Method for mapping of channelled masonry inner walls

Abstract

This invention belongs to the field of municipal engineering technology, specifically relating to a method for surveying the inner wall of a passageway-type masonry structure. The method includes the following steps: S1, based on the measurement results of the inner cavity of a completed section of the passageway-type masonry structure, determining the relationship between the actual radius and the designed radius of the inner cavity at the measurement point; S2, based on the measurement results at the measurement point, drawing the inner wall diagram of the completed section of the passageway-type masonry structure and recording the deviation data between the actual radius and the designed radius of the inner cavity. This method facilitates the accurate drawing of the inner wall diagram of the passageway-type masonry structure. Based on the measurement results, the inner wall of completed sections of the passageway-type masonry structure that do not meet design requirements can be rectified. When the quality deviation of a completed section of the passageway-type masonry structure is too large, the elevation of the support frame and arch support frame in the next section should be adjusted to ensure the construction quality of the next section of the passageway-type masonry structure. This method facilitates the drawing and quality control of the diagrams of each horizontal section of the passageway-type masonry structure.

Description

Technical Field

[0001] This invention belongs to the field of municipal engineering technology, specifically relating to a method for surveying the inner wall of a passageway-type masonry structure. Background Technology

[0002] The tunnel-type masonry referred to in this application has a circular internal cavity cross-section perpendicular to its own axis, and is widely used in underground engineering. During the construction of tunnel-type masonry, after each section is completed, it is necessary to determine whether the actual internal wall shape of the completed section matches the designed internal wall shape. Based on the conclusion, the internal wall of the completed section is then rectified. When the quality deviation of the completed section is too large, the elevation of the support frame and arch frame must be adjusted in the next section to ensure the construction quality of the next section of tunnel-type masonry.

[0003] Determining whether the actual inner wall shape of a completed section of a passageway masonry structure matches the designed inner wall shape typically involves workers visually assessing the actual shape and then drawing a diagram based on their findings. This method demands a high level of experience and observational skills from the workers, and different workers may arrive at different conclusions. It is not only inaccurate but also inefficient, time-consuming, and labor-intensive. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for surveying the inner wall of a passageway masonry structure, which is beneficial for the accurate drawing of the inner wall graphics of the passageway masonry structure.

[0005] The technical solution adopted by this invention to solve its technical problem is: a method for surveying the inner wall of a passageway-type masonry structure, comprising the following steps:

[0006] S1. Based on the measurement results of the inner cavity of the completed section of the channel-type masonry, determine the relationship between the actual radius of the inner cavity and the designed radius of the inner cavity of the completed section of the channel-type masonry at the measurement point.

[0007] S2. Based on the measurement results at the measurement point, draw the inner wall diagram of the completed section of the tunnel-type masonry and record the deviation data between the actual radius of the inner cavity and the designed radius of the inner cavity of the completed section of the tunnel-type masonry.

[0008] Furthermore, in step S1, a measuring device is used to measure the inner cavity of the completed section of the channel-type masonry.

[0009] The measuring device includes a support base and a mounting base rotatably mounted on the support base; the rotation center of the mounting base coincides with the axis L1 of the channel masonry.

[0010] It also includes an elastic measuring mechanism, which comprises a first elastic element and a measuring rod;

[0011] The axial direction of the measuring rod is parallel to the radial direction of the channel-type masonry. One end of the measuring rod is a driving end, and the other end is a supporting end. A first mounting chamber is provided inside the mounting base. The driving end of the measuring rod passes through the first mounting chamber, and the supporting end of the measuring rod is located outside the mounting base. The measuring rod is slidably engaged with the mounting base. A first limiting member is provided at the driving end of the measuring rod. A first elastic member is provided inside the first mounting chamber and is located between the side of the first limiting member away from the measuring rod and the inner wall of the first mounting chamber, so that the measuring rod makes linear reciprocating motion along the radial direction of the channel-type masonry.

[0012] The mounting base has an observation window that communicates with the first mounting chamber. The observation window has a length scale line arranged radially along the channel-type masonry. The measuring rod has an observation reference line arranged corresponding to the measurement range of the length scale line.

[0013] Make the abutting end of the measuring rod abut against the inner wall of the channel-type masonry;

[0014] When the observation reference line on the measuring rod shifts away from the zero mark of the length scale line in a direction away from the center of the channel-type masonry, the actual radius of the inner cavity is greater than the designed radius of the inner cavity. By reading the corresponding reading on the length scale line of the observation reference line on the measuring rod, the difference between the actual radius of the inner cavity and the designed radius of the inner cavity at that measurement point can be obtained.

[0015] When the observation reference line on the measuring rod shifts towards the center of the channel-type masonry relative to the zero mark of the length scale, the actual radius of the inner cavity is smaller than the designed radius of the inner cavity. By reading the corresponding reading on the length scale line of the observation reference line on the measuring rod, the difference between the actual radius of the inner cavity and the designed radius of the inner cavity at that measurement point can be obtained.

[0016] When the observation reference line on the measuring rod coincides with the zero mark, the actual radius of the inner cavity is equal to the designed radius of the inner cavity;

[0017] Rotate the mounting base around the axis L1 of the channel-type masonry to obtain the difference between the actual radius and the designed radius of the inner cavity at different measurement points along the circumference of the channel-type masonry.

[0018] Furthermore, in step S1, the rotation center of the mounting base is aligned with the axis L1 of the channel masonry by using a laser line projector.

[0019] Furthermore, the elasticity measuring mechanism is provided in two sets, and the two sets of elasticity measuring mechanisms are symmetrical about the axis L of the channel masonry.

[0020] Furthermore, it also includes an operating panel mounted on the support base, the upper surface of which is horizontally arranged;

[0021] The mounting base is rotatably mounted on one end of the control panel.

[0022] Furthermore, it also includes a multi-stage rod arranged coaxially with the channel-type masonry; one end of the multi-stage rod is connected to the operating plate, and the other end of the multi-stage rod is rotatably connected to the mounting base via a rotating shaft.

[0023] Furthermore, the support base is a tripod.

[0024] Furthermore, a transparent cover is installed at the observation window, and the length scale line is set on the transparent cover.

[0025] Furthermore, the observation reference line is set at the drive end of the measuring rod.

[0026] Furthermore, it also includes a counterweight, which is connected to the control panel by a rope and is located at the end of the control panel away from the mounting base.

[0027] Compared with existing technologies, the beneficial effects of this invention are: This invention provides a method for surveying the inner wall of a passageway-type masonry structure, which facilitates the accurate drawing of the inner wall graphics. Based on the measurement results, the inner wall of completed sections of the passageway-type masonry structure that do not meet design requirements can be rectified. When the quality deviation of a completed section of the passageway-type masonry structure is too large, the elevation of the support frame and arch support frame in the next section should be adjusted to ensure the construction quality of the next section of the passageway-type masonry structure. This facilitates the graphic drawing and quality control of each horizontal section of the passageway-type masonry structure. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the measuring device and laser line projector used in conjunction in this invention;

[0029] Figure 2 This is a schematic diagram of the measuring device in this invention from another angle during use;

[0030] Figure 3 yes Figure 1 Enlarged view of part A in the image;

[0031] Figure 4 This is a schematic diagram of the elasticity measuring mechanism in this invention;

[0032] Reference numerals: 1-Support base; 2-Mounting base; 201-First mounting chamber; 202-Second mounting chamber; 203-Observation window; 204-Length scale line; 205-First through hole; 206-Second through hole; 3-First elastic element; 4-Second elastic element; 5-Measuring rod; 501-First limiting element; 502-Second limiting element; 6-Operating panel; 7-Rotating shaft; 8-Multi-stage rod; 9-Counterweight; 10-Rope; 11-Channel-type masonry; 12-Laser line projector; 13-Arch frame; 14-Support frame. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] The surveying method for the inner wall of a passageway-type masonry structure includes the following steps:

[0035] S1. Based on the measurement results of the inner cavity of the completed section of the channel-type masonry, determine the relationship between the actual radius and the designed radius of the inner cavity of the completed section of the channel-type masonry at the measurement point.

[0036] S2. Based on the measurement results at the measurement point, draw the inner wall diagram of the completed section of the tunnel-type masonry and record the deviation data between the actual radius of the inner cavity and the designed radius of the inner cavity of the completed section of the tunnel-type masonry.

[0037] The inner walls of completed sections of the passageway masonry that do not meet design requirements shall be rectified. When the quality deviation of a completed section of the passageway masonry is too large, the elevation of the support frame 14 and the arch support frame 13 shall be adjusted in the next section to ensure the construction quality of the next section of the passageway masonry.

[0038] In step S1, a measuring tape can be used to measure the inner cavity of the completed section of the tunnel-type masonry, but this method suffers from inaccurate measurement results and low efficiency. To address these technical problems, preferably, in step S1, a measuring device is used to measure the inner cavity of the completed section of the tunnel-type masonry. The measuring device includes a support base 1 and a mounting base 2 rotatably mounted on the support base 1. The rotation center of the mounting base 2 coincides with the axis L1 of the tunnel-type masonry 11. It also includes an elastic measuring mechanism, which includes a first elastic element 3 and a measuring rod 5. The axial direction of the measuring rod 5 is parallel to the radial direction of the tunnel-type masonry 11. One end of the measuring rod 5 is a driving end, and the other end is a supporting end. A first mounting chamber 201 is provided inside the mounting base 2. The driving end of the measuring rod 5 passes into the first mounting chamber 201, and the supporting end of the measuring rod 5 is located outside the mounting base 2. The measuring rod 5 is slidably engaged with the mounting base 2; the driving end of the measuring rod 5 is provided with a first limiting member 501, and the first elastic member 3 is disposed in the first mounting chamber 201 and located between the side of the first limiting member 501 away from the measuring rod 5 and the inner wall of the first mounting chamber 201, so that the measuring rod 5 makes linear reciprocating motion along the radial direction of the channel masonry 11; the mounting base 2 is provided with an observation window 203 connected to the first mounting chamber 201, and the observation window 203 is provided with a length scale line 204 arranged radially along the channel masonry 11; the measuring rod 5 is provided with an observation reference line arranged corresponding to the measurement range of the length scale line 204; so that the abutting end of the measuring rod 5 abuts against the inner wall of the channel masonry 11.

[0039] Specifically, the laser line projector 12 is used to align the rotation center of the mounting base 2 with the axis L1 of the channel-type masonry 11. The laser line projector 12 can also monitor the mortar joint lines of the channel-type masonry 11 in real time. The laser line projector 12 is an instrument in the prior art.

[0040] When the observation reference line on measuring rod 5 shifts away from the center of the passageway masonry 11 relative to the zero mark of the length scale 204, the actual radius of the inner cavity is greater than the designed radius. The difference between the actual and designed radius of the inner cavity at that measurement point is obtained by comparing the observation reference line on measuring rod 5 with the corresponding reading on the length scale 204. When the observation reference line on measuring rod 5 shifts closer to the center of the passageway masonry 11 relative to the zero mark of the length scale 204, the actual radius of the inner cavity is less than the designed radius. The difference between the actual and designed radius of the inner cavity at that measurement point is obtained by comparing the observation reference line on measuring rod 5 with the corresponding reading on the length scale 204. When the observation reference line on measuring rod 5 coincides with the zero mark, the actual radius of the inner cavity is equal to the designed radius.

[0041] Rotate the mounting base 2 around the axis L1 of the channel-type masonry 11 to obtain the difference between the actual radius of the inner cavity and the design radius of the inner cavity at different measurement points along the circumference of the channel-type masonry 11, and reflect the data on the drawings.

[0042] In a preferred embodiment, the elastic measuring mechanism further includes a second elastic element 4; a second mounting chamber 202 is provided within the mounting base 2, and the first mounting chamber 201 and the second mounting chamber 202 are arranged sequentially along direction a from the center of the channel masonry 11 to the inner wall of the channel masonry 11; the measuring rod 5 is installed through the second mounting chamber 202, and a second limiting element 502 located within the second mounting chamber 202 is provided on the measuring rod 5; the second elastic element 4 is disposed between the side of the second limiting element 502 near the center of the channel masonry 11 and the inner wall of the second mounting chamber 202. The second mounting chamber 202 provides mounting space for the second elastic element 4, and by providing the second elastic element 4, it further provides elastic support for the measuring rod 5. Specifically, the mounting base 2 is provided with a first through hole 205 and a second through hole 206 arranged coaxially. The first mounting chamber 201 and the second mounting chamber 202 are connected through the second through hole 206. The first through hole 205 is located at the end of the second mounting chamber 202 away from the first mounting chamber 201. The measuring rod 5 passes through the first through hole 205, the second mounting chamber 202, and the second through hole 206, and extends into the first mounting chamber 201. When the observation reference line on the measuring rod 5 shifts relative to the zero mark of the length scale line 204 towards the center of the channel-type masonry 11, the second limiting member 502 compresses the second elastic member 4; when the observation reference line on the measuring rod 5 shifts relative to the zero mark of the length scale line 204 away from the center of the channel-type masonry 11, the second elastic member 4 extends and returns to its original position.

[0043] In a preferred embodiment, the elastic measuring mechanism is provided in two sets, with the two sets of elastic measuring mechanisms having an axis of symmetry about the axis L of the channel-type masonry 11, forming an axially symmetrical structure. By setting two sets of symmetrically arranged elastic measuring mechanisms, the difference between the actual radius and the designed radius of the inner cavity at two symmetrical measurement points with the axis L of the channel-type masonry 11 as the axis of symmetry can be measured simultaneously, thereby improving work efficiency.

[0044] To facilitate data recording and plotting by staff, the system preferably includes an operation panel 6 mounted on the support base 1, with the upper surface of the operation panel 6 arranged horizontally; the mounting base 2 is rotatably mounted on one end of the operation panel 6. The upper surface of the operation panel 6 serves as the work surface for the staff.

[0045] After adjusting the rotation center of the mounting base 2 to coincide with the axis L1 of the channel masonry 11, if it is necessary to measure the radius of other sections perpendicular to the axis L1 of the channel masonry 11, the support base 1 needs to be moved along the axis L1 of the channel masonry 11. After moving, the rotation center of the mounting base 2 needs to be adjusted to coincide with the axis L1 of the channel masonry 11 again, which is inconvenient to operate. As a preferred embodiment, it also includes a multi-stage rod 8 arranged coaxially with the channel masonry 11; one end of the multi-stage rod 8 is connected to the operating plate 6, and the other end of the multi-stage rod 8 is rotatably connected to the mounting base 2 through a rotating shaft 7. By connecting the multi-stage rod 8 between the mounting base 2 and the operating plate 6, the position of the mounting base 2 along the axis L1 of the channel masonry 11 can be adjusted, thereby measuring the radius of other sections perpendicular to the axis L1 of the channel masonry 11, which is convenient and efficient to operate.

[0046] In a preferred embodiment, the support base 1 is a tripod. Tripods are existing technology, providing not only stable support but also height adjustment. Specifically, the operating plate 6 is connected to the connector at the upper end of the tripod via bolts.

[0047] In a preferred embodiment, a transparent cover is installed at the observation window 203, and the length scale line 204 is disposed on the transparent cover. The transparent cover can be made of plastic, glass, etc.

[0048] In a preferred embodiment, the observation reference line is set at the drive end of the measuring rod 5.

[0049] To prevent the tripod from tipping over, preferably, a counterweight 9 is also included. The counterweight 9 is connected to the control plate 6 via a rope 10 and is located at the end of the control plate 6 away from the mounting base 2. The counterweight 9 is made of metal.

[0050] The first elastic element 3 and the second elastic element 4 can be rubber products. Preferably, the first elastic element 3 and the second elastic element 4 are both springs.

[0051] The first limiting member 501 and the second limiting member 502 can be either a limiting rod or a limiting plate. Preferably, both the first limiting member 501 and the second limiting member 502 are welded to the measuring rod 5.

[0052] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent changes made to the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A method for surveying the inner wall of a passageway-type masonry structure, characterized in that, Including the following steps: S1. Based on the measurement results of the inner cavity of the completed section of the channel-type masonry, determine the relationship between the actual radius of the inner cavity of the completed section of the channel-type masonry at the measurement point and the design radius of the inner cavity. S2. Based on the measurement results at the measurement point, draw the inner wall diagram of the completed section of the tunnel-type masonry and record the deviation data between the actual radius of the inner cavity and the designed radius of the inner cavity of the completed section of the tunnel-type masonry. In step S1, a measuring device is used to measure the inner cavity of the completed section of the channel-type masonry. The measuring device includes a support base (1) and a mounting base (2) rotatably mounted on the support base (1); the rotation center of the mounting base (2) coincides with the axis L1 of the channel masonry (11); It also includes an elastic measuring mechanism, which includes a first elastic element (3) and a measuring rod (5); The axial direction of the measuring rod (5) is parallel to the radial direction of the channel masonry (11). One end of the measuring rod (5) is the driving end, and the other end is the abutting end. A first mounting chamber (201) is provided in the mounting base (2). The driving end of the measuring rod (5) is inserted into the first mounting chamber (201), and the abutting end of the measuring rod (5) is located outside the mounting base (2). The measuring rod (5) is slidably engaged with the mounting base (2). A first limiting member (501) is provided at the driving end of the measuring rod (5). The first elastic member (3) is provided in the first mounting chamber (201) and is located between the side of the first limiting member (501) away from the measuring rod (5) and the inner wall of the first mounting chamber (201), so that the measuring rod (5) moves linearly back and forth along the radial direction of the channel masonry (11). The mounting base (2) is provided with an observation window (203) that communicates with the first mounting chamber (201). The observation window (203) is provided with a length scale line (204) arranged radially along the channel masonry (11). The measuring rod (5) is provided with an observation reference line arranged corresponding to the measurement range of the length scale line (204). Make the abutting end of the measuring rod (5) abut against the inner wall of the channel masonry (11); When the observation reference line on the measuring rod (5) shifts away from the zero mark of the length scale line (204) away from the center of the channel masonry (11), the actual radius of the inner cavity is greater than the designed radius of the inner cavity. By reading the observation reference line on the measuring rod (5) and comparing it with the corresponding reading on the length scale line (204), the difference between the actual radius of the inner cavity and the designed radius of the inner cavity at the measurement point can be obtained. When the observation reference line on the measuring rod (5) shifts towards the center of the channel-type masonry (11) relative to the zero mark of the length scale line (204), the actual radius of the inner cavity is smaller than the designed radius of the inner cavity; by reading the observation reference line on the measuring rod (5) and comparing it with the corresponding reading on the length scale line (204), the difference between the actual radius of the inner cavity and the designed radius of the inner cavity at this measurement point can be obtained; When the observation reference line on the measuring rod (5) coincides with the zero mark, the actual radius of the inner cavity is equal to the designed radius of the inner cavity; Rotate the mounting base (2) around the axis L1 of the channel masonry (11) to obtain the difference between the actual radius of the inner cavity and the design radius of the inner cavity at different measurement points along the circumference of the channel masonry (11); It also includes an operation plate (6) mounted on the support base (1), the upper surface of the operation plate (6) being arranged horizontally; The mounting base (2) is rotatably mounted on one end of the operating plate (6); It also includes a multi-stage rod (8) arranged coaxially with the channel masonry (11); one end of the multi-stage rod (8) is connected to the operating plate (6), and the other end of the multi-stage rod (8) is rotatably connected to the mounting base (2) through a rotating shaft (7).

2. The surveying method for the inner wall of a passageway-type masonry structure as described in claim 1, characterized in that, In step S1, the rotation center of the mounting base (2) is made to coincide with the axis L1 of the channel masonry (11) by using a laser line projector (12).

3. The surveying method for the inner wall of a passageway-type masonry structure as described in claim 1, characterized in that, The elasticity measuring mechanism is provided in two sets, and the two sets of elasticity measuring mechanisms are symmetrical about the axis L1 of the channel masonry (11).

4. The surveying method for the inner wall of a passageway-type masonry structure as described in claim 1, characterized in that, The support base (1) is a tripod.

5. The surveying method for the inner wall of a passageway-type masonry structure as described in claim 1, characterized in that, A transparent cover is installed at the observation window (203), and the length scale line (204) is set on the transparent cover.

6. The surveying method for the inner wall of a passageway-type masonry structure as described in claim 1, characterized in that, The observation reference line is set at the drive end of the measuring rod (5).

7. The surveying method for the inner wall of a passageway-type masonry structure as described in claim 1, characterized in that, It also includes a counterweight (9), which is connected to the control plate (6) by a rope (10) and is located at the end of the control plate (6) away from the mounting base (2).

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