Construction process of floral tube dry filling piles

A construction process and cast-in-place pile technology, which is applied in sheet pile walls, infrastructure engineering, construction, etc., can solve the problems of long mixing time interval, poor upper compactness, and large thickness of mud around the pile.

CN101713189BInactive Publication Date: 2012-10-17HENAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2012-10-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a construction process of floral tube dry filling piles with obvious engineering effect, low economic cost, high technical content and high resource utilization by improving the inherent characteristics of cement, soil strata, materials and the like. The process comprises the following steps of: (1) pore-forming process: 1, using dry pore-forming process for pore-forming piles above underground water level; 2, positioning a pore opening machine and a drill for pore-forming piles below underground water level; drilling in at low stroke and high rotary speed with clean water; reaching a drilling-in depth; lifting to a pore opening at unified stroke and high rotary speed with clean water; drilling into a pore bottom at unified stroke and high rotary speed with clean water; rotating at high speed and filling with cement mortar; and lifting to the pore opening at high rotary speed and low stroke after cement mortar returns to the pore opening; moving the drill; (2)the process of installation and pile molding by filling: adopting the following steps for installing pile pores and filling dry cement above or below water level: installing floral tubes; correcting the pore position of the floral tubes; filling the dry cement; and filling the dry cement to an elevation required by the design.
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Description

technical field

[0001] The invention belongs to the construction technology of building foundation, in particular to the construction technology of cast-in-situ piles. Background technique

[0002] From the classification of cast-in-place piles, flower tube dry-process cast-in-place piles belong to hole-forming cast-in-place piles. Its technology and process are similar to ordinary cast-in-place piles, special cast-in-place piles, advanced micro piles - small piles without sand, etc., but there are great differences. In order to more clearly introduce the characteristics of the flower tube dry cast-in-place pile, through engineering practice, the concrete production process and the production of the steel cage (or steel pipe) in the previous construction technology of the cast-in-place pile are summarized, summarized and classified. Explain the difference with the existing cast-in-place pile construction technology.

[0003] Concrete classification: The concrete in the fil...

Examples

Embodiment Construction

[0239] The flower tube dry cast-in-situ pile is composed of dry concrete, flower tube and other items. The specific process steps of implementation can be divided into four process parts. Each part is introduced in detail as follows:

[0240] 1. Hole forming process:

[0241] 1) Hole-forming piles above the groundwater level

[0242] Adopt dry hole-forming process: mechanical, manual and other traditional hole-forming processes. The form is determined according to the specific geological conditions and does not need to be improved.

[0243] 2) Hole-forming piles below the groundwater level

[0244] This process is suitable for engineering sites with geological conditions such as sand layer, silt layer, cohesive soil layer interbed or the combined stratum among them.

[0245] Drilling → drill in place → low stroke, high-speed rotation, clean water drilling → reach the drilling depth → unified stroke, high-speed rotation, clean water lift stop hole → unified stroke, high-spee...