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Octagonal pile and foundation structure applying octagonal pile

A technology of octagonal piles and foundations, which is applied to foundation structure engineering, sheet pile walls, buildings, etc., can solve problems such as poor reliability and durability, increased construction costs, and waste of land, so as to achieve flexible and fast construction, reduce construction costs, and save space. less demanding effect

Active Publication Date: 2012-07-18
GUANGDONG SHUNDE POWER DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional building materials belong to the basic raw material industry. Some products produce serious pollution, consume high resources, waste land, threaten the ecological environment, and are difficult to meet the requirements of national economic construction and modern social development.
In areas where there are many soft soils, many equipment and maintenance structures in power engineering need foundation treatment, but the current foundation type selection often cannot properly meet the design requirements, often overkill and use concrete prefabricated square piles , bored cast-in-place piles, powder-sprayed cast-in-place piles, and even enclosure walls all use φ400 prestressed pipe piles, which greatly increases the construction cost; while natural foundation pressured piles, although lower in cost, are reliable and durable Poor performance, it is difficult to meet the quality requirements of the building

Method used

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  • Octagonal pile and foundation structure applying octagonal pile
  • Octagonal pile and foundation structure applying octagonal pile
  • Octagonal pile and foundation structure applying octagonal pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Located in a substation in Yunfu City, the substation has a 292-meter-long 180mm-thick wall and 59 equipment. The weight of the equipment ranges from 0.7 tons to 1.0 tons; the 180 mm thick brick wall is used as foundation beams, and there are 60 pillars every 5 meters. Since the surface ranges from 1 to 3 meters as backfill, it is not feasible to directly build a natural foundation, and foundation treatment is required. Moreover, one side of the power station is adjacent to a fish pond, and pile drivers cannot enter. In this case, we thought of octagonal piles with lower requirements on the construction site and more flexible construction methods.

[0026] At the same time, we also compared the economic advantages and disadvantages of the two foundation treatment methods:

[0027] ① 250x250 prefabricated concrete square piles: only considered as friction piles, only one is needed under each wall column, but considering the requirements of bending moment, two are requi...

Embodiment 2

[0031] A temporary mixing plant located in Desheng area of ​​Shunde requires foundation treatment. The geological condition of this area is poor and the surface layer is covered with thick soft soil. In the feasibility study stage, we make the following assessments:

[0032] If powder-spraying piles are to be processed, 100 piles are needed per square meter, and each pile is 6 meters long. Considering the cost of powder-spraying piles at 50 yuan per meter, an investment of 30,000 yuan is required; There are 4 piles per square meter, and the length of the piles is also 6 meters. Considering the cost of 55 yuan per pile, an investment of 22,000 yuan is required. It can be seen that under the condition of equal utility, choosing octagonal piles is relatively economical in investment and reliable. In the piling process, the effect of foundation treatment can be known immediately, and the number and length of piles can be increased or reduced on site, and there is no need to do in...

Embodiment 3

[0034] It is located in a small electric house in Shunde, which needs foundation treatment. Let’s compare two feasible solutions:

[0035] If the natural foundation is used to push down the wooden piles, 60 5-meter-long φ120 pine piles are required, calculated at 70 yuan per 5-meter wooden pile, and 4,200 yuan is required to purchase piles; if octagonal piles are used instead, each 5-meter-long octagonal pile is required Calculated at 50 yuan, it takes 3,000 yuan to buy piles. It can be seen that the investment in piles alone has saved 29%. Moreover, termites in this area have serious erosion of wooden piles, and the phenomenon of wooden piles being corroded by other factors cannot be ignored. In contrast, the quality of the pile body of octagonal piles is much more stable and stronger than wooden piles, and it saves The use of wood is also the green environmental protection advocated today.

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Abstract

The invention discloses an octagonal pile and a foundation structure applying the octagonal pile. The octagonal pile comprises a pile body, the cross section of the pile body is in an octagonal shape, reinforcing steel bars are arranged in the pile body, the length direction of the reinforcing steel bars is consistent with the direction of the pile body, and fine stone concrete is filled among the reinforcing steel bars. When applied in a pile foundation, the octagonal pile saves more materials than the traditional square piles, tubular piles, wood piles and the like, thereby benefiting of reducing construction cost. When applied in the foundation treatment, the octagonal pile is more assuring on the piling quality than deep stirring piles, bored concrete piles and the like, is more flexible and rapid in construction and greatly shortens the construction period. The octagonal pile is simple in construction and adopts hammering type piling. Piling equipment is composed of a pile hammer, a piling frame, accessory equipment (such as a pile cap, a cushion, a pile follower and the like) and the like and has obviously lower field requirement than other piling machines.

Description

technical field [0001] The invention relates to an octagonal pile; the invention also relates to a foundation structure. Background technique [0002] Traditional building materials belong to the basic raw material industry. Some products produce serious pollution, consume high resources, waste land, threaten the ecological environment, and are difficult to meet the requirements of national economic construction and modern social development. In areas where there are many soft soils, many equipment and maintenance structures in power engineering require foundation treatment, but the current foundation type selection often cannot properly meet the design requirements, often overkill, and use concrete prefabricated square piles , bored cast-in-place piles, powder-sprayed cast-in-place piles, and even enclosure walls all use φ400 prestressed pipe piles, which greatly increases the construction cost; while natural foundation pressured piles, although lower in cost, are reliable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/22E02D5/48E02D27/12E02D27/34
Inventor 许建军郭福明王东王崇康张新尧钟存武钟富春尹萍
Owner GUANGDONG SHUNDE POWER DESIGN INST CO LTD
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