Large-span roof plate reinforcing construction process

Abstract

The invention relates to the field of large-span shell repairing, in particular to a large-span roof plate reinforcing construction technology which comprises the following steps that S1, a plurality of column feet are installed, platforms are installed on the tops of the column feet, and a plurality of platforms with different heights are formed; s2, the centers of the base and the sticky plate are fixed, and the base needs to be located at the center of a main beam or a secondary beam of the vault; s3, the sticky plate is installed at the sticky plate center of the bottom of the vault; s4, the supporting rod is conveyed to the installation position to be pre-installed, the supporting rod is installed in an outer sleeve at the top of the base, then a jacking mechanism is installed between the base and the supporting rod, and a sticky plate is connected with the supporting rod; and S5, jacking is divided into a plurality of times, the sequence of jacking the platforms is determined according to the heights of the platforms, the platform with the higher height is jacked for the first time, the platform with the medium height is jacked for the second time, the platform with the lower height is jacked finally, and jacking of each time is divided into a plurality of stages. According to the invention, the jacking force to the vault can be accurately controlled.

Description

Technical Field

[0001] The present application relates to the field of large-span shell repair, and in particular to a large-span roof slab reinforcement construction process. Background Art

[0002] Cultural relics protection sites are a general term for immovable cultural relics that are determined to be protected in China, and key protection areas are implemented for the cultural relics protection sites and a certain range of surrounding areas. Cultural relics protection sites refer to units established at the locations of ancient cultural sites, ancient tombs, ancient buildings, cave temples and stone carvings with historical, artistic and scientific value for the purpose of cultural relics protection.

[0003] Since some ancient buildings have existed for a long time, they are damaged to a certain extent and need to be repaired. Some buildings have a cover on top. The safe service life of the cover has expired and there is a possibility of collapse. Therefore, the cover needs to be lifted before repair. In the prior art, there is a structure for lifting the flat cover of the building.

[0004] With respect to the above-mentioned related technologies, the inventors believe that since the upper covers of some building bodies are large-span reinforced concrete thin-shell vaults, the special shape of the vault of the arch structure makes the external force better than the internal force, and it is easy for the internal part of the vault to pass through when lifting. Therefore, the force control needs to be very precise, and the plane lifting structure cannot accurately control the lifting force, which makes it easy for the vault to break when lifting the vault. Summary of the invention

[0005] In order to facilitate the control of the lifting force of the vault, the present application provides a large-span roof slab reinforcement construction process.

[0006] This application provides a large-span roof slab reinforcement construction process, using the following technical solutions: The large-span roof slab reinforcement construction process includes the following steps: S1: Install several column bases of different heights on the building surface below the vault, with the height of the column bases increasing along the center direction of the vault, and install platforms on the top of the column bases to form several platforms of different heights, and make drawings of the base layout on the platforms; S2: According to the base layout drawing, locate the center of the base and the adhesive plate. The base must fall on the center of the main beam or secondary beam of the arch; S3: Install the adhesive plate at the center of the adhesive plate at the bottom of the vault; S4: transport the support rod to the installation position for pre-installation, install the support rod in the outer sleeve on the top of the base, then install the jacking mechanism between the base and the support rod, and connect the adhesive plate to the support rod; S5: According to the platforms at different heights, the lifting is divided into several times. The order of lifting the platforms is determined by the height of the platforms. The higher platforms are lifted first, followed by the medium-height platforms, and finally the lower platforms. Each lifting is divided into several stages. The lifting distance in each stage is the same, and each stage needs to be lifted simultaneously. After the same platform completes each stage of lifting, it will proceed to the next stage of lifting.

[0007] By adopting the above technical solution, because the curvature of the arch at the top of the platform with a higher height tends to be flatter and the range of jacking force that can be tolerated is larger, when the jacking adjustment of the platform with a medium height is subsequently performed, the change value of the jacking provided by the platform with a higher height is not so large compared with the range of jacking force that it can withstand, and it is not easy to exceed the range of jacking force that the platform can withstand. Therefore, this solution accurately controls the jacking force and is not likely to break the arch during jacking.

[0008] Optionally, in S2, after the centers of the base and the adhesive plate are fixed, the center point of the base is marked and numbered according to the drawing, the center of the adhesive plate of the arch is marked, and a circle is drawn with the mark as the center. While marking the fixed point, the vertical distance between the center point of the base and the center point of the adhesive plate is measured and registered together with the base number.

[0009] By adopting the above technical solution, the positions of the base and the center of the adhesive plate can be aligned to facilitate the subsequent installation of the support rod. Marking the center of the circle can facilitate subsequent processing of the center of the adhesive plate. Measuring the vertical distance between the center point of the base and the center point of the adhesive plate can facilitate the preparation of subsequent support rods.

[0010] Optionally, S3 includes the following steps: S3.1: Use tools to clean the mortar layer within the marked circle manually; S3.2: Use a grinding pad to clean the concrete surface where the mortar layer has been cleaned and scrub it clean; S3.3: Use the customized glue plate template, with the original marked base center as the main point, to locate the glue plate center and the direction of the hinge, then mark it and ensure that the direction of the hinge is perpendicular to the center of the vault; S3.4: The four temporary fixing ears of the adhesive plate are temporarily fixed to the bottom of the vault with adhesive. After the adhesive solidifies, the temporary fixation is removed and the adhesive plate is then pasted to the center of the adhesive plate at the bottom of the vault.

[0011] By adopting the above technical solution, the concrete structure of the vault has reached its service life. In order to avoid damage to the vault structure caused by vibration of electric tools, this construction stage can only be completed manually; the provision of temporary fixing ears facilitates temporary fixation of the adhesive plate.

[0012] Optionally, in S5, the specific lifting step is: after the upper adhesive plate is completely contacted and fixed with the arch, the height of the bottom end of the spring is adjusted by the positioning assembly, and the spring is compressed. The upper end of the spring is stationary due to its connection with the support rod. When the spring is compressed to a predetermined length, the size of the lifting force can be known by observing the upward distance of the lower end of the spring.

[0013] By adopting the above technical solution, the height of the bottom end of the spring can be adjusted, and by observing the upward movement distance of the bottom end of the spring, the size of the lifting force can be known, so as to accurately control the size of the lifting force.

[0014] Optionally, in S1, before installing the column base, a lower support structure is installed on the building surface of the layer below the arch near the wall, and a wall-attached support structure is installed on the building surface below the arch near the wall, and the wall-attached support structure is located directly above the lower support structure. When installing the platform, the bottom of the platform is connected to the top of the wall-attached support structure.

[0015] By adopting the above technical solution, the platform can transfer part of the load it receives to the wall-attached rods, and then transfer it to the bottom beams and the lower supporting structure through the wall-attached rods, so as to improve the overall stability and bearing capacity of the platform.

[0016] Optionally, in S1, after the lower support structure is installed, first reinforcing diagonal bars are installed on both sides of the lower support structure, and second reinforcing diagonal bars are installed on both ends of the lower support structure.

[0017] By adopting the above technical solution, the first reinforcing diagonal rod and the second reinforcing diagonal rod can further improve the stability of the lower support structure.

[0018] Optionally, in S1, before installing the wall-mounted supporting structure, a lug plate is installed on the wall according to the installation position of the lower supporting structure, and then the lug plate and the wall-mounted supporting structure are connected.

[0019] By adopting the above technical solution, the ear plate can connect the wall surface and the wall-attached supporting structure to improve the stability of the wall-attached supporting structure.

[0020] Optionally, in S1, when installing the lower support structure, ensure that the top of the lower support structure is used to support the beam on the top surface of the next floor of the vault, and determine the position of the wall-attached support structure accordingly.

[0021] By adopting the above technical solution, the load borne by the wall-attached support structure can be transferred to the crossbeam with a relatively stable structure, thereby increasing the load that the wall-attached support structure can withstand.

[0022] Optionally, in S4, the support poles are cut according to the measurement data of each base number during positioning, and φ60*4 tubes are used for those below 2.5 meters and φ83*4 tubes are used for those above 2.5 meters.

[0023] By adopting the above technical solution, when the distance between the base and the center of the adhesive plate is far, a support rod with a larger diameter is used to improve the stability of the support.

[0024] Optionally, in S3.4, the bonding glue is AB glue and nano glue.

[0025] By adopting the above technical solution, AB glue and nano glue can temporarily fix the adhesive plate and also have the effect of facilitating disassembly.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The curvature of the arch on the top of a platform with a higher height tends to be gentle, and the range of the lifting force it can withstand is larger. When the platform with a medium height is subsequently adjusted for lifting, the change in the lifting value provided by the platform with a higher height is not so large compared with the range of the lifting force it can withstand, and it is not easy to exceed the range of the lifting force that the platform can withstand; 2. The height of the bottom of the spring can be adjusted, and the distance the bottom of the spring moves upward can be observed to know the size of the lifting force, so as to accurately control the size of the lifting force; 3. The platform can transfer part of the load to the wall-attached rods, and then transfer it to the bottom beams and the lower supporting structure through the wall-attached rods to improve the overall stability and bearing capacity of the platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of this application; Figure 2 is a schematic diagram of the column foot and platform of the present application; Figure 3 is a side cross-sectional view of the lower support structure and the wall-attached support structure of the present application; Figure 4 is a front cross-sectional view of the lower support structure and the wall-attached support structure of the present application; Figure 5 This application Figure 3 A partial enlarged schematic diagram of part A; Figure 6 This application Figure 3 A partial enlarged schematic diagram of part B in the middle; Figure 7 is a schematic diagram of the jacking mechanism and the support rod of the present application; Figure 8 It is a schematic diagram of the jacking mechanism of the present application.

[0028] Explanation of the reference numerals in the accompanying drawings: 1. arch; 2. supporting base frame; 3. supporting vertical rod; 4. supporting horizontal rod; 5. supporting longitudinal rod; 6. supporting seat; 7. first reinforcing diagonal rod; 8. second reinforcing diagonal rod; 9. embedded plate; 10. ear plate; 11. wall-attached screw; 12. wall-attached nut; 13. I-beam; 14. wall-attached rod; 15. column foot; 16. platform; 17. adhesive plate; 18. base; 19. outer sleeve; 20. hinged seat; 21. anti-slip pad; 22. positioning assembly; 23. spring; 24. connecting plate; 25. positioning screw; 26. limiting rod; 27. positioning nut; 28. lower nut; 29. ​​upper nut; 30. limiting groove; 31. scale line; 32. sliding block; 33. support rod; 34. customized screw; 35. customized nut. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1 to 8 This application is described in further detail.

[0030] The present application embodiment discloses a large-span roof slab reinforcement construction process. Figure 1 and Figure 2 The large-span roof slab reinforcement construction process includes the following steps: S1: In the early stage, the building to be restored was surveyed and studied, and the survey conclusion was reached that there was a great safety hazard in vault 1. First, emergency reinforcement was carried out on vault 1, and then comprehensive repairs were carried out on this basis to maintain the safety of the cultural relic structure. Considering the high height of vault 1, emergency reinforcement adopted the method of temporary high support of steel structure to temporarily support vault 1. It was a temporary emergency reinforcement measure taken in the early stage of the repair project to deal with the structural hazards of vault 1. At the same time, it can also provide the necessary working surface for the next step of repair work to facilitate further investigation and construction. During the construction and use of the temporary high support, while ensuring its structural safety and stability, it should be noted that reversible and flexible contact methods should be used in places where it contacts the surface of the cultural relics to avoid damage to the cultural relics themselves.

[0031] Reference Figure 3 and Figure 4, install the lower support structure on the building surface of the layer below the vault 1 near the wall. It should be noted that the lower support structure includes a support base frame 2, a support vertical bar 3, a support cross bar 4 and a support longitudinal bar 5. Before installing the lower support structure, the location of installing the lower support structure is determined according to the preliminary survey to ensure that the top of the lower support structure is used to support the cross beam on the top surface of the layer below the vault 1. The specific installation process of the lower support structure is as follows: install the support base frame 2 on the building surface of the layer below the vault 1 near the wall, and ensure that the support base frame 2 falls directly below the cross beam on the top surface of the layer below the vault 1, weld a number of support vertical bars 3 to the top of the support base frame 2, and then connect a number of support cross bars 4 and support longitudinal bars 5 to the support vertical bars 3 through the first connecting piece, and install a support seat 6 on the top of the support vertical bars 3, so that the top of the support seat 6 is used to support the cross beam and the roof slab around the cross beam.

[0032] After the lower support structure is installed, the first reinforcing diagonal rods 7 are installed on both sides of the lower support structure, and the second reinforcing diagonal rods 8 are installed on both ends of the lower support structure, so that the first reinforcing diagonal rods 7 are connected to the supporting crossbars 4 through the first connecting members, and the second reinforcing diagonal rods 8 are connected to the supporting longitudinal rods 5 through the first connecting members. It should be noted that the first connecting member can be a wire, a rope or a clamp.

[0033] Reference Figure 5 and Figure 6 According to the installation position of the lower support structure, the embedded plate 9 and the ear plate 10 are installed on the wall at the bottom of the arch 1. The wall attachment node is determined first, and then the wall attachment screw 11 is embedded in the corresponding position of the wall. The embedded plate 9 is installed at the corresponding position, and one end of the wall attachment screw 11 passes through the embedded plate 9. The embedded plate 9 and the wall are connected by threading the wall attachment nut 12 on the wall attachment screw 11, and the two ear plates 10 are welded to the same side of the embedded plate 9. The wall attachment support structure is installed on the building surface below the arch 1 near the wall. The lower support structure and the wall attachment support structure are separated by one floor, and the wall attachment support structure is located directly above the lower support structure. The wall-attached support structure includes an I-beam 13 and a wall-attached rod 14. The specific installation process of the wall-attached support structure is as follows: determine the installation position of the I-beam 13 according to the position of the support seat 6 and the ear plate 10, so that the I-beam 13 is located directly above the support seat 6, and the wall-attached rod 14 is welded to the top of the I-beam 13, and then the ear plate 10 and the wall-attached rod 14 are welded.

[0034] Reference Figure 2 and Figure 3, a plurality of column feet 15 of different heights are installed on the building surface below the vault 1, the height of the column feet 15 increases along the center direction of the vault 1, and a platform 16 is installed on the top of the column feet 15 to form a plurality of platforms 16 of different heights, and a layout drawing of the base 18 on the platform 16 is prepared. It should be noted that when installing the platform 16, the bottom of the platform 16 and the top of the wall-attached rod 14 are connected by bolts, so that the platform 16 can transfer part of the load to the wall-attached rod 14, and then transfer it to the bottom crossbeam and the lower support structure through the wall-attached rod 14, so as to improve the overall stability and bearing capacity of the platform 16.

[0035] S2: According to the base 18 layout drawing, use infrared to locate the base 18 and the center of the adhesive plate 17. The base 18 must fall on the center of the main beam or secondary beam of the arch 1. After locating the base 18 and the adhesive plate 17, mark the center of the base 18 and number it according to the drawing, mark the center of the adhesive plate 17 of the arch 1, and draw a circle with a diameter of 20 cm with the mark as the center. While marking the fixed point, use an infrared rangefinder to measure the vertical distance between the center of the base 18 and the center of the adhesive plate 17, and register it together with the base 18 number.

[0036] S3: Install the adhesive plate 17 at the center of the adhesive plate 17 at the bottom of the arch 1. This step is divided into four stages: S3.1: Manually use a sharp shovel to clean the mortar layer in the marked circle, leaving the concrete surface. During the cleaning process, strengthen construction monitoring and take effective measures to ensure construction safety in order to ensure stable progress. It should be noted that because the concrete structure of the dome 1 has reached its service life, in order to avoid damage to the dome structure caused by the vibration of power tools, this construction stage can only be completed manually.

[0037] S3.2: Use a grinding sheet to clean the concrete surface at the location where the mortar layer has been cleaned, and scrub it clean with acetone. It should be noted that clean water should not be used. In this embodiment, the grinding sheet is a wire grinding sheet.

[0038] S3.3: Using the customized adhesive plate 17 template, with the originally marked center of the base 18 as the main focus, use infrared rays to locate the center of the adhesive plate 17 and the direction of the hinge, then mark it and ensure that the direction of the hinge is perpendicular to the center of the arch 1.

[0039] S3.4: The four temporary fixing ears of the sticky plate 17 are temporarily fixed to the bottom of the arch 1 with adhesive. After the adhesive solidifies, the temporary fixation is removed, and then the sticky plate 17 is adhered to the center of the sticky plate 17 at the bottom of the arch 1 by adhesive steel glue. In this embodiment, in order to ensure the firmness of the adhesion, the adhesive steel glue adopts the Huiyu brand imported from Germany. In this embodiment, the adhesive glue is AB glue and nano glue. AB glue and nano glue can temporarily fix the sticky plate 17 and also have the effect of facilitating disassembly. It should be noted that after the installation of the sticky plate 17 is completed, it is necessary to wait for 24 hours before proceeding to the subsequent steps to ensure the firmness of the adhesion of the sticky plate 17.

[0040] S4: Reference Figure 7 and Figure 8 , according to the measurement data of each base 18 number during positioning, the strut 33 is cut, φ60*4 tube is used for less than 2.5 meters, and φ83*4 tube is used for more than 2.5 meters, the strut 33 is hoisted to the installation position for pre-installation, so that the strut 33 is installed in the outer sleeve 19 at the top of the base 18, and then the jacking mechanism is installed between the base 18 and the strut 33, and the adhesive plate 17 is connected to the strut 33. The top of the strut 33 is hollow, and the top of the strut 33 is slidably connected with a custom screw 34, and the top of the strut 33 is rotatably connected with a custom nut 35, and the custom nut 35 is threadedly sleeved on the outside of the custom screw 34. The top of the custom screw 34 is hinged with an articulated seat 20 by bolts, and the top of the articulated seat 20 is fixed with an anti-skid pad 21, and the adhesive plate 17 is fixed to the top of the anti-skid pad 21. When the distance between the center of the base 18 and the adhesive plate 17 is far, a strut 33 with a larger diameter is used to improve the stability of the support.

[0041] By rotating the custom nut 35, the height of the custom screw 34 in the support rod 33 can be adjusted, so that the height of the adhesive plate 17 can be adjusted. In addition, the custom screw 34 is hinged to the hinge seat 20, and the angle of the adhesive plate 17 can be easily adjusted to facilitate the adhesive plate 17 to adapt to the connection of the arch 1 in different positions.

[0042] It should be noted that an outer sleeve 19 is welded to the top of the base 18, and the lifting mechanism includes a positioning assembly 22 and a spring 23. The positioning assembly 22 is installed between the base 18 and the outer sleeve 19, and the spring 23 is installed on the positioning assembly 22. The positioning assembly 22 is used to adjust the bottom end height of the spring 23, and the top end of the spring 23 is connected to the bottom of the support rod 33.

[0043] S5: According to the model calculation, the lifting is divided into 3 times: the first time, the 19.2-meter platform 16 and the 18.4-meter platform 16 are lifted at the same time, the second time, the 15.6-meter platform 16 and the 12.6-meter platform 16 are lifted at the same time, and the third time, the 9.8-meter platform 16 is lifted. Each lifting is divided into 3 stages, each stage is 20mm, and each stage needs to be lifted synchronously at the same time. After all the supports have completed the 20mm lifting, the next stage of 20mm lifting will be carried out. It should be noted that the lifting distance of each stage can be adaptively adjusted according to the actual situation.

[0044] It should be noted that the positioning assembly 22 includes a connecting plate 24, a plurality of positioning screws 25, a limiting rod 26 and a positioning nut 27. The connecting plate 24 is horizontally fixed to the outside of the outer sleeve 19. The plurality of positioning screws 25 are installed between the base 18 and the connecting plate 24. In the present embodiment, the number of the positioning screws 25 is four. The outer side of the positioning screw 25 and located in the base 18 are threadedly connected with a lower nut 28. The outer side of the positioning screw 25 and located in the top of the connecting plate 24 are threadedly connected with an upper nut 29 to realize the installation of the positioning screw 25. The four positioning screws 25 are circumferentially arranged around the outer sleeve 19. The outer sleeve 19 A limiting groove 30 is provided on the outer side, and the limiting groove 30 is communicated with the inner part of the outer sleeve 19. The limiting rod 26 is slidably connected in the limiting groove 30, and a part of the limiting rod 26 is located inside the outer sleeve 19, and a part of it is located outside the outer sleeve 19. A scale line 31 is provided on the outer side of the outer sleeve 19 at the position corresponding to the limiting groove 30. The positioning nut 27 is threadedly connected to the outer side of the positioning screw 25, and a sliding block 32 is provided on the sliding sleeves on the outer sides of two adjacent positioning screws 25. In the present embodiment, there are two sliding blocks 32 in total, and the two sliding blocks 32 are arranged in alignment, and the sliding block 32 is located between the limiting rod 26 and the positioning nut 27.

[0045] The lifting mechanism has two different specifications of springs 23, and the stroke of the two springs 23 is 80mm. Spring 23 specification 1: middle diameter 59mm, diameter 11mm, number of turns 12 turns, stiffness 60N / mm, total stroke 80mm, compressed height 143mm, free height 223mm. Spring 23 specification 2: middle diameter 64mm, diameter 15mm, number of turns 16 turns, stiffness 120N / mm, total stroke 80mm, compressed height 205mm, free height 285mm. It should be noted that the specifications of the spring 23 can be adaptively adjusted according to specific circumstances.

[0046] Reference Figure 7 and Figure 8The specific lifting steps are as follows: in the initial state, the spring 23 is in a free state, and is only affected by the gravity of the upper support rod 33, which causes a certain compression of the spring 23. After the upper adhesive plate 17 is completely in contact with the arch 1, the upper end of the spring 23 is stationary due to the connection with the support rod 33. By screwing the four positioning nuts 27 upward, a jack can be used for assistance, so that the limit rod 26 is moved upward through the sliding block 32 to compress the spring 23. The limit rod 26 can move in the limit groove 30. At the same time, since the scale line 31 is located on one side of the limit groove 30, the scale line 31 can be used to measure the compressed length of the spring 23. The personnel can calculate the elastic coefficient k through the size of the spring 23, and can accurately calculate the force applied by the support rod 33 to the arch 1, that is, the size of the supporting force, so that it is not easy to break the arch 1 when lifting the arch 1.

[0047] Preferably, the elastic stiffness of the support is 60N / mm, and the maximum stroke is not less than 60mm; the adjustment accuracy of the support force is not less than 1kN, the size of the support force can be visually read, and can be manually adjusted without the aid of electric tools. The support can be used with conventional scaffolding and can be connected with bolts.

[0048] It should be noted that the reason why the platform 16 with a higher height is lifted first is that the curvature of the arch 1 on the top of the platform 16 with a higher height tends to be flat, and the range of the lifting force that can be borne is larger. When the platform 16 with a medium height is subsequently lifted, the change in the lifting value provided by the platform 16 with a higher height is not so large compared with the range of the lifting force that it can withstand, and it is not easy to exceed the range of the lifting force that the platform 16 can withstand. Similarly, this theory also applies to the adjustment of the medium-height platform 16 and the adjustment sequence of the height handover platform 16. Therefore, this solution can accurately control the lifting force, and it is not easy to break the arch 1 during lifting.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. The large-span roof slab reinforcement construction process is characterized by: The following steps are involved: S1: Install a plurality of column feet (15) of different heights on the building surface below the vault (1), wherein the height of the column feet (15) increases along the center direction of the vault (1), and install a platform (16) on the top of the column feet (15) to form a plurality of platforms (16) of different heights, and prepare a layout drawing of the base (18) on the platform (16); S2: According to the base (18) layout drawing, the base (18) and the adhesive plate (17) are positioned. The base (18) needs to fall on the center of the main beam or secondary beam of the arch (1); S3: Install the adhesive plate (17) at the center of the adhesive plate (17) at the bottom of the arch (1); S4: transport the support rod (33) to the installation position for pre-installation, install the support rod (33) in the outer sleeve (19) at the top of the base (18), then install the lifting mechanism between the base (18) and the support rod (33), and connect the adhesive plate (17) to the support rod (33); S5: According to the platforms (16) of different heights, the lifting is divided into several times. The order of lifting the platforms (16) is determined according to the heights of the platforms (16). The higher platforms (16) are lifted first, followed by the medium-height platforms (16), and finally the lower platforms (16). Each lifting is divided into several stages. The lifting distance of each stage is the same. Each stage needs to be lifted simultaneously. After the same platform (16) completes each stage of lifting, the next stage of lifting is carried out.

2. The large-span roof slab reinforcement construction process according to claim 1 is characterized in that: In S2, after the centers of the base (18) and the adhesive plate (17) are fixed, the center point of the base (18) is marked and numbered according to the drawing, the center of the adhesive plate (17) of the arch (1) is marked, and a circle is drawn with the mark as the center. While marking the fixed point, the vertical distance between the center point of the base (18) and the center point of the adhesive plate (17) is measured and registered together with the number of the base (18).

3. The large-span roof slab reinforcement construction process according to claim 1 is characterized in that: S3 includes the following steps: S3.1: Use tools to clean the mortar layer within the marked circle manually; S3.2: Use a grinding pad to clean the concrete surface where the mortar layer has been cleaned and scrub it clean; S3.3: Using the customized adhesive plate (17) template, with the original marked base (18) center as the main point, locate the adhesive plate (17) center and the direction of the twist position, then mark it and ensure that the twist position direction is perpendicular to the center of the arch (1); S3.4: The four temporary fixing ears of the adhesive plate (17) are temporarily fixed to the bottom of the arch (1) with adhesive. After the adhesive is solidified, the temporary fixing is removed, and then the adhesive plate (17) is pasted to the center of the adhesive plate (17) at the bottom of the arch (1).

4. The large-span roof slab reinforcement construction process according to claim 1 is characterized in that: In S5, the specific lifting step is: after the upper adhesive plate (17) is completely contacted and fixed with the arch (1), the height of the bottom end of the spring (23) is adjusted by the positioning assembly (22), and the spring (23) is compressed. The upper end of the spring (23) is stationary because it is connected to the support rod (33). When the spring (23) is compressed to a predetermined length, the magnitude of the lifting force can be known by observing the upward movement distance of the lower end of the spring (23).

5. The large-span roof slab reinforcement construction process according to claim 1 is characterized in that: In S1, before installing the column foot (15), a lower support structure is installed on the building surface of the lower layer of the arch (1) near the wall, and a wall-attached support structure is installed on the building surface below the arch (1) near the wall, and the wall-attached support structure is located directly above the lower support structure. When installing the platform (16), the bottom of the platform (16) is connected to the top of the wall-attached support structure.

6. The large-span roof slab reinforcement construction process according to claim 5 is characterized in that: In S1, after the lower support structure is installed, first reinforcing diagonal bars (7) are installed on both sides of the lower support structure, and second reinforcing diagonal bars (8) are installed on both ends of the lower support structure.

7. The large-span roof slab reinforcement construction process according to claim 5 is characterized in that: In S1, before installing the wall-mounted supporting structure, the ear plate (10) is installed on the wall surface according to the installation position of the lower supporting structure, and then the ear plate (10) and the wall-mounted supporting structure are connected.

8. The large-span roof slab reinforcement construction process according to claim 5 is characterized in that: In S1, when installing the lower support structure, ensure that the top of the lower support structure is used to support the beam on the top surface of the next floor of the vault (1), and determine the position of the wall support structure accordingly.

9. The large-span roof slab reinforcement construction process according to claim 1 is characterized in that: In S4, the support rods (33) are cut according to the measurement data of the number of each base (18) during positioning, and φ60*4 tubes are used for those below 2.5 meters and φ83*4 tubes are used for those above 2.5 meters.

10. The large-span roof slab reinforcement construction process according to claim 3 is characterized in that: In S3.4, the bonding glue is AB glue and nano glue.

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