Outer scaffold wall connecting structure for stone curtain wall construction and construction method

Abstract

The invention provides an external scaffold wall connecting structure for stone curtain wall construction and a construction method. The external scaffold wall connecting structure comprises a wall body. The connecting piece is pre-buried on the wall body; a scaffold; the main keel is arranged on one side of the stone curtain wall, and the secondary keel is arranged on the main keel; the connecting mechanism is arranged on a vertical supporting rod in the scaffold and used for being connected with the secondary keel and supporting the stone curtain wall; the connecting mechanism comprises a half-pipe fastener, a supporting piece arranged at the end of the half-pipe fastener, a clamping piece arranged on the supporting piece, positioning clamping plates symmetrically arranged on the clamping piece and positioning inserting grooves formed in the positioning clamping plates. Through the collaborative design of a mechanical plug-in type connecting mechanism and a multi-stage damping system, the non-destructive quick disassembly and assembly of the scaffold wall connecting structure and the high stability under the dynamic load are achieved, and the technical problems that a traditional welding wall connecting piece is prone to fatigue and low in construction efficiency are solved.

Description

Technical Field

[0001] The present invention relates to an external scaffolding connection structure and construction method for stone curtain wall construction. Background Art

[0002] In the current construction industry, external stone curtain walls are becoming more and more popular. As a working platform used in stone curtain wall construction, external scaffolding is also widely applied. In the erection and use of external scaffolding, the scaffolding tie-in is a crucial safety insurance. The traditional scaffolding tie-in uses steel pipes embedded and then connects with the external scaffolding through right-angle fasteners. During the construction of stone curtain walls, it is necessary to frequently remove and change the tie-ins, which easily causes safety hazards such as untimely restoration, missing, and insufficient firmness of the external scaffolding tie-ins. On the one hand, it wastes a large amount of manpower, material resources, and materials. On the other hand, it increases the safety risks of the external scaffolding. Moreover, the angle steel used in the traditional curtain wall construction is directly welded to the half-pipe fastener, resulting in the inability to make the angle steel and the half-pipe fastener flush. Subsequently, the weld repair rate increases. And the scaffolding is located outdoors, so under the action of external dynamic wind loads, the welds will fatigue and have a low service life, which is somewhat dangerous for the entire structure. Therefore, the traditional tie-ins are no longer suitable for the construction of external stone curtain walls. Summary of the Invention

[0003] The present invention provides an external scaffolding connection structure and construction method for stone curtain wall construction, which can effectively solve the above problems.

[0004] The present invention is implemented as follows:

[0005] An external scaffolding connection structure for stone curtain wall construction, comprising

[0006] a wall; a connecting member embedded in the wall;

[0007] a scaffolding;

[0008] a stone curtain wall, a main keel arranged on one side of the stone curtain wall, and a secondary keel arranged on the main keel;

[0009] a connecting mechanism arranged on a vertical strut in the scaffolding for connecting with the secondary keel and supporting the stone curtain wall; the connecting mechanism includes a half-pipe fastener, a support member arranged at the end of the half-pipe fastener, a clamping member arranged on the support member, positioning card plates symmetrically arranged on the clamping member, positioning slots formed on the positioning card plates, an angle steel inserted and installed in the positioning slots, a first flat steel and a second flat steel sequentially installed on the top of the angle steel, a damping member arranged between the first flat steel and the second flat steel, and a positioning member arranged at the end of the clamping member.

[0010] A construction method for the wall connection structure of the external scaffolding in stone curtain wall construction, the method comprising the following steps:

[0011] Step 1: Drill holes in the wall at the designed spacing (usually ≤ 4m), and use chemical anchor bolts or expansion bolts as connectors for embedded fixation to ensure that the anchoring strength with the wall meets the load requirements of the scaffolding:

[0012] Step 2: Vertically fix the main keel to the wall through connectors, and correct its verticality and levelness. Weld or bolt-connect the secondary keels on the main keel to form a grid-shaped support framework, and add elastic gaskets at the joints of the secondary keels and the main keel to reduce vibration transmission;

[0013] Step 3: Erect the external scaffolding according to the specifications to ensure that the distance between the vertical struts of the vertical poles and the wall meets the construction space requirements of the stone curtain wall. Install half-pipe fasteners on the vertical struts of the scaffolding and tighten them with bolts. Weld or bolt-fix the support members to the ends of the half-pipe fasteners to ensure their levelness;

[0014] Step 4: Insert the angle steel into the positioning slot of the clamping member, and limit its lateral displacement through the limiting member. Add triangular reinforcement plates between the angle steel and the clamping member to improve the joint stiffness:

[0015] Step 5: Install the first flat steel and the second flat steel on the top of the angle steel in sequence. A damping buffer structure including the first U-shaped steel plate, the second U-shaped steel plate and the clamping block is arranged between them. Apply a pre-tightening force through the first bolt to compress the laminated buffer module. Use the U-shaped groove and the second bolt to hinge the first flat steel and the second flat steel to form a connection node with adjustable angle:

[0016] Step 6: Rotate the adjustable bolt of the quick positioning member to push the buffer rod against the positioning card plate. The spring provides a continuous pressing force to absorb the vibration of the wind load. Check the bolt torque and weld quality of all connection nodes to ensure no looseness. Insert a vertical caulking plate into the reserved cavity between the second flat steel and the clamping member to eliminate the installation gap;

[0017] Step 7: Use a level to detect the overall verticality of the scaffolding. The wall connection structure should have no visible deformation to the naked eye. During the curtain wall construction process, regularly check the bolt tightening status of the connection mechanism. When necessary, perform secondary locking through the adjustable bolt. After the curtain wall is completed, when removing the connection mechanism, only need to loosen the clamping assembly and the quick positioning member, and the angle steel can be directly withdrawn from the positioning slot to achieve damage-free disassembly.

[0018] The beneficial effects of the present invention are:

[0019] (1) Through the innovative design of the connection mechanism, the present invention ensures the stable connection between the scaffolding and the curtain wall structure while significantly improving the construction efficiency and safety performance. The half-pipe fastener is precisely matched with the scaffolding vertical pole to provide basic fixation. The support member transfers the load to the clamping member, and the mechanical detachable connection is realized through the insertion fit between the positioning slot on the positioning card plate and the angle steel. The first flat steel, the second flat steel and the damping member between them arranged at the top of the angle steel form a multi-stage shock absorption system, which effectively absorbs dynamic loads such as wind vibration. At the same time, the three-dimensional constraint mechanism (axial pre-tightening, radial limitation, anti-torsion self-locking) of the positioning member ensures that the node does not loosen under repeated loads, and finally achieves lossless disassembly and installation, perfectly solving the technical problems of easy fatigue and difficult disassembly and modification of traditional welded wall connecting members. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 is the front view of the present invention.

[0022] Figure 2 is the schematic diagram of the connection mechanism of the present invention.

[0023] Figure 3 is the partial unfolded schematic diagram of the connection mechanism of the present invention.

[0024] Figure 4 is the schematic diagram of the positioning member of the present invention.

[0025] Figure 5 is the connection schematic diagram of the buffer rod and the concealed hole of the present invention.

[0026] Explanation of the reference numerals in the drawings:

[0027] 10, wall; 20, scaffolding; 30, connecting fastener; 40, stone curtain wall; 50, main keel; 60, secondary keel;

[0028] 70. Connecting mechanism; 700. Half-pipe fastener; 701. Support member; 7010. First transverse plate; 7012. Second transverse plate; 7014. Vertical caulking plate; 702. Clamping member; 7020. Positioning card plate; 7022. Limiting member; 7024. Angle steel; 7026. Positioning slot; 703. First flat steel; 704. Second flat steel; 705. First U-shaped steel plate; 706. Second U-shaped steel plate; 7060. Clamping block; 707. U-shaped groove; 708. Reinforcing plate; 709. First bolt; 710. Upper clamping plate; 711. Second bolt; 712. Positioning member; 7122. Third bolt; 7124. Concealed hole; 7126. Fixed plate; 7128. Insert rod; 7130. Inner convex platform; 7132. Buffer rod; 7134. Spring; 713. Reserved cavity; 714. Triangular plate; 80. Connecting piece. Detailed implementation manners

[0029] To make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0030] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0031] Referring to Figures 1-4 as shown, an external scaffolding connecting wall structure for stone curtain wall construction includes

[0032] a wall 10; a connecting piece 80 embedded in the wall 10; a scaffolding 20; a stone curtain wall 40, a main keel 50 arranged on one side of the stone curtain wall 40, and a secondary keel 60 arranged on the main keel 50.

[0033] The connecting mechanism 70 is arranged on the vertical struts in the scaffolding 20 and is used to connect with the secondary keel 60 and support the stone curtain wall 40. The connecting mechanism 70 includes a half-pipe fastener 700, a support member 701 arranged at the end of the half-pipe fastener 700, a clamping member 702 arranged on the support member 701, positioning card plates 7020 symmetrically arranged on the clamping member 702, a positioning slot 7026 formed on the positioning card plate 7020, an angle steel 7024 inserted and installed in the positioning slot 7026, a first flat steel 703 and a second flat steel 704 sequentially installed on the top of the angle steel 7024, a damping member arranged between the first flat steel 703 and the second flat steel 704, and a positioning member 712 arranged at the end of the clamping member 702. The damping member includes a first U-shaped steel plate 705 and a second U-shaped steel plate 706. A clamping block 7060 for connecting with the first U-shaped steel plate 705 is arranged at the bottom of the second U-shaped steel plate 706 (integrated structure). Reinforcing plates 708 are arranged at both the upper and lower ends of the first U-shaped steel plate 705. A first bolt 709 for applying a pre-tightening force is arranged at the top of the first flat steel 703. U-shaped grooves 707 are formed at one end of both the first flat steel 703 and the second flat steel 704. A second bolt 711 (the anti-loosening design of the second bolt 711 (10.9 grade M16) adopts a combination of double nuts + spring washers) passing through the U-shaped groove 707 and connecting the first flat steel 703 and the second flat steel 704, and an upper clamping plate 710 arranged between the second bolt 711 and the U-shaped groove 707.

[0034] Specifically, the mechanical plug-in assembly (7020 - 7026) provides a detachable connection foundation, and the multi-stage damping assembly (705 - 709) forms a cooperative energy dissipation system with the mechanical plug-in assembly through pre-tightening force.

[0035] Among them, the half-pipe fastener 700 is made of high-strength cast steel, and its inner diameter is precisely matched with the vertical pole of the scaffolding 20 (tolerance ±0.5mm). It is circularly fastened by M16 high-strength bolts, and its anti-slip bearing capacity reaches 85kN, which is 60% higher than that of traditional fasteners. The support member 701 is welded to the box-shaped structure (section size 120×80×6mm) at the end of the half-pipe fastener 700, and stiffening ribs are arranged inside. The measured flexural stiffness reaches 3.5×10□N·m2 / rad. The clamping member 702 is machined from a 20mm thick Q355B steel plate. The positioning card plates 7020 symmetrically arranged on both sides are formed by laser cutting. The groove width of the positioning slot 7026 is designed to be 63mm (standard angle steel 63×63×6mm thickness + 1mm installation gap). The limiting member 7022 is a 45# steel limiting block treated by quenching, which can withstand a lateral impact load of 35kN without plastic deformation.

[0036] Further, the first flat steel 703 (with a thickness of about 12 mm) and the second flat steel 704 (with a thickness of about 10 mm) are hinged through a U-shaped groove 707, where the opening size of the U-shaped groove 707 is 32×18 mm (the diameter of the second bolt 711 is 16 mm + 2 mm of movable clearance), and the arc-shaped contact surface (R = 8 mm) of the upper clamping plate 710 ensures smooth rotation. The upper and lower ends of the first U-shaped steel plate 705 (with a plate thickness of about 8 mm and a height of about 60 mm) are welded with reinforcing plates 708 (triangular stiffeners with a thickness of about 10 mm). The clamping block 7060 (trapezoidal cross-section, upper base 12 mm / lower base 18 mm) at the bottom of the second U-shaped steel plate 706 (with a plate thickness of about 6 mm and a height of about 55 mm) forms an interference fit. The first bolt 709 (8.8 grade M20) is tightened with a pre-tightening force of 120 N·m by a hydraulic wrench, so that the laminated module generates an initial pressing force of about 25 kN.

[0037] When the wind load acts, the load is transmitted to the semi-pipe fastener 700 through the scaffolding vertical pole, and is evenly diffused through the box-shaped structure of the support member 701. The clamping member 702 realizes load transfer through the precise fit of the positioning slot 7026 and the angle steel 7024. At this time, the horizontal load is borne by the limiting member 7022, and the vertical load is dispersed through the 45° force transmission path formed by the triangular plate 714, and the vibration energy is absorbed step by step by the laminated buffer module: the first-level energy consumption: the relative sliding between the U-shaped steel plates 705 / 706 generates frictional heat (the actual measured temperature rise ≤ 15°C); the second-level energy consumption: the elastic deformation of the first flat steel 703 (the maximum strain ε = 0.3%), and the residual vibration is further filtered by the spring 7134 (stiffness coefficient 45 N / mm) of the positioning member 712.

[0038] On one side of the support member 701, a first transverse plate 7010 and a second transverse plate 7012 for supporting the first flat steel 703 and the second flat steel 704 are provided, and a vertical caulking plate 7014 is provided at the bottom of the second transverse plate 7012; a reserved cavity 713 for installing the vertical caulking plate 7014 is reserved between the second flat steel 704 and the clamping member 702.

[0039] Limiting members 7022 for restricting the angle steel 7024 are provided at both side edges of the clamping member 702. A triangular plate 714 is provided between the angle steel 7024 and the clamping member 702.

[0040] On one side of the positioning member 712, a third bolt 7122 is provided, concealed holes 7124 symmetrically formed on both sides of the third bolt 7122, a fixing plate 7126 provided at one end of the third bolt 7122, a plug rod 7128 provided on the front end surface of the fixing plate 7126, an inner boss 7130 provided inside the concealed hole 7124, a buffer rod 7132 movably provided inside the concealed hole 7124, a spring 7134 sleeved on the outer periphery of the buffer rod 7132, and one end of the spring 7134 contacts the inner boss 7130, so that the buffer rod 7132 moves back and forth.

[0041] Among them, the third bolt 7122 (10.9 grade M24) and the fixing plate 7126 form a rigid triangular support: the design value of the axial tensile force of the bolt is 120 kN (equivalent to the tensile strength of Φ25 steel bar), the fixing plate 7126 is made of Q355B steel plate with a thickness of 20 mm, and its bending modulus reaches 1333 mm³; the linkage design of the insertion rod 7128 (Φ18) and the buffer rod 7132: provides a lateral restraint force ≥15 kN, controls the free vibration amplitude of the positioning card plate 7020 within ±0.5 mm, and the pre-compression force (4.8 kN) of the spring 7134 produces a continuous pressing effect, increasing the contact pressure between the positioning card plate 7020 and the angle steel 7024 by 60%, and the contact surface friction coefficient is increased from 0.15 to 0.35 (measured data).

[0042] Test items Traditional node The present invention Ultimate tensile bearing capacity 80 kN 220 kN (↑175%) Allowable lateral displacement ±3 mm ±0.5 mm (↓83%) Torsional stiffness 5000 N·m / rad 15300 N·m / rad (↑206%)

[0043] Through the three-dimensional constraint mechanism of axial pre-tightening - radial limiting - anti-torsion self-locking of the positioning member 712, stable connection under dynamic load is achieved: axially, the pre-tightening force applied by the third bolt 7122 presses the fixing plate 7126 against the positioning card plate 7020 to form an initial fixation; radially, the insertion rod 7128 is inserted into the precision fitting hole of the buffer rod 7132 to limit the horizontal displacement and allow elastic deformation; anti-torsionally, the contact surface between the plane of the fixing plate 7126 and the inner convex platform 7130 forms a couple to resist the torsional moment of the scaffolding upright. After testing, the bolt pre-tightening force loss of this structure is <5% after 100,000 cycles of load, far lower than the 30% loss rate of the traditional structure.

[0044] In one embodiment, after the angle steel 7024 is inserted into the positioning slot 7026, the limiting member 7022 provides lateral restraint to form a rigid initial fixation. The first bolt 709 applies a pre-tightening force to compress the U-shaped steel plates 705 / 706, generating an initial frictional damping to compensate for the risk of fretting wear caused by mechanical connection gaps. When the wind load is transmitted to the half-pipe fastener 700 through the scaffold upright, a 45° force transmission path is formed between the angle steel 7024 of the mechanical connection and the clamping member 702 through the triangular plate 714 to disperse stress concentration (primary buffering). The horizontal vibration energy is dissipated as heat through the relative sliding friction of the U-shaped steel plates 705 / 706 (measured friction coefficient μ≥0.3) (secondary energy dissipation). The residual vibration is filtered through the reciprocating compression of the spring 7134 (stiffness 45 N / mm) to avoid resonance (tertiary tuning). Thus, through the integrated design of the "multi-stage damping structure" (U-shaped steel plates 705 / 706 + flat steel 703 / 704 + spring 7134) and the "mechanical plug-in connection" (positioning slot 7026 + angle steel 7024 + limiting member 7022), the following is achieved: the gradual dissipation of dynamic loads: the mechanical connection provides initial stiffness, and the damping structure absorbs high-frequency vibrations to avoid the concentrated transmission of energy to the joints; the compatibility of non-destructive disassembly and high stability: the plug-in structure replaces welding, and at the same time, through the pre-tightening force of the damping member (the first bolt 709) and the three-dimensional restraint of the positioning member 712, it is ensured that the joints do not loosen under wind loads.

[0045] Data comparison of synergistic effects

[0046] In the wind tunnel test (simulated wind speed 30 m / s), compared with the traditional welded wall connecting member:

[0047] Performance indicators Traditional welding scheme The present invention (collaborative design) Improvement rate Node displacement amplitude 2.5 mm 0.7 mm 72％↓ Weld / connector fatigue life 100,000 times 500,000 times 400％↑ Disassembly and assembly time 45 minutes / time 10 minutes / time 78％↓

[0048] Through the collaborative design of the multi-stage damping structure and mechanical connection, the present invention breaks through the contradiction between "rigid connection is prone to fatigue" and "flexible connection is unstable" in traditional technologies, and has the following characteristics: high dynamic stability (wind vibration response reduced by 72%); non-destructive and rapid disassembly and assembly (construction efficiency increased by 78%); long service life and reusable (fatigue life increased by 400%).

[0049] Working principle: The main keel 50 and the secondary keel 60 are fixed by the connecting piece 80 embedded in the wall 10 to form a curtain wall support system. The vertical struts of the scaffolding 20 are connected to the support member 701 through the semi-pipe fastener 700. The positioning slot 7026 on the clamping member 702 forms a detachable plug-in connection with the angle steel 7024. The first flat steel 703, the second flat steel 704 and the U-shaped steel plates 705 / 706 damping structures in the middle at the top of the angle steel form a multi-stage shock absorption system through pre-tightening with the first bolt 709. The spring 7134 buffer mechanism of the quick positioning member 712 continuously provides an adaptive pressing force. While maintaining the stability of the scaffolding, the whole set of systems replaces traditional welding with mechanical connection, realizes quick disassembly and assembly, dynamic load buffering and angle fine-tuning of the U-shaped groove 707 hinge structure, and finally forms a curtain wall construction support system with high construction efficiency, excellent wind resistance performance and reusable characteristics.

[0050] A construction method for the wall connection structure of the external scaffolding for stone curtain wall construction, the method includes the following steps:

[0051] Step 1: Drill holes in the wall 10 at the designed spacing, usually ≤ 4m, and use chemical anchor bolts or expansion bolts as the connecting piece 80 for embedded fixation to ensure that its anchoring strength with the wall 10 meets the load requirements of the scaffolding:

[0052] Step 2: Vertically fix the main keel 50 on the wall 10 through the connecting piece 80, and correct its verticality and horizontality. Weld or bolt-connect the secondary keel 60 to the main keel 50 to form a grid-shaped support frame, and add elastic gaskets at the joints of the secondary keel 60 and the main keel 50 to reduce vibration transmission;

[0053] Step 3: Erect the external scaffolding 20 according to the specifications to ensure that the distance between the vertical struts of the upright poles and the wall meets the construction space requirements of the stone curtain wall 40. Install the semi-pipe fastener 700 on the vertical struts of the scaffolding 20 and fasten it with bolts. Weld or bolt-fix the support member 701 to the end of the semi-pipe fastener 700 to ensure its horizontality;

[0054] Step 4: Insert the angle steel 7024 into the positioning slot 7026 of the clamping member, and limit its lateral displacement through the limiting member 7022. Install a triangular reinforcing plate 714 between the angle steel 7024 and the clamping member 702 to improve the joint stiffness:

[0055] Step 5: Install the first flat steel 703 and the second flat steel 704 on the top of the angle steel 7024 in sequence, and set damping buffer structures, the first U-shaped steel plate 705, the second U-shaped steel plate 706 and the clamping block 7060 between them. Apply a pre-tightening force through the first bolt 709 to compress the laminated buffer module, and use the U-shaped groove 707 and the second bolt 711 to hinge the first flat steel 703 and the second flat steel 704 to form a connection node with adjustable angle:

[0056] Step Six: Rotate the adjustable bolt 7122 of the quick positioning member 712 to push the buffer rod 7132 against the positioning card plate 7020. The spring 7134 provides a continuous pressing force to absorb the vibration of the wind load. Check the bolt torque and weld quality of all connection nodes to ensure no looseness. Insert the vertical caulking plate 7014 into the reserved cavity 713 between the second flat steel 704 and the clamping member 702 to eliminate the installation gap;

[0057] Step Seven: Use a level to detect the overall verticality of the scaffold 20. There should be no visible deformation in the connection wall structure. During the curtain wall construction process, regularly check the bolt tightening state of the connection mechanism 70. If necessary, perform secondary locking through the adjustable bolt 7122. After the curtain wall is completed, when removing the connection mechanism 70, only loosen the clamping assembly and the quick positioning member 712, and the angle steel 7024 can be directly withdrawn from the positioning slot 7026 to achieve non-destructive disassembly.

[0058] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An external scaffolding connection structure for stone curtain wall construction, characterized in that including a wall body (10); a connecting member (80) embedded in the wall body (10); a scaffold (20); a stone curtain wall (40), a main keel (50) arranged on one side of the stone curtain wall (40), and a secondary keel (60) arranged on the main keel (50); a connecting mechanism (70) arranged on a vertical support rod in the scaffold (20) for connecting with the secondary keel (60) and supporting the stone curtain wall (40); the connecting mechanism (70) includes a half-pipe fastener (700), a support member (701) arranged at the end of the half-pipe fastener (700), a clamping member (702) arranged on the support member (701), positioning card plates (7020) symmetrically arranged on the clamping member (702), a positioning slot (7026) formed on the positioning card plate (7020), an angle steel (7024) inserted and installed in the positioning slot (7026), a first flat steel (703) and a second flat steel (704) sequentially installed on the top of the angle steel (7024), a damping member arranged between the first flat steel (703) and the second flat steel (704), and a positioning member (712) arranged at the end of the clamping member (702).

2. The external scaffolding connection structure for stone curtain wall construction according to claim 1, characterized in that, The damping member includes a first U-shaped steel plate (705) and a second U-shaped steel plate (706), a clamping block (7060) for connecting with the first U-shaped steel plate (705) is arranged at the bottom of the second U-shaped steel plate (706), and reinforcing plates (708) are arranged at both the upper and lower ends of the first U-shaped steel plate (705).

3. The external scaffolding connection structure for stone curtain wall construction according to claim 2, characterized in that, A first bolt (709) for applying a pre-tightening force is arranged at the top of the first flat steel (703).

4. The connecting wall structure of the external scaffolding for stone curtain wall construction according to claim 1, characterized in that, U-shaped grooves (707) are formed at one end of both the first flat steel (703) and the second flat steel (704), a second bolt (711) passing through the U-shaped groove (707) and connecting the first flat steel (703) and the second flat steel (704), and an upper clamping plate (710) arranged between the second bolt (711) and the U-shaped groove (707).

5. The external scaffolding connection structure and construction method for stone curtain wall construction according to claim 1, characterized in that, A first transverse plate (7010) and a second transverse plate (7012) for supporting the first flat steel (703) and the second flat steel (704) are arranged on one side surface of the support member (701), and a vertical caulking plate (7014) is arranged at the bottom of the second transverse plate (7012).

6. The external scaffolding tie-in structure for stone curtain wall construction according to claim 5, characterized in that, A reserved cavity (713) for installing the vertical caulking plate (7014) is reserved between the second flat steel (704) and the clamping member (702).

7. The connecting wall structure of the external scaffolding for stone curtain wall construction according to claim 1, characterized in that, Limiters (7022) for limiting the angle steel (7024) are arranged on both side edges of the clamping member (702).

8. The external scaffolding connection structure for stone curtain wall construction according to claim 1, characterized in that, On one side of the positioning member (712), there is a third bolt (7122), concealed holes (7124) symmetrically formed on both sides of the third bolt (7122), a fixing plate (7126) provided at one end of the third bolt (7122), a plug rod (7128) provided on the front end face of the fixing plate (7126), an inner boss (7130) provided inside the concealed hole (7124), a buffer rod (7132) movably provided inside the concealed hole (7124), a spring (7134) sleeved on the outer periphery of the buffer rod (7132), and one end of the spring (7134) contacts the inner boss (7130), so that the buffer rod (7132) moves back and forth.

9. The connecting structure between the external scaffolding and the wall for the construction of a stone curtain wall according to claim 1, characterized in that, A triangular plate (714) is provided between the angle steel (7024) and the clamping member (702).

10. A construction method for the connection structure between the external scaffolding and the wall in the construction of a stone curtain wall, characterized in that, Including an external scaffolding connecting wall structure for stone curtain wall construction according to any one of claims 2-9, the method includes the following steps: Step 1: Drill holes in the wall (10) at the designed spacing (usually ≤ 4m), and use chemical anchor bolts or expansion bolts as connectors (80) for embedded fixation to ensure that their anchoring strength with the wall (10) meets the load requirements of the scaffolding: Step 2: Vertically fix the main keel (50) to the wall (10) through the connector (80), and correct its verticality and horizontality. Weld or bolt-connect the secondary keel (60) to the main keel (50) to form a grid-shaped support frame, and add elastic gaskets at the joints of the secondary keel (60) and the main keel (50) to reduce vibration transmission; Step 3: Erect the external scaffolding (20) according to the specifications to ensure that the distance between the vertical poles (vertical support rods) and the wall meets the construction space requirements of the stone curtain wall (40). Install semi-tube fasteners (700) on the vertical support rods of the scaffolding (20), and fasten them with bolts. Weld or bolt-fix the support member (701) to the end of the semi-tube fastener (700) to ensure its horizontality; Step 4: Insert the angle steel (7024) into the positioning slot (7026) of the clamping member, and limit its lateral displacement through the limiting member (7022). Install a triangular reinforcing plate (714) between the angle steel (7024) and the clamping member (702) to improve the joint stiffness: Step 5: Install the first flat steel (703) and the second flat steel (704) in sequence on the top of the angle steel (7024). A damping buffer structure (the first U-shaped steel plate 705, the second U-shaped steel plate 706 and the clamping block 7060) is provided between them. Apply a pre-tightening force through the first bolt (709) to compress the laminated buffer module. Use the U-shaped groove (707) and the second bolt (711) to hinge the first flat steel (703) and the second flat steel (704) to form a connection node with adjustable angle: Step 6: Rotate the adjustable bolt (7122) of the quick positioning member (712), push the buffer rod (7132) to press against the positioning card plate (7020), and the spring (7134) provides a continuous pressing force to absorb the vibration of the wind load. Check the bolt torque and weld quality of all connection nodes to ensure no looseness. Insert a vertical caulking plate (7014) into the reserved cavity (713) between the second flat steel (704) and the clamping member (702) to eliminate the installation gap. Step 7: Use a level to detect the overall verticality of the scaffolding (20). The wall connection structure should have no visible deformation to the naked eye. During the curtain wall construction process, regularly check the bolt tightening status of the connection mechanism (70). If necessary, perform secondary locking through the adjustable bolt (7122). After the curtain wall is completed, when removing the connection mechanism (70), only loosen the clamping assembly and the quick positioning member (712), and the angle steel (7024) can be directly withdrawn from the positioning slot (7026) to achieve damage-free disassembly.

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