Concentric arc wire laying device and method

Abstract

The application provides a concentric circular arc pay-off device and method, and belongs to the technical field of building engineering. The device comprises a horizontal monitoring device, an adjusting and positioning device and an adjusting pay-off device. The horizontal monitoring device comprises three scales, a level bubble is arranged at the middle part of the scale, and a long slot is arranged at both ends of the scale. The three scales are partially overlapped through the long slots to form a triangle with the head and tail being connected. The overlapping parts of the two long slots at the three corners of the triangle form two adjusting and positioning holes and a pay-off positioning hole. The adjusting and positioning device comprises a first inner thread hollow screw rod and an outer thread positioning nail arranged in the adjusting and positioning hole. The adjusting pay-off device comprises a second inner thread hollow screw rod and an outer thread positioning pen arranged in the pay-off positioning hole. The application can solve the problems of the existing arc building pay-off method, such as easy deviation, large data information and large rework workload.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, and more particularly to a concentric circular arc line laying device and method. BACKGROUND

[0002] In building design engineering, circular and arc-shaped buildings, as a unique form, are gradually showing their unique charm and broad application prospects in various fields. The concentric circular arc structure, due to its unique form aesthetics and structural characteristics, has gradually become an important part of modern building design.

[0003] However, the positioning and laying of such structures often faces many challenges and difficulties, such as difficulty in positioning the center of the circle, geometric complexity of the building structure blocking the laying angle of view, large amount of data calculation, and difficulty in precision control.

[0004] Currently, for the design of concentric circular arcs, the spacing between layers of circular arcs is usually measured by a steel ruler. The positioning of each point on the concentric circular arc is closely related to the determination of the tangent of the circular arc, and deviations are prone to occur. If precise instruments such as total stations are used for positioning, a large amount of data information needs to be obtained, and if an operation error occurs, the rework workload will be large. SUMMARY

[0005] In view of the above problems, the purpose of the present application is to provide a concentric circular arc line laying device and method to solve the problems of deviation, large amount of data information, and large rework workload when an operation error occurs in the existing arc-shaped building line laying method.

[0006] The concentric circular arc line laying device provided by the present application is used for concentric circular arc line laying in building engineering, and is characterized by comprising a horizontal monitoring device, an adjusting and positioning device, and an adjusting and laying device.

[0007] The horizontal monitoring device comprises three scales, a level bubble is arranged in the middle of the scale surface, long grooves are arranged at both ends of the scale surface, the three scales are partially overlapped through the long grooves to form a triangular shape with the first end connected to the second end, and two adjusting and positioning holes and one line laying positioning hole are formed at the overlapping parts of the two long grooves at the three corners of the triangular shape.

[0008] The adjusting and positioning device comprises a first inner thread hollow screw rod inserted into the adjusting and positioning hole, and an outer thread positioning nail with a sharp head downwardly connected to the inside of the first inner thread hollow screw rod through a thread.

[0009] The adjusting and laying device comprises a second inner thread hollow screw rod inserted into the line laying positioning hole, and an outer thread positioning pen with a pen nib downwardly connected to the inside of the second inner thread hollow screw rod through a thread arranged on the outer wall of the pen body.

[0010] In addition, preferably, a first screw nut is arranged outside the top of the first inner-thread hollow screw rod; and / or a second screw nut is arranged outside the top of the second inner-thread hollow screw rod.

[0011] In addition, preferably, the first screw nut is a butterfly nut; and / or the second screw nut is a butterfly nut.

[0012] In addition, preferably, the side of the ruler is Z-shaped.

[0013] In addition, preferably, the length of the ruler is 2-3 m and the thickness is 3-5 mm.

[0014] In addition, preferably, the ruler is an aluminum alloy ruler, a stainless steel ruler or a hot-dipped galvanized steel ruler.

[0015] In addition, preferably, the outer-thread positioning pin is a cross-shaped outer-thread positioning pin.

[0016] The concentric circular arc staking-out method provided by the application adopts the concentric circular arc staking-out device described above to stake out a concentric circular arc building, and comprises the following steps:

[0017] Step S1: accurately determining one arc line of the concentric circular arc building by using a staking-out device as a known arc line and determining an arbitrary point on a to-be-staked arc line as a known staking-out point;

[0018] Step S2: adjusting the length of the ruler so that the two outer-thread positioning pins are located at any two points of the known arc line, the outer-thread positioning pen is located at the known staking-out point, the relative height of the outer-thread positioning pins and the outer-thread positioning pen is adjusted so that the bubble is centered, and the ruler is leveled;

[0019] Step S3: under the condition that the bubble is centered, moving the outer-thread positioning pins along the known arc line, and synchronously moving the outer-thread positioning pen to form a new arc line;

[0020] Step S4: taking the new arc line as the to-be-staked arc line of the concentric circular arc building to complete the staking-out process of the concentric circular arc of the concentric circular arc building.

[0021] In addition, preferably, the staking-out device is a total station, and the known arc line is an outer arc line or an inner arc line of the concentric circular arc building.

[0022] In addition, preferably, before taking the new arc line as the to-be-staked arc line of the concentric circular arc building, the method further comprises:

[0023] The new arc line is checked, and the new arc line that meets the preset checking standard after the checking is taken as the to-be-laid arc line of the concentric circular arc building.

[0024] The method for checking the new arc line comprises the following steps:

[0025] The length of the ruler is adjusted, the outer wire positioning nail is located at any two points at the end of the known arc line, the outer wire positioning pen is located at any point of the new arc line, the relative height of the outer wire positioning nail and the outer wire positioning pen is adjusted to make the bubble of the level on the ruler centered, and the ruler is leveled;

[0026] Under the condition of keeping the bubble centered, the outer wire positioning nail is moved along the known arc line from one end to the other end, and the mark left by the synchronous movement of the outer wire positioning pen at each preset position of the movement of the outer wire positioning nail is taken as a target position mark;

[0027] The deviation distance between the target position mark and the corresponding position on the new arc line is calculated;

[0028] If the deviation distance is within a preset allowable range, it is determined that the corresponding position of the new arc line meets the preset checking standard, otherwise, the remaining un-checked part of the new arc line is re-laid and checked by using the concentric circular arc laying device with the corresponding position of the new arc line as an end point, until a new arc line meeting the preset checking standard is obtained, which is taken as the to-be-laid arc line of the concentric circular arc building.

[0029] As can be seen from the above technical solutions, the concentric circular arc laying device and method provided by the application can determine a known arc line and a known point of a to-be-laid arc line by means of precise laying instruments, and then complete the laying of the to-be-laid arc line by using the principle of triangular positioning. Specifically, the levelness of a triangular plane formed by three rulers is monitored by using the bubble of the level on the horizontal monitoring device, and then the two adjusting positioning devices are used to move on the known arc line, and the adjusting laying device placed at the known point is used to draw the to-be-laid arc line by using the principle of triangular positioning. The three rulers are connected in a head-to-tail manner by the adjusting positioning device and the adjusting laying device through the long slot, and the length is adjustable. If the known arc line and the to-be-laid arc line are not at the same elevation, the height of the outer wire positioning nail and the outer wire positioning pen can be adjusted for leveling, which is highly flexible and widely applicable. The application can effectively solve the problems of difficult positioning and laying precision control of concentric circular arcs, greatly reduce the use of precise instruments such as total stations and save the time for obtaining a large amount of data information, improve the laying work efficiency, reduce the construction cost, and has great popularization value.

[0030] To the accomplishment of the foregoing and related ends, one or more aspects of the application comprise the features hereinafter fully described. The following description and the annexed drawings set forth in detail certain illustrative aspects of the application. These aspects are indicative, however, of but a few of the various ways in which the principles of the application can be employed. Other aspects and advantages of the application will become apparent from the following detailed description, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] Other objects and results of the application will become apparent from the following detailed description taken in conjunction with the accompanying drawings.

[0032] Figure 1 Structure diagram of concentric arc wire laying device according to an embodiment of the application;

[0033] Figure 2 Lateral sectional view of scale according to an embodiment of the application;

[0034] Figure 3 Top view of adjusting wire laying device according to an embodiment of the application;

[0035] Figure 4 Lateral sectional view of adjusting wire laying device according to an embodiment of the application;

[0036] Figure 5 Bottom view of adjusting wire laying device according to an embodiment of the application;

[0037] Figure 6 Lateral sectional view of adjusting positioning device according to an embodiment of the application;

[0038] Figure 7 Flow chart of concentric arc wire laying method according to an embodiment of the application;

[0039] Figure 8 Flow chart of concentric arc wire laying method according to an embodiment of the application;

[0040] In the drawings: 1 - scale, 11 - level bubble, 12 - long slot, 2 - adjusting positioning device, 21 - first inner thread hollow screw, 22 - outer thread positioning pin, 23 - first nut, 3 - adjusting wire laying device, 31 - second inner thread hollow screw, 32 - outer thread positioning pen, 33 - second nut.

[0041] The same reference numbers in all the drawings indicate corresponding or similar components or features. DETAILED DESCRIPTION

[0042] In view of the foregoing, in the prior art, the layout method of the arc-shaped building has problems of easy deviation, large amount of data information, large workload of rework when operation fails, etc.

[0043] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0044] In order to illustrate the concentric arc layout device and method provided by the present application, Figure 1 The structure of the concentric arc layout device according to the embodiment of the present application is shown; Figure 2 The lateral cross-sectional structure of the scale according to the embodiment of the present application is shown; Figure 3 The top view structure of the adjustment layout device according to the embodiment of the present application is shown; Figure 4 The lateral cross-sectional structure of the adjustment layout device according to the embodiment of the present application is shown; Figure 5 The bottom view structure of the adjustment layout device according to the embodiment of the present application is shown; Figure 6 The lateral cross-sectional structure of the adjustment positioning device according to the embodiment of the present application is shown; Figure 7 The flow of the concentric arc layout method according to the embodiment of the present application is shown; Figure 8 The demonstration process of the concentric arc layout method according to the embodiment of the present application is shown.

[0045] As Figures 1 to 6 As shown in the drawings, the concentric arc layout device provided by the present application is used for the concentric arc layout in building engineering, which comprises a horizontal monitoring device, an adjustment positioning device 2 and an adjustment layout device 3; wherein the horizontal monitoring device comprises three scales 1, a level bubble 11 is arranged in the middle of the scale surface of the scale 1, a long slot 12 is arranged at both ends of the scale surface of the scale 1, the three scales 1 are partially overlapped to form a triangle with the butt joint through the long slots 12, and the overlapping parts of the two long slots 12 at the three corners of the triangle form two adjustment positioning holes and one layout positioning hole, respectively; the adjustment positioning device 2 comprises a first inner thread hollow screw 21 arranged in the adjustment positioning hole and an outer thread positioning nail 22 with a sharp head downward and threadedly connected inside the first inner thread hollow screw 21; the adjustment layout device 3 comprises a second inner thread hollow screw 31 arranged in the layout positioning hole and an outer thread positioning pen 32 with a pen nib downward and threadedly connected inside the second inner thread hollow screw 31 through the thread arranged on the outer wall of the pen body.

[0046] The "first", "second" and "third" in the present application are used to distinguish the positions of the components and do not involve special meanings.

[0047] The outer-silk positioning pen 32 is any type of pen with a threaded structure on the outer periphery of the pen body, such as a pencil, which can be provided with a threaded structure on the outer periphery of the pencil body; of course, it can also be other types, such as a ballpoint pen, a signing pen, etc., and the present application does not make special limitations thereon.

[0048] By the structural design of the horizontal monitoring device, the adjusting positioning device 2 and the adjusting line laying device 3, when laying a line on the arc line of the concentric circular arc building, only one known point of the to-be-laid arc line and a known arc line are determined by means of a precise line laying instrument, the line laying of the to-be-laid arc line can be completed by using the triangular positioning principle; specifically, the levelness of the triangular plane formed by the three scales 1 is monitored by using the level bubble 11 on the horizontal monitoring device, and the positioning movement on the known arc line is performed by using the two adjusting positioning devices 2, and the to-be-laid arc line is drawn by using the triangular positioning principle through the adjusting line laying device 3 placed at the known point, the three scales 1 are connected in a head-to-tail manner through the long slot 12 by the adjusting positioning device 2 and the adjusting line laying device 3, and the length is adjustable; if the known arc line and the to-be-laid arc line are not at the same elevation, the height of the outer-silk positioning nail 22 and the outer-silk positioning pen 32 can be adjusted to perform the flattening treatment, which is high in flexibility and wide in application; the present application can effectively solve the problems of difficult positioning and laying precision control of the concentric circular arc, greatly reduces the use of precise instruments such as total stations and saves the time for obtaining a large amount of data information, improves the line laying work efficiency, reduces the construction cost, and has great popularization value.

[0049] As a preferred scheme of the present application, a first nut 23 is sleeved on the outside of the top of the first inner-silk hollow screw rod 21; and / or, a second nut 33 is sleeved on the outside of the top of the second inner-silk hollow screw rod 31.

[0050] Specifically, the first nut 23 is convenient for adjusting the fixed connection between the two scales 1 by the first inner-silk hollow screw rod 21; and the second nut 33 is convenient for adjusting the fixed connection between the two scales 1 by the second inner-silk hollow screw rod 31.

[0051] As a preferred scheme of the present application, the first nut 23 is a butterfly nut; and / or, the second nut 33 is a butterfly nut.

[0052] It should be noted that the first nut 23 and the second nut 33 are preferably but not limited to butterfly nuts.

[0053] As a preferred scheme of the present application, the side surface of the scale 1 is Z-shaped.

[0054] Specifically, by setting the side surface of the scale 1 as Z-shaped, it is ensured that when the three scales 1 are connected in a head-to-tail manner and are placed horizontally, the level bubbles 11 thereon can all be kept centered.

[0055] As a preferred scheme of the present application, the length of the ruler 1 is 2-3 m, and the thickness is 3-5 mm.

[0056] It should be noted that the length of the ruler 1 is preferably but not limited to 2-3 m, and the thickness is preferably but not limited to 3-5 mm. The present application does not make special limitation on the length and thickness of the ruler 1.

[0057] As a preferred scheme of the present application, the ruler 1 is an aluminum alloy ruler or a stainless steel ruler or a hot-dipped galvanized steel ruler.

[0058] It should be noted that the ruler 1 is preferably but not limited to an aluminum alloy ruler or a stainless steel ruler or a hot-dipped galvanized steel ruler. The present application does not make special limitation on this.

[0059] As a preferred scheme of the present application, the external thread positioning nail 22 is a cross external thread positioning nail.

[0060] As shown in Figure 7 and Figure 8 The present application provides a concentric circular arc staking-out method, which adopts the concentric circular arc staking-out device as described above to stake out a concentric circular arc building, and includes the following steps:

[0061] Step S1, accurately determining a circular arc of the concentric circular arc building by using the staking-out device as a known circular arc and determining an arbitrary point on a to-be-staked circular arc as a known staking-out point;

[0062] Step S2, adjusting the length of the ruler 1 so that the two external thread positioning nails 22 are located at any two points of the known circular arc, the external thread positioning pen 32 is located at the known staking-out point, and the water level bubble 11 is centered by adjusting the relative height of the external thread positioning nail 22 and the external thread positioning pen 32, so that the three rulers 1 are leveled;

[0063] Step S3, moving the external thread positioning nail 22 along the known circular arc while keeping the water level bubble 11 centered, and the external thread positioning pen 32 moves synchronously to form a new arc line;

[0064] Step S4, taking the new arc line as the to-be-staked circular arc of the concentric circular arc building, to complete the staking-out process of the concentric circular arc of the concentric circular arc building.

[0065] As a preferred scheme of the present application, the staking-out device is a total station, and the known circular arc is an outer arc line or an inner arc line of the concentric circular arc building.

[0066] It should be noted that the setting-out device is preferably but not limited to a total station. The total station can be used to accurately determine an arc line of the concentric circular arc building and a point of another arc line to be set out concentrically with the arc line, i.e. the known arc line and the known setting-out point in the present application. The known arc line can be an outer arc line of the concentric circular arc building or an inner arc line, i.e. the setting-out can be performed on the inner arc line of the known concentric circular arc building to the outer arc line concentric therewith or on the outer arc line of the known concentric circular arc building to the inner arc line concentric therewith. The following will be described in detail taking the known arc line as the outer arc line and the setting-out being performed on the inner arc line thereof as an example:

[0067] The three scales 1 are assembled in a predetermined installation order. During installation, it is necessary to ensure that the three scales 1 are in a horizontal state. When the two arc lines (the known arc line and the arc line to be set out) are not at the same elevation, it is necessary to adjust the outer thread positioning nails 22 and the cross outer thread positioning pen 32 to perform leveling.

[0068] The total station is used to accurately set out a point e (the setting-out point) on the known arc line AB and the arc line CD to be set out. The length of the scale 1 is adjusted so that the outer thread positioning nails 22 of the two adjusting positioning devices 2 are placed at any two points (f point and g point) on the known arc line AB, and the outer thread positioning pen 32 of the setting-out device 3 is placed at the e point. Then, the relative height of the outer thread positioning nails 22 and the outer thread positioning pen 32 is adjusted by using a cross screwdriver or the like to ensure that the level vials 11 on the three scales 1 are centered, i.e. the three scales 1 are leveled. Finally, the outer thread positioning nails 22 are moved along the known arc line AB, and it is ensured that the f point and the g point are always located on the known arc line AB. The arc CD formed by the synchronous movement of the outer thread positioning pen 32 is the arc line to be set out.

[0069] As a preferred scheme of the present application, before the new arc line is taken as the arc line to be set out of the concentric circular arc building, the following steps are further included:

[0070] The new arc line is checked, and the new arc line meeting the preset checking standard after the checking is taken as the arc line to be set out of the concentric circular arc building; wherein,

[0071] The method for checking the new arc line includes:

[0072] The length of the scale 1 is adjusted so that the outer thread positioning nails 22 are located at any two points at the end of the known arc line, and the outer thread positioning pen 32 is located at any point of the new arc line. The relative height of the outer thread positioning nails 22 and the outer thread positioning pen 32 is adjusted to center the level vials 11 on the three scales 1, so that the three scales 1 are leveled;

[0073] Under the condition that the water level bubble 11 is centered, the outer wire positioning nail 22 is moved along the known arc from one end to the other end, and the mark left by the synchronous movement of the outer wire positioning pen 32 every time the outer wire positioning nail 22 moves a preset position is taken as the target position mark;

[0074] The deviation distance between the target position mark and the corresponding position on the new arc is calculated;

[0075] If the deviation distance is within the preset allowable range, it is determined that the corresponding position of the new arc meets the preset checking standard, otherwise, the corresponding position of the new arc is taken as an end point, and the remaining unverified part of the new arc is re-staked and checked using the concentric circular arc staking device until a new arc that meets the preset checking standard is obtained as the to-be-staked arc of the concentric circular arc building.

[0076] Specifically, the length of the scale 1 is adjusted so that the outer wire positioning nails 22 of the two adjusting positioning devices 2 are placed at any two points (f point, g point) on the known arc AB, and the outer wire positioning pen 32 of the staking device 3 is placed at any point (e point) on the new arc CD. Then, the relative height of the adjusting outer wire positioning nail 22 and the cross outer wire positioning pen 32 is adjusted using a cross screwdriver or the like tool to make the water level bubbles 4 of the three scales 1 all centered, that is, the leveling of the three scales 1 is completed. The outer wire positioning nail 22 is moved along the known arc AB, and it is ensured that the f point and the g point are always located on the known arc AB. The outer wire positioning pen 32 forms a new circular arc C’D’ in the synchronous movement process. The distance between the circular arc CD and the circular arc C’D’ is measured, which is the deviation. If the deviation is within the allowable range, the checking is completed, otherwise, the circular arc needs to be re-staked and checked.

[0077] It can be seen from the above specific embodiments that the concentric circular arc line releasing device and method provided by the application can, through the structural design of the horizontal monitoring device, the adjusting positioning device and the adjusting line releasing device, release the line of the arc to be released by using the triangular positioning principle only by determining a known arc and a known point of the arc to be released by means of a precise line releasing instrument when the line of the concentric circular arc building is released; specifically, the horizontal degree of the triangular plane formed by the three scales is monitored by using the bubble of the horizontal monitoring device, then the two adjusting positioning devices are used to position and move on the known arc, and the arc to be released is drawn by using the triangular positioning principle by the adjusting line releasing device placed at the known point; the three scales are connected by the adjusting positioning device and the adjusting line releasing device through the long slot at the head and tail, and the length is adjustable; if the known arc and the arc to be released are not at the same elevation, the height of the outer wire positioning nail and the outer wire positioning pen can be adjusted to process the leveling, and the flexibility is high and the application is wide; the application can effectively solve the problems of the difficulty in the positioning line releasing precision control and positioning checking of the concentric circular arc, greatly reduces the use of precise instruments such as total station and saves the time for obtaining a large amount of data information, improves the line releasing work efficiency, reduces the construction cost, and has great popularization value.

[0078] The concentric circular arc line releasing device and method according to the application are described above with reference to the drawings by way of example. However, those skilled in the art should understand that various improvements can be made to the above-mentioned concentric circular arc line releasing device and method according to the application without departing from the content of the application. Therefore, the protection scope of the application should be determined by the content of the appended claims.

Claims

1. A concentric circle arc staking out device for use in staking out a concentric circle arc in a construction work, characterized in that, The horizontal monitoring device, the adjusting positioning device and the adjusting line laying device are included. The horizontal monitoring device includes three rulers, a level bubble is arranged in the middle of the ruler surface, two long grooves are arranged at both ends of the ruler surface respectively, three rulers are partially overlapped to form a triangle with the first end connected to the second end, and two adjusting positioning holes and a line laying positioning hole are formed at the overlapping parts of the two long grooves at the three corners of the triangle. The adjusting positioning device includes a first inner thread hollow screw rod arranged in the adjusting positioning hole and an outer thread positioning nail with a sharp head downward and connected to the inside of the first inner thread hollow screw rod through a thread. The adjusting line laying device includes a second inner thread hollow screw rod arranged in the line laying positioning hole and an outer thread positioning pen with a pen point downward and connected to the inside of the second inner thread hollow screw rod through a thread arranged on the outer wall of the pen body.

2. The concentric circular arc line laying device according to claim 1, wherein a first nut is arranged outside the top of the first inner thread hollow screw rod; and / or a second nut is arranged outside the top of the second inner thread hollow screw rod.

3. The concentric circular arc line laying device according to claim 2, wherein the first nut is a butterfly nut; and / or the second nut is a butterfly nut.

4. The concentric circular arc line laying device according to claim 1, wherein the side surface of the ruler is in a Z shape.

5. The concentric circular arc line laying device according to claim 1, wherein the length of the ruler is 2-3 m and the thickness is 3-5 mm.

6. The concentric circular arc line laying device according to claim 1, wherein the ruler is an aluminum alloy ruler, a stainless steel ruler or a hot-dipped galvanized steel ruler.

7. The concentric circular arc line laying device according to claim 1, wherein the outer thread positioning nail is a cross outer thread positioning nail. The concentric circular arc line laying device according to any one of claims 1-7 is used for laying lines for a concentric circular arc building, including the following steps: Step S1: a line laying device is used to accurately determine one arc line of the concentric circular arc building as a known arc line and determine an arbitrary point on a to-be-laid arc line concentric with the known arc line as a known line laying point; Step S2: the length of the ruler is adjusted so that the two outer thread positioning nails are located at any two points of the known arc line, the outer thread positioning pen is located at the known line laying point, the relative height of the outer thread positioning nail and the outer thread positioning pen is adjusted so that the level bubble is centered, and the ruler is leveled; Step S3: under the condition that the level bubble is centered, the outer thread positioning nail is moved along the known arc line, and the outer thread positioning pen is synchronously moved to form a new arc line; Step S4: the new arc line is taken as the to-be-laid arc line of the concentric circular arc building, and the line laying process for the concentric circular arc of the concentric circular arc building is completed.

9. The concentric circular arc line laying method according to claim 8, wherein the line laying device is a total station; and the known arc line is an outer arc line or an inner arc line of the concentric circular arc building. ​ ​ 8. A concentric circle arc pay-off method, characterized by, ​ ​ ​ ​ ​ ​ ​ ​ 10. The concentric circle arc pay-off method of claim 8, wherein, Before the new arc line is taken as the to-be-laid arc line of the concentric circular arc building, further comprising: checking the new arc line, and taking the new arc line meeting preset checking standards after checking as the to-be-laid arc line of the concentric circular arc building; wherein, the method for checking the new arc line comprises: adjusting the length of the ruler, so that the outer wire positioning nail is located at any two points of the end of the known arc line, the outer wire positioning pen is located at any point of the new arc line, the relative height of the outer wire positioning nail and the outer wire positioning pen is adjusted to make the bubble of the level on the ruler centered, so as to make the ruler leveled; under the condition of keeping the bubble centered, moving the outer wire positioning nail along the known arc line from one end to the other end, and taking the mark left by the synchronous movement of the outer wire positioning pen at each preset position of the outer wire positioning nail as a target position mark; calculating the deviation distance between the target position mark and the corresponding position on the new arc line; if the deviation distance is within the preset allowable range, it is determined that the corresponding position of the new arc line meets the preset checking standards, otherwise, taking the corresponding position of the new arc line as an end point, using the concentric circular arc laying device to re-lay and check the remaining un-checked part of the new arc line until a new arc line meeting the preset checking standards is obtained, which is taken as the to-be-laid arc line of the concentric circular arc building.

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