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The Method of Improving the Bearing Capacity of Pile Group by Utilizing Well-shaped Pile Row Foundation

A pile foundation and bearing capacity technology, applied in the direction of foundation structure engineering, construction, etc., can solve the problems of huge length requirements of the pile body, increase the difficulty of construction, limited effect, etc., to improve the overall bearing capacity and anti-overturning capacity, increase the The effect of the overall bearing area and the simple structure of the pile group

Active Publication Date: 2017-02-01
CHINA RAILWAY 24TH BUREAU GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the existing problems of the pile group composed of row pile foundations are: ① In order to ensure that it can provide sufficient bearing capacity for the superstructure, the length of the pile body is extremely required, which not only increases the pressure on the construction cost, but also Increased the difficulty of construction; ②The tops of adjacent foundation piles are usually connected with connecting beams to increase the overall stability of the pile group, but the effect is extremely limited and the cost is high, which affects the construction of the superstructure

Method used

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  • The Method of Improving the Bearing Capacity of Pile Group by Utilizing Well-shaped Pile Row Foundation

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Embodiment 1

[0026] Embodiment 1: A common problem existing in pile group foundations currently used to provide sufficient bearing capacity for the superstructure is that the bearing capacity is small and the length of the pile body is relatively large. Such as Figure 5 As shown, in order to improve this phenomenon, this embodiment provides a method for improving the bearing capacity of pile groups by using U-shaped pile foundations. The pile group is composed of multiple rows of pile foundations arranged in parallel, and each group The row pile foundation is composed of several single piles, and most of the pile bodies of each single pile are located in the soil. Compared with the conventional row pile foundation, the method for improving the bearing capacity of the pile group is by setting the bottom of the row pile foundation 7 The pile crossbeam 6 connects the single piles 5 in one body, so that it can provide a bearing area much larger than the original pile foundation, and improve t...

Embodiment 2

[0035] Embodiment two: if Figure 6 , 7 As shown, compared with the method of using the well-shaped pile row foundation to improve the bearing capacity of the pile group described in the first embodiment, the pile row foundation in the present embodiment has additional strip piles at the bottom and middle of each single pile 5 Foot 8, to further increase the load-bearing area on the basis of the row pile foundation described in the first embodiment, and improve the anti-overturning capability of the pile group.

[0036] Such as Figure 6 , 7 As shown, the well-shaped pile row foundation 7 in the present embodiment is composed of several single piles 5 arranged deep in the soil, and the method for improving the pile group bearing capacity by using the well-shaped pile row foundation specifically includes the following measures:

[0037] (1) Two pile beams 6 are arranged between adjacent single piles 5 to connect them to each other. The crossbeam 6 and the adjacent single pi...

Embodiment 3

[0049] Embodiment three: as Figure 8 , 9 As shown, compared with the method of using the well-shaped pile row foundation to improve the bearing capacity of the pile group described in the first embodiment, the pile row foundation in this embodiment adds a semicircular pile foot 9 at the bottom of each single pile 5 , to further increase the load-bearing area on the basis of the row of pile foundations described in Embodiment 1, and improve the overturning resistance of the pile group as a whole.

[0050] Such as Figure 8 , 9 As shown, the well-shaped pile row foundation 7 in the present embodiment is composed of several single piles 5 arranged deep in the soil, and the method for improving the pile group bearing capacity by using the well-shaped pile row foundation specifically includes the following measures:

[0051] (1) Two pile beams 6 are arranged between adjacent single piles 5 to connect them to each other. The crossbeam 6 and the adjacent single piles 5 connected...

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Abstract

The invention discloses a method for improving bearing capacity of a pile group by grillage-type row pile foundations. The pile group is composed of multiple rows of row pile foundations, and each row pile foundation is composed of a plurality of single piles by arraying. The method is characterized by including the steps: connectively arranging pile crossbeams at positions, of the bottoms and the middles of pile bodies, between every two adjacent single piles in each row pile foundation so as to increase bearing area of each row pile foundation, and enabling the crossbeams and the single piles to be of an integrated structure. The method has the advantages that the pile group composed of the grillage-type row pile foundations is simple in structure, the pile crossbeams for connecting adjacent single piles are additionally arranged at the bottom and in the middle of each row pile foundation so as to form a stable pile group integrated structure, a strip-shaped pile foot or a semicircular pile foot is additionally arranged on each single pile so as to increase integral bearing area of the pile group, and accordingly the integral bearing capacity and anti-overturning capacity of the pile group are effectively enhanced; besides, compared with a conventional pile group with same bearing capacity, the pile group can be greatly shortened in length.

Description

technical field [0001] The invention belongs to the technical field of pile foundations, and in particular relates to a method for improving the bearing capacity of pile groups by using a well-shaped pile row foundation. Background technique [0002] Pile row foundation is a building pile foundation structure composed of a certain pile type arranged in a queue. It is widely used in high-rise buildings because of its large bearing capacity, good stability, small settlement value, and adaptability to various geological conditions and load conditions. It has been widely used in civil and water conservancy projects such as large factories, water conservancy and hydropower hubs, railway projects, highway projects, bridge projects, offshore oil production platforms, and nuclear power plants. [0003] The row pile foundation is specifically composed of several foundation piles and the caps connected to the top of the piles to provide sufficient bearing capacity for the buildings on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/16
Inventor 朱克宏刘宝剑王飞球钱寅星
Owner CHINA RAILWAY 24TH BUREAU GRP