- Publication number
- CN109468946A CN109468946A CN201811335669.0A CN201811335669A CN109468946A CN 109468946 A CN109468946 A CN 109468946A CN 201811335669 A CN201811335669 A CN 201811335669A CN 109468946 A CN109468946 A CN 109468946A
- Authority
- CN
- China
- Prior art keywords
- fastening device
- temporary fastening
- bent cap
- steel
- steel construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 94
- 239000010959 steel Substances 0.000 title claims abstract description 94
- 238000010276 construction Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 210000002435 tendon Anatomy 0.000 claims description 3
- 229920006335 epoxy glue Polymers 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 210000005069 ears Anatomy 0.000 claims 1
- 239000003351 stiffener Substances 0.000 abstract description 4
- 238000011065 in-situ storage Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 7
- 239000004593 Epoxy Substances 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035800 maturation Effects 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- 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
Abstract
The present invention relates to a kind of steel construction temporary fastening devices and technique for large-scale bent cap free cantilever erection, it is characterized in that, steel construction temporary fastening device ontology is the cuboid steel structure member being assembled by several steel plates, the top of cuboid steel structure member is equipped with lifting lug, the front side wall of cuboid steel structure member is equipped with fining twisted steel anchor plate, the bottom of fining twisted steel anchor plate is equipped with sash plate, the rear wall of cuboid steel structure member is equipped with vertical stiffener, the left side of cuboid steel structure member is equipped with left side otic placode, one end end of left side otic placode is equipped with pin stick fixation hole, the right side of cuboid steel structure member is equipped with right side otic placode, one end end of right side otic placode also is provided with pin stick fixation hole, steel construction temporary fastening device is fixed on bent cap by pin stick fixation hole on the otic placode of the left and right sides and dedicated pin stick.The present invention realizes ultra-wide large size bent cap without support, the target without cast in situs, and easy construction, significant effect greatly shortens construction period.
Description
[technical field]
It is specifically a kind of for large-scale bent cap free cantilever erection the present invention relates to bent cap segment free cantilever erection technical field is related to
Temporary fastening device and its technique.
[background technique]
In the prior art, it is influenced by transporting and lifting condition, 200 tons or more of large-scale bent cap is difficult to disposably prefabricated install
At.In previous engineering, often using method cast-in-place or that partial precast part is cast-in-place, need to set up temporary support and scene
Casting concrete has an impact site traffic and surrounding enviroment, and construction period is relatively long.
[summary of the invention]
It is an object of the invention to overcome technical problem of the existing technology, in order to realize ultra-wide large size bent cap without support, nothing
The target of cast in situs provides a kind of steel construction temporary fastening device and its technique for large-scale bent cap free cantilever erection.3
To achieve the above object, a kind of steel construction temporary fastening device for large-scale bent cap free cantilever erection is designed, including
Steel construction temporary fastening device ontology, which is characterized in that the steel construction temporary fastening device ontology is spelled by several steel plates
The top of the cuboid steel structure member dressed up, cuboid steel structure member is equipped with lifting lug, the front side of cuboid steel structure member
Wall is equipped with fining twisted steel anchor plate, and the bottom of fining twisted steel anchor plate is equipped with sash plate, cuboid steel structure member
Rear wall be equipped with vertical stiffener, the left side of cuboid steel structure member is equipped with left side otic placode, one end end of left side otic placode
Equipped with pin stick fixation hole, the right side of cuboid steel structure member is equipped with right side otic placode, and one end end of right side otic placode also is provided with pin
Stick fixation hole, steel construction temporary fastening device are fixed on bent cap by pin stick fixation hole on the otic placode of the left and right sides and dedicated pin stick
On.
The left side otic placode is symmetrically set up with right side otic placode, and pin stick fixation hole side is equipped with stiffening plate.
The top of steel construction temporary fastening device is equipped with lifting lug, is connect using lifting lug with hoisting machine.
A kind of technique of the steel construction temporary fastening device for large-scale bent cap free cantilever erection, which is characterized in that will be large-scale
Bent cap is divided into several small-sized bent cap segments, matches prefabricated construction, and the bent cap segment to free cantilever erection matches prefabricated complete in precasting yard
At reserved pin hole is on each section bent cap segment to connect steel construction temporary fastening device；Steel construction temporary fastening device is pairs of
It uses, one group of steel construction temporary fastening device is installed on assembled bent cap segment, another group of steel construction temporary fastening device peace
Loaded on bent cap segment to be assembled, steel construction temporary fastening device passes through pin stick fixation hole on its left and right sides otic placode and dedicated
Rigid pins stick is fixed on bent cap；Segment to be spelled is lifted to matching split state by steel construction temporary fastening device, uses epoxy
It is glued seam.
The fining twisted steel of respective numbers is penetrated between a pair of of temporary fastening device, and jack is set in case tensioning；
Multi-stage prestress fining twisted steel, while unloading hook step by step, until suspension hook unloads completely, boom segments are fixed temporarily completion；To
After the completion of permanent prestressing tendon tensioning, a fining twisted steel is put, recycling and reusing is carried out to temporary fastening device.
When assembled boom segments, epoxy resin mortar is smeared in Mosaic face, the joint form is the vertical piece of corbel type.
A kind of steel construction temporary fastening device and technique for large-scale bent cap free cantilever erection of the invention, realizes ultra-wide
Large-scale bent cap greatly shortens construction period without support, the target without cast in situs, easy construction, significant effect.
[Detailed description of the invention]
Fig. 1 is the device of the invention perspective view
Fig. 2 is main view
Fig. 3 is rearview
Fig. 4 is otic placode structure chart
Fig. 5 is side view
Description of symbols in figure
1 lifting lug, 2 fining twisted steel anchor plates, 3 sash plates, 4 left side otic placodes, 5 left side pin stick fixation holes, 6 right side otic placodes, 7
Sell stick fixation hole, 8 vertical stiffeners, 9 fining twisted steel fixation holes in right side.
[specific embodiment]
Technical solution of the present invention is further elaborated now in conjunction with accompanying drawings and embodiments, it is believed that for a person skilled in the art
It is clear.
As shown in Figs. 1-5, a kind of steel construction temporary fastening device for large-scale bent cap free cantilever erection, including steel construction face
When fixed device noumenon, which is characterized in that the steel construction temporary fastening device ontology is the length being assembled by several steel plates
Cube steel structure member, the top of cuboid steel structure member are equipped with lifting lug, and the front side wall of cuboid steel structure member is equipped with essence
Screw-thread steel anchor plate is rolled, the bottom of fining twisted steel anchor plate is equipped with sash plate, the rear wall of cuboid steel structure member
Equipped with vertical stiffener, the left side of cuboid steel structure member is equipped with left side otic placode, and one end end of left side otic placode is equipped with pin stick
The right side of fixation hole, cuboid steel structure member is equipped with right side otic placode, and one end end of right side otic placode also is provided with pin stick fixation hole,
Steel construction temporary fastening device is fixed on bent cap by pin stick fixation hole on the otic placode of the left and right sides and dedicated pin stick.
The left side otic placode is symmetrically set up with right side otic placode, and pin stick fixation hole side is equipped with stiffening plate.
The top of steel construction temporary fastening device is equipped with lifting lug, is connect using lifting lug with hoisting machine.
A kind of technique of the steel construction temporary fastening device for large-scale bent cap free cantilever erection, which is characterized in that will be large-scale
Bent cap is divided into several small-sized bent cap segments, matches prefabricated construction, and the bent cap segment to free cantilever erection matches prefabricated complete in precasting yard
At reserved pin hole is on each section bent cap segment to connect steel construction temporary fastening device；Steel construction temporary fastening device is pairs of
It uses, one group of steel construction temporary fastening device is installed on assembled bent cap segment, another group of steel construction temporary fastening device peace
Loaded on bent cap segment to be assembled, steel construction temporary fastening device passes through pin stick fixation hole on its left and right sides otic placode and dedicated
Rigid pins stick is fixed on bent cap；Segment to be spelled is lifted to matching split state by steel construction temporary fastening device, uses epoxy
It is glued seam.
The fining twisted steel of respective numbers is penetrated between a pair of of temporary fastening device, and jack is set in case tensioning；
Multi-stage prestress fining twisted steel, while unloading hook step by step, until suspension hook unloads completely, boom segments are fixed temporarily completion；To
After the completion of permanent prestressing tendon tensioning, a fining twisted steel is put, recycling and reusing is carried out to temporary fastening device.
When assembled boom segments, epoxy resin mortar is smeared in Mosaic face, the joint form is the vertical piece of corbel type.
Embodiment
Technique of the invention is used for Shanghai S7 highway new construction, tries to explore in the full precast assembly technical field of bridge,
Make a breakthrough in the fields such as the high block construction of bent cap and buried anchor technique, abutment precast assembly technology.
Large-scale bent cap is divided into several small-sized segments by the technology, matches prefabricated construction, and Mosaic face uses epoxy glue seam, connects
Slit formula is the vertical piece of corbel type.The miniaturization of segment is readily transported and lifts；Matching prefabricated construction may insure seam
It is uniformly closely connected；Mosaic face can guarantee the quality and rapid construction of seam using performance of epoxy bonded.
The especially pioneering vertical piece of corbel type is effectively reduced without the difficulty of construction for supporting vertical piece and wind construction
Danger, construction is simple is quick, and quality is easy to guarantee, through inquiring, not yet finds the application precedent for having such piece in the world at present, opens
The beginning of industry is created.
In the design R&D process of section assembling bent cap, pass through analysis and multiple groups scaled model comparative test, designer
Member continues to optimize the design drawing and arrangement and method for construction of bent cap, it is ensured that bent cap segment free cantilever erection according to test and result of study
The application success of technology.
The successful installation of first batch of segment free cantilever erection bent cap indicates that this technology has been smoothly completed from theoretical, design, examination
The conversion process that demonstration constructed and produced in batches construction to initial workpiece is tested, one phase of Jiang S7 highway, the second stage of the project and military project road are overhead
It is promoted and applied on a large scale in the projects such as engineering.The maturation of the bent cap segment free cantilever erection technology especially vertical piece of corbel type
Using to propulsion bridge prefabrication assembling members miniaturization and lightweight, cancellation support system, raising construction convenience and safety
Degree reduces influence to traffic and suffers from positive and long-range meaning, also further to push building industrialization and all-round popularization
Another solid technical foundation is laid using bridge prefabrication assembled technology, there is landmark meaning.
Claims (6)
1. a kind of steel construction temporary fastening device for large-scale bent cap free cantilever erection, including steel construction temporary fastening device sheet
Body, which is characterized in that the steel construction temporary fastening device ontology is the cuboid steel construction structure being assembled by several steel plates
Part, the top of cuboid steel structure member are equipped with lifting lug, and the front side wall of cuboid steel structure member is anchored equipped with fining twisted steel
Plate, the bottom of fining twisted steel anchor plate are equipped with sash plate, and the rear wall of cuboid steel structure member, which is equipped with, vertically puts more energy into
Plate, the left side of cuboid steel structure member are equipped with left side otic placode, and one end end of left side otic placode is equipped with pin stick fixation hole, cuboid
The right side of steel structure member is equipped with right side otic placode, and one end end of right side otic placode also is provided with pin stick fixation hole, and steel construction is temporarily solid
Determine device to be fixed on bent cap by pin stick fixation hole on the otic placode of the left and right sides and dedicated pin stick.
2. a kind of steel construction temporary fastening device for large-scale bent cap free cantilever erection as described in claim 1, feature exist
In the left side otic placode is symmetrically set up with right side otic placode, and pin stick fixation hole side is equipped with stiffening plate.
3. a kind of steel construction temporary fastening device for large-scale bent cap free cantilever erection as described in claim 1, feature exist
In the top of steel construction temporary fastening device is equipped with lifting lug, is connect using lifting lug with hoisting machine.
4. a kind of technique of the steel construction temporary fastening device for large-scale bent cap free cantilever erection, which is characterized in that cover large size
Beam is divided into several small-sized bent cap segments, matches prefabricated construction, and the bent cap segment to free cantilever erection matches prefabricated completion in precasting yard,
Pin hole is reserved on each section bent cap segment to connect steel construction temporary fastening device；
Steel construction temporary fastening device uses in pairs, and one group of steel construction temporary fastening device is installed on assembled bent cap segment,
Another group of steel construction temporary fastening device is installed on bent cap segment to be assembled, and steel construction temporary fastening device passes through its left and right two
It picks up the ears the pin stick fixation hole on plate and Special rigid pin stick is fixed on bent cap；It is lifted by steel construction temporary fastening device wait spell
Segment is to matching split state, with epoxy glue seam.
5. a kind of technique of the steel construction temporary fastening device for large-scale bent cap free cantilever erection as claimed in claim 4,
It is characterized in that, the fining twisted steel of respective numbers is penetrated between a pair of of temporary fastening device, and jack is set in case tensioning；
Multi-stage prestress fining twisted steel, while unloading hook step by step, until suspension hook unloads completely, boom segments are fixed temporarily completion；To
After the completion of permanent prestressing tendon tensioning, a fining twisted steel is put, recycling and reusing is carried out to temporary fastening device.
6. a kind of technique of the steel construction temporary fastening device for large-scale bent cap free cantilever erection as claimed in claim 4,
It is characterized in that, when assembled boom segments, smears epoxy resin mortar in Mosaic face, the joint form is the vertical piece of corbel type.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810326572 | 2018-04-12 | ||
| CN2018103265727 | 2018-04-12 |
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| Publication Number | Publication Date |
|---|---|
| CN109468946A true CN109468946A (en) | 2019-03-15 |
| CN109468946B CN109468946B (en) | 2024-04-12 |
Family
ID=65672127
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811335669.0A Active CN109468946B (en) | 2018-04-12 | 2018-11-11 | Steel structure temporary fixing device and process for large-scale bent cap cantilever assembly |
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| CN (1) | CN109468946B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318342A (en) * | 2019-07-12 | 2019-10-11 | 上海城建市政工程（集团）有限公司 | A kind of precast segment bent cap free cantilever erection constructing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110318342A (en) * | 2019-07-12 | 2019-10-11 | 上海城建市政工程（集团）有限公司 | A kind of precast segment bent cap free cantilever erection constructing device |
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| Publication number | Publication date |
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| CN109468946B (en) | 2024-04-12 |
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