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Rotary expansion pile for foundation reinforcement and construction method thereof

A technology of foundation reinforcement and construction method, which is applied in foundation structure engineering, sheet pile wall, soil protection and other directions, can solve the problems of difficult piling, poor pile pullout resistance, low pile quality, etc., and achieves shortened construction period and high support. strength, enhance the effect of pull-out resistance

Active Publication Date: 2021-05-25
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a rotary expansion pile for foundation reinforcement and its construction method, which solves the problems of difficulty in piling, poor pullout resistance of the pile, and low pile quality, and can provide more High bearing capacity, strengthen the foundation, improve construction efficiency, shorten the construction period, and reduce the amount of reinforced concrete materials

Method used

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  • Rotary expansion pile for foundation reinforcement and construction method thereof
  • Rotary expansion pile for foundation reinforcement and construction method thereof
  • Rotary expansion pile for foundation reinforcement and construction method thereof

Examples

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Embodiment 1

[0042] This embodiment provides a rotary expansion pile for foundation reinforcement, such as figure 1 and figure 2 As shown, it includes a pile foundation main body and a grouting pipe 1, and the grouting pipe 1 is detachably connected inside the pile foundation main body.

[0043] In this embodiment, the grouting pipe 1 is made of steel pipe; it can be understood that in other embodiments, the grouting pipe 1 may also be made of other metal materials.

[0044] Further, such as image 3 As shown, the top of the grouting pipe 1 is provided with an upper thread 11, and the upper thread 11 is used to connect piling equipment. The middle part of the grouting pipe 1 is provided with a middle thread 14, and the upper side of the middle thread 14 is provided with a thickening section 13. The thickening section 13 is a pipe section whose diameter is greater than that of the main body of the grouting pipe 1; the middle thread 14 is used to keep the pile before the pile expansion wo...

Embodiment 2

[0055] This embodiment provides a construction method for a rotary expansion pile for foundation reinforcement, using the rotary expansion pile described in Embodiment 1, including the following steps:

[0056] 1) Transport the rotary piling equipment to the construction site and complete the installation.

[0057] 2) The prefabricated rotary expansion pile is vertically fixed by a fixing device, and then connected to the piling equipment through the connecting member 5 .

[0058] Wherein, the fixing device adopts the prior art, as long as the fixing of the main body of the pile foundation can be realized.

[0059] Such as Figure 5 As shown, the connecting member 5 includes a connecting main body and a threaded section 51 provided at one end of the connecting main body, and the threaded section 51 is connected with piling equipment. An opening 52 is provided at the end of the connecting body away from the threaded section 51 , the opening 52 has a certain depth, and its pur...

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Abstract

The invention discloses a rotary expansion pile for foundation reinforcement and a construction method thereof. According to the technical scheme, the rotary expansion pile comprises a pile foundation body and a grouting pipe, and the grouting pipe is detachably connected to the interior of the pile foundation body. The pile foundation body comprises an upper pile section, a middle pile section and a lower pile section which are connected in sequence, the middle pile section is hinged to the upper pile section and the lower pile section, and the middle pile section can be opened by a set angle under the rotation effect of the grouting pipe. The problems that piling is difficult, the pulling resistance of piles is poor, the pile forming quality is not high and the like are solved, higher bearing capacity can be provided, a foundation can be reinforced, the construction efficiency is improved, the construction period is shortened, and the use amount of reinforced concrete materials is reduced.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a rotary expansion pile for foundation reinforcement and a construction method thereof. Background technique [0002] In the era of large infrastructure construction, pile foundation engineering has developed rapidly. Steel pipe piles and cast-in-situ piles are widely used in the pile foundations of buildings such as houses, bridges, and tunnels. The advantages of steel pipe piles are that they are fast in construction, low in cost, and flexible in use; Construction on the foundation, the construction vibration is small. Both can provide high bearing capacity. However, when the steel pipe piles are being constructed, it is difficult to drill into the bottom layer, and the contact surface between the steel pipe piles and the bottom layer is small, and the supporting force is weak; the cast-in-place piles are labor-consuming and time-consuming, the hole forming spee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/50E02D3/00E02D15/04E02D7/06
CPCE02D5/50E02D3/00E02D15/04E02D7/06
Inventor 张乾青殷伟平刘善伟赵伊华王绍磊陈迪杨崔伟
Owner SHANDONG UNIV