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Non-dismantling prefabricated concrete pile protecting die plate and construction method

A technology of prefabricated concrete and construction methods, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of shortened construction period, water seepage around the pile foundation, high construction cost, etc., and achieve shortened construction period, high construction safety, The effect of construction quality assurance

Active Publication Date: 2016-10-26
浙江长兴市政建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Neck shrinkage, hole collapse, etc. Traditional pile foundation construction is prone to construction defects such as neck shrinkage and hole collapse due to the influence of mud properties and soil conditions;
[0005] (2) Water seepage around the pile foundation poses safety hazards
During the construction of manual excavated piles, it is required to lower the groundwater level to at least 0.5m below the construction surface. A small amount of water is still unavoidable during the construction process, which endangers the safety of construction personnel; when the construction quality of manual excavated pile lining cannot be guaranteed, There is a risk of hole collapse;
[0006] (4) High construction cost
The continuous increase of labor cost leads to the continuous increase of construction cost;
[0007] (5) Long construction period
All construction needs to be carried out on site, including support, excavation, pouring maintenance, and form removal, which is not conducive to shortening the construction period

Method used

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  • Non-dismantling prefabricated concrete pile protecting die plate and construction method
  • Non-dismantling prefabricated concrete pile protecting die plate and construction method
  • Non-dismantling prefabricated concrete pile protecting die plate and construction method

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Embodiment

[0051] Such as Figure 1 to Figure 4 As shown, a precast concrete pile protection formwork without demolition includes a precast concrete protective layer 1 with a circular cross section and a plurality of concave arc-shaped concrete protruding blocks 2, and a plurality of concave arc-shaped concrete protruding blocks 2 are protected along the precast concrete The inner circumferential surface of layer 1 is symmetrically arranged at intervals, and is prefabricated with the precast concrete protective layer 1 at one time. The long hole 3 is provided with a reinforcement cage at the inner peripheral surface formed by a plurality of concave arc-shaped concrete protruding blocks 2 .

[0052] The reinforcement cage is composed of a plurality of main reinforcements 4 arranged at intervals and spiral stirrups 5 wound on the plurality of main reinforcements 4 .

[0053] When used for manual hole-digging piles, the through-long hole 3 can be used as a ventilation air supply port and a...

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Abstract

The invention provides a non-dismantling prefabricated concrete pile protecting die plate and a construction method. The non-dismantling prefabricated concrete pile protecting die plate comprises a prefabricated concrete protecting layer and concave arc shaped concrete bumps arranged at the inner side of the protecting layer, wherein a full-length hole is formed in the prefabricated concrete protecting layer; the concrete bumps are symmetrically arranged at intervals along the circumference of the inner side of the protecting layer. According to the design requirement, the construction method comprises the following steps: prefabricating and transporting the non-dismantling prefabricated concrete pile protecting die plate; levelling a site, and measuring a pile arranging position; hoisting and positioning the non-dismantling prefabricated concrete pile protecting die plate; performing a method combining mechanical soil excavation in the die plate and water injecting on the sidewall; constructing the bottom part of the die plate until the design height is reached, and then hoisting and positioning a reinforced cage; pouring concrete; grouting; maintaining until the pile is formed; and detecting a pile foundation. Compared with the prior art, the non-dismantling prefabricated concrete pile protecting die plate and the construction method have the advantages that the earth mass at the outside of a pile body, the underground water, the outer load and the like can be effectively stopped, so that the safety can be greatly improved; meanwhile, the non-dismantling prefabricated concrete pile protecting die plate is prefabricated in a factory, so that the construction quality can be ensured, and the construction period can be greatly reduced; the shortages such as necking down and hole collapse in traditional pile foundation construction can be overcome.

Description

technical field [0001] The invention relates to a pile protection formwork, in particular to a demolition-free prefabricated concrete pile protection formwork and a construction method, belonging to the field of civil engineering and building pile foundation engineering. Background technique [0002] The construction in the field of civil engineering and construction is experiencing the development from ground and above-ground projects to underground projects. The depth of foundation pits is getting deeper and larger, and the size of the area is getting larger and larger. The safety of foundation pits is directly related to the construction personnel, construction materials, and construction. The safety of machinery and even surrounding buildings and the environment, so ensuring the safety of foundation pits is of great significance. [0003] Enclosure piles and support piles play a pivotal role in foundation pit engineering. Traditional pile foundation engineering has the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/66E02D5/38
CPCE02D5/38E02D5/665
Inventor 程强强陈年和孙武曹洪吉赵志强郭牡丹
Owner 浙江长兴市政建设有限公司
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