CN209468700U - A kind of prepressing structure of the main pier bracket of long span stayed-cable bridge - Google Patents
A kind of prepressing structure of the main pier bracket of long span stayed-cable bridge Download PDFInfo
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- CN209468700U CN209468700U CN201920089233.1U CN201920089233U CN209468700U CN 209468700 U CN209468700 U CN 209468700U CN 201920089233 U CN201920089233 U CN 201920089233U CN 209468700 U CN209468700 U CN 209468700U
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- precompressed
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- pier
- outriggers
- intermediate support
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 40
- 210000003205 muscle Anatomy 0.000 claims abstract description 31
- 238000009826 distribution Methods 0.000 claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- 150000001875 compounds Chemical class 0.000 claims description 6
- 230000035807 sensation Effects 0.000 claims description 6
- 238000004873 anchoring Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a kind of prepressing structures of the main pier bracket of long span stayed-cable bridge, including cushion cap, pier shaft and bracket；Bracket includes that two pedestal column outriggers and a pedestal column intermediate support, two pedestal column outriggers and pier stud intermediate support are used as and are supported by longitudinal two rows, lateral seven column steel pipe posts；A crossbeam is respectively provided at the top of each column steel pipe post of two pedestal column outriggers and pier stud intermediate support, three to four distribution beams are routed in crossbeam；Four precompressed regions are respectively divided in two pedestal column outriggers and a pedestal column intermediate support, five to seven tensioning muscle are laid in each precompressed region；The upper end of all tensioning muscle is respectively connect with a set of jack being fixed in distribution beam；The lower end of all tensioning muscle is anchored with the bolt-nut being embedded in cushion cap.The prepressing structure of the utility model has the characteristics that easy to operate, economy is stronger.
Description
Technical field
The utility model relates to a kind of prepressing structures of the main pier bracket of long span stayed-cable bridge.
Background technique
Bridge pier is the building for supporting bridge span structure and permanent section and vehicle active load being reached to ground.Long span stayed-cable bridge is three
Across footpath (136+260+136) m, main pier are twin legged thin wall pier.After the completion of main pier, the construction of No. 0 block can be carried out.No. 0 block beam
Section is the center of continuous T structure, is the key that continuous beam cantilever casting and constructing block part, and be the control block part of system transform.No. 0 block
Construction be usually to set up rack construction on main pier bearing platform.After the completion of bracket is set up and before carrying out top concreting
Precompressed will be carried out to bracket, to verify the rigidity, intensity and overall stability of bracket, it is ensured that it is non-to eliminate ground for construction safety
The influence of flexible deformation and bracket inelastic deformation, the setting for bracket spring quantum provide foundation.No. 0 block bracket of continuous bridge is normal
The precompressed mode seen has sandbag piling prepressing, concrete block piling prepressing, reinforcing bar piling prepressing, water tank piling prepressing etc..Preloading
Precompressed needs to carry a large amount of prepressing materials on bracket, and especially when bridge pier is in water, prepressing materials also need to pass through ship
It repeatedly has bad luck, process is tedious, and time and effort consuming seriously affects construction speed.
Utility model content
A kind of main pier bracket of long span stayed-cable bridge is provided the purpose of the utility model is to overcome the defect of the prior art
Prepressing structure, it has the characteristics that easy to operate, economy is stronger.
Purpose of the utility model is realized as follows: a kind of prepressing structure of the main pier bracket of long span stayed-cable bridge, including
Cushion cap, the pier shaft and bracket being located on cushion cap；The cushion cap includes upper cushion cap and lower cushion cap；The pier shaft is by two thin-walled pier studs
It constitutes；The bracket includes two pedestal column outriggers and a pedestal column intermediate support, in two pedestal column outriggers and pier stud
Between bracket by it is longitudinal it is two rows of, laterally seven column steel pipe posts are as support；Wherein,
Each column steel pipe post at the top and pier stud intermediate support of each column steel pipe post of two pedestal column outriggers
Top is respectively provided with a crossbeam, and the crossbeam on two pedestal column outriggers is routed over four distribution beams, on pier stud intermediate support
Crossbeam three distribution beams are routed over；
Four precompressed regions, i.e. a left precompressed are respectively divided in two pedestal column outriggers and a pedestal column intermediate support
The intermediate precompressed of region, a right precompressed region and two region；The left precompressed region of two pedestal column outriggers and right precompressed zone
The area in domain is identical, and the area in two intermediate precompressed regions of two pedestal column outriggers is identical；A left side for pier stud intermediate support is pre-
Intermediate pressure section is identical with the area in right precompressed region；The area in the intermediate precompressed of two of pier stud intermediate support region is identical；
Six roots of sensation tensioning muscle is respectively laid in the left precompressed region and right precompressed region of two pedestal column outriggers in distribution beam；
Seven tensioning muscle are respectively laid in distribution beam in the intermediate precompressed of two of two pedestal column outriggers region；
Five tensioning muscle are respectively laid in the left precompressed region and right precompressed region of the pier stud intermediate support in distribution beam,
Six roots of sensation tensioning muscle is respectively laid in distribution beam in the intermediate precompressed of two of pier stud intermediate support region；
The upper end of all tensioning muscle is respectively connect with a set of jack being fixed in distribution beam；All tensioning muscle
Lower end is anchored with the bolt-nut being embedded in the cushion cap, also sets up compound steel in the cushion cap concrete of bolt-nut upper end
Muscle mesh sheet.
The prepressing structure of the main pier bracket of above-mentioned long span stayed-cable bridge, wherein among the pier stud outrigger and pier stud
Bracket further includes longitudinal connection structure and lateral connection structure.
The prepressing structure of the main pier bracket of above-mentioned long span stayed-cable bridge, wherein the crossbeam and distribution beam are Two bors d's oeuveres work
Word steel.
The prepressing structure of the main pier bracket of above-mentioned long span stayed-cable bridge, wherein the pre-buried depth of the bolt-nut is
100cm, the interlamellar spacing of compound steel muscle mesh sheet are 8cm.
The prepressing structure of the main pier bracket of the long span stayed-cable bridge of the utility model, which has the following characteristics that, utilizes completion of having constructed
Cushion cap as pre-pressing bracket stress basis, precompressed is carried out to bracket by way of centre-hole jack counter-force precompressed, is compared
Traditional piling prepressing can reduce the processes such as material allocation and transportation, shorten the construction time, and load and discharge time are short, easy to operate,
Prepare without the long period, tests easy to be quick；Other equipment need not be put into, experimentation cost is low, precompression load force it is accurate and
It is easy to control；When finding the problem, it can unload in time, be not susceptible to safety accident.
Detailed description of the invention
Fig. 1 is the elevation of the prepressing structure of the main pier bracket of long span stayed-cable bridge of the utility model；
Fig. 2 is the side view of the prepressing structure of the main pier bracket of long span stayed-cable bridge of the utility model；
Fig. 3 is the precompressed piecemeal schematic diagram of the main pier bracket of long span stayed-cable bridge of the utility model；
Fig. 4 is the floor plan of the reinforcing bar in the prepressing structure of the main pier bracket of the utility model；
Fig. 5 is the pre-buried structure schematic diagram of the reinforcing bar lower end in the prepressing structure of the main pier bracket of the utility model.
Specific embodiment
Below in conjunction with attached drawing, the utility model is described in further detail.
Please refer to Fig. 1 to Fig. 5, the prepressing structure of the main pier bracket of the long span stayed-cable bridge of the utility model, including cushion cap 10,
The pier shaft and bracket being located on cushion cap 10；Cushion cap 10 includes upper cushion cap 12 and lower cushion cap 11；Pier shaft is by two 20 structures of thin-walled pier stud
At.
Bracket includes two pedestal column outriggers and a pedestal column intermediate support, among two pedestal column outriggers and pier stud
Bracket is by longitudinal two rows of, lateral seven column steel pipe posts 30 as support；Branch among two pedestal column outriggers and a pedestal column
Frame further includes longitudinal connection structure 33 and lateral connection structure 34.
In the top of each column steel pipe post 30 of two pedestal column outriggers and each column steel pipe post of pier stud intermediate support
30 top is respectively provided with a crossbeam 31, and four distribution beams 32, pier stud is routed in the crossbeam 31 on two pedestal column outriggers
Three distribution beams 32 are routed in crossbeam 31 on intermediate support；Crossbeam 31 and distribution beam 32 are Two bors d's oeuveres I70a type I-steel
Four precompressed regions, i.e. a left precompressed are respectively divided in two pedestal column outriggers and a pedestal column intermediate support
The intermediate precompressed of region, a right precompressed region and two region；Left precompressed region P1, P9 of two pedestal column outriggers and the right side are pre-
The area of intermediate pressure section P4, P12 are identical, the area of two intermediate precompressed regions P2, P3, P10, P11 of two pedestal column outriggers
It is identical；The left precompressed region P5 of pier stud intermediate support is identical with the area of right precompressed region P8；In two of pier stud intermediate support
Between precompressed region P6, P7 area it is identical；
Cloth in left precompressed region P1, P9 of two pedestal column outriggers and each comfortable distribution beam 32 of right precompressed region P4, P12
If six roots of sensation tensioning muscle 40；In each comfortable distribution beam of the intermediate precompressed of two of two pedestal column outriggers region P2, P3, P10, P11
Lay seven tensioning muscle 40；
Five tensioning are laid in each comfortable distribution beam 32 of the left precompressed region P5 and right precompressed region P8 of pier stud intermediate support
Muscle 40 lays six roots of sensation tensioning muscle 40 in two of pier stud intermediate support each comfortable distribution beams 32 of intermediate precompressed region P6, P7；
All tensioning muscle 40 are all made of the finish rolling deformed bar that diameter is 32mm.The upper end of all tensioning muscle 40
Respectively it is connect with a set of jack 50 being fixed in distribution beam 32；Every set jack 50 is 2 100 tons of centre-hole jacks；
The lower end of all tensioning muscle 40 is anchored with the bolt-nut 41 being embedded in cushion cap 10, and the pre-buried depth of bolt-nut 41 is
100cm；For the firmness for reinforcing tensioning muscle 40, compound steel muscle mesh sheet is also set up in the cushion cap concrete of 41 upper end of bolt-nut
42, to reinforce this part concrete；The interlamellar spacing of compound steel muscle mesh sheet 42 is 8cm, the width and length of reinforced mesh 42
Degree is 40cm.
The prepressing structure of the main pier bracket of the long span stayed-cable bridge of the utility model, by being located in the distribution beam 32 of bracket
Stretching end anchor point and the cushion cap end anchor point being located on cushion cap 10 are connected by tensioning muscle 40, form reaction frame.Jack 50 passes through
Upward pushing tow stretches tensioning muscle 40, so that support force is carried out precompressed by counter-force.When Specific construction, jack can be held by bracket
Precompressed region is divided to be classified implementation load stage by stage by load weight.Anti- precompressed sequentially pours sequence according to the concrete of No. 0 block
It carries out, the first anti-precompressed of the position of first casting concrete, anti-precompressed behind the position of after-pouring concrete.Specific precompressed tension sequence and
Stretching force see the table below:
Using the deformation of level observation bracket observation point during implementing precompressed load, while carrying out precompressed
Measurement record, and it is compared with calculated value, analysis and summary, it finally obtains the load pressure-bearing situation of bracket, makes it
Meet structure stress requirement when No. 0 block concrete pours.
Above embodiments are only for illustration of the utility model, rather than limitations of the present invention, related technical field
Technical staff can also make various transformation or modification in the case where not departing from the spirit and scope of the utility model, because
This all equivalent technical solution also should belong to the scope of the utility model, should be limited by each claim.
Claims (4)
1. a kind of prepressing structure of the main pier bracket of long span stayed-cable bridge, including cushion cap, the pier shaft and bracket that are located on cushion cap；It is described
Cushion cap includes upper cushion cap and lower cushion cap；The pier shaft is made of two thin-walled pier studs；The bracket includes two pedestal column lateral branch
Frame and a pedestal column intermediate support, two pedestal column outriggers and pier stud intermediate support are by longitudinal two rows of, lateral seven column steel pipes
Column is as support；It is characterized in that,
At the top of each column steel pipe post at the top and pier stud intermediate support of each column steel pipe post of two pedestal column outriggers
It is respectively provided with a crossbeam, four distribution beams, the cross on pier stud intermediate support is routed in the crossbeam on two pedestal column outriggers
Three distribution beams are routed in beam；
Four precompressed regions, i.e. a left precompressed zone are respectively divided in two pedestal column outriggers and a pedestal column intermediate support
The intermediate precompressed of domain, a right precompressed region and two region；The left precompressed region and right precompressed region of two pedestal column outriggers
Area it is identical, the area in two of two pedestal column outriggers intermediate precompressed regions is identical；The left precompressed of pier stud intermediate support
Region is identical with the area in right precompressed region；The area in the intermediate precompressed of two of pier stud intermediate support region is identical；
Six roots of sensation tensioning muscle is respectively laid in the left precompressed region and right precompressed region of two pedestal column outriggers in distribution beam；Two
Seven tensioning muscle are respectively laid in distribution beam in the intermediate precompressed of two of pier stud outrigger region；
Five tensioning muscle, pier stud are respectively laid in the left precompressed region and right precompressed region of the pier stud intermediate support in distribution beam
Six roots of sensation tensioning muscle is respectively laid in distribution beam in the intermediate precompressed of two of intermediate support region；
The upper end of all tensioning muscle is respectively connect with a set of jack being fixed in distribution beam；The lower end of all tensioning muscle
It is anchored with the bolt-nut being embedded in the cushion cap, also sets up compound steel muscle net in the cushion cap concrete of bolt-nut upper end
Piece.
2. the prepressing structure of the main pier bracket of long span stayed-cable bridge according to claim 1, which is characterized in that outside the pier stud
Side stand and pier stud intermediate support further include longitudinal connection structure and lateral connection structure.
3. the prepressing structure of the main pier bracket of long span stayed-cable bridge according to claim 1, which is characterized in that the crossbeam and
Distribution beam is Two bors d's oeuveres I-steel.
4. the prepressing structure of the main pier bracket of long span stayed-cable bridge according to claim 1, which is characterized in that the anchoring spiral shell
Female pre-buried depth is 100cm, and the interlamellar spacing of compound steel muscle mesh sheet is 8cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920089233.1U CN209468700U (en) | 2019-01-18 | 2019-01-18 | A kind of prepressing structure of the main pier bracket of long span stayed-cable bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920089233.1U CN209468700U (en) | 2019-01-18 | 2019-01-18 | A kind of prepressing structure of the main pier bracket of long span stayed-cable bridge |
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| Publication Number | Publication Date |
|---|---|
| CN209468700U true CN209468700U (en) | 2019-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920089233.1U Active CN209468700U (en) | 2019-01-18 | 2019-01-18 | A kind of prepressing structure of the main pier bracket of long span stayed-cable bridge |
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| Country | Link |
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| CN (1) | CN209468700U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622091A (en) * | 2020-05-27 | 2020-09-04 | 中铁北京工程局集团第一工程有限公司 | Stress test method for prefabricated bridge pier |
| CN114382018A (en) * | 2022-01-20 | 2022-04-22 | 浙江交工集团股份有限公司 | Cast-in-place box girder 0# block and construction method thereof |
-
2019
- 2019-01-18 CN CN201920089233.1U patent/CN209468700U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111622091A (en) * | 2020-05-27 | 2020-09-04 | 中铁北京工程局集团第一工程有限公司 | Stress test method for prefabricated bridge pier |
| CN114382018A (en) * | 2022-01-20 | 2022-04-22 | 浙江交工集团股份有限公司 | Cast-in-place box girder 0# block and construction method thereof |
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Address after: 200032 No. 139, Xuhui District, Shanghai, Pingjiang Road Patentee after: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee after: CCCC Third Aviation Bureau Sixth Engineering (Xiamen) Co.,Ltd. Patentee after: XIAMEN BRANCH OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Address before: 200032 No. 139, Xuhui District, Shanghai, Pingjiang Road Patentee before: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee before: CCCC Sanya (Xiamen) Engineering Co.,Ltd. Patentee before: XIAMEN BRANCH OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. |