CN109577203B - Column type pier pile extension steel bar bracket-free and construction method - Google Patents
Column type pier pile extension steel bar bracket-free and construction method Download PDFInfo
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- CN109577203B CN109577203B CN201811412699.7A CN201811412699A CN109577203B CN 109577203 B CN109577203 B CN 109577203B CN 201811412699 A CN201811412699 A CN 201811412699A CN 109577203 B CN109577203 B CN 109577203B
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- fixing
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- lath
- reinforcing
- pier
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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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- 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
Abstract
A column pier pile extension steel bar is provided with no support and a construction method. The product comprises the following components: pile head, pile head have the pile head reinforcing bar, the pile head reinforcing bar be located the pile head inside, the pile head reinforcing bar set up upright, the pile head on set up a set of reinforcement hoop ring, pile head reinforcing bar laminating pier shaft owner muscle, the pile head reinforcing bar with pier shaft owner muscle between fixed or the ligature is fixed through the mounting, reinforcement hoop muscle circle with pier shaft owner muscle between fixed or the ligature is fixed through the external fixation spare. The invention is used for the column type pier pile extension reinforcing steel bar without a support.
Description
The technical field is as follows:
the invention relates to a column type pier pile extension reinforcing steel bar bracket-free and a construction method.
Background art:
for the project of the lower part of the bridge without the bearing platform, in which the pier shaft is directly connected with the pile foundation, after pouring the cast-in-place pile foundation concrete and breaking the pile head, the connection construction of the pier shaft reinforcing steel bars and the pile foundation reinforcing steel bars is carried out. Under the condition that a crane is arranged, pier body steel bars can be preprocessed into a barrel-shaped framework and then hoisted and installed, and the method has the advantages that firstly, hoisting equipment is needed, secondly, the connection quality of the pier body steel bars and the pile body is not easy to control, and the standard requirements are difficult to achieve completely. Under the condition that does not have lifting device, generally will set up the scaffold frame ligature pier shaft reinforcing bar, will also remove partial support after the reinforcing bar is accomplished to installation pier shaft template. And then all the brackets are removed after the pier body or the bent cap is finished. This method requires the installation and removal of the support and is relatively long and expensive.
The invention content is as follows:
the invention aims to provide a column type pier pile extension reinforcing steel bar bracket-free and construction method which is simple in process and convenient to popularize.
The above purpose is realized by the following technical scheme:
the utility model provides a column type pier pile extension reinforcing bar does not have support, its constitution includes: pile head, pile head have the pile head reinforcing bar, the pile head reinforcing bar be located the pile head inside, the pile head reinforcing bar set up upright, the pile head on set up a set of reinforcement hoop ring, pile head reinforcing bar laminating pier shaft owner muscle, the pile head reinforcing bar with pier shaft owner muscle between fixed or the ligature is fixed through the mounting, reinforcement hoop muscle circle with pier shaft owner muscle between fixed or the ligature is fixed through the external fixation spare.
The column type pier pile extension reinforcing steel bar is free of a support, the fixing piece comprises an elastic split ring, one end of the elastic split ring is provided with a round hole, the other end of the elastic split ring is fixedly connected with an inserted bar, the pile head reinforcing steel bar and the pier body main reinforcing steel bar are sleeved by the elastic split ring, the inserted bar penetrates through the round hole, the inserted bar is provided with a thread section, the thread section is located on the round hole, the thread section is connected with a screwing nut, the left side of the screwing nut is provided with a left screwing fin, the right side of the nut is provided with a right screwing fin, and the left screwing fin and the right screwing fin are screwed to fasten the screwing nut.
The column type pier pile extension reinforcing bar does not have a support, the external fixation spare include the fixed plate, the fixed plate have upper left fixed lath, lower left fixed lath, upper right fixed lath, lower right fixed lath, the fixed plate the upper left fixed lath the lower left fixed lath the upper right fixed lath the lower right fixed lath structure as an organic whole, the upper left fixed lath with the lower right fixed lath cooperation use, the lower left fixed lath with the upper right fixed lath cooperation use.
The column type pier pile splicing steel bar bracket is free of a support, the upper left fixing batten is provided with an upper left fastening plate, the lower left fixing batten is provided with a lower left fastening plate, the upper right fixing batten is provided with an upper right fastening plate, the lower right fixing batten is provided with a lower right fastening plate, the upper left fastening plate and the lower right fastening plate are provided with upper fastening holes which are communicated, the upper fastening holes are connected with upper bolts, the upper right fastening plate and the lower left fastening plate are provided with lower fastening holes which are communicated, and the lower fastening holes are connected with lower bolts.
Column type pier pile extension reinforcing bar do not have a support, the reinforcement hoop muscle circle with pier shaft owner muscle cross setting, the reinforcement hoop muscle circle with the outside laminating fixed plate of pier shaft owner muscle, the reinforcement hoop muscle circle with pier shaft owner muscle have a crosspoint, fixed lath is walked around the upper portion left side of crosspoint on the upper left, fixed lath is walked around the lower part right side of crosspoint under the right side, fixed lath is walked around the upper portion right side of crosspoint on the upper right side, fixed lath is walked around the lower part left side of crosspoint under the left side, the mounting plate is mutually pasted and is passed through last bolt fastening under the left side and the right side, fixed lath passes under the right side the upper left fixed lath with the right side between the mounting plate, mounting plate and the mounting plate is mutually pasted and is passed through bolt fastening down under the left side.
The column type pier pile extension reinforcing steel bar has no support, the number of the reinforcing hoop reinforcement rings is 1-n, and each reinforcing hoop reinforcement ring is fixed with the pier body main reinforcement in a cross mode at different positions.
A construction method of column type pier pile extension reinforcing steel bar without a support comprises the following steps of (7), (1) chiseling a pile head, arranging the pile head reinforcing steel bar to be completely vertical, and stacking all reinforcing stirrups used by a pier body on the pile head reinforcing steel bar; (2) manually erecting the pier body main reinforcements, and connecting and fixing the pier body main reinforcements and the pile head main reinforcements in the reinforcing stirrup rings, (3) connecting all the pier body main reinforcements in the method; (4) lifting all the reinforcing hooping rings, enabling the bottommost reinforcing hooping ring to reach a designed position, and fixing the bottommost reinforcing hooping ring and the pier body main ribs firmly; (5) binding normal stirrups or fixing by using an external fixing piece; (6) taking the firmly fixed reinforcing hoop reinforcement ring and the pier body main reinforcement as supporting points, and carrying out the fixing construction of the hooping or the external fixing piece according to the steps; (7) and (5) carrying out next construction after inspection and acceptance until the construction of the reinforcement stirrup ring at the topmost end is finished.
Has the advantages that:
1. the invention overcomes the defects of the two methods in the prior art, does not need hoisting equipment or mounting and dismounting a scaffold, uses the rigidity of the steel bar, presets a reinforcing hoop reinforcement ring at the bottom, and then performs reverse pushing construction; the prefabricated reinforcement stirrup ring solves the problem of stirrup sleeving, the construction is reversely pushed from bottom to top to gradually increase the rigidity to solve the problem of a supporting platform, the scaffold is completely prevented from being put on and taken off or a crane is used, and the measure cost is saved.
2. The method is simple and convenient, adopts pure manual operation, does not need hoisting equipment, and saves mechanical cost.
3. The invention does not need to set up a scaffold, saves scaffold materials, reduces operation links and shortens construction period.
4. The invention has quick construction and plays a positive role in shortening the construction period; the technical requirements on the work type are low, and common steel bar workers can work; the quality of connection of pier shaft reinforcing steel bars and pile shaft reinforcing steel bars is improved.
5. The invention can be used for the construction of the bridge pier body reinforcing steel bars of which the bridge drilling piles are directly connected with the pier body; the construction method can also be used for the construction of medium and low pier body steel bars with the pier body height of less than 6 m; the method can be used for bridge construction sites without hoisting equipment on site.
6. The invention does not need large-scale equipment, and raw materials can be obtained from local sources; saves scaffolds, greatly shortens the construction period, has remarkable economic benefit and has wide application prospect.
7. The method effectively shortens the construction period, reduces the material consumption, does not use large equipment, reduces the carbon emission, has simple process, is convenient for local materials, is favorable for popularization, can conveniently finish the pier column reinforcing steel bar construction, can improve the engineering quality to a certain extent, and has remarkable social benefit.
Description of the drawings:
fig. 1 is a schematic structural diagram of the product.
Fig. 2 is a schematic view of the structure of the fixing member shown in fig. 1.
Fig. 3 is a schematic structural view of the outer fixing member of fig. 1.
FIG. 4 is a flow chart of the construction process of the product.
FIG. 5 is a schematic view of a simple construction method of the product of column pier pile extension reinforcing steel bar without a support.
The specific implementation mode is as follows:
example 1:
the utility model provides a column type pier pile extension reinforcing bar does not have support, its constitution includes: pile head 1, the pile head have pile head reinforcing bar 2, the pile head reinforcing bar be located the pile head inside, the pile head reinforcing bar set up upright, the pile head on set up a set of reinforcing hoop ring 3, pile head reinforcing bar laminating pier shaft owner muscle 4, the pile head reinforcing bar with pier shaft owner muscle between fixed through mounting 5, reinforcing hoop ring with pier shaft owner muscle between fixed through outer fixing piece 6.
The fixing piece can be used for fixing the pile head reinforcing steel bars and the pier body main reinforcing steel bars together (or adopting welding connection) simply and firmly, and the using effect is good.
The outer fixing piece can be used for fixing the pier body main ribs and the reinforcing hoop rib rings (or adopting welding connection) simply and firmly, is very safe to use, is convenient and fast to assemble, and is firm and stable after being assembled.
Example 2:
the column abutment pile extension reinforcement bracket of embodiment 1, the fixing member includes an elastic split ring 7, one end of the elastic split ring is provided with a circular hole 8, the other end of the elastic split ring is fixedly connected with an insertion rod 9, the elastic split ring sleeves the pile head reinforcement and the main pier body reinforcement, the insertion rod passes through the circular hole, the insertion rod has a threaded section, the threaded section is located above the circular hole, the threaded section is connected with a screwing nut 10, the left side of the screwing nut is provided with a left screwing fin 11, the right side of the nut is provided with a right screwing fin 12, and the screwing nut is fastened by screwing the left screwing fin and the right screwing fin.
When the screwing nut is screwed, the force can be applied due to the labor saving effect of the left screwing fin and the right screwing fin.
Example 3:
the column abutment pile extension reinforcing bar of embodiment 1 does not have a support, outer fixed member include fixed plate 13, the fixed plate have left upper fixed lath 14, left lower fixed lath 15, right upper fixed lath 16, right lower fixed lath 17, the fixed plate, left upper fixed lath, left lower fixed lath, right upper fixed lath, right lower fixed lath structure as an organic whole, left upper fixed lath with right lower fixed lath cooperation use, left lower fixed lath with right upper fixed lath cooperation use.
Example 4:
the non-bracket for a piling bar of a column abutment of embodiment 3, wherein the left upper fixing batten has a left upper fastening plate 18, the left lower fixing batten has a left lower fastening plate 19, the right upper fixing batten has a right upper fastening plate 20, the right lower fixing batten has a right lower fastening plate 21, the left upper fastening plate and the right lower fastening plate are provided with upper fastening holes 22 communicated with each other, the upper fastening holes are connected with upper bolts 23, the right upper fastening plate and the left lower fastening plate are provided with lower fastening holes 24 communicated with each other, and the lower fastening holes are connected with lower bolts 25.
Example 5:
embodiment 1 column type pier pile extension reinforcing bar does not have support, the reinforcement hoop muscle circle with pier shaft owner muscle cross arrangement, the reinforcement hoop muscle circle with the outside laminating fixed plate of pier shaft owner muscle, the reinforcement hoop muscle circle with pier shaft owner muscle have the crosspoint, the upper portion left side at crosspoint is walked around to upper left fixed lath, the lower part right side at crosspoint is walked around to fixed lath down in the right side, the upper portion right side at crosspoint is walked around to upper right fixed lath, the lower part left side at crosspoint is walked around to fixed lath down in the left side, upper left mounting plate and lower right mounting plate are pasted each other and are fixed through last bolt, lower right fixed lath pass upper left fixed lath with lower right mounting plate between, lower left mounting plate and upper right mounting plate paste each other and pass through bolt fastening down.
Example 6:
the column abutment pile extension reinforcing steel bar of embodiment 1 has no support, the reinforcing hoop reinforcement circle have 1-n, each reinforcing hoop reinforcement circle all with pier shaft owner muscle in the position cross fix of difference.
Example 7:
the utility model provides a column type pier pile extension reinforcing bar does not have support, its constitution includes: the pile head, the pile head have the pile head reinforcing bar, the pile head reinforcing bar be located the pile head inside, the pile head reinforcing bar set up upright, the pile head on set up a set of reinforcement hoop ring, pile head reinforcing bar laminating pier shaft owner muscle, the pile head reinforcing bar with pier shaft owner muscle between the ligature fixed, reinforcement hoop ring with pier shaft owner muscle between the ligature fixed.
Example 8:
a construction method of column type pier pile extension reinforcing steel bar without a support comprises the following steps of (7), (1) chiseling a pile head, arranging the pile head reinforcing steel bar to be completely vertical, and stacking all reinforcing stirrups used by a pier body on the pile head reinforcing steel bar; (2) manually erecting the pier body main reinforcements, and connecting and fixing the pier body main reinforcements and the pile head main reinforcements in the reinforcing stirrup rings, (3) connecting all the pier body main reinforcements in the method; (4) lifting all the reinforcing hooping rings, enabling the bottommost reinforcing hooping ring to reach a designed position, and fixing the bottommost reinforcing hooping ring and the pier body main ribs firmly; (5) binding normal stirrups or fixing by using an external fixing piece; (6) taking the firmly fixed reinforcing hoop reinforcement ring and the pier body main reinforcement as supporting points, and carrying out the fixing construction of the hooping or the external fixing piece according to the steps; (7) and (5) carrying out next construction after inspection and acceptance until the construction of the reinforcement stirrup ring at the topmost end is finished.
Example 9:
the method for constructing a pillar pier pile extension reinforcement without a support according to embodiment 8, wherein (1) a reinforcement with a large diameter has certain strength and rigidity, and when the height is not large, a single reinforcement is erected manually, and the bottom end of the reinforcement can be erected naturally without being bent over after being wrapped firmly.
(2) The diameter of the pier body steel bar is generally more than 22mm, the pier body steel bar has high rigidity, and one end of the pier body steel bar can be erected after being fixed below 6-7 mm.
(3) The general interval of pier shaft reinforcing bar sets up 1 great reinforcement stirrup of diameter about 2m, forms the cylinder frame after firmly connecting it with the main muscle, has certain intensity and rigidity, can regard as to support to go up further pier shaft reinforcing bar construction, avoids using other facilities such as scaffold frame or lifting device, saves the time limit for a project and cares the expense.
(4) And adopting a reverse pushing method for constructing by presetting a reinforcing hoop reinforcement ring at the bottom. All the reinforcement stirrup rings are preset, so that the problem of stirrup sleeving is solved, the rigidity is gradually increased during the reverse pushing construction from bottom to top, the problem of a supporting platform is solved, the scaffold is completely prevented from being put on and taken off, and the cost of measures is saved.
Example 10:
the construction method of the column abutment pile extension reinforcing steel bar without the bracket in the above embodiment,
preparation for construction
(1) After the pile foundation is poured, when the concrete strength reaches the specified requirement, the redundant pile head concrete is immediately broken, the pile foundation is checked and accepted, and the pile head reinforcing steel bars are arranged after the pile foundation is qualified.
Pile head reinforcing steel bars need to be arranged in order and straight, the whole position is not eccentric, and the top is sleeved with a reinforcing hoop ring and is firm.
(2) The main reinforcement of the pier body is processed, the bottom of the main reinforcement of the pier body is bent according to design so as to be connected with the pile top reinforcement, the reinforcing hoop reinforcement ring is made into a ring shape, the diameter is reasonable, and the joint is welded firmly. The common stirrup is processed and manufactured, and the joint is not connected so as to be sleeved with the pier body main reinforcement.
(3) A small springboard (supported on the reinforcement stirrup ring to serve as an upper stirrup construction platform) is prepared for upward construction.
(4) And (4) preparing for lapping and fixing the pier body main reinforcement and the pile head reinforcement.
(5) The training of manually erecting the main ribs of the single pier body is well done, whether the rigidity of the erected main ribs of the pier body is problematic or not is determined, and the method for ensuring the verticality of the main ribs of the pier body is determined.
(6) Reinforced hoop ring
In order to strengthen the integral rigidity of the pier body main reinforcement, the pier body main reinforcement is generally provided with a reinforcement stirrup in the design, and the reinforcement stirrup is a twisted steel bar with the diameter of more than 20mm and has higher strength and rigidity.
The manufactured reinforcement stirrup rings of all pier bodies are orderly stacked on the reinforcement stirrup ring at the top end of the pile head, which is a key link of the construction method and solves the problem of nesting the reinforcement stirrup rings. If the spacing between the reinforcing hooping rings is large, the subsequent manual sectioning operation is not facilitated, the reinforcing hooping rings can be properly increased, and the spacing between the strong hooping rings is reduced.
(7) Erecting pier body main reinforcement and connecting with pile top reinforcement
And (3) manually erecting the single manufactured pier body main rib, and firmly welding the inner side of the pier body main rib, which is positioned in the well-placed reinforcing hoop rib ring and the pile top, with the main rib of the drilled pile (namely spot welding). And connecting and fixing all pier body main reinforcements and the drilled pile reinforcements. If the bending of the bottom of the pier body main rib has deviation, proper adjustment is needed, and the pier body main rib is ensured to be vertically erected.
(8) Lifting and fixing the strong stirrup
After all pier body main ribs are connected and in a vertical state, lifting all the reinforcing hooping rings upwards; can go on step by step, until the reinforcing hoop muscle circle of the bottom reaches the design position, it is firm to fix (ligature) the reinforcing hoop muscle circle of the bottom and pier shaft owner muscle, reaches the degree that can use this to continue upwards to be under construction as the support. In the process, other reinforcing stirrup rings can be temporarily fixed for the convenience of operation.
(9) Binding of thin stirrup
And binding the thin stirrups between the sections firmly according to the designed intervals.
(10) Continuing the next section of construction until the next section of construction is completed
And (3) taking the first section of reinforcement stirrup ring which is well defined in China as a support, putting a small springboard on the first section of reinforcement stirrup ring as a platform, carrying out the next section of construction according to the steps (8) and (9) until the construction of the reinforcement stirrup ring at the topmost end is finished, and carrying out the next construction after inspection and acceptance.
The small springboard supported on the reinforcement stirrup can be made of a narrow and thick wood board or profile steel and the like and must be fixed firmly.
The material is steel bar, steel plate, elastic steel plate.
Quality control
(1) Quality control standard
Construction technical Specification for Highway bridges and culverts (JTGT F50-2011)
Standard of quality test for road engineering (JTG F-80/1-2012)
(2) Quality control in construction process
Firstly, the steel bar and the steel plate are inspected before use, and can be processed and manufactured after being qualified.
Secondly, bending the lower parts of the main pier body ribs according to the design size and the design angle, and accurately controlling the angle so that the main pier body ribs and the main cast-in-place pile ribs are in a vertical state after being connected. And the main reinforcement of the pier body and the main reinforcement of the cast-in-place pile must be firmly connected.
The main reinforcement of the pier body is not damaged by certain attention during the connection of the steel bars, so that the strength of the main reinforcement of the pier body is reduced; the binding of the thin stirrup is firmer than that of the construction by the common method;
and fourthly, paying attention to ensure the distance between the reinforcing stirrup ring and the fine stirrup.
Safety measures
(1) The method is carried out according to the requirements of the current standard of the industry of the people's republic of China, namely the technical code for road engineering construction safety and the road project safety evaluation guideline.
(2) A construction safety technical measure scheme is established according to the operation and strictly follows the execution.
(3) The safety helmet is worn by the construction site operator, and the safety belt is tied by the construction operator after the height of the safety helmet exceeds 2 m.
(4) People with hypertension and poor vision must not perform high-altitude operations and strictly comply with other regulations for high-altitude operations.
(5) The manual connection operation strictly complies with the operation rules, and the safety is ensured.
(6) The switch of the distribution box has operation indication and safety warning.
(7) The pier body main reinforcement must be fixed firmly with the bored concrete pile reinforcing bar, and the reinforcing hoop ring must be fixed firmly with pier body main reinforcement, guarantees to bear constructor and simple work platform's weight.
(8) The main pier body ribs are guaranteed to be vertical and avoid inclining, when the main pier body ribs are higher and the rigidity of the main pier body ribs is kept upright to be difficult, pull wires (wind cables) can be arranged, and stability of the reinforcement cage is guaranteed.
Environmental protection measure
(1) The laws and regulations for national environmental protection are seriously implemented.
(2) Reduce the emission of harmful and toxic gas and smoke dust.
(3) The production waste is piled to a specified position.
(4) The noise influence is controlled as much as possible during operation, and the equipment with excessive noise is not used or is used as little as possible. And measures such as protection and the like are adopted in construction, so that the noise is reduced to the minimum. When strong noise operation is carried out in a resident dense area, the operation time is strictly controlled, continuous operation (or night operation) is required under special conditions, noise reduction measures are taken as much as possible, and construction can be carried out after the work of surrounding people is done in advance.
(5) The construction process is careful about the saving of various materials and energy sources, and the waste is avoided.
(6) The construction method is simple in operation, a construction scaffold does not need to be erected or hoisting equipment does not need to be used, a large amount of materials for erecting the construction scaffold are saved, the use of equipment is reduced, and certain resources are saved in comparison.
The process principle is as follows:
(1) the steel bar with larger diameter has certain strength and rigidity, and under the condition that the height is not very large, a single steel bar is manually erected, and the bottom end of the steel bar can be naturally erected without bending down after being firmly wrapped by cement mortar.
(2) The diameter of the main ribs of the pier body is generally more than 22mm, the main ribs have higher rigidity, and one end of the main ribs can be erected after being fixed below 6-7 mm.
(3) The general interval 2m of pier shaft owner muscle sets up about 1 great reinforcing hoop muscle circle of diameter, forms the cylinder frame after firmly connecting reinforcing hoop muscle circle and pier shaft owner muscle, has certain intensity and rigidity, can regard as to support to go up further pier shaft owner muscle construction, avoids using other facilities such as scaffold frame or lifting device, saves the time limit for a project and cares the expense.
(4) Adopting a reverse pushing method for constructing by presetting a reinforcing hoop reinforcement ring at the bottom; all the reinforcement stirrup rings are preset, so that the problem of stirrup sleeving is solved, the rigidity is gradually increased during the reverse pushing construction from bottom to top, the problem of a supporting platform is solved, the scaffold is completely prevented from being put on and taken off, and the cost of measures is saved.
Claims (4)
1. The utility model provides a column type pier pile extension reinforcing bar does not have support, its constitution includes: pile head, characterized by: the pile head is provided with pile head reinforcing steel bars which are positioned in the pile head, the pile head reinforcing steel bars are vertically arranged, the pile head is provided with a group of reinforcing hooping rings, the pile head reinforcing steel bars are attached to main pier body reinforcing steel bars, the pile head reinforcing steel bars and the main pier body reinforcing steel bars are fixed or bound and fixed through fixing parts, each fixing part comprises an elastic split ring, one end of each elastic split ring is provided with a round hole, the other end of each elastic split ring is fixedly connected with an inserted bar, the elastic split rings sleeve the pile head reinforcing steel bars and the main pier body reinforcing steel bars, the inserted bars penetrate through the round holes, the inserted bars are provided with thread sections, the thread sections are positioned above the round holes, the thread sections are connected with screwing nuts, the left sides of the screwing nuts are provided with left screwing wings, and the right sides of the nuts are provided with right screwing wings, screwing the left screwing fin and the right screwing fin to fasten the screwing nut; the fixing piece connects and fixes the pile head reinforcing steel bar and the pier body main bar together, when the screwing nut is screwed, labor is saved due to the action of the left screwing wing and the right screwing wing, and the reinforcing hoop reinforcement ring and the pier body main bar are fixed or bound and fixed through the outer fixing piece; the outer fixing piece connects and fixes the pier body main rib and the reinforcing hoop rib ring together;
the outer fixing piece comprises a fixing plate, the fixing plate is provided with an upper left fixing lath, a lower left fixing lath, an upper right fixing lath and a lower right fixing lath, the fixing plate, the upper left fixing lath, the lower left fixing lath, the upper right fixing lath and the lower right fixing lath are of an integrated structure, the upper left fixing lath is matched with the lower right fixing lath for use, and the lower left fixing lath is matched with the upper right fixing lath for use; the left upper fixing lath is provided with a left upper fastening plate, the left lower fixing lath is provided with a left lower fastening plate, the right upper fixing lath is provided with a right upper fastening plate, the right lower fixing lath is provided with a right lower fastening plate, the left upper fastening plate and the right lower fastening plate are provided with communicated upper fastening holes, the upper fastening holes are connected with upper bolts, the right upper fastening plate and the left lower fastening plate are provided with communicated lower fastening holes, and the lower fastening holes are connected with lower bolts.
2. The spot pile extension bar of claim 1, wherein: strengthen the hoop muscle circle with pier shaft owner muscle cross setting, strengthen the hoop muscle circle with the outside laminating fixed plate of pier shaft owner muscle, strengthen the hoop muscle circle with pier shaft owner muscle have the intersect, the upper left side of intersect is walked around to upper left fixed lath, the lower part right side of intersect is walked around to lower right fixed lath, upper right fixed lath walk around the upper portion right side of intersect, the lower left side of intersect is walked around to lower left fixed lath, upper left mounting plate and lower right mounting plate are pasted each other and are passed through last bolt fastening, lower right fixed lath pass upper left fixed lath with lower right mounting plate between, lower left mounting plate and upper right mounting plate paste each other and pass through bolt fastening down.
3. The spot pile extension bar of claim 1, wherein: the number of the reinforcing hooping rings is 1-n, and each reinforcing hooping ring is fixed with the pier body main ribs in a crossed manner at different positions.
4. The method of constructing a post pier piling reinforcement without a bracket according to any one of claims 1 to 2, wherein: the construction method comprises the following steps of (7), (1) chiseling a pile head, arranging reinforcing steel bars of the pile head to enable the pile head to be completely vertically arranged, and stacking reinforcing stirrups used by all pier bodies on the pile head; (2) manually erecting the pier body main reinforcements, and connecting and fixing the pier body main reinforcements and the pile head main reinforcements in the reinforcing stirrup rings, (3) connecting all the pier body main reinforcements in the method; (4) lifting all the reinforcing hooping rings, enabling the bottommost reinforcing hooping ring to reach a designed position, and fixing the bottommost reinforcing hooping ring and the pier body main ribs firmly; (5) binding normal stirrups or fixing by using an external fixing piece; (6) taking the firmly fixed reinforcing hoop reinforcement ring and the pier body main reinforcement as supporting points, and carrying out the fixing construction of the hooping or the external fixing piece according to the steps (1), (2), (3), (4), (5) and (6); (7) and (5) carrying out next construction after inspection and acceptance until the construction of the reinforcement stirrup ring at the topmost end is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811412699.7A CN109577203B (en) | 2018-11-14 | 2018-11-14 | Column type pier pile extension steel bar bracket-free and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811412699.7A CN109577203B (en) | 2018-11-14 | 2018-11-14 | Column type pier pile extension steel bar bracket-free and construction method |
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| Publication Number | Publication Date |
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| CN109577203A CN109577203A (en) | 2019-04-05 |
| CN109577203B true CN109577203B (en) | 2020-09-01 |
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| CN109577203A (en) | 2019-04-05 |
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