Prestressed pipe pile with quickly detachable pile head

Abstract

The prestressed pipe pile comprises an upper pipe pile section and a lower pipe pile section, at least two connecting grooves are formed in the top end of the lower pipe pile section, and connectors are arranged at the bottom end of the upper pipe pile section, inserted into the connecting grooves and rotationally clamped to limit the upper pipe pile section to be separated from the lower pipe pile section in the axial direction of the upper pipe pile section. The number of the connectors arranged at the bottom of the upper-section pipe pile is in one-to-one correspondence with that of the connecting grooves. The detachable upper-section pipe pile and the lower-section pipe pile serving as a permanent-structure pipe pile are connected through a simple buckle structure, the upper-section pipe pile and the lower-section pipe pile can be rapidly mounted and dismounted by rotating the upper-section pipe pile relative to the lower-section pipe pile, the joint of the upper-section pipe pile and the lower-section pipe pile is located underground, and after the pipe piles are sunk in place, the upper-section pipe pile and the lower-section pipe pile can be rapidly mounted and dismounted. The upper section of the pipe pile is removed, the top of the pipe pile does not need to be broken along with excavation of the foundation pit, disturbance to the pipe pile in the excavation process of the foundation pit is reduced, the situation that the pipe pile deflects or is broken is reduced, the construction quality of the pipe pile is improved, and the construction progress is accelerated.

Description

Technical Field

[0001] The present application relates to the field of gold main construction technology, and in particular to a prestressed pipe pile with a quickly detachable pile head. Background Art

[0002] Prestressed concrete pipe piles are usually used as the building foundation for building projects with underground floors. The prestressed pipe piles are sunk into place before the foundation pit is excavated. The sinking process is static pressure or hammering. After the piles are in place, the top of the pile is generally about 0-4m from the ground. The top of the pipe pile is generally about 4-12m away from the design elevation, and the excess part of the top needs to be broken. The length is about 4-12m, or even more, and the length is determined by the height of the underground part of the building.

[0003] The top of the pipe pile is usually broken gradually as the foundation pit is excavated layer by layer. For example, if the building is located in a soft muddy soil foundation, the muddy soil below is soft and weak. During the foundation pit excavation process, the gravity of the construction machinery is converted into a horizontal thrust on the soil layer and transmitted to the constructed pipe piles, causing the pipe piles to deflect and become dignified. If the deflection of the pipe piles exceeds the requirements of the specifications, they need to be corrected; if the broken pile part is below the set elevation, the pipe piles need to be connected; both the correction and connection of the pipe piles are complex construction procedures, which delays the construction period. Utility Model Content

[0004] The purpose of the present application is to provide a prestressed pipe pile with a quickly detachable pile head, which has the feature of being able to quickly remove the top pipe pile. The top of the permanent structure pipe pile is located underground, and there is no need to break the top of the pipe pile as the foundation pit is excavated, thereby reducing the disturbance caused by the foundation pit excavation and ensuring the construction quality of the pipe pile.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A prestressed pipe pile with a quickly detachable pile head comprises an upper pipe pile and a lower pipe pile, wherein the top of the lower pipe pile is provided with at least two connection grooves, and the bottom of the upper pipe pile is provided with a joint which is inserted into the connection groove and is rotatably engaged to limit the upper pipe pile from being separated from the lower pipe pile along its axial direction, and the number of joints provided at the bottom of the upper pipe pile corresponds one to one to the connection grooves.

[0007] It is further provided that: a clamping block is provided at the outer edge of the connecting groove close to the lower pipe pile, and a clamping groove for a connector inserted into the connecting groove to be screwed in and clamped is formed between the clamping block and the bottom surface of the connecting groove.

[0008] It is further configured that the connecting groove also includes an insertion groove and a rotation groove which are vertically connected to each other, the insertion groove extends from the outer edge of the lower pipe pile toward the center of the lower pipe pile, and the end of the rotation groove is connected to the end of the insertion groove close to the center of the lower pipe pile.

[0009] It is further configured that the joint includes an insert block and a connecting block connected in a "┖"-shaped structure, the insert block is inserted through the insertion groove and rotatably engaged in the slot below the block, and the block is engaged in the matching groove formed by the insert block, the connecting block and the upper section pipe pile of the joint.

[0010] It is further configured that the thickness of the insert block is adapted to the height of the card slot along the vertical direction.

[0011] It is further arranged that the length of the clamping block along the outer edge of the lower pipe pile is greater than the width of the inserting block.

[0012] It is further provided that: the top of the lower section pipe pile is evenly provided with four connection grooves along its circumference, and the bottom of the upper section pipe pile is provided with four joints corresponding to the four connection grooves.

[0013] Compared with the prior art, the solution of this application has the following advantages:

[0014] 1. In the prestressed pipe pile with a quickly detachable pile head involved in the present application, a simple buckle structure is used to connect the detachable upper pipe pile and the lower pipe pile as a permanent structural pipe pile. The upper pipe pile can be rotated relative to the lower pipe pile to achieve rapid installation and removal of the two. The structure is simple and the operation is convenient.

[0015] 2. In the prestressed pipe piles with quickly removable pile heads involved in the present application, the connection between the upper section of the pipe pile and the lower section of the pipe pile is located underground. After the pipe piles are sunk into place, the upper section of the pipe piles is removed, and the lower section of the pipe piles, which are permanent structures, are completely located underground. The top of the pipe pile does not need to be broken during the excavation of the foundation pit, thereby reducing the disturbance to the pipe piles caused by the excavation of the foundation pit, reducing the deflection or breakage of the pipe piles, improving the construction quality of the pipe piles, and accelerating the construction progress.

[0016] 3. In the prestressed pipe pile with a quickly detachable pile head involved in the present application, the upper section of the pipe pile can be reused multiple times, thereby reducing construction costs.

[0017] Additional aspects and advantages of the present application will be partially given in the following description, which will become apparent from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0019] Figure 1 A schematic diagram of the connection between an upper section of a prestressed pipe pile and a lower section of a pipe pile in an embodiment of the present application;

[0020] Figure 2A schematic diagram of the separation of an upper section of a prestressed pipe pile and a lower section of a pipe pile in an embodiment of the present application with a quickly detachable pile head;

[0021] Figure 3 This is a schematic diagram of the top surface of the lower section of a prestressed pipe pile in an embodiment of the present application with a quickly detachable pile head.

[0022] In the figure, 1, upper section of pipe pile; 2, lower section of pipe pile; 3, joint; 31, plug block; 32, connecting block; 4, connecting groove; 41, clamping block; 42, clamping groove; 43, insertion groove; 44, rotation groove. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as limiting the present application.

[0024] The embodiments of the present application are described below in conjunction with the drawings in the present application. It should be understood that the implementation methods described below in conjunction with the drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0025] Those skilled in the art will appreciate that, unless specifically stated, the "said" and "the" used herein may also include plural forms. It should be further understood that the term "including" used in the specification of the present application refers to the presence of the features, integers, elements and / or components, but does not exclude the implementation of other features, elements, components and / or their combinations supported by the technical field. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0026] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the referred device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0028] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0029] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0030] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0031] Regarding the current complicated construction process of pipe pile correction and pile connection, please refer to Figures 1 to 3 The present application provides a prestressed pipe pile with a quickly detachable pile head, which includes an upper pipe pile section 1 and a lower pipe pile section 2 connected in a vertical direction, and a connection structure of a simple snap-on joint 3 is adopted between the upper pipe pile section 1 and the lower pipe pile section 2, so that the upper pipe pile section 1 can be removed when the joint 3 of the upper and lower pipe pile sections is located underground after the pipe piles are all sunk.

[0032] Specifically, at least two connection grooves 4 are provided on the top of the lower pipe pile 2, and a joint 3 is provided at the bottom of the upper pipe pile 1 that can be inserted into the connection groove 4 and engaged with the connection groove 4 by rotation. The upper pipe pile 1 is restricted from being separated from the lower pipe pile 2 along its circumferential axis by engaging the joint 3 with the connection groove 4, thereby realizing the quick connection between the upper pipe pile 1 and the lower pipe pile 2. The lower pipe pile 2 is sunk into the underground design position as a permanent structural pipe pile; the upper pipe pile 1 is a removable part, which does not need to transmit the axial force, bending moment, shear force and other forces of the pipe pile in the later stage, and only transmits static pressure or hammer pressure to the lower pipe pile 2 in the stage of pile sinking. After the pipe pile is sunk into place, the upper pipe pile 1 can be quickly removed, which can reduce the horizontal disturbance of the pipe pile in the later foundation pit excavation process, thereby ensuring the construction quality of the pipe pile.

[0033] The number of joints 3 provided at the bottom of the upper pipe pile 1 corresponds to the number of connection grooves 4 provided at the top of the lower pipe pile 2. The upper pipe pile 1 and the lower pipe pile 2 have the same outer diameter, and the joints 3 are provided at the circumferential edge of the bottom surface of the upper pipe pile 1, and the connection grooves 4 are also provided at the circumferential edge of the top surface of the lower pipe pile 2. A clamping block 41 is provided at the outer edge of the connection groove 4 near the lower pipe pile 2, and a clamping groove 42 for the joints 3 to be screwed in and clamped is formed between the clamping block 41 and the bottom surface of the connection groove 4. The connection groove 4 also includes an insertion groove 43 and a rotation groove 44 that are vertically connected to each other. The insertion groove 43 extends from the outer edge of the lower pipe pile 2 toward the center of the lower pipe pile 2, and the end of the rotation groove 44 is connected to the end of the insertion groove 43 near the center of the lower pipe pile 2. The joint 3 includes an insert block 31 and a connecting block 32 connected in a “┖”-shaped structure. The thickness of the insert block 31 matches the height of the clamping groove 42 in the vertical direction. At the same time, the distance between the insert block 31 and the bottom surface of the upper pipe pile 1 is greater than the thickness of the clamping block 41. The length of the clamping block 41 along the outer edge of the lower pipe pile 2 is greater than the width of the insert block 31. The insert block 31 is inserted into the connecting groove 4 through the insertion groove 43. The upper pipe pile 1 is rotated to rotate the insert block 31 into the clamping groove 42 below the clamping block 41. At the same time, the clamping block 41 can be clamped in the matching groove formed by the insert block 31, the connecting block 32 and the bottom surface of the upper pipe pile of the joint 3.

[0034] In this embodiment, the thickness of the plug block 31 is smaller than the height of the slot 42 in the vertical direction by 3-6 mm, and the distance between the plug block 31 and the bottom surface of the upper pipe pile 1 is larger than the thickness of the block 41 by 3-6 mm. This facilitates the plug block 31 to be screwed into the slot 42, and the block 41 can also relatively enter the matching groove formed by the plug block 31 of the joint 3, the connecting block 32 and the bottom surface of the upper pipe pile, thereby realizing the snap-fitting of the joint 3 and the connecting groove 4.

[0035] In addition, in this embodiment, four connection grooves 4 and four clamping blocks 41 are respectively provided corresponding to the lower pipe pile 2 and the upper pipe pile 1, and the four connection grooves 4 are evenly distributed around the top surface of the lower pipe pile 2, and the four joints 3 are evenly distributed around the bottom surface of the upper pipe pile 1. The clamping blocks 41 in the four connection grooves 4 extend in a straight direction, so that when the upper pipe pile 1 rotates, the inserting blocks 31 of the four joints 3 can be synchronously screwed into the clamping grooves 42 of the connection grooves 4, which is simple to operate, convenient to connect, and has high stability in the connection of multiple joints 3.

[0036] In summary, the prestressed pipe pile with a quickly detachable pile head of the present application uses a simple snap-on structure to connect the detachable upper pipe pile 1 and the lower pipe pile 2 as a permanent structure pipe pile. The rapid installation and removal of the two can be achieved by rotating the upper pipe pile 1 relative to the lower pipe pile 2. During construction, the connection between the upper pipe pile 1 and the lower pipe pile 2 is located underground. After the pipe pile is sunk into place, the upper pipe pile 1 can be rotated relative to the lower pipe pile 2 to release the lock between the joint 3 and the connecting groove 4, and the upper pipe pile 1 can be completely pulled out to complete the construction of the pipe pile. At this time, the pipe pile as a permanent structure is completely located underground, and the top of the pipe pile does not need to be broken with the excavation of the foundation pit, thereby reducing the disturbance to the pipe pile caused by the excavation process of the foundation pit, reducing the deflection or breakage of the pipe pile, improving the construction quality of the pipe pile, and accelerating the construction progress.

[0037] The above description is only a partial implementation method of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A prestressed pipe pile with a quickly detachable pile head, characterized in that: The top of the lower pipe pile is provided with at least two connecting grooves, and the bottom of the upper pipe pile is provided with a joint that is inserted into the connecting groove and rotated to limit the upper pipe pile from axially separating from the lower pipe pile. The number of joints arranged at the bottom of the upper pipe pile corresponds to the connecting groove. A clamping block is provided at the outer edge of the connecting groove near the lower pipe pile, and a clamping groove is formed between the clamping block and the bottom surface of the connecting groove for the joint inserted in the connecting groove to be screwed into and clamped. The connecting groove also includes an insertion groove and a rotation groove that are vertically connected to each other, and the insertion groove extends from the outer edge of the lower pipe pile toward the center of the lower pipe pile, and the end of the rotation groove is connected with the end of the insertion groove near the center of the lower pipe pile. The joint includes an insertion block and a connecting block connected in a "┖"-shaped structure, and the insertion block is inserted into and rotatably clamped in the clamping groove below the clamping block through the insertion groove, and the clamping block is clamped in a matching groove formed by the insertion block, the connecting block and the upper pipe pile of the joint.

2. The prestressed pipe pile with a quickly detachable pile head according to claim 1 is characterized in that: The thickness of the insert block matches the height of the slot in the vertical direction.

3. The prestressed pipe pile with a quickly detachable pile head according to claim 1 is characterized in that: The length of the clamping block along the outer edge of the lower pipe pile is greater than the width of the inserting block.

4. The prestressed pipe pile with a quickly detachable pile head according to claim 1 is characterized in that: The top of the lower pipe pile is evenly distributed with four connection grooves along its circumference, and the bottom of the upper pipe pile is provided with four joints corresponding to the four connection grooves.

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