Building pile foundation construction method

A construction method and technology of building piles, applied in construction, foundation structure engineering, excavation, etc., to achieve the effect of convenient operation, obvious economic benefits, and ensuring the quality of pile foundations

Active Publication Date: 2016-02-03
CHONGQING TECH & BUSINESS INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a construction method for building pile foundations, which overcomes the deficiencies in the existing single pile foundation construction technology, makes it not limited by geological conditions, ensures the quality of pile foundations, and can be used during pile foundation construction. Avoid the impact of mud condensation on the site, ensure continuous construction of pile foundations, reduce construction costs, and improve construction efficiency

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Embodiment

[0029] This embodiment is applied to the floor project, which is designed as a pile foundation, with diameters of 1.0m, 1.2m, 1.4m, and 1.6m, and a maximum pile depth of 30m; the geological conditions from top to bottom are: 3-6m artificial miscellaneous filling Soil layer, 5-6m clay layer, 6-8m pebble layer, 3-5m silt layer, below is mudstone, sandy mudstone layer; pile foundation depth design requires 3m into the bedrock.

[0030] The building pile foundation construction method of the present embodiment may further comprise the steps:

[0031] P1: Preparation before drilling: level and tamp the site before construction to meet the bearing capacity requirements of the drilling site; measure and place the pile hole position, set up mud pools and mud circulation grooves; according to the plane position of the building pile foundation and the drilling sequence Lay the drilling platform for supporting the drilling rig on the construction site; use the working platform to provide...

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Abstract

The invention discloses a building pile foundation construction method. The building pile foundation construction method comprises the following steps of (P1) preparation before drilling, (P2) embedding of protecting barrels, (P3) grouting, (P4) hole drilling, (P5) hole cleaning and (P6) pile forming. According to the building pile foundation construction method, a rotary drilling rig and a percussion drill rig are used for drilling holes in a combined manner, the shortcoming in the existing single pile foundation construction technology is overcome, suitable drill rigs are selected according to different geological conditions, the building pile foundation construction method is not limited by the geological conditions, accidents of hole collapse, drill jamming and the like are avoided, and the quality of a pile foundation is ensured; and moreover, an operation rack is a stable support for the drill rigs, construction of the pile foundation is not affected by soil texture, site mud or raining, continuous construction of the pile foundation is guaranteed, the construction cost is reduced, and the construction efficiency is improved. The building pile foundation construction method is convenient to operate, high in construction speed and obvious in economic benefit; and materials are saved.

Description

technical field [0001] The invention relates to a construction method, in particular to a construction pile foundation construction method. Background technique [0002] With the development of civil engineering technology, more and more pile foundations are used, and the development trend is towards super-long and large-diameter pile foundations. At present, pile foundation drilling generally adopts a single construction method. The specific construction methods are: Percussion drilling rig drilling, rotary drilling rig drilling, etc. The pile foundation construction method of the percussion drilling rig uses mud to protect the drill hole, which is suitable for various strata such as clay, sandy soil, soft soil, pebble layer, soft and hard rock stratum, etc., but its construction efficiency is low, and the general stratum can complete 5-5 8m, for special formations such as soft formations and hard rock formations, the work efficiency is very low, and some even can only com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/12
CPCE02D5/36E02D17/08E02D2300/0023E02D2300/0032E21B15/00E21B15/003
Inventor 王悦王清江
Owner CHONGQING TECH & BUSINESS INST
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