Pier structure based on prestressed PHC pipe piles and PRC pipe piles
By using prestressed PHC pipe piles and PRC pipe piles in the bridge pier structure, combining high-performance and ultra-high-performance concrete joints, temporary hoops and outer steel sleeves, the problems of complex and high cost of the existing bridge pier structure are solved, and the construction of the existing bridge pier structure is achieved. More efficient and environmentally friendly bridge pier structure construction.
Patent Information
- Application Number
- CN202420108353.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-16
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-16
AI Technical Summary
The existing bridge pier structure has problems such as slow speed, high labor intensity, great impact on environmental protection, and complex production and on-site connection processes and high costs during construction.
The bridge pier structure based on prestressed PHC pipe piles and PRC pipe piles are adopted. The PHC pipe piles are connected to the prefabricated reinforced concrete beams through high-performance concrete joints. The beams are connected to the PRC pipe piles. UHPC joints and ultra-high performance concrete are used to temporarily hold them. The hoop and outer steel sleeve are matched with rubber strips to simplify construction and improve connection tightness.
The construction process is simplified, labor intensity and cost are reduced, the strength and connection tightness of the bridge pier structure are improved, and environmental protection requirements are met.
Smart Images
Figure CN222477199U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge pier structures, in particular to a bridge pier structure based on prestressed PHC pipe piles and PRC pipe piles. Background Art
[0002] Bridges can be used for railways, roads, pedestrians, etc. to cross rivers, valleys or other transportation routes. They are increasingly widely used in modern transportation construction. However, as the transportation network becomes more and more dense, once the bridge piers are damaged by the impact of traffic accidents or earthquakes, it will directly lead to the loss of the traffic function of the upper and lower lines, bringing huge harm. It is necessary to use the pier structure of PHC pipe piles and PRC pipe piles to improve the strength of the bridge.
[0003] During the construction of existing bridge piers, there are problems such as construction speed, labor intensity, and great impact on environmental protection. The investment in temporary prefabrication sites for prefabricated substructures is high, and the joint structure is complex. In addition, the prefabricated substructures used mostly use steel structure concrete structure technology, and the existing bridge pier structure production and on-site connection technology is complex and costly.
[0004] Therefore, the applicant has made improvements to this and proposed a pier structure based on prestressed PHC pipe piles and PRC pipe piles. Utility Model Content
[0005] The purpose of the utility model is to solve the existing problems of complex production and on-site connection processes and high costs.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A pier structure based on prestressed PHC pipe piles and PRC pipe piles comprises PHC pipe piles, precast reinforced concrete tie beams and pipe pile reinforcements, wherein the PHC pipe piles are connected to the precast reinforced concrete tie beams via high-performance concrete joints, the precast reinforced concrete tie beams are connected to the PRC pipe piles via high-performance concrete joints, UHPC joints are installed on the PRC pipe piles, precast reinforced concrete cap beams are installed on the UHPC joints, temporary clamps are installed on the PHC pipe piles and the PRC pipe piles, an outer steel sleeve is installed on the temporary clamp, the outer steel sleeve is installed on the precast reinforced concrete tie beam via the temporary clamp, a support plate is arranged inside the PHC pipe piles, a rubber strip is installed on the outer steel sleeve, and the pipe pile reinforcements are arranged in ultra-high performance concrete.
[0008] Preferably, the UHPC joint consists of a cap beam steel corrugated pipe sleeve, a steel cage and UHPC concrete.
[0009] Preferably, the high performance concrete joint is composed of a tie beam steel corrugated pipe sleeve, a steel cage and ultra-high performance concrete.
[0010] Preferably, the PHC pipe piles and PRC pipe piles are prestressed high-strength concrete pipe piles, which are made by pre-stressed centrifugal forming technology and are cured by steam at 10 atmospheres and about 180°C.
[0011] Preferably, the PHC pipe piles are symmetrically distributed on both sides of the prefabricated reinforced concrete tie beam, and the PHC pipe piles correspond one-to-one with the PRC pipe piles through high-performance concrete joints.
[0012] Preferably, the pipe pile reinforcements are distributed at equal angles in the ultra-high performance concrete.
[0013] Compared with the prior art, the advantages and beneficial effects of the utility model are as follows:
[0014] Through the set UHPC joint, the tie beam steel corrugated pipe sleeve is set when the precast reinforced concrete tie beam is prefabricated, and the steel cage connects the PHC pile and the PRC pile. The ultra-high performance concrete should meet the requirements of good fluidity, high strength and self-compacting. In order to realize the pouring of ultra-high performance concrete, the high-performance concrete joint needs to set temporary hoops above and below the precast reinforced concrete tie beam. The temporary hoops are set on the PHC piles and the PRC piles. When pouring ultra-high performance concrete, the outer steel sleeve set on the temporary hoop and the rubber strip on the outer steel sleeve can improve the tightness of the connection of the precast reinforced concrete tie beam with the rubber strip in combination with the outer steel sleeve. The operation is simple and can reduce the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic diagram of the overall structure of a pier structure based on prestressed PHC pipe piles and PRC pipe piles provided by the utility model;
[0016] Figure 2 A schematic diagram of the side view structure of a prefabricated reinforced concrete cap beam of a pier structure based on prestressed PHC pipe piles and PRC pipe piles provided by the utility model;
[0017] Figure 3 A schematic diagram of the side view structure of a prefabricated reinforced concrete tie beam of a pier structure based on prestressed PHC pipe piles and PRC pipe piles provided by the utility model;
[0018] Figure 4 A schematic diagram of a top view of a steel cage of a pier structure based on prestressed PHC pipe piles and PRC pipe piles provided by the utility model;
[0019] Figure 5 A schematic diagram of the side view structure of a temporary hoop of a pier structure based on prestressed PHC pipe piles and PRC pipe piles provided by the utility model.
[0020] Explanation of the reference numerals: 1. PHC pipe pile; 2. Precast reinforced concrete tie beam; 3. PRC pipe pile; 4. Precast reinforced concrete cap beam; 5. UHPC joint; 6. High-performance concrete joint; 7. Ultra-high-performance concrete; 8. Tie beam steel corrugated pipe sleeve; 9. Steel cage; 10. Temporary clamp; 11. Support plate; 12. Outer steel sleeve; 13. Rubber strip; 14. Pipe pile reinforcement; 15. Cap beam steel corrugated pipe sleeve; 16. UHPC concrete. DETAILED DESCRIPTION
[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the applicant will combine the accompanying drawings to clearly and completely describe the technical solution in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them.
[0022] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the present invention to be protected, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0023] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
[0024] Embodiment 1:
[0025] like Figure 1-5 As shown, this embodiment proposes a pier structure based on prestressed PHC pipe piles and PRC pipe piles, including a PHC pipe pile 1, a precast reinforced concrete tie beam 2 and pipe pile steel bars 14, the PHC pipe pile 1 is connected to the precast reinforced concrete tie beam 2 through a high-performance concrete joint 6, the precast reinforced concrete tie beam 2 is connected to the PRC pipe pile 3 through a high-performance concrete joint 6, a UHPC joint 5 is installed on the PRC pipe pile 3, a precast reinforced concrete cap beam 4 is installed on the UHPC joint 5, a temporary clamp 10 is installed on the PHC pipe pile 1 and the PRC pipe pile 3, an outer steel sleeve 12 is installed on the temporary clamp 10, and the outer steel sleeve 12 is installed on the precast reinforced concrete tie beam 2 through the temporary clamp 10, a support plate 11 is arranged in the PHC pipe pile 1, a rubber strip 13 is installed on the outer steel sleeve 12, and the pipe pile steel bars 14 are arranged in the ultra-high performance concrete 7.
[0026] Embodiment 2:
[0027] The solution in Example 1 is further introduced below in combination with a specific working method, as described below:
[0028] like Figure 5As shown, as a preferred embodiment, on the basis of the above method, further, the UHPC joint 5 is composed of a cap beam steel corrugated pipe sleeve 15, a steel cage 9, and UHPC concrete 16, which can ensure that the composed UHPC joint 5 can fully connect the PRC pipe pile 3 with the prefabricated reinforced concrete cap beam 4.
[0029] like Figure 3 As shown, as a preferred implementation, on the basis of the above-mentioned method, further, the high-performance concrete joint 6 is composed of a tie beam steel corrugated pipe sleeve 8, a steel cage 9, and an ultra-high performance concrete 7, which can ensure that the high-performance concrete joint 6 can connect the PHC pile 1 and the PRC pile 3 to the prefabricated reinforced concrete tie beam 2.
[0030] like Figure 4 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the PHC pipe pile 1 and the PRC pipe pile 3 are prestressed high-strength concrete pipe piles, which adopt the pre-stressed centrifugal forming process and are subjected to steam curing at about 10 atmospheres of pressure 1.0Mpa and about 180°C to form a hollow cylindrical concrete prefabricated component with a standard section length of 10m, which can ensure that the hollow cylindrical PHC pipe pile 1 and PRC pipe pile 3 can be easily cast.
[0031] like Figure 1 As shown, as a preferred embodiment, on the basis of the above method, further, the PHC piles 1 are symmetrically distributed on both sides of the prefabricated reinforced concrete tie beam 2, and the PHC piles 1 correspond to the PRC piles 3 one by one through the high-performance concrete joints 6, which can ensure that the PHC piles 1 and the PRC piles 3 on both sides can be stably supported.
[0032] like Figure 4 As shown, as a preferred embodiment, on the basis of the above method, further, the pipe pile reinforcement 14 is distributed at equal angles in the ultra-high performance concrete 7, which can ensure that the high-performance concrete joints 6 distributed at equal angles can enhance the strength of the casting.
[0033] Specifically, the pier structure based on prestressed PHC pipe piles and PRC pipe piles is used in combination with Figure 1-5The tie beam steel corrugated pipe sleeve 8 is set when the precast reinforced concrete tie beam 2 is precast, the steel cage 9 connects the PHC pile 1 and the PRC pile 3, the ultra-high performance concrete 7 should meet the requirements of good fluidity, high strength and self-compacting, and the high-performance concrete joint 6 needs to set temporary clamps 10 above and below the precast reinforced concrete tie beam 2 to achieve the pouring of ultra-high performance concrete 7. The temporary clamps 10 are set on the PHC pile 1 and the PRC pile 3. When pouring the ultra-high performance concrete 7, the outer steel sleeve 12 is set on the temporary clamp 10, and the rubber strip 13 is set on the outer steel sleeve 12. The rubber strip 13 cooperates with the rubber strip 13 to The outer steel sleeve 12 can improve the tightness of the connection of the precast reinforced concrete tie beam 2. The cap beam steel corrugated pipe sleeve 15 is set in an inverted funnel shape when the precast reinforced concrete cap beam 4 is precast. The steel cage 9 is connected to the PRC pile 3 and extends into the precast reinforced concrete cap beam 4. The UHPC concrete 16 can meet the requirements of good fluidity and self-compacting. The pouring of the UHPC concrete 16 can be achieved through the UHPC joint 5. A support plate 11 is set in the PHC pile 1 and the PRC pile 3. The pile steel bars 14 and the steel cage 9 are installed on the support plate 11. The UHPC concrete 16 that is poured can be cast and formed.
Claims
1. A bridge pier structure based on prestressed PHC pipe piles and PRC pipe piles, comprising PHC pipe piles (1), prefabricated reinforced concrete tie beams (2) and pipe pile steel bars (14), characterized in that: The PHC pipe pile (1) is connected to the precast reinforced concrete tie beam (2) via a high-performance concrete joint (6), the precast reinforced concrete tie beam (2) is connected to the PRC pipe pile (3) via a high-performance concrete joint (6), the PRC pipe pile (3) is provided with a UHPC joint (5), the UHPC joint (5) is provided with a precast reinforced concrete cap beam (4), the PHC pipe pile (1) and the PRC pipe pile (3) are provided with a temporary clamp (10), the temporary clamp (10) is provided with an outer steel sleeve (12), the outer steel sleeve (12) is provided on the precast reinforced concrete tie beam (2) via the temporary clamp (10), a support plate (11) is provided in the PHC pipe pile (1), a rubber strip (13) is provided on the outer steel sleeve (12), and the pipe pile steel bar (14) is provided in ultra-high performance concrete (7).
2. A pier structure based on prestressed PHC pipe piles and PRC pipe piles according to claim 1, characterized in that: The UHPC joint (5) is composed of a cap beam steel corrugated pipe sleeve (15), a steel cage (9), and UHPC concrete (16).
3. A pier structure based on prestressed PHC pipe piles and PRC pipe piles according to claim 1, characterized in that: The high performance concrete joint (6) is composed of a tie beam steel corrugated pipe sleeve (8), a steel cage (9) and ultra-high performance concrete (7).
4. A pier structure based on prestressed PHC pipe piles and PRC pipe piles according to claim 1, characterized in that: The PHC pipe pile (1) and the PRC pipe pile (3) are prestressed high-strength concrete pipe piles, which are made by using a pre-tensioned prestressed centrifugal forming process and undergoing steam curing at 10 atmospheres and about 180°C.
5. The pier structure based on prestressed PHC pipe piles and PRC pipe piles according to claim 1, characterized in that: The PHC pipe piles (1) are symmetrically distributed on both sides of the prefabricated reinforced concrete tie beam (2), and the PHC pipe piles (1) correspond one-to-one with the PRC pipe piles (3) via high-performance concrete joints (6).
6. The pier structure based on prestressed PHC pipe piles and PRC pipe piles according to claim 1, characterized in that: The pipe pile reinforcement bars (14) are distributed at equal angles in the ultra-high performance concrete (7).