Pipe pile connecting structure

Abstract

The utility model relates to a pipe pile connecting structure which comprises an upper pile section and a lower pile section, an upper end plate and a lower end plate are fixedly arranged on the adjacent end faces of the upper pile section and the lower pile section respectively, and the upper end plate and the lower end plate abut against each other. A plurality of upper slots which are circumferentially arranged at intervals are formed in the side surface of the lower end of the upper end plate; a plurality of lower slots which are in one-to-one correspondence with the upper slots are formed in the side surface of the upper end of the lower end plate; any upper slot is communicated with the corresponding lower slot to form a connecting slot of which the upper end and the lower end of the cross section are wide and the middle is narrow; compared with the problems that in the prior art, two prefabricated pipe piles are connected in a welded mode, operation time is long, the prefabricated pipe piles are prone to being affected by the construction environment, and construction efficiency is low, the upper-section pile and the lower-section pile can be connected, connection operation is simple and rapid, and construction efficiency is high. And the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe pile construction, in particular to a pipe pile connection structure. Background Art

[0002] Pipe pile construction is involved in public and civil construction, highway and railway projects. In order to ensure that the length of the pile foundation meets the standard, it is often necessary to connect the piles. The two prefabricated pipe piles to be connected are the upper section pile and the lower section pile. In the prior art, the two are usually welded together at the construction site. The welding connection operation takes a long time, and the construction environment temperature is low or it is not suitable for construction in windy and rainy environments, resulting in low construction efficiency; at the same time, for piles with high bearing capacity requirements, large diameters, and pull-out requirements, the quality of the welded piles cannot be well guaranteed. When the bottom of the pile meets the bedrock, a large reaction force will be generated. If traditional welding is used to connect the piles, if the joint welding quality is poor, eccentric bending moments are easily generated, causing the piles to break. Utility Model Content

[0003] The utility model aims to provide a pipe pile connection structure to solve the problem that the welding connection of two prefabricated pipe piles in the prior art takes a long time and is easily affected by the construction environment, resulting in low construction efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A pipe pile connection structure comprises an upper section pile and a lower section pile, wherein an upper end plate and a lower end plate are fixedly provided on adjacent end surfaces of the two, and the upper end plate and the lower end plate are abutted against each other; a plurality of upper slots arranged at circumferential intervals are provided on the lower end side surface of the upper end plate, and a plurality of lower slots corresponding to the upper slots are provided on the upper end side surface of the lower end plate; any upper slot is connected with the corresponding lower slot to form a connection slot with a cross section that is wide at the upper and lower ends and narrow in the middle; a connection block matching the shape of the connection slot is inserted into any connection slot.

[0006] In the utility model adopting the above-mentioned technical scheme, the upper end plate, the lower end plate and the connecting block can be processed in advance, and the upper end plate and the lower end plate can be pre-fixed on the upper section pile and the lower section pile respectively. During on-site construction, it is only necessary to align the upper end plate and the lower end plate, and then insert the connecting block into the connecting groove to achieve pile connection. The operation is simple and fast. Compared with the welding connection of two prefabricated pipe piles in the prior art, the operation time is long and it is easily affected by the construction environment, resulting in low construction efficiency. The utility model can not only realize the connection between the upper section pile and the lower section pile, but also the connection operation is simple and fast, thereby improving the construction efficiency.

[0007] Furthermore, the upper section pile and the lower section pile are both circular tube piles, the upper end plate and the lower end plate are both annular, and the inner and outer diameters of the upper section pile, the lower section pile, the upper end plate and the lower end plate are all equal; with this arrangement, the connection between the upper section pile and the lower section pile has a coherent structure, and the upper section pile and the lower section pile have good integrity after being connected.

[0008] Furthermore, the cross section of the connecting groove is symmetrical about the upper and lower axes, and symmetrical about the left and right axes; with this arrangement, the cross section of the connecting block is also symmetrical about the upper and lower axes, and symmetrical about the left and right axes, which is easier to manufacture, and when installing the connecting block, it is easy to insert into the connecting groove, which is more convenient.

[0009] Furthermore, the cross-section of the upper slot is an isosceles trapezoid that is wide at the top and narrow at the bottom, and the cross-section of the lower slot is an isosceles trapezoid that is narrow at the top and wide at the bottom, so that the cross-section of the connecting slot is an hourglass shape; with this arrangement, the cross-section of the connecting block is an hourglass shape, the structure is simple, and it is easy to manufacture. At the same time, the force resistance between the connecting block and the upper end plate and the lower end plate is good, and it is not easy to be damaged by stress concentration.

[0010] Furthermore, the length directions of several of the connecting grooves are radial, and several of the connecting grooves are evenly arranged in the circumferential direction; with such an arrangement, when the pipe pile is tensile, the force between the connecting block and the upper end plate and the lower end plate is evenly distributed in the circumferential direction, thereby avoiding damage to the connecting structure due to uneven force.

[0011] Furthermore, grooves are provided on the lower edge of the upper end plate and the upper edge of the lower end plate; for pipe piles with higher quality requirements, after the upper and lower pile sections are connected by connecting blocks, welding can be performed along the grooves of the upper and lower end plates to further increase the connection strength.

[0012] Furthermore, positioning holes are provided on the upper end plate and the lower end plate, and the positioning holes can cooperate with positioning pins so that the positions of the upper slots and the lower slots correspond one by one; the positioning holes cooperate with the positioning pins to facilitate the rapid docking and positioning of the upper end plate and the lower end plate, thereby improving construction efficiency.

[0013] Compared with the prior art, the beneficial effects of the utility model are: not only can the connection between the upper section pile and the lower section pile be realized, but the connection operation is simple and fast, thereby improving the construction efficiency; moreover, the connection structure can firmly connect the upper section pile and the lower section pile, the connection strength is high, and the connected pile has a high pull-out bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a partial schematic diagram of the connection structure;

[0015] Figure 2 It is the front view of the connection block;

[0016] Figure 3 It is the right view of the connection block;

[0017] Figure 4 This is a top view of the lower end plate.

[0018] Markings in the figure: 1-upper section pile, 2-lower section pile, 3-upper end plate, 4-lower end plate, 5-connecting groove, 6-connecting block, 7-positioning hole. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings.

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] A pipe pile connection structure, such as Figure 1-Figure 4 As shown, it comprises an upper section pile 1 and a lower section pile 2, and an upper end plate 3 and a lower end plate 4 are fixedly arranged on the adjacent end surfaces of the two, and the upper end plate 3 and the lower end plate 4 are abutted against each other; a plurality of upper slots arranged circumferentially at intervals are arranged on the lower end side surface of the upper end plate 3, and a plurality of lower slots corresponding to the upper slots are arranged on the upper end side surface of the lower end plate 4; any upper slot is connected with the corresponding lower slot to form a connecting groove 5 with a cross section that is wide at both ends and narrow in the middle; a connecting block 6 matching the shape of the connecting groove 5 is inserted into any connecting groove 5; the upper section pile 1 and the lower section pile 2 are both precast concrete pipe piles, and the upper end plate 3 and the lower end plate 4 are metal plates; the connection method between the upper section pile 1 and the upper end plate 3, and between the lower section pile 2 and the lower end plate 4 is not limited, as long as they can be fixedly connected;

[0022] The upper section pile 1 and the lower section pile 2 are both circular tube piles, the upper end plate 3 and the lower end plate 4 are both annular, and the inner and outer diameters of the upper section pile 1, the lower section pile 2, the upper end plate 3 and the lower end plate 4 are all equal;

[0023] The cross section of the connecting groove 5 is symmetrical about the vertical axis and the horizontal axis;

[0024] The cross section of the upper slot is an isosceles trapezoid that is wide at the top and narrow at the bottom, and the cross section of the lower slot is an isosceles trapezoid that is narrow at the top and wide at the bottom, so that the cross section of the connecting slot 5 is an hourglass shape; the cross section of the connecting block 6 is also an hourglass shape;

[0025] The length directions of the plurality of connection grooves 5 are all along the radial direction, and the plurality of connection grooves 5 are evenly arranged along the circumferential direction;

[0026] The lower edge of the upper end plate 3 and the upper edge of the lower end plate 4 are both provided with grooves;

[0027] The upper end plate 3 and the lower end plate 4 are both provided with positioning holes 7, and the positioning holes 7 can cooperate with the positioning pins so that the positions of the upper slots and the lower slots correspond one to another.

[0028] The upper end plate 3, the lower end plate 4 and the connection block 6 are processed centrally in the pipe pile factory, and the upper end plate 3 and the lower end plate 4 are respectively fixed in advance on the pile heads of the upper section pile 1 and the lower section pile 2. During on-site construction, the lower section pile 2 is pressed in, the upper section pile 1 is hoisted into place, and the upper section pile 1 and the lower section pile 2 are aligned by inserting the positioning pin into the positioning hole 7. The upper end plate 3 and the lower end plate 4 are tightly fitted horizontally, and the positions of the upper slot and the lower slot correspond one by one. Then, the connection block 6 is inserted into the connection groove 5 along the periphery of the end plate in sequence, and a hand hammer is used to assist during construction. After the mechanical connection is completed, for pipe piles with higher connection strength requirements, two-protection gas welding is used to weld along the grooves of the upper and lower end plates.

[0029] Compared with the prior art in which two prefabricated pipe piles are welded together and connected, which takes a long time and is easily affected by the construction environment, resulting in low construction efficiency, the utility model adopts the above-mentioned technical solution. The utility model can not only realize the connection between the upper section pile and the lower section pile, but also the connection operation is simple and fast, thereby improving the construction efficiency. At the same time, the connection structure can firmly connect the upper section pile and the lower section pile, the connection strength is high, and the piles after connection have high pull-out bearing capacity.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe pile connection structure, comprising an upper pile section (1) and a lower pile section (2), characterized in that: An upper end plate (3) and a lower end plate (4) are fixedly provided on the adjacent end surfaces of the two, and the upper end plate (3) and the lower end plate (4) are in contact with each other; a plurality of upper slots arranged at intervals in the circumferential direction are provided on the lower end side surface of the upper end plate (3), and a plurality of lower slots corresponding to the upper slots are provided on the upper end side surface of the lower end plate (4); any upper slot is connected to the corresponding lower slot to form a connecting slot (5) with a cross section that is wide at both ends and narrow in the middle; a connecting block (6) that matches the shape of the connecting slot (5) is inserted into any connecting slot (5).

2. The pipe pile connection structure according to claim 1, characterized in that: The upper pile section (1) and the lower pile section (2) are both circular tube piles, the upper end plate (3) and the lower end plate (4) are both annular, and the inner and outer diameters of the upper pile section (1), the lower pile section (2), the upper end plate (3) and the lower end plate (4) are all equal.

3. The pipe pile connection structure according to claim 2, characterized in that: The cross section of the connecting groove (5) is symmetrical about the upper and lower axes, and symmetrical about the left and right axes.

4. The pipe pile connection structure according to claim 3, characterized in that: The cross section of the upper slot is an isosceles trapezoid that is wide at the top and narrow at the bottom, and the cross section of the lower slot is an isosceles trapezoid that is narrow at the top and wide at the bottom, so that the cross section of the connecting slot (5) is an hourglass shape.

5. The pipe pile connection structure according to claim 2, characterized in that: The length directions of the plurality of connection grooves (5) are all along the radial direction, and the plurality of connection grooves (5) are evenly arranged along the circumferential direction.

6. The pipe pile connection structure according to claim 2, characterized in that: The lower edge of the upper end plate (3) and the upper edge of the lower end plate (4) are both provided with grooves.

7. The pipe pile connection structure according to claim 1, characterized in that: The upper end plate (3) and the lower end plate (4) are both provided with positioning holes (7), and the positioning holes (7) can cooperate with positioning pins so that the positions of the upper slots and the lower slots correspond one to another.

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