Measuring device for steel template positioning and use method thereof

Abstract

The invention relates to a measuring device for steel formwork positioning and a using method thereof, and belongs to the field of engineering surveying, the measuring device for steel formwork positioning and the using method thereof comprise a centering disc, a framework, a measuring rod, a connecting rod and a connecting rod, and the centering disc is used for being connected with a measuring instrument and kept horizontal. The framework comprises a base used for being connected with a steel formwork, a transverse framework used for containing the centering disc, a vertical framework used for being connected between the base and the transverse framework in a supporting mode, a first supporting framework and a second supporting framework. The measuring device can be installed on a high pier steel formwork on site and can be repeatedly used on multiple piers, the centering disc can be installed on site on an installation occasion, the measuring device can be suitable for various occasions, limitation is few, assembling can be achieved only through welding and bolting, the centering disc is installed on site, it can be guaranteed that the centering disc is horizontal, adjustment is convenient, and stability is high; the device is convenient to carry, can be recycled and reused, is large in visual range and is not shielded when being installed and used on a pier, is convenient for rearview, and is high in measurement precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engineering surveying, in particular to a measuring device for positioning a steel formwork and a method for using the same. BACKGROUND

[0002] In the process of positioning the formwork for bridge pier construction, the characteristic points of the formwork need to be positioned and measured, and adjusted. In the process of measurement, the existing technology usually adopts polar coordinate method to measure the characteristic points of the formwork. However, in actual construction, the following shortcomings exist: 1. The instrument is set up under the pier, and as the height of the pier increases, the measured pier itself becomes an obstruction, and the number of characteristic points that can be measured becomes less and less. This requires setting up the instrument at different angles and multiple positions multiple times, which greatly reduces the work efficiency. 2. Due to the limitation of the site topography, when the height of the pier reaches a certain level, the instrument set up under the pier has a too large angle of elevation, and multiple instruments need to be set up, which will cause error accumulation effect and result in a decrease in measurement accuracy. 3. Due to the influence of topographic conditions, the distance of the rear view after setting up the instrument is much smaller than the distance of the front view under the visible conditions, which reduces the measurement accuracy. At the same time, the control points near the pier under poor topographic conditions are generally set in a higher and open place, which results in the situation that the rear view is satisfied but the front view is not, or the front view is satisfied but the rear view is not. 4. When the high pier reaches a certain height, the surrounding environment, wind, sunlight and temperature will have an impact on the pier. In addition, due to the influence of factors such as temperature change and concrete shrinkage, the pier will tilt to a certain extent. In order to reduce this influence, the measurement time should be as short as possible, but multiple station setting costs a lot. 5. When the high pier is in a valley topography, the control points are generally set in a higher place such as the top of the valley. When setting up the instrument near the pier, the height difference between the rear view point and the station setting point is too large, which makes the measurement inconvenient and the error large. By setting up the instrument on the pier, the height difference between the station setting point, the front view point and the rear view point can be reduced when the pier reaches a certain height, and the measurement accuracy can be improved.

[0003] 6. Generally, the total station instrument is set up on the high pier platform to observe all the three-dimensional coordinates of the characteristic points. This method needs to invest two groups of personnel and total station instruments to complete the measurement of the characteristic points on the tower top. The investment of manpower and material resources is large. In order to solve the problem of personnel, the existing technology first introduces the measurement reference point to the high pier formwork, and then sets up the total station instrument on the pier top construction platform to measure the rear view of the measurement reference point, and then completes the measurement of all the characteristic points on the formwork top. The limitation of this method is that the total station instrument needs to be set up on the ground to introduce the reference point first, and then moved to the pier top. At the same time, due to the slight instability of the pier top construction platform, the total station instrument cannot be directly set up on the tower top construction platform for measurement, and the reference point needs to be introduced again after each adjustment of the high pier formwork. This method is complicated to operate and time-consuming.

[0004] 7. The instrument is erected on the platform of the pier, and the platform is connected with the pier body with a gap, so the shaking is more serious. The use of tripod to erect the instrument is limited and cannot achieve the measurement conditions. Taking the railway high pier as an example, most of them are thin-walled hollow piers, and the pier body poured in layers has embedded steel bars, and there is not enough space to use the tripod to erect the instrument. SUMMARY

[0005] The embodiments of the present application provide a measuring device for positioning a steel formwork and a use method thereof, to solve the problem that the existing instrument is inconvenient to measure the formwork in the related art, the precision is affected, and the instrument is not convenient to disassemble and reuse.

[0006] The embodiments of the present application provide a measuring device for positioning a steel formwork, and a use method thereof. a centering disc, configured to be connected with a measuring instrument and kept horizontal; a framework, including a base configured to be connected with the steel formwork, a horizontal framework configured to place the centering disc, and a vertical framework configured to support a first support framework and a second support framework connected between the base and the horizontal framework.

[0007] In some embodiments, the base is provided with a fixing bolt and a jacking bolt configured to connect the steel formwork.

[0008] In some embodiments, the centering disc is arranged on the horizontal framework and kept horizontal.

[0009] In some embodiments, the centering disc is made of stainless steel.

[0010] In some embodiments, the centering disc is provided with an adapter screw configured to connect the measuring device.

[0011] In some embodiments, the vertical framework is arranged vertically between the horizontal framework and the base.

[0012] In some embodiments, the vertical framework and the horizontal framework are connected through the first support framework.

[0013] In some embodiments, the second support framework has two, and both of the two second support frameworks are arranged between the horizontal framework and the base.

[0014] In some embodiments, one end of the two second support frameworks is arranged at an end of the horizontal framework away from the vertical framework. The other end of the two second support frameworks away from the horizontal framework is arranged at the other end of the base.

[0015] The second aspect of the embodiments of the present application provides a use method of a measuring device for positioning a steel formwork, including the following steps: First, the first support framework, the second support framework, the vertical framework, the horizontal framework and the base are welded and assembled, and then connected with the steel template through the base; After the assembly is completed, the spirit level is placed on the centering disc, the fixed adjusting member is adjusted to make the centering disc in a horizontal state, then the adapter screw is vertically installed on the centering disc; Then, the total station is connected with the centering disc through the adapter screw, and leveling is performed; Subsequently, the station is set by the resection method, parameters such as the environmental temperature, air pressure and prism type are input, the control point coordinates are checked, after confirming that there is no error, the control points are sequentially viewed, the station is set after the completion, and the control point coordinates are measured for checking; The polar coordinate method is used for lofting, the characteristic points of the pier body are placed on the Nth pier body steel template, then the axis is measured to the size of the edge of the steel template to check the offset of the axis of the template, as the basis for adjusting the steel template, the coordinates of the control points are checked, and records are made, the steel template is adjusted according to the offset of the template recorded above; After the adjustment of the steel template is completed, the planar size of the top opening of the steel template is measured by the steel ruler, and compared with the measurement result of the total station; That is, after the adjustment of the steel template is completed each time, and the total station is leveled, the station is re-set according to the resection method again, and the setting accuracy is checked again, then the polar coordinate method is used for lofting, the characteristic points of the pier body are placed on the Nth pier body template, then the axis is measured to the size of the edge of the template to check the offset of the axis of the template, until the design requirements are met; The coordinates of the control points are checked, and records are made, and the total station and the measuring device are withdrawn after the error is confirmed.

[0016] The steel template positioning measuring device and the use method thereof provided in the embodiments of the present application, since the first support framework is welded between the vertical framework and the horizontal framework first, then the vertical framework is welded between the horizontal framework and the base, then one end of the first support framework and the second support framework is welded at the end of the horizontal framework away from the vertical framework, and is welded at the same position, and the other end is welded at the two ends of the base respectively, and then the base is connected with the steel template through the fixed bolt and the jacking bolt.

[0017] The measuring device can be installed on the high pier steel template on site, can be repeatedly used on multiple piers, the centering disc can be installed on site at the installation site, can be applied to various occasions, is less limited, can be assembled through welding and bolting, and the horizontal state of the centering disc can be ensured after the centering disc is installed on site, the adjustment is convenient, the stability is high, the centering disc is convenient to carry, can be recycled and reused, the visual range is large when the centering disc is installed on the pier, is not blocked, the viewing is convenient, and the measurement accuracy is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Fig. 1 A three-dimensional structural schematic diagram provided for an embodiment of this application; Fig. 2 This is a schematic diagram of the main view structure provided in an embodiment of this application; Fig. 3 This is a side view structural diagram provided for an embodiment of this application.

[0020] 1. Base; 2. Fixing bolts; 3. Tightening bolts; 4. Vertical frame; 5. Horizontal frame; 6. First support frame; 7. Second support frame; 8. Centering plate. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] This application provides a measuring device for positioning steel formwork and its usage method, which can solve the problems of existing instruments being inconvenient to set up for measuring formwork, affecting accuracy, and being inconvenient to disassemble and reuse.

[0023] See Figs. 1-3 As shown, the first aspect of this application provides a measuring device for positioning steel formwork, including... Guixin Plate 8 and skeleton.

[0024] Among them, the centering plate 8 is used to connect with the measuring instrument and keep it horizontal. The centering plate 8 can be installed on site in real time and reused on multiple piers. It can also enable the measuring instrument to be installed on site and reused, making it suitable for a variety of occasions.

[0025] The frame includes a base 1 for connecting with the steel template and a horizontal frame 5, a vertical frame 4, a first support frame 6, and a second support frame 7 that support the connection between the base 1 and the centering plate 8.

[0026] The Guixin Plate 8 can be installed onto the frame in real time at the measurement site, and assembly can be achieved through bolting and welding.

[0027] The base 1 is made of angle steel and has bolt holes for the fixing bolts 2 and tightening bolts 3 to pass through. The base 1 and the steel template can be disassembled and connected by bolts, so that the device can be recycled and reused, and it is also convenient for the installation and use of measuring instruments.

[0028] The horizontal frame 5, the vertical frame 4, the first support frame 6 and the second support frame 7 all adopt angle steel structure, and the first support frame 6 and the second support frame 7 also adopt 28mm steel bars in addition to angle steel structure.

[0029] In this embodiment, the centering plate 8 is set on the horizontal frame 5 and kept horizontal. The centering plate 8 is welded to the horizontal frame 5. Then, a spirit level is placed on the centering plate 8, and the adjusting parts on the centering plate 8 are adjusted to keep the centering plate 8 in a horizontal position.

[0030] In this embodiment, the centering plate 8 is made of stainless steel plate, and stainless steel has high strength and rigidity.

[0031] In this embodiment, the centering plate 8 is provided with an adapter screw for connecting the measuring device. The adapter screw is vertically installed on the centering plate 8, so that the measuring device can be directly connected to the centering plate 8 during assembly.

[0032] In some alternative embodiments, see Figs. 1-3 As shown, the base 1 is equipped with fixing bolts 2 and tightening bolts 3 for connecting the steel formwork. The fixing bolts 2 and tightening bolts 3 reliably connect and fix the base 1 to the steel formwork. When used repeatedly on multiple piers, the bolt connection is easy to disassemble and install, allowing it to be reused. Moreover, when installed on the pier, the field of view is large and unobstructed, and the rear view is convenient, which improves the measurement accuracy.

[0033] In some alternative embodiments, see Figs. 1-3 As shown, the vertical frame 4 is vertically arranged between the horizontal frame 5 and the base 1. One end of the vertical frame 4 is welded to the horizontal frame 5, and the other end is welded to the base 1. It is vertically arranged between the horizontal frame 5 and the base 1 and is located in the middle of the base 1.

[0034] The horizontal frame 5 and the vertical frame 4 are rigidly connected by welding and extend towards the outside of the steel formwork.

[0035] In this embodiment, the vertical frame 4 and the horizontal frame 5 are connected by a first supporting frame 6. After the vertical frame 4 and the horizontal frame 5 are welded together, one end of the first supporting frame 6 is connected to the vertical frame 4 and the other end is connected to the horizontal frame 5, so that the structure is reinforced and stabilized, and plays a strengthening role. The first supporting frame 6 is made of angle steel and 28mm steel bars.

[0036] In this embodiment, there are two second support frames 7, both of which are set between the transverse frame 5 and the base 1. The second support frames 7 also adopt the structure of angle steel and 28mm steel bars. The second support frames 7 are used to support the transverse frame 5, so as to avoid the transverse frame 5 having no load-bearing point at one end, which would easily lead to shaking and low structural strength.

[0037] In this embodiment, one end of each of the two second support frames 7 is located at the end of the horizontal frame 5 away from the vertical frame 4, and the ends of the two second support frames 7 located on the vertical frame 4 can be connected to each other.

[0038] The two second support frames 7 are located at opposite ends of the horizontal frame 5 at both ends of the base 1, forming a triangle with the base 1. The two second support frames 7 are also located on both sides of the vertical frame 4.

[0039] See Figs. 1-3 As shown, a second aspect of this application provides a method for using a measuring device for positioning steel formwork, comprising the following steps: First, weld the first support frame 6 to the vertical frame 4 and the horizontal frame 5. Then, weld the vertical frame 4 between the horizontal frame 5 and the base 1. Next, weld one end of the first support frame 6 and the second support frame 7 to the end of the horizontal frame 5 away from the vertical frame 4, and weld them to the same position. The other ends are welded to both ends of the base 1 respectively. Then, connect the base 1 to the steel template through the fixing bolts 2 and the tightening bolts 3.

[0040] The second step is to place a level on the centering plate 8 after assembly, adjust the fixing adjustment piece to make the centering plate 8 horizontal, and then install the adapter screw vertically into the centering plate 8.

[0041] Third, connect the total station to the centering plate 8 using the adapter screws and level it.

[0042] Step 4: Then, use the resection method to set up the station. Input parameters such as ambient temperature, air pressure, and prism type, check the coordinates of the control points, and after confirming that they are correct, backsight control points 1 and 2 in sequence. After completing the station setup, measure the coordinates of control point 3 for verification. The station setup accuracy control is: X≤5mm, Y≤5mm, H≤5mm. The error of the verification point must be ≤5mm. During the station setup process, pay attention to the alignment of the instrument and prism, as well as the input of the prism height.

[0043] Step 5: Use the polar coordinate method to lay out the pier feature points on the Nth section of the pier steel formwork. Then use a steel tape measure to measure the dimension from the axis to the edge of the steel formwork to verify the deviation of the formwork axis. This serves as the basis for adjusting the steel formwork. Verify the coordinates of control point 3, make a record, and adjust the steel formwork according to the formwork deviation recorded above.

[0044] Step 6: After the steel formwork is adjusted, use a steel ruler to measure the planar dimensions of the top opening of the steel formwork and compare them with the measurement results of the total station.

[0045] Step 7: Repeat steps 3 to 6 in sequence. After each steel formwork adjustment is completed and the total station is leveled, reset the station again using the resection method and check the station accuracy again. Then, use the polar coordinate method to lay out the pier feature points on the Nth pier formwork. Use a steel tape measure to measure the dimension from the axis to the edge of the formwork and check the deviation of the formwork axis until it meets the design requirements.

[0046] Step 8: Verify the coordinates of control point 3, record them, and once confirmed to be correct, dismantle the total station and measuring equipment.

[0047] The working principle and process of this application: When it is necessary to perform positioning measurements on the template, firstly, the first support frame 6 is welded to the vertical frame 4 and the horizontal frame 5. Then, the vertical frame 4 is welded between the horizontal frame 5 and the base 1. Next, one end of the first support frame 6 and the second support frame 7 is welded to the end of the horizontal frame 5 away from the vertical frame 4, and welded to the same position. The other ends are welded to both ends of the base 1 respectively. Then, the base 1 is connected to the steel template by fixing bolts 2 and tightening bolts 3.

[0048] After assembly, place a spirit level on the centering plate 8, adjust the fixing adjustment piece to make the centering plate 8 horizontal, and then install the adapter screw vertically into the centering plate 8.

[0049] Next, connect the total station to the centering plate 8 using the adapter screws and level it.

[0050] Then, the resection method is used to set up the station. Parameters such as ambient temperature, air pressure, and prism type are input. The coordinates of the control points are checked. After confirming that they are correct, control points 1 and 2 are backsighted in sequence. After the station is set up, the coordinates of control point 3 are measured for verification. The station setting accuracy is controlled as follows: X≤5mm, Y≤5mm, H≤5mm. The error of the verification point must be ≤5mm. During the station setting process, attention should be paid to the alignment of the instrument and prism, as well as the input of the prism height.

[0051] The polar coordinate method is used for layout. The characteristic points of the pier body are marked on the Nth section of the pier body steel formwork. Then, the dimensions from the axis to the edge of the steel formwork are measured with a steel tape measure to verify the deviation of the formwork axis. This serves as the basis for adjusting the steel formwork. The coordinates of control point 3 are verified and recorded. The steel formwork is adjusted according to the template deviation recorded above.

[0052] After the steel formwork is adjusted, the planar dimensions of the top opening of the steel formwork are measured with a steel ruler and compared with the measurement results of the total station.

[0053] Repeat steps four and five in sequence. After each steel formwork adjustment is completed and the total station is leveled, reset the station again using the resection method and check the station accuracy again. Then, use the polar coordinate method to lay out the pier feature points on the Nth pier formwork. Use a steel tape measure to measure the dimension from the axis to the edge of the formwork and check the deviation of the formwork axis until it meets the design requirements.

[0054] Verify the coordinates of control point 3, record them, and once confirmed to be correct, dismantle the total station and measuring equipment.

[0055] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0056] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A measuring device for positioning a steel formwork, characterized by, Comprising a centering disc (8) for connecting with a surveying instrument and keeping horizontal; a skeleton comprising a base (1) for connecting with a steel formwork, a transverse skeleton (5) for placing the centering disc (8), and a vertical skeleton (4) for supporting a first supporting skeleton (6) and a second supporting skeleton (7) connected between the base (1) and the transverse skeleton (5).

2. The surveying device for positioning a steel formwork according to claim 1, wherein: the base (1) is provided with a fixing bolt (2) and a jacking bolt (3) for connecting with the steel formwork.

3. The surveying device for positioning a steel formwork according to claim 1, wherein: the centering disc (8) is arranged on the transverse skeleton (5) and kept horizontal.

4. The surveying device for positioning a steel formwork according to claim 3, wherein: the centering disc (8) is made of stainless steel.

5. The surveying device for positioning a steel formwork according to claim 4, wherein: the centering disc (8) is provided with an adapter screw for connecting with the surveying device.

6. The surveying device for positioning a steel formwork according to claim 1, wherein: the vertical skeleton (4) is arranged perpendicularly between the transverse skeleton (5) and the base (1).

7. The surveying device for positioning a steel formwork according to claim 6, wherein: the vertical skeleton (4) and the transverse skeleton (5) are connected through the first supporting skeleton (6).

8. The surveying device for positioning a steel formwork according to claim 5, wherein: the second supporting skeleton (7) has two, and both of the second supporting skeletons (7) are arranged between the transverse skeleton (5) and the base (1).

9. The surveying device for positioning a steel formwork according to claim 6, wherein: one end of each of the two second supporting skeletons (7) is arranged at an end of the transverse skeleton (5) away from the vertical skeleton (4); the other end of each of the two second supporting skeletons (7) is arranged at an end of the base (1) away from the transverse skeleton (5).

10. A method of using a measuring device for positioning a steel formwork, the method using the measuring device for positioning a steel formwork according to any one of claims 1 to 9, characterized in that, Comprising first, the first supporting skeleton (6), the second supporting skeleton (7), the vertical skeleton (4), the transverse skeleton (5) and the base are welded and assembled, and then the base (1) is connected with the steel formwork; after the assembly, a level is placed on the centering disc (8), the fixing adjusting member is adjusted so that the centering disc (8) is in a horizontal state, and then the adapter screw is vertically installed on the centering disc (8); then the total station is connected with the centering disc (8) through the adapter screw and is leveled; then the stations are set by the resection method, the parameters such as the ambient temperature, the air pressure and the prism type are input, the control point coordinates are checked, after the confirmation of no error, the control point 1 and the control point 2 are sequentially viewed, the setting of the stations is completed, and the coordinates of the control point 3 are measured for checking; the polar coordinate method is used for lofting, the characteristic points of the Nth pier body steel formwork are lofted, the axis is measured to the steel formwork edge size by using a steel tape, the formwork axis deviation is checked, which is used as the basis for adjusting the steel formwork, the coordinates of the control point 3 are checked, the record is made, the formwork deviation according to the above record is used for adjusting the steel formwork. After the steel template adjustment is completed, the planar size of the top of the steel template is measured with a steel ruler and compared with the measurement result of the total station instrument; That is, after each steel template adjustment is completed and the total station instrument is leveled, the station is re-established according to the resection method, the station accuracy is checked again, the polar coordinate method is used again to lay out, the characteristic points of the pier body are laid out on the Nth pier body template, then the axis is measured to the template edge size to recheck the template axis deviation, and this is repeated until the design requirements are met; The coordinates of the control point 3 are rechecked, and records are made. After no error is found, the total station instrument and the measuring device are withdrawn.

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