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Method for improving pile group bearing capacity by means of reticular pile foundations

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, and high cost, improve the overall bearing capacity and anti-overturning capacity, and increase the overall The effect of shortening the bearing area and the length of the pile group

Inactive Publication Date: 2014-03-26
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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  • Method for improving pile group bearing capacity by means of reticular pile foundations
  • Method for improving pile group bearing capacity by means of reticular pile foundations
  • Method for improving pile group bearing capacity by means of reticular pile foundations

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Embodiment 1

[0027] 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 , 6 As shown, in order to improve this phenomenon, the present embodiment provides a method for improving the bearing capacity of the pile group by utilizing the networked pile foundation. The pile group is composed of multiple groups of networked pile foundations 7, and each group of networked piles The foundation is composed of a number of single piles 5. The mesh pile foundation 7 has a rectangular shape as a whole. Most of the pile bodies of each single pile 5 are located in the soil. Compared with the ordinary pile foundation, the bearing capacity of the pile group can be improved. According to the method, two pile beams 6 are arranged at the bottom and the middle of the net pile foundation 7, so that the single pile...

Embodiment 2

[0036] Embodiment two: if Figure 7 , 8 As shown, compared with the method of using the mesh pile foundation to improve the bearing capacity of the pile group described in Embodiment 1, the mesh pile foundation in this embodiment has additional strip footings 8 at the bottom and middle of each single pile 5 , in order to further increase the load-bearing area on the basis of the mesh pile foundation described in the first embodiment, and improve the anti-overturning capability of the pile group.

[0037] Such as Figure 7 , 8 As shown, the netted pile foundation 7 in this embodiment is specifically a rectangular outline-shaped pile group composed of several single piles 5 arranged deep into the soil, and the method for improving the bearing capacity of the pile group by using the netted pile foundation specifically includes the following measure:

[0038] (1) Two pile beams 6 are arranged between adjacent single piles 5 to connect them to each other. The monopile 5 connec...

Embodiment 3

[0050] Embodiment three: as Figure 9 , 10 As shown, compared with the method of using the mesh pile foundation to improve the bearing capacity of the pile group described in the first embodiment, the mesh pile foundation in this embodiment adds semicircular pile feet at the bottom and middle of each single pile 5 9, to further increase the bearing area on the basis of the mesh pile foundation described in Embodiment 1, and improve the overturning resistance of the pile group.

[0051] Such as Figure 9 , 10 As shown, the netted pile foundation 7 in this embodiment is specifically a rectangular outline-shaped pile group composed of several single piles 5 arranged deep into the soil, and the method for improving the bearing capacity of the pile group by using the netted pile foundation specifically includes the following measure:

[0052] (1) Two pile beams 6 are arranged between adjacent single piles 5 to connect them to each other. The monopile 5 connected to it is integ...

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Abstract

The invention relates to a method for improving the pile group bearing capacity by means of reticular pile foundations. A pile group is composed of a plurality of sets of reticular pile foundations, each reticular pile foundation is formed by arranging a plurality of single piles which vertically penetrate into a soil body, and the method comprises the following steps: arranging the single piles in the reticular pile foundations in each set according to a certain shape, and respectively arranging a pile beam for connecting every two adjacent piles at the bottom and middle positions of the adjacent single piles so as to increase the bearing areas of the reticular pile foundations and enable the pile beam and the single piles to be of an integral structure. The method has the advantages that the pile group is simple in structure, the pile beam for connecting the adjacent single piles is additionally arranged at the bottom and middle positions of the pile foundations so as to form the whole stable pile group structure, pile feet are additionally arranged on each single pile so as to increase the whole bearing areas of the reticular pile foundations, the whole bearing capacity and the anti-toppling capacity of the pile group are effectively improved, and in addition, compared with a conventional pile group with the same bearing capacity, the length of the pile group is greatly shortened.

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 utilizing mesh pile foundations. 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 it; the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/16
Inventor 王剑明蒋孝云钱寅星
Owner CHINA RAILWAY 24TH BUREAU GRP
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