Prestressed or non-prestressed concrete semi-solid square pile

Abstract

The utility model discloses a prestressed or non-prestressed concrete semi-solid square pile which comprises a pile body, solid areas are arranged at the two ends of the pile body respectively, a cavity area is arranged in the middle of the pile body, and the pile body comprises a reinforcement cage and concrete poured inside and outside the reinforcement cage. The reinforcing cage comprises prestressed or non-prestressed reinforcing steel bars and spiral stirrups connected with the reinforcing steel bars, the reinforcing steel bars extend in the longitudinal direction, a cavity piece is arranged on the inner side of the cavity area, and the cavity piece is a pipeline with the two ends sealed or a moisture-proof high-strength deformation-resistant paper tube or a high-compression-resistance concrete stubble blocking air bag. The solid square pile is simple in structure, low in manufacturing cost, stable in quality, capable of being formed at a time, free of new and old concrete connection, high in economical efficiency, high in corrosion resistance and wide in geological adaptability, the strength of the whole pile body tends to be consistent, the size of the cavity can be accurately controlled, use requirements under different conditions are met, production hardware of a common solid square pile is considered in the manufacturing process, and production cost is reduced. The sociality and the popularization value are very high.

Description

TECHNICAL FIELD

[0001] The utility model relates to concrete square pile technical field, concretely relates to a prestressed or non prestressed concrete half solid square pile. BACKGROUND

[0002] The common square pile on the market has hollow square pile and solid square pile. The common manufacturing method of the existing hollow square pile is that after the hollow square pile is manufactured, the hollow square pile is inclined, the bottom is closed, and the concrete is poured below the pile body, and after waiting for solidification, the pile type that one end of the hollow square pile is blocked is achieved. But the hollow square pile manufactured by this method has the following disadvantages: 1. The new and old concrete connection, the whole pile body strength is inconsistent, the groundwater can enter the inner cavity, and the corrosion resistance is insufficient. 2. The pile head concrete is poured twice, the overall strength is inconsistent, the damage rate of the pile head is high in construction, and it is not easy to guarantee the pile quality. 3. The cavity inside the hollow square pile is not uniform, and the cavity size is not easy to accurately control. 4, the concrete forming process adopted is centrifugal process, and the production efficiency is low. At the same time, the authorized (announced) number CN 102966101 B discloses a prestressed concrete solid square pile and a manufacturing method thereof, mainly through prestressed steel bar main reinforcement cooperates with screw steel bar main reinforcement to manufacture a steel bar cage, to improve the overall structural strength of the square pile, but the manufacturing cost is high, the economy is not strong, and it is not conducive to batch promotion. Therefore, in order to avoid the shortcomings in the prior art, it is necessary to improve the prior art. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the shortcomings and deficiencies in the prior art, and provides a prestressed or non prestressed concrete half solid square pile with stable quality and low manufacturing cost.

[0004] The utility model is realized through the following technical schemes:

[0005] A prestressed or non prestressed concrete half solid square pile, including the pile body, the both ends of the pile body are equipped with solid area respectively, the middle of the pile body is equipped with cavity area, the pile body includes steel bar cage and the concrete that pours in the steel bar cage inside and outside, the steel bar cage includes prestressed or non prestressed steel bar and spiral hoop that connects with the steel bar, the steel bar extends along the longitudinal direction, the inside of the cavity area is equipped with a cavity piece, the cavity piece is equipped at the inside of the steel bar cage.

[0006] Further, the cross section of the cavity piece is square or circular.

[0007] Further, the steel bars are connected with steel hooks, the steel hooks are connected with the hoop bands, the hoop bands are connected with the cavity members, the steel hooks are in two groups, the steel hooks at the two ends of the cavity area are in four groups, the cross section angle of the hoop bands connected by the adjacent two groups of the steel hooks is close to 90 degrees, and the distance between the hoop bands connected by each group of the steel hooks is not more than 2 meters.

[0008] Further, the two ends of the pile body are provided with pile sleeves, the two ends of the steel bars are provided with sleeves, the two ends of the pile body are provided with steel mesh sheets, and hooks are arranged at the connecting positions between the solid area and the cavity area of the pile body.

[0009] Further, the cavity area of the pile body is provided with a drainage port.

[0010] Further, the cavity member is a pipe with both ends sealed, a moisture-proof high-strength anti-deformation paper tube or a high-pressure-resistant concrete stubble gas bag.

[0011] Further, the steel bars are arranged in a square shape.

[0012] Compared with the prior art, the both ends of the pile body are respectively provided with solid areas, the middle of the pile body is provided with a cavity area, the inner side of the cavity area is provided with a cavity member, and the cavity member is arranged on the inner side of the steel cage, so that the square pile has the advantages of simple structure, low manufacturing cost, stable quality and the following beneficial effects:

[0013] 1. The semi-solid square pile can be formed at one time, the new and old concrete is not connected, the strength of the whole pile body tends to be consistent, the size of the cavity can be accurately controlled, the advantages of the solid square pile and the non-solid square pile are combined, the economic efficiency is high, the corrosion resistance is high, and the geological adaptability is wide.

[0014] 2. The size of the cavity of the semi-solid square pile can be selected to meet the use requirements under different conditions.

[0015] 3. The manufacturing process considers the production hardware of the general solid square pile, and has strong sociality and popularization value. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating any creative labor.

[0017] Figure 1 It is a structural schematic view of the semi-solid square pile of the prestressed or non-prestressed concrete of the present application.

[0018] Figure 2 It is Figure 1A-A cross section structure schematic diagram of the hollow member when the cross section is circular;

[0019] Figure 3 A-A cross section structure schematic diagram of the hollow member when the cross section is circular; Figure 1 A-A cross section structure schematic diagram of the hollow member when the cross section is circular;

[0020] Figure 4 A-A cross section structure schematic diagram of the hollow member when the cross section is circular; Figure 1 A-A cross section structure schematic diagram of the hollow member when the cross section is circular;

[0021] Figure 5 A-A cross section structure schematic diagram of the hollow member when the cross section is circular;

[0022] In the figure: 1-pile body; 2-solid area; 3-cavity area; 4-steel bar; 5-helical stirrup; 6-hollow member; 7-pile sleeve hoop; 8-sleeve; 9-steel mesh; 10-upper hoop belt; 11-lower hoop belt; 12-hook; 13-drainage port. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] As Figures 1 to 5 indicated in the figure, the prestressed or non-prestressed concrete semi-solid square pile of the present application comprises a pile body 1, both ends of the pile body 1 are respectively provided with a solid area 2, the middle of the pile body 1 is provided with a cavity area 3, the pile body 1 comprises a steel cage and concrete cast in the steel cage, the steel cage comprises prestressed or non-prestressed steel bars 4 and helical stirrups 5 connected with the steel bars 4, the steel bars 4 extend along the longitudinal direction, the inner side of the cavity area 3 is provided with a hollow member 6, and the hollow member 6 is arranged on the inner side of the steel cage. By arranging the solid area 2 at both ends of the pile body 1, the cavity area 3 in the middle of the pile body 1, and the hollow member 6 on the inner side of the cavity area 3, the hollow member 6 is arranged on the inner side of the steel cage, so that the structure of the square pile is simple, the manufacturing cost is low, the quality is stable, and the following advantages are achieved.

[0025] Beneficial effects:

[0026] 1. The hollow member can be formed at one time, there is no connection between new and old concrete, the strength of the whole pile body tends to be consistent, the size of the cavity can be accurately controlled, the advantages of the solid square pile and the non-solid square pile are combined, the economic efficiency is high, the corrosion resistance is high, and the geological adaptability is wide.

[0027] 2. The size of the cavity of the semi-solid square pile can be selected to meet the use requirements under different conditions.

[0028] 3. The production process takes into account the production hardware of general solid square piles, and has strong sociality and popularization value.

[0029] In specific implementation, the cross section of the cavity member 6 is square or circular, which facilitates the pouring of concrete and makes the structure of the square pile more stable.

[0030] The steel hooks are connected with the steel hooks, the steel hooks are connected with the steel hooks, the steel hooks are connected with the steel hooks, and the steel hooks are connected with the steel hooks. The cross section angle of the two adjacent groups of steel hooks connected with the steel hooks is close to 90 degrees, forming the upper and lower hoop bands 10 and 11. The distance between the hoop bands connected by each group of steel hooks is not more than 2 meters, so that the hoop bands are stable and cost-saving.

[0031] The two ends of the pile body 1 are provided with pile sleeves 7, which can prevent the pile head from being hit transversely. The two ends of the steel bar 4 are provided with sleeves 8. When the steel bar 4 is a prestressed steel bar, the sleeves 8 are connected, which facilitates the connection of the tensioning device and the pre-tensioning of the steel bar according to the tensile strength of the square pile product.

[0032] The two ends of the pile body 1 are provided with steel mesh 9, which improves the structural strength of the two ends of the square pile.

[0033] The hook 12 is arranged at the connection between the solid area 2 and the cavity area 3 of the pile body 1, which facilitates the hoisting of the pile.

[0034] The cavity area 3 of the pile body 1 is provided with a drainage port 13. Steam curing will be used in the production process, and part of the water will accumulate in the cavity. When the pile is removed from the mold, the water can be discharged from the drainage port 13. The drainage port 13 is suitable for the construction process of the pile using a hammering machine. The hammering will cause a certain deformation of the pile body, which will increase the air pressure in the cavity. The drainage port 13 can ensure the stability of the air pressure in the cavity. The closure of the drainage port 13 is implemented in the construction. When the drainage port 13 is close to the ground, the efficient and fast setting filling material can be filled to close it.

[0035] In specific implementation, the cavity member 6 is a pipe with both ends sealed or a moisture-proof high-strength anti-deformation paper tube or a high-pressure-resistant concrete gas bag.

[0036] The steel bars 4 are arranged in a square shape, which improves the structural stability and stress balance of the square pile support.

[0037] A method for manufacturing prestressed or non-prestressed concrete semi-solid square piles, comprising the following steps,

[0038] Step 1: material preparation, according to the size of the square pile to be processed, prestressed or non-prestressed steel bar, spiral hoop, cavity member, pile sleeve, steel mesh, sleeve;

[0039] Step two: adopt rolling welding machine to prepare the reinforcement cage by rolling welding method; place the cavity piece in the prepared reinforcement cage, connect the high anti-deformation hoop with appropriate number of steel hooks according to the weight of the cavity piece to fix the cavity piece in the middle position of the reinforcement cage;

[0040] Step three: prepare the mold and coat the mold with release agent, such as preparing prestressed square pile, install the reinforcement cage prepared in step two on the mold and tighten the tension device, pre-tension the reinforcement according to the tensile grade requirement of the solid square pile product, lock and anchor after reaching the requirement:

[0041] Step four: prepare high-performance concrete and pour it into the mold and perform concrete vibration;

[0042] Step five: adopt natural curing or steam curing: when the concrete strength reaches 70% of the standard strength, such as preparing prestressed square pile, release the prestressed reinforcement anchoring and demold to obtain the semi-solid square pile product.

[0043] The semi-solid square pile prepared by the preparation method has the following advantages:

[0044] 1. The appearance of the pile is similar to that of the conventional solid square pile, so that groundwater cannot easily enter the inner cavity, effectively ensuring the corrosion resistance. 2. The pile head is similar to the solid square pile, that is, the full-section pile and the pile head concrete is poured once, and the strength is consistent, which can greatly reduce the damage rate of the pile head and ensure the pile quality. 3. The formation of the cavity mainly relies on the material that can be placed inside the square pile to ensure the stable existence of the cavity before the pouring of the concrete, which has low production cost and stable structure. 4. The production is carried out by using the mold for producing solid square pile, and the concrete molding process is vibration process rather than centrifugal process, which has high production efficiency and good production quality.

[0045] In step two, the cavity piece is a pipe with sealed ends or a moisture-proof high-strength anti-deformation paper tube or a high-pressure concrete blocking air bag.

[0046] In step two, the steel hooks should be hung on the steel reinforcement of the reinforcement cage, and two hooks form a group. The steel hooks at both ends of the cavity area form a group of four, and the cross-sectional angle of the hoop connected by the adjacent two groups of steel hooks is close to 90 degrees. The distance between the hoops connected by each group of steel hooks does not exceed 2 meters.

[0047] The semi-solid square pile has a uniform cavity inside, and the cavity length is generally consistent with the non-encryption area of the reinforcement, and the length can be adjusted appropriately according to the design. The inner cavity diameter or shape of the semi-solid square pile with the same side length varies according to the semi-solid square pile model, and the cavity shape is circular or rectangular with the same side length. The thickness of the concrete on the inside of the reinforcement should not be less than the thickness of the concrete on the outside of the reinforcement.

[0048] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A prestressed or non-prestressed concrete semi-solid square pile, characterized in that: The pile body is provided with solid sections at both ends, and a cavity section in the middle, and comprises a reinforcement cage and concrete cast in the reinforcement cage, the reinforcement cage comprises prestressed or non-prestressed steel bars and spiral stirrups connected with the steel bars, the steel bars extend in the longitudinal direction, the inner side of the cavity section is provided with a cavity member, and the cavity member is arranged on the inner side of the reinforcement cage.

2. A prestressed or non-prestressed concrete semi-solid square pile according to claim 1, characterized in that: The cross section of the cavity member is square or circular.

3. The pre-stressed or non-pre-stressed concrete semi-solid square pile according to claim 1, characterized in that: The steel hooks are connected with the stirrups, the stirrups are connected with the cavity member, the steel hooks are in two groups, the steel hooks at both ends of the cavity section are in four groups, the cross section angle of the stirrups connected with the steel hooks of the adjacent two groups is close to 90 degrees, and the distance between the stirrups connected with the steel hooks of each group is not more than 2 meters.

4. The pre-stressed or non-pre-stressed concrete semi-solid square pile according to claim 1, characterized in that: The pile body is provided with pile sleeve hoops at both ends, the steel bars are provided with sleeves at both ends, the pile body is provided with steel mesh sheets at both ends, and the solid sections of the pile body are provided with hooks at the connection positions with the cavity sections.

5. The pre-stressed or non-pre-stressed concrete semi-solid square pile according to claim 1, characterized in that: The cavity section of the pile body is provided with a drainage port.

6. The pre-stressed or non-pre-stressed concrete semi-solid square pile according to claim 1, characterized in that: The cavity member is a pipe with both ends sealed, a moisture-proof high-strength anti-deformation paper tube or a high-pressure-resistant concrete gas barrier bag.

7. The pre-stressed or non-pre-stressed concrete semi-solid square pile according to claim 1, characterized in that: The steel bars are arranged in a square shape.

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