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Deep foundation pit supporting structure as well as construction method and demolishing method thereof

A supporting structure and construction method technology, applied in the direction of infrastructure engineering, excavation, construction, etc., can solve the problems of difficult construction, slow construction speed, long construction period, etc., and achieve low construction difficulty, fast construction speed and short construction period Effect

Active Publication Date: 2013-08-07
JUJIANG CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned operation methods have certain defects in terms of safety, quality, progress, cost and environmental protection. Blasting demolition will cause more flying stones due to the greater blasting force during construction, and it is impossible to ensure that construction personnel and surrounding buildings It is safe and noisy; mechanical demolition is costly and has many potential safety hazards; manual demolition is slow in construction speed and has a long construction period; post-drilling static blast demolition is costly and difficult in construction

Method used

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  • Deep foundation pit supporting structure as well as construction method and demolishing method thereof
  • Deep foundation pit supporting structure as well as construction method and demolishing method thereof
  • Deep foundation pit supporting structure as well as construction method and demolishing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Design the supporting structure of the entire deep foundation pit, prepare a safe construction plan, and discuss the plan with experts; design the static explosion reserved groove 4 with a diameter of 30 mm, a groove depth of 700 mm, and a groove spacing of 250 mm; select a number of PVC pipes with an outer diameter of 30 mm, The length of the intercepted PVC pipe is 800-900 mm, and one end of the PVC pipe is sealed with waterproof tape; several PVC pipes are tied to the stirrups of the support beam according to the designed groove depth of 700 mm and the groove spacing of 250 mm in step 2, and the tape is closed One end is down; according to the safety construction plan in step 1, the concrete pouring of the entire deep foundation pit support structure is carried out; after the concrete solidification time is 120 minutes, turn the PVC pipe 90 degrees, and then pull out the PVC pipe to form a static explosion reserved groove 4 . The concrete is fully set.

[0041] The ...

Embodiment 2

[0043] Design the supporting structure of the entire deep foundation pit, compile a safe construction plan, and expertly demonstrate the plan; design the static explosion reserved groove 4 with a diameter of 40 mm, a groove depth of 800 mm, and a groove spacing of 300 mm; select a number of PVC pipes with an outer diameter of 40 mm, The length of the intercepted PVC pipe is 900-1000 mm, and one end of the PVC pipe is sealed with waterproof tape; several PVC pipes are tied to the stirrups of the supporting beam according to the designed groove depth of 800 mm and the groove spacing of 300 mm in step 2, and the tape is closed One end is down; according to the safety construction plan in step 1, the concrete pouring of the entire deep foundation pit support structure is carried out; after the concrete solidification time is 150 minutes, turn the PVC pipe 180 degrees, and then pull out the PVC pipe to form a static explosion reserved groove 4 . The concrete is fully set.

[0044]...

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Abstract

The invention relates to the technical field of architectural structures, in particular to a deep foundation pit supporting structure which comprises a support beam and a lattice column, wherein the support beam and the lattice column are fixedly connected; the support beam comprises a support beam body, a stirrup arranged inside the support beam body and a plurality of static explosion preformed grooves; and the plurality of the static explosion preformed grooves are formed in the support beam body. The static explosion preformed grooves which can be filled with a static explosive are preformed in advance to facilitate final demolishing, so that any demolishing method of explosive demolition, mechanical demolition, artificial demolition, post drilling static explosive demolition and the like is not needed in a demolishing process, and the condition that the safety of a construction worker and a surrounding building cannot be guaranteed due to more flying stones produced by a larger explosive force during construction is prevented, and the noise is small, the cost is low, the construction speed is high, the construction period is short, and the construction difficulty is small.

Description

Technical field: [0001] The invention relates to the technical field of building structures and construction methods thereof, in particular to a deep foundation pit support structure and its construction method and removal method. Background technique: [0002] With the continuous development of urbanization, the density of urban buildings is increasing. In order to ensure the safety and normal operation of nearby buildings, underground pipelines, and urban traffic, deep foundation pit support construction is generally required during construction in densely built areas. Deep foundation pits are temporary structures set up during construction. An underground space is excavated downwards from the ground, and a vertical retaining enclosure structure is generally arranged around it. The enclosure structure is generally a slab (pile) wall structure with a certain insertion depth under the base of the excavation surface. The slab (pile) wall There are cantilever type, single sup...

Claims

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Application Information

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IPC IPC(8): E02D17/04
Inventor 郑刚王升朱树波蔡会平
Owner JUJIANG CONSTR GRP