CN111877170A - Jig frame for integral prefabrication and hoisting of large pier body reinforcing steel bars and pier body reinforcing steel bar construction method - Google Patents
Jig frame for integral prefabrication and hoisting of large pier body reinforcing steel bars and pier body reinforcing steel bar construction method Download PDFInfo
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- CN111877170A CN111877170A CN202010723132.2A CN202010723132A CN111877170A CN 111877170 A CN111877170 A CN 111877170A CN 202010723132 A CN202010723132 A CN 202010723132A CN 111877170 A CN111877170 A CN 111877170A
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- pier body
- main frame
- hoisting
- steel
- steel bars
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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
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a jig frame for integral prefabrication and hoisting of large pier body reinforcing steel bars, which comprises a main frame consisting of square steel, wherein cross bars and a plurality of reinforcing bars are respectively arranged on the front side surface, the rear side surface, the left side surface and the right side surface of the main frame; the top and the bottom of the main frame are respectively provided with a plurality of steel clamping pieces, and a plurality of clamping grooves for clamping steel bars are uniformly arranged on each steel clamping piece at intervals. The invention realizes the standardization and prefabrication of the large pier body steel bar construction, accelerates the turnover speed of the pier body platform support and the template, reduces the investment cost, reduces the construction difficulty, ensures the steel bar installation precision, and has simple structure, easy manufacture and high repeated utilization rate.
Description
Technical Field
The invention relates to the technical field of integral prefabrication and hoisting construction of pier body reinforcing steel bars in bridge construction, in particular to a jig frame for integral prefabrication and hoisting of large pier body reinforcing steel bars and a pier body reinforcing steel bar construction method.
Background
The traditional pier body steel bar construction is in a split type, and operators install main bars, stirrups and lacing wires on a construction platform support one by one and gradually. This traditional construction method has the following disadvantages: 1. the method is not suitable for the current requirements of standardized and prefabricated bridge construction. 2. The construction period of a single pier body is long, and the turnover speed of the pier body platform support and the template is low. 3. The vertical butt joint degree of difficulty of owner muscle is great, and is difficult to guarantee the muffjoint department installation quality. The thickness of the concrete protective layer is difficult to ensure. 4. The process of the scattered assembly belongs to high-altitude operation, and the safety risk is high.
In addition, pier shaft reinforcing bar adopts the prefabricated hoist and mount of branch face, subsection in the current bridge work progress, mainly has following several: 1. and a small positioning clamping groove is manufactured, and the single-side main reinforcement prefabrication hoisting is realized. 2. And manufacturing a small jig frame, and realizing segmental prefabrication and hoisting of stirrups. But the integral prefabrication and hoisting of the large pier body reinforcing steel bars cannot be realized.
Disclosure of Invention
In order to solve the problems, the invention provides the jig frame structure for integrally prefabricating and hoisting the large pier body reinforcing steel bars, so that the integral prefabrication and hoisting of the large pier body reinforcing steel bars are realized, and the integral prefabrication and hoisting are more efficient, quicker and more convenient.
The technical scheme adopted by the invention for solving the technical problems is as follows: the jig frame for integrally prefabricating and hoisting the large pier body steel bars comprises a main frame consisting of square steel, wherein cross rods and a plurality of reinforcing rods are arranged on the front side surface, the rear side surface, the left side surface and the right side surface of the main frame respectively, the cross rods are arranged in the middle of the front side surface, the rear side surface, the left side surface and the right side surface of the main frame, and the reinforcing rods are arranged between the main frame and the cross rods and form a rhombus; the top and the bottom of the main frame are respectively provided with a plurality of steel clamping pieces, and a plurality of clamping grooves for clamping steel bars are uniformly arranged on each steel clamping piece at intervals.
Furthermore, a cross-shaped connecting rod is arranged in the middle of the top of the main frame, and a lifting hook is arranged in the center of the connecting rod.
The invention also discloses a pier body reinforcing steel bar construction method, which comprises the steps of transversely placing the main frame, fixing the semi-finished product of the pier body reinforcing steel bar on the steel clamping piece, binding and forming, lifting and hanging the jig frame by adopting a crane, lifting the pier body reinforcing steel bar by adopting the crane to the mounting position for positioning and mounting, and arranging a guy cable to ensure that the pier body reinforcing steel bar is firm and does not topple after the mounting is finished.
The invention has the beneficial effects that:
1. realizes the standardization and prefabrication of the large pier body steel bar construction.
2. Pier shaft reinforcement can construct with the cushion cap synchronization, shortens single pier construction cycle for the turnover speed of pier shaft platform support and template reduces the input cost.
3. Convert high altitude construction into ground operation, reduced the safety risk.
4. The construction difficulty is reduced, and the installation precision of the steel bars is guaranteed.
5. The jig frame is simple in structure, easy to manufacture and high in repeated utilization rate.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic bottom view of the present invention
Fig. 4 is a schematic top view of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 4, the jig frame for integrally prefabricating and hoisting the large pier body steel bar comprises a main frame 1 composed of square steel (the model is 20 × 20cm, and the wall thickness is 2cm), wherein a cross bar 2 (adopting 12# channel steel) and a plurality of reinforcing bars 3 (adopting 12# channel steel) are respectively arranged on the front side, the rear side, the left side and the right side of the main frame, the cross bar 2 is arranged in the middle of the front side, the rear side, the left side and the right side of the main frame 1, the lower half parts of the front side and the rear side of the main frame 1 are quadrilateral, the upper half parts of the front side and the rear side of the main frame 1 are trapezoidal, and the reinforcing bars 3 are arranged between the main frame 1; the top and the bottom of main frame 1 are equipped with a plurality of steel clamping pieces 4 respectively, each even interval arrangement has a plurality of draw-in grooves 41 that are used for cliping the reinforcing bar on the steel clamping piece 4, the middle part at the top of main frame 1 is equipped with the connecting rod 11 of "ten" shape, the central part of connecting rod 11 is equipped with lifting hook 12.
The invention also discloses a pier body reinforcing steel bar construction method, which comprises the steps of firstly transversely placing the main frame by utilizing the jig frame for integrally prefabricating and hoisting the large pier body reinforcing steel bar, then fixing the semi-finished product of the pier body reinforcing steel bar on the steel clamping piece, binding and forming, arranging 4 hoisting points (2 at the top and the bottom respectively) on the jig frame, hoisting by adopting 1 130T (top) crane and 1 50T (bottom) crane to erect the jig frame, then loosening the hook by adopting the 50T crane, hoisting the pier body reinforcing steel bar to the installation position by using the 130T crane to perform positioning installation, and arranging a cable rope after the installation to ensure that the pier body reinforcing steel bar is firm and does not topple.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made in the claims and the description of the present invention are within the scope of the present invention.
Claims (4)
1. The jig frame for integrally prefabricating and hoisting the large pier body steel bars is characterized by comprising a main frame, wherein a cross bar and a plurality of reinforcing bars are respectively arranged on the front side surface, the rear side surface, the left side surface and the right side surface of the main frame, the cross bar is arranged in the middle of the front side surface, the rear side surface, the left side surface and the right side surface of the main frame, and the reinforcing bars are arranged between the main frame and the cross bar and form a rhombus; the top and the bottom of the main frame are respectively provided with a plurality of steel clamping pieces, and a plurality of clamping grooves for clamping steel bars are uniformly arranged on each steel clamping piece at intervals.
2. The jig frame for integral prefabrication and hoisting of large pier shaft steel bars according to claim 1, wherein the main frame is composed of square steel.
3. The jig frame for integral prefabrication and hoisting of the large pier shaft steel bars according to claim 1, wherein a cross-shaped connecting rod is arranged in the middle of the top of the main frame, and a lifting hook is arranged in the center of the connecting rod.
4. A pier shaft steel bar construction method is characterized in that a jig frame for integral prefabrication and hoisting of large pier shaft steel bars according to any one of claims 1 to 4 is utilized, and the construction steps are as follows:
the method comprises the steps of transversely placing a main frame, fixing a semi-finished product of pier body steel bars on a steel clamping piece, binding and forming, lifting and hanging by a crane to enable a jig frame to be erected, hoisting the pier body steel bars by the crane to an installation position for positioning and installation, and arranging a guy rope after installation to ensure that the pier body steel bars are firm and do not topple over.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010723132.2A CN111877170A (en) | 2020-07-24 | 2020-07-24 | Jig frame for integral prefabrication and hoisting of large pier body reinforcing steel bars and pier body reinforcing steel bar construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010723132.2A CN111877170A (en) | 2020-07-24 | 2020-07-24 | Jig frame for integral prefabrication and hoisting of large pier body reinforcing steel bars and pier body reinforcing steel bar construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111877170A true CN111877170A (en) | 2020-11-03 |
Family
ID=73200495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010723132.2A Pending CN111877170A (en) | 2020-07-24 | 2020-07-24 | Jig frame for integral prefabrication and hoisting of large pier body reinforcing steel bars and pier body reinforcing steel bar construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111877170A (en) |
-
2020
- 2020-07-24 CN CN202010723132.2A patent/CN111877170A/en active Pending
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