CN-224213115-U - Precast spliced pier grouting joint structure

Abstract

The utility model discloses a prefabricated spliced pier grouting joint structure which comprises a bearing platform and prefabricated pier column sections, wherein reserved through holes which are longitudinally communicated are formed in the bearing platform and the prefabricated pier column sections, a reinforcement cage is arranged in each reserved through hole, prefabricated slot holes which are matched with the prefabricated pier column sections are formed in the top end of the bearing platform, positioning connection structures which are mutually embedded are prefabricated at the connection positions of two adjacent prefabricated pier column sections, and the positioning conical grooves at the two ends of the prefabricated pier column sections and the conical surfaces of compression connection conical heads are designed in a self-locking manner.

Inventors

• XU ZHOU
• XU YANGFU
• QIU WEI
• WU FEI
• LI YONGGU
• TAN ZHICHENG
• QI TIAN
• XIONG HUA
• ZHANG WEI
• WANG ZHIWU
• He Chaofa
• WEI HAITAO
• CHEN YONG
• XIONG MIN
• Lai Qinhui
• HUANG BAISHENG
• LI GUOQING
• ZHANG QING
• ZHAO YONGCHENG

Assignees

• 江西赣粤高速公路股份有限公司
• 江西省交通工程集团有限公司

Dates

Publication Date

20260508

Application Date

20250618

Claims (6)

1. 1. The utility model provides a prefabrication is assembled pier grouting and is connected structure, includes cushion cap (1) and prefabricated pier stud segment (2), the inside of cushion cap (1) and prefabricated pier stud segment (2) is equipped with reservation through-hole (3) of vertical intercommunication, and the inside of reservation through-hole (3) is equipped with steel reinforcement cage (4), a serial communication port, the top of cushion cap (1) is equipped with prefabricated slotted hole (101) with prefabricated pier stud segment (2) matched with, and the junction of two adjacent prefabricated pier stud segments (2) all prefabricates has location connection structure (5) of mutual gomphosis; The positioning connection structure (5) comprises positioning conical grooves (501) arranged at two ends of the prefabricated pier column section (2), a compression connection conical head (502) is arranged between the two opposite positioning conical grooves (501), and the compression connection conical head (502) is a rectangular pyramid; The inner walls of the reserved through holes (3) and the prefabricated slot holes (101) are prefabricated with connecting spiral convex ribs (301).
2. 2. The precast spliced pier grouting joint structure according to claim 1, wherein the cross section of the connecting spiral rib (301) is any one of a trapezoid, a semicircle or a rectangle.
3. 3. The prefabricated spliced pier grouting joint structure according to claim 1, wherein the connecting spiral ribs (301) are pore-forming corrugated pipes prefabricated on the inner walls of the reserved through holes (3) and the prefabricated slotted holes (101), and the pore-forming corrugated pipes are galvanized steel corrugated pipes.
4. 4. The precast spliced pier grouting joint structure according to claim 1, wherein the conical surface inclination angle of the positioning conical groove (501) is set to be 45 ° -60 °.
5. 5. The precast spliced pier grouting joint structure according to claim 1, wherein the centers of the compression connection conical head (502) and the precast pier stud segment (2) are provided with longitudinal through grouting channels (503).
6. 6. The precast spliced pier grouting joint structure according to claim 1, wherein the depth of the precast slot (101) is set to be 1.2 times the diameter of the precast pier segment (2), and a drainage guide groove (102) is provided at the bottom of the precast slot (101).

Description

Precast spliced pier grouting joint structure Technical Field The utility model relates to the technical field of piers, in particular to a prefabricated spliced pier grouting joint structure. Background In the construction of assembled bridges, the connection performance between bridge pier segments directly determines structural integrity and shock resistance. For example, china issued patent with the application number CN201820783328.9 discloses a prefabricated spliced pier grouting joint structure, which belongs to the technical field of bridge engineering. Including cushion cap, prefabricated pier stud segment and mortar bed course that excels in, the cushion cap is connected with prefabricated pier stud segment, prefabricated pier stud segment and prefabricated pier stud segment with the mortar bed course that excels in, the inside of cushion cap and prefabricated pier stud segment is opened there is the reservation through-hole group of vertical intercommunication, reservation through-hole both sides in the reservation through-hole group are equipped with the segment reinforcing bar, the circular stirrup first has been buried to the outer fringe of reservation through-hole group, the inside circular stirrup second that is equipped with vertical reinforcing bar and fixed vertical reinforcing bar of reservation through-hole, reservation through-hole intercommunication in the cushion cap has the advance thick liquid pipeline. The utility model has the advantages that the cylindrical reserved through holes are grouted to connect the prefabricated sections, the site setting up of templates and brackets is not needed, the construction progress is quickened, the multi-column grouting holes are adopted to connect, the number of reinforcing steel bars which can pass through the joint surface is large, so that partial concrete is continuous, the integrity of the prefabricated pier column is good, and the stress is more reliable. Although the multi-section prefabricated pier column sections can be assembled and connected, the end parts of the prefabricated pier column sections are directly contacted with the bearing platform, the two adjacent prefabricated pier column sections are directly butted with each other, the reinforcement cage is inserted and then grouted, the biting force of grouting material and the hole wall is not high, the stability is not high, and slippage can occur. Disclosure of utility model In order to solve the defects in the prior art, the utility model provides a prefabricated spliced pier grouting joint structure. In order to solve the technical problems, the utility model provides the following technical scheme: The utility model discloses a prefabricated spliced pier grouting joint structure which comprises a bearing platform and prefabricated pier column sections, wherein reserved through holes which are longitudinally communicated are formed in the bearing platform and the prefabricated pier column sections, a reinforcement cage is arranged in each reserved through hole, prefabricated slotted holes matched with the prefabricated pier column sections are formed in the top end of the bearing platform, positioning connection structures which are mutually embedded are prefabricated at the connecting positions of two adjacent prefabricated pier column sections, each positioning connection structure comprises positioning conical grooves which are formed in two end parts of the prefabricated pier column sections, a compression connection conical head is arranged between two opposite positioning conical grooves and is arranged into a rectangular pyramid, and connecting spiral ribs are prefabricated on the inner walls of each reserved through hole and each prefabricated slotted hole. As a preferable technical scheme of the utility model, the cross section of the connecting spiral convex rib is any one of trapezoid, semicircle or rectangle. As a preferable technical scheme of the utility model, the connecting spiral convex rib adopts a pore-forming corrugated pipe prefabricated on the inner walls of the reserved through holes and the prefabricated slotted holes, and the pore-forming corrugated pipe is a galvanized steel corrugated pipe. As a preferable technical scheme of the utility model, the cone inclination angle range of the positioning cone groove is set to be 45-60 degrees. As a preferable technical scheme of the utility model, the centers of the compression connection conical head and the prefabricated pier stud sections are provided with longitudinal through grouting channels. As a preferable technical scheme of the utility model, the depth of the prefabricated slot hole is set to be 1.2 times of the diameter of the prefabricated pier column section, and the bottom of the prefabricated slot hole is provided with a drainage guide groove. The beneficial effects of the utility model are as follows: According to the prefabricated spliced pier grouting joint structure, through the self-loc