Beam-hung assembled wall connecting member structure and construction method thereof

Abstract

The application relates to a beam-hung assembly type wall connecting piece structure and a construction method thereof, which comprises a bottom plate, vertical steel pipes and two vertical side plates, the vertical steel pipes and the two vertical side plates are fixedly arranged on the bottom plate, the two vertical side plates are arranged at intervals and a clamping beak is formed between the two vertical side plates; a sliding sleeve ring is sleeved on the vertical steel pipe, a horizontal hanging rod is fixed on the outer wall of the sliding sleeve ring, a locking bolt is installed on the sliding sleeve ring, and a clamping space is formed between the horizontal hanging rod and the clamping beak. The beam-hung assembly type wall connecting piece structure in the application omits multiple processes such as pre-burying, protecting, installing, cutting, tail removing and repairing of a traditional wall connecting piece on a structure beam, and only needs to complete the installation or removal process once, so that hidden troubles of structure leakage and steel bar corrosion in the later period are eliminated, installation and removal convenience is improved, construction progress can be accelerated, the construction period can be shortened, and the applicability is high.

Description

Technical Field

[0001] This application relates to the technical field of construction tools, and in particular to a beam-mounted prefabricated wall tie structure and its construction method. Background Technology

[0002] Currently, exterior wall scaffolding is an essential structural frame for exterior wall structure and decoration construction in the building construction process. It can withstand corresponding loads and has operation and protection functions. Under the action of wind load, the height-to-width ratio of the scaffolding erected along the perimeter of the building must be controlled by the firm connection of wall ties in order to meet the stability requirements of the scaffolding.

[0003] Traditional wall ties are typically made by pre-embedding steel pipes or various types of iron parts such as bolts, angle steel, reinforcing bars, and nuts in the concrete of the outer beams to connect the external scaffolding.

[0004] Regarding the aforementioned technologies, the inventors believe that the above-mentioned construction methods not only cannot reuse embedded materials and consume a large amount of steel, but also involve many construction procedures, are cumbersome, time-consuming and labor-intensive, and the embedded parts are easily damaged during construction and the accuracy of the pre-embedded positions is difficult to control. Furthermore, when encountering wall tie parts during the construction and decoration of the exterior wall structure, the position of the wall tie parts cannot be adjusted.

[0005] Furthermore, after the scaffolding is dismantled, the embedded parts need to be cut off and the structure needs to be repaired. The dismantling progress and the repair of the holes in the structural wall ties have certain technical interval requirements, which increases the difficulty of repair. When the repair is not tight, a large amount of structural leakage or oxidation of exposed steel embedded parts will be conducted to the steel bars in the beam, affecting the durability and safety of the structure. Therefore, the existing embedded part materials as wall ties need to be improved. Summary of the Invention

[0006] To improve the ease of installation and removal of wall ties, this application provides a beam-mounted prefabricated wall tie structure and its construction method.

[0007] The technical solution for the beam-mounted prefabricated wall tie structure provided in this application is as follows:

[0008] A beam-mounted prefabricated wall tie structure includes a base plate, a vertical steel pipe, and two vertical side plates. The vertical steel pipe and the two vertical side plates are fixedly mounted on the base plate, and the two vertical side plates are spaced apart and form a clamping mouth between the two vertical side plates.

[0009] A sliding collar is fitted onto the vertical steel pipe, a horizontal hanging rod is fixed on the outer wall of the sliding collar, a locking bolt is installed on the sliding collar, and a clamping space is formed between the horizontal hanging rod and the clamping mouth.

[0010] Preferably, the two vertical side plates and the vertical steel pipe are fixed to the base plate by welding, and the horizontal hanging rod is fixed to the sliding collar by welding.

[0011] Preferably, the two vertical side plates are set at a 90° angle with the bottom plate.

[0012] Preferably, the vertical steel pipe is set at an angle of 88° with the base plate, and the vertical steel pipe is inclined toward the side of the vertical side plate.

[0013] Preferably, a connecting rod is provided between the vertical steel pipe and one of the vertical side plates, and the two ends of the connecting rod are respectively fixed to the vertical steel pipe and the vertical side plate by welding.

[0014] Preferably, the top end of the vertical steel pipe is threaded with a limit bolt to prevent loosening.

[0015] Preferably, the vertical steel pipe has a fastener limiting center line marked on it.

[0016] Preferably, the horizontal hanging rod is provided with an anti-detachment limiting mechanism;

[0017] The anti-detachment limiting mechanism includes an installation cavity formed along the axial direction of the horizontal hanging rod. A sliding rod is slidably installed in the installation cavity. Several inclined surfaces are provided on the outer wall of the sliding rod. Several inclined holes are provided on the horizontal hanging rod. The inclined holes are inclined towards the sliding collar. An anti-detachment rod is provided in the inclined holes. The end of the anti-detachment rod is connected to the inclined surface of the sliding rod through a linkage part. A spring spring is provided in the installation cavity to provide elastic force to the sliding rod towards the sliding collar. An installation port communicating with the installation cavity is provided on the sliding collar. A driving part for driving the sliding rod to slide is provided in the vertical steel pipe.

[0018] Preferably, the driving part includes a driving port formed on the side wall of the vertical steel pipe and a driving block slidably installed in the driving port. A driving spring is provided inside the vertical steel pipe. One end of the driving spring is fixed to the inner wall of the vertical steel pipe, and the other end of the driving spring is fixed to the driving block. The end of the driving block is provided with a conical surface. The driving block is used to abut against the sliding rod to drive the sliding rod to move.

[0019] Preferably, the end of the anti-detachment rod is provided with a guide slope, and the inclination direction of the guide slope is the same as the inclination direction of the inclined hole.

[0020] The construction method for a beam-mounted prefabricated wall tie structure provided in this application adopts the following technical solution:

[0021] A construction method for a beam-mounted prefabricated wall tie structure using the above-described technical solution includes the following steps:

[0022] Step S100: Fabricate prefabricated beam-mounted wall ties;

[0023] Step S200: After removing the bottom formwork of the beam, install the prefabricated wall tie for the beam. Slide the sliding collar to the top of the vertical steel pipe, insert the clamping beak with the opening facing upward into the bottom of the beam, turn the horizontal hanging rod to be perpendicular to the longitudinal direction of the beam and hang it on the top of the beam, and tighten the locking bolt on the sliding collar to fix the prefabricated wall tie for the beam on the beam.

[0024] Step S300: Install the external scaffolding. Tighten one end of the short steel pipe against the side wall of the beam and fasten it to the center line of the fastener limit of the prefabricated wall tie of the beam with double or single fasteners. The other end of the short steel pipe is used to fasten the upright of the external scaffolding with double or single fasteners to fix the external scaffolding to the prefabricated wall tie of the beam.

[0025] Step S400: After the exterior wall construction is completed, dismantle the exterior scaffolding and remove the prefabricated wall ties from the beams.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The beam-mounted prefabricated wall tie structure in this application can be flexibly adjusted in horizontal installation position according to the height of the external wall scaffolding and the magnitude of the wind load, ensuring reasonable stress distribution and safety and reliability.

[0028] 2. The beam-mounted prefabricated wall tie structure in this application omits the multiple processes required for traditional wall ties, such as pre-embedding, protection, installation, cutting, tail removal, and repair on the structural beam. Only a single installation or removal process is needed, eliminating the potential risks of structural leakage and steel corrosion in the later stages, improving the convenience of installation and removal, accelerating the construction progress, shortening the construction period, and making it highly applicable. Attached Figure Description

[0029] Figure 1 This is the first structural schematic diagram of the beam-mounted prefabricated wall tie structure.

[0030] Figure 2 This is a schematic diagram of the second structure of the beam-mounted prefabricated wall tie structure.

[0031] Figure 3 This is a stress analysis diagram of a beam-mounted prefabricated wall tie structure.

[0032] Figure 4 This is a schematic diagram of the installation of the beam-mounted prefabricated wall tie structure on the beam.

[0033] Figure 5 This is a schematic diagram of the installation of the sliding collar on the vertical steel pipe.

[0034] Figure 6 yes Figure 5 Enlarged schematic diagram of part A in the middle.

[0035] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Vertical steel pipe; 3. Vertical side plate; 4. Clamping beak; 5. Connecting rod; 6. Sliding collar; 7. Horizontal hanging rod; 8. Locking bolt; 9. Limiting and anti-detachment bolt; 10. Fastener limiting center line; 11. Anti-detachment limiting mechanism; 111. Mounting cavity; 112. Sliding rod; 113. Inclined surface; 114. Inclined hole; 115. Anti-detachment rod; 116. Dovetail groove; 117. Dovetail block; 118. Elastic spring; 119. Screw plug; 120. Mounting port; 121. Drive port; 122. Drive block; 123. Drive spring; 124. Conical surface; 125. Guide inclined surface. Detailed Implementation

[0036] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0037] Example 1

[0038] A beam-mounted prefabricated wall tie structure is applicable to the installation, dismantling, supplementary support, and replacement of wall ties for steel pipe scaffolding in multi-story and high-rise cast-in-place reinforced concrete external frame structures or external steel beam structures using aluminum formwork or other tool-type formwork. It is also applicable to the installation, dismantling, supplementary support, and replacement of wall ties for steel pipe scaffolding in multi-story and high-rise cast-in-place reinforced concrete external frame structures using wooden formwork when there is no tight deadline.

[0039] Reference Figure 1 and Figure 2 As shown, the beam-mounted prefabricated wall tie structure includes a base plate 1, a vertical steel pipe 2, and two vertical side plates 3. The vertical steel pipe 2 and the two vertical side plates 3 are fixedly installed on the base plate 1, and the two vertical side plates 3 and the vertical steel pipe 2 are fixed to the base plate 1 by welding.

[0040] Vertical steel pipe 2 and two vertical side plates 3 are set at intervals. The angle between the two vertical side plates 3 and the bottom plate 1 is 90°. A clamping beak 4 is formed between the two vertical side plates 3, and the clamping beak 4 is set facing upward.

[0041] The vertical steel pipe 2 is set at an angle of 88° with the base plate 1, and the vertical steel pipe 2 is inclined towards the vertical side plate 3. A connecting rod 5 is provided between the vertical steel pipe 2 and one of the vertical side plates 3, which is the vertical side plate 3 closest to the vertical steel pipe 2. The two ends of the connecting rod 5 are fixed to the vertical steel pipe 2 and the vertical side plate 3 respectively by welding.

[0042] A sliding collar 6 is fitted onto the vertical steel pipe 2. A horizontal hanging rod 7 is fixed to the outer wall of the sliding collar 6. The horizontal hanging rod 7 is fixed to the sliding collar 6 by welding. A locking bolt 8 is installed on the sliding collar 6. By rotating the locking bolt 8, the end of the locking bolt 8 can abut against the outer wall of the vertical steel pipe 2, thereby fixing the sliding collar 6 at any position on the vertical steel pipe 2. The horizontal hanging rod 7 is set horizontally and is placed horizontally above the clamping beak 4, thereby forming a clamping space between the horizontal hanging rod 7 and the clamping beak 4.

[0043] The top end of the vertical steel pipe 2 is threaded with a limit bolt 9, which is used to prevent the sliding collar 6 from sliding out from the top of the vertical steel pipe 2.

[0044] The vertical steel pipe 2 has a fastener limiting center line 10 marked on it. The fastener limiting center line 10 is used to connect double fasteners or single fasteners.

[0045] Therefore, after the beam-hanging prefabricated wall tie is manufactured and the bottom formwork of the beam is removed, the beam-hanging prefabricated wall tie needs to be installed on the beam. First, slide the sliding collar 6 to the top of the vertical steel pipe 2, put the clamping beak 4 upward into the bottom of the beam, turn the horizontal hanging rod 7 to be perpendicular to the longitudinal direction of the beam and hang it on the top of the beam, and tighten the locking bolt 8 on the sliding collar 6 to fix the beam-hanging prefabricated wall tie on the beam.

[0046] After the beam-mounted prefabricated wall tie is installed, external scaffolding needs to be installed on the beam-mounted prefabricated wall tie. First, tighten one end of the short steel pipe against the side wall of the beam and fasten it with double or single fasteners at the center line of the fastener limit of the beam-mounted prefabricated wall tie. The other end of the short steel pipe is used to fasten the uprights of the external scaffolding with double or single fasteners to fix the external scaffolding to the beam-mounted prefabricated wall tie.

[0047] After the exterior wall construction is completed, when there is no protective structure on the beam, first remove the external scaffolding from the prefabricated wall ties on the beam, and then remove the prefabricated wall ties from the beam. Simply loosen the locking bolts 8 on the sliding collar 6 to rotate the horizontal hanging rod 7 90°, and then remove the clamping beak 4 from the bottom of the beam.

[0048] When there is an enclosure structure on the beam, the prefabricated wall ties hanging from the beam are removed, and then the prefabricated wall ties hanging from the beam are removed from the beam. First, the limiting anti-detachment bolts 9 on the vertical steel pipe 2 are unscrewed, the clamping beak 4 is detached from the bottom of the beam and removed, and then the horizontal hanging rod 7 is pulled out from the enclosure structure at the top of the beam. At this time, the wall surface of the enclosure structure at the position of the horizontal hanging rod 7 needs to be filled with grout and smoothed.

[0049] This application, through extensive theoretical calculations and practical application, uses prefabricated beam-mounted wall ties as accessories for modular external scaffolding. It overcomes many shortcomings of traditional wall ties, and provides clear stress distribution. While ensuring quality and safety, it can utilize scrap steel to make modular wall ties, which are reusable, save steel, facilitate construction, and reduce costs. It can fully realize the goal of integrated prefabricated construction of external scaffolding and has a promising development prospect.

[0050] The beam-mounted prefabricated wall tie structure of this application has the following advantages:

[0051] 1. The beam-mounted prefabricated wall tie structure has a clear stress distribution, and its ultimate bearing capacity can be accurately calculated. This eliminates the risk that the safety of traditional wall ties cannot be confirmed through calculation. The horizontal installation position can be flexibly adjusted according to the height of the external scaffolding and the size of the wind load to ensure reasonable stress distribution and safety and reliability.

[0052] 2. The beam-mounted prefabricated wall tie structure can be supplemented and installed as needed for the external scaffolding, or its position can be adjusted for installation when construction is inconvenient.

[0053] 3. Installation can be completed with just a screwdriver and an electric wrench. There is no welding process or special tools required. The construction process is simple, the operation is convenient, and the installation method is easy to master, which greatly reduces the construction safety risks.

[0054] 4. This application omits the multiple processes required for traditional wall ties, such as pre-embedding, protection, installation, cutting, tail removal, and repair on structural beams. Only a single installation or removal process is needed, which can speed up the construction progress, shorten the construction period, and has strong applicability.

[0055] 5. This application can utilize steel scrap materials to make a complete set, weighing only 10.6Kg. It can be reused repeatedly, does not consume materials, saves resources, is highly efficient and environmentally friendly, and effectively reduces project costs.

[0056] 6. The construction work using the above-mentioned beam-mounted prefabricated wall tie structure is a completely non-destructive operation, which eliminates the need for pre-embedding and repair on the beams and eliminates the hidden dangers of structural leakage and steel corrosion in the later stage.

[0057] The following design will be based on steel structure calculation theory for the beam-mounted prefabricated wall tie structure.

[0058] In one embodiment, the base plate 1 and the two vertical side plates 3 are both made of Q345 steel plate. The length (along the beam longitudinal direction) × thickness × height of the vertical side plate 3 is 12 × 18 × 84 (mm), and the length (along the beam longitudinal direction) × thickness × height of the base plate 1 is 441 × 16 × 120 (mm). The Q345 steel plate has a compressive strength of 295 MPa, a tensile strength of 250 MPa for the weld seam (Grade III), and a shear strength of 170 MPa. It is worth noting that the length of the base plate 1 can be adjusted according to the beam specifications, and the clamping mouth 4 formed between the two vertical side plates 3 is used to clamp the bottom of the beam. Therefore, the spacing between the two vertical side plates 3 can be adjusted according to the beam specifications.

[0059] In one embodiment, the vertical steel pipe 2 is made of Q345 steel pipe with parameters of Φ48×3.5 (mm).

[0060] In one embodiment, the connecting rod 5 is made of Φ14 steel bar, the length of the connecting rod 5 is 100mm, and the connecting rod 5 is fixed at the top position of the vertical side plate 3.

[0061] In one embodiment, the height of the fastener limiting center line 10 from the upper surface of the base plate 1 is 134mm. The maximum force of a single fastener is 6000N, and the maximum force of a double fastener is 12000N. This embodiment uses the maximum force of a double fastener of 12000N as an example for explanation.

[0062] Reference Figure 3 As shown, the strength calculation for the beam-mounted prefabricated wall tie structure is as follows:

[0063] 1. Taking point B as the fulcrum, Fa × 84 = 12000 × 134, so Fa = 19143 N.

[0064] 2. The forces are balanced in the horizontal direction, so Fd = 7143 N.

[0065] 3. Calculation of straight welds on vertical side plates 3B-B1 and C-C1:

[0066] Mb = 134 × 12000 = 1608000 N / mm;

[0067] ;

[0068] ;

[0069] .

[0070] 4. The strength calculation of base plate 1 is as follows:

[0071] .

[0072] 5. The strength calculations for connecting rod 5 and weld strength are as follows:

[0073] ;

[0074] .

[0075] 6. The strength calculation for the weld of vertical steel pipe 2 is as follows:

[0076] The weld area of ​​vertical steel pipe 2 is the circumferential area of ​​vertical steel pipe 2, L=2πR=48×3=144mm2, where π is taken as 3.

[0077] Weld strength is .

[0078] 7. The deflection of vertical steel pipe 2 is calculated as follows:

[0079] .

[0080] As can be seen from the above calculations, the base plate 1, vertical side plate 3, vertical steel pipe 2, and connecting rod 5 all meet the corresponding stress requirements.

[0081] The following calculations are performed on the concrete splitting failure of the beam.

[0082] In the standard value (N) of the tensile bearing capacity at failure of the concrete cone, Scr,sp is taken as 2Ccr,sp, and Ccr,sp = 2hef, which are replaced by scr,sp and ccr,sp respectively. scr,sp is taken as 2ccr,sp, and ccr,sp = 2hef. Considering the interlocking force of the vertical side plate 3 on both sides of the beam, which is equivalent to the splitting effect caused by the bolt penetration at the highest point of the vertical side plate 3 on both sides of the beam, hef is calculated based on a minimum beam width of 200mm.

[0083]

[0084] It is evident that the shear bearing capacity of the concrete beam at the location of the prefabricated wall tie structure in this application is much greater than its splitting bearing capacity.

[0085] Example 2

[0086] Based on Example 1, referring to Figure 4 As shown, the horizontal hanging rod 7 is equipped with an anti-detachment limiting mechanism 11. After the beam-hanging prefabricated wall tie structure is installed on the beam, the horizontal hanging rod 7 will be located at the top of the beam. At this time, the top of the beam is selected to be enclosed by the enclosure structure according to the construction of the external wall. This application can improve the connection stability and connection strength between the horizontal hanging rod 7 and the top of the beam through the anti-detachment limiting mechanism 11.

[0087] Reference Figure 5 and Figure 6As shown, the anti-detachment limiting mechanism 11 includes an installation cavity 111 opened along the axial direction of the horizontal hanging rod 7. The installation cavity 111 passes through the horizontal hanging rod 7, making the horizontal hanging rod 7 a hollow structure. In one embodiment, the cross-section of the installation cavity 111 is circular or polygonal. A sliding rod 112 is slidably installed in the installation cavity 111, and the cross-sectional shape of the sliding rod 112 is adapted to the cross-sectional shape of the installation cavity 111.

[0088] The outer wall of the sliding rod 112 is provided with several inclined surfaces 113, which extend from the middle of the sliding rod 112 to its end. The multiple inclined surfaces 113 are circumferentially distributed on the outer wall of the sliding rod 112. The horizontal hanging rod 7 is provided with several inclined holes 114, which are located at the positions of the inclined surfaces 113 of the sliding rod 112. The inclined holes 114 are inclined towards the sliding collar 6, and the multiple inclined holes 114 are circumferentially arranged on the horizontal hanging rod 7.

[0089] An anti-detachment rod 115 is provided in the inclined hole 114. The end of the anti-detachment rod 115 is connected to the inclined surface 113 of the sliding rod 112 through a linkage. The linkage includes a dovetail groove 116 and a dovetail block 117. The dovetail groove 116 is provided on the inclined surface 113 of the sliding rod 112 and is distributed along the length direction of the inclined surface 113 of the sliding rod 112. The dovetail block 117 is provided at the end of the anti-detachment rod 115 and is slidably fitted in the dovetail groove 116. Thus, when the sliding rod 112 slides back and forth in the mounting cavity 111, the sliding rod 112 can drive the anti-detachment rod 115 to slide in the inclined hole 114 through the linkage.

[0090] A spring 118 is provided inside the mounting cavity 111 to provide elastic force to the sliding rod 112 toward the sliding collar 6. That is, a screw plug 119 is installed in the end opening of the mounting cavity 111, the spring 118 is disposed in the mounting cavity 111, one end of the spring 118 is connected to the screw plug 119, and the other end of the spring 118 is connected to the end of the sliding rod 112.

[0091] The sliding collar 6 has an installation port 120 communicating with the installation cavity 111, and a driving part for driving the sliding rod 112 to slide inside the vertical steel pipe 2. Thus, driven by the spring spring 118, the end of the sliding rod 112 will be placed in the installation port 120, and the end face of the sliding rod 112 will be flush with the inner wall surface of the sliding collar 6. At this time, under the action of the linkage part, the end of the anti-disengagement rod 115 will be flush with the outer surface of the horizontal hanging rod 7.

[0092] The sliding rod 112 is driven to slide along the mounting cavity 111 by the drive unit. At this time, the sliding rod 112 compresses the elastic spring 118, and the anti-detachment rod 115 will extend from the outer surface of the horizontal hanging rod 7 under the action of the linkage unit. Thus, the anti-detachment rod 115 can abut against the top of the beam or the enclosure structure of the top of the beam, making it difficult for the horizontal hanging rod 7 to be pulled out from the top of the beam or the enclosure structure of the top of the beam, thereby improving the connection strength and connection stability of the horizontal hanging rod 7 in the top of the beam or the enclosure structure of the top of the beam.

[0093] To further improve the contact strength between the anti-detachment rod 115 and the top of the beam or the enclosure structure, a guide slope 125 is provided at the end of the anti-detachment rod 115. The inclination direction of the guide slope 125 is the same as the inclination direction of the inclined hole 114. By providing the guide slope 125, the end of the anti-detachment rod 115 forms a spike end.

[0094] The vertical steel pipe 2 is hollow, and the driving part is located inside the vertical steel pipe 2 and is positioned opposite to the sliding rod 112. The driving part includes a driving port 121 opened on the side wall of the vertical steel pipe 2 and a driving block 122 slidably installed in the driving port 121. The driving block 122 is horizontally arranged, and a driving spring 123 is installed inside the vertical steel pipe 2. One end of the driving spring 123 is fixed to the inner wall of the vertical steel pipe 2, and the other end of the driving spring 123 is fixed to the driving block 122. The end of the driving block 122 is provided with a conical surface 124. The driving block 122 is used to abut against the sliding rod 112 to drive the sliding rod 112 to move.

[0095] Therefore, when the sliding collar 6 rotates, causing the mounting port 120 to be aligned with the driving port 121, the driving block 122 extends from the driving port 121 and abuts against the sliding rod 112 to drive the sliding rod 112 to move, thereby causing the anti-detachment rod 115 to extend from the outer surface of the horizontal hanging rod 7. When the mounting port 120 of the sliding collar 6 is not aligned with the driving port 121, the driving block 122 will be recessed into the driving port 121, thus not interfering with the rotation and fitting installation of the sliding collar 6 on the vertical steel pipe 2.

[0096] With the aforementioned drive mechanism, the sliding collar 6 rotates, and after the horizontal hanging rod 7 is placed horizontally on the top of the beam, the drive block 122 can push the sliding rod 112. When it is necessary to remove the horizontal hanging rod 7 from the top of the beam, the drive block 122 can be compressed and retracted into the drive port 121 by rotating the sliding collar 6 or by pulling the vertical steel pipe 2 out of the sliding collar 6, and no longer abutting against the sliding rod 112. The operation is simple and convenient.

[0097] Example 3

[0098] A construction method for a beam-mounted prefabricated wall tie structure using the above-described technical solution includes the following steps:

[0099] Step S100: Fabricate the beam-mounted prefabricated wall tie.

[0100] Step S200: After removing the bottom formwork of the beam, install the prefabricated wall tie for the beam. Slide the sliding collar 6 to the top of the vertical steel pipe 2, insert the clamping beak 4 upwards into the bottom of the beam, turn the horizontal hanging rod 7 to be perpendicular to the longitudinal direction of the beam and hang it on the top of the beam, and tighten the locking bolt 8 on the sliding collar 6 to fix the prefabricated wall tie for the beam on the beam.

[0101] Step S300: Install the external scaffolding. Tighten one end of the short steel pipe against the side wall of the beam and fasten it to the prefabricated wall tie of the beam at the center line 10 with double or single fasteners. The other end of the short steel pipe is used to fasten the upright of the external scaffolding with double or single fasteners to fix the external scaffolding to the prefabricated wall tie of the beam.

[0102] Step S400: After the exterior wall construction is completed, dismantle the external scaffolding and remove the prefabricated wall ties from the beams. Specifically, when there is no retaining structure on the beam, first remove the external scaffolding from the prefabricated wall ties, and then remove the prefabricated wall ties from the beam. Simply loosen the locking bolts 8 on the sliding collar 6 to rotate the horizontal hanging rod 7 90°, and then release the clamping beak 4 from the bottom of the beam.

[0103] When there is an enclosure structure on the beam, the prefabricated wall ties hanging from the beam are removed, and then the prefabricated wall ties hanging from the beam are removed from the beam. First, the limiting anti-detachment bolts 9 on the vertical steel pipe 2 are unscrewed, the clamping beak 4 is detached from the bottom of the beam and removed, and then the horizontal hanging rod 7 is pulled out from the enclosure structure at the top of the beam. At this time, the wall surface of the enclosure structure at the position of the horizontal hanging rod 7 needs to be filled with grout and smoothed.

[0104] This application, through extensive theoretical calculations and practical application, uses prefabricated beam-mounted wall ties as accessories for modular external scaffolding. It overcomes many shortcomings of traditional wall ties, and provides clear stress distribution. While ensuring quality and safety, it can utilize scrap steel to make modular wall ties, which are reusable, save steel, facilitate construction, and reduce costs. It can fully realize the goal of integrated prefabricated construction of external scaffolding and has a promising development prospect.

[0105] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A beam-mounted prefabricated wall tie structure, characterized in that, It includes a base plate (1), a vertical steel pipe (2) and two vertical side plates (3). The vertical steel pipe (2) and the two vertical side plates (3) are fixedly installed on the base plate (1). The two vertical side plates (3) are spaced apart and form a clamping mouth (4) between the two vertical side plates (3). A sliding collar (6) is fitted onto the vertical steel pipe (2), a horizontal hanging rod (7) is fixed on the outer wall of the sliding collar (6), a locking bolt (8) is installed on the sliding collar (6), and a clamping space is formed between the horizontal hanging rod (7) and the clamping beak (4). The horizontal hanging rod (7) is equipped with an anti-detachment limiting mechanism (11); The anti-detachment limiting mechanism (11) includes an installation cavity (111) axially formed along the horizontal hanging rod (7). A sliding rod (112) is slidably installed in the installation cavity (111). Several inclined surfaces (113) are provided on the outer wall of the sliding rod (112). Several oblique holes (114) are provided on the horizontal hanging rod (7). The oblique holes (114) are inclined toward the sliding collar (6). An anti-detachment rod (115) is provided in the oblique holes (114). The end of the anti-detachment rod (115) is connected to the inclined surface (113) of the sliding rod (112) through a linkage part. The mounting cavity (111) is provided with a spring spring (118) for providing the sliding rod (112) with elastic force toward the sliding collar (6). The sliding collar (6) is provided with a mounting port (120) communicating with the mounting cavity (111). The vertical steel pipe (2) is provided with a driving part for driving the sliding rod (112) to slide. The driving unit includes a driving port (121) opened on the side wall of the vertical steel pipe (2) and a driving block (122) slidably installed in the driving port (121). A driving spring (123) is provided inside the vertical steel pipe (2). One end of the driving spring (123) is fixed on the inner wall of the vertical steel pipe (2), and the other end of the driving spring (123) is fixed on the driving block (122). The end of the driving block (122) is provided with a conical surface (124). The driving block (122) is used to abut against the sliding rod (112) to drive the sliding rod (112) to move.

2. The beam-mounted prefabricated wall tie structure according to claim 1, characterized in that, The two vertical side plates (3) and the vertical steel pipe (2) are fixed to the base plate (1) by welding, and the horizontal hanging rod (7) is fixed to the sliding collar (6) by welding.

3. The beam-mounted prefabricated wall tie structure according to claim 1, characterized in that, The two vertical side plates (3) are set at an angle of 90° with the bottom plate (1), the vertical steel pipe (2) is set at an angle of 88° with the bottom plate (1), and the vertical steel pipe (2) is set inclined toward the vertical side plate (3).

4. The beam-mounted prefabricated wall tie structure according to claim 1, characterized in that, A connecting rod (5) is provided between the vertical steel pipe (2) and one of the vertical side plates (3), and the two ends of the connecting rod (5) are respectively fixed to the vertical steel pipe (2) and the vertical side plate (3) by welding.

5. The beam-mounted prefabricated wall tie structure according to claim 1, characterized in that, The top end of the vertical steel pipe (2) is threaded with a limit bolt (9) to prevent detachment.

6. The beam-mounted prefabricated wall tie structure according to claim 1, characterized in that, The vertical steel pipe (2) has a fastener limit center line (10) marked on it.

7. A beam-mounted prefabricated wall tie structure according to claim 1, characterized in that, The end of the anti-detachment rod (115) is provided with a guide slope (125), and the inclination direction of the guide slope (125) is the same as the inclination direction of the inclined hole (114).

8. A construction method for a beam-mounted prefabricated wall tie structure as described in any one of claims 1 to 7, characterized in that, Includes the following steps: Step S100: Fabricate prefabricated beam-mounted wall ties; Step S200: After removing the bottom formwork of the beam, install the prefabricated wall tie of the beam. Slide the sliding collar (6) to the top of the vertical steel pipe (2), put the clamping beak (4) facing upward into the bottom of the beam, turn the horizontal hanging rod (7) to be perpendicular to the longitudinal direction of the beam and hang it on the top of the beam, tighten the locking bolt (8) on the sliding collar (6) to fix the prefabricated wall tie of the beam on the beam. Step S300: Install the external scaffolding. Tighten one end of the short steel pipe against the side wall of the beam and fasten it to the center line (10) of the prefabricated wall tie of the beam with double or single fasteners. The other end of the short steel pipe is used to fasten the upright of the external scaffolding with double or single fasteners to fix the external scaffolding to the prefabricated wall tie of the beam. Step S400: After the exterior wall construction is completed, dismantle the exterior scaffolding and remove the prefabricated wall ties from the beams.

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