Prefabricated UHPC cavity module concrete shear wall and construction method thereof

Abstract

This application discloses a prefabricated UHPC cavity modular concrete shear wall and its construction method, which includes I-shaped blocks, L-shaped blocks, and T-shaped blocks. Each of the I-shaped blocks, L-shaped blocks, and T-shaped blocks is provided with a partition plate for separating concrete. The I-shaped blocks, L-shaped blocks, and T-shaped blocks are horizontally connected to each other via slot plates. The prefabricated shear wall cavity of this application adopts staggered splicing of hollow holes, so that the cast-in-place and precast concrete can be tightly combined without shifting, and the cumbersomeness of the process is greatly reduced. At the same time, this combination of prefabrication and cast-in-place significantly enhances the integrity of the structure and the reliability of the connection area.

Description

Technical Field

[0001] The present application relates to the field of construction technology, and in particular to a prefabricated UHPC cavity module concrete shear wall and a construction method thereof. Background Art

[0002] Traditional composite steel plate shear wall structures are filled with concrete throughout their entire cross-section, resulting in high material consumption, poor seismic performance, ductility, and low strength. Furthermore, the limited spacing between shear walls limits their flexibility in layout and makes them unsuitable for the large spaces required by all public buildings.

[0003] Partially prefabricated cavity masonry concrete shear walls can be flexibly assembled on site, reducing construction difficulty and making up for the shortcomings of the traditional plan layout that is not flexible enough. Summary of the Invention

[0004] In order to improve the problem of inflexibility of traditional plan layout, the present application provides a prefabricated UHPC cavity module concrete shear wall and a construction method thereof.

[0005] The prefabricated UHPC cavity module concrete shear wall provided in this application adopts the following technical solution:

[0006] A prefabricated UHPC cavity module concrete shear wall includes I-shaped blocks, L-shaped blocks and T-shaped blocks. The I-shaped blocks, L-shaped blocks and T-shaped blocks are each provided with a partition plate for separating concrete. The I-shaped blocks, L-shaped blocks and T-shaped blocks are connected to each other in the horizontal direction by a slot plate.

[0007] Optionally, the I-shaped building blocks, L-shaped building blocks and T-shaped building blocks are each provided with a U-shaped slot on the top and a key slot adapted to the slot on the bottom, and the slot and the key slot are both the same length as the corresponding I-shaped building blocks, L-shaped building blocks or T-shaped building blocks.

[0008] The construction method of a prefabricated UHPC cavity module concrete shear wall provided in this application adopts the following technical solution:

[0009] A prefabricated UHPC cavity module concrete shear wall and a construction method thereof, comprising the following steps:

[0010] S1. Prefabricate molds in the factory, making straight-line, L-shaped, and T-shaped molds. Use ultra-high performance concrete (UHPC) for pouring. Cover the surface with a protective film and spray water regularly to keep the concrete surface moist. De-molding is possible after reaching a certain strength.

[0011] S2, transporting prefabricated concrete blocks to the construction site;

[0012] S3. Open semicircular slots on the front panel of the concrete block, symmetrically arranged up and down, left and right. The upper slot opens upwards, and the lower slot opens downwards. When the upper and lower blocks are spliced ​​together, a circular shape is formed to place the steel bars.

[0013] S4. During construction, the first batch of masonry needs to be mortared on the ground, and the "matched holes and staggered seams" splicing method should be adopted, that is, when splicing, the upper and lower skins should be aligned with the holes, and the U-shaped slots should be aligned with the protruding key slots below for splicing. If they do not meet the requirements, they can be cut and adjusted on site;

[0014] S5. Pass the transverse steel bars through the circular steel bar holes formed by splicing, seal the gaps with mortar, insert steel bars above the cavity, and tie and overlap them to form a steel bar skeleton;

[0015] S5: When reinforcing the shear wall, you can place the blocks on one side of the old shear wall, connect the blocks and the old shear wall with bolts, and then pour concrete into the cavity layer by layer.

[0016] S6. During the construction process, the expansion of the upper and lower blocks needs to be monitored in real time. If there is a positional offset between adjacent blocks, the upper and lower adjacent I-shaped blocks, L-shaped blocks or T-shaped blocks need to be pulled in time.

[0017] Optionally, in S6, a detection mechanism is used to detect the positional relationship between the upper and lower building blocks. The detection mechanism includes two brackets, an adsorption component, and an identification component for identifying whether the upper and lower building blocks are positionally offset. The adsorption component is used to achieve adsorption and fixation of the two brackets to the corresponding building blocks.

[0018] Optionally, the identification component includes an identification rope, a tension sensor, a winding portion for winding the identification rope, and a judgment portion for judging whether the identification rope is parallel to the corresponding building block. The two ends of the identification rope are respectively connected by the two winding portions, that is, the identification rope is in a vertical state in the initial state. The tension sensor is used to connect the identification rope located between the two winding portions, and the tension sensor is electrically connected to a buzzer.

[0019] Optionally, the judging unit includes a whiteboard slidably arranged on any one of the brackets, and a plurality of marking lines are displayed on the whiteboard. If the marking rope coincides with one of the marking lines, the marking rope is in a vertical state.

[0020] Optionally, the adsorption assembly includes two vacuum suction cups, a viewing portion for determining whether the corresponding building blocks of the vacuum suction cups are adsorbed and fixed, and an adjustment portion for adjusting the position of one end of the identification rope, and the two brackets are fixedly connected to the two vacuum suction cups respectively.

[0021] Optionally, the winding part includes a winding frame movably arranged on the bracket, a winding roller rotatably arranged on the winding frame, and a winding motor; the adjusting part includes a screw slidably arranged on the bracket, a threaded sleeve rotatably connected to the bracket, and a limiting block; the threaded rod has a peripheral wall provided with a limiting groove for sliding of the limiting block, both ends of the limiting groove are closed, the limiting block is slidably arranged in the limiting groove, the bracket is provided with a sliding hole for sliding of the screw, the limiting block is fixed in the sliding hole, and the end is fixedly connected to the winding frame.

[0022] Optionally, the viewing part includes a viewing motor, a viewing block fixedly connected to the output end of the viewing motor, a push rod elastically arranged on the viewing block, an electromagnet, a curing group and a softening group, the viewing block is provided with a through-hole for the identification rope to pass through, the bottom wall of the through-hole is provided with a curing hole, the push rod ejects the identification rope into the curing hole, the curing group injects glue into the curing hole, and the softening group injects a softener for softening the glue into the curing hole. After the viewing block is firmly connected to the identification rope, the viewing motor is controlled to wind the identification rope to detect whether the vacuum suction cup is firmly fixed to the building block.

[0023] Optionally, the viewing portion further includes a viewing frame adsorbed on the building block, a pin elastically arranged on the viewing frame, a ring, a pull rope and a sound piece fixedly connected to the tail end of the pin, the tip of the pin abuts against the side wall of the vacuum suction cup, the pull rope is fixed on the bracket and passes through the ring, the sound piece is fixedly connected to the tail end of the pull rope, and the sound piece is used to indicate whether the vacuum suction cup is separated from the corresponding building block.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The precast shear wall cavity is spliced ​​with staggered holes, ensuring a tight connection between cast-in-place and precast concrete without shifting, greatly reducing the complexity of the construction process. Furthermore, this combination of precast and cast-in-place significantly enhances the structural integrity and the reliability of the connection areas.

[0026] 2. In the initial state, the tension sensor is set to a fixed value, that is, the tension between the two blocks is constant. As soon as the I-shaped block or L-shaped block shifts, the tension on the marking rope changes. If the tension on the tension sensor is less than or greater than the set value, the buzzer will trigger an alarm, thereby alerting the construction personnel that the I-shaped block and the L-shaped block have shifted and need to be reinstalled. Of course, in this embodiment, if the tension of the tension sensor changes due to slight shaking between the blocks, this is within the allowable error range and will not trigger the buzzer to sound.

[0027] 3. When the vacuum suction cup is tested to see if it is firmly fixed, the electromagnet is powered off. Under the action of the spring, the ejection rod ejects the identification rope into the curing hole, and the glue in the curing tank is sprayed into the curing hole. The glue bonds the ejection rod and the identification rope to the curing hole, thereby achieving the fixing effect of the viewing block and the identification rope. The viewing motor is controlled to rotate the viewing block. The viewing block continuously applies pressure to the identification rope during rotation. At this time, the tension of the tension sensor continues to increase until it reaches the tension value applied to the identification rope after the adjacent blocks are separated. Before this, if the vacuum suction cup is separated from the corresponding block, the ejector pin is pushed by the elastic part to start working, and the pull rope drives the sound part to make a sound, alerting the construction personnel that the vacuum suction cup is not firmly fixed and needs to be re-adsorbed or replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0029] Figure 2 This is a schematic diagram of the overall structure of Example 2 of the present application;

[0030] Figure 3 yes Figure 2 A magnified schematic diagram of part A;

[0031] Figure 4 is a schematic diagram of a whiteboard and a marking rope according to the second embodiment of the present application;

[0032] Figure 5 It is a schematic diagram of the viewing portion of the second embodiment of the present application.

[0033] Figure numerals: 1. I-shaped building block; 2. L-shaped building block; 3. T-shaped building block; 4. Partition plate; 5. Slot plate; 6. Slot; 7. Keyway; 8. Bracket; 9. Identification rope; 10. Tension sensor; 11. Buzzer; 12. Whiteboard; 13. Vacuum suction cup; 14. Winding frame; 15. Winding roller; 16. Winding motor; 17. Screw; 18. Threaded sleeve; 19. Limiting block; 20. Limiting groove; 21. Slide hole; 22. Inspection motor; 23. Inspection block; 24. Ejection rod; 25. Electromagnet; 26. Curing group; 27. Softening group; 28. Curing hole; 29. ​​Inspection frame; 30. Ejector pin; 31. Moving block; 32. Moving groove; 33. Handle; 34. Spring; 35. Ring; 36. Pull rope; 37. Sounding part. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-5 This application is described in further detail.

[0035] Example 1

[0036] The present application embodiment discloses a prefabricated UHPC cavity module concrete shear wall. Figure 1 A prefabricated UHPC cavity module concrete shear wall includes a straight-line block 1, an L-shaped block 2 and a T-shaped block 3. The straight-line block 1, the L-shaped block 2 and the T-shaped block 3 are all provided with a partition plate 4 for separating concrete. The straight-line block 1, the L-shaped block 2 and the T-shaped block 3 are connected to each other in the horizontal direction through a slot 6 plate 5; the L-shaped block 2 has three independent cavities on the long side and one independent cavity on the short side, which are separated by a partition plate 4 respectively. The straight-line block 1 is cast by ultra-high performance concrete and has a hollow rectangular cross-section. It is composed of three blocks spliced ​​together on the left and right, and then several blocks are assembled into a wall formwork with staggered holes to ensure the integrity of the wall; the T-shaped block 3 has three independent cavities on the long side and two independent cavities on the short side, which are separated by a partition plate 4 respectively; slots are opened at the short side of each block and the partition plate, and are arranged symmetrically on the left and right, namely the steel bar slot 6.

[0037] The top of the I-shaped building block 1, L-shaped building block 2 and T-shaped building block 3 are all provided with a U-shaped slot 6, and the bottom is provided with a key slot 7 adapted to the slot 6. The slot 6 and the key slot 7 are the same length as the corresponding I-shaped building block 1 or L-shaped building block 2 or T-shaped building block 3. This embodiment uses the I-shaped building block 1 and the L-shaped building block 2 as examples. If the I-shaped building block 1 is installed above the L-shaped building block 2, the slot 6 is provided at the bottom of the I-shaped building block 1, and the key slot 7 is provided at the top of the L-shaped building block 2. When the I-shaped building block 1 is installed above the L-shaped building block 2, the installation of the I-shaped building block 1 and the L-shaped building block 2 can be completed under the mutual cooperation of the slot 6 and the key slot 7; in addition, the slot 6 plate 5 is provided with two concave and convex parts. Similarly, if the I-shaped building block 1 and the L-shaped building block 2 need to be installed in the horizontal direction, they are installed through the concave and convex parts of the slot 6 plate 5.

[0038] The embodiments of the present application have the following effects:

[0039] 1. Fast construction speed

[0040] This system combines partial prefabrication and assembly technology, using a combination of prefabrication and cast-in-place construction. Compared to fully cast-in-place steel-concrete shear wall structures, this significantly reduces the formwork and masonry workload, requiring only the cavity to be filled with cast-in-place concrete. This greatly simplifies the construction process and significantly shortens the construction period.

[0041] 2. Good structural integrity

[0042] The precast shear wall cavity is spliced ​​with staggered holes, which allows the cast-in-place and precast concrete to be tightly combined without shifting, and greatly reduces the complexity of the process. At the same time, this combination of prefabrication and cast-in-place significantly enhances the integrity of the structure and the reliability of the connection area.

[0043] 3. Cost savings

[0044] Due to the significant reduction in wet work, the cavity part can be directly used as the template for the cast-in-place part, thereby saving a lot of template and support costs. The steel bars can be directly inserted into the corresponding slots 6, avoiding the drilling step, and significantly improving cost-effectiveness.

[0045] 4. Wide applicability

[0046] Three shear wall shapes are available to suit different needs, including building location, structure, seismic requirements, spatial layout, and other factors. During the construction process, the appropriate wall form can be selected based on the overall actual situation to meet the needs of the building.

[0047] Example 2

[0048] The present application discloses a construction method for a prefabricated UHPC cavity module concrete shear wall. Figure 2-Figure 4 A construction method for prefabricated UHPC cavity module concrete shear wall includes the following steps:

[0049] S1. Prefabricate molds in the factory, making straight-line, L-shaped, and T-shaped molds. Use ultra-high performance concrete (UHPC) for pouring. Cover the surface with a protective film and spray water regularly to keep the concrete surface moist. De-molding is possible after reaching a certain strength.

[0050] S2, transporting prefabricated concrete blocks to the construction site;

[0051] S3, open semicircular slots 6 on the front panel of the concrete block and arrange them symmetrically up and down, left and right. The upper slot 6 opens upward and the lower opening opens downward. When the upper and lower blocks are spliced ​​together, a circular shape is formed to place steel bars.

[0052] S4. During construction, the first batch of masonry needs to be mortared on the ground, and the "matched holes and staggered seams" splicing method is adopted, that is, when splicing, the upper and lower skins are aligned with the holes, and the U-shaped slots 6 are aligned with the protruding key slots 7 below for splicing. If they do not meet the requirements, they can be cut and adjusted on site;

[0053] S5. Pass the transverse steel bars through the circular steel bar holes formed by splicing, seal the gaps with mortar, insert steel bars above the cavity, and tie and overlap them to form a steel bar skeleton;

[0054] S5: When reinforcing shear walls, you can place blocks on one side of the old shear wall, connect the blocks and the old shear wall with bolts, and then pour concrete into the cavity layer by layer.

[0055] S6. During the construction process, the expansion of the upper and lower blocks needs to be monitored in real time. If positional displacement occurs between adjacent blocks, the upper and lower adjacent I-shaped blocks 1, L-shaped blocks 2 or T-shaped blocks 3 need to be pulled in time.

[0056] In S6, a detection mechanism is used to detect the positional relationship between the upper and lower blocks. The detection mechanism includes two brackets 8, an adsorption component, and an identification component for identifying whether the upper and lower blocks are offset in position. The adsorption component is used to achieve the adsorption and fixation of the two brackets 8 to the corresponding blocks. In this embodiment, the I-shaped block 1 and the L-shaped block 2 are still used as examples. The two brackets 8 correspond to the I-shaped block 1 and the L-shaped block 2 respectively. The adsorption component is used to fix the two brackets 8 to the I-shaped block 1 and the L-shaped block 2 respectively. If the I-shaped block 1 and the L-shaped block 2 are offset in position due to improper operation or instability during installation during the pouring process, they are all identified by the identification component, thereby achieving the effect of real-time monitoring of the I-shaped block 1 and the L-shaped block 2 during the concrete pouring process.

[0057] The identification assembly includes an identification rope 9, a tension sensor 10, a winding portion for winding the identification rope 9, and a judgment portion for judging whether the identification rope 9 is parallel to the corresponding building block. The two ends of the identification rope 9 are connected by the two winding portions, that is, the identification rope 9 is in a vertical state in the initial state. The tension sensor 10 is used to connect the identification rope 9 located between the two winding portions. The tension sensor 10 is electrically connected to a buzzer 11. The tension sensor 10 and the buzzer 11 are controlled and connected by a PLC controller. In the initial state, the tension sensor 10 sets a fixed value, that is, the force between the two building blocks. The tension is a constant value. As long as the position of the I-shaped building block 1 or the L-shaped building block 2 is offset, the tension of the marking rope 9 caused by the I-shaped building block 1 and the L-shaped building block 2 changes. As long as the tension on the tension sensor 10 is less than or greater than the set value, the buzzer 11 will be triggered to sound an alarm, thereby warning the construction personnel that the I-shaped building block 1 and the L-shaped building block 2 are offset and need to be reinstalled. Of course, in this embodiment, if the tension of the tension sensor 10 changes due to slight shaking between the blocks, it is within the allowable error range and will not trigger the buzzer 11 to sound.

[0058] The judging part includes a whiteboard 12 slidably arranged on any one of the brackets 8, and a plurality of marking lines are displayed on the whiteboard 12. If the marking rope 9 coincides with one of the marking lines, it is in a vertical state. If the marking rope 9 is not flush with the vertical plane where the I-shaped building block 1 and the L-shaped building block 2 are located in the initial state, it is easy to cause problems in the subsequent monitoring of the tension, because the angle of the marking rope 9 changes, which will also cause the tension of the marking rope 9 to change. In this embodiment, the movement of the whiteboard 12 can be pushed by a manual or electric push rod, and the whiteboard 12 is always in a vertical state. The whiteboard 12 is in a parallel state with the surface where the I-shaped building block 1 and the L-shaped building block 2 are located, and multiple identification lines can be marked on the whiteboard 12. The fineness of the identification line is smaller than the fineness of the identification rope 9, ensuring the accuracy between the identification rope 9 and the identification line; when the identification rope 9 is installed, by moving the whiteboard 12 to a position abutting the identification rope 9, the length of the identification line on the whiteboard 12 is smaller than the length of the identification rope 9. By comparing the identification line with the identification rope 9, it can be determined whether the identification rope 9 is parallel to the plane where the I-shaped building block 1 and the L-shaped building block 2 are located.

[0059] The adsorption assembly includes two vacuum suction cups 13, a viewing portion for judging whether the corresponding building blocks of the vacuum suction cups 13 are adsorbed and fixed, and an adjustment portion for adjusting the position of one end of the identification rope 9. The two brackets 8 are fixedly connected to the two vacuum suction cups 13 respectively. The winding portion includes a winding frame 14 movably arranged on the bracket 8, a winding roller 15 rotatably arranged on the winding frame 14, and a winding motor 16. The two vacuum suction cups 13 are respectively adsorbed and fixed on the I-shaped building block 1 and the L-shaped building block 2. At this time, the winding motor 16 can be controlled to work, and the two winding rollers 15 start to wind the indicating rope until the identification rope 9 is in a straight state. Since during the installation process, the centers of the two winding rollers 15 are in the same plane, and the identification rope 9 is wound at the middle position of the winding roller 15, since the identification rope 9 will not be wound multiple times on the winding roller 15, it is ensured that the identification rope 9 will only deviate from the plane where the middle position of the winding roller 15 is located, and the identification rope 9 will not deviate from the plane where the middle position of the winding roller 15 is located.

[0060] The adjusting part includes a screw 17 slidably arranged on the bracket 8, a threaded sleeve 18 rotatably connected to the bracket 8, and a limiting block 19. The peripheral wall of the threaded rod is provided with a limiting groove 20 for the sliding of the limiting block 19. Both ends of the limiting groove 20 are closed. The limiting block 19 is slidably arranged in the limiting groove 20. The bracket 8 is provided with a sliding hole 21 for the sliding of the screw 17. The limiting block 19 is fixed in the sliding hole 21. In this embodiment, the two ends of the identification rope 9 will only be offset in the direction along the length direction of the screw 17. Therefore, after comparing with the whiteboard 12, by rotating the threaded sleeve 18, the threaded sleeve 18 and the screw 17 are spirally engaged. Under the limiting action of the limiting block 19 and the limiting groove 20, the screw 17 cannot rotate and can only move along the length direction of the sliding hole 21. The screw 17 is fixedly connected to the winding frame 14. The screw 17 controls the winding frame 14 to move until the identification rope 9 coincides with the identification line on the whiteboard 12. At this time, the identification rope 9 continues to be wound until the tension sensor 10 reaches the set value.

[0061] The inspection part is used to observe whether the vacuum suction cup 13 is adsorbed and firmly fixed to the I-shaped building block 1 and the L-shaped building block 2. The inspection part includes an inspection motor 22, an inspection block 23 fixedly connected to the output end of the inspection motor 22, a push rod 24 elastically arranged on the inspection block 23, an electromagnet 25, a curing group 26 and a softening group 27. The inspection part is set on any building block. Of course, the parts corresponding to the inspection block 23 can be fixed to the building block by bolts. The inspection block 23 is provided with a through hole for the identification rope 9 to pass through, and the bottom wall of the through hole is provided with a curing hole 28. The push rod 24 ejects the identification rope 9 into the curing hole 28, the curing group 26 injects glue into the curing hole 28, and the softening group 27 toward the curing hole. A softener for softening the glue is injected into the curing hole 28. After the inspection block 23 is firmly connected to the identification rope 9, the inspection motor 22 is controlled to wind the identification rope 9 to detect whether the vacuum suction cup 13 is firmly fixed to the building block. A top hole is provided on the side of the through-hole away from the curing hole 28. The end of the through-hole 24 away from the through-hole is fixedly connected to the handle 33. The outer sleeve of the through-hole 24 is provided with a spring 34. The two ends of the spring 34 are respectively fixedly connected to the handle 33 and the corresponding outer wall of the inspection block 23. The electromagnet 25 is used to adsorb the handle 33. When the electromagnet 25 adsorbs the handle 33, the spring 34 is stretched and deformed, the through-hole 24 is away from the through-hole, and the end of the through-hole 24 is located in the through-hole.

[0062] The curing group 26 includes a curing tank and a first nozzle, and the softening group 27 includes a softening tank and a second nozzle. The first nozzle and the second nozzle both pass through the inspection block 23 and extend into the curing hole 28. The curing tank is filled with glue, and the softening tank is filled with a softener, which in this embodiment can be vinegar or alcohol that can be softened by adding water.

[0063] The inspection portion also includes an inspection frame 29 adsorbed on the building block, a pin 30 elastically set on the inspection frame 29, a ring 35, a pull rope 36 and a sound piece 37 fixedly connected to the tail end of the pin 30, the tip of the pin 30 abuts the side wall of the vacuum suction cup 13, the pull rope 36 is fixed on the bracket 8 and passes through the ring 35, the sound piece 37 is fixedly connected to the tail end of the pull rope 36, the sound piece 37 is used to indicate whether the vacuum suction cup 13 is separated from the corresponding building block, the inspection frame 29 is provided with an elastic hole, the pin 30 passes through the elastic hole, the side wall of the pin 30 is fixedly connected to a moving block 31, the side wall of the elastic hole is provided with a moving groove 32, and an elastic piece is fixedly connected between the corresponding side wall of the moving block 31 and the corresponding end inner wall of the moving groove 32. In this embodiment, the sound piece 37 is set to be a bell or other parts that can be shaken to make a sound.

[0064] When the vacuum suction cup 13 is detected to be firmly adsorbed and fixed, the electromagnet 25 is powered off. Under the action of the spring 34, the pushing rod 24 ejects the identification rope 9 into the curing hole 28, and the glue in the curing tank is sprayed into the curing hole 28. The glue adheres the pushing rod 24 and the identification rope 9 to the curing hole 28, thereby achieving the fixing effect of the inspection block 23 and the identification rope 9. The inspection motor 22 is controlled to rotate the inspection block 23. The inspection block 23 continuously applies pressure to the identification rope 9 during the rotation process. At this time, the tension of the tension sensor 10 continues to increase until it reaches the tension value applied to the identification rope 9 after the adjacent blocks are separated. Before this, if the vacuum suction cup 13 is separated from the corresponding block, the ejector pin 30 is pushed by the elastic member to start working, and the pull rope 36 drives the sounding member 37 to make a sound, warning the construction personnel that the vacuum suction cup 13 is not firmly fixed and needs to be re-adsorbed and fixed or the vacuum suction cup 13 needs to be replaced; if the sounding member 37 does not make a sound, it proves that the vacuum suction cup 13 is firmly adsorbed.

[0065] The implementation principle of the construction method of a prefabricated UHPC cavity module concrete shear wall in the embodiment of the present application is as follows: after comparing the whiteboard 12, by rotating the threaded sleeve 18, the threaded sleeve 18 is screwed together with the screw 17. Under the limiting action of the limiting block 19 and the limiting groove 20, the screw 17 cannot rotate and can only move along the length direction of the sliding hole 21. The screw 17 is fixedly connected to the winding rack 14. The screw 17 controls the winding rack 14 to move until the marking rope 9 coincides with the marking line on the whiteboard 12. At this time, the marking rope 9 is continued to be wound until the tension sensor 10 reaches the set value; when the marking rope 9 is installed, the whiteboard 12 is moved to a position abutting the marking rope 9. The length of the marking line on the whiteboard 12 is smaller than the length of the marking rope 9. By comparing the marking line with the marking rope 9, it can be determined whether the marking rope 9 is parallel to the plane where the I-shaped building block 1 and the L-shaped building block 2 are located.

[0066] In the initial state, the tension sensor 10 sets a fixed value, that is, the tension between the two blocks is a constant value. As long as the I-shaped block 1 or the L-shaped block 2 is offset, the marking rope 9 is subjected to the tension of the I-shaped block 1 and the L-shaped block 2, which changes. As long as the tension on the tension sensor 10 is less than or greater than the set value, the buzzer 11 will be triggered to sound an alarm, thereby alerting the construction personnel that the I-shaped block 1 and the L-shaped block 2 are offset and need to be reinstalled. Of course, in this embodiment, if the tension of the tension sensor 10 changes due to slight shaking between the blocks, it is within the allowable error range and will not trigger the buzzer 11 to sound.

[0067] When the inspection of whether the vacuum suction cup 13 is firmly adsorbed and fixed is started, the electromagnet 25 is powered off. Under the action of the spring 34, the pushing rod 24 ejects the identification rope 9 into the curing hole 28, and the glue in the curing tank is sprayed into the curing hole 28. The glue bonds the pushing rod 24 and the identification rope 9 into the curing hole 28, thereby achieving the fixing effect of the inspection block 23 and the identification rope 9. The inspection motor 22 is controlled to rotate the inspection block 23. The inspection block 23 continuously applies pressure to the identification rope 9 during the rotation process. At this time, the tension of the tension sensor 10 continues to increase until it reaches the tension value applied to the identification rope 9 after the adjacent blocks are separated. Before this, if the vacuum suction cup 13 is separated from the corresponding block, the ejector pin 30 is pushed by the elastic part to start working, and the pull rope 36 drives the sound part 37 to make a sound, warning the construction personnel that the vacuum suction cup 13 is not firmly fixed and needs to be re-adsorbed and fixed or the vacuum suction cup 13 needs to be replaced.

[0068] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A construction method for a prefabricated UHPC cavity module concrete shear wall, which is used for constructing a prefabricated UHPC cavity module concrete shear wall, comprising a straight-line block (1), an L-shaped block (2), and a T-shaped block (3), wherein each of the straight-line block (1), the L-shaped block (2), and the T-shaped block (3) is provided with a partition plate (4) for separating concrete, and the straight-line block (1), the L-shaped block (2), and the T-shaped block (3) are connected to each other in the horizontal direction via a slot (6) plate (5); Its characteristics are: S1. Prefabricate molds in the factory, making straight-line, L-shaped, and T-shaped molds. Use ultra-high performance concrete (UHPC) for pouring. Cover the surface with a protective film and spray water regularly to keep the concrete surface moist. De-molding is possible after reaching a certain strength. S2, transporting prefabricated concrete blocks to the construction site; S3, a semicircular slot (6) is opened on the front panel of the concrete block and arranged symmetrically in the upper and lower and left and right directions. The upper slot (6) opens upward and the lower slot opens downward. When the upper and lower blocks are spliced ​​together, a circular shape is formed to place steel bars. S4. During construction, the first batch of masonry needs to be mortared on the ground, and the "matching holes and staggered seams" splicing method is adopted, that is, when splicing, the upper and lower skins are aligned with the holes, and the U-shaped card slot (6) is aligned with the protruding key slot (7) below for splicing. If it does not meet the requirements, it will be cut and adjusted on site; S5. Pass the transverse steel bars through the circular steel bar holes formed by splicing, seal the gaps with mortar, insert steel bars above the cavity, and tie and overlap them to form a steel bar skeleton; S5: When reinforcing the shear wall, place the blocks on one side of the old shear wall, connect the blocks and the old shear wall with bolts, and then pour concrete into the cavity layer by layer. S6. During the construction process, the expansion of the upper and lower blocks needs to be monitored in real time. If positional displacement occurs between adjacent blocks, the upper and lower adjacent straight-line blocks (1), L-shaped blocks (2) or T-shaped blocks (3) need to be pulled in time. In S6, a detection mechanism is used to detect the positional relationship between the upper and lower building blocks. The detection mechanism includes two brackets (8), an adsorption component, and an identification component for identifying whether the upper and lower building blocks are offset. The adsorption component is used to achieve the adsorption and fixation of the two brackets (8) to the corresponding building blocks respectively; the identification component includes an identification rope (9), a tension sensor (10), a winding portion for winding the identification rope (9), and a judgment portion for judging whether the identification rope (9) is parallel to the corresponding building block. The two ends of the identification rope (9) are respectively connected by the two winding portions, that is, the identification rope (9) is in a vertical state in the initial state. The tension sensor (10) is used to connect the identification rope (9) located between the two winding portions. The tension sensor (10) is electrically connected to a buzzer (11); the judgment portion includes a whiteboard (12) slidably set on any one of the brackets (8). A plurality of identification lines are displayed on the whiteboard (12). If the identification rope (9) coincides with one of the identification lines, it is in a vertical state.

2. The construction method of the prefabricated UHPC cavity module concrete shear wall according to claim 1, characterized in that: The I-shaped building block (1), L-shaped building block (2) and T-shaped building block (3) are all provided with a U-shaped slot (6) on the top and a key slot (7) adapted to the slot (6) on the bottom. The slot (6) and the key slot (7) are both the same length as the corresponding I-shaped building block (1), L-shaped building block (2) or T-shaped building block (3).

3. The construction method of a prefabricated UHPC cavity module concrete shear wall according to claim 1, characterized in that: The adsorption assembly comprises two vacuum suction cups (13), a viewing portion for judging whether the corresponding building blocks of the vacuum suction cups (13) are adsorbed and fixed, and an adjustment portion for adjusting the position of one end of the identification rope (9). The two brackets (8) are respectively fixedly connected to the two vacuum suction cups (13).

4. The construction method of a prefabricated UHPC cavity module concrete shear wall according to claim 3, characterized in that: The winding portion comprises a winding frame (14) movably arranged on the bracket (8), a winding roller (15) rotatably arranged on the winding frame (14) and a winding motor (16); the adjusting portion comprises a screw (17) slidably arranged on the bracket (8), a threaded sleeve (18) rotatably connected to the bracket (8) and a limiting block (19); a peripheral wall of the screw (17) is provided with a limiting groove (20) for the sliding of the limiting block (19); both ends of the limiting groove (20) are closed; the limiting block (19) is slidably arranged in the limiting groove (20); the bracket (8) is provided with a sliding hole (21) for the sliding of the screw (17); the limiting block (19) is fixed in the sliding hole (21); and the end of the screw (17) is fixedly connected to the winding frame (14).

5. The construction method of a prefabricated UHPC cavity module concrete shear wall according to claim 4, characterized in that: The inspection part comprises an inspection motor (22), an inspection block (23) fixedly connected to the output end of the inspection motor (22), an ejection rod (24) elastically arranged on the inspection block (23), an electromagnet (25), a curing group (26) and a softening group (27); the inspection block (23) is provided with a through hole for the identification rope (9) to pass through, and the bottom wall of the through hole is provided with a curing hole (28); the ejection rod (24) ejects the identification rope (9) into the curing hole (28); the curing group (26) injects glue into the curing hole (28); the softening group (27) injects a softener for softening the glue into the curing hole (28); after the inspection block (23) is firmly connected to the identification rope (9), the inspection motor (22) is controlled to wind the identification rope (9) to detect whether the vacuum suction cup (13) is firmly fixed to the building block.

6. The construction method of a prefabricated UHPC cavity module concrete shear wall according to claim 5, characterized in that: The inspection portion further includes an inspection frame (29) adsorbed on the building block, a pin (30) elastically arranged on the inspection frame (29), a collar (35) fixedly connected to the tail end of the pin (30), a pull rope (36) and a sound piece (37), the tip of the pin (30) abuts against the side wall of the vacuum suction cup (13), the pull rope (36) is fixed on the bracket (8) and passes through the collar (35), the sound piece (37) is fixedly connected to the tail end of the pull rope (36), and the sound piece (37) is used to indicate whether the vacuum suction cup (13) is separated from the corresponding building block.

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