Pile top prefabricated adjusting section suitable for highway pile plate type structure
Through the combined connection of PHC pipe piles and RC adjustment sections, the penetration welding of steel plates and the steel bar socket connection are used to solve the problem of pile top elevation control, and the lightweight, rapid and fault tolerance of the highway pile plate structure is achieved, and industrial construction is promoted.
Patent Information
- Application Number
- CN202422344021.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-25
AI Technical Summary
In the existing highway pile plate structure, the pile top elevation control is difficult, resulting in low construction accuracy and efficiency, making it difficult to achieve industrial construction.
The combined connection method of PHC pipe piles and RC adjustment section is adopted, and the steel plate penetration welding and steel bar slot connection are used to achieve accurate adjustment of pile top elevation.
It has achieved lightweight, rapid and fault tolerance in construction, solved the problem of pile top elevation control, and promoted the industrial construction of highway pile plate structures.
Smart Images
Figure CN223135115U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of assembled concrete bridges, in particular to a pile top prefabricated regulating section suitable for a highway pile-slab structure. Background Art
[0002] The sheet pile structure is a load-bearing structure composed of pipe piles at the bottom and bridge deck at the top. It has flexible and adaptable structure and is widely used in highway engineering.
[0003] At present, considering the cost factor, 90% of the lower pipe piles of highway sheet pile structures are constructed by driving pile drivers. However, bridge projects are strip linear projects with large geological fluctuations. Compared with local point projects of construction projects, the elevation control of pipe piles in bridge projects is difficult and the elevation dispersion of pile tops is relatively large.
[0004] Therefore, in order to promote the development of industrialized construction of highway pile-slab structures, it is urgent to develop a prefabricated adjustment section on the top of a pile suitable for a highway pile-slab structure to effectively adjust the elevation of the pile top. Utility Model Content
[0005] In order to solve the problems raised in the above background technology, the utility model provides a prefabricated adjustment section on the top of a pile suitable for a highway pile-plate structure.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A prefabricated adjustment section for the top of a pile suitable for a highway pile-slab structure, comprising a PHC pipe pile at the bottom section and an RC adjustment section at the middle section;
[0008] The top of the PHC pipe pile is exposed above the ground, and a pipe pile steel end plate is provided on the top of the pile. A connecting adjustment section steel end plate is provided at the bottom of the RC adjustment section. The adjustment section steel end plate is butt-jointed with the pipe pile steel end plate, and a steel plate full penetration weld is used to weld and connect them along the periphery of the steel end plate.
[0009] The top of the RC adjustment section is consolidated with the prefabricated bridge deck of the pile-slab structure.
[0010] Further technology of the utility model:
[0011] Preferably, the main stress-bearing steel bars of the RC adjustment section extend out of the column top of the RC adjustment section, the corresponding conical holes are embedded in the prefabricated bridge deck, the main stress-bearing steel bars of the adjustment section are connected to the conical holes in a slot-type manner, and shrinkage compensating concrete is poured into the top of the conical holes.
[0012] Preferably, a 90-degree straight hook is provided at the bottom of the main reinforcement bars of the adjustment section. The straight hook is welded to the steel end plate of the adjustment section by a double-sided welded joint of the reinforcement bars, and the weld length is not less than 5ds, where ds is the diameter of the main reinforcement bars of the adjustment section.
[0013] Preferably, a steel sleeve hoop of the adjustment section is provided at the bottom of the RC adjustment section, and two rows of shear studs are welded to the inner wall of the steel sleeve hoop of the adjustment section.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] 1. Lightweight structure: The RC adjustment section and PHC pipe piles adopted in the present utility model are all prefabricated components in the factory, which are convenient for transportation and hoisting, and are beneficial to energy conservation and carbon reduction.
[0016] 2. Fast construction: The full prefabricated assembly construction is adopted, and the connection structure is simple and efficient.
[0017] 3. Good construction tolerance: The joint between the RC adjustment section and the PHC pipe pile is set at a height convenient for manual welding above the ground. The pipe section length of the RC adjustment section can be customized and adjusted according to the pile top elevation of the PHC pipe pile, fundamentally solving the problem that it is difficult to control the pile top elevation of the pipe pile driven by the driving method. Description of the Drawings
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings;
[0019] Figure 1 It is a general structure diagram of a precast adjustment section at the pile top applicable to a highway pile-slab structure;
[0020] Figure 2 It is a connection structure diagram of a precast adjustment section at the pile top applicable to a highway pile-slab structure.
[0021] In the figure, 1 - PHC pipe pile, 2 - RC adjustment section, 3 - main reinforcement bars of the adjustment section, 4 - precast bridge deck, 5 - reserved tapered hole, 6 - steel end plate of the adjustment section, 7 - double-sided welded joint, 8 - steel sleeve hoop of the adjustment section, 9 - shear stud, 10 - full penetration welded joint of the steel plate, 11 - steel end plate of the pipe pile. Detailed Embodiments
[0022] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further illustrated below with reference to specific drawings.
[0023] The utility model provides a prefabricated adjustment section on the top of a pile suitable for a highway pile-slab structure, which is composed of a prefabricated PHC pipe pile and a prefabricated RC adjustment section. The bottom section is a PHC pipe pile, the middle section is an RC adjustment section, and the top of the column is consolidated with the prefabricated bridge deck of the pile-slab structure.
[0024] PHC pipe piles are prestressed high-strength concrete pipe piles, which are mature construction products produced in factories.
[0025] The RC adjustment section is a reinforced concrete solid pier column, which is a customized product produced in a factory.
[0026] The PHC pipe piles and the RC adjusting section are connected by full penetration welding of steel end plates.
[0027] The RC adjustment section is connected to the precast bridge deck through a steel bar slot type.
[0028] See also Figure 1 The bottom section PHC pile 1 is constructed by driving method. After driving, the height H of the adjustment section that needs to be extended is generally controlled at about 2m, and the allowable error can float within the range of plus or minus 1m to adapt to the pile top elevation with large discreteness in driving method construction.
[0029] The model of PHC pile 1 should not be lower than AB type, and the outer diameter D should be 500mm, 600mm and other specifications.
[0030] See also Figure 1 The RC adjustment section 2 of the middle section is customized in the factory, and its length H is calculated based on the top elevation of the precast bridge deck 4 and the top elevation of the PHC pipe pile 1 of the bottom section. The specific formula is H = designed top elevation of the precast bridge deck - bridge deck height - actual top elevation of the PHC pipe pile on site.
[0031] See also Figure 2 The bottom of the RC adjustment section 2 is provided with a connecting steel end plate 6. The thickness of the adjustment section steel end plate 6 should not be less than 2 cm, and the material can be made of Q235B steel plate. A 90-degree straight bend hook is provided at the bottom of the main force-bearing steel bar 3 of the adjustment section. The straight bend hook and the steel end plate 6 are welded and connected by a double-sided steel bar weld 7. The length of the weld is not less than 5ds, where ds is the diameter of the main force-bearing steel bar 3 of the adjustment section.
[0032] See also Figure 2 At the same time, an adjusting section steel hoop 8 is arranged at the bottom of the RC adjusting section 2, and two rows of shear nails 9 are welded on the inner wall of the adjusting section steel hoop 8 to strengthen the bonding with the column concrete.
[0033] See also Figure 2, when the RC adjusting section 2 is connected to the PHC pipe pile 1, the steel end plate 6 of the adjusting section is butt-jointed with the steel end plate 11 of the pipe pile, and a full-penetration welded joint 10 of steel plates is used for welding connection along the periphery of the steel end plate. During welding, it is advisable to first perform 4 to 6 symmetric tack welds around the weld groove, and then perform layered welding after the upper and lower pile columns are fixed. The number of welding layers should be three, and the welds should be continuous and full.
[0034] See Figure 1 , during factory manufacturing, the main stressed steel bars 3 of the adjusting section extend out of the column top of the RC adjusting section 2, and the extension length should not be less than 24ds, where ds is the diameter of the main stressed steel bars 3 of the adjusting section. At the same time, the precast bridge deck 4 is provided with tapered holes 5 corresponding to the positions where the main stressed steel bars of the adjusting section extend, so as to facilitate subsequent steel bar socket connection.
[0035] See Figure 1 , when the precast bridge deck 4 is installed, the main stressed steel bars 3 of the adjusting section are centered and sleeved into the tapered holes 5 reserved in the bridge deck, and then shrinkage-compensating concrete is poured into the top of the tapered holes 5. Thus, the final connection is completed.
[0036] In this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.
[0037] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.
Claims
1. A precast adjustment section at the pile top applicable to the pile - slab structure of a highway, characterized in that Including PHC piles at the bottom section and RC adjustment section at the middle section; The top of the PHC pipe pile is exposed above the ground, and a pipe pile steel end plate is provided on the top of the pile. An adjustment section steel end plate is provided at the bottom of the RC adjustment section. The adjustment section steel end plate is butt-jointed with the pipe pile steel end plate, and a steel plate full penetration weld is used to weld them along the periphery of the steel end plate. The top of the RC adjustment section is consolidated with the prefabricated bridge deck of the pile-slab structure.
2. The precast adjustment section at the pile top applicable to the pile - slab structure on the road according to claim 1, wherein: The main stress-bearing steel bars of the RC adjustment section extend out of the column top of the RC adjustment section, the corresponding conical holes are embedded in the prefabricated bridge deck, the main stress-bearing steel bars of the adjustment section are connected to the conical holes in a slot-type manner, and shrinkage compensating concrete is poured into the top of the conical holes.
3. The precast adjustment section at the pile top applicable to the pile-plank structure on the road according to claim 2, characterized in that: A 90-degree straight bend hook is arranged at the bottom of the main stress-bearing steel bar of the adjustment section. The straight bend hook is connected to the steel end plate of the adjustment section by double-sided welding of the steel bar. The length of the weld is not less than 5ds, where ds is the diameter of the main stress-bearing steel bar of the adjustment section.
4. A precast adjustment section at the pile top applicable to the pile-plank structure of a highway, characterized in that: An adjusting section steel hoop is arranged at the bottom of the RC adjusting section, and two rows of shear nails are welded on the inner wall of the adjusting section steel hoop.