CN108316162A - A kind of pre-pressing system installation method of bridge hanging basket cantilever construction - Google Patents
A kind of pre-pressing system installation method of bridge hanging basket cantilever construction Download PDFInfo
- Publication number
- CN108316162A CN108316162A CN201810289298.0A CN201810289298A CN108316162A CN 108316162 A CN108316162 A CN 108316162A CN 201810289298 A CN201810289298 A CN 201810289298A CN 108316162 A CN108316162 A CN 108316162A
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- China
- Prior art keywords
- hanging basket
- rigid structure
- fixedly mounted
- concrete
- cushion cap
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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
- E01D21/10—Cantilevered erection
Abstract
The invention discloses a kind of pre-pressing system installation methods of bridge hanging basket cantilever construction, include the following steps：First, when pouring concrete cushion cap, pre-buried fining twisted steel；Then, in pier coping portion position pour concrete No. 0 block of rigid structure；It is symmetrically installed two groups of rigid structure construction hanging baskets on No. 0 block top of the rigid structure of concrete；Again then, the pre-pressing system of bridge hanging basket cantilever construction is installed：Lateral Hanging Basket cross bearer and Hanging Basket shear structure are fixedly mounted at the outer end position at the top of every group of rigid structure construction hanging basket；Cross bearer cushion cap is fixedly mounted immediately below the cantilever of every group of rigid structure construction hanging basket, cross bearer cushion cap upper surface is fixedly mounted upper load hanger, food-through tension jack is fixedly mounted on upper load hanger；Lower load hanger is fixedly mounted on pre-buried fining twisted steel, and steel wire bundle tensioning is between lower load hanger and food-through tension jack.The pre-pressing system installation method of the present invention has the advantages of being easily installed and removing.
Description
Technical field
The present invention relates to a kind of a kind of installations of the pre-pressing system of bridge hanging basket cantilever more particularly to bridge hanging basket cantilever construction
Method.
Background technology
The precompressed construction operation of traditional bridge hanging basket cantilever construction typically uses heap earth bag, water tank or hanging weight
Carry out the precompressed operation of bridge hanging basket cantilever construction；Its preloading method is more original, and the precompressed for being not easy to meet large-tonnage design is made
Industry technology requires, and the command displacement point in precompressed work progress is more, and operation is cumbersome and work efficiency is low.Next heap earth bag used,
The formation for the precompressed construction operation that water tank or hanging weight carry out bridge hanging basket cantilever construction is lack of standardization, it is difficult to meet scene peace
Entirely, the job requirements of civilized construction；This is mainly the precompressed operator of the precompressed construction operation use of bridge hanging basket cantilever construction
Formula and construction technology need to improve.Its main purpose tested is test in the main stress structure of design load Hanging Basket
The stress of part and deformation eliminate the inelastic deformation of Hanging Basket to examine the actual bearer ability and security reliability of Hanging Basket, measure
Go out reference of the Hanging Basket flexible deformation as adjustment mould absolute altitude, while examining the design and processing quality of Hanging Basket.
Invention content
In view of the above shortcomings of the prior art, the technical problem to be solved by the present invention is to：How a kind of bridge extension is provided
The pre-pressing system installation method of basket cantilever construction.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions：
A kind of pre-pressing system installation method of bridge hanging basket cantilever construction, it is characterised in that include the following steps：
First, when pouring concrete cushion cap 2, pre-buried fining twisted steel 1；
Then, after bridge pier moulding by casting, No. 0 block 4 of the rigid structure of pour concrete in pier coping portion position；It pours and builds up in concrete No. 0 block 4 of rigid structure
After type, two groups of rigid structure construction hanging baskets 5 are symmetrically installed on No. 04 top of block of the rigid structure of concrete；
Again then, the pre-pressing system for installing bridge hanging basket cantilever construction, when installation：
Lateral Hanging Basket cross bearer 7 is fixedly mounted at the outer end position at every group of 5 top of rigid structure construction hanging basket；
Lateral Hanging Basket shear structure 6 is fixedly mounted on every group of rigid structure construction hanging basket 5；
Cross bearer cushion cap 11 is fixedly mounted immediately below the cantilever of every group of rigid structure construction hanging basket 5, close to concrete on cross bearer cushion cap 11
The inner end of rigid No. 0 block 4 of structure is fixedly mounted on 4 bottom outer end of No. 0 block of the rigid structure of concrete, far from the outer of pier stud 3 on cross bearer cushion cap 11
Side is fixedly linked by fining twisted steel 9 and nut with Hanging Basket cross bearer 7, and 11 upper surface of cross bearer cushion cap is fixedly mounted and holds
Food-through tension jack 15 is fixedly mounted on upper load hanger 12 for power hanger 12；
Lower load hanger 13 is fixedly mounted on fining twisted steel pre-buried in the concrete cushion cap 2 immediately below food-through tension jack 15
On 1, the both ends of steel wire bundle 14 are by the exceptionally straight tensioning of anchorage between lower load hanger 13 and food-through tension jack 15.
Compared with the existing technology compared with the advantages of pre-pressing system installation method of bridge hanging basket cantilever construction of the invention has
It is：
1, pre-pressing system includes that Hanging Basket cross bearer 7, fining twisted steel 9 and cross bearer cushion cap 11, upper load hanger 12, lower load are hung
Frame 13, and（As shown in Figure 2）In the food-through tension jack 15 that upper load hanger 12 is fixedly mounted, and in punching
Draw the steel wire bundle 14 being tensioned by anchorage between jack 15 and lower load hanger 13.As shown in Figure 1, in pre-pressing system,
Food-through tension jack 15 is symmetrically installed about concrete No. 0 block 4 of rigid structure and precompressed operation can be completed, have it is simple for structure, be easy to
The advantages of conveniently assembling, being also easy to quickly remove.
2, pre-pressing system using the present invention can carry out fast after the installation of the steel structure construction hanging basket 5 on No. 0 block 4 of rigid structure
Prompt, stable and reliable large-tonnage precompressed operation.The preloading method of the bridge hanging basket cantilever construction of the present invention is using " precompressed is applied
Weight " --- namely steel wire bundle tension tonnage form is used, it is easy to the stretching force by controlling food-through tension jack 15, comes
The large-tonnage precompressed operation controlled and implemented.
3, the prestress pipe that pre-pressing system installation method of the invention will not reserve No. 0 block end face of the rigid structure of concrete causes brokenly
It is bad.
It 4, will not be to No. 0 block babinet 4 of the rigid structure of concrete using the prestressing force pulling force of large-tonnage come when implementing precompressed Hanging Basket cantilever
Structure damage.
5, the height of entire pre-pressing system and concrete cushion cap 2 are close to the height between rigid structure construction hanging basket 5, press in precompressed
When can become apparent observe rigid structure construction hanging basket 5 dynamic degree of disturbing variation, to more it is accurate quickly observation construct
The stress deformation of Hanging Basket 5 obtains better Pre-compression experiment of hanging basket effect.
Description of the drawings
Fig. 1 is the schematic diagram for the pre-pressing system installed using the present invention.
Fig. 2 is the left view of pre-pressing system in Fig. 1.
In figure label for：1-fining twisted steel, 2-concrete cushion caps, 3-pier studs, 4-rigid No. 0 blocks of structure, 5-rigid structure constructions are hung
Basket, 6-Hanging Basket shear structures, 7-Hanging Basket cross bearers, 8-Hanging Basket linking beams, 9-fining twisted steels, 10-fining twisted steels,
11-cross bearer cushion caps, 12-load hangers, 13-load drop in beams, 14-steel wire bundles, 15-food-through tension jacks.
Specific implementation mode
The pre-pressing system of the present invention is pacified with reference to a kind of technical solution of the preloading method of bridge hanging basket cantilever construction
Dress method is described in further detail.
A kind of preloading method of bridge hanging basket cantilever construction includes the following steps：
（1）It prepares：The processing for carrying out symmetrical just structure construction hanging basket 5 prepares and Hanging Basket shear structure 6（For example, shown in Fig. 2
Shearing resistance truss structure）, Hanging Basket cross bearer 7, Hanging Basket linking beam 8 and cross bearer cushion cap 11, upper load hanger 12, lower load hanger 13
Preparation；Steel wire bundle 14 and food-through tension jack 15（Also referred to as：Centre-hole jack）Preparation；
（2）Installation（As pre-pressing system installation method of the invention）：According to production engineering specifications, when pouring concrete cushion cap 2, in advance
Bury fining twisted steel 1（Fining twisted steel 1 is arranged in 3 both sides of pier stud, and the fining twisted steel 1 per side is longitudinal along concrete cushion cap 2
At least one set of distribution, every group includes four fining twisted steels 1, and the upper end of four fining twisted steels 1 is exposed at concrete and holds in every group
The top of platform 2 and for for corresponding four perforation on the same lower load hanger 13 across then, four being screwed in using nut
The upper end of root fining twisted steel 1 can form lower load hanger 13 and limit）；
Then, after bridge pier moulding by casting, No. 0 block 4 of the rigid structure of pour concrete in pier coping portion position（In the bottom of rigid No. 0 block 4 of structure of concrete
The preformed hole that fining twisted steel 10 vertically passes through is reserved at outer end）；According to the pre-pressing system form shown in Fig. 1, in the rigid structure of concrete 0
After number 4 pouring molding of block, in two pier location concretes No. 0 block of rigid structure（Also referred to as：No. 0 block of pier top）4 tops, be symmetrically installed two groups it is rigid
Structure construction hanging basket 5；And Hanging Basket shear structure 6, Hanging Basket cross bearer 7, Hanging Basket linking beam 8 are hung with cross bearer cushion cap 11, upper load
Frame 12, lower load hanger 13 are on the position of bridge floor longitudinal direction；And upper load hanger 12, lower load hanger 13 in such as Fig. 2
Both ends installation steel wire bundle 14 and food-through tension jack 15 are set, constitutes the pre-pressing system of bridge hanging basket cantilever construction, specifically
When mounted：
Lateral Hanging Basket cross bearer 7 is fixedly mounted at the outer end position at every group of 5 top of rigid structure construction hanging basket；
Lateral Hanging Basket shear structure 6 is fixedly mounted on every group of rigid structure construction hanging basket 5；
Cross bearer cushion cap 11 is fixedly mounted immediately below the cantilever of every group of rigid structure construction hanging basket 5, close to concrete on cross bearer cushion cap 11
The inner end of No. 0 block 4 of rigid structure is fixedly mounted on 4 bottom outer end of No. 0 block of the rigid structure of concrete（As shown in Figure 1, the inside of cross bearer cushion cap 11
End is by vertically passing through the fining twisted steel 10 of 4 bottom outside end preformed hole of No. 0 block of the rigid structure of concrete and in fining twisted steel 10
The nut of both ends installation is fixed）, the outboard end far from pier stud 3 on cross bearer cushion cap 11 passes through（Vertical）Finish rolling screw thread
Steel 9 and nut are fixedly linked with Hanging Basket cross bearer 7, and upper load hanger 12, upper load is fixedly mounted in 11 upper surface of cross bearer cushion cap
Food-through tension jack 15 is fixedly mounted on hanger 12；
Lower load hanger 13 is fixedly mounted on fining twisted steel pre-buried in the concrete cushion cap 2 immediately below food-through tension jack 15
On 1, the both ends of steel wire bundle 14 pass through anchorage（Vertical）Tensioning is tightened in lower load hanger 13 and food-through tension jack
Between 15；
（3）According to precompressed operation procedure as defined in arrangement and method for construction, first carries out concrete No. 0 block 4 of rigid structure and construct, applied when being symmetrically installed rigid structure
It, then can be after pre-pressing system be installed, to rigid structure construction hanging basket 5 when work Hanging Basket 5 is separately mounted to concrete rigid No. 04 direction end socket of block of structure
Carry out precompressed construction；In precompressed operation, in the symmetrical upper load hanger 12 of rigid structure construction hanging basket 5, lower 13 position of load hanger
Steel wire bundle 14 is installed, is mounted on upper load hanger 12 using food-through tension jack 15, then it can be according to the precompressed of design
Tonnage carries out precompressed operation to rigid structure construction hanging basket 5；According to installation steps working backward, then can carry out complete on construction hanging basket 5
Portion's pre-pressing system removes operation, completes whole construction operations of the precompressed of Hanging Basket cantilever construction, carries out the formal work of rigid frame bridge
Industry is constructed；
The brief description of the process of the precompressed installation method of above-mentioned bridge hanging basket cantilever construction is：
（1）According to production engineering specifications, when pouring concrete cushion cap 2, pre-buried fining twisted steel 1 →（2）Symmetrical just structure construction is carried out to hang
The processing preparation of basket 5 →（3）Hanging Basket shear structure 6, Hanging Basket cross bearer 7, Hanging Basket linking beam 8 and cross bearer cushion cap 11, upper load
Hanger 12, lower load hanger 13 preparation →（4）The preparation of steel wire bundle 14 and food-through tension jack 15 →（5）It is rigid in concrete
After No. 04 pouring molding of block of structure, on No. 04 top of block of the rigid structure of two pier location concretes, be symmetrically installed rigid structure construction hanging basket 5 →（6）Peace
Fill Hanging Basket shear structure 6, Hanging Basket cross bearer 7, Hanging Basket linking beam 8 and cross bearer cushion cap 11, upper load hanger 12, lower load hanger
13→（7）The upper load hanger 12 of such as Fig. 2,13 position both ends of lower load hanger install steel wire bundle 14 →（8）Punching is installed
Formula stretch-draw jack 15 →（9）The pre-pressing system of formation bridge hanging basket cantilever construction →（10）It then can be according to the precompressed tonnage of design
Precompressed operation is carried out to rigid structure construction hanging basket 5.
Pre-pressing system used by the preloading method of above-mentioned bridge hanging basket cantilever construction can be applied in the steel structure on No. 0 block 4 of concrete
After work Hanging Basket 5 is installed, quick, stable and reliable large-tonnage precompressed operation is carried out.It is to use steel strand wires again that the precompressed, which is applied,
Beam tension tonnage form is the large-tonnage precompressed operational method for being easy to control and implement, and can meet site safety, civilized construction
Job requirements；It easily reaches under general condition, the construction technology mass effect needed for cradle construction precompressed operation.
It the above is only the preferred embodiment of the present invention, need to point out it is that this skill is not being departed from for those skilled in the art
Under the premise of art scheme, several modifications and improvements can also be made, the technical solution of above-mentioned modification and improvement, which should equally be considered as, to be fallen
Enter the claimed range of the claims.
Claims (1)
1. a kind of pre-pressing system installation method of bridge hanging basket cantilever construction, which is characterized in that include the following steps：
First, concrete cushion cap is being poured（2）When, pre-buried fining twisted steel（1）；
Then, after bridge pier moulding by casting, No. 0 block of the rigid structure of pour concrete in pier coping portion position（4）；In concrete No. 0 block of rigid structure（4）It pours
After building up type, in concrete No. 0 block of rigid structure（4）Top is symmetrically installed two groups of rigid structure construction hanging baskets（5）；
Again then, the pre-pressing system for installing bridge hanging basket cantilever construction, when installation：
In every group of rigid structure construction hanging basket（5）Lateral Hanging Basket cross bearer is fixedly mounted at the outer end position at top（7）；
In every group of rigid structure construction hanging basket（5）It is upper that lateral Hanging Basket shear structure is fixedly mounted（6）；
In every group of rigid structure construction hanging basket（5）Cantilever immediately below be fixedly mounted cross bearer cushion cap（11）, cross bearer cushion cap（11）On
Close to concrete No. 0 block of rigid structure（4）Inner end be fixedly mounted on concrete No. 0 block of rigid structure（4）Bottom outer end, cross bearer cushion cap（11）It is upper remote
From pier stud（3）Outboard end pass through fining twisted steel（9）With nut and Hanging Basket cross bearer（7）It is fixedly linked, cross bearer cushion cap
（11）Upper load hanger is fixedly mounted in upper surface（12）, upper load hanger（12）Upper fixed installation food-through tension jack
（15）；
Lower load hanger（13）It is fixedly mounted on food-through tension jack（15）The concrete cushion cap of underface（2）In pre-buried finish rolling
Screw-thread steel（1）On, steel wire bundle（14）Both ends by the exceptionally straight tensioning of anchorage in lower load hanger（13）With food-through tension thousand
Jin top（15）Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810289298.0A CN108316162A (en) | 2018-03-30 | 2018-03-30 | A kind of pre-pressing system installation method of bridge hanging basket cantilever construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810289298.0A CN108316162A (en) | 2018-03-30 | 2018-03-30 | A kind of pre-pressing system installation method of bridge hanging basket cantilever construction |
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| CN108316162A true CN108316162A (en) | 2018-07-24 |
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| CN201810289298.0A Pending CN108316162A (en) | 2018-03-30 | 2018-03-30 | A kind of pre-pressing system installation method of bridge hanging basket cantilever construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350139A (en) * | 2020-03-12 | 2020-06-30 | 湖北省路桥集团有限公司 | Construction method of light hanging basket |
| CN113737653A (en) * | 2021-08-11 | 2021-12-03 | 广东水电二局股份有限公司 | Prepressing device of bearing support and using method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111350139A (en) * | 2020-03-12 | 2020-06-30 | 湖北省路桥集团有限公司 | Construction method of light hanging basket |
| CN111350139B (en) * | 2020-03-12 | 2021-08-20 | 湖北省路桥集团有限公司 | Construction method of light hanging basket |
| CN113737653A (en) * | 2021-08-11 | 2021-12-03 | 广东水电二局股份有限公司 | Prepressing device of bearing support and using method thereof |
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Application publication date: 20180724 |