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Accurate control device for high-speed railway bridge pier column steel bar protective layer

A steel protective layer, high-speed railway technology, applied in bridges, bridge parts, bridge construction and other directions, can solve the problems of difficult control of concrete protective layer, affecting the construction quality of piers and columns, and achieves easy installation and disassembly, low production cost, and remarkable effect. Effect

Pending Publication Date: 2019-09-06
CHINA RAILWAY 21TH BUREAU GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the defects that the concrete protective layer is difficult to control in the current bridge pier body construction and affects the overall construction quality of the pier column, a precise control device for the steel bar protective layer of the high-speed railway bridge pier column is disclosed

Method used

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  • Accurate control device for high-speed railway bridge pier column steel bar protective layer
  • Accurate control device for high-speed railway bridge pier column steel bar protective layer
  • Accurate control device for high-speed railway bridge pier column steel bar protective layer

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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with accompanying drawing:

[0013] Two straight-shaped skeletons 1 and two arc-shaped skeletons 2 are fixedly connected at intervals by connecting bolts 4 to form an arc-shaped spacer skeleton, and two straight-shaped skeletons 1 are respectively provided with two inner and outer straight splints 5 at two places, Two arc-shaped fixed splints 5 inside and outside are respectively arranged at one place on the two arc-shaped skeletons 2, and the inner and outer fixed splints 5 are fixed by tightening bolts 6, and the middle parts of the two straight-shaped skeletons 1 are respectively bent inward to leave drainage grooves. Limiting slots 3 are set on the inner side of the frame according to the steel bar intervals required by the design. The limiting slots 3 are V-shaped, and steel wire ropes 7 are fixed on the limiting frame.

[0014] When using the present invention, the straight frame and th...

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Abstract

The invention discloses an accurate control device for a high-speed railway bridge pier column steel bar protective layer. According to the accurate control device, two straight skeletons are connected with two arched skeletons to form an arc-shaped limiting skeleton, and an inner straight fixing clamping plate and an outer straight fixing clamping plate and an inner arc-shaped fixing clamping plate and an outer arc-shaped clamping plate are arranged on the straight skeletons and arc-shaped skeletons correspondingly; the middle parts of the straight skeletons bend inwards correspondingly to reserve drainage grooves, and a V-shaped or U-shaped limiting groove is formed in the inner side of the limiting skeleton, and it is ensured that after the limiting skeleton is connected as a whole, anouter bridge pier column pre-embedded steel bar is enabled to be completely clamped in the limiting groove of the limiting skeleton to achieve an self-locking effect; and the pre-embedded steel bar iscorrected vertically by a steel wire rope, turnbuckles and shackles which are fixed on the limiting skeleton, so that the verticality of pre-embedded steel bars fully meets a design standard, and itis ensured that the thickness error of the concrete protective layer reaches -3, +5 mm, and the spacing error of the steel bars reaches -3, +3 mm, and the accurate control device for the high-speed railway bridge pier column steel bar protective layer is ideal.

Description

technical field [0001] The invention relates to a high-speed railway bridge pier column construction device, in particular to a high-speed railway bridge pier column steel bar protective layer precision control device, which belongs to the field of road and bridge construction. Background technique [0002] High-speed railway bridge piers are the main force-bearing components that transmit the upper load of the bridge and the dynamic load of the train. Important, it will directly affect the durability and safety of reinforced concrete structure engineering, and the control of the steel protection layer of bridge pier columns mainly depends on the distance between the vertical steel bars of bridge pier columns. Physical quality inspection and inspection items, the acceptance standards for railway bridge piers are constantly improving, the situation of red line management inspection is severe, and the thickness of the protective layer of bridge pier columns is the focus of ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00E01D19/02
CPCE01D19/02E01D21/00
Inventor 张志强张宁军冯建军满伟德宋鹏华李涛
Owner CHINA RAILWAY 21TH BUREAU GROUP
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