A rotation operation method for adjusting the orientation of a foundation pit inclinometer tube

Abstract

A kind of rotating operation method for adjusting the orientation of foundation inclinometer pipe, comprising the following steps: (a) assembling the rotating device for adjusting the orientation of foundation inclinometer pipe;(b) drilling rig device drills ground and installs and embeds foundation inclinometer pipe;(c) rotating adjustment device, make inner tube rotate with adjustment device, make guide groove center line vertical to foundation;(d) pull out adjustment device, adjust the position of outer plate, fix the position of inner tube;(e) lower inclinometer along guide groove, measure data every set distance and record, after monitor reaches pipe bottom, remove fixing part, rotate inner tube 180 degrees, fix the position of inner tube with fixing part, lift inclinometer, measure data every set distance and record;(f) take the average of two measured data as actual monitoring value;(g) next monitoring is carried out according to step (e);(h) after ending, pull out inclinometer and disassemble and recycle, the present application has high construction efficiency, good economy and can be disassembled.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of foundation pit construction monitoring, and relates to a rotating operation method for adjusting the orientation of a foundation pit inclinometer tube, which is suitable for deep soil displacement monitoring in foundation pit construction. BACKGROUND

[0002] During deep foundation pit construction, in order to understand the influence of foundation pit construction on the surrounding environment, an inclinometer tube is usually used to monitor the horizontal displacement of deep soil around the foundation pit. The method of monitoring the horizontal displacement of deep soil is to drill a hole around the foundation pit and install an inclinometer tube, and then use an inclinometer to measure the horizontal displacement of the guide groove along the guide groove in the inclinometer tube. The displacement of the guide groove reflects the displacement of the foundation pit. The current measurement method is to first place the inclinometer along the guide groove to the bottom of the hole, and then measure a data every 0.5 m until the hole opening. Since the measurement accuracy requirement is very high, in order to eliminate the system error of the inclinometer, the inclinometer is rotated by 180 degrees and placed again at the bottom of the hole, and then measured again. The average value of the two is taken as the horizontal displacement deformation value of the soil.

[0003] In order to ensure the accuracy of the soil horizontal displacement monitoring, the guide groove should be kept perpendicular to the foundation pit during the inclinometer tube lowering process. However, in actual construction, the installation of the inclinometer tube in the drilled hole often leads to deviation of the orientation of the guide groove. In addition, the existing measurement method requires the inclinometer to be placed in the inclinometer tube twice. A construction site has many inclinometer holes, and a large amount of manpower is required in actual construction, which is low in construction efficiency. Moreover, the above work needs to be repeated every day, which is labor-intensive and time-consuming. SUMMARY

[0004] In order to overcome the problems of deviation of the orientation of the inclinometer tube and low monitoring efficiency in the monitoring of the horizontal displacement of deep soil in the foundation pit, the present application provides a rotating operation method for adjusting the orientation of the foundation pit inclinometer tube, which can not only adjust the orientation of the inclinometer tube, but also only needs to place the inclinometer in the inclinometer tube once during measurement, and has the advantages of high construction efficiency, simple operation, good economy and detachability.

[0005] The technical solution adopted by the present application to solve its technical problems is:

[0006] A rotating operation method for adjusting the orientation of a foundation pit inclinometer tube, comprising the following steps:

[0007] (a) Assembling a rotating device for adjusting the orientation of a foundation pit inclinometer tube according to the design requirements, and combining the outer tube with the inner tube; the rotating device comprises an inner tube, an outer tube, a fixing member and an adjusting device, the inner tube is connected with the outer tube to form a whole, the fixing member is used to fix the inner tube so that the inner tube cannot rotate, and the adjusting device comprises a rotating handle, a rotating shaft and a cross-shaped rotating rod, one end of the rotating shaft is connected with the cross-shaped rotating rod, and the other end is connected with the rotating handle;

[0008] (b) Drilling a hole in the ground by a drilling device, and installing and burying a foundation pit inclinometer tube;

[0009] (c) measuring the angle between the center line of the guide groove and the vertical line of the foundation pit clockwise or counterclockwise as β, inserting the cross-shaped rotating rod of the adjusting device into the guide groove and the fixing groove, rotating the adjusting device, rotating the inner tube together with the adjusting device clockwise or counterclockwise by β, so that the center line of the guide groove is perpendicular to the foundation pit;

[0010] (d) pulling out the adjusting device, inserting the inner plate of the fixing member into the fixing groove, and adjusting the position of the outer plate by rotating the rotating fixing rod, so as to fix the position of the inner tube;

[0011] (e) lowering the inclinometer along the guide groove, measuring data every certain distance and recording, after the inclinometer reaches the bottom of the tube, removing the fixing member, inserting the cross-shaped rotating rod of the adjusting device into the guide groove and the fixing groove, rotating the inner tube by 180 degrees, fixing the position of the inner tube with the fixing member, and lifting the inclinometer to measure data every certain distance and record;

[0012] (f) taking the average of the two measured data as the actual monitoring value, and covering the monitoring tube after measurement to play a protective role;

[0013] (g) the next monitoring is carried out according to step (e);

[0014] (h) after the project is completed, the inclinometer is pulled out and disassembled for recycling, and the next project continues to be used.

[0015] Further, in the step (e), the certain distance is 0.5 m.

[0016] Further, in the step (a), the inner tube comprises a fixing groove, a guide groove and a clamping member, the fixing groove and the guide groove are located on the inner side of the inner tube, and the clamping member surrounds the inner tube.

[0017] Further, in the step (a), the outer tube comprises a connecting groove, a clamping groove and a connecting member, the outer tube is divided into two semicircular tubes, one half of which is provided with the connecting groove, and the other half is provided with the connecting member, the connecting member is inserted into the connecting groove to form a complete circular tube, and the clamping groove is located on the inner side of the outer tube, the inner tube clamping member is inserted into the outer tube clamping groove, so that the inner tube and the outer tube are connected to form a whole.

[0018] Further, in the step (a), the fixing member comprises a top plate, an inner plate, an outer plate, a sliding member, a fixing hole, a sliding track, a rotating fixing rod and a handle, the handle is located above the top plate, one end of the top plate is connected with the inner plate, and the other end is connected with the outer plate, the sliding member on the outer plate can slide on the sliding track of the top plate to adjust the distance between the inner plate and the outer plate, so as to fix the position of the inner tube, and then the rotating fixing rod is inserted into the fixing hole and tightened.

[0019] The beneficial effects of the present application mainly include:

[0020] (1) Monitoring accuracy. First, the inclinometer tube is buried, and then the inclinometer tube orientation is adjusted, which reduces the influence of construction on the inclinometer tube orientation, makes the inclinometer tube guide groove perpendicular to the foundation pit, and can accurately reflect the horizontal displacement deformation of deep soil.

[0021] (2) Reduce the operation steps. When monitoring the displacement of deep soil, the monitoring instrument needs to be put into the guide groove twice. The inner tube in the device can rotate, and the inclinometer is monitored once when it is put in. The inner tube is rotated by 180 degrees, and the inclinometer is lifted to monitor again. There is no need to put the inclinometer into the inclinometer tube again, which reduces the operation steps in the monitoring process.

[0022] (3) Improve the construction efficiency and save labor. The rotatable inner tube is adopted, and the inclinometer only needs to be put into the inclinometer tube once, which greatly saves the construction time, improves the construction efficiency, and saves labor. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a diagram of a foundation pit inclinometer device;

[0024] Figure 2 is a diagram of an inclinometer tube before adjustment;

[0025] Figure 3 is a three-dimensional diagram of inner tube adjustment;

[0026] Figure 4 is a three-dimensional diagram of adjustment device;

[0027] Figure 5 is a three-dimensional diagram of inclinometer tube after adjustment;

[0028] Figure 6 is a three-dimensional diagram of fixing part;

[0029] Figure 7 is a right view of fixing part;

[0030] Figure 8 is a three-dimensional diagram of top plate;

[0031] Figure 9 is a three-dimensional diagram of outer plate;

[0032] Figure 10 is a three-dimensional diagram of rotating fixing rod;

[0033] Figure 11 is a detailed three-dimensional diagram of outer tube; Figure 1

[0034] Figure 12 is a detailed top view of outer tube; Figure 1

[0035] Figure 13 is a detailed right view of outer tube; Figure 1

[0036] ​​​Figure 14 Detail of outer tube Figure 2 Three-dimensional view

[0037] Figure 15 Detail of outer tube Figure 2 Plan view

[0038] Figure 16 Detail of outer tube Figure 2 Left view

[0039] Figure 17 Three-dimensional view of inner tube

[0040] Figure 18 Plan view of inner tube

[0041] Figure 19 Elevation view of inner tube

[0042] Wherein: 1 is a foundation pit inclinometer tube, 2 is a fixing piece, 21 is a top plate, 22 is an inner plate, 23 is an outer plate, 24 is a sliding piece, 25 is a fixing hole, 26 is a sliding rail, 27 is a rotating fixing rod, 3 is a handle, 4 is a crown beam, 5 is an enclosure structure, 6 is a rotating handle, 7 is a rotating shaft, 8 is a cross rotating rod, 9 is an inner tube, 91 is a fixing groove, 92 is a guide groove, 93 is a clamping piece, 10 is an outer tube, 101 is a connecting groove, 102 is a clamping groove, 103 is a connecting piece. DETAILED DESCRIPTION

[0043] The application will be further described below with reference to the accompanying drawings.

[0044] Referring to Figures 1-19 A rotating operation method for adjusting the orientation of a foundation pit inclinometer tube, comprising the following steps:

[0045] (a) Assembling a rotating device for adjusting the orientation of a foundation pit inclinometer tube according to design requirements, combining an outer tube with an inner tube; the rotating device comprises an inner tube 9, an outer tube 10, a fixing piece 2 and an adjusting device, the inner tube 9 is connected with the outer tube 10 to form an integral whole, the fixing piece 2 is used for fixing the inner tube 9 so that the inner tube 9 cannot rotate, the adjusting device comprises a rotating handle 6, a rotating shaft 7 and a cross rotating rod 8, one end of the rotating shaft 7 is connected with the cross rotating rod 8 and the other end is connected with the rotating handle 6, when adjusting the orientation of the inner tube, the four corners of the cross rotating rod 8 are inserted into the fixing groove 91 and the guide groove 92 of the inner tube, and the rotating handle 6 is manually rotated to adjust the orientation of the inner tube of the inclinometer;

[0046] (b) Drilling device drills holes in the ground and installs and embeds the foundation pit inclinometer tube;

[0047] (c) Measure the angle between the center line of the guide groove and the vertical line of the foundation pit clockwise or counterclockwise β, insert the cross rotating rod of the adjusting device into the guide groove and the fixed groove, rotate the adjusting device, rotate the inner tube together with the adjusting device clockwise or counterclockwise β, so that the center line of the guide groove is perpendicular to the vertical line of the foundation pit;

[0048] (d) Pull out the adjusting device, insert the inner plate of the fixing member into the fixed groove, and adjust the position of the outer plate by rotating the rotating fixing rod, so as to fix the position of the inner tube;

[0049] (e) Lower the inclinometer along the guide groove, measure the data every certain distance and record, after the inclinometer reaches the bottom of the tube, remove the fixing member, insert the cross rotating rod of the adjusting device into the guide groove and the fixed groove, rotate the inner tube by 180 degrees, fix the position of the inner tube with the fixing member, and lift the inclinometer to measure the data every certain distance and record;

[0050] (f) Take the average of the two measured data as the actual monitoring value, cover the monitoring tube after measurement to protect it;

[0051] (g) The next monitoring is carried out according to step (e);

[0052] (h) After the completion of the project, pull out and disassemble the inclinometer for recycling, and continue to use it in the next project.

[0053] Further, in the step (e), the certain distance is 0.5 m.

[0054] In this embodiment, the rotating device for adjusting the orientation of the foundation pit inclinometer casing includes an inner tube 9, an outer tube 10, a fixing member 2 and an adjusting device. The inner tube 9 includes a fixing groove 91, a guide groove 92 and a clamping member 93. The fixing groove 91 and the guide groove 92 are located on the inner side of the inner tube 9, and the clamping member 93 surrounds the inner tube 9. The outer tube 10 includes a connecting groove 101, a clamping groove 102 and a connecting member 103. The outer tube 10 is divided into two semicircular tubes. One half of the outer tube 10 is provided with the connecting groove 101, and the other half is provided with the connecting member 103. The connecting member 103 is inserted into the connecting groove 101 to form a complete circular tube. The clamping groove 102 is located on the inner side of the outer tube 10. The inner tube clamping member 93 is inserted into the outer tube clamping groove 102 to connect the inner tube 9 and the outer tube 10 to form a whole. The fixing member 2 is used to fix the inner tube 9 so that the inner tube 9 cannot rotate. The fixing member 2 includes a top plate 21, an inner plate 22, an outer plate 23, a sliding member 24, a fixing hole 25, a sliding track 26, a rotating fixing rod 27 and a handle 3. The handle 3 is located above the top plate 21. One end of the top plate 21 is connected with the inner plate 22, and the other end is connected with the outer plate 23. The sliding member 24 on the outer plate can slide on the top plate sliding track 26 to adjust the distance between the inner plate and the outer plate, so as to fix the position of the inner tube 9. Then, the rotating fixing rod 27 is inserted into the fixing hole 25 and tightened. The adjusting device includes a rotating handle 6, a rotating shaft 7 and a cross rotating rod 8. One end of the rotating shaft 7 is connected with the cross rotating rod 8, and the other end is connected with the rotating handle 6. When adjusting the orientation of the inner tube, the four corners of the cross rotating rod 8 are inserted into the fixing groove 91 and the guide groove 92 of the inner tube. The rotating handle 6 is manually rotated to adjust the orientation of the inner tube of the inclinometer casing.

[0055] A certain subway station deep foundation pit has a total length of 535.5 m, a standard section width of 71.4 m, an end well width of 73.35-80 m, a standard section structure height of 17.1 m, a station depth of 18.8-20.3 m, and is constructed by the open excavation method. The enclosure structure is a 1000 mm thick underground continuous wall + three layers of reinforced concrete support. The soil layer in the foundation pit construction range is mainly sandy silt, silt, silt clay, silt sand, sandy silt clay and round gravel. The surrounding environment of the foundation pit is relatively complex, including an airport parking lot, a terminal building, a rainwater pipe, a power pipe and a gas pipe. The accuracy of the deformation monitoring results is required to be high. In the foundation pit construction, if the traditional method is used to bury the inclinometer casing, the orientation of the inclinometer casing is prone to deviation, which will greatly affect the accuracy of the monitoring results. If the deformation is too large and timely measures are not taken, the use of the surrounding buildings will be affected. The rotating device for adjusting the orientation of the foundation pit inclinometer casing not only ensures the accuracy of the orientation of the inclinometer casing, but also has the advantages of high construction efficiency and labor saving.

[0056] Embodiments of the present application:

[0057] (a) Assemble the foundation pit inclinometer casing device according to the design requirements, and combine the outer tube with the inner tube.

[0058] (b) The drilling rig drills a hole in the ground and installs the foundation inclinometer casing.

[0059] (c) Measure the angle between the guide slot center line and the foundation vertical line clockwise (or counterclockwise) β, insert the cross-shaped rotating rod of the adjusting device into the guide slot and the fixed slot, rotate the adjusting device, rotate the inner tube together with the adjusting device, rotate clockwise (or counterclockwise) β, and make the guide slot center line vertical to the foundation.

[0060] (d) Pull out the adjusting device, insert the inner plate of the fixing member into the fixed slot, and twist the rotating fixing rod to adjust the position of the outer plate and fix the position of the inner tube.

[0061] (e) Lower the inclinometer along the guide slot, measure and record data every 0.5m, and after the monitor reaches the bottom of the tube, remove the fixing member, insert the cross-shaped rotating rod of the adjusting device into the guide slot and the fixed slot, rotate the inner tube by 180 degrees, fix the position of the inner tube with the fixing member, and lift the inclinometer to measure and record data every 0.5m.

[0062] (f) Take the average of the two measured data as the actual monitoring value, cover the monitoring tube after measurement to protect it.

[0063] (g) The next monitoring is carried out according to step (e).

[0064] (h) After the completion of the project, pull out and disassemble the inclinometer for recycling, and continue to use it in the next project.

[0065] The embodiments of the present specification are only enumerations of implementation forms of the inventive concept, and are only for the purpose of description. The protection scope of the present application should not be regarded as being limited to the specific forms described in the present embodiments, and the protection scope of the present application also includes equivalent technical means that can be thought of by those skilled in the art according to the inventive concept.

Claims

1. A rotation operation method for adjusting the orientation of a foundation pit inclinometer casing, characterized by, The method comprises the following steps: (a) Assembling a rotating device for adjusting the orientation of the foundation pit inclinometer pipe according to the design requirements, combining the outer pipe with the inner pipe; the rotating device comprises an inner pipe, an outer pipe, a fixing part and an adjusting device, the inner pipe is connected with the outer pipe to form a whole, the fixing part is used for fixing the inner pipe so that the inner pipe cannot rotate, the adjusting device comprises a rotating handle, a rotating shaft and a cross-shaped rotating rod, one end of the rotating shaft is connected with the cross-shaped rotating rod, and the other end of the rotating shaft is connected with the rotating handle; the fixing part comprises a top plate, an inner plate, an outer plate, a sliding part, a fixing hole, a sliding track, a rotating fixing rod and a handle, the handle is located above the top plate, one end of the top plate is connected with the inner plate, and the other end of the top plate is connected with the outer plate, the sliding part on the outer plate can slide on the sliding track of the top plate to adjust the distance between the inner plate and the outer plate, so as to fix the position of the inner pipe, and then the rotating fixing rod is inserted into the fixing hole and tightened; (b) Drilling device drills holes in the ground and installs and embeds the foundation pit inclinometer pipe; (c) Measuring the angle between the center line of the guide groove and the vertical line of the foundation pit as clockwise or counterclockwise β, inserting the cross-shaped rotating rod of the adjusting device into the guide groove and the fixing groove, rotating the adjusting device, rotating the inner pipe together with the adjusting device, rotating clockwise or counterclockwise by β, and making the center line of the guide groove vertical to the foundation pit; (d) Pulling out the adjusting device, inserting the inner plate of the fixing part into the fixing groove, and adjusting the position of the outer plate by tightening the rotating fixing rod to fix the position of the inner pipe; (e) Lowering the inclinometer along the guide groove, measuring data every certain distance and recording, taking out the fixing part after the monitor reaches the bottom of the pipe, inserting the cross-shaped rotating rod of the adjusting device into the guide groove and the fixing groove, rotating the inner pipe by 180 degrees, fixing the position of the inner pipe by the fixing part, and lifting the inclinometer to measure data every certain distance and record; (f) Taking the average of the two measured data as the actual monitoring value, covering the monitoring pipe after measurement to play a protection role; (g) The next monitoring is carried out according to step (e); (h) After the end of the project, the inclinometer pipe is pulled out and disassembled for recycling, and the next project continues to be used.

2. A rotation operation method for adjusting the orientation of a foundation pit inclinometer casing according to claim 1, characterized in that, In the step (e), the certain distance is 0.5 m.

3. A rotation operation method for adjusting the orientation of a foundation pit inclinometer casing according to claim 1 or 2, characterized in that, In the step (a), the inner pipe comprises a fixing groove, a guide groove and a clamping part, the fixing groove and the guide groove are located on the inner side of the inner pipe, and the clamping part surrounds the inner pipe.

4. The rotation operation method for adjusting the orientation of a foundation pit inclinometer casing according to claim 1 or 2, characterized in that, In the step (a), the outer pipe comprises a connecting groove, a clamping groove and a connecting part, the outer pipe is divided into two semicircular pipes, one half of which is provided with the connecting groove, and the other half is provided with the connecting part, the connecting part is inserted into the connecting groove to form a complete circular pipe, and the clamping groove is located on the inner side of the outer pipe, the clamping part of the inner pipe is inserted into the clamping groove of the outer pipe, so that the inner pipe and the outer pipe are connected to form a whole.

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