CN111005382A

CN111005382A - Device for controlling verticality of prestressed concrete pipe pile

Info

Publication number: CN111005382A
Application number: CN201811165812.6A
Authority: CN
Inventors: 李齐升
Original assignee: Guangshui Huiyang Technology Co ltd
Current assignee: Guangshui Huiyang Technology Co ltd
Priority date: 2018-10-08
Filing date: 2018-10-08
Publication date: 2020-04-14

Abstract

The invention discloses a device for controlling the verticality of a prestressed concrete pipe pile, which mainly comprises a hoop, a plumb and a dial, wherein the hoop comprises an upper hoop and a lower hoop, the upper hoop is connected to a vertical rod through an upper cross rod, the lower hoop is also connected to the vertical rod through a lower cross rod, a plumb line is fixed on the upper hoop through a lifting hook, the plumb line is connected to the plumb line below, the vertical tip of the plumb line is in contact with the dial, and the dial is fixed on the lower cross rod. The invention has the following advantages: when the first section of pile is pressed down, the verticality is 0.3 percent (less than 0.5 percent of the standard requirement); in the construction process, the maximum deviation of the perpendicularity of the pile body is 0.5 percent (less than 1 percent of the standard requirement), the device for measuring the perpendicularity of the pile body is simple in structure and convenient to operate, the perpendicularity of the pile body of the prestressed concrete pipe pile is controlled in real time, the pile forming quality is improved, and the pile driving progress is improved.

Description

Device for controlling verticality of prestressed concrete pipe pile

Technical Field

The invention relates to a device for controlling the verticality of a prestressed concrete pipe pile, and belongs to the field of constructional engineering.

Background

The concrete strength grade of the prestressed concrete pipe pile is not lower than C80 grade, and the concrete strength is high. The bearing capacity of a single pile is high, and after the pile tip enters the bearing layer, the bearing capacity of the pile end is improved by 80-100% compared with that of undisturbed soil through strong extrusion. The design and selection range is wide. The method has strong adaptability to address conditions with large fluctuation of the supporting layer. The manufacturing cost is low, the price of the unit bearing capacity is only 1/3-2/3 of the steel pile, and steel is saved. The transportation and hoisting are convenient, and the pile splicing is rapid. The single pile can be connected into any length and is not limited by the capacity of construction machinery and construction conditions. The construction speed is fast, the work efficiency is high, the construction period is short, and the construction is civilized. The pile body is resistant to driving and strong in penetrating power. The reliability, safety and practicability of the prestressed concrete pipe pile technology are greatly improved after years of continuous improvement and application, and the prestressed concrete pipe pile technology is widely applied to industrial and civil buildings, railways, bridges, port wharfs and other projects.

The verticality deviation of the first section of pile when pressed down is not more than 0.5% specified in the technical Specification for building pile foundations (JGJ 94-2008); the verticality of the pile body should be measured in the pile pressing process. When the deviation of the perpendicularity of the pile body is larger than 1%, the reason should be found and corrected. Pile perpendicularity should be checked in the pile pressing process specified in the acceptance Standard of construction Foundation engineering construction quality (GB 50202-2002). The perpendicularity of the prestressed concrete pipe pile is measured in the construction process, the perpendicularity deviation is strictly controlled, and the construction quality is guaranteed.

Three methods are commonly adopted for controlling the verticality of the prestressed concrete pipe pile in the construction process of a construction site:

1. perpendicularity adjustment of tower frame of pile machine

After the first section of pile is hoisted and aligned, the perpendicularity is adjusted by the pile machine, the perpendicularity of a tower frame of the pile machine is observed through a horizontal disc in an operating room, and the oil cylinder is adjusted. The method is controlled before pile sinking, and in the pile pressing process, a driver observes the adjustment of the horizontal disc in an operation chamber, and the method does not directly detect the perpendicularity of a pile body and has errors.

2. Vertical observation of constructors

The field constructor adopts the mode of hanging the plumb line to control the straightness that hangs down, and the naked eye is observed and is judged by experience, can not the quantization control. And often constructor is for saving time, only measures to a direction, can't guarantee construction quality.

3. Theodolite observation

The two vertical lines form 90 degrees from the front and the side, and the observation is carried out by a theodolite. The method is more accurate in data measurement, but needs two theodolites and more constructors, thereby increasing the cost and consuming time.

Disclosure of Invention

The invention aims to solve the technical problem of providing a device for controlling the verticality of a prestressed concrete pipe pile.

The invention is realized by the following scheme: the utility model provides a device of control prestressed concrete tubular pile straightness that hangs down, it mainly comprises clamp, plumb and calibrated scale, the clamp comprises last clamp and lower clamp, it is connected to the montant through last horizontal pole to go up the clamp, the clamp also is connected to through the sheer pole montant down, the plumb line passes through the lifting hook to be fixed go up on the clamp, the plumb line is being connected down the plumb line, the point of drooping of plumb contacts the calibrated scale, the scale disc is fixed on the sheer pole.

Go up clamp and lower clamp and be bent into 1/4 circular arcs that the diameter is 550mm by two round steel bars and constitute.

The upper cross rod, the lower cross rod and the vertical rod are connected into a half I shape by square steel pipes with the diameter of 20mm multiplied by 1 mm.

The middle of the vertical rod is sleeved with a handle.

The dial has an accuracy of 1 mm.

Go up the clamp with go up the horizontal pole on same water flat line, down the clamp with the sheer pole is also on same water flat line.

The upper cross rod and the lower hoop are perpendicular to the vertical rod.

The tubular pile is parallel to the vertical rod.

The invention has the beneficial effects that:

tests show that the verticality is 0.3 percent (less than 0.5 percent of the standard requirement) when the first section of pile is pressed down; in the construction process, the maximum deviation of the perpendicularity of the pile body is 0.5% (less than 1% of the standard requirement). The device for measuring the perpendicularity of the pile body is simple in structure and convenient to operate, the perpendicularity of the pile body of the prestressed concrete pipe pile is controlled in real time, the pile forming quality is improved, and the pile driving progress is improved.

Drawings

FIG. 1 is a schematic structural view of a device for controlling the verticality of a prestressed concrete pipe pile according to the present invention;

FIG. 2 is a schematic diagram of the use method of the device for controlling the verticality of the prestressed concrete pipe pile of the present invention;

in the figure: the pipe pile fixing device comprises a base, a pipe pile, a clamp 1, a clamp 2, a lower clamp, an upper cross rod 3, a lower cross rod 4, a vertical rod 5, a handle 6, a plumb line 7, a lifting hook 8, a dial 9, a plumb line 10 and a pipe pile 11.

Detailed Description

The invention is further illustrated below with reference to fig. 1-2:

a device for controlling the verticality of a prestressed concrete pipe pile mainly comprises a hoop, a plumb 10 and a dial 9, wherein the hoop comprises an upper hoop 1 and a lower hoop 2, the upper hoop 1 is connected to a vertical rod 5 through an upper cross rod 3, the lower hoop 2 is also connected to the vertical rod 5 through a lower cross rod 4, a plumb line 7 is fixed on the upper hoop 1 through a lifting hook 8, the plumb line 7 is connected with the plumb 10 below, the vertical tip of the plumb 10 contacts the dial 9, the dial 9 is fixed on the lower cross rod 4, the upper hoop 1 and the lower hoop 2 are formed by bending two round steel bars into 1/4 circular arcs with the diameter of 550mm, an upper cross rod 3, the lower cross rod 4 and the vertical rod 5 are connected into a semi-I shape by square steel pipes with the diameter of 20mm multiplied by 1mm, a handle 6 is sleeved in the middle of the vertical rod 5, the precision of a graduated disc 9 is 1mm, the upper hoop 1, the lower clamp 2 and the lower cross rod 4 are also on the same horizontal line, the upper cross rod 3 and the lower clamp 2 are perpendicular to the vertical rod 5, and the tubular pile 11 is parallel to the vertical rod 5.

The use process of the device is as follows: firstly, erecting a tubular pile 11 on a pile driver; after the first section of tubular pile 11 is hoisted to align, the pile body is roughly leveled and vertically corrected by an adjusting mechanism arranged on the pile machine; tightly clamping an upper clamp 1 and a lower clamp 2 on a pile body of a pipe pile 11; holding the handle 6 by hand, standing the plumb line 10, reading out the numerical value on the dial 9, recording the data, and accurately adjusting the verticality of the pile body of the tubular pile 11; starting the pile driver, and pressing the pile body into the soil; monitoring the verticality of the pile body in real time in the construction process, and adjusting in time; and after pile sinking is finished, the pile driver moves to the next pile position.

Although the invention has been described and illustrated in some detail, it should be understood that various modifications and equivalent arrangements may be resorted to, falling within the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a control straightness's that hangs down device of prestressed concrete tubular pile, its mainly comprises clamp, plumb (10) and calibrated scale (9), its characterized in that: the clamp comprises last clamp (1) and lower clamp (2), go up clamp (1) and be connected to montant (5) through last horizontal pole (3), lower clamp (2) also are connected to through sheer pole (4) montant (5), plumb line (7) are fixed through lifting hook (8) on going up clamp (1), plumb line (7) are being connected down plumb (10), the tip of hanging down of plumb (10) contacts calibrated scale (9), calibrated scale (9) are fixed on sheer pole (4), it forms to go up clamp (1) and lower clamp (2) by two round steel muscle bending become diameter for the 1/4 circular arcs of 550mm, go up horizontal pole (3), sheer pole (4) and montant (5) and connect into half I-shaped by 20mm x 1 mm's square steel pipe, go up clamp (1) with go up horizontal pole (3) on same water flat line, the lower clamp (2) and the lower cross rod (4) are also on the same horizontal line.

2. The device for controlling the verticality of the prestressed concrete pipe pile according to claim 1, is characterized in that: the middle of the vertical rod (5) is sleeved with a handle (6).

3. The device for controlling the verticality of the prestressed concrete pipe pile according to claim 1, is characterized in that: the dial (9) has an accuracy of 1 mm.

4. The device for controlling the verticality of the prestressed concrete pipe pile according to claim 1, is characterized in that: the upper cross rod (3) and the lower hoop (2) are perpendicular to the vertical rod (5).

5. The device for controlling the verticality of the prestressed concrete pipe pile according to claim 1, is characterized in that: the tubular pile (11) is parallel to the vertical rod (5).