CN205825965U - A kind of quickly measurement bridge pier column verticality measuring instrument - Google Patents

Abstract

The utility model belongs to the technical field of bridge engineering measuring equipment, in particular to a measuring instrument for quickly measuring the perpendicularity of bridge pier columns. It includes a test box and a data processing device; the test box is respectively provided with a laser transmitter and a photoelectric receiver above the bottom surface and below the top surface; The bottom surface of the measuring box is connected by a loose leaf; the bottom surface of the measuring box is also equipped with a circular level to adjust the level of the measuring instrument; a target plate is set on the photoelectric receiver, and the horizontal or vertical direction is obtained by using the change of the imaging center coordinates on the target plate. Displacement; the data processing device is connected with the photoelectric receiver through a cable. Compared with the prior art, the utility model can accurately measure the inclination of the structure within the test height range, and also has the characteristics of simple use, intuitive reading and the like.

Description

A fast measuring instrument for verticality of bridge piers

technical field

The utility model belongs to the technical field of bridge engineering measuring equipment, in particular to a measuring instrument for quickly measuring the perpendicularity of bridge pier columns.

Background technique

"Highway Engineering Quality Inspection and Evaluation Standard" JTG F80/1-2004 pointed out that the specified value or allowable deviation of the verticality or slope of the pier, abutment body and column, and double-wall pier body should be 0.3% H and not greater than 20mm (H is pier, platform height or pier body, column height). The current methods for testing the verticality (perpendicularity) of structures are as follows:

1. Perpendicular method

Test under the condition of no wind, hang the wire hammer along the test site of the structure, and after the wire hammer is stable, measure the horizontal distance a1 from the upper surface of the structure to the vertical line and the distance a1 from the lower surface to the vertical line within the test range with a measuring ruler. The horizontal distance a2, while measuring the height H of the structure within the test range.

2. Theodolite plumb method

Using the "plumb line" provided by the theodolite, use a steel ruler to "measure" the horizontal distance a1 from the upper surface of the structure to the "plumb line" and the horizontal distance a2 from the lower surface to the "plumb line" within the test range. The a1 and a2 values are read from the intersection of the "plumb line" in the instrument telescope and the steel ruler. Simultaneously measure the height H of the structures within the test range. To simplify the measurement, the "plumb line" can be coincident with the upper surface of the structure, ie a1=0.

3. Total station horizontal distance method

Set up a total station on the front of the structure test, and use the distance measuring function of the total station without prism to measure the horizontal distance a1 from the upper surface of the structure test range to the instrument, and the horizontal distance a2 from the lower surface to the instrument. At the same time, the total station can be used The instrument measures the height H of the structure within the test range.

Calculate the slope (inclination) of the structure within the test height range according to the two formulas ① and ②

D＝a1－a2 ①

B＝D/H×100 ②

In the formula: D——the inclination (inclination) of the structure within the test height range (mm);

B——The verticality (perpendicularity) (%) of the structure within the range of the test height, accurate to 0.01.

Among them, the vertical line method is easily affected by strong winds and the vertical pendulum takes a long time to stand still; the theodolite plumb method and the total station horizontal distance method require the use of theodolite or total station equipment, and the test process is complicated.

Contents of the invention

In order to solve the above technical problems, the utility model provides a convenient and accurate measuring instrument for quickly measuring the perpendicularity of bridge pier columns.

A kind of measuring instrument for quickly measuring the verticality of bridge pier columns described in the utility model, the measuring instrument includes a measuring box 1 and a data processing device 8; the measuring box 1 is respectively provided with a laser emitter 2 and a laser transmitter 2 above the bottom surface and below the top surface The photoelectric receiver 6; the opposite sides of the test box 1 are set as two standard test surfaces 5, and the standard test surface 5 is connected to the bottom surface of the test box through a loose leaf 4; the bottom surface of the test box 1 is also provided with a circular level 3, It is used to adjust the level of the measuring instrument; the photoelectric receiver 6 is provided with a target plate 7, and the change of the imaging center coordinates on the target plate 7 is used to obtain its lateral or longitudinal displacement; the data processing device 8 is connected to the photoelectric receiver 6 through a cable .

The utility model relates to a fast measuring instrument for measuring the perpendicularity of bridge pier columns, the measuring box 1 is a transparent box body, the shape is a cube frame, and the box body has four sides in total, the bottom surface, the top surface and two standard test surfaces. 5. The height of the cube is 100-150cm.

The utility model relates to a fast measuring instrument for measuring the perpendicularity of bridge pier columns, the standard test surface 5 and the bottom surface of the test box 1 are connected by a loose leaf 4, and relative movement can be realized between the two.

The utility model relates to a measuring instrument for quickly measuring the perpendicularity of bridge pier columns. The laser emitter 2 can continuously provide a safe and visible laser beam.

The utility model relates to a measuring instrument for quickly measuring the verticality of bridge pier columns. The circular level 3 is arranged on the bottom surface of the measuring box 1, and there is an air bubble 31 inside, which is used to adjust the level of the measuring instrument device.

The utility model relates to a fast measuring instrument for measuring the perpendicularity of bridge pier columns, the photoelectric receiver 6 adopts the principle of photoelectric conversion, and receives signals in a non-contact manner.

When in use, start the fast measuring instrument for measuring the verticality of bridge piers and columns, and perform self-calibration to ensure that the safe and visible laser beam emitted by the laser transmitter is irradiated to the center of the target plate of the photoelectric receiver, and the position displayed by the data processing device is 0. , at which point the self-calibration is complete. Secondly, put the standard test surface of the rapid measurement bridge pier verticality measuring instrument close to the measured pier column, and adjust the bottom of the test box through the loose-leaf to center the bubble in the circular level. At this time, the inclination angle of the standard test surface is the vertical angle of the pier column. The off-center position (inclination) of the laser beam on the photoelectric receiver target plate is read by the data processing device, and the inclination of the pier column is deduced by using the known height of the measuring box. In engineering applications, in order to improve the accuracy, it should be Multiple measurements were taken at different heights of the piers.

Compared with the prior art, the instrument for quickly measuring the verticality of bridge pier columns described in the utility model can accurately measure the inclination (inclination) of the structure within the range of the test height, and also has the advantages of simple use, easy reading intuitive features.

Description of drawings

Figure 1: Schematic diagram of the structure of the instrument for quickly measuring the verticality of bridge pier columns; measuring box-1, laser transmitter-2, circular level-3, bubble-31, leaflet-4, standard test surface-5, photoelectric receiver- 6. Target plate-7, data processing device-8.

detailed description

The rapid measuring instrument for measuring the perpendicularity of bridge piers and columns described in the utility model will be further described below in conjunction with specific embodiments, but the protection scope of the utility model is not limited thereto.

Example 1

A fast measuring instrument for measuring the verticality of bridge pier columns, the measuring instrument includes a measuring box 1 and a data processing device 8; the measuring box 1 is respectively provided with a laser transmitter 2 and a photoelectric receiver 6 above the bottom surface and below the top surface; Two standard test surfaces 5 are set on the opposite sides of the box 1, and the standard test surface 5 is connected to the bottom surface of the test box through a leaflet 4; the bottom surface of the test box 1 is also provided with a circular level 3, which is used to adjust the level of the measuring instrument The photoelectric receiver 6 is provided with a target plate 7, and its lateral or longitudinal displacement is obtained by using the change of the imaging center coordinates on the target plate 7; the data processing device 8 is connected with the photoelectric receiver 6 through a cable. Described measuring box 1 is a transparent box body, and the shape is a cube frame, and the box body has four sides altogether, bottom surface, top surface and two standard test surfaces 5, and the cube height is 150cm. The standard test surface 5 is connected with the bottom surface of the test box 1 through the hinge 4, and relative movement can be realized between the two. The laser emitter 2 can continuously provide a safe and visible laser beam. The circular level 3 is arranged on the bottom surface of the measuring box 1, and there is an air bubble 31 inside, which is used to adjust the level of the measuring instrument device. The photoelectric receiver 6 adopts the photoelectric conversion principle to receive signals in a non-contact manner.

Example 2

A measuring instrument for quickly measuring the verticality of bridge pier columns, the measuring instrument includes a measuring box 1 and a data processing device 8; the measuring box 1 is respectively provided with a laser transmitter 2 and a photoelectric receiver 6 above the bottom surface and below the top surface; Two standard test surfaces 5 are set on the opposite sides of the box 1, and the standard test surface 5 is connected to the bottom surface of the test box through a loose leaf 4; the bottom surface of the test box 1 is also provided with a circular level 3, which is used to adjust the level of the measuring instrument The photoelectric receiver 6 is provided with a target plate 7; the data processing device 8 processes the signal collected by the photoelectric receiver 6, and obtains its lateral or longitudinal displacement by the change of the imaging center coordinates on the target plate 7, and further utilizes the measuring box The known height of 1, find the verticality of the bridge pier column. Described measuring box 1 is a transparent box body, and the shape is a cube frame, and the box body has four sides altogether, bottom surface, top surface and two standard test surfaces 5, and the cube height is 100cm. The standard test surface 5 is connected with the bottom surface of the test box 1 through a hinge 4, and relative movement can be realized between the two. The laser emitter 2 can continuously provide a safe and visible laser beam. The circular level 3 is arranged on the bottom surface of the measuring box 1, and there is an air bubble 31 inside, which is used to adjust the level of the measuring instrument device. The photoelectric receiver 6 adopts the photoelectric conversion principle to receive signals in a non-contact manner. The data processing device 8 is connected with the photoelectric receiver 6 through a cable, and its lateral or longitudinal displacement is obtained by using the change of the imaging center coordinates on the target plate 7 .

When in use, start the fast measuring instrument for measuring the verticality of bridge piers and columns, and perform self-calibration to ensure that the safe and visible laser beam emitted by the laser transmitter is irradiated to the center of the target plate of the photoelectric receiver, and the position displayed by the data processing device is 0. , at which point the self-calibration is complete. Secondly, put the standard test surface of the rapid measurement bridge pier verticality measuring instrument close to the measured pier column, and adjust the bottom of the test box through the loose-leaf to center the bubble in the circular level. At this time, the inclination angle of the standard test surface is the vertical angle of the pier column. The off-center position (inclination) of the laser beam on the photoelectric receiver target plate is read by the data processing device, and the inclination of the pier column is deduced by using the known height of the measuring box. In engineering applications, in order to improve the accuracy, it should be Multiple measurements were taken at different heights of the piers.

Compared with the prior art, the instrument for quickly measuring the verticality of bridge pier columns described in the utility model can accurately measure the inclination (inclination) of the structure within the range of the test height, and also has the advantages of simple use, easy reading intuitive features.

Claims (6)

1. A fast measuring instrument for verticality of bridge pier columns, characterized in that, said measuring instrument comprises a measuring box (1) and a data processing device (8); the measuring box (1) is respectively arranged above the bottom surface and below the top surface There are laser transmitters (2) and photoelectric receivers (6); the test box (1) has its opposite sides set as two standard test surfaces (5), and the standard test surfaces (5) and the bottom surface of the test box pass through the loose-leaf (4) connection; the bottom surface of the measuring box (1) is also provided with a circular level (3), which is used to adjust the level of the measuring instrument; the photoelectric receiver (6) is provided with a target plate (7), and the target plate (7) is used to The change of the coordinates of the upper imaging center results in its lateral or longitudinal displacement; the data processing device (8) is connected with the photoelectric receiver (6) through a cable. 2. A kind of measuring instrument for quickly measuring the perpendicularity of bridge piers and columns according to claim 1, characterized in that, the measuring box (1) is a transparent box, shaped as a cube frame, and the box has four sides in total, and the bottom surface , top surface and two standard test surfaces (5), the cube height is 100-150cm. 3. a kind of fast measuring bridge pier verticality measuring instrument according to claim 1, is characterized in that, the bottom surface of described standard test surface (5) and measuring box (1) is connected by loose-leaf (4), both Relative movement can be realized between them. 4. The instrument for quickly measuring the perpendicularity of bridge pier columns according to claim 1, characterized in that, the laser emitter (2) can continuously provide a safe and visible laser beam. 5. A kind of measuring instrument for quickly measuring the perpendicularity of bridge pier columns according to claim 1, characterized in that, the circular level (3) is arranged on the bottom surface of the measuring box (1), and there are air bubbles (31) inside, which are used to Used to adjust the level of the measuring instrument device. 6. The instrument for quickly measuring the perpendicularity of bridge pier columns according to claim 1, characterized in that the photoelectric receiver (6) adopts the principle of photoelectric conversion to receive signals in a non-contact manner.