Structure for reinforcing UHPC-NC interface bonding through H-shaped steel and manufacturing method

A UHPC-NC, interface bonding technology, applied in the direction of long-strip structural components, structural elements, building components, etc. for load-bearing, can solve problems such as insufficient bonding, improve bonding strength, and solve insufficient bonding , the effect of good mechanical properties

Inactive Publication Date: 2021-06-08
NANJING FORESTRY UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

It solves the problem of insufficient bonding of the UHPC-NC interface, and can better study the mechanical properties of UHPC-NC composite beams

Method used

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  • Structure for reinforcing UHPC-NC interface bonding through H-shaped steel and manufacturing method
  • Structure for reinforcing UHPC-NC interface bonding through H-shaped steel and manufacturing method

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Embodiment Construction

[0023] In order to have a deeper understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.

[0024] Referring to the accompanying drawings, in the example of the present invention, a structure using H-shaped steel to strengthen the bonding of the UHPC-NC interface is composed of a lower part of 20 cm to 30 cm UHPC1, an upper part of NC2 and two pieces of perforated H-shaped steel 3, and the inside of the UHPC-NC composite beam Two rows of perforated H-shaped steel 3 are arranged, the perforated position of the perforated H-shaped steel 3 is on the web plate, the diameter of the perforated hole is half the height of the web plate, and the distance between the two rows of perforated H-shaped steel 3 is 1 / 3 of the width of the beam ~1 / 2, the thickness of the concrete protective layer everywhere is not less than 5cm.

[0025]...

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Abstract

The invention belongs to the field of structural engineering, and particularly relates to a structure for reinforcing UHPC-NC interface bonding through H-shaped steel and a manufacturing method. The structure is composed of a lower UHPC (1) with the thickness of 20-30 cm, an upper NC (2) and two pieces of perforated H-shaped steel (3), wherein two rows of perforated H-shaped steel (3) are arranged in a UHPC-NC superposed beam, the perforating position of the perforated H-shaped steel (3) are formed in a web, the hole diameter of each hole is half of the height of the web, the distance between the transverse axes of the two rows of perforated H-shaped steel (3) is 1/3-1/2 of the width of the beam, and the thickness of a concrete protective layer at each position is not smaller than 5 cm. According to the structure, the perforated H-shaped steel (3) is used for connection between UHPC-NC connection interfaces, and a concrete tenon is formed on the UHPC-NC interface, so that the bonding strength of the UHPC-NC interface is improved, cooperative work of two materials of the UHPC-NC superposed beam is facilitated, and excellent characteristics of the UHPC-NC superposed beam are fully exerted.

Description

technical field [0001] The invention belongs to the field of structural engineering, and specifically relates to a UHPC-NC (Ultra-High Performance Concrete and Normal Concrete, Ultra-High Performance Concrete, ultra-high performance concrete, referred to as: UHPC, Normal Concrete, or ordinary concrete, which is reinforced by H-shaped steel. Abbreviation: NC) interface bonding structure and manufacturing method. Background technique [0002] In the field of structural engineering, many structures are ordinary reinforced concrete. With the development of the times, people have put forward higher requirements for modern structures, making the current engineering structures develop in a higher, longer and more complex direction. However, under the influence of environment, man-made and itself, the durability and safety of ordinary concrete will seriously decline, which obviously cannot meet the requirements of modern structures. [0003] Ultra-high performance concrete (UHPC f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04C3/293
CPCE04C3/293
Inventor 端茂军宋粲薛锦春李国芬孙旺
Owner NANJING FORESTRY UNIV
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