A measuring device and method for positioning an assembled guide wall

Abstract

The present invention relates to a measuring device and method for locating an assembled guide wall, comprising a distance measuring device and a slope displacement monitoring device. The distance measuring device comprises an angle dial device mounted on a tripod, a laser line transmitter and a reflective patch mounted on the angle dial device via a graduated telescopic rod, and a rangefinder mounted in the middle of the graduated telescopic rod of the distance measuring device. The slope displacement monitoring device comprises a GNSS device mounted on the top of a vertical pole for staking out the location of a groove reference point. The vertical pole is connected to a simple tripod in the middle, and the laser line transmitter and the reflective patch are connected to the lower part via a graduated telescopic rod. A prism is mounted in the middle of the graduated telescopic rod of the slope displacement monitoring device. The present invention is simple to operate, saves a lot of manpower, effectively reduces repeated measurement and staking, and significantly increases the speed of staking out. It can solve the problem of forgetting and losing the groove edge line and can continuously and real-timely stake out. The method is less affected by environmental factors, significantly improves the efficiency of staking out verification, and reduces the waste of engineering time.

Description

Technical Field

[0001] The present invention relates to ground wall construction measurement, and in particular to a measuring device and method for assembling guide wall positioning. Background Art

[0002] With the continuous acceleration of urban construction, foundation pit projects are increasing in number. Before excavation begins, underground continuous walls must be constructed to reinforce the pit. The datum for the underground continuous wall is the guide wall, and the plane coordinate position of the guide wall determines the plane coordinate position of the underground continuous wall. Therefore, the guide wall's layout measurement must be accurate and precise. When measuring the guide wall, straight segments can extend the layout distance. When constructing a polygonal foundation pit, each pile position must be detailed and laid out using a total station. From station setup to data input and then to layout, the measurement and layout of each underground guide wall takes a considerable amount of time. In polygonal construction, slow layout can easily lead to construction interruptions, large machinery idleness, time-consuming and labor-intensive work, and increased construction costs, directly affecting the project progress. Currently, guide wall construction requires measuring and staking out the guide wall's edge or centerline. After the layout measurement is completed, a scattering line or a piece of woolen thread is usually used to fix the outline of the structure. After completion, large-scale machinery will enter the site to excavate the trench. During the excavation process, many unfavorable factors will be encountered, which will lead to the phenomenon of forgetting and losing the trench line shape. At this time, it is necessary to re-measure and stake out points, which makes repeated measurement and stakeout tedious and requires a large investment of manpower and material resources. When the trench excavation is completed, it is necessary to review whether the trench line shape meets the requirements and whether there is over-excavation or under-excavation. Multiple measurements and stakeout reviews are required, which affects the construction progress. Therefore, how to provide a foundation pit project that can be applied to the excavation of guide wall trenches, which can solve the problem of forgetting and losing the trench edge line, continuous real-time stakeout, and easy installation and operation has become an urgent technical problem in this field. Summary of the Invention

[0003] The present invention aims to solve the above-mentioned shortcomings of the surveying technology and provide a fast surveying device and method for reducing the surveying time of underground continuous wall guide wall construction and accelerating the construction progress.

[0004] The present invention is achieved through the following technical solutions:

[0005] A measuring device for assembled guide wall positioning consists of a distance measuring device and a slope displacement monitoring device. The angle turntable device in the distance measuring device is installed on a tripod. A laser line transmitter and a reflective patch are installed on the angle turntable device via a scale telescopic rod. A rangefinder is installed in the middle of the scale telescopic rod in the distance measuring device. The GNSS in the slope displacement monitoring device is installed on the top of a vertical pole for staking out the position of a groove reference point. A simple tripod is connected to the middle of the vertical pole. The lower part of the vertical pole is connected to the laser line transmitter and the reflective patch via a scale telescopic rod. A prism is installed in the middle of the scale telescopic rod in the slope displacement monitoring device.

[0006] Furthermore, the tripod is used to support, adjust and fix the angle turntable device, so as to always ensure that the angle turntable device is level and the center is aligned with the groove reference point.

[0007] Furthermore, the angle turntable device is divided into two parts, the upper and lower parts can rotate freely coaxially. The upper turntable is used to support the fixed scale telescopic rod; the lower turntable is engraved with 0°, 90°, 180°, and 270° and can rotate freely to align with the aiming direction. It also has a horizontal bubble and a centering device for adjusting the horizontal centering reference point.

[0008] Furthermore, the laser line transmitter is installed at both ends of the scale telescopic rod, the laser line transmitter is spirally connected to the scale telescopic rod, and the laser line transmitter can be rotated up and down to aim and project the edge line of the guide wall.

[0009] Furthermore, the reflective patch is installed at both ends of the scale telescopic rod, and the center of the reflective patch is aligned with the center of the laser line transmitter. The reflective patch is used to receive the light beam emitted by the laser line transmitter and locate the groove edge line.

[0010] Furthermore, the graduated telescopic rod and the angle turntable device are fixed by a rotating nut to ensure that the zero scale line of the telescopic rod is always aligned with the center of the angle turntable device, and the two ends of the telescopic rod are equidistant for measuring the guide wall width.

[0011] Furthermore, after the distance meter is installed in the middle of the scale telescopic rod, the center is aligned with the zero scale and is used to measure the distance between two points.

[0012] Furthermore, the vertical pole is spirally connected to the scale telescopic rod, and the vertical pole is provided with a horizontal bubble for adjusting the verticality of the vertical pole. The vertical pole is used for GNSS to lay out the position of the tripod centering groove reference point.

[0013] Furthermore, after the prism is installed in the middle of the scale telescopic rod, the center is aligned with the zero scale, which is used to measure the distance between the rangefinder and the prism.

[0014] A method for measuring the positioning of an assembled guide wall, using a measuring device for the positioning of an assembled guide wall, specifically comprising the following steps:

[0015] 1) First, measure the fixed point P using GNSS surveying. Set up a tripod at the fixed point P and install the angle dial device on the top of the tripod. Adjust the tripod so that the level bubble on the angle dial device is centered. At the same time, adjust the angle dial device so that its center point is aligned with the fixed point P. Tighten the tripod bolts to secure the angle dial device.

[0016] 2) Install the scale telescopic rod on the upper part of the angle turntable base and tighten the fixing screws. Adjust the length of the scale telescopic rod according to the width of the guide wall groove. Install the laser line transmitter and reflective patch on both ends of the scale telescopic rod. Adjust the length of the scale telescopic rod again to ensure that the center projection of the laser line transmitter and reflective patch coincides with the edge of the guide wall groove.

[0017] 3) Install a graduated telescopic rod at the bottom of the pole, install the laser line transmitter and reflective patch at both ends of the graduated telescopic rod, use GNSS to stake out the positions of movable points A and B, adjust the horizontal bubble of the pole to the center, fix the pole with a simple tripod bracket, and adjust the length of the graduated telescopic rod to the same width as the guide wall groove. The center projections of the laser line transmitter and reflective patch coincide with the edge of the guide wall groove.

[0018] 4) The distance meter is installed at the center of the scale telescopic device at the fixed point P, and the prism is installed at the center of the scale telescopic rod at the movable points A and B to measure the distance between PA and PB.

[0019] 5) Adjust the angle turntable device of the fixed point P so that the laser line transmitter at the fixed point P is roughly aligned with the reflective patch at the moving point B. Turn on the laser line transmitter at the fixed point P and accurately aim at the center of the reflective patch. At this time, the light beam emitted by the laser line transmitter is the edge line of the guide wall groove. When the distance is far, turn on the laser line transmitter at the moving point B to increase the light beam aiming intensity of the guide wall groove edge line. The guide wall groove is excavated according to the edge line emitted by the laser.

[0020] 6) The ground line aimed by the laser emission is the edge line of the guide wall trench to be excavated. Depending on the on-site construction conditions, excavation can be carried out on one side or on both sides at the same time.

[0021] The beneficial effects of the present invention are:

[0022] The assembled guide wall positioning and measuring device and method of the present invention are simple to operate, save a lot of manpower, effectively reduce repeated measurement and layout, and greatly improve the layout speed. It can solve the problem of forgetting and losing the groove edge line and continuous real-time layout. The method is less affected by environmental factors, the layout review efficiency is significantly improved, and the waste of engineering time is reduced. It has positive significance for improving engineering accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the use and setting of the assembled guide wall positioning and measuring device of the present invention;

[0024] Figure 2 is a schematic diagram of a distance measuring device of the present invention;

[0025] Figure 3 is a schematic diagram of a slope displacement monitoring device of the present invention;

[0026] Figure 4 is a flow chart of the assembled guide wall positioning and measurement method of the present invention;

[0027] In the picture: 1. Tripod, 2. Angle turntable device, 3. Level bubble of angle turntable device, 4. Laser line transmitter, 5. Reflective patch, 6. Scale telescopic rod, 7. Scale telescopic rod adjustment screw, 8. Scale telescopic rod fixing screw, 9. Rangefinder, 10. Rangefinder fixing screw, 11. Pole, 12. Prism, 13. Prism fixing screw, 14. Simple tripod, 15. Pole level bubble, 16. GNSS (slope displacement monitor). DETAILED DESCRIPTION

[0028] The following will further describe in detail a method for positioning and measuring an assembled guide wall according to the present invention with reference to the accompanying drawings.

[0029] like Figures 1 to 3 As shown, the assembled guide wall positioning measurement device of the present invention comprises a distance measuring device and a slope displacement monitoring device. Specifically, it includes: a tripod 1, an angle dial device 2, a bubble level 3, a laser line transmitter 4, a reflective patch 5, a graduated telescopic rod 6, a graduated telescopic rod adjustment screw 7, a graduated telescopic rod fixing screw 8, a rangefinder 9, a rangefinder fixing screw 10, a vertical pole 11, a prism 12, a prism fixing screw 13, a simple tripod 14, a vertical pole bubble level 15, and a GNSS 16.

[0030] In the distance measuring device: the tripod 1 is used to support, adjust, and fix the angle turntable device 2, ensuring that the angle turntable device 2 is always horizontal and the center is aligned with the groove reference point. The angle turntable device 2 is divided into two parts, the upper and lower parts, which can rotate freely coaxially. The upper turntable is used to support and fix the scale telescopic rod 6. The lower turntable is engraved with 0°, 90°, 180°, and 270° and can be freely rotated to align with the aiming direction. It also has a horizontal bubble 3 and a centering device for adjusting the horizontal centering reference point. The angle turntable device 2 is installed on the tripod 1. The laser line transmitter 4 is installed at both ends of the scale telescopic rod 6. The laser line transmitter 4 is spirally connected to the scale telescopic rod 6. The laser line transmitter 4 can rotate up and down and is used to aim at the edge of the projected guide wall. The reflective patch 5 is installed at both ends of the scale telescopic rod 6. The center of the reflective patch 5 is aligned with the center of the laser line transmitter 4. The reflective patch 5 is used to receive the light beam emitted by the laser line transmitter 4 to locate the groove edge. A graduated telescopic rod 6 is mounted above the angle dial assembly 2. A rotating nut secures the rod 6 to the angle dial assembly 2, ensuring that the rod's zero mark is always aligned with the center of the angle dial assembly 2. The rod's ends are equidistant from each other, allowing for measuring guide wall width. A rangefinder 9 is mounted in the middle of the graduated telescopic rod 6, with its center aligned with the zero mark, allowing for measuring the distance between two points.

[0031] In the slope displacement monitoring device, a GNSS 16 is mounted on top of a vertical pole 11, while a scale telescopic rod 6 is screwed to the bottom of the pole 11. A level bubble 15 is provided on the vertical pole 11 to adjust its verticality. The vertical pole 11 is used by the GNSS 16 to stake out the location of the groove reference point centered on the tripod 1. A prism 12 is mounted in the middle of the scale telescopic rod 6, with its center aligned with the zero scale. This prism is used to measure the distance from the rangefinder 9 to the prism. A simple tripod 14 is supported in the middle of the vertical pole 11 to provide stability for the GNSS 16, the vertical pole 11, and the scale telescopic rod 6. The GNSS 16 is mounted on top of the vertical pole 11 to stake out the location of the groove reference point.

[0032] Preferably, a rangefinder 9 or a prism 12 is installed in the middle of the scale telescopic rod 6, without distinguishing between them, and reflective patches 5 are installed at both ends of the scale telescopic rod 6 for receiving the light beams emitted by the laser projection transmitter 4 between them.

[0033] like Figure 4 As shown, the measurement method for positioning the assembled guide wall of the present invention comprises the following specific steps:

[0034] 1) If Figure 1 , as shown in Figure 2, first use GNSS16 to measure the fixed point P, set up the tripod 1 at the fixed point P, install the angle turntable device 2 on the upper part of the tripod 1, adjust the tripod 1 so that the angle turntable device level bubble 3 on the angle turntable base 2 is centered, and at the same time adjust the angle turntable base 2 so that its center point is aligned with the fixed point P, and tighten the tripod 1 bolts to fix the angle turntable device 2.

[0035] 2) If Figure 2 As shown, install the scale telescopic rod 6 on the upper part of the angle turntable base 2 and tighten the fixing screws 8. Adjust the length of the scale telescopic rod 6 according to the width of the guide wall groove. After the width adjustment is completed, tighten the scale telescopic rod fixing screws 7. Install the laser line transmitter 4 and the reflective patch 5 at both ends of the scale telescopic rod 6. Fine-tune the length of the scale telescopic rod 6 again to ensure that the center projections of the laser line transmitter 4 and the reflective patch 5 coincide with the edge line of the guide wall groove.

[0036] 3) If Figure 3 As shown, a graduated telescopic rod 6 is installed at the lower part of the vertical pole 11, and the laser line transmitter 4 and the reflective patch 5 are installed at both ends of the graduated telescopic rod 6. The positions of the moving points A and B are laid out by GNSS16, and the horizontal bubble 15 of the vertical pole is adjusted to be centered. The vertical pole 11 is fixed with a simple bracket 14, and the length of the graduated telescopic rod 6 is adjusted to be the same as the width of the guide wall groove. The center projections of the laser line transmitter 4 and the reflective patch 5 coincide with the edge line of the guide wall groove.

[0037] 4) If Figure 1As shown, the rangefinder 9 is installed at the center of the scale telescopic rod 6 at the fixed point P, and the prism 12 is installed at the center of the scale telescopic rod 6 at the moving points A and B to measure the distance between PA and PB.

[0038] 5) If Figure 1 As shown, adjust the angle dial device 2 at fixed point P so that the laser line transmitter 4 at fixed point P is roughly aligned with the reflective patch 5 at point B. Turn on the laser line transmitter 4 at fixed point P and accurately aim at the center of the reflective patch 5. The beam line emitted by the laser line transmitter 4 will now be the edge of the guide wall groove. When the distance is far, turn on the laser line transmitter 4 at point B to increase the beam aiming intensity at the edge of the guide wall groove. The edge line emitted by the laser line transmitter 4 can be used to excavate the guide wall groove.

[0039] 6) The ground line aimed at by the laser line transmitter 4 is the edge line of the guide wall trench to be excavated. Depending on the on-site construction conditions, excavation can be carried out on one side or on both sides simultaneously.

[0040] The above-described embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field shall fall within the scope of protection determined by the claims of the present invention.

Claims

1. A measuring device for assembling guide wall positioning, characterized in that: It consists of a distance measuring device and a slope displacement monitoring device, wherein the angle turntable device in the distance measuring device is installed on a tripod, a laser line transmitter and a reflective patch are installed on the angle turntable device through a scale telescopic rod, and a rangefinder is installed in the middle of the scale telescopic rod in the distance measuring device; the GNSS in the slope displacement monitoring device is installed on the top of the vertical pole, which is used to lay out the position of the groove reference point, the middle of the vertical pole is connected to a simple tripod, the lower part of the vertical pole is connected to the laser line transmitter and the reflective patch through a scale telescopic rod, and a prism is installed in the middle of the scale telescopic rod in the slope displacement monitoring device; the angle turntable device is divided into two parts, the upper and lower parts can rotate freely coaxially, the upper turntable is used to support and fix the scale telescopic rod; the lower turntable It is engraved with 0°, 90°, 180°, and 270° and can be freely rotated to align with the aiming direction. It is also equipped with a horizontal bubble and a centering device for adjusting the horizontal centering reference point; the laser line transmitter is installed at both ends of the scale telescopic rod, and the laser line transmitter is spirally connected to the scale telescopic rod. The laser line transmitter can rotate up and down to aim at the edge line of the guide wall; the reflective patch is installed at both ends of the scale telescopic rod, and the center of the reflective patch is aligned with the center of the laser line transmitter. The reflective patch is used to receive the light beam emitted by the laser line transmitter and locate the groove edge line; the scale telescopic rod and the angle turntable device are fixed by a rotating nut to ensure that the zero scale line of the telescopic rod is always aligned with the center of the angle turntable device, and the two ends of the telescopic rod are equidistant to measure the width of the guide wall.

2. The assembled guide wall positioning measuring device according to claim 1, characterized in that: The tripod is used to support, adjust and fix the angle turntable device, so as to always ensure that the angle turntable device is level and the center is aligned with the groove reference point.

3. The assembled guide wall positioning measuring device according to claim 1, characterized in that: The distance meter is installed in the middle of the scale telescopic rod with its center aligned with the zero scale, and is used to measure the distance between two points.

4. The assembled guide wall positioning measuring device according to claim 1, characterized in that: The vertical rod is spirally connected to the scale telescopic rod. The vertical rod is provided with a horizontal bubble for adjusting the verticality of the vertical rod. The vertical rod is used for GNSS to lay out the position of the tripod centering groove reference point.

5. The assembled guide wall positioning measuring device according to claim 1, characterized in that: After the prism is installed in the middle of the scale telescopic rod, the center is aligned with the zero scale, which is used to measure the distance between the rangefinder and the prism.

6. A method for measuring the positioning of an assembled guide wall, using the measuring device for the positioning of an assembled guide wall according to any one of claims 1 to 5, characterized in that: The specific steps include the following: 1) First, measure the fixed point P using GNSS surveying. Set up a tripod at the fixed point P and install the angle dial device on the top of the tripod. Adjust the tripod so that the level bubble on the angle dial device is centered. At the same time, adjust the angle dial device so that its center point is aligned with the fixed point P. Tighten the tripod bolts to secure the angle dial device. 2) Install the scale telescopic rod on the upper part of the angle turntable base and tighten the fixing screws. Adjust the length of the scale telescopic rod according to the width of the guide wall groove. Install the laser line transmitter and reflective patch on both ends of the scale telescopic rod. Adjust the length of the scale telescopic rod again to ensure that the center projection of the laser line transmitter and reflective patch coincides with the edge of the guide wall groove. 3) Install a graduated telescopic rod at the bottom of the pole, install the laser line transmitter and reflective patch at both ends of the graduated telescopic rod, use GNSS to stake out the positions of movable points A and B, adjust the horizontal bubble of the pole to the center, fix the pole with a simple tripod bracket, and adjust the length of the graduated telescopic rod to the same width as the guide wall groove. The center projections of the laser line transmitter and reflective patch coincide with the edge of the guide wall groove. 4) The distance meter is installed at the center of the scale telescopic device at the fixed point P, and the prism is installed at the center of the scale telescopic rod at the movable points A and B to measure the distance between PA and PB. 5) Adjust the angle turntable device of the fixed point P so that the laser line transmitter at the fixed point P is roughly aligned with the reflective patch at the moving point B. Turn on the laser line transmitter at the fixed point P and accurately aim at the center of the reflective patch. At this time, the light beam emitted by the laser line transmitter is the edge line of the guide wall groove. When the distance is far, turn on the laser line transmitter at the moving point B to increase the light beam aiming intensity of the guide wall groove edge line. The guide wall groove is excavated according to the edge line emitted by the laser. 6) The ground line aimed by the laser emission is the edge line of the guide wall trench to be excavated. Depending on the on-site construction conditions, excavation can be carried out on one side or on both sides at the same time.

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