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Quick-dismantling method for highly-suspended steel concrete structure under cover plate

A technology for concrete structures and concrete blocks, applied in building construction, building maintenance, construction, etc., can solve problems such as affecting the safety and convenience of concrete demolition, unable to hold concrete blocks to be demolished, and inability to implement demolition operations, etc. Achieving the effect of high safety and low social impact

Inactive Publication Date: 2018-09-04
SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of trestles and cover plates on the foundation pit, when the supporting height is large, conventional construction machinery cannot drag the concrete block to be demolished, which greatly affects the safety and convenience of concrete demolition, and even makes the demolition operation impossible

Method used

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  • Quick-dismantling method for highly-suspended steel concrete structure under cover plate
  • Quick-dismantling method for highly-suspended steel concrete structure under cover plate
  • Quick-dismantling method for highly-suspended steel concrete structure under cover plate

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] The invention provides a technology for dismantling a high suspended reinforced concrete structure under a cover plate. Park the crane on the top of the cover (or place it in the adjacent area, just ensure that it has the lifting capacity). Holes are drilled at regular intervals on the cover plate (full cover cover, i.e. fully enclosed cover or partially covered cover, i.e. cover excavated underground passage). The holes are facing the center of the concrete structure to be demolished. The lifting capacity, construction convenience and economy are determined, generally greater than 2m, and the diameter is suitable for the crane cable below, generally 20cm; at the same time, directly below the hole on the cover plate, drill holes for the concrete structure to be removed, drill The diameter of the hole should be able to pass through the steel cabl...

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Abstract

The invention discloses a quick-dismantling method for a highly-suspended steel concrete structure under a cover plate. The quick-dismantling method is characterized in that a hole is excavated in thecover plate at every certain interval, and the holes directly face the concrete structure needing to be dismantled; meanwhile, the concrete structure needing to be dismantled is drilled under the holes of the cover plate, and the diameter of drilled holes is desirable to allow a steel cable to be capable of penetrating through smoothly; before the concrete structure is cut, a hoist cable of a hoist sequentially penetrates through the holes and the drilled holes from top to bottom, concrete blocks to be cut form a stable system, and after the concrete blocks are cut, and the concrete blocks are hoisted through a crane and then are slowly placed on an operating face. According to the quick-dismantling method for the highly-suspended steel concrete structure under the cover plate, structuredismantling construction is conducted under the cover plate, noise, water and flying dust pollution cannot occur, and the social influence is small.

Description

technical field [0001] The invention relates to the demolition technology of the concrete structure under the ground or under the cover slab, in particular to a method for quickly dismantling the high-suspended steel concrete structure under the cover slab, specifically a method for removing reinforced concrete supports of an open-cut tunnel under a trestle bridge or a structural slab. Background technique [0002] At present, with the influence of urban development on the landscape, underground passages are more and more favored by engineering decision-makers as the preferred solution for road traffic in densely populated and land-scarce areas. [0003] There are various designs and construction schemes for underground passages, such as shield tunneling method, open cut method and cover-excavation method (including cover-excavation operation and cover-excavation operation). The shield tunneling method is generally suitable for small and medium-sized section, deep buried, an...

Claims

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Application Information

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IPC IPC(8): E04G23/08
CPCE04G23/08
Inventor 刘发前
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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