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Prestressed Prestressed Prefabricated Concrete Node Surface Connection Structure

A connecting structure and assembled technology, which is applied in the direction of building structure and construction, can solve the problems of reducing structural stability and service life, and achieve the effect of improving shear force transmission capacity, increasing contact area, and reducing concrete compressive stress

Active Publication Date: 2018-11-23
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the action of bending moment, the components rotate with each other, openings will be formed at the connecting section, and the mutual rotation of the connected components at the connecting surface makes the section compression area smaller, making it easier for the outer edge of the component compression area to reach the ultimate compressive strain or ultimate compressive strength, causing damage or destruction of prefabricated components, reducing the stability and service life of the structure

Method used

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  • Prestressed Prestressed Prefabricated Concrete Node Surface Connection Structure
  • Prestressed Prestressed Prefabricated Concrete Node Surface Connection Structure
  • Prestressed Prestressed Prefabricated Concrete Node Surface Connection Structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] see figure 2 , a prestressed prefabricated concrete node curved surface connection structure, including a prefabricated column 1, a left prefabricated beam 2-1, a right prefabricated beam 2-2, a left node outrigger 6-1, and a right node outrigger 6-2; The left node outrigger 6-1 and the right node outrigger 6-2 are symmetrically arranged on the left and right sides of the prefabricated column 1, and the left node outrigger 6-1, the right node outrigger 6-2 and the precast column 1 Integral molding structure; the left node outrigger 6-1 is connected with the left prefabricated beam 2-1, and the right node outrigger 6-2 is connected with the right prefabricated beam 2-2;

[0040] The outrigger 6-1 at the left node and the outrigger 6-2 at the right node are variable-section structures. The end face of the beam connection is concave;

[0041] The connecting end surface of the left prefabricated beam 2-1 and the left node outrigger 6-1 is a convex surface, which is equal...

Embodiment 2

[0046] see image 3 , taking a single-story single-span planar frame structure as an example. A prestressed prefabricated concrete node curved surface connection structure, including a left prefabricated column 1-1, a right prefabricated column 1-2, a left node outrigger 6-1, a right node outrigger 6-2 and a prefabricated beam 2, left The precast column 1-1 is connected to one end of the precast beam 2 through the left node outrigger 6-1, and the right precast column 1-2 is connected to the other end of the precast beam 2 through the right node outrigger 6-2; the left precast column 1 -1 is integrally formed with the left node outrigger 6-1, and the right prefabricated column 1-2 is integrally formed with the right node outrigger 6-2;

[0047] The outriggers at the left and right nodes are of variable cross-section structure, the cross-section at the connection with the left and right prefabricated columns is large, the cross-section at the connection with the prefabricated b...

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Abstract

The invention discloses a prestressed fabricated concrete joint curved surface connecting structure which comprises prefabricated columns and prefabricated beams. Joint overhanging arms are arranged at joints of the prefabricated columns and the prefabricated beams, each joint overhanging arm is of a variable-section structure, sections at the joints of the joint overhanging arms and the prefabricated columns are large while those at the joints of the joint overhanging arms and the prefabricated beams are small, and end faces connected with the prefabricated beams are concave surfaces; connecting end faces of the prefabricated beams and the joint overhanging arms are convex surfaces, and the convex surfaces and the concave surfaces on the joint overhanging arms are equal in curvature. Prefabricated beams prestressed rebars sequentially penetrate prestressed rebar holes in the prefabricated beams, the joint overhanging arms and the prefabricated columns to be pre-tightened to connect the prefabricated beams, the joint overhanging arms and the prefabricated columns to form a whole. The prestressed fabricated concrete joint curved surface connecting structure is stable in structure and long in service life.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a prestressed assembled concrete node curved surface connection structure. Background technique [0002] Prestressed connection is a main connection method in prefabricated structures. In the construction process, it has the advantages of no wet operation and fast assembly speed; in terms of seismic performance, it has the advantages of high connection strength and strong self-resetting ability. Prestressed prefabricated concrete structures have been widely used. [0003] For precast concrete structures assembled by prestressing, the components are only connected by prestressed preloading. Under the action of bending moment, the components rotate with each other, openings will be formed at the connecting section, and the mutual rotation of the connected components at the connecting surface makes the section compression area smaller, making it easier for the outer ed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/21E04B1/22
CPCE04B1/21E04B1/22
Inventor 蒲武川刘长城谷倩李琪戴枫禹
Owner WUHAN UNIV OF TECH
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