Search

CN-121976558-A - Connection structure of prefabricated pipe pile and prefabricated bearing platform

CN121976558ACN 121976558 ACN121976558 ACN 121976558ACN-121976558-A

Abstract

The invention discloses a connecting structure of a prefabricated pipe pile and a prefabricated bearing platform, and relates to the technical field of pile foundation engineering. The high-strength concrete pouring device comprises a prefabricated pipe pile, wherein the prefabricated pile is sleeved on the top of the prefabricated pipe pile, ultra-high-performance concrete is filled in the prefabricated pipe pile and the prefabricated pile, a lower hoop is sleeved outside the prefabricated pipe pile and connected with the bottom surface of the prefabricated pile, an upper anchor is arranged in the prefabricated pipe pile and close to the end of the lower hoop, the upper anchor comprises an anchor piece arranged in the prefabricated pipe pile and close to the end of the lower hoop, an upper cover plate is connected to the anchor piece through a plurality of high-strength bolts, and pouring holes are coaxially formed in the upper cover plate. The invention has the advantages of definite stress, easy installation, high strength performance and the like.

Inventors

  • ZHOU YECHAO
  • MIAO WEI
  • ZHOU YUNQIANG
  • ZHU ZHANGFENG
  • JIN PENGCHENG
  • MENG HAO
  • GUAN DONGZHI

Assignees

  • 中车城市交通规划设计研究院有限公司

Dates

Publication Date
20260505
Application Date
20260401

Claims (9)

  1. 1. Connection structure of prefabricated tubular pile and prefabricated cushion cap, its characterized in that includes: Prefabricating a tubular pile (1); The prefabricated pile cap (2) is sleeved on the top of the prefabricated pipe pile (1), and the prefabricated pipe pile (1) and the prefabricated pile cap (2) are filled with ultra-high performance concrete; The lower hoop (3) is sleeved outside the prefabricated pipe pile (1), and the lower hoop (3) is connected with the bottom surface of the prefabricated bearing platform (2); the upper anchor piece (4) is arranged in the precast tubular pile (1) and is close to the end of the lower hoop (3); The upper anchor (4) comprises an anchor piece (43) which is arranged in the precast tubular pile (1) and is close to the end of the lower hoop (3), the anchor piece (43) is connected with an upper cover plate (41) through a plurality of high-strength bolts (42), and pouring holes (411) are coaxially formed in the upper cover plate (41).
  2. 2. The connection structure of the prefabricated pipe pile and the prefabricated bearing platform according to claim 1, wherein the prefabricated bearing platform (2) is provided with a stepped connection hole (21), the top of the prefabricated pipe pile (1) is located in the stepped connection hole (21), a plurality of top surface reinforcing steel bars (22) are embedded in the inner peripheral wall of the stepped connection hole (21) at intervals horizontally, and the top surface reinforcing steel bars (22) are located above the top of the prefabricated pipe pile (1).
  3. 3. The connecting structure of the prefabricated pipe pile and the prefabricated bearing platform according to claim 2, wherein connecting steel bars (23) are further arranged in the stepped connecting holes (21), the connecting steel bars (23) are of a grid structure, and the inner peripheral wall end, far away from the stepped connecting holes (21), of the top steel bars (22) is connected with the connecting steel bars (23).
  4. 4. A connection structure of a precast tubular pile and a precast cap according to claim 2, characterized in that the top of the precast tubular pile (1) is flush with the lower step surface of the stepped connection hole (21) or the top of the precast tubular pile (1) penetrates above the lower step surface of the stepped connection hole (21).
  5. 5. A connection structure of a prefabricated pipe pile and a prefabricated abutment according to claim 2, characterized in that the lower ferrule (3) comprises: the outer sleeve steel plate (31) is sleeved outside the prefabricated pipe pile (1); The support angle steel (32), the support angle steel (32) is provided with a plurality of, a plurality of support angle steel (32) are distributed along the circumference of the outer peripheral wall of the outer sleeve steel plate (31), and the support angle steel (32) is in contact with the bottom surface of the prefabricated bearing platform (2); The split bolt (33), split bolt (33) are provided with a plurality of, the quantity of supporting angle steel (32) is the quantity twice of split bolt (33), split bolt (33) activity runs through anchor assembly (43) and overcoat steel sheet (31), split bolt (33) length direction's both ends all are provided with one supporting angle steel (32), and split bolt (33) length direction's both ends are connected respectively on two supporting angle steel (32) of corresponding position, split bolt (33) length direction's both ends all threaded connection has the nut.
  6. 6. A connection structure of a precast pile and a precast cap according to claim 5, wherein the anchor member (43) comprises: The upper anchor pipe (432) is of a hollow cylindrical structure, and the upper anchor pipe (432) is positioned in the prefabricated pipe pile (1) and close to the end of the outer sleeve steel plate (31); The number of the connecting angle steels (431) is the same as that of the high-strength bolts (42), the connecting angle steels (431) are circumferentially distributed along the inner circumferential wall of the upper anchor pipe (432), and the upper cover plate (41) is connected with the connecting angle steels (431) through the high-strength bolts (42); The lower supporting plate (433), lower supporting plate (433) are located precast tubular pile (1), and lower supporting plate (433) set up at last anchor pipe (432) and keep away from connecting angle steel (431) end, and upper cover plate (41) set up at last anchor pipe (432) and keep away from lower supporting plate (433) end.
  7. 7. A connection structure of a prefabricated pipe pile and a prefabricated pile cap according to claim 5, wherein the split bolts (33) are sequentially and intermittently distributed from top to bottom along the axial length of the anchoring member (43).
  8. 8. A connection structure of a precast pile and a precast cap according to claim 5, wherein the length of the precast pile (1) is greater than the length of the anchor (43).
  9. 9. The structure for connecting a precast tubular pile with a precast pile cap according to claim 8, wherein ultra-high performance concrete is filled in the stepped connecting hole (21) and between the top of the precast tubular pile (1) and the top surface of the lower supporting plate (433).

Description

Connection structure of prefabricated pipe pile and prefabricated bearing platform Technical Field The invention relates to the technical field of pile foundation engineering, in particular to a connecting structure of a prefabricated pipe pile and a prefabricated bearing platform. Background The prefabricated pipe pile is widely used in pile foundation engineering due to high strength, high durability and good product stability, but the connection between the prefabricated pipe pile and a bearing platform is generally realized by arranging connecting steel bars on pile heads and fully casting the bearing platform. The method inevitably causes a series of problems of complex field column cap processing, large reinforcing steel bar binding workload, complicated formwork support and the like, further influences the reliability of the connection node of the prefabricated pipe pile and the prefabricated bearing platform, and brings hidden danger to the earthquake resistance of the lower structure. The prefabricated pipe pile fully utilizes the advantages of the factory-like precast concrete technology, so that the prefabricated bearing platform is industrialized and green in the lower structure construction by adopting the prefabricated scheme, and the connecting node of the prefabricated pipe pile and the prefabricated bearing platform becomes the bottleneck for restricting the technical application. Therefore, a reliable and efficient connecting structure of the upper prefabricated pipe pile and the prefabricated bearing platform is explored, the application scene of the assembly type technology can be expanded, the industrialized transformation upgrading of the building industry is realized in a wider field, and the high-quality development of the building technology is promoted. Disclosure of Invention Aiming at the technical defects, the invention aims to provide a connecting structure of a prefabricated pipe pile and a prefabricated bearing platform, which has the advantages of definite stress, easy installation, high strength and the like. In order to solve the technical problems, the invention adopts the following technical scheme that the invention provides a connecting structure of a prefabricated pipe pile and a prefabricated bearing platform, which comprises the following components: Prefabricating a tubular pile; The prefabricated pile cap is sleeved on the top of the prefabricated pipe pile, and the prefabricated pipe pile and the prefabricated pile cap are filled with ultra-high performance concrete; The lower hoops are sleeved outside the prefabricated pipe piles and connected with the bottom surface of the prefabricated bearing platform; The upper anchor is arranged in the precast tubular pile and close to the lower hoop end; The upper anchor comprises an anchor piece which is arranged in the prefabricated pipe pile and is close to the end of the lower hoop, the anchor piece is connected with an upper cover plate through a plurality of high-strength bolts, and pouring holes are coaxially formed in the upper cover plate. Preferably, the prefabricated pile cap is provided with a stepped connecting hole, the top of the prefabricated pile is positioned in the stepped connecting hole, a plurality of top surface reinforcing steel bars are embedded in the inner peripheral wall of the stepped connecting hole at intervals horizontally, the top surface reinforcing steel bars are positioned above the top of the prefabricated pile cap, and the strength of the stepped connecting hole is improved after ultra-high performance concrete is conveniently poured into the stepped connecting hole. Preferably, the step-shaped connecting hole is internally provided with connecting steel bars, the connecting steel bars are of a grid-shaped structure, and the inner peripheral wall end, far away from the step-shaped connecting hole, of the steel bars on the top surface is connected with the connecting steel bars, so that the strength of the step-shaped connecting hole is improved after the ultra-high-performance concrete is poured into the step-shaped connecting hole. Preferably, the top of the prefabricated pipe pile is flush with the lower step surface of the stepped connecting hole or penetrates to the upper side of the lower step surface of the stepped connecting hole. Preferably, the lower ferrule includes: the outer sleeve steel plate is sleeved outside the prefabricated pipe pile; the support angle steel is provided with a plurality of support angle steel, the plurality of support angle steel are circumferentially distributed along the outer peripheral wall of the outer sleeve steel plate, and the support angle steel is in contact with the bottom surface of the prefabricated bearing platform; the split bolt is provided with a plurality of split bolts, the quantity of the supporting angle steel is twice that of the split bolts, the split bolts movably penetrate through the anchoring piece and the outer sleeve steel