Prestressed concrete pipe pile
By using concrete material, internal reinforced cage mesh, peripheral bumps and reinforced wing components in prestressed concrete pipe piles, the problems of high cost and construction difficulty in the existing technology are solved, and the problem of large pile sizes is achieved. Improve load-bearing capacity and reduce costs.
Patent Information
- Application Number
- CN202420954296.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When existing prestressed concrete pipe piles meet the bearing capacity requirements, the pile body size is relatively large, resulting in high manufacturing and transportation costs and increasing construction difficulty.
A prestressed concrete pipe pile was designed, using concrete pile body and a steel cage mesh inside. There are multiple bumps on the outside of the pile body. The main rib is tightened by a prestressed tension plate to form a steel cage and the steel bar is placed on the steel bar. Reinforcement wing assembly is provided on the outside of the cage mesh to increase friction.
By adding bumps and reinforced wing components, the friction between the pipe piles and the soil is improved, the bending strength and structural strength of the pipe piles are enhanced, the production and construction costs are reduced, and the pile body size is reduced.
Smart Images
Figure CN222435261U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building pile structures, in particular to a prestressed concrete pipe pile. Background Art
[0002] Prestressed concrete pipe piles, also known as precast concrete piles, are a type of pile that is prefabricated in a prefabricated component processing plant, and after curing, it reaches the designed strength, is transported to the construction site, and driven into the soil by a pile driver. Because of its advantages of easy production and large bearing capacity, it has been widely used in many projects in recent years. According to different stratum conditions, prestressed pipe piles can be used as end-bearing piles or friction piles. When prestressed pipe piles are used as friction piles, their bearing capacity mainly depends on the contact area between the pile and the soil. The larger the contact area between the pile body and the soil, the greater the friction resistance on the pile side, and the greater the bearing capacity of the prestressed pipe pile. Existing prestressed concrete pipe piles are usually cylindrical piles. Under the same (diameter) size, the contact area between the cylindrical pile body and the soil body is the smallest. Therefore, under the condition of meeting the bearing capacity requirements, the size of the cylindrical pile body needs to be set relatively large, and the large size of the pile body will increase its manufacturing and transportation costs, and will also increase the difficulty of pile construction. Therefore, in order to reduce the production and construction costs of friction piles, a prestressed concrete pipe pile structure is needed that can meet the bearing capacity requirements of friction piles and reduce the size of the pile body. Utility Model Content
[0003] In view of this, in order to improve the bearing capacity of friction piles and reduce the production and construction costs of friction piles, the utility model provides a prestressed concrete pipe pile, comprising a pile body and prestressed tension plates arranged at both ends of the pile body.
[0004] The pile body comprises a pile body made of concrete and a steel cage arranged inside the pile body; a plurality of protrusions are arranged on the outside of the pile body;
[0005] The steel cage mesh includes a plurality of main bars and a plurality of stirrups; both ends of all the main bars are respectively fixed on the two prestressed tension plates, and the main bars are in a tensioned state, and all the main bars are arranged in parallel to form a steel cage body; the stirrups are all annular, and the stirrups are all clamped and fixed on the steel cage body;
[0006] The steel cage net is fixed with at least one reinforcing wing assembly, each reinforcing wing assembly includes a plurality of wing plates, the wing plates are fixed on the outside of the steel cage body and are parallel to the main reinforcements, and each main reinforcement is located in a protrusion.
[0007] Furthermore, both prestressed pull plates are provided with tightening holes, and both ends of the main reinforcement are respectively provided with fastening heads and fastening threads, and the fastening thread ends of the main reinforcement are provided with fastening nuts, and the two ends of the main reinforcement respectively pass through the tightening holes on the two prestressed pull plates, and the fastening heads and fastening nuts are respectively located on the outsides of the two prestressed pull plates, and the fastening nuts tighten the main reinforcement.
[0008] Furthermore, each of the two prestressed tension plates is connected to a connecting plate.
[0009] Furthermore, the prestressed tension plate and the connection plate are connected via a connecting pipe column.
[0010] Furthermore, each of the reinforcing wing components also includes two connecting ring sleeves, both of which are sleeved on the steel cage net, and both ends of the wing plate are respectively fixed on the connecting ring sleeves.
[0011] Furthermore, each wing plate is also provided with an arc-shaped supporting rib, the supporting rib is connected with the wing plate to form an integral structure, and the supporting rib is welded to the connecting ring sleeve.
[0012] Furthermore, there are two reinforcing wing assemblies, which are relatively arranged on the steel cage net one above the other.
[0013] Furthermore, the number of the protrusions is three, and the three protrusions are evenly arranged on the outside of the pile body.
[0014] Furthermore, the cross-sectional outer edge shapes of the connecting plate, the prestressed tension plate and the pile body are the same.
[0015] Furthermore, the pile body is provided with a weight-reducing hole axially, and the weight-reducing hole makes the pile body present a hollow structure.
[0016] The utility model has the following beneficial effects: the prestressed concrete pipe pile includes a pile body and prestressed tension plates arranged at both ends of the pile body, wherein the pile body includes a concrete pile body and a steel cage arranged in the pile body; the steel cage includes a plurality of main bars, the two ends of the main bars are respectively fixed on two prestressed tension plates, and the main bars are tightened by the two prestressed tension plates, so that the main bars are prestressed, thereby improving the bending strength of the pipe pile, and the pile body is provided with a plurality of protrusions on the outside, and the protrusion structure makes the cross section of the pile body plum blossom-shaped, which can improve the friction between the pile body and the soil, thereby improving the bearing capacity of the pile body under the condition of a certain overall cross-sectional area; the prestressed concrete pipe pile can significantly reduce the production and construction costs of the friction pile when used as a friction pile. In addition, the steel cage of the prestressed concrete pipe pile is also provided with a wing plate on the outside, and the wing plate is embedded in the corresponding protrusion, which can improve the friction between the steel cage and the concrete pile body, thereby improving the structural strength of the pipe pile itself. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 The utility model is a schematic structural diagram of a steel cage mesh of a prestressed concrete pipe pile according to an embodiment of the utility model.
[0018] Figure 2 The utility model is a schematic structural diagram of a prestressed concrete pipe pile body according to an embodiment of the utility model.
[0019] Figure 3 yes Figure 1 Top view of the middle connecting plate.
[0020] Figure 4 It is a schematic diagram of a cross section of a prestressed concrete pipe pile according to an embodiment of the utility model.
[0021] Figure 5 It is a stereoscopic view of a reinforcing wing assembly on a steel cage net of a prestressed concrete pipe pile according to an embodiment of the utility model.
[0022] In the above figure: 1-pile body, 11-bump, 12-weight reduction hole, 2-prestressed tension plate, 3-connecting plate, 4-connecting pipe column, 5-main reinforcement, 51-fastening head, 52-fastening nut, 6-stirrup, 7-connecting ring sleeve, 8-wing plate, 81-support rib. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the present utility model clearer, the implementation mode of the present utility model will be further described below in conjunction with the accompanying drawings.
[0024] Please refer to Figures 1 to 5 A prestressed concrete pipe pile comprises a pile body and prestressed tension plates 2 arranged at both ends of the pile body.
[0025] The pile body comprises a pile body 1 made of concrete and a steel cage arranged in the pile body 1; a plurality of protrusions 11 are arranged on the outside of the pile body, and the pile body 1 and the protrusions 11 are an integral structure cast with concrete; all the protrusions 11 are evenly arranged around the pile body 1, and all the protrusions 11 are parallel to the pile body 1. In this embodiment, the protrusions 11 are arc protrusions, and the structure of the protrusions 11 makes the pile body 1 plum blossom-shaped.
[0026] The steel cage mesh includes a plurality of main bars 5 and a plurality of stirrups 6; both ends of all the main bars 5 are respectively fixed on the two prestressed tension plates 2, and the main bars 5 are tightened so that the main bars 5 are in a prestressed state, all the main bars 5 are arranged in parallel, and the main bars 5 form an arc-shaped steel cage body; the stirrups 6 are all annular, and the stirrups 6 are all tightened and fixed on the steel cage body to form the steel cage mesh. In this embodiment, all the stirrups 6 are fixed to the main bars 5 of the steel cage body by welding.
[0027] The steel cage mesh is fixed with at least one reinforcing wing assembly, each reinforcing wing assembly includes a plurality of wing plates 8 , the wing plates 8 are fixed to the outside of the steel cage body and are parallel to the main reinforcements 5 , and each main reinforcement 5 is located in a protrusion 11 .
[0028] In the above structure, all main bars 5 are in a prestressed state, which can improve the bending resistance of the pipe pile; and a plurality of protrusions are provided on the outside of the pile body, and the protrusion structure makes the cross-section of the pile body plum blossom-shaped, which can increase the friction between the pile body and the soil under the same pile body volume, thereby improving the bearing capacity of the pile body; the wing plates on the outside of the above-mentioned steel cage mesh are embedded in the corresponding protrusions, which can increase the friction between the steel cage mesh and the concrete pile body 1, thereby improving the structural strength of the pipe pile itself.
[0029] Preferably, tightening holes are provided on the two prestressed tension plates 2, and fastening heads 51 and fastening threads are provided at both ends of the main reinforcement 5 respectively. Fastening nuts 52 are provided at the fastening thread ends of the main reinforcement 5, and the two ends of the main reinforcement 5 respectively pass through the tightening holes on the two prestressed tension plates 2, and the fastening heads 51 and the fastening nuts 52 are respectively located on the outsides of the two prestressed tension plates 2, and the fastening nuts 52 tighten the main reinforcement 5.
[0030] Furthermore, each of the two prestressed tension plates 2 is also connected to a connecting plate 3; the prestressed tension plates 2 and the connecting plates 3 are connected via a connecting pipe column 4. In this embodiment, the number of the protrusions 11 is three, and the three protrusions 11 are evenly arranged on the outside of the pile body 1. The cross-sectional outer edges of the connecting plates 3, the prestressed tension plates 2 and the pile body have the same shape. The connecting plates 3 are also provided with connecting holes, and the connecting pipe column 4 can form a certain gap between the connecting plates 3 and the prestressed tension plates 2, which can facilitate the connection between adjacent prestressed concrete pipe piles. It can be understood that the connecting plates 3 of the two prestressed concrete pipe piles are aligned, and the two aligned connecting plates 3 are connected together by tightening bolts, so that the two prestressed concrete pipe piles can be fixedly connected. The above-mentioned connecting plates 3 can facilitate the splicing between prestressed concrete pipe piles.
[0031] Furthermore, each of the reinforcing wing components further comprises two connecting rings 7, both of which are sleeved on the steel cage net, and both ends of the wing plate 8 are respectively fixed on the connecting rings 7. Each wing plate 8 is also provided with an arc-shaped supporting rib 81, which is an integral structure formed integrally with the wing plate 8, and the supporting rib 81 is welded to the connecting ring 7, and the supporting rib 81 is set in an arc shape, so that the surface of the supporting rib 81 can be closely attached to the connecting ring 7, thereby ensuring the connection strength between the wing plate 8 and the connecting ring 7.
[0032] In this embodiment, there are two reinforcing wing assemblies, which are relatively arranged on the steel cage net up and down. The length of the wing plate 8 of each reinforcing wing assembly can be adjusted according to the actual length of the pile body.
[0033] Preferably, the pile body is provided with a weight-reducing hole 12 in the axial direction, and the weight-reducing hole 12 makes the pile body a hollow structure, so that the mass of the pile body can be reduced while ensuring the strength of the pile body.
[0034] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.
[0035] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.
[0036] 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, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A prestressed concrete pipe pile, characterized in that: include: The pile body and the prestressed tension plates at both ends of the pile body, The pile body comprises a pile body made of concrete and a steel cage arranged inside the pile body; a plurality of protrusions are arranged on the outside of the pile body; The steel cage mesh includes a plurality of main bars and a plurality of stirrups; both ends of all the main bars are respectively fixed on the two prestressed tension plates, and the main bars are in a tensioned state, and all the main bars are arranged in parallel to form a steel cage body; the stirrups are all annular, and the stirrups are all clamped and fixed on the steel cage body; At least one reinforcing wing assembly is fixedly provided on the steel cage net, and each reinforcing wing assembly includes a plurality of wing plates, and the wing plates are fixed on the outside of the steel cage body and are parallel to the main reinforcements, and each main reinforcement is located in a protrusion.
2. A prestressed concrete pipe pile according to claim 1, characterized in that: Both prestressed pull plates are provided with tightening holes, and both ends of the main reinforcement are respectively provided with fastening heads and fastening threads, and the fastening thread ends of the main reinforcement are provided with fastening nuts. The two ends of the main reinforcement respectively pass through the tightening holes on the two prestressed pull plates, and the fastening heads and fastening nuts are respectively located on the outsides of the two prestressed pull plates, and the fastening nuts tighten the main reinforcement.
3. The prestressed concrete pipe pile according to claim 1, characterized in that: Every two prestressed tension plates are connected with a connecting plate.
4. A prestressed concrete pipe pile according to claim 3, characterized in that: The prestressed tension plate and the connection plate are connected via a connecting pipe column.
5. The prestressed concrete pipe pile according to claim 1, characterized in that: Each of the reinforcing wing components further comprises two connecting ring sleeves, both of which are sleeved on the steel cage net, and both ends of the wing plate are respectively fixed on the connecting ring sleeves.
6. The prestressed concrete pipe pile according to claim 5, characterized in that: Each wing plate is also provided with an arc-shaped supporting rib plate, the supporting rib plate is connected with the wing plate to form an integral structure, and the supporting rib plate is welded to the connecting ring sleeve.
7. The prestressed concrete pipe pile according to claim 5, characterized in that: There are two reinforcing wing assemblies, which are relatively arranged on the steel cage net up and down.
8. The prestressed concrete pipe pile according to claim 1, characterized in that: The number of the protrusions is three, and the three protrusions are evenly arranged on the outside of the pile body.
9. The prestressed concrete pipe pile according to claim 4, characterized in that: The cross-sectional outer edge shapes of the connecting plate, the prestressed tension plate and the pile body are all the same.
10. The prestressed concrete pipe pile according to claim 1, characterized in that: The pile body is provided with a weight-reducing hole in the axial direction, and the weight-reducing hole makes the pile body a hollow structure.