CN108385545A - A kind of preloading method of bridge hanging basket cantilever construction - Google Patents
A kind of preloading method of bridge hanging basket cantilever construction Download PDFInfo
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- CN108385545A CN108385545A CN201810289297.6A CN201810289297A CN108385545A CN 108385545 A CN108385545 A CN 108385545A CN 201810289297 A CN201810289297 A CN 201810289297A CN 108385545 A CN108385545 A CN 108385545A
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- hanging basket
- construction
- load hanger
- precompressed
- rigid structure
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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
- E01D21/105—Balanced cantilevered erection
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of preloading methods of bridge hanging basket cantilever construction, characterized in that includes the following steps：（1）Prepare rigid structure construction hanging basket and Hanging Basket shear structure, Hanging Basket cross bearer, Hanging Basket linking beam and cross bearer cushion cap, upper load hanger, lower load hanger, steel wire bundle and food-through tension jack；（2）Installation：On No. 0 block top of the rigid structure of two pier location concretes, rigid structure construction hanging basket and Hanging Basket shear structure, Hanging Basket cross bearer, Hanging Basket linking beam and cross bearer cushion cap, upper load hanger, lower load hanger are symmetrically installed on the position of bridge floor longitudinal direction；In upper load hanger, lower load hanger position both ends installation steel wire bundle and food-through tension jack, the pre-pressing system of bridge hanging basket cantilever construction is formed；（3）Precompressed operation.The preloading method of the present invention, is easy to the precompressed of bridge hanging basket cantilever construction and the precompressed design and construction of Hanging Basket cantilever construction.
Description
Technical field
The present invention relates to a kind of bridge hanging basket cantilever more particularly to a kind of preloading methods of bridge hanging basket cantilever construction.
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 preloading method of basket cantilever construction is easy to the precompressed of bridge hanging basket cantilever construction and the precompressed design of Hanging Basket cantilever construction and applies
Work.
In order to solve the above-mentioned technical problem, present invention employs the following technical solutions：
A kind of preloading method of bridge hanging basket cantilever construction, which is characterized in that include the following steps：
（1）It prepares：When pouring concrete cushion cap 2, pre-buried fining twisted steel 1；It is prepared by the processing for carrying out symmetrical just 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 hanger 12, lower load
The preparation of frame 13；The preparation of steel wire bundle 14 and food-through tension jack 15；
（2）Installation：After No. 04 pouring molding of block of the rigid structure of concrete, on No. 04 top of block of the rigid structure of two pier location concretes, it is symmetrically installed just
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；Upper load hanger 12,13 position two of lower load hanger in such as Fig. 2
End installation steel wire bundle 14 and food-through tension jack 15, form the pre-pressing system of bridge hanging basket cantilever construction；
（3）Precompressed operation：It first carries out No. 0 block 4 of the rigid structure of concrete to construct, when being symmetrically installed rigid structure construction hanging basket 5, to be separately mounted to concrete rigid
When No. 04 direction end socket of block of structure, then precompressed construction can be carried out to rigid structure construction hanging basket 5 after pre-pressing system is installed；Make in precompressed
When industry, in rigid structure construction hanging basket 5, symmetrically steel wire bundle 14 is installed in upper load hanger 12, lower 13 position of load hanger, using wearing
Core type stretch-draw jack 15 be mounted on upper load hanger 12 on, then can according to design precompressed tonnage to rigid structure construction hanging basket 5 into
Row precompressed operation；According to installation steps working backward, then it can carry out whole pre-pressing systems on construction hanging basket 5 and remove operation, it is complete
At whole construction operations of the precompressed of Hanging Basket cantilever construction, the formal job execution of rigid frame bridge is carried out.
Compared with the existing technology compared with the preloading method of bridge hanging basket cantilever construction of the invention, which has advantage, is：
1, the pre-pressing system that the preloading method of symmetrical Hanging Basket cantilever of the invention uses includes Hanging Basket cross bearer 7, fining twisted steel 9
With cross bearer cushion cap 11, upper load hanger 12, lower load hanger 13, and（As shown in Figure 2）It is fixed in upper load hanger 12
The food-through tension jack 15 of installation, and be tensioned by anchorage between food-through tension jack 15 and lower load hanger 13
Steel wire bundle 14.As shown in Figure 1, in pre-pressing system, food-through tension jack 15 is symmetrically pacified about No. 0 block 4 of the rigid structure of concrete
Dress precompressed operation can be completed, have it is simple for structure, the advantages of being easy to conveniently assemble, be also easy to quickly remove.
2, the pre-pressing system in the preloading method of bridge hanging basket cantilever construction using the present invention, can be on No. 0 block 4 of rigid structure
Steel structure construction hanging basket 5 install after, carry out it is quick, stablize and reliable large-tonnage precompressed operation.The bridge hanging basket of the present invention is outstanding
The preloading method of arm construction is using " weight is applied in precompressed " --- namely steel wire bundle tension tonnage form is used, it is easy to wear by control
The stretching force of core type stretch-draw jack 15, come the large-tonnage precompressed operation controlled and implemented.
3, the pre-pressing system in the preloading method of bridge hanging basket cantilever construction of the invention will not be to No. 0 block end face of the rigid structure of concrete
Reserved prestress pipe damages.
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 of the used pre-pressing system of 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 present invention is described in further detail below in conjunction with the accompanying drawings.
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：According to production engineering specifications, when pouring concrete cushion cap 2, pre-buried 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 at least one set along 2 genesis analysis of concrete cushion cap, and every group includes four essences
Screw-thread steel 1 is rolled, and the upper end of four fining twisted steels 1 is exposed at the top of concrete cushion cap 2 and for supplying the same lower load in every group
Corresponding four perforation are across then, the upper end that four fining twisted steels 1 are screwed in using nut can be held under on hanger 13
Power hanger 13 forms 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）It according to precompressed operation procedure as defined in arrangement and method for construction of the present invention, first carries out concrete No. 0 block 4 of rigid structure and constructs, when being symmetrically installed
It, then can be after pre-pressing system be installed, to the construction of rigid structure when rigid structure construction hanging basket 5 is separately mounted to concrete rigid No. 04 direction end socket of block of structure
Hanging Basket 5 carries out precompressed construction；In precompressed operation, in the symmetrical upper load hanger 12 of rigid structure construction hanging basket 5, lower load hanger 13
Steel wire bundle 14 is installed in position, is mounted on upper load hanger 12 using food-through tension jack 15, then can be according to design
Precompressed tonnage carries out precompressed operation to rigid structure construction hanging basket 5；According to installation steps working backward, then can carry out on construction hanging basket 5
Whole pre-pressing systems remove operation, complete Hanging Basket cantilever construction precompressed whole construction operations, carrying out rigid frame bridge just
Formula job execution；
The brief description of the process of the preloading 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 the bridge hanging basket cantilever construction of the present invention, can be in the steel on No. 0 block 4 of concrete
After structure construction hanging basket 5 is installed, quick, stable and reliable large-tonnage precompressed operation is carried out.It is to use steel again that the precompressed, which is applied,
Strand bundle tension tonnage form is the large-tonnage precompressed operational method for being easy to control and implement, can meet site safety, civilization is applied
The job requirements of work；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 (2)
1. a kind of preloading method of bridge hanging basket cantilever construction, which is characterized in that include the following steps：
（1）It prepares：Pouring concrete cushion cap（2）When, pre-buried fining twisted steel（1）；Carry out symmetrical just structure construction hanging basket（5）Processing
Preparation and Hanging Basket shear structure（6）, Hanging Basket cross bearer（7）, Hanging Basket linking beam（8）With cross bearer cushion cap（11）, upper load hangs
Frame（12）, lower load hanger（13）Preparation；Steel wire bundle（14）And food-through tension jack（15）Preparation；
（2）Installation：In concrete No. 0 block of rigid structure（4）After pouring molding, in two pier location concretes No. 0 block of rigid structure（4）Top, it is symmetrical to pacify
Fill rigid structure construction hanging basket（5）And Hanging Basket shear structure（6）, Hanging Basket cross bearer（7）, Hanging Basket linking beam（8）With cross bearer cushion cap
（11）, upper load hanger（12）, lower load hanger（13）On the position of bridge floor longitudinal direction；In upper load hanger（12）, lower load
Hanger（13）Position both ends are installed by steel wire bundle（14）And food-through tension jack（15）, form bridge hanging basket cantilever construction
Pre-pressing system；
（3）Precompressed operation：First carry out rigid No. 0 block of structure of concrete（4）Construction, when being symmetrically installed rigid structure construction hanging basket（5）It is separately mounted to
Concrete No. 0 block of rigid structure（4）It, then can be after pre-pressing system be installed, to rigid structure construction hanging basket when direction end socket（5）Carry out precompressed construction；
In precompressed operation, in rigid structure construction hanging basket（5）Symmetrically upper load hanger（12）, lower load hanger（13）Steel is installed and is twisted in position
Harness（14）, using food-through tension jack（15）Mounted on upper load hanger（12）On, then it can be according to the precompressed ton of design
Position is to rigid structure construction hanging basket（5）Carry out precompressed operation；According to installation steps working backward, then construction hanging basket can be carried out（5）On
Whole pre-pressing systems remove operation, complete whole construction operations of the precompressed of Hanging Basket cantilever construction, carry out the formal of rigid frame bridge
Job execution.
2. the preloading method of bridge hanging basket cantilever construction according to claim 1, which is characterized in that pre-pressing system satchel includes
Basket cross bearer（7）, fining twisted steel suspender belt（1）With cross bearer cushion cap（11）, upper load hanger（12）, lower load hanger（13）,
In upper load hanger（12）, lower load hanger（13）The steel wire bundle of position both ends installation（14）And food-through tension jack
（15）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810289297.6A CN108385545A (en) | 2018-03-30 | 2018-03-30 | A kind of preloading method of bridge hanging basket cantilever construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810289297.6A CN108385545A (en) | 2018-03-30 | 2018-03-30 | A kind of preloading method of bridge hanging basket cantilever construction |
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| Publication Number | Publication Date |
|---|---|
| CN108385545A true CN108385545A (en) | 2018-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810289297.6A Pending CN108385545A (en) | 2018-03-30 | 2018-03-30 | A kind of preloading method of bridge hanging basket cantilever construction |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008231706A (en) * | 2007-03-19 | 2008-10-02 | Ps Mitsubishi Construction Co Ltd | Construction method for capital section for cantilever erection method for bridge |
| CN201972094U (en) * | 2011-03-03 | 2011-09-14 | 中铁四局集团第一工程有限公司 | Prepressing system of hanging basket in suspending irrigation construction |
-
2018
- 2018-03-30 CN CN201810289297.6A patent/CN108385545A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008231706A (en) * | 2007-03-19 | 2008-10-02 | Ps Mitsubishi Construction Co Ltd | Construction method for capital section for cantilever erection method for bridge |
| CN201972094U (en) * | 2011-03-03 | 2011-09-14 | 中铁四局集团第一工程有限公司 | Prepressing system of hanging basket in suspending irrigation construction |
Non-Patent Citations (2)
| Title |
|---|
| 李伟平等: "高墩桥菱形挂篮钢绞线反支点预压施工技术", 《公路与汽运》 * |
| 艾振喜: "浅谈悬浇梁反拉预压施工技术应用", 《建筑机械》 * |
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Application publication date: 20180810 |