CN109138458B - One-way inclinometer auxiliary device and installation method - Google Patents

Abstract

The invention discloses a unidirectional inclinometer auxiliary tool and an installation method thereof, which are applied to structural deformation and stability monitoring of hydraulic structure buildings and civil and industrial buildings. The auxiliary tool is a square column structure with a closed bottom surface and an openable top surface, and a transverse groove and a vertical groove are respectively formed in the bottom and the back surface and used for clamping transverse steel bars and vertical steel bars; the front surface is provided with a positioning hole and an angle adjusting hole for fixing the instrument and adjusting the initial angle of the instrument; the top cover is connected with the column structure through a hinge; the top surface is provided with a wire outlet slot for guiding the observation cable from the inside of the embedded box to the outside of the box. The installation method ensures that the unidirectional inclinometer is firmly clamped on the transverse steel bars and the vertical steel bars, and can not loosen when the unidirectional inclinometer is impacted by concrete falling and the vibrating rod is vibrated vigorously; the initial angle of the instrument is adjusted through the angle adjusting bolt on the outer side, so that the perpendicularity during installation is guaranteed, the installation survival rate and the later measurement precision are improved, accurate installation, convenience and adjustability are realized, and the key technical problem in field installation of the unidirectional inclinometer is solved.

Description

One-way inclinometer auxiliary device and installation method

technical field

The invention relates to the field of civil engineering monitoring, in particular to a one-way inclinometer auxiliary device and an installation method for monitoring the structural stability and deformation of hydraulic structures and industrial and civil buildings.

Background technique

During the construction of hydraulic structures such as dams and sluices, as well as industrial and civil structures such as tunnels, bridges, and civil foundation pits, due to water pressure, backfilling soil behind walls, and some other external loads, the main structure of the building Inevitably, there will be deformations such as corners or horizontal displacements. During the construction process and later operation, it is necessary to pay close attention to the deformation and stability of the building structure. Therefore, it is necessary to monitor the relative horizontal displacement of the building structure in real time. . Generally, a one-way inclinometer is used for direct measurement.

At present, the installation of the one-way inclinometer usually adopts the bundling method, that is, first determine the installation location, put the one-way inclinometer on the installation position, one person fixes the position of the instrument, and the other person binds the one-way inclinometer to the steel bar by wrapping the tie wire with a hook Then use iron wire to further bind the one-way inclinometer and the steel bar firmly. This traditional one-way inclinometer installation method is not only difficult to fix the instrument, but also prone to problems such as difficulty in ensuring verticality and difficulty in accurately adjusting the initial angle. Specifically, the traditional one-way inclinometer installation method has the following disadvantages and deficiencies:

(1) First of all, the instrument is difficult to fix, and it is easy to loosen when stressed;

(2) Secondly, the verticality of the instrument is not easy to guarantee;

(3) Again, it is difficult to adjust the angle of the instrument precisely after installation.

The existence of the above problems will inevitably affect the deformation and stability monitoring of the structure. Analyzing the reasons, there are three main influencing factors:

(1) The binding tools and methods are too primitive and simple. The traditional installation method only uses binding wire and iron wire for binding. First of all, the bearing capacity of the binding wire is very low and cannot withstand the force required to firmly bind the one-way inclinometer. Under the action of the binding hook, it will often fatigue and soften until it loses Bearing capacity; secondly, when the iron wire is bound to the ribbed steel bar during the binding process, it usually acts on the rib of the steel bar, and when the concrete is poured, the iron wire will It slipped from the rib of the ribbed steel bar, causing the one-way inclinometer to loosen, making the initial angle of the one-way inclinometer not zero. However, it is difficult to re-bind at this time, resulting in damage to the measurement accuracy of the instrument and loss of data. Credibility is also questionable.

(2) The dependence on iron wire is too strong. In the iron wire binding method, due to the uneven force of the iron wire when it rotates under the drive of the vise during the installation process, the force on the one-way inclinometer deviates from the original position or produces an inclination displacement, so that the initial angle of the one-way inclinometer is not zero. , the verticality is disturbed; in addition, this position change of the one-way inclinometer is not visible to the naked eye, and it will not be discovered until the second instrument test is passed, and it is already difficult to adjust at this time, which has a negative impact on the accuracy of the instrument installation. Influence.

(3) The angle cannot be adjusted. During the binding process, due to the uneven effect of the iron wire caused by human operation, it will inevitably lead to deviations in the installation position of the instrument. The initial angle of the instrument is usually not zero. At this time, the angle cannot be adjusted because the iron wire has been tightened and is not easy to loosen; Cutting off the iron wire and binding it again will produce the same problem as above. Such a cycle not only cannot solve the problem, but also takes time and effort, increases the installation cost, and the instrument itself will be affected or even damaged.

Therefore, in order to solve the key technical problems of the traditional inclinometer installation method, such as the difficulty in fixing the instrument, the difficulty in ensuring the verticality, and the difficulty in accurately adjusting the initial angle, a convenient and adjustable one-way inclinometer auxiliary device was developed, and a matching installation method was adopted very necessary.

Contents of the invention

In order to overcome the above-mentioned defects, the present invention provides a one-way inclinometer auxiliary device and an installation method, specifically adopting the following technical scheme:

A one-way inclinometer auxiliary tool, which is a box-like structure with a cover with a cavity, and the inner cavity is used to accommodate and install a one-way inclinometer. It is characterized in that: the auxiliary tool is a cuboid structure, and the The auxiliary device is closed at the bottom and a cover is arranged at the top, and the cover can be opened.

Further, set: the front side of the auxiliary device is side A, the left side is side C, the right side is side D, the side (back) opposite to the front is side B, the top side is side E, and the bottom side is side F . There are two bolt holes used to fix the one-way inclinometer mounting bracket in the middle part of A surface from top to bottom. One is a positioning hole, which is a conventional round hole, and the other is an angle adjustment hole, which is an arc-shaped hole. .

The above two bolt holes, namely the positioning hole and the angle adjustment hole, can be used to adjust the initial angle of the one-way inclinometer. The positioning hole is only used to fix the position of the one-way inclinometer in the auxiliary device; the arc-shaped hole is an angle adjustment hole, which has two functions. One is to fix the position of the one-way inclinometer like the positioning hole, and it also allows the one-way inclination Rotate the instrument left and right to adjust the initial angle, the adjustable angle range: -15°～+15°.

Further, there is an arched ("∩" shaped) transverse groove on the bottom surface, that is, the F surface, and the arched opening faces outwards. The transverse groove penetrates from the front, that is, the bottom of the A surface, to the opposite back, that is, the bottom of the B surface. end, used to clamp the horizontal steel bar; and, on the B surface, there is an arched ("∩" shaped) vertical groove, which runs through the E surface to the F surface, and is used to clamp the vertical steel bar . On face B, the transverse grooves are adjacent to the vertical grooves.

Further, the right side, ie, the D side, is a smooth and closed plane without openings or grooves.

Further, for the one-way inclinometer auxiliary device, the top cover is a top cover, and the top cover forms an E surface, and the right side, that is, the D surface, is connected to the top cover through a hinge, and one side of the hinge is fixed On the top cover, one side is fixed on the D surface; the top cover can rotate around the hinge to realize the opening action; at the same time, there is also an arched groove on the top cover, and the shape of the groove is the same as that of the vertical groove on the B surface match. There is also a wire outlet slot on the top cover, and the wire outlet slot is used to guide the observation cable of the one-way inclinometer from the auxiliary device to the outside.

Further, the outlet slot is a long and narrow U-shaped slot extending from the edge of the top surface to the middle.

Further, the one-way inclinometer also includes a mounting bracket. One end of the one-way inclinometer is fixedly connected to the "L"-shaped installation frame, and the short side at the bottom of the installation frame is fixedly connected to the bottom end of the one-way inclinometer, and the one-way inclinometer is placed on the "L"-shaped installation Inside the frame, the other end of the one-way inclinometer is connected to the observation cable. There are two circular holes on the vertical long side of the mounting frame, and positioning bolts and angle adjustment bolts are respectively arranged in the two circular holes.

Further, there is a certain gap between the one-way inclinometer and the vertical long side of the installation frame, which is used for the insertion and movement of the bolts. The positioning bolt extends into the positioning hole and cannot move left and right, and is only used to fix the instrument. The angle-adjustment bolt extends into the angle-adjustment hole, and it can rotate left and right along the arc-shaped track in the arc-shaped adjustment groove of the angle-adjustment hole to adjust the initial angle.

Further, the one-way inclinometer is a cylindrical structure.

Further, the C surface is the same as the D surface, which is also a smooth and closed plane; the difference is that a hinge is installed on the inner side of the top of the C surface, which is used to connect the openable top cover.

A method for installing a one-way inclinometer auxiliary device, which adopts the aforementioned one-way inclinometer and one-way inclinometer auxiliary device, is characterized in that: comprising the following steps:

Step 1: Stake out the installation position of the one-way inclinometer according to the design requirements of the drawing, and mark it;

Step 2: Find the intersection point of the nearest horizontal steel bar and vertical steel bar near the stakeout point as the installation point of the one-way inclinometer;

Step 3: Install the one-way inclinometer into the auxiliary equipment, and align the positioning bolts and angle adjustment bolts on the mounting bracket with the positioning holes and angle adjustment holes of the auxiliary equipment respectively;

Step 4: Use positioning bolts and angle-adjusting bolts to fix the auxiliary equipment and the mounting frame of the one-way inclinometer, and tighten the bolts until the angle of the instrument can still be adjusted; adjust the angle of the instrument observation cable so that it is connected to the outlet of the top cover Align the slots and close the top cover;

Step 5: Fix the auxiliary device to the steel bar;

Step 6: Connect the observation cable and the secondary instrument at this time, turn the angle adjustment bolt counterclockwise for one and a half circles, turn the angle adjustment bolt left and right according to the indication, until the indication of the secondary instrument returns to zero, then tighten the two bolts immediately can;

Step 7: Untie the cable of the one-way inclinometer, go out along the steel bars to the outside, and bind the cable to the nearest steel bar along the wire or cable tie to prevent the cable from being damaged;

Step 8: Repeat Step 2 to Step 7 until the installation of all measuring line one-way inclinometers is completed;

Step 9: Hoist the inner and outer formwork, pour concrete, lead the cables led out of the field in step 7 into the observation room, and connect them to the MCU or the secondary instrument, and the installation of the one-way inclinometer is completed.

Further, the method of fixing the auxiliary device to the steel bar in the above step five is as follows:

(1) Align the transverse groove of the auxiliary device with the transverse steel bar, and make the transverse groove clamp the transverse steel bar;

(2) Then move horizontally to align the vertical groove of the auxiliary device with the vertical steel bar, and make the vertical groove clamp the vertical steel bar, so that the auxiliary device has been fixed in both horizontal and vertical directions. It will not rotate in any direction, so the instrument in the box will not rotate, so as to achieve the purpose of fixing the instrument;

(3) At this time, adjust the angle adjustment bolt to adjust the initial angle to zero, and tighten the positioning bolt and angle adjustment bolt with a hexagonal wrench.

Beneficial effects of the present invention:

According to the shortcomings and deficiencies in the existing one-way inclinometer installation methods, such as difficult to fix the instrument, difficult to ensure verticality, and non-adjustable angle, a convenient and adjustable one-way inclinometer auxiliary device and its The purpose of the installation method is to overcome the defects and deficiencies of the traditional installation method, and to improve and optimize key technologies. The technical solution of the present invention at least achieves the beneficial effects of the following aspects:

(1) The installation procedure is simplified. Auxiliary devices (embedded boxes) are prefabricated and batch-processed by lathes and molds, and only one person is required to install them on site, without the need for mandatory binding materials such as binding wires, or tools such as hooks and pliers. It can also be reduced from multiple people to one person to save costs, and it can be installed manually, which is safe and fast.

(2) Realize firm installation and instrument protection. The auxiliary device (embedded box) clamps the horizontal reinforcement through the horizontal groove and the vertical groove clamps the vertical reinforcement so that the auxiliary device (embedded box) cannot move in both directions, and the embedded box also protects the instrument from concrete The falling impact and vibrating rod vibrate violently to achieve the maximum protection of the instrument.

(3) The angle adjustment function has been added. By opening positioning holes and angle adjustment holes on the surface of auxiliary equipment (embedded box), the real-time adjustment of the angle before concrete pouring becomes a reality, and the problem of excessive initial angle deviation during instrument installation is optimized and improved, which improves the performance of the instrument. The installation survival rate and later measurement accuracy greatly improved the authenticity and reliability of the measurement data.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic front view of the one-way inclinometer auxiliary device.

Fig. 2 is a schematic view of the right side of the one-way inclinometer auxiliary device.

Fig. 3 is a schematic diagram of the top surface of the one-way inclinometer auxiliary device.

Fig. 4 is a schematic view of the front structure of the one-way inclinometer.

Fig. 5 is a schematic diagram of the side structure of the one-way inclinometer.

Fig. 6 is a schematic diagram of the bottom surface structure of the one-way inclinometer.

Fig. 7 is an expanded view of each surface of the one-way inclinometer auxiliary device.

Fig. 8 is a front perspective view when the one-way inclinometer is installed in the auxiliary device.

Fig. 9 is a perspective view of the left side when the one-way inclinometer is installed in the auxiliary device.

Fig. 10 is a perspective view of the bottom surface of the one-way inclinometer when it is installed in the auxiliary device.

Fig. 11 is a schematic diagram of installing the one-way inclinometer auxiliary device on horizontal and vertical steel bars.

Reference signs, where:

1—horizontal slot; 2—vertical slot; 3—positioning hole; 4—angle adjustment hole; 5—outlet slot; 6—one-way inclinometer; 7—installation frame; 8—adjustment Angle bolt; 9—locating bolt; 10—hinge.

Detailed ways

The system and its working method provided by the present invention will be described in detail below by means of embodiments with reference to the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention.

The term "and/or" in this article is just an association relationship describing associated objects, which means that there may be three relationships, for example, A and/or B, which can mean: A exists alone, B exists alone, and A and B exist simultaneously. In the three cases of B, the term "/and" in this article is to describe another associated object relationship, which means that there can be two relationships, for example, A/ and B, which can mean: there is A alone, and there are two cases of A and B alone , In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

Embodiment one

This embodiment mainly introduces the basic structure of a one-way inclinometer auxiliary device.

As shown in accompanying drawings 1-3, it is the three views of the one-way inclinometer auxiliary device.

A one-way inclinometer auxiliary device, which is a box-shaped structure with a cover with an internal cavity, the auxiliary device is a cuboid structure, that is, a square column structure, the bottom of the auxiliary device is closed, and the top is provided with a cover. The lid can be opened. The auxiliary device is designed as a pre-embedded box type, and the cavity in the middle is used for accommodating and installing a one-way inclinometer.

Setting: The front side of the assistive device is side A, the left side is side C, the right side is side D, the side opposite to the front (back) is side B, the top side is side E, and the bottom side is side F.

As shown in Figure 1, it is a schematic front view of the one-way inclinometer auxiliary device. As shown in Figure 1, there are two bolt holes used to fix the mounting bracket of the one-way inclinometer in the middle part of the A surface from top to bottom. One is the positioning hole 3, which is a conventional round hole, and the other is for angle adjustment. The hole 4 is an arc-shaped hole.

The initial angle of the one-way inclinometer can be adjusted by using the above two bolt holes, that is, the positioning hole 3 and the angle adjustment hole 4 . The positioning hole 3 is only used to fix the position of the one-way inclinometer 6 in the auxiliary device; the arc hole is an angle adjustment hole, which has two functions. One is to fix the position of the one-way inclinometer 6 as the positioning hole 3, and it also The one-way inclinometer 6 is allowed to rotate left and right to adjust the initial angle, and the adjustable angle range is -15°～+15°.

Further, as shown in accompanying drawing 1, the bottom surface, that is, the F surface, is provided with an arched ("∩" shaped) transverse groove 1, the arched opening faces outwards, and the transverse groove 1 runs through from the front, that is, the bottom end of the A surface, to the The opposite back is the bottom of the B surface, which is used to clamp the horizontal reinforcement; and, there is an arched ("∩" shaped) vertical groove 2 on the B surface, and the vertical groove 2 penetrates from the E surface To the F side, it is used to clamp the vertical steel bars. On the B side, the transverse groove 1 is adjacent to the vertical groove 2 .

As shown in accompanying drawing 2, it is a schematic view of the right side of the one-way inclinometer auxiliary device. As shown in the figure, the right side, ie, the D side, is a smooth and closed plane without holes or grooves.

Further, as shown in Figure 3, it is a schematic top view of the one-way inclinometer auxiliary device. As shown in the figure, the one-way inclinometer auxiliary tool also includes a top cover, the top cover forms an E surface, and the right side, that is, the D surface, is connected to the top cover through a hinge 10, and the hinge 10 One side is fixed on the top cover, and the other side is fixed on the D surface; the top cover can rotate around the hinge to realize the opening action; at the same time, there is also an arched groove on the top cover. The groove shape matches. There is also a wire outlet slot 5 on the top cover, and the wire outlet slot 5 is used to guide the observation cable of the one-way inclinometer 6 from the auxiliary device to the outside.

Further, the outlet slot 5 is a long and narrow U-shaped slot extending from the edge of the top surface to the middle.

As shown in accompanying drawing 4, it is a schematic view of the front structure of the one-way inclinometer.

One end of the one-way inclinometer 6 is fixedly connected to the "L"-shaped mounting frame 7, and the short side at the bottom of the mounting frame 7 is fixedly connected to one end of the bottom of the one-way inclinometer 6, and the one-way inclinometer 6 is placed on the " Inside the L"-shaped mounting frame 7, the other end of the one-way inclinometer 6 is connected to the observation cable. Two circular holes are arranged on the vertical long side of the mounting bracket 7, and positioning bolts 9 and angle adjustment bolts 8 are respectively arranged in the two circular holes.

As shown in Figure 5, it is a schematic diagram of the side structure of the one-way inclinometer. As shown in the figure, there is a certain gap between the one-way inclinometer 6 and the vertical long side of the installation frame 7 for the insertion and movement of the bolts. The positioning bolt 9 extends into the positioning hole 3 and cannot move left and right, and is only used to fix the instrument. The angle-adjustment bolt 8 extends into the angle-adjustment hole 4, and it can rotate left and right along the arc-shaped track in the arc-shaped adjustment groove of the angle-adjustment hole 4, so as to adjust the initial angle.

As shown in Figure 6, it is a schematic view of the bottom surface structure of the one-way inclinometer. As shown in the figure, the one-way inclinometer 6 is a cylindrical structure.

Further, the C surface is the same as the D surface, which is also a smooth and closed plane; the difference is that a hinge 10 is installed on the inner side of the top of the C surface, which is used to connect the openable top cover.

As shown in accompanying drawing 7, it is an expanded view of each surface of the one-way inclinometer auxiliary device. As shown in the figure, the upper part on the left is the top surface, and the middle part on the left is the left side, which is connected to the top surface through the hinge 10 . The middle part on the left side is the left side, the front side, the right side side and the back side in turn. The lower part on the left in the figure is the bottom surface.

Embodiment two

This embodiment is carried out on the basis of the foregoing embodiment 1, and mainly introduces an installation method of a one-way inclinometer auxiliary device.

As shown in accompanying drawing 8, it is the front perspective view when the one-way inclinometer is loaded into the auxiliary device.

As shown in accompanying drawing 9, it is the perspective view of the left side when the one-way inclinometer is loaded into the auxiliary device.

As shown in accompanying drawing 10, it is the perspective view of the bottom surface when the one-way inclinometer is loaded into the auxiliary device.

As shown in accompanying drawing 11, it is a schematic diagram of installing the one-way inclinometer auxiliary device on the horizontal and vertical steel bars.

A method for installing a one-way inclinometer auxiliary device, using the aforementioned one-way inclinometer auxiliary device, comprising the following steps:

Step 1: Stake out the installation position of the one-way inclinometer according to the design requirements of the drawing, and mark it;

Step 2: Find the intersection point of the nearest horizontal steel bar and vertical steel bar near the stakeout point as the installation point of the one-way inclinometer;

Step 3: Install the one-way inclinometer into the auxiliary device, and align the positioning bolt 9 and the angle adjustment bolt 8 on the mounting bracket with the positioning hole 3 and the angle adjustment hole 4 of the auxiliary device respectively;

Step 4: Use positioning bolt 9 and angle adjustment bolt 8 to fix the auxiliary device and the mounting frame of the one-way inclinometer, and tighten the bolts until the angle of the instrument can still be adjusted; adjust the angle of the instrument observation cable so that it is in line with the top cover Align the outlet slot (5) of the outlet, and close the top cover;

Step 5: Fix the auxiliary device to the steel bar;

Step 6: At this time, connect the observation cable and the secondary instrument, turn the angle-adjustment bolt 8 counterclockwise for one and a half circles, and turn the angle-adjustment bolt left and right according to the indication until the indication of the secondary instrument returns to zero, then tighten the two immediately. bolts;

Step 7: Untie the cable of the one-way inclinometer, go out along the steel bars to the outside, and bind the cable to the nearest steel bar along the wire or cable tie to prevent the cable from being damaged;

Step 8: Repeat Step 2 to Step 7 until the installation of all measuring line one-way inclinometers is completed;

Step 9: Hoist the inner and outer formwork, pour concrete, lead the cable that was led out of the site in step 7 into the observation room, and connect it to the MCU or secondary instrument, and the installation of the one-way inclinometer is completed.

Further, the method of fixing the auxiliary device to the steel bar in the above step five is as follows:

(1) Align the transverse groove of the auxiliary device with the transverse steel bar, and make the transverse groove clamp the transverse steel bar;

(2) Then move horizontally to align the vertical groove of the auxiliary device with the vertical steel bar, and make the vertical groove clamp the vertical steel bar, so that the auxiliary device has been fixed in both horizontal and vertical directions. It will not rotate in any direction, so the instrument in the box will not rotate, so as to achieve the purpose of fixing the instrument;

(3) At this time, adjust the angle adjustment bolt 8 to adjust the initial angle to zero, and tighten the positioning bolt 9 and the angle adjustment bolt 8 with a hexagonal wrench.

Embodiment three

This embodiment is carried out on the basis of the foregoing embodiments, and mainly introduces practical application cases of the foregoing embodiments.

The present invention will be further described below in conjunction with actual engineering, and its use effect will be verified. The specific implementation cases described here are only used to explain the present invention, not to limit the present invention.

In order to study the structural stability and deformation of the lock chamber of a certain ship lock project, it is necessary to conduct on-site monitoring and detection of the overall structure during construction and water operation. The monitoring of the inclination angle generated by the lock chamber wall with time and the backfill elevation change is the premise of the deformation and stability analysis of the lock chamber.

According to the monitoring requirements, a full section and a half section are set up as the monitoring test section, with a total of three lock chamber walls. The sluice wall is 15m high, and it is a measuring line from the top to the bottom. There are 5 measuring points in total, and the distance between each measuring point is 3m. The installation of the instrument fully meets the design requirements. The pre-embedded boxes of the one-way inclinometer are firmly stuck on the horizontal and vertical steel bars, and there is no looseness. The survival rate is 100%, and the initial angle of the instrument is reset to zero. After long-term monitoring and analysis of observation data, the data change has a good regularity, which is completely consistent with the actual situation, indicating that the one-way inclinometer is working normally, and the inclination angle and relative horizontal displacement data of the lock chamber wall are accurate, true and highly credible . It provides powerful data support for analyzing the internal stress and its distribution acting on the lock chamber wall and studying the stability and deformation of the integral lock chamber structure with unloading plates.

As described above, the present invention can be preferably carried out. For those skilled in the art, changes, modifications, substitutions, integrations and modifications to these embodiments without departing from the principle and spirit of the present invention still fall within the protection scope of the present invention. Parts that are not specifically described or limited in the present invention are implemented by using the prior art.

Claims (9)

1. A unidirectional inclinometer accessory, which is a box-like structure with a cavity, wherein the cavity in the middle is used for accommodating and installing a unidirectional inclinometer, and the unidirectional inclinometer accessory is characterized in that: the auxiliary tool is of a cuboid structure, a cover is arranged at the bottom of the auxiliary tool in a closed mode, and the cover can be opened;

setting: the front surface of the auxiliary tool is an A surface, the left side surface is a C surface, the right side surface is a D surface, the surface opposite to the front surface is a B surface, the top surface is an E surface, and the bottom surface is an F surface; the middle part of the surface A is provided with two bolt holes for fixing a unidirectional inclinometer mounting frame from top to bottom in sequence, one is a positioning hole (3) which is a conventional round hole, and the other is an angle adjusting hole (4) which is a circular arc hole; the two bolt holes, namely the positioning hole (3) and the angle adjusting hole (4), can be used for adjusting the initial angle of the unidirectional inclinometer; the positioning hole (3) is only used for fixing the position of the unidirectional inclinometer (6) in the auxiliary tool; the arc hole is an angle adjusting hole, has two functions, namely, the arc hole is used for fixing the position of the unidirectional inclinometer (6) as the positioning hole (3), and in addition, the unidirectional inclinometer (6) is allowed to rotate left and right to adjust the initial angle.

2. The unidirectional inclinometer accessory of claim 1, wherein: the bottom surface, namely the F surface, is provided with an arched transverse groove (1), the arch opening is outwards, the transverse groove (1) is penetrated from the front surface, namely the bottom end of the A surface, to the opposite back surface, namely the bottom end of the B surface, and is used for clamping transverse steel bars; an arched vertical groove (2) is formed in the surface B, and the vertical groove (2) penetrates from the surface E to the surface F and is used for clamping a vertical reinforcing steel bar; on the surface B, the transverse groove (1) is closely adjacent to the vertical groove (2).

3. The unidirectional inclinometer accessory of claim 2, wherein: the right side surface, namely the D surface, is a smooth and closed plane and is free of holes or grooves; the unidirectional inclinometer auxiliary tool comprises a top cover, wherein the top cover is a top cover, the top cover forms an E surface, the right side surface, namely a D surface, is connected with the top cover through a hinge (10), the hinge (10) is fixed on the top cover and the D surface, and the top cover can rotate around the hinge to realize opening action; meanwhile, the top cover is also provided with an arched groove which is matched with the vertical groove on the B surface in shape; the C surface is the same as the D surface and is also a smooth closed plane; the difference is that a hinge (10) is arranged on the inner side of the top of the C surface and is used for connecting an openable top cover.

4. A unidirectional inclinometer accessory as set forth in claim 3, wherein: the top cover is also provided with an outlet groove (5), and the outlet groove (5) is used for guiding an observation cable of the unidirectional inclinometer (6) from the inside of the auxiliary tool to the outside; the outlet slot (5) is an elongated U-shaped slot extending from the edge of the top surface to the middle.

5. A unidirectional inclinometer accessory as claimed in claim 3 or 4, wherein: the unidirectional inclinometer (6) further comprises a mounting frame (7); one end of the unidirectional inclinometer (6) is fixedly connected to an L-shaped mounting frame (7), the short side of the bottom of the mounting frame (7) is fixedly connected with one end of the bottom of the unidirectional inclinometer (6), the unidirectional inclinometer (6) is arranged inside the L-shaped mounting frame (7), and the other end of the unidirectional inclinometer (6) is connected with an observation cable; two circular holes are formed in the vertical long edge of the mounting frame (7), and positioning bolts (9) and angle adjusting bolts (8) are respectively arranged in the two circular holes.

6. The unidirectional inclinometer accessory of claim 5, wherein: a certain gap is reserved between the unidirectional inclinometer (6) and the vertical long side of the mounting frame (7) for the extension and movement of the bolt; the positioning bolt (9) stretches into the positioning hole (3) and can not move left and right, and is only used for fixing an instrument; the angle adjusting bolt (8) stretches into the angle adjusting hole (4) and can rotate left and right along an arc track in an arc adjusting groove of the angle adjusting hole (4) so as to adjust the initial angle.

7. A unidirectional inclinometer accessory as claimed in any one of claims 1 to 4, wherein: the adjustable angle of the angle adjusting bolt (8) ranges from-15 degrees to +15 degrees.

8. A method of installing a unidirectional inclinometer accessory as set forth in any one of claims 1 to 7, characterized in that: the method comprises the following steps:

step one: setting out the installation position of the unidirectional inclinometer according to the design requirement of the drawing, and marking;

step two: searching the closest intersection point of the transverse steel bar and the vertical steel bar near the lofting point to be used as a mounting point of the unidirectional inclinometer;

step three: loading the unidirectional inclinometer into an auxiliary tool, and respectively aligning a positioning bolt (9) and an angle adjusting bolt (8) on the mounting frame with a positioning hole (3) and an angle adjusting hole (4) of the auxiliary tool;

step four: fixing the auxiliary tool and the unidirectional inclinometer mounting frame by using a positioning bolt (9) and an angle adjusting bolt (8), and screwing the bolts until the instrument angle can be still adjusted; adjusting the angle of the instrument observation cable to align with an outlet groove (5) of the top cover, and closing the top cover;

step five: fixing the auxiliary tool to the steel bar;

step six: at the moment, the observation cable is connected with the secondary instrument, the angle adjusting bolt (8) is rotated one and a half times anticlockwise, the adjusting bolt is rotated left and right according to the indication until the indication of the secondary instrument is reset to zero, and at the moment, the two bolts are immediately screwed;

step seven: the cable of the unidirectional inclinometer is unwound, goes outwards to the outside of the field along the reinforcing steel bars, and is bound to the nearest reinforcing steel bars along the line by using binding wires or binding belts so as to prevent the cable from being damaged;

step eight: cycling the second step to the seventh step until the installation of all the measuring line unidirectional inclinometers is completed;

step nine: hoisting the inner and outer templates, pouring concrete, introducing the cable led out of the field in the step seven into an observation room, and accessing the cable into an MCU or a secondary instrument to finish the installation of the unidirectional inclinometer.

9. A method of installing a unidirectional inclinometer accessory as set forth in claim 8, wherein: the method for fixing the auxiliary tool to the steel bar in the fifth step specifically comprises the following steps:

(1) Aligning the transverse grooves of the auxiliary tool with the transverse steel bars, and enabling the transverse grooves to clamp the transverse steel bars;

(2) The vertical groove of the auxiliary tool is aligned with the vertical steel bar by transverse movement, and the vertical groove clamps the vertical steel bar, so that the auxiliary tool is fixed in the transverse direction and the vertical direction and cannot move in the two directions, and therefore, instruments in the box cannot move, and the purpose of fixing the instruments is achieved;

(3) At the moment, the initial angle of the angle adjusting bolt (8) is adjusted to zero, and the positioning bolt (9) and the angle adjusting bolt (8) are screwed by a hexagonal wrench.

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