CN217949175U

CN217949175U - Vertical resistance to plucking static test device of single pile

Info

Publication number: CN217949175U
Application number: CN202222033956.4U
Authority: CN
Inventors: 黄星; 刘兵; 李东昌; 褚小飞; 魏新
Original assignee: Huaian Construction Engineering Quality Inspection Center Co ltd
Current assignee: Huaian Construction Engineering Quality Inspection Center Co ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-12-02
Anticipated expiration: 2032-08-03

Abstract

The utility model discloses a vertical resistance to plucking static test device of single pile, including last diaphragm, lower diaphragm, go up through threaded rod fixed connection between diaphragm and the lower diaphragm, the diaphragm includes frame, connecting device down, connecting device includes punch holder, lower plate and at least one connecting block, bolted connection is passed through at both centers of punch holder, lower plate, connecting block one end presss from both sides tightly to be fixed in between punch holder, the lower plate, be equipped with the through-hole A that is used for inserting bolt fixed connection precast pile on the connecting block, the frame four corners is equipped with through-hole B, the center that is used for connecting threaded rod and is equipped with through-hole C, through-hole C diameter is greater than the lower plate diameter, is less than punch holder, lower plate press from both sides tightly connecting block free end distance behind the connecting block is from the length at lower plate center. The utility model discloses during the experiment, can add or reduce the connecting block as required to improve the hookup location of test device and tubular pile, what adapt to different diameters waits to detect the tubular pile.

Description

Vertical resistance to plucking static test device of single pile

Technical Field

The utility model relates to a foundation engineering test device especially relates to a vertical resistance to plucking static test device of single pile.

Background

In the vertical resistance to plucking static test of common precast tubular pile, the connected mode of pile body and jack mainly has:

1. a steel reinforcement cage with a certain length is placed in the pile, concrete is poured, and the steel reinforcement is directly connected with the force transmission pull rod by adopting a welding method. The disadvantage of this method is that the welding connection is needed, which is time-consuming and labor-consuming; the force transmission pull rods are not vertical, so that the stress of each pull rod is uneven, and the welding part is easy to break;

2. the high-strength bolt is fixed on a screw hole on the pile head end plate, and the bolt is directly connected with the force transmission pull rod by adopting a welding method. The method has the defects of time and labor waste due to welding; meanwhile, the force transmission pull rod is not vertical, so that the stress of each pull rod is uneven, and a welding part or a bolt is easy to break; when the test load is larger, the pile head end plate is easy to pull and separate;

patent application number is "CN201920619143.9" patent name is the effectual above-mentioned problem of having solved of patent of a precast pile resistance to plucking test quick connecting device, but because the pipe diameter of precast pile is different, the bolt hole position on it is not necessarily the same, can so, the bolt hole on the unable effectual many tubular piles of connection of bolt hole that sets up in advance, need prefabricate the multiple tubular pile of a plurality of connecting device adaptations.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vertical resistance to plucking static test device of single pile overcomes prior art's defect, when having solved precast tubular pile resistance to plucking experiment, can add or reduce the connecting block as required to improve the hookup location of test device and tubular pile, what adapt to different diameters waits to detect the tubular pile.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a vertical resistance to plucking static test device of single pile, includes diaphragm, lower diaphragm, through threaded rod fixed connection between diaphragm and the lower diaphragm, the diaphragm includes frame, connecting device down, connecting device includes punch holder, lower plate and at least one connecting block, bolted connection is passed through at both centers of punch holder, lower plate, connecting block one end is pressed from both sides tightly and is fixed in between punch holder, the lower plate, be equipped with the through-hole A that is used for inserting bolt fixed connection precast pile on the connecting block, the frame four corners is equipped with through-hole B, the center that is used for connecting the threaded rod and is equipped with through-hole C, through-hole C diameter is greater than the lower plate diameter, is less than punch holder, lower plate press from both sides tightly connecting block free end distance behind the connecting block is from the length at lower plate center.

Further, the through hole A is a long strip-shaped waist hole.

Further, at least one transversely-arranged groove A and at least one transversely-arranged groove B are formed in the lower surface of the upper surface of the connecting block, the lower surface of the upper clamping plate is provided with an annular boss A matched with the groove A, and the upper surface of the lower clamping plate is provided with an annular boss B matched with the groove B.

Further, the center of the lower surface of the upper clamping plate is provided with an annular boss C, the height of the annular boss C is larger than that of the annular boss A, the center of the lower clamping plate is provided with a boss D matched with the inner edge of the annular boss C, and when the connecting block is clamped by the upper clamping plate and the lower clamping plate, one end of the connecting block is abutted to the outer edge of the annular boss C.

Furthermore, the center of the upper transverse plate is provided with a plurality of layers of concave truncated cone-shaped grooves E.

Further, a threaded through hole is formed in the bottommost layer of the groove E, a bolt is connected to the threaded through hole in an internal thread mode, and a ball is embedded into the lower end portion of the bolt.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model provides a pair of vertical resistance to plucking static test device of single pile is through dividing into two parts with diaphragm down, improves tubular pile and test device's connecting bolt quantity through the quantity of increase and decrease connecting block, cliies the connecting block through punch holder and lower plate and realizes connecting device's a body structure, connects through connecting device and waits to detect tubular pile rethread frame and pull up connecting device from the bottom to the realization detects.

2. The utility model discloses set up rectangular shape waist hole with through-hole A, can be so that the connecting block realizes the connection of different diameter tubular piles.

3. The utility model discloses a set up recess A and recess B cooperation annular boss A and annular boss B for the tight connecting block of clamp that punch holder, lower plate can be better is difficult to take place the displacement, sets up the position control that annular boss A and annular boss B can make things convenient for the connecting block.

4. The utility model discloses a set up annular boss C and make when the connecting block can press from both sides tightly one end support its outer edge, press from both sides tight effect more stable.

5. The utility model provides a through setting up multilayer round platform form in a wretched state E, can be applicable to the jack of different diameters, aim at the center more easily, because the jack top cap diameter of different producers is different, can use the steel sheet to fill the step hole, improve lifting surface area.

6. The utility model discloses a set up the bolt lower extreme and set up the ball, help the center of diaphragm in the adjustment, can use ball contact jack-cap during the regulation, can withdraw from the bolt after targetting in place, avoid damaging the ball.

Drawings

Fig. 1 is a front view of the whole structure of the present invention.

Fig. 2 is a plan view of the lower horizontal plate of the present invention.

Fig. 3 is a sectional view of the connecting device of the present invention.

Fig. 4 is a cross-sectional view of the upper cross plate of the present invention.

Fig. 5 is a schematic structural diagram in use.

Detailed Description

The invention will be further elucidated with reference to the drawings and the embodiments, it will be appreciated that the following embodiments are only intended to illustrate the invention and not to limit the scope of the invention, and that modifications of the various equivalent forms of the invention by a person skilled in the art after reading the invention fall within the scope of the appended claims.

The single-pile vertical pulling-resistant static load test device shown in fig. 1 to 5 comprises an upper transverse plate 10 and a lower transverse plate 20, the upper transverse plate 10 and the lower transverse plate 20 are fixedly connected through a threaded rod 30, the lower transverse plate 20 comprises an outer frame 201 and a connecting device 202, the connecting device 202 comprises an upper clamping plate 2021, a lower clamping plate 2022 and at least one connecting block 2023, centers of the upper clamping plate 2021 and the lower clamping plate 2022 are connected through a bolt, one end of the connecting block 2023 is clamped and fixed between the upper clamping plate 2021 and the lower clamping plate 2022, a through hole a 31 for inserting a bolt to fixedly connect a precast pile is arranged on the connecting block 2023, through holes B2011 for connecting the threaded rod 30 are arranged at four corners of the outer frame 201, a through hole C2012 is arranged at the center, the diameter of the through hole C2012 is greater than that of the lower clamping plate 2022, and is smaller than the length of the free end of the connecting block 2023, which is located after the upper clamping plate 2021 and the lower clamping plate 2022 clamp the connecting block 2023, from the center of the lower clamping plate 2022.

Particularly, the lower transverse plate 20 is of a detachable structure, the number of the connecting blocks 2023 is increased or decreased to adapt to tubular piles to be tested with different diameters, the connecting blocks can be directly fixed on the upper surface of the tubular pile to be tested when the inner diameter of the tubular pile is large, and the connecting blocks can be connected to the connecting blocks for use when the diameter of the tubular pile to be tested is small.

Further, in order to improve the adaptability of the connecting block, the through hole a20231 is a long strip-shaped waist hole.

Further, in order to enable the connecting block 2023 to be more stable when clamped, at least one transversely-arranged groove a20232 is formed in the upper surface of the connecting block 2023, at least one transversely-arranged groove B20233 is formed in the lower surface of the connecting block 2023, an annular boss a20211 matched with the groove a20232 is formed in the lower surface of the upper clamping plate 2021, and an annular boss B20221 matched with the groove B20233 is formed in the upper surface of the lower clamping plate 2022.

Furthermore, in order to better clamp the connecting block 2023, an annular boss C20212 is arranged at the center of the lower surface of the upper clamp plate 2021, the height of the annular boss C20212 is greater than the height of the annular boss a20211, a boss D20222 matched with the inner edge of the annular boss C20212 is arranged at the center of the lower clamp plate 2022, and when the connecting block 2023 is clamped by the upper clamp plate 2021 and the lower clamp plate 2022, one end of the connecting block 2023 abuts against the outer edge of the annular boss C20212.

Further scheme, in order to make the upper transverse plate can adapt to the jack of different producers, upper transverse plate 10 center is equipped with inside sunken multilayer round platform form recess E101, and recess E101 sets up with the upper transverse plate is concentric.

In a further scheme, in order to conveniently adjust the center of the upper transverse plate 10, a threaded through hole 102 is formed in the bottommost layer of the groove E101, a bolt 103 is connected to the threaded through hole 102 in an internal thread manner, and a ball is embedded in the lower end of the bolt 103.

The utility model discloses a working method as follows: firstly, the outer frame 201 is adjusted on the tubular pile to be tested, then a plurality of connecting blocks 2023 are fixedly connected with threaded holes on the tubular pile to be tested through bolts, the connecting blocks 2023 are clamped from the center through an upper clamping plate 2021 and a lower clamping plate 2022, an upper transverse plate 10 is built according to a conventional operation mode, the outer frame 201 and the upper transverse plate 10 are connected through a threaded rod 30, a jack is aligned to a concave groove E101 at the center of the upper transverse plate 10, the jack is arranged in a centering mode through balls at the bottom of a bolt 103, the bolt 103 is withdrawn in a centering mode, if a top cap is large, a steel sheet can be used for filling an upper gap, and relevant experiments are performed after adjustment is finished.

Claims

1. The utility model provides a vertical resistance to plucking static load test device of single pile, includes diaphragm (10), lower diaphragm (20), pass through threaded rod (30) fixed connection between diaphragm (10) and the lower diaphragm (20), characterized in that, diaphragm (20) down includes frame (201), connecting device (202) include punch holder (2021), lower plate (2022) and at least one connecting block (2023), both centers of punch holder (2021), lower plate (2022) pass through bolted connection, connecting block (2023) one end clamp is fixed in between punch holder (2021), lower plate (2022), be equipped with through-hole A (20231) that are used for inserting bolt fixed connection precast pile on connecting block (2023), frame (201) four corners is equipped with through-hole B (2011) that are used for connecting threaded rod (30), the center is equipped with through-hole C2012), through-hole C (2012) diameter is greater than lower plate (2022) diameter, is less than punch holder (2021), lower plate (2022) clamp the tight connecting block (2023) the back free end apart from length of connecting block (2022) the center.

2. The single-pile vertical uplift static load test device according to claim 1, is characterized in that: the through hole A (20231) is a long strip-shaped waist hole.

3. The single-pile vertical uplift static load test device according to claim 1, is characterized in that: the upper surface of the connecting block (2023) is provided with at least one transversely-arranged groove A (20232), the lower surface of the connecting block is provided with at least one transversely-arranged groove B (20233), the lower surface of the upper clamping plate (2021) is provided with an annular boss A (20211) matched with the groove A (20232), and the upper surface of the lower clamping plate (2022) is provided with an annular boss B (20221) matched with the groove B (20233).

4. The single-pile vertical uplift static load test device according to claim 3, wherein: the center of the lower surface of the upper clamp plate (2021) is provided with an annular boss C (20212), the height of the annular boss C (20212) is greater than that of the annular boss A (20211), the center of the lower clamp plate (2022) is provided with a boss D (20222) matched with the inner edge of the annular boss C (20212), and when the upper clamp plate (2021) and the lower clamp plate (2022) clamp the connecting block (2023), one end of the connecting block (2023) abuts against the outer edge of the annular boss C (20212).

5. The single-pile vertical uplift static load test device according to claim 1, is characterized in that: the center of the upper transverse plate (10) is provided with a plurality of layers of inwards sunken circular truncated cone-shaped grooves E (101).

6. The single-pile vertical uplift static load test device according to claim 5, wherein: the bottom layer of the groove E (101) is provided with a threaded through hole (102), the threaded through hole (102) is connected with a bolt (103) in an internal thread mode, and a ball is embedded into the lower end portion of the bolt (103).