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Method for automatically constructing prestressed pile

A technology of prestressed piles and prestressed pipe piles, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problem that the length of prestressed pipe piles affects construction efficiency, and achieve shortened design length, high bearing capacity, increased Effect of contact area

Active Publication Date: 2021-10-15
湖北波森特岩土工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the problem that the excessive length of prestressed pipe piles required for the foundation of high-rise buildings affects the construction efficiency, this application provides a method for automatic construction of prestressed piles

Method used

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  • Method for automatically constructing prestressed pile
  • Method for automatically constructing prestressed pile
  • Method for automatically constructing prestressed pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The embodiment of the present application discloses a method for automatically constructing prestressed piles. refer to figure 1 with figure 2 , the automatic prestressed pile body construction method comprises the following steps:

[0038] S1. When the equipment enters the site, prepare the crane, hydraulic hoist 1, rammer 2 and the prestressed pipe pile 3 through the middle at the construction site. The prestressed pipe pile 3 can be a square pipe or a round pipe, depending on the actual construction needs That is, the crane is a crawler crane and multiple sets are prepared for lifting multiple prestressed pipe piles 3; the rammer 2 is adapted to the hollow part of the prestressed pipe pile 3, so that the rammer 2 can pass through the prestressed pipe pile 3; the hydraulic winch 1 winds the lifting rope 4, and installs the rammer 2 on the hook at the end of the lifting rope 4; the above rammer 2, prestressed pipe pile 3, hydraulic winch 1, and crane all Multiple s...

Embodiment 2

[0063] The embodiment of the present application discloses a method for automatically constructing prestressed piles. The difference from Embodiment 1 is that in step S5, after the initial three-strike penetration test, the rammer 2 is replaced with a hollow hammer with a hollow middle part, and the anti-drawing reinforcement is penetrated into the hollow part of the prestressed pipe pile 3, specifically Yes, the anti-pull bar is welded by multiple main steel bars. The end of the main steel bar extending into the lower end of the soil body is integrally bent with a claw steel bar. The angle between the claw steel bar and the main steel bar is 85-95 degrees.

[0064] Before tamping, lift the hollow hammer so that the end of the anti-drawing rib penetrates into the hollow part of the hollow hammer, and repeat steps S4 to S5, and tamp the lower end of the anti-drawing rib into the expanding head through the filler. When pouring concrete in step S7 subsequently, the anti-drawing t...

Embodiment 3

[0066] The embodiment of the present application discloses a method for automatically constructing prestressed piles. refer to Figure 5 , the difference from Embodiment 1 or Embodiment 2 is that the end of the sealing plate 7 away from the prestressed pipe pile 3 is provided with a conical head 10 whose tip deviates from the prestressed pipe pile 3, which can effectively reduce the pressure of the sealing plate 7 along with the prestressed pipe pile 3. When the pile 3 sinks, it can also effectively protect the sealing plate 7, so as to avoid the crushing of the sealing plate 7 caused by gravel during the sinking of the prestressed pipe pile 3, and ensure that the sealing plate 7 is on the prestressed pipe pile 3 The closing effect of the sinking end.

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Abstract

The invention discloses a method for automatically constructing a prestressed pile. The method comprises the following steps that S1, equipment enters a site; S2, a prestressed pile body is sunken, and after the sunken end of the prestressed pipe pile is blocked, the prestressed pipe pile is sunken to a pile hole position design elevation supporting layer; S3, a tamping position is calibrated, a rammer is put down to the bottom of the prestressed pipe pile, and the tamping position is calibrated; S4, automatic filling and tamping are conducted, a set amount of filler is conveyed to the hollow part of the prestressed pipe pile, hammering is conducted, and the sinking amount is detected; the sinking amount numerical value interval is judged, and the filling action and the tamping action are controlled; S5, the three-time tamping penetration degree is detected; S6, tamping judgment is conducted; and S7, inner pile forming is conducted, a reinforcement cage is put down in the hollow part of the prestressed pipe pile, and concrete is poured. The method has the effects that the bearing capacity is high, the design length of the prestressed pipe pile is controllable, the construction efficiency is high, and the construction cost is low.

Description

technical field [0001] The present application relates to the field of pile foundation construction, in particular to a method for automatically constructing prestressed piles. Background technique [0002] Prestressed concrete pipe piles can be divided into post-tensioned prestressed pipe piles and pretensioned prestressed pipe piles. Pretensioned prestressed pipe pile is a hollow cylindrical slender concrete prestressed member made by pretensioned prestressing process and centrifugal forming method. It is mainly composed of cylindrical pile body, end plate and steel ferrule. . This kind of pipe pile generally adopts the following methods when sinking piles: hammering method, static pressure pile method, vibration method, water jet method, pre-drilling method and middle digging method, etc., and static pressure pile method is used most. [0003] Generally, when prestressed pipe piles are used to strengthen the foundation foundation, the outer diameter of the pile body is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D7/06E02D13/00E02D5/58
CPCE02D7/06E02D13/00E02D5/58
Inventor 邵良荣
Owner 湖北波森特岩土工程有限公司
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