Device for reinforcing UHPC-NC interface bonding through split bolts and manufacturing method

A technology of UHPC-NC and pull bolts, which is applied in the direction of erection/assembly of bridges, buildings, bridge construction, etc., can solve problems such as insufficient bonding, and achieve good mechanical properties

Inactive Publication Date: 2021-06-08
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Device for reinforcing UHPC-NC interface bonding through split bolts and manufacturing method
  • Device for reinforcing UHPC-NC interface bonding through split bolts and manufacturing method
  • Device for reinforcing UHPC-NC interface bonding through split bolts 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] Please refer to the attached figure 1 ~ attached image 3 , in the example of the present invention, a device for strengthening the bonding of UHPC-NC interface by using a pull bolt, including a high-quality steel plate 1 and a pull bolt 2, the high-quality steel plate 1 is selected as the fixture at both ends of the pull bolt 2, and the high-quality steel plate 1 Open a hole on the central axis in the length direction for inserting the tension bolt 2, insert the cast steel gasket 3 on the tension bolt 2 on both sides of the opening of the high-quality steel plate 1, and use the nut 4 to connect the high-quality steel plate 1 and the tension bolt 2 Fix and tighten, two high-quality steel plates are poured horizontally in t...

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Abstract

The invention belongs to the field of structural engineering, and particularly relates to a device for reinforcing UHPC-NC interface bonding through split bolts and a manufacturing method. The device comprises a high-quality steel plate (1) and the split bolt (2), and is characterized in that the high-quality steel plate (1) is selected as a fixture at two ends of the split bolt (2), the split bolt (2) adopts a round steel bolt with two ends threaded, a hole is formed in the central axis of the high-quality steel plate (1) in the length direction, the split bolt (2) is inserted into the hole, and cast steel gaskets (3) penetrate through the split bolt (2) on two sides of the hole of the high-quality steel plate (1). And the high-quality steel plate (1) and the split bolt (2) are fixed and tightened by nuts (4). The high-quality steel plates (1) in the UHPC-NC beams are connected through the split bolt (2), the bonding strength of the UHPC-NC interface is improved, cooperative work of the two materials of the UHPC-NC superposed beam is facilitated, and the excellent characteristics of the UHPC-NC superposed beam are fully played.

Description

technical field [0001] The invention belongs to the technical 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, ie Ordinary concrete, referred to as: NC) interface bonding device and manufacturing method. Background technique [0002] Ultra-high performance concrete, referred to as UHPC (Ultra-High Performance Concrete), also known as reactive powder concrete (RPC, Reactive Powder Concrete), the incorporation of active ingredient silica fume and lower water-cement ratio can greatly reduce the Defects (voids and microcracks, etc.), thus obtaining excellent mechanical properties and durability. UHPC has high tensile strength, flexural strength, and ultra-high fracture capacity. At present, the compressive strength of UHPC is greater than 150MPa, and the tensile strength is greater than 5MPa, which a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 端茂军薛锦春宋粲李国芬徐绍斌
Owner NANJING FORESTRY UNIV
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