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WO-2026091604-A1 - PREFABRICATED COMPONENT CONNECTION NODE

WO2026091604A1WO 2026091604 A1WO2026091604 A1WO 2026091604A1WO-2026091604-A1

Abstract

A prefabricated component connection node, comprising a prefabricated slab (1) and a prefabricated beam (2), wherein one of a first groove (3) and a first protrusion (4) is provided at one end of the prefabricated slab (1); the other of the first groove (3) and the first protrusion (4) is provided at one end of the prefabricated beam (2); one end of the prefabricated beam (2) is connected to one end of the prefabricated slab (1), and the prefabricated slab (1) is perpendicular to the prefabricated beam (2); and the first groove (3) matches the first protrusion (4) in shape, the first protrusion (4) is inserted into the first groove (3), and the directions of length of the first groove (3) and the first protrusion (4) both extend in the direction of height of the prefabricated slab (1) or the prefabricated beam (2). By providing the first protrusion (4) and the first groove (3), it is possible to effectively prevent leakage of grout at the connection node of the prefabricated slab (1) and the prefabricated beam (2), and also achieve low manufacturing difficulty and low construction difficulty by means of a simple insertion, thereby effectively improving the construction efficiency and improving the project quality.

Inventors

  • LI, KEJUN
  • HE, HONG
  • ZAHNG, Ziyu
  • TAO, Changchen
  • CHEN, CHANGSHENG
  • LI, WENBO
  • CHEN, CHEN
  • REN, YING

Assignees

  • 中建科工集团有限公司

Dates

Publication Date
20260507
Application Date
20250627
Priority Date
20241104

Claims (10)

  1. A prefabricated component connection node, characterized in that it comprises: The precast slab (1) has one of a first groove (3) and a first protrusion (4) at one end; A precast beam (2) is provided at one end with one of the first groove (3) and the first protrusion (4). One end of the precast beam (2) is connected to one end of the precast slab (1), and the precast slab (1) is perpendicular to the precast beam (2). The shape of the first groove (3) and the first protrusion (4) are adapted to each other and the first protrusion (4) is inserted into the first groove (3). The length direction of the first groove (3) and the first protrusion (4) extends along the height direction of the precast slab (1) or the precast beam (2).
  2. According to claim 1, the precast component connection node is characterized in that the first groove (3) or the first protrusion (4) is disposed on the side of the precast plate (1), and the first groove (3) or the first protrusion (4) penetrates the upper and lower surfaces of the precast plate (1). The first groove (3) or the first protrusion (4) is disposed on the end face of the precast beam (2), and the first groove (3) or the first protrusion (4) penetrates the upper and lower surfaces of the precast beam (2).
  3. According to claim 1, the precast component connection node is characterized in that the first groove (3) is disposed on the precast plate (1) and the first protrusion (4) is disposed on the precast beam (2).
  4. According to claim 1, the prefabricated component connection node is characterized in that the first groove (3) and the first protrusion (4) have rectangular cross sections along the direction perpendicular to their own length.
  5. According to claim 4, the prefabricated component connection node is characterized in that the side length of the first groove (3) and the first protrusion (4) along the cross section perpendicular to their own length direction is 10mm.
  6. According to claim 1, the prefabricated component connection node is characterized in that the first groove (3) and the first protrusion (4) are both semi-circular in cross-section along the direction perpendicular to their own length.
  7. According to claim 1, the precast component connection node is characterized in that when the top surface of the first protrusion (4) abuts against the bottom surface of the first groove (3), the side surface of the precast plate (1) abuts against the end face of the precast beam (2).
  8. The prefabricated component connection node according to any one of claims 1-7 is characterized in that it further includes a second protrusion (6) and a second groove (5), the second protrusion (6) being disposed on the top surface of the first protrusion (4), the second groove (5) being disposed on the bottom of the first groove (3), and the second protrusion (6) being inserted into the second groove (5).
  9. According to claim 8, the precast component connection node is characterized in that the first protrusion (4) and the second protrusion (6) are both made of concrete.
  10. According to claim 8, the prefabricated component connection node is characterized in that the first protrusion (4) and the second protrusion (6) are both made of steel.

Description

Precast component connection nodes Cross-reference of related applications This application claims priority to Chinese Patent Application No. 202422679952.2, filed on November 4, 2024, entitled "Prefabricated Component Connection Node", the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of prefabricated construction technology, specifically to a prefabricated component connection node. Background Technology Prefabricated concrete buildings refer to concrete structures designed and constructed primarily using precast reinforced concrete components produced in factories, assembled on-site. Some prefabricated buildings utilize precast components as their main structural elements, which are then connected on-site using cast-in-place concrete to form a monolithic prefabricated structure. Prefabricated concrete buildings offer advantages such as rapid construction speed, suitability for winter construction, high production efficiency, good product quality, and reduced material waste. In existing prefabricated concrete structures, composite beams and composite slabs are widely used. At the connection points between composite beams and slabs, leakage prevention measures are required. Typically, PE rods are inserted after pouring to prevent leakage. However, this method is prone to leakage during pouring, affecting the quality of the project. Summary of the Invention In view of this, this application provides a precast component connection node to solve the problem of easy grout leakage at the connection between existing composite beams and composite slabs. In a first aspect, this application provides a prefabricated component connection node, a prefabricated slab, one end of which is provided with one of a first groove and a first protrusion; A precast beam has one end provided with the first groove and the other of the first protrusion. One end of the precast beam is connected to one end of the precast slab, and the precast slab is perpendicular to the precast beam. The shape of the first groove and the first protrusion are adapted to each other, and the first protrusion is inserted into the first groove. The length direction of the first groove and the first protrusion both extend along the height direction of the precast slab or the precast beam. Beneficial effects: One end of the precast slab at the precast component connection node is provided with one of a first groove and a first protrusion, and one end of the precast beam is provided with the other of the first groove and a first protrusion. When connecting the precast slab and the precast beam, the first protrusion is inserted into the first groove, and the first protrusion and the first groove form multiple sealing surfaces to prevent the leakage of concrete grout. By setting the first protrusion and the first groove, grout leakage at the connection node between the precast slab and the precast beam can be effectively prevented. Furthermore, the manufacturing and construction are simple, requiring only simple insertion, which effectively improves construction efficiency and project quality. In one optional embodiment, the first groove or the first protrusion is disposed on the side of the precast slab, and the first groove or the first protrusion penetrates the upper and lower surfaces of the precast slab. The first groove or the first protrusion is disposed on the end face of the precast beam, and the first groove or the first protrusion penetrates the upper and lower surfaces of the precast beam. Beneficial effects: The first groove or the first protrusion is set on the side of the precast slab and on the end face of the precast beam, so that the first groove and the first protrusion can complete the vertical setting of the precast slab and the precast beam. The first groove or the first protrusion penetrates the upper and lower surfaces of the precast slab or the precast beam, so that the first groove and the first protrusion form a complete and continuous sealing surface, effectively improving the sealing effect. In one alternative embodiment, the first groove is disposed on the precast slab, and the first protrusion is disposed on the precast beam. Beneficial effects: Setting the first groove in the precast slab facilitates the transportation of the precast slab, allowing multiple precast slabs to be stacked together in the vertical direction for transportation, avoiding damage to the first protrusion during transportation, which would affect the use of the precast slab and save construction costs. In one alternative embodiment, both the first groove and the first protrusion have rectangular cross-sections along their length directions. Beneficial effects: The cross-sections of the first groove and the first protrusion along the direction perpendicular to their own length are both set as rectangles, which is convenient to process and easy to construct. It is convenient to insert th