Locally-replaceable bridge support and replacement method

A bridge support and partial technology, which is applied in the direction of bridges, bridge parts, bridge maintenance, etc., can solve the problems of large concrete, short service life of the main support core, and low practicability, so as to reduce the degree of damage, reduce maintenance costs, and not easily rusty effect

Active Publication Date: 2020-06-23
HEBEI BAOLI ENG EQUIP GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current bridge supports are a unified whole. When a certain part of it is damaged, it needs to be replaced as a whole. The maintenance cost is high and the practicability is low. Secondly, some parts are buried in the bridge concrete and need to be repaired. When the concrete is broken, the overall bridge support needs to break a large amount of concrete, which has a great impact on the bridge structure, and the service life of the main support core is short, resulting in more maintenance times, which is harmful to bridge maintenance personnel. more troublesome

Method used

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  • Locally-replaceable bridge support and replacement method
  • Locally-replaceable bridge support and replacement method
  • Locally-replaceable bridge support and replacement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: When the embedded steel plate A21 is damaged, it is necessary to use a slotting tool to break the bridge and take out the damaged embedded steel plate A21, because the embedded steel plate A21 is composed of the first steel plate 211 and the second steel plate 212, wherein Take one of them if it is damaged, and when taking out one of them again, rotate the movable steel pin 2122 so that the blocking piece 21221 can break away from the vertical groove 2112. After installing the new pre-embedded steel plate A21, block it with cement. Fill between the upper anchor bolt 23 and the cement with epoxy mortar.

Embodiment 2

[0048] Embodiment 2: When the main support core 12 is damaged, first, it is necessary to use an external hydraulic jack to slightly separate the bridge from the pier, use a steel plate to replace the support, and then pull the main support core 12 out of it, and second, loosen the locking bolts 112, separate the extruding block 113 from the supporting core 12, unscrew the lengthened locking bolt 15, and take out the main supporting core 12, if the main supporting core 12 has been deformed, then use the extruding block 113 to loosen back and forth, The main support core 12 is peeled off therefrom.

Embodiment 3

[0049] Embodiment 3: When the stainless steel plate 14 is damaged, use an external hydraulic jack to slightly separate the bridge from the pier. If the overall placement time is long, it is necessary to use the airflow generated by the air pump to separate the upper support plate 22 and the stainless steel plate. The dust and sand between 14 are blown away to prevent it from being hindered during the extraction process, and then the lengthened locking bolt 15 is unscrewed, and the stainless steel plate 14 is removed through the sliding of the chute A141, and a new one is replaced. Lengthening locking bolt 15 is screwed in, finishes changing.

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Abstract

The invention discloses a locally-replaceable bridge support. The locally-replaceable bridge support comprises a supporting mechanism, a bridge fixing mechanism and a pier fixing mechanism; the bridgefixing mechanism is arranged at the upper end of the supporting mechanism; the pier fixing mechanism is arranged at the lower end of the supporting mechanism; a protection box, a main supporting core, a guide rail and a stainless steel plate are connected through lengthened locking bolts; when a certain component is damaged, it only needs to unscrew the lengthened locking bolts and locally replaces the damaged part, integral replacement is not needed, and therefore, maintenance cost is greatly reduced; a sliding groove B, a polytetrafluoroethylene plate, a middle steel lining plate, a pressure-bearing rubber plate and a sealing ring are arranged in the main supporting core; the outer surface of the pressure-bearing rubber plate is wrapped with the sealing ring; and the sealing ring is a component made of a polyurethane material, has good waterproof performance, prevents rainwater from corroding the pressure-bearing rubber plate, and therefore, the service life of the pressure-bearingrubber plate can be prolonged, and working cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of bridge maintenance, in particular to a partially replaceable bridge support and a replacement method. Background technique [0002] A bridge is a large-scale structure used to cross obstacles. To be precise, it is a structure used to cross traffic routes or other facilities across natural or artificial obstacles. The bridge support is an important structural component that connects the upper structure and the lower structure of the bridge. , located between the bridge and the pad stone, it can reliably transmit the load and deformation (displacement and rotation angle) borne by the upper structure of the bridge to the lower structure of the bridge. It is an important force transmission device of the bridge. It has two fixed supports and movable supports Types of bearings commonly used in bridge engineering include: asphalt felt or flat bearings, plate rubber bearings, spherical bearings, steel bearings an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00E01D19/04
CPCE01D19/041E01D22/00
Inventor 丁凤景
Owner HEBEI BAOLI ENG EQUIP GRP CO LTD
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