CN214702223U - Static level gauge engineering installation structure for monitoring inclined settlement - Google Patents
Static level gauge engineering installation structure for monitoring inclined settlement Download PDFInfo
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- CN214702223U CN214702223U CN202120866427.5U CN202120866427U CN214702223U CN 214702223 U CN214702223 U CN 214702223U CN 202120866427 U CN202120866427 U CN 202120866427U CN 214702223 U CN214702223 U CN 214702223U
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Abstract
The utility model relates to a hydrostatic level engineering mounting structure for monitoring inclined settlement, which belongs to the technical field of engineering monitoring and comprises a mounting back plate and a mounting base, wherein the mounting back plate and the mounting base are vertical to each other; the mounting back plate or the mounting base is vertically and fixedly provided with a mounting bracket; the mounting bracket comprises a top plate parallel to the mounting base, and the static water level is hung on the bottom surface of the top plate. The static level gauge is suspended and installed by additionally installing the installation support, so that the static level gauge is always vertical to the ground under the action of gravity and is not influenced by the settlement and inclination of the structure to be measured, and the inclination error is eliminated; the utility model discloses simple structure, simple to operate and the effect is showing.
Description
Technical Field
The utility model belongs to the technical field of the engineering monitoring, in particular to hydrostatic level engineering mounting structure for monitoring the slope subsides, mainly used eliminates the slope error.
Background
Due to the large space span of the high-speed railway, different settlement forms can be generated under different geological conditions, and the settlement of some high-speed railway subgrade piers, high-speed railway tunnels and the like is accompanied by inclination which can be superposed into the settlement result as an error. Therefore, the inclination effect is eliminated, the accurate measurement of the related parameters of the high-speed iron infrastructure is realized, and the method is a premise for comparing with total station data, and has important engineering practice significance for ensuring the long-term safe operation of the high-speed railway.
The precise leveling is to establish a reference for elevation control by using bedrock leveling points, deep-buried leveling points and the like, then to arrange required leveling points along a line as required, and to connect the measuring points by using water pipes to form a communicating vessel principle, and to calculate the settlement of each point relative to the reference by measuring the liquid level height of each point. The liquid level height measuring method can be divided into: electrical vibrating wire type, resistance pressure sensing type, Fiber Bragg Grating (FBG), ultrasonic type, and the like. The settlement measurement accuracy of the vibration string type and the voltage force type is 1mm, and the FBG type measurement accuracy is greatly influenced by the self weight of the floater and is generally on the level of centimeters. In addition, the measuring precision can reach 0.1mm based on the principle of imaging technology (CCD), although the settlement measuring point can reach 32 points or more, and the network connection is easy. However, due to the adoption of electric signal transmission, the monitoring of the large-space span foundation such as a high-speed railway is difficult to be competent, and the following principles are described:
the electric vibration string type is based on a string which penetrates through a measuring point container from top to bottom, the resonance frequency of the string can be influenced by different liquid level heights in the container, liquid level height information is obtained by finely analyzing the change of the resonance frequency, and the measuring precision of the method is generally 0.5 mm.
The resistance pressure sensing type generally uses a spring and a cantilever beam which are connected in series as an elastic element, four strain gauges are pasted on the front and back surfaces of the root of the cantilever beam with a rectangular interface and form a full-bridge current, one end of an extension spring is connected with a measuring rod, when the measuring rod produces displacement along with a test piece, the spring is driven to enable the root of the cantilever beam to be bent, and the strain produced by bending is in a linear relation with the displacement of the measuring rod. The measuring range of the sensor is generally between 0.1 mu m and 0.1mm, and the measuring precision of the sensor is less than 2 percent.
The basic working principle is that the displacement measurement is carried out by utilizing the moire fringe phenomenon of the metering grating, and the displacement measurement device is generally composed of a light source, a scale grating and a photoelectric device. The measurement range of the grating is 0.001 mm-10 m, the measurement precision is 3 mu m/m, but the grating is sensitive to the working environment and is easily influenced by oil stains and dust.
The ultrasonic type is manufactured by using a reflection characteristic of an ultrasonic wave at an interface between two media. If the time interval from the start of the transmission of the ultrasonic pulse to the reception of the transmitted wave by the receiving transducer is known, the position of the interface can be determined and the object measured. Generally, the propagation velocity V of the ultrasonic wave in the air is mainly related to the temperature T, i.e., V =331.5+0.607T, and the measured distance can be obtained by recording the time from the transmission to the reception of the ultrasonic wave. The measuring range of the sensor is 60 mm-1000 mm, and the measuring precision of the sensor is 0.3%.
The liquid level demodulation method of the prior static level gauge assumes that the liquid level is horizontal, as shown in fig. 1, which requires horizontal correction during installation. However, if the inclination occurs during the actual sedimentation, the inclination is directly superimposed on the sedimentation as shown in fig. 2, thereby causing an inclination error.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the technical problem that exists among the known art and provide a hydrostatic level engineering mounting structure for monitoring the slope subsides, can eliminate the slope error that leads to because of the structure subsides under the current mounting means.
The utility model comprises the following technical scheme: a static level engineering mounting structure for monitoring inclined settlement comprises a mounting back plate and a mounting base, wherein the mounting back plate and the mounting base are perpendicular to each other; the mounting back plate or the mounting base is vertically and fixedly provided with a mounting bracket; the mounting bracket comprises a top plate parallel to the mounting base, and the static water level is hung on the bottom surface of the top plate.
Preferably, the middle part of the top surface of the hydrostatic level is suspended in the middle part of the bottom surface of the top plate through a mounting ring and a connecting rope, so that the hydrostatic level can be always vertical to the ground under the action of gravity.
Preferably, the height of the mounting bracket is greater than the sum of the height of the hydrostatic level, the diameter of the mounting ring and the length of the connecting rope, so that the hydrostatic level can be in a suspended state.
Preferably, the mounting bracket is of a cube structure or a cuboid structure.
Preferably, the mounting back plate is fixedly mounted on the side surface of the structure to be tested, and the mounting base is fixedly mounted on the mounting back plate.
Preferably, the inclination angle of the structure to be measured is as follows.
Preferably, an inclined support is arranged between the mounting base and the mounting back plate.
The utility model has the advantages and positive effect:
1. the utility model discloses an install the installing support additional and make hydrostatic level suspend the installation in midair to perpendicular to ground all the time under the action of gravity, hydrostatic level does not receive the settlement slope influence of the structure that awaits measuring, thereby eliminates the slope error.
2. The utility model discloses simple structure, simple to operate and the effect is showing.
Drawings
FIG. 1 is a schematic cross-sectional view of a prior art mounting structure in an idealized state;
FIG. 2 is a schematic sectional view of a prior art mounting structure in an actual state;
fig. 3 is a schematic cross-sectional view of the ideal state of the present invention;
fig. 4 is a schematic sectional view of the actual state of the present invention;
in the drawings, 1-mounting a back plate; 2-installing a base; 3-a structure to be tested; 4-oblique supporting; 5-fixing screws; 6, mounting a bracket; 61-a top plate; 7-a hydrostatic level; 8-mounting a ring; 9-connecting rope.
FIG. 5 is a schematic diagram of the variation of liquid level height at different tilt angles according to the present patent;
in the figure, the vertical axis: liquid level height variation (in microns, based on white light interference measurement data); horizontal axis: the angle of inclination changes (in degrees).
Detailed Description
To further disclose the contents, features and functions of the present invention, the following examples are given in detail with reference to the accompanying drawings.
Example (b): referring to fig. 3-4, the static level engineering installation structure for monitoring the inclined settlement comprises an installation backboard 1 and an installation base 2, wherein the installation backboard 1 and the installation base 2 are perpendicular to each other; the mounting back plate 1 is fixedly arranged on the side surface of the structure to be tested 3 through a fixing screw 5, and the inclination angle of the structure to be tested is as follows.
The mounting bracket 6 is vertically and fixedly mounted on the mounting back plate 1; the mounting base 2 is fixedly arranged on the mounting back plate 1. An inclined support 4 is arranged between the mounting base 2 and the mounting backboard 1.
The hydrostatic level 7 is hung on the bottom surface of the top plate 61, and the middle part of the top surface of the hydrostatic level 7 is hung on the middle part of the bottom surface of the top plate 61 through the mounting ring 8 and the connecting rope 9, so that the hydrostatic level 7 can be ensured to be perpendicular to the ground all the time under the action of gravity.
The mounting bracket 6 comprises a top plate 61 parallel to the mounting base 2, and the mounting bracket 6 is of a cuboid structure. The height of the mounting bracket 6 is greater than the sum of the height of the hydrostatic level 7, the diameter of the mounting ring 8 and the length of the connecting rope 9, so that the hydrostatic level 7 can be in a suspended state.
The laboratory has designed one set of analogue means, and the simulation actual slope takes place and the relation of error, as shown in fig. 5, the design of this patent can reach 0.5 mm's whole error requirement in the region that the dotted line square is shown, and the inclination that corresponds the structure that awaits measuring does.
Although the preferred embodiments of the present invention have been described, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention. All of which fall within the scope of the present invention.
Claims (7)
1. The utility model provides a hydrostatic level engineering mounting structure for monitoring slope is subsided, includes installation backplate and installation base, its characterized in that: the mounting backboard and the mounting base are perpendicular to each other; the mounting back plate or the mounting base is vertically and fixedly provided with a mounting bracket; the mounting bracket comprises a top plate parallel to the mounting base, and the static water level is hung on the bottom surface of the top plate.
2. An engineering installation of a hydrostatic level for monitoring inclined settlement according to claim 1, wherein: the middle part of the top surface of the static level gauge is suspended in the middle part of the bottom surface of the top plate through a mounting ring and a connecting rope.
3. An engineering installation of a hydrostatic level for monitoring inclined settlement according to claim 1, wherein: the height of the mounting bracket is greater than the sum of the height of the static level gauge, the diameter of the mounting ring and the length of the connecting rope.
4. An engineering installation of a hydrostatic level for monitoring inclined settlement according to claim 1, wherein: the mounting bracket is of a cube structure or a cuboid structure.
5. An engineering installation of a hydrostatic level for monitoring inclined settlement according to claim 1, wherein: the mounting back plate is fixedly arranged on the side surface of the structure to be tested, and the mounting base is fixedly arranged on the mounting back plate.
6. An engineering installation of a hydrostatic level for monitoring inclined settlement according to claim 5, wherein: the inclination angle of the structure to be measured is as follows.
7. An engineering installation of a hydrostatic level for monitoring inclined settlement according to claim 5, wherein: an inclined support is arranged between the mounting base and the mounting back plate.
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CN202120866427.5U CN214702223U (en) | 2021-04-26 | 2021-04-26 | Static level gauge engineering installation structure for monitoring inclined settlement |
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CN202120866427.5U CN214702223U (en) | 2021-04-26 | 2021-04-26 | Static level gauge engineering installation structure for monitoring inclined settlement |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115492075A (en) * | 2022-09-23 | 2022-12-20 | 苏悦 | Assembly type building foundation settlement monitoring system |
CN116045915A (en) * | 2023-04-03 | 2023-05-02 | 成都零一通途科技有限公司 | Slope monitoring device and method |
-
2021
- 2021-04-26 CN CN202120866427.5U patent/CN214702223U/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115492075A (en) * | 2022-09-23 | 2022-12-20 | 苏悦 | Assembly type building foundation settlement monitoring system |
CN116045915A (en) * | 2023-04-03 | 2023-05-02 | 成都零一通途科技有限公司 | Slope monitoring device and method |
CN116045915B (en) * | 2023-04-03 | 2023-10-10 | 成都零一通途科技有限公司 | Slope monitoring device and method |
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