CN109138458B

CN109138458B - Auxiliary tool of unidirectional inclinometer and mounting method

Info

Publication number: CN109138458B
Application number: CN201811086576.9A
Authority: CN
Inventors: 关云飞; 方利鹤; 蔡正银; 夏伟; 曹永勇; 张宁; 夏高响; 丁玲; 赵越; 陈允才
Original assignee: Shanghai Municipal Engineering Construction Development Co ltd; Nanjing Hydraulic Research Institute of National Energy Administration Ministry of Transport Ministry of Water Resources
Current assignee: Shanghai Municipal Engineering Construction Development Co ltd; Nanjing Hydraulic Research Institute of National Energy Administration Ministry of Transport Ministry of Water Resources
Priority date: 2018-09-18
Filing date: 2018-09-18
Publication date: 2023-05-30
Anticipated expiration: 2038-09-18
Also published as: CN109138458A

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

Auxiliary tool of unidirectional inclinometer and mounting method

Technical Field

The invention relates to the field of civil engineering monitoring, in particular to a unidirectional inclinometer accessory and an installation method for monitoring the structural stability and deformation of a hydraulic building and a civil building.

Background

In the construction process of hydraulic buildings such as dams, water gates and the like, and industrial and civil buildings such as tunnels, bridges, civil foundation pits and the like, due to the effects of water pressure, backfill behind walls and other external loads, deformation such as rotation angles or horizontal displacement and the like can be inevitably generated in the main structure of the building, and the deformation and stability of the structure of the building are required to be closely concerned in the construction process and the later operation, so that the change amount of the relative horizontal displacement of the structure of the building is required to be monitored in real time. Direct measurement is typically performed using a unidirectional inclinometer.

At present, the unidirectional inclinometer is installed by adopting a bundling method, namely, the installation position is firstly determined, the unidirectional inclinometer is placed at the installation position, one person fixes the position of the instrument, the other person firstly binds the unidirectional inclinometer to the steel bar by winding a bundling wire through a bundling hook, and then the unidirectional inclinometer and the steel bar are further firmly bound by using an iron wire. The traditional unidirectional inclinometer installation method has the problems that the instrument is difficult to fix, the perpendicularity is difficult to ensure, the initial angle is difficult to accurately adjust and the like. Specifically, the conventional unidirectional inclinometer mounting method has the following drawbacks and disadvantages:

(1) Firstly, the instrument is difficult to fix and is easy to loosen when stressed;

(2) Secondly, the perpendicularity of the instrument is not easy to ensure;

(3) Again, the instrument angle is difficult to accurately adjust after installation.

The presence of the above-mentioned problems inevitably affects the deformation of the structure and the stability monitoring work. Analyzing the cause, the main influencing factors are three points:

(1) The ligating tool and manner is too primitive. The traditional installation mode only adopts binding wires and iron wires for binding, firstly, the bearing capacity of the binding wires is very low, the binding wires cannot bear the force required to firmly bind the unidirectional inclinometer, and the binding wires are often fatigued and softened under the action of the binding hooks until the bearing capacity is lost; secondly, when the iron wire is bound to the ribbed steel bar in the binding process, the iron wire is usually applied to the rib of the steel bar, and when concrete is poured, the iron wire slides off the rib of the ribbed steel bar due to the fact that the instrument bears huge falling impact force and violent vibration of the vibrating rod, so that the one-way inclinometer is loose, the initial angle of the one-way inclinometer is not zero, however, the iron wire is difficult to be bound again at the moment, the measuring precision of the instrument is damaged, and the credibility of data is worth of a business.

(2) The dependence on iron wires is too strong. According to the iron wire binding method, the iron wires are stressed unevenly when driven by the vice to rotate in the installation process, so that the unidirectional inclinometer is deviated from the original position or generates inclination displacement due to the action of force, the initial angle of the unidirectional inclinometer is not zero, and the perpendicularity is disturbed; in addition, such a change in position of the unidirectional inclinometer is not visually discernable, and is not found until it passes the secondary meter test, at which time it has been difficult to adjust, affecting the accuracy of the instrument installation.

(3) The angle is not adjustable. In the binding process, the deviation of the installation position of the instrument is inevitably caused due to the action non-uniformity of the iron wires caused by manual operation, the initial angle of the instrument is usually not zero, and at the moment, the angle is not adjustable because the iron wires are already screwed up and are not easy to loosen; cutting off the iron wire and then again can produce above-mentioned same problem, so the circulation not only can not solve the problem, still waste time and energy, increase installation cost to instrument itself still can receive the influence, damages even.

Therefore, in order to solve the key technical problems that in the traditional inclinometer installation method, the instrument is difficult to fix, the perpendicularity is difficult to ensure, the initial angle is difficult to accurately adjust and the like, the development of a convenient and adjustable unidirectional inclinometer auxiliary tool and the adoption of a matched installation method are necessary.

Disclosure of Invention

In order to overcome the defects, the invention provides a unidirectional inclinometer accessory and an installation method, and the technical scheme is as follows:

the utility model provides a one-way inclinometer assists utensil, its is a box-like structure of area lid that has the cavity, and its inside cavity is used for holding the one-way inclinometer of installation, its characterized in that: the auxiliary tool is of a cuboid structure, the bottom of the auxiliary tool is closed, the top of the auxiliary tool is provided with a cover, and the cover can be opened.

Further, set up: the front surface of the auxiliary tool is A surface, the left side surface is C surface, the right side surface is D surface, the surface (back surface) opposite to the front surface is B surface, the top surface is E surface, and the bottom surface is F surface. The middle part of the surface A is provided with two bolt holes for fixing the unidirectional inclinometer mounting frame from top to bottom in sequence, one is a positioning hole which is a conventional round hole, and the other is an angle adjusting hole which is a circular arc hole.

The two bolt holes, namely the positioning hole and the angle adjusting hole, can be used for adjusting the initial angle of the unidirectional inclinometer. The positioning hole is only used for fixing the position of the unidirectional inclinometer in the auxiliary tool; the arc hole is the angle modulation hole, has two functions, and firstly is the position of fixed one-way inclinometer the same with the locating hole, still allows one-way inclinometer to rotate about in addition and adjusts initial angle, adjustable angle scope: -15 to +15°.

Further, an arched (inverted U-shaped) transverse groove is formed in the bottom surface, namely the F surface, the arched opening faces outwards, and the transverse groove is communicated 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; and an arched (inverted U-shaped) vertical groove is formed in the surface B, and the vertical groove penetrates from the surface E to the surface F and is used for clamping the vertical steel bars. On the B face, the transverse grooves are adjacent to the vertical grooves.

Further, the right side surface, namely the D surface, is a smooth and closed plane, and is free of holes or grooves.

Further, the cover at the top of the unidirectional inclinometer auxiliary tool is a top cover, the top cover forms an E surface, the right surface, namely a D surface, is connected with the top cover through a hinge, and the hinge is fixed on the top cover and the D surface at the same time; the top cover can rotate around the hinge to realize opening action; at the same time, the top cover is also provided with an arched groove which is matched with the vertical groove on the B surface. The top cover is also provided with a wire outlet groove which is used for guiding an observation cable of the unidirectional inclinometer from the inside of the auxiliary tool to the outside.

Further, the wire outlet slot is an elongated U-shaped slot that extends from an edge of the top surface to the middle.

Further, the unidirectional inclinometer further comprises a mounting frame. One end of the unidirectional inclinometer is fixedly connected to an L-shaped mounting frame, the short side of the bottom of the mounting frame is fixedly connected with one end of the bottom of the unidirectional inclinometer, the unidirectional inclinometer is arranged inside the L-shaped mounting frame, and the other end of the unidirectional inclinometer is connected with an observation cable. Two circular holes are formed in the vertical long edge of the mounting frame, and positioning bolts and angle adjusting bolts are respectively arranged in the two circular holes.

Further, a certain gap is formed between the unidirectional inclinometer and the vertical long side of the mounting frame, and the unidirectional inclinometer is used for inserting and moving the bolts. The positioning bolt extends into the positioning hole and can not move left and right, and is only used for fixing the instrument. The angle adjusting bolt extends into the angle adjusting hole and can rotate left and right along an arc track in an arc adjusting groove of the angle adjusting hole, so that the initial angle is adjusted.

Further, the unidirectional inclinometer is of a cylindrical structure.

Further, the C surface is the same as the D surface and is also a smooth closed plane; the difference is that a hinge is arranged on the inner side of the top of the C surface and is used for connecting an openable top cover.

The utility model provides a unidirectional inclinometer assists method of installing, its unidirectional inclinometer and unidirectional inclinometer assist utensil that adopts as previously described which 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 and an angle adjusting bolt on the mounting frame with a positioning hole and an angle adjusting hole of the auxiliary tool;

step four: fixing the auxiliary tool and the unidirectional inclinometer mounting frame by using a positioning bolt and an angle adjusting bolt, and screwing the bolts until the instrument angle can be still adjusted; adjusting the angle of the instrument observation cable to align with the outlet slot 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 is rotated anticlockwise for one half turn, and the angle 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.

Further, in the fifth step, the method for fixing the auxiliary tool to the steel bar 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 rotate in the two directions, and therefore, an instrument in the box cannot rotate, and the purpose of fixing the instrument is achieved;

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

The invention has the beneficial effects that:

according to the defects and shortcomings of difficult fixing, difficult guarantee of verticality, non-adjustable angle and the like of an instrument in the existing unidirectional inclinometer installation method, a convenient and adjustable unidirectional inclinometer auxiliary tool and an installation method thereof are specifically provided, and the purpose is to overcome the defects and shortcomings of the traditional installation method and improve and optimize the key technology. The technical scheme of the invention at least has the following beneficial effects:

(1) The installation procedure is simplified. The auxiliary tool (embedded box) is prefabricated and processed in batches through the lathe and the die, only one person is required to operate and install the auxiliary tool (embedded box) on site, forced binding materials such as wire binding iron wires and the like are not required, tools such as a binding hook and a vice are not required to be used, an installer can also reduce the cost to one person by multiple persons, and the auxiliary tool is safe and rapid through manual installation.

(2) Firm installation and instrument protection are realized. The auxiliary tool (embedded box) clamps the transverse reinforcing steel bars through the transverse grooves and clamps the vertical reinforcing steel bars through the vertical grooves, so that the auxiliary tool (embedded box) cannot move in two directions, and the embedded box can also protect an instrument from concrete falling impact and violent vibration of a vibrating rod, so that the instrument is protected to the greatest extent.

(3) The angle adjusting function is added. Through opening locating hole and angle regulating hole on assisting utensil (pre-buried box) surface for the real-time adjustment of angle becomes reality before concrete placement, optimizes and improves the too big problem of initial angle deviation when installing the instrument, has improved the measurement accuracy of the installation survival rate and the later stage of instrument, and measurement data's true degree and reliability improve by a wide margin.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic front view of a unidirectional inclinometer accessory.

FIG. 2 is a right side schematic view of the unidirectional inclinometer accessory.

FIG. 3 is a schematic top view of a unidirectional inclinometer accessory.

Fig. 4 is a schematic diagram of the front structure of the unidirectional inclinometer.

Fig. 5 is a schematic side view of a unidirectional inclinometer.

FIG. 6 is a schematic view of the bottom surface structure of the unidirectional inclinometer.

FIG. 7 is an expanded view of the various faces of the unidirectional inclinometer accessory.

FIG. 8 is a front perspective view of the unidirectional inclinometer when installed in an accessory.

FIG. 9 is a left side perspective view of the unidirectional inclinometer when installed in an accessory.

FIG. 10 is a bottom perspective view of the unidirectional inclinometer when installed in an accessory.

Fig. 11 is a schematic view of a unidirectional inclinometer accessory mounted to a transverse and vertical rebar.

Reference numerals, wherein:

1-a transverse groove; 2-vertical groove; 3-positioning holes; 4-angle adjusting hole; 5-wire outlet slot; 6-one-way inclinometer; 7, mounting rack; 8, angle adjusting bolts; 9-positioning bolts; 10-hinge.

Detailed Description

The system provided by the invention and the working method thereof will be described in detail by way of example with reference to the accompanying drawings. It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.

Example 1

The embodiment mainly introduces a basic structure of a unidirectional inclinometer auxiliary tool.

As shown in fig. 1-3, which are three views of a unidirectional inclinometer accessory.

The utility model provides a utensil is assisted to unidirectional inclinometer, its is a box-like structure of area lid that has the inside cavity, assist the utensil and be the cuboid structure, square column structure promptly, assist utensil bottom to seal, top and set up the lid, the lid can be opened. The auxiliary tool is designed into a pre-buried box type, and a cavity in the middle of the auxiliary tool is used for accommodating and installing the unidirectional inclinometer.

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

As shown in fig. 1, a front schematic view of the unidirectional inclinometer accessory is shown. As shown in figure 1, the middle part of the A surface 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 initial angle of the unidirectional inclinometer can be adjusted by utilizing the two bolt holes, namely the positioning hole 3 and the angle adjusting hole 4. The positioning hole 3 is only used for fixing the position of the unidirectional inclinometer 6 in the auxiliary tool; the arc hole is the angle modulation hole, has two functions, and firstly is with the fixed unidirectional inclinometer 6's of locating hole 3 position, still allows unidirectional inclinometer 6 to rotate about in addition and adjusts initial angle, adjustable angle scope: -15 to +15°.

Further, as shown in fig. 1, an arched ("n" -shaped) transverse groove 1 is formed on the bottom surface, i.e. the F surface, and the arch opening is outward, and the transverse groove 1 is penetrated from the front surface, i.e. the bottom end of the a surface, to the opposite back surface, i.e. the bottom end of the B surface, for clamping the transverse steel bar; and an arched (inverted U-shaped) 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 the vertical steel bars. On the B-side, the transverse grooves 1 are adjacent to the vertical grooves 2.

As shown in fig. 2, a schematic view of the right side of the unidirectional inclinometer accessory is shown. As shown, the right side, i.e., the D side, is a smooth, closed plane with no openings or slots.

Further, as shown in fig. 3, a schematic top view of the unidirectional inclinometer accessory is shown. As shown in the figure, the auxiliary tool for unidirectional inclinometer further comprises a top cover, wherein 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, and the hinge 10 is fixed on the top cover and the D surface at the same time; the top cover can rotate around the hinge to realize opening action; at the same time, the top cover is also provided with an arched groove which is matched with the vertical groove on the B surface. 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.

Further, the outlet slot 5 is an elongated U-shaped slot, which extends from the edge of the top surface to the middle.

As shown in fig. 4, a schematic diagram of the front structure of the unidirectional inclinometer is shown.

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 a positioning bolt 9 and an angle adjusting bolt 8 are respectively arranged in the two circular holes.

As shown in fig. 5, which is a schematic side view of a unidirectional inclinometer. As shown in the figure, a certain gap is formed between the unidirectional inclinometer 6 and the vertical long side of the mounting frame 7, and the gap is used for the extension and movement of the bolts. The positioning bolt 9 extends into the positioning hole 3 and can not move left and right, and is only used for fixing the instrument. The angle adjusting bolt 8 extends 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.

As shown in fig. 6, a schematic diagram of the bottom structure of the unidirectional inclinometer is shown. As shown, the unidirectional inclinometer 6 has a cylindrical structure.

Further, 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 installed on the inner side of the top of the C surface for connecting the openable top cover.

As shown in fig. 7, which is an expanded view of the various faces of the unidirectional inclinometer accessory. As shown, the upper left side is a top surface and the middle left side is a left side surface that is connected to the top surface by a hinge 10. The middle part of the left side is provided with a left side face, a front face, a right side face and a back face in sequence. The lower left side in the figure is the bottom surface.

Example two

The present embodiment is based on the first embodiment, and mainly describes a method for installing a unidirectional inclinometer accessory.

As shown in fig. 8, which is a front perspective view of the unidirectional inclinometer when it is fitted into an accessory.

As shown in fig. 9, which is a left side perspective view of the unidirectional inclinometer when it is fitted into an accessory.

As shown in fig. 10, which is a bottom perspective view of the unidirectional inclinometer when it is fitted into an accessory.

As shown in fig. 11, a schematic view of the unidirectional inclinometer accessory mounted to the transverse and vertical bars.

The installation method of the unidirectional inclinometer auxiliary tool adopts the unidirectional inclinometer auxiliary tool as described above, and comprises the following steps:

step three: loading the unidirectional inclinometer into an auxiliary tool, and 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 respectively;

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 still be 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 anticlockwise for one half turn, and the angle 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 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 connecting the cable into an MCU or a secondary instrument, thereby completing the installation of the unidirectional inclinometer.

(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.

Example III

The present embodiment is performed based on the foregoing embodiment, and a practical application case of the foregoing embodiment will be mainly described.

The present invention will be further described with reference to the actual engineering and the effect thereof will be verified. The specific embodiments described herein are to be considered in an illustrative sense only and are not intended to limit the invention.

In order to study the stability and deformation problems of a lock chamber structure of a ship lock engineering, the whole structure in the construction and water-through operation process needs to be monitored and detected on site. Monitoring the change of inclination angle generated by the gate chamber wall along with time and backfill elevation is a precondition for deformation and stable analysis of the gate chamber.

And a full section and a half section are arranged together according to the monitoring requirement and are used as monitoring test sections, and three lock chamber walls are arranged together. The gate wall is 15m in height, one measuring line is arranged from the top to the bottom, 5 measuring points are arranged in total, and the distance between each measuring point is 3m, and the unidirectional inclinometer auxiliary tool and the installation method provided by the invention are adopted. The installation of the instrument completely meets the design requirement, the embedded boxes of the unidirectional inclinometer are firmly clamped on the transverse steel bars and the vertical steel bars, the looseness is avoided, the survival rate is 100%, and the initial angles of the instrument are all zero. After long-term monitoring, the data change of the observation data is well regulated and completely matched with the actual situation, so that the unidirectional inclinometer works normally, and the inclination angle and relative horizontal displacement data of the chamber wall are accurate, real and high in credibility. Powerful data support is provided for analyzing the internal stress acting on the chamber wall and the distribution thereof and researching the stability and deformation of the integral chamber structure with the unloading plate.

As described above, the present invention can be preferably implemented. Variations, modifications, substitutions, integration and alterations to these embodiments are within the scope of this disclosure for those skilled in the art without departing from the principles and spirit of this disclosure. The invention is not specifically described or defined in any particular section and is practiced using prior art techniques.

Claims

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 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;

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:

(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.