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Water-pressure blasting demolition technology for box bridge

A technology of hydraulic blasting and bridges, which is applied in bridges, bridge maintenance, bridge reinforcement, etc., can solve the problem of fewer cases of box bridges, reduce collapse vibration, save secondary crushing time and crushing costs, and indirect benefits outstanding effect

Inactive Publication Date: 2015-07-22
QINGDAO FIRST MUNICIPAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hydraulic blasting is a new type of controlled blasting technology developed in recent decades. It has a wide range of applications in demolition blasting, but there are few examples of applying this technology to box bridge demolition.

Method used

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  • Water-pressure blasting demolition technology for box bridge
  • Water-pressure blasting demolition technology for box bridge
  • Water-pressure blasting demolition technology for box bridge

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing, the present invention will be further specifically described by embodiment:

[0036] Demolition of Jiaozhou Bay Expressway Huantaiyuan Road Interchange by Hydraulic Blasting

[0037] Such as figure 1 As shown, the specific steps of this embodiment are firstly the construction preparation and the entry of personnel and equipment, followed by the measurement and release points, construction in the box, waterproof plugging, placement and fixing of the medicine bag, network connection, water injection, network merging, Protection, warning detonation, auxiliary crushing, and finally clearing.

[0038] bridge structure

[0039] The upper part of the overpass is a cast-in-place concrete box girder structure, and the lower part is a pier column plus cast-in-situ pile structure. The main body of the bridge is low on both sides and high in the middle, with a total of 7 spans, each span 35 meters long, and the main bridge is 245 me...

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Abstract

The invention provides a water-pressure blasting demolition technology for a box bridge. A spider web type explosive bag is hung in the box bridge, water is injected into the box bridge, and then water-pressure blasting is performed. The water-pressure blasting demolition technology for the box bridge has few application examples in domestic blasting demolition and is applied to unequal-wall-thickness bridge structures for the first time. The technological achievements of environment-friendly water-pressure blasting of the box bridge provide reference bases for future similar projects, the technological achievements of water-pressure blasting demolition of the box bridge structure are achieved, and the technological development of the blasting industry of China is promoted.

Description

technical field [0001] The invention relates to the construction field, in particular to a hydraulic blasting demolition process for a box bridge. Background technique [0002] With the acceleration of urban construction in our country, there are more and more urban bridge construction, reconstruction and demolition projects. For the demolition of bridges in the past, the demolition method is usually mechanical demolition or drilling and blasting the columns and other parts before secondary crushing. This demolition method is difficult to dismantle, and the dust pollution is serious and consumes a lot of people Financial and material resources, long construction period. The overpass bridges in urban traffic bear heavy traffic pressure, and improving the efficiency and safety of demolition is the goal that everyone pursues unanimously. [0003] Hydraulic blasting is a new type of controlled blasting technology developed in recent decades. It is widely used in demolition bla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D24/00
CPCE01D22/00
Inventor 范学臣李川刘学庆马健张晓龙
Owner QINGDAO FIRST MUNICIPAL ENG CO LTD
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