Prefabricated pipe wall mechanism of manual hole digging pile

Abstract

The utility model relates to a prefabricated pipe wall mechanism of a manual hole digging pile. Concave rabbets are annularly formed in the upper end faces of the prefabricated concrete pipe walls, convex rabbets correspondingly matched with the concave rabbets are annularly formed in the lower end faces of the prefabricated concrete pipe walls, the end faces of the two sections of prefabricated concrete pipe walls are directly and correspondingly connected through the concave rabbets and the convex rabbets, and reserved mounting grooves are formed in the two ends of the outer walls of the prefabricated concrete pipe walls; reserved hole channels are formed between the reserved mounting grooves and the corresponding rabbets, ports of the reserved hole channels between the opposite faces of the two sections of prefabricated concrete pipe walls correspond to each other, a bent bolt is inserted into the reserved hole channel communicating between the two corresponding reserved mounting grooves, and the two ends of the bent bolt are located in the reserved mounting grooves and are in threaded connection with fastening nuts. And filling materials are filled in the reserved mounting grooves. Deviation or inclination of the pile body caused by deformation of the hole wall can be avoided, erosion and damage of underground water or other external factors to the pile body are prevented, and the service life of the pile body is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of pile foundation construction, and in particular to a prefabricated pipe wall structure for manually bored piles. Background Art

[0002] Precast support walls for bored piles are widely used in various construction projects, such as high-rise buildings, bridges, and tunnels. They are suitable for a variety of geological conditions, particularly in areas with high groundwater levels and poor soil quality, where they are particularly effective in stabilizing the pile bore and preventing collapse. In areas with diverse geological formations and widely varying soil mechanical properties, precast support walls for bored piles can effectively increase the bearing capacity and stability of the foundation. During foundation construction in these locations, precast support walls can prevent borehole wall collapse, ensuring construction safety and progress. In areas with steep slopes and prone to landslides, precast support walls for bored piles can reinforce the soil and prevent collapse. The precast support wall structure increases slope stability and reduces the risk of natural disasters such as landslides. For foundation projects with insufficient bearing capacity or requiring reinforcement, precast support walls for bored piles can effectively increase bearing capacity and improve structural stability. The retaining wall is tightly integrated with the pile shaft, sharing the load and thus enhancing the overall bearing capacity of the foundation.

[0003] To sum up, prefabricated support pipe wall of bored piles is an important measure in the construction of bored piles. It has strict technical requirements and standardized construction process. It can not only ensure construction quality and safety, improve construction efficiency, and protect the environment, but also bring significant economic benefits.

[0004] However, during the construction process, the precast concrete retaining wall is connected by multiple sections. After the connection, the pipe wall is easily deviated or tilted due to the deformation of the hole wall, and the verticality and accuracy of the pile body are difficult to guarantee. In addition, groundwater will penetrate through the joints of the precast concrete retaining wall, eroding and damaging the pile body, shortening the service life of the pile body. Utility Model Content

[0005] In order to solve or partially solve the problems existing in the related technology, the present application provides a prefabricated pipe wall mechanism for bored piles, which can effectively support the hole wall and prevent it from collapsing due to loose soil or external force, thereby ensuring the safety of construction workers and the smooth progress of construction. It can also avoid deviation or tilt of the pile body due to deformation of the hole wall, prevent groundwater or other external factors from eroding and damaging the pile body, and extend the service life of the pile body.

[0006] The present application provides a prefabricated pipe wall structure for bored piles, comprising a precast concrete pipe wall 1; a concave tongue-and-groove 3 is provided in an annular manner on the upper end face of the precast concrete pipe wall 1, and a convex tongue-and-groove 2 is provided in an annular manner on the lower end face corresponding to the concave tongue-and-groove 3; the end faces of the two sections of the precast concrete pipe wall 1 are directly connected correspondingly through the concave tongue-and-groove 3 and the convex tongue-and-groove 2; reserved installation grooves 4 are provided at both ends of the outer wall of the precast concrete pipe wall 1; a reserved channel 5 is provided between the reserved installation groove 4 and the corresponding tongue-and-groove; the ends of the reserved channels 5 between the opposite surfaces of the two sections of the precast concrete pipe wall 1 correspond to each other, and a bent bolt 6 is inserted in the reserved channel 5 communicating between the corresponding two reserved installation grooves 4; both ends of the bent bolt 6 are located in the reserved installation groove 4 and are threadedly connected with a fastening nut 8; the reserved installation groove 4 is filled with filling material 9.

[0007] Optionally, in some solutions, both ends of the bent bolt 6 are sleeved with fixing steel plates 7 , and the fixing steel plates 7 are located between the wall of the reserved installation groove 4 and the fastening nut 8 .

[0008] Optionally, in some schemes, the precast concrete pipe wall 1 is a tubular structure formed by connecting four arc-shaped pipe segments of the same size, and the connection structure between the arc-shaped pipe segments is the same as the connection structure between the end faces of the precast concrete pipe wall 1. The difference is that the convex tongue-and-groove 2 and the concave tongue-and-groove 3 opened on the connecting surface of the arc-shaped pipe segment are straight structures arranged along the axial direction of the connecting surface of the arc-shaped pipe segment.

[0009] Optionally, in some solutions, a waterproof rubber ring 10 is provided between the connecting surfaces of the convex tongue-and-groove 2 and the concave tongue-and-groove 3 .

[0010] The technical solution provided by this application may have the following beneficial effects:

[0011] The present application provides a precast concrete pipe wall support technology for manually excavated bored piles. The technology has a simple structure and uses precast concrete retaining walls to reduce safety risks during the construction of manually excavated bored piles and ensure the safety of workers. The precast concrete retaining walls can be manufactured in advance and then assembled and installed on the construction site, thereby greatly shortening the construction period. At the same time, the precast concrete retaining walls can adapt to various geological conditions, including different types of soil such as soft soil, sandy soil, and rock. In areas with high groundwater levels, the retaining walls can also effectively prevent groundwater erosion, ensuring the stability and safety of the bored piles.

[0012] This application can effectively support the hole wall and prevent it from collapsing due to loose soil or external force, thereby ensuring the safety of construction workers and the smooth progress of construction. It can also avoid deviation or tilt of the pile body due to deformation of the hole wall, prevent groundwater or other external factors from eroding and damaging the pile body, and extend the service life of the pile body.

[0013] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0015] Figure 1 Schematic diagram of the end structure of the prefabricated pipe wall mechanism of the bored pile shown in the embodiment of the present application;

[0016] Figure 2 Schematic diagram of the connection structure of the prefabricated pipe wall mechanism of the bored pile shown in the embodiment of the present application;

[0017] Figure 3 It is a schematic diagram of the arrangement structure of the waterproof rubber ring shown in an embodiment of the present application.

[0018] Reference numerals:

[0019] In the figure, 1-precast concrete pipe wall; 2-convex tongue and groove; 3-concave tongue and groove; 4-reserved installation groove; 5-reserved channel; 6-bent bolt; 7-fixing steel plate; 8-fastening nut; 9-filling material; 10-waterproof rubber ring. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although the accompanying drawings illustrate embodiments of the present application, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0021] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0022] Unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0023] In response to the above problems, an embodiment of the present application provides a prefabricated pipe wall mechanism for bored piles, which can effectively support the hole wall and prevent it from collapsing due to loose soil or external force, thereby ensuring the safety of construction workers and the smooth progress of construction. It can also avoid deviation or tilt of the pile body due to deformation of the hole wall, prevent erosion and damage to the pile body by groundwater or other external factors, and extend the service life of the pile body.

[0024] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0025] See also Figures 1-2 The prefabricated pipe wall mechanism of the artificial bored pile includes a precast concrete pipe wall 1; the upper end surface of the precast concrete pipe wall 1 is provided with a concave tongue-and-groove 3 in an annular manner, and the lower end surface is provided with a convex tongue-and-groove 2 corresponding to the concave tongue-and-groove 3 in an annular manner. The end faces of the two sections of the precast concrete pipe wall 1 are directly connected correspondingly through the concave tongue-and-groove 3 and the convex tongue-and-groove 2. Reserved installation grooves 4 are provided at both ends of the outer wall of the precast concrete pipe wall 1. A reserved channel 5 is provided between the reserved installation grooves 4 and the corresponding tongue-and-groove. The ports of the reserved channels 5 between the opposite surfaces of the two sections of the precast concrete pipe wall 1 correspond to each other, and a bent bolt 6 is inserted in the reserved channel 5 communicating between the corresponding two reserved installation grooves 4. The two ends of the bent bolt 6 are in the reserved installation grooves 4 and are threadedly connected with a fastening nut 8. The reserved installation groove 4 is filled with filling material 9.

[0026] During operation, the precast concrete pipe wall 1 is arranged in sections, and the length of each section can be 1 meter or 1.5 meters. Holes are evenly reserved around the pipe within 20 centimeters above the lower end of the two lowest sections of the precast concrete pipe wall 1. During the excavation process, the caisson construction method is mainly used, with section excavation, section sinking, and section heightening until the bottom of the pile. Measures are also taken to control the settlement of the well wall. Locking anchor rods are driven into the reserved holes of the two lowest sections of the precast concrete pipe wall 1 to stabilize the settlement of the pipe wall. The precast concrete pipe wall 1 is prefabricated in advance without waiting for the concrete to reach the strength, thus saving construction time.

[0027] The concave tongue-and-groove 3, the convex tongue-and-groove 2, the reserved installation groove 4, the reserved channel 5 and the hoisting grouting hole are all reserved in advance during the prefabrication process of the road panel, and the hoisting grouting hole is a two-hole design of hoisting hole and grouting hole. After the hoisting construction is completed, it is also used as a grouting hole. The precast concrete pipe wall 1 is spliced ​​in sequence according to the principle of inserting the convex tongue-and-groove 2 into the concave tongue-and-groove 3, and then connected and fixed by the bent bolt 6, and the bent bolt 6 passes through the reserved channel 5 from the reserved installation groove 4, and the fastening nuts 8 at both ends are tightened and fixed. After the installation is completed, the reserved installation groove 4 is sealed tightly with filling material 9.

[0028] The gap between the precast concrete pipe wall 1 and the lower base layer can be firmly bonded by grouting through the hoisting grouting hole, the plate joints between the precast concrete pipe walls 1 are sealed by grouting, and the upper surface plate joints are sealed with sealant. The connection of the precast concrete pipe wall 1 is fixed, and the adjacent precast concrete road panels are connected and fixed in sequence with bent bolts 6, and the positioning line is checked to prevent the installation cumulative error from being too large. The installation error is adjusted in time by adjusting the tightness of the fastening nut 8.

[0029] In some solutions, both ends of the bent bolt 6 are sleeved with fixing steel plates 7 , and the fixing steel plates 7 are located between the wall of the reserved installation groove 4 and the fastening nut 8 .

[0030] During operation, the fixing steel plate 7 fits against the wall of the reserved installation groove 4 to reduce the wear between the fastening nut 8 and the wall of the reserved installation groove 4, making the connection between the fastening nut 8 and the bent bolt 6 more stable.

[0031] In some protocols, see Figure 3 The precast concrete pipe wall 1 is a tubular structure formed by connecting four arc-shaped pipe segments of the same size, and the connection structure between the arc-shaped pipe segments is the same as the connection structure between the end faces of the precast concrete pipe wall 1. The difference is that the convex tongue-and-groove 2 and the concave tongue-and-groove 3 opened on the connecting surface of the arc-shaped pipe segment are straight structures arranged along the axial direction of the connecting surface of the arc-shaped pipe segment.

[0032] During operation, the curved segments are connected to form the prefabricated concrete pipe wall 1, which makes the production and lifting of the curved segments more convenient.

[0033] In some solutions, a waterproof rubber ring 10 is fitted between the connecting surfaces of the convex tongue-and-groove 2 and the concave tongue-and-groove 3 .

[0034] During operation, the arrangement of the waterproof rubber ring 10 can further prevent the penetration of groundwater.

[0035] Finally, it should be noted that, in this document, relational terms such as first and second, and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Ranges can be expressed herein with "from" and "to" statements of the form "from about a to about b", and include the end points of the ranges. Moreover, the terms including, including but not limited to or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] The foregoing description of various embodiments of the present application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It was described above, and then described in the description prior to the claims, that the term "comprising", including its variants, such as "comprise", "comprises" or "comprised of", is intended to cover a non-exclusive inclusion. Thus, a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "consisting of" is intended to cover only those elements listed. The term "consisting essentially of" is intended to cover only those elements as modified by "essentially", in that additional elements will not change the basic and novel characteristics of the described embodiments. The foregoing description, for the purposes of explanation, has been presented consistent with the attachment of forms to embodiments that are possible. There can be many alternate arrangements and methodologies employed in carrying out various embodiments.

Claims

1. A prefabricated pipe wall structure for manually bored piles, characterized by: The prefabricated pipe wall mechanism of the artificial bored pile comprises a prefabricated concrete pipe wall (1); the upper end surface of the prefabricated concrete pipe wall (1) is provided with a concave tongue-and-groove (3) in an annular manner, and the lower end surface is provided with a convex tongue-and-groove (2) corresponding to the concave tongue-and-groove (3); the end surfaces of the two sections of the prefabricated concrete pipe wall (1) are directly connected through the concave tongue-and-groove (3) and the convex tongue-and-groove (2); both ends of the outer wall of the prefabricated concrete pipe wall (1) are provided with a reserved installation groove (4); a reserved channel (5) is provided between the reserved installation groove (4) and the corresponding tongue-and-groove; the ends of the reserved channel (5) between the opposite surfaces of the two sections of the prefabricated concrete pipe wall (1) correspond to each other, and a bent bolt (6) is inserted into the reserved channel (5) communicating between the corresponding two reserved installation grooves (4); both ends of the bent bolt (6) are located in the reserved installation groove (4) and are threadedly connected with a fastening nut (8); and the reserved installation groove (4) is filled with filling material (9).

2. The prefabricated pipe wall structure of the bored pile according to claim 1, characterized in that: Both ends of the bent bolt (6) are sleeved with fixing steel plates (7), and the fixing steel plates (7) are located between the wall surface of the reserved installation groove (4) and the fastening nut (8).

3. The prefabricated pipe wall structure of the bored pile according to claim 2, characterized in that: The precast concrete pipe wall (1) is a tubular structure formed by connecting four arc-shaped pipe segments of the same size, and the connection structure between the arc-shaped pipe segments is the same as the connection structure between the end faces of the precast concrete pipe wall (1). The difference is that the convex tongue-and-groove (2) and the concave tongue-and-groove (3) provided on the connection surface of the arc-shaped pipe segment are straight structures arranged along the axial direction of the connection surface of the arc-shaped pipe segment.

4. The prefabricated pipe wall structure of a bored pile according to claim 1, 2 or 3, characterized in that: A waterproof rubber ring (10) is fitted between the connecting surfaces of the convex tongue-and-groove (2) and the concave tongue-and-groove (3).

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