Special-shaped carrier pile and construction method thereof

Abstract

The invention discloses a special-shaped carrier pile and a construction method thereof, the special-shaped carrier pile comprises an upper pile body, a lower pile body and a pile end carrier which are sequentially connected from top to bottom, and the pile diameter of the upper pile body is larger than that of the lower pile body; the large-diameter upper pile body is adopted at the upper part, and the normal-diameter lower pile body is adopted at the lower part, so that the purpose of reducing the construction cost is achieved under the condition that the requirement of horizontal load is met.

Description

Technical Field

[0001] The invention relates to the technical field of carrier pile construction, in particular to a special-shaped carrier pile and a construction method thereof. Background Art

[0002] At present, the main forces on pile foundations are vertical tension and pullout resistance, but some buildings also have high requirements for horizontal bearing capacity. Because the vertical bearing capacity of the carrier pile is large, the pile diameter is generally small. However, the bearing capacity of the diameter with small horizontal bearing capacity is small. If large-diameter pipe piles are used for the entire length, there will be waste.

[0003] When the horizontal load requirements are high, the pile diameter is the main controlling factor. If traditional carrier piles are used, larger diameter pipe piles are required to meet the horizontal load requirements. However, since the vertical bearing capacity of the carrier piles is very large, the use of large diameter pipe piles usually wastes materials.

[0004] In order to solve the above problems, the present invention provides a special-shaped carrier pile and a construction method thereof to solve the problem of high construction cost of the conventional carrier pile. Summary of the invention

[0005] The purpose of the present invention is to provide a special-shaped carrier pile and a construction method thereof, so as to achieve the purpose of reducing the construction cost while meeting the requirements of horizontal load.

[0006] To achieve the above object, the present invention provides the following solutions:

[0007] A special-shaped carrier pile comprises an upper pile body, a lower pile body and a pile end carrier which are sequentially connected from top to bottom, wherein the pile diameter of the upper pile body is larger than that of the lower pile body.

[0008] Preferably, the pile diameter of the upper pile body is 700 mm to 1000 mm, the diameter of the lower pile body is 500 mm to 700 mm, and the length of the upper pile body is 4 m to 8 m.

[0009] Preferably, the upper pile body and the lower pile body are prefabricated in one piece.

[0010] Preferably, a flange is provided on one end of the upper pile body connected to the lower pile body, and the lower pile body is connected to the upper pile body through the flange.

[0011] A construction method for a special-shaped carrier pile comprises the following steps:

[0012] The lower pile body is constructed by pile sinking method;

[0013] After the construction of the lower pile body is completed, the upper pile body is constructed and connected to the lower pile body;

[0014] Carry out pile end carrier construction.

[0015] Preferably, the construction method of the pile end carrier is as follows:

[0016] Filling filling material into the upper pile body and the lower pile body;

[0017] The filling material is rammed to below the bottom of the lower pile body and compacted with the soil below the bottom to form a pile end carrier with a cross-sectional size larger than the pile hole diameter.

[0018] Preferably, when the upper pile body and the lower pile body are connected by flanges, after the construction of the lower pile body is completed, a flange plate is installed on the lower pile body, and the upper pile body is welded and installed on the flange plate. After the construction is completed, the pile end carrier is constructed.

[0019] Preferably, after the construction of the lower pile body is completed, a prefabricated variable diameter interface is installed on the lower pile body to carry out the pile end carrier construction. After the construction of the pile end carrier is completed, the upper pile body is cast in situ to complete the construction of the special-shaped carrier pile.

[0020] Preferably, the lower pile body is constructed using a pile driver.

[0021] Preferably, the lower pile body is entered through a hanging formwork, and then the upper pile body is filled with poured concrete.

[0022] Compared with the prior art, the present invention has achieved the following technical effects:

[0023] 1. The present invention achieves the purpose of reducing construction costs while meeting the requirements of horizontal loads by adopting a large-diameter upper pile body at the upper part and a normal-diameter lower pile body at the lower part. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Attached Figure 1 It is a structural schematic diagram of the present invention;

[0026] Attached Figure 2 It is a structural schematic diagram of the upper pile body and the lower pile body connected by flanges according to the present invention;

[0027] Attached Figure 3 It is a structural schematic diagram of the cast-in-place construction of the upper pile body of the present invention;

[0028] 1. Upper pile body; 2. Lower pile body; 3. Pile end carrier; 4. Flange; 5. Variable diameter interface. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The purpose of the present invention is to provide a special-shaped carrier pile and a construction method thereof, so as to achieve the purpose of reducing the construction cost while meeting the requirements of horizontal load.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] refer to Figures 1 to 3 A special-shaped carrier pile comprises an upper pile body 1, a lower pile body 2 and a pile end carrier 3 which are connected in sequence from top to bottom, wherein the pile diameter of the upper pile body is greater than the pile diameter of the lower pile body; the present invention achieves the purpose of reducing construction costs while meeting the requirements of horizontal loads by adopting a large-diameter upper pile body and a normal-diameter lower pile body.

[0033] Furthermore, the pile diameter of the upper pile body is 700mm to 1000mm, the diameter of the lower pile body is 500mm to 700mm, the length of the upper pile body is 4m to 8m, and the length of the lower pile body is determined according to the engineering design.

[0034] Furthermore, the upper pile body and the lower pile body are prefabricated in one piece.

[0035] refer to Figure 2 A flange is provided on one end of the upper pile body connected to the lower pile body, and the lower pile body is connected to the upper pile body through the flange.

[0036] A construction method for a special-shaped carrier pile comprises the following steps: constructing a lower pile body by a pile sinking method; after the lower pile body is constructed, constructing an upper pile body and connecting it with the lower pile body; and constructing a pile end carrier.

[0037] Furthermore, the construction method of the pile end carrier is as follows: fill the upper pile body and the lower pile body with filling material; tamp the filling material to below the bottom of the lower pile body and compact it with the soil below the bottom to form a pile end carrier with a cross-sectional size larger than the pile hole diameter.

[0038] Furthermore, when the upper pile body and the lower pile body are connected by flanges, after the construction of the lower pile body is completed, the flange plate 4 is installed on the lower pile body, and the upper pile body is welded and installed on the flange plate. After the construction is completed, the pile end carrier construction is carried out. After the pile end carrier construction is completed, the construction of the special-shaped carrier pile is completed.

[0039] refer to Figure 3 After the construction of the lower pile body is completed, the prefabricated variable diameter interface 5 is installed on the lower pile body to carry out the pile end carrier construction. After the construction of the pile end carrier is completed, the upper pile body is cast in situ to complete the construction of the special-shaped carrier pile.

[0040] Furthermore, the lower pile body is constructed using a pile driver.

[0041] refer to Figure 3 , enter the lower pile body through the hanging formwork, and then fill and pour concrete in the upper pile body. The concrete in the upper pile body will enter part of the lower pile body, thereby realizing the reinforcement effect of anchoring and enhancing the stability of the connection between the upper and lower pile bodies.

[0042] Adaptive changes made according to actual needs are all within the protection scope of the present invention.

[0043] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A special-shaped carrier pile, characterized in that: The pile body comprises an upper pile body, a lower pile body and a pile end carrier which are sequentially connected from top to bottom, and the pile diameter of the upper pile body is larger than the pile diameter of the lower pile body.

2. A special-shaped carrier pile according to claim 1, characterized in that: The pile diameter of the upper pile body is 700mm to 1000mm, the diameter of the lower pile body is 500mm to 700mm, and the length of the upper pile body is 4m to 8m.

3. The special-shaped carrier pile according to claim 2, characterized in that: The upper pile body and the lower pile body are prefabricated in one piece.

4. The special-shaped carrier pile according to claim 2, characterized in that: A flange is provided on one end of the upper pile body connected to the lower pile body, and the lower pile body is connected to the upper pile body through the flange.

5. A construction method for special-shaped carrier piles, characterized in that: The following steps are involved: The lower pile body is constructed by pile sinking method; After the construction of the lower pile body is completed, the upper pile body is constructed and connected to the lower pile body; Carry out pile end carrier construction.

6. The construction method of a special-shaped carrier pile according to claim 5, characterized in that: The construction method of the pile end carrier is as follows: Filling filling material into the upper pile body and the lower pile body; The filling material is rammed to below the bottom of the lower pile body and compacted with the soil below the bottom to form a pile end carrier with a cross-sectional size larger than the pile hole diameter.

7. The construction method of a special-shaped carrier pile according to claim 5, characterized in that: When the upper pile body and the lower pile body are connected by flanges, after the construction of the lower pile body is completed, a flange plate is installed on the lower pile body, and the upper pile body is welded and installed on the flange plate. After the construction is completed, the pile end carrier is constructed.

8. The construction method of a special-shaped carrier pile according to claim 5, characterized in that: After the construction of the lower pile body is completed, a prefabricated variable diameter interface is installed on the lower pile body to carry out the pile end carrier construction. After the construction of the pile end carrier is completed, the upper pile body is cast in situ to complete the construction of the special-shaped carrier pile.

9. The construction method of a special-shaped carrier pile according to claim 8, characterized in that: The lower pile body is constructed by using a pile driver.

10. The construction method of a special-shaped carrier pile according to claim 8, characterized in that: Enter the lower pile body through the hanging formwork, and then fill and pour concrete into the upper pile body.

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