CN216449492U

CN216449492U - Low-strain reflection wave method excitation point and detection point rapid positioning device

Info

Publication number: CN216449492U
Application number: CN202123041812.5U
Authority: CN
Inventors: 陈朋; 惠冰; 张文俊; 刘广波; 马明畅; 邢晓丽; 王翠雪; 王琳
Original assignee: Shandong Transportation Institute
Current assignee: Shandong Transportation Institute
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-05-06
Anticipated expiration: 2031-12-06

Abstract

The utility model relates to the field of foundation engineering, and particularly provides a device for quickly positioning an excitation point and a detection point by a low-strain reflection wave method. Compared with the prior art, the utility model enables the circular piece in the device to be overlapped with the pile center by adjusting the transverse adjuster on the inner support according to the size of the pile diameter, and the position of the circular ring is the position of the excitation point, so that the position of the excitation point can be quickly found. Because the positions of the excitation point and the detection point are opposite, the positions of the detection points can be quickly found, and the accuracy of detecting the integrity of the pile foundation is improved.

Description

Low-strain reflection wave method excitation point and detection point rapid positioning device

Technical Field

The utility model relates to the field of foundation engineering, and particularly provides a device for quickly positioning an excitation point and a detection point by using a low-strain reflection wave method.

Background

In the process of detecting the integrity of the pile body of the concrete cast-in-place pile on the highway, the quality of the top surface condition of the detected pile directly influences the quality of a test signal and the accuracy of judging the integrity of the pile body, so that the quality and the section size of the concrete on the top surface of the detected pile are required to be basically the same as the design conditions of the pile body.

And cleaning the concrete before detection to expose the hard fresh concrete surface. Need polish hard and fresh concrete surface, receive the influence of on-the-spot measuring environment, the position of excitation point can't be fixed a position accurately (the accurate location requirement of excitation point is apart from stake center 2/3 radius department).

In the actual detection process, the determination of the position of the excitation point and the magnitude of the excitation force of the force hammer have direct influence on the accuracy of reflected wave acquisition and have direct relation with the detection speed.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the device for quickly positioning the excitation point and the detection point by using the low-strain reflection wave method, which has the advantages of reasonable design, simple structure and safe and quick use.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

the wafer is located at the center and is connected with three equal-length inner supports located in the same plane, included angles between the inner supports are 120 degrees, and the three inner supports are connected to the inside of the outer frame.

Furthermore, each inner support is provided with a transverse adjuster, and the transverse adjuster is provided with a universal movable pulley.

Furthermore, the distance between the universal movable pulley and the bottom surface of the inner support is 3-5cm, and the height of the universal movable pulley on each transverse regulator is flush.

Furthermore, each inner support is provided with scale marks.

Furthermore, the outer frame is triangular, and three angles of the triangular outer frame are respectively connected with the three inner supports.

Furthermore, stiffening sections are respectively arranged on three inner corners in the triangular frame, a fixing ring is arranged in the middle of each stiffening section, and the inner support is hung in the fixing ring through a hook.

Furthermore, the three angular points of the triangular outer frame and the outer side of the stiffening section are provided with circular rings, and the circular rings are fixedly connected with the triangular outer frame.

Preferably, the straight line distance from the fixing ring to the center of the circular ring is 18-22 cm.

Preferably, the diameter of the circular ring is 10-15 cm.

Compared with the prior art, the device for quickly positioning the excitation point and the detection point by the low-strain reflection wave method has the following outstanding beneficial effects:

according to the utility model, the circular piece in the device is overlapped with the pile center by adjusting the transverse adjuster on the inner support according to the size of the pile diameter, and the position of the circular ring is the position of the excitation point, so that the position of the excitation point can be quickly found. Because the positions of the excitation point and the detection point are similar, the position of the detection point can be quickly found, and the accuracy of detecting the integrity of the pile foundation is improved.

In conclusion, the utility model has the advantages of reasonable design, simple structure, easy processing, small volume, convenient and fast use and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a device for quickly positioning excitation points and detection points by a low-strain reflection wave method;

FIG. 2 is a schematic diagram of an outer frame of a device for quickly positioning excitation points and detection points by a low-strain reflection wave method;

FIG. 3 is a schematic diagram of an inner support in a low-strain reflection wave method excitation point and detection point rapid positioning device;

FIG. 4 is a schematic structural diagram of a transverse regulator in a low-strain reflection wave method excitation point and detection point rapid positioning device;

FIG. 5 is a schematic view of a universal movable pulley in a device for rapidly positioning an excitation point and a detection point by a low-strain reflection wave method.

The reference numerals in the drawings denote:

1. pile head, 2, ring, 3, outer frame, 4, stiffening section, 5, inner support, 6, disk, 7, transverse adjuster, 8, universal movable pulley, 9 and fixing ring.

Detailed Description

The utility model is further described with reference to the following figures and specific examples, which are not intended to be limiting.

In the present invention, the use of directional terms such as "upper, lower, left, right" generally means upper, lower, left, right as viewed with reference to the accompanying drawings, unless otherwise specified; "inner and outer" refer to the inner and outer relative to the profile of the components themselves.

A preferred embodiment is given below:

as shown in fig. 1 to 5, the device for quickly positioning the excitation point and the detection point by the low-strain reflection method in the present embodiment includes a wafer 6 and an outer frame 3, wherein the wafer 6 is located at a central position and is welded with three equal inner supports 5 located in the same plane, and an included angle between adjacent inner supports 5 is 120 °. Three inner supports 5 are connected to the inside of the outer frame 3.

The outer frame 3 is triangular, the three inner corners in the triangular outer frame 3 are respectively provided with a stiffening section 4, the middle position of the stiffening section 4 is provided with a fixing ring 9, and the inner support 5 is hung in the fixing ring 9 through a hook.

The three angular points of the triangular outer frame 3 and the outer sides of the stiffening sections 4 are respectively provided with a circular ring 2, and the circular rings 2 are welded with the triangular outer frame 3.

The straight line distance from the fixing ring 9 to the center of the circular ring 2 in the embodiment is 20cm, and the diameter of the circular ring 2 is 12 cm.

Each inner support 5 is provided with a transverse adjuster 7, and four sides of each transverse adjuster 7 are provided with a group of universal movable pulleys 8. The universal movable pulley 8 is 3-5cm away from the bottom surface of the inner support 5, and the height of the universal movable pulley 8 on each transverse regulator 7 is flush. Wherein, each inner support 5 is provided with scale marks.

When the low-strain reflection wave method excitation point and detection point quick positioning device is used, the device accurately aligns the wafer 6 to the pile center of the pile head 1 through the universal movable pulley 8, and the length of the inner support 5 is the radius of the pile center 2/3 by adjusting the transverse adjuster 7 on the inner support 5 according to the size of the pile diameter. A triangular outer frame 3 is additionally arranged, and stiffening sections 4 are respectively arranged on three inner angles in the triangular outer frame 3, so that the torsion resistance of the whole device is enhanced.

The inner support 5 is stretched and adjusted through the transverse adjuster 7, and the method is suitable for determining the positions of the excitation point and the detection point of foundation piles with different diameters. The diameter of the circular ring 2 is 12cm, and the requirement of the existing building pile foundation detection technical specification is met.

After the pile center of the pile head 1 is superposed with the circular sheet 6 of the device, the excitation points are three points at the circular ring, and the excitation points and the detection points can be quickly and accurately found by using the device.

The above-described embodiment is only one of the preferred embodiments of the present invention, and general changes and substitutions by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The device is characterized by comprising a wafer and an outer frame, wherein the wafer is located at the center and is connected with three equal inner supports located in the same plane, included angles between the adjacent inner supports are 120 degrees, and the three inner supports are connected to the inside of the outer frame.

2. The device for rapidly positioning the excitation point and the detection point by the low-strain reflection method as claimed in claim 1, wherein each inner support is provided with a transverse adjuster, and the transverse adjuster is provided with a universal movable pulley.

3. The device for rapidly positioning the excitation point and the detection point of the low-strain reflection method as claimed in claim 2, wherein the universal movable pulley is 3-5cm away from the bottom surface of the inner support, and the height of the universal movable pulley on each transverse adjuster is flush.

4. The device as claimed in claim 3, wherein each of the inner supports has graduation marks.

5. The device for rapidly positioning the excitation point and the detection point by the low-strain reflection method as claimed in claim 1, wherein the outer frame is triangular, and three angles of the triangular outer frame are respectively connected with three inner supports.

6. The device for rapidly positioning the excitation point and the detection point by the low-strain reflection method as claimed in claim 5, wherein a stiffening section is disposed on each of three inner corners of the triangular frame, a fixing ring is disposed in the middle of the stiffening section, and the inner support is hung in the fixing ring by a hook.

7. The device for rapidly positioning the excitation point and the detection point by the low-strain reflection method as claimed in claim 6, wherein the three corner points of the triangular outer frame and the outer side of the stiffening section are provided with circular rings, and the circular rings are fixedly connected with the triangular outer frame.

8. The device for rapidly positioning the excitation point and the detection point of the low-strain reflection method as claimed in claim 7, wherein the linear distance from the fixing ring to the center of the circular ring is 18-22 cm.

9. The device for rapidly positioning the excitation point and the detection point of the low-strain reflection method as claimed in claim 8, wherein the diameter of the ring is 10-15 cm.