Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultra-high performance concrete slab seam connecting structure and construction method thereof

An ultra-high performance, concrete slab technology, applied in building components, building structures, building thermal insulation materials, etc. seam size and other issues, to achieve good economic benefits, avoid disease problems, and reduce the weight of the structure

Inactive Publication Date: 2018-02-09
FUZHOU UNIV
View PDF5 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the thin ultra-high performance concrete slab reduces the joint size between the slabs, so that some existing connection structures cannot meet the design requirements well, especially the slab structure subjected to bending and tension, in the transmission of bending moment At the same time, what needs to be transmitted more is the tension, and the unsuitable connection structure will easily cause cracks at the seams
However, the bonding interface between threaded steel bars and concrete commonly used in engineering will have obvious stress concentration, which is a sensitive position in structural design, and it also affects the popularization and application of thin-layer ultra-high performance concrete in the field of building structures and long-span bridges , how to solve the existing engineering practice problems and improve the connection performance at the seam is the focus of the research

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultra-high performance concrete slab seam connecting structure and construction method thereof
  • Ultra-high performance concrete slab seam connecting structure and construction method thereof
  • Ultra-high performance concrete slab seam connecting structure and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: as Figure 1~2 As shown, a joint connection structure of ultra-high performance concrete slabs includes two ultra-high performance concrete slabs 1 located on the same plane, and there is a cast-in-place joint in the middle of the two ultra-high performance concrete slabs 1, and each ultra-high performance concrete slab There is a high-strength steel wire mesh 2 inside the slab, and the side of the high-strength steel wire mesh 2 facing the cast-in-place joint passes through the same side of the ultra-high performance concrete slab and extends into the cast-in-place joint, and the protruding parts of the high-strength steel wire mesh on both sides pass through A high-strength steel wire mesh is connected together, and an ultra-high-performance concrete joint plate 3 connecting the ultra-high-performance concrete slabs on both sides is poured in the cast-in-place joint; the structure has high strength, excellent durability, and reasonable force. In line wit...

Embodiment 2

[0029] Embodiment 2: as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the ultra-high performance concrete slab in this embodiment is a cast-in-place concrete slab, that is, two ultra-high-performance concrete slabs 1 are close together, and there is no cast-in-place joint.

[0030] In this embodiment, among two adjacent ultra-high-performance concrete slabs, the high-strength steel wire mesh of one of them extends into the other ultra-high-performance concrete slab 1 and is stacked with its high-strength steel mesh and fixed by binding and welding Or the equipment is connected and fixed; when casting on site, one of the ultra-high performance concrete slabs is poured first, and then another ultra-high performance concrete slab is poured. The high-strength steel wire mesh on the ultra-high performance concrete slab poured first extends a certain length It is stacked with the high-strength steel wire mesh on the post-cast ultra-high performan...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
compressive strengthaaaaaaaaaa
flexural strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to an ultra-high performance concrete slab seam connecting structure and a construction method thereof. The ultra-high performance concrete slab seam connecting structure comprises two ultra-high performance concrete slabs positioned in the same plane, wherein a cast-in-situ seam is left in the middle between the two ultra-high performance concrete slabs; a high-strength steel wire mesh is arranged in each ultra-high performance concrete slab; one side, facing the cast-in-situ seam, of the high-strength steel wire mesh penetrates out from the lateral part of the same sideof the ultra-high performance concrete slab and extends into the cast-in-situ seam; the extending-out parts of the high-strength steel wire meshes at two sides are connected through a high-strength steel wire mesh sheet; and an ultra-high performance concrete slab seam plate for connecting the ultra-high performance concrete slabs at two sides is cast in the cast-in-situ seam. The ultra-high performance concrete slab seam connecting structure has the advantages that the stress is reasonable; the strength is high; the structure dead weight can be greatly reduced; the mechanical property is excellent; the durability is high; the problem of damage of concrete slabs and concrete slab seam regions is effectively solved; the capability of high strength, high toughness and crack resistance of the ultra-high performance concrete is fully realized; and great practical values and good economic benefits are realized in the engineering practice.

Description

technical field [0001] The invention relates to an ultra-high-performance concrete slab joint connection structure and a construction method thereof, belonging to the field of civil engineering. Background technique [0002] Ultra-high performance concrete (UHPC) is a high-strength, high-modulus, high-ductility ultra-high-performance fiber-reinforced cement composite material, also known as reactive powder concrete (RPC), which is composed of cement, sand, active admixtures, Steel fiber, high-efficiency water reducer and water are configured according to the theory of maximum density, which minimizes the internal defects of the material. Compared with ordinary concrete, UHPC has almost zero porosity, high impermeability coefficient, and excellent ultra-high mechanical properties. Usually UHPC has a compressive strength of not less than 130MPa and an axial tensile strength of not less than 8MPa, and the tensile strength can be further enhanced by adding a certain volume of s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/682
CPCE04B1/68
Inventor 赵秋杜阳许家斌
Owner FUZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products