Novel detachable assembly type prestressed pile cap

Abstract

The utility model relates to a novel detachable assembly type prestressed pile cap. The prestressed pile cap comprises two pile cap main bodies which are connected through at least one group of mortise and tenon joint structures, semicircular grooves are formed in the inner walls of the pile cap bodies, and a circular through hole is defined by the semicircular grooves in the two pile cap bodies. The mortise and tenon joint structure comprises a protruding concrete block and a reserved groove corresponding to the protruding concrete block. A prestressed tendon pipeline is arranged on the pile cap main body and penetrates through the middles of the convex concrete blocks and the reserved grooves of the same group of tenon-and-mortise structures; and prestressed tendons are arranged in the prestressed tendon pipelines. Structural connection is carried out in a prestressed tendon tensioning mode, the pile cap can be detached in the construction process, the problem that the pile cap is difficult to detach and maintain in cast-in-place construction is solved, the pile cap has the advantages of being convenient to manufacture, firm in connection, capable of being detached and combined and the like, and the structural quality of the pile cap is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of building construction, in particular to a novel detachable assembled prestressed pile cap. Background Art

[0002] Prefabricated and assembled structures have been widely used in the field of engineering construction due to their advantages such as high construction efficiency, easy quality assurance and small impact on the environment.

[0003] The pile cap is installed on the upper part of the pile of the composite foundation, serving as a transition structure between the upper pedestal and the lower pile. The pile cap not only improves the connection performance between the pile and the pedestal, but also significantly enhances the shear resistance of the pile foundation. Therefore, the quality of the pile cap construction directly affects the reliability of the pile foundation. In the existing pile cap construction process, the construction methods of tying steel bars, erecting formwork, and pouring on site are often used. When faced with large-scale pile group structures, the existing construction methods are time-consuming, inefficient, and have a great impact on the environment. In particular, for pile caps implemented using cast-in-place methods, the pile cap structure itself is prone to cracks. Moreover, since the cast-in-place pile cap cannot be disassembled, if problems are found during the construction of the pile cap, replacement and repair will be very difficult.

[0004] Therefore, it is necessary to realize an assembled prestressed pile cap that is easy to manufacture, has a firm connection, and can be disassembled during the construction phase. Utility Model Content

[0005] In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide a novel detachable assembled prestressed pile cap.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A novel detachable assembled prestressed pile cap comprises two pile cap bodies connected by at least one set of mortise and tenon structures; a semicircular groove is provided on the inner wall of the pile cap body, and the semicircular grooves on the two pile cap bodies form a circular through hole.

[0008] The mortise and tenon structure includes a raised concrete block and a reserved groove corresponding to the raised concrete block; wherein the raised concrete block is arranged on the inner wall of one pile cap body, and the reserved groove is arranged on the inner wall of the other pile cap body.

[0009] A prestressed tendon pipe is provided on the pile cap body, and the prestressed tendon pipe passes through the middle of the raised concrete block and the reserved groove of the same group of mortise and tenon structures; prestressed tendons are provided in the prestressed tendon pipe, and the prestressed tendons are used to tightly connect the two pile cap bodies by tensioning prestress.

[0010] Furthermore, a plurality of first reserved steel bars are provided on the top of the pile cap body.

[0011] Furthermore, a plurality of second reserved steel bars are provided on the outer peripheral side wall of the pile cap body.

[0012] Furthermore, the cross section of the raised concrete block is trapezoidal.

[0013] Furthermore, the end corners of the raised concrete blocks are wrapped with reinforcing angle steels.

[0014] Furthermore, the plurality of second reserved steel bars are respectively arranged on the front and rear sides of the pile cap body.

[0015] Furthermore, both ends of the prestressed tendons are provided with anchoring ends.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] The detachable prestressed assembled pile cap described in the present invention has all its components customized and processed in the factory before being transported to the construction site for construction, thereby realizing the assembly construction of the pile cap installation, greatly improving construction efficiency and reducing construction costs. The present invention adopts the method of prestressed tendon tensioning to connect the structure, and the pile cap can be disassembled during the construction process, avoiding the problems of cast-in-place construction disassembly and maintenance difficulties. The detachable prestressed assembled pile cap described in the present invention is easy to manufacture, has a reliable connection, and can be disassembled and assembled, which significantly improves the structural quality of the pile cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the new detachable assembled prestressed pile cap;

[0019] Figure 2 This is a schematic diagram of the elevation structure of the new detachable assembled prestressed pile cap;

[0020] Figure 3 This is a top view of a new type of detachable assembled prestressed pile cap;

[0021] Figure 4 It is a cross-sectional schematic diagram of a new type of detachable assembled prestressed pile cap.

[0022] in:

[0023] 1. First reserved steel bar, 2. Second reserved steel bar, 3. Raised concrete block, 4. Reserved groove, 5. Prestressed steel bar pipe, 6. Reinforced angle steel, 7. Anchor end. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] like Figures 1 to 4 A novel detachable, assembled prestressed pile cap is shown. The prestressed pile cap comprises two pile cap bodies connected by at least one set of mortise and tenon joints; the two pile cap bodies are connected by prestressed tension. The first reserved steel bars are arranged in a circle along the upper concrete portion of the pile cap; the pile cap bodies are constructed of concrete. Semicircular grooves are provided on the inner walls of the pile cap bodies, and the semicircular grooves on the two pile cap bodies form a circular through-hole. This novel detachable, assembled prestressed pile cap combines the advantages of mortise and tenon joints with prestressing technology, improving the connection strength and stability of the pile cap.

[0026] like Figure 1 and Figure 4 As shown, the mortise and tenon structure includes a raised concrete block 3 and a reserved groove 4 corresponding to the raised concrete block 3. The reserved groove 4 perfectly matches the size of the raised concrete block 3, forming the mortise and tenon structure. When connected, the raised concrete block and the reserved groove on the other side of the same mortise and tenon structure prevent misalignment of the pile cap structure, thereby increasing the structure's shear resistance. The raised concrete block 3 is located on the inner wall of one pile cap body, while the reserved groove 4 is located on the inner wall of the other pile cap body. A prestressed tendon conduit 5 is provided on the pile cap body, passing between the raised concrete block 3 and the reserved groove 4 of the same mortise and tenon structure. The conduit 5 passes through the center of the raised concrete block 3 and the center of the reserved groove 4 on the other pile cap body. The conduit 5 contains prestressed tendons, which are used to maintain a tight connection between the two pile cap bodies by applying prestress. The prestressed tendons are inserted into the conduit 5, and the prestressed tendons are applied to maintain a tight connection between the two pile cap bodies. The prestressed tendon pipe 5 passes through the left and right pile caps and is used to penetrate the prestressed tendons and perform tensioning. The tensioning prestress can significantly improve the connection strength and overall stability of the pile cap.

[0027] Furthermore, the cross section of the raised concrete block 3 is trapezoidal, with one end being small and the other end being large, which is convenient for docking and disassembly. Each end corner of the raised concrete block 3 is wrapped with a reinforcing angle steel 6 to avoid structural damage during docking and prestressing. In this embodiment, a total of four sets of mortise and tenon structures are provided, two sets of mortise and tenon structures are provided at the front end of the pile cap body, and two sets of mortise and tenon structures are provided at the rear end of the pile cap body. Figure 1 As shown in the figure, on the side wall of the pile cap body on the left, there is a reserved groove above the front end and a raised concrete block below, while on the side wall of the rear end there is a reserved groove above and a raised concrete block below. On the side wall of the pile cap body on the right, there is a raised concrete block above the front end and a reserved groove below, while on the side wall of the rear end there is a raised concrete block above and a reserved groove below.

[0028] like Figure 1 and Figure 2 As shown, a plurality of first reserved steel bars 1 are provided on the top of the pile cap body. The first reserved steel bars 1 are arranged in a circle along the upper part of the pile cap to increase the bearing capacity of the upper part of the pile cap. Figure 1 and Figure 3 As shown, several second reserved steel bars 2 are provided on the outer sidewalls of the pile cap body. These bars 2 are located on the front and rear sides of the pile cap body, with a row of them positioned in front and behind the pile cap to enhance the lateral stability of the pile cap. The presence of steel bars on the top and sides of the pile cap strengthens the integrity and load-bearing capacity of the pile cap, improving the safety of the structure.

[0029] The pile caps used in this embodiment are customized in the factory according to the size of the piles on the construction site, and then transported to the site for installation. The wrapped angle steels used are made of reinforced steel plates, and the angle steels are installed in the prefabrication stage. When the two parts of the pile cap are docked, the prestressed tendons are passed through the pile cap, and the two ends of the prestressed tendons are tensioned using a through-type jack. After the tensioning is completed, clip-type anchors are used for anchoring. Through the process of factory customization, on-site docking, tensioning prestress, and anchoring prestressed tendons, a new type of assembled construction of a detachable prestressed pile cap structure is completed.

[0030] The construction process of the new detachable assembled prestressed pile cap is as follows:

[0031] Step 1: According to the size of the pile at the construction site, a new type of detachable assembled prestressed pile cap of the same size is customized in the factory and delivered to the construction site.

[0032] Step 2: Install the pile cap according to the construction drawings; before tensioning the prestressed tendons, apply a layer of resin oil on the surface of the raised concrete 3.

[0033] Step 3: After aligning the raised concrete 3 with the reserved groove 4, pass the prestressed tendons through the reserved pipe 5.

[0034] Step 4: Tension the prestressed tendons at both ends. After the prestressed tendons are tensioned, grouting and anchoring are performed at the 5 locations of the prestressed tendon pipe openings at both ends of the pile cap.

[0035] Step 5: Casting of the foundation. The pile cap is cast into one piece with the foundation through the reserved steel bars 1 on the top and the reserved steel bars 2 on the side.

[0036] In summary, the present invention divides the pile cap into two parts, the shape of the pile cap is customized in the factory, and the two pile cap bodies are connected into one by tensioning prestressed tendons. A raised concrete block is set at the pile cap connection, and a corresponding reserved groove is set in the other part of the pile cap so that the concrete block and the groove fit perfectly. The four corners of the raised concrete block are wrapped with reinforced angle steel to avoid damage to the concrete structure during docking and tensioning. The prestressed tendons pass through the center of the raised concrete block and the groove and penetrate the entire pile cap. After the pile cap is installed according to the construction drawings, the prestressed tendons are tensioned at both ends. After the prestress reaches the predetermined value, the prestressed tendons are anchored at both ends of the pile cap. The present invention avoids the traditional process of traditional pile cap construction that requires tying steel bars and setting up formwork, greatly saving construction space and reducing construction materials. The pile and pile cap are connected by tensioning prestressed tendons, making the pile cap a detachable structure, which is convenient for maintenance and replacement during the construction of the pile cap, greatly improving construction efficiency. Its process is simple, saves materials, saves labor and effort, and greatly shortens the construction period.

[0037] The above-described embodiments are merely descriptions of preferred implementation methods of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A new type of detachable assembled prestressed pile cap, characterized in that: The prestressed pile cap comprises two pile cap bodies connected by at least one set of mortise and tenon structures; the inner walls of the pile cap bodies are provided with semicircular grooves, and the semicircular grooves on the two pile cap bodies form a circular through hole; The mortise and tenon structure comprises a raised concrete block (3) and a reserved groove (4) arranged corresponding to the raised concrete block (3); wherein the raised concrete block (3) is arranged on the inner wall of one of the pile cap bodies, and the reserved groove (4) is arranged on the inner wall of the other pile cap body; A prestressed tendon pipe (5) is provided on the pile cap body, and the prestressed tendon pipe (5) passes through the middle of the raised concrete block (3) and the reserved groove (4) of the same group of mortise and tenon structures; prestressed tendons are provided in the prestressed tendon pipe (5); the prestressed tendons are used to tightly connect the two pile cap bodies by tensioning prestress.

2. The novel detachable assembled prestressed pile cap according to claim 1 is characterized in that: A plurality of first reserved steel bars (1) are provided on the top of the pile cap body.

3. The novel detachable assembled prestressed pile cap according to claim 1 is characterized in that: A plurality of second reserved steel bars (2) are provided on the outer peripheral side wall of the pile cap body.

4. The novel detachable assembled prestressed pile cap according to claim 1 is characterized in that: The cross section of the raised concrete block (3) is trapezoidal.

5. The novel detachable assembled prestressed pile cap according to claim 1 is characterized in that: The end corners of the raised concrete block (3) are wrapped with reinforced angle steel (6).

6. The novel detachable assembled prestressed pile cap according to claim 3 is characterized in that: The plurality of second reserved steel bars (2) are respectively arranged on the front and rear sides of the pile cap body.

7. The novel detachable assembled prestressed pile cap according to claim 1 is characterized in that: Anchor ends (7) are provided at both ends of the prestressed tendons.

Images