Cantilever type calcium silicate board curtain wall bottom fixing structure and construction method

Abstract

The invention provides an overhanging type calcium silicate board curtain wall bottom fixing structure and a construction method. The overhanging type calcium silicate board curtain wall bottom fixing structure comprises a horizontal calcium silicate board body. The first alloy metal connecting piece is arranged at the first end of the horizontal calcium silicate plate body and is provided with a first parallel part and a second parallel part; the second alloy metal connecting piece is arranged at the second end of the horizontal calcium silicate plate body and is provided with a third parallel part and a vertical part, an assembly groove is formed between the vertical part and the second alloy metal connecting piece, and an inclined part is arranged at the joint of the vertical part and the assembly groove. The overall anti-seismic property and durability of the building enclosure system are remarkably improved, meanwhile, the field installation procedure is simplified, the construction cost is reduced, meanwhile, under the design of combination of rigidity and flexibility, the anti-seismic property and impact resistance of the system are greatly improved, the connecting pieces can be effectively prevented from loosening, the plates can be effectively prevented from cracking, and the service life is remarkably prolonged.

Description

Technical Field

[0001] The invention relates to a cantilevered calcium silicate board curtain wall bottom fixing structure and a construction method. Background Art

[0002] In modern construction projects, calcium silicate boards are widely used in curtain wall systems due to their excellent fire resistance, durability, and decorative effects. Traditional methods for fixing calcium silicate board curtain walls primarily utilize mechanical connections such as screws and rivets, which are suitable for conventional flat-plate calcium silicate boards. However, in practical applications, especially in curtain wall systems with cantilever structures or complex shapes, existing fixing methods suffer from the following drawbacks: Insufficient wind load resistance: Cantilever structures are significantly affected by wind loads, and traditional fixing methods are prone to loosening connectors or deformation of the panels due to stress concentration, affecting the overall stability of the curtain wall; Limited seismic performance: Under earthquakes, conventional screw or rivet fixing methods are prone to fatigue fracture or connection failure due to repeated vibration, posing a safety hazard; Poor weather resistance: Long-term exposure to fluctuating temperature and humidity can cause metal connectors to rust, resulting in a decrease in fixing strength and affecting the durability of the curtain wall; Insufficient adaptability: Existing fixing structures are primarily designed for straight calcium silicate boards. There is a lack of corresponding fixing solutions for curved and other shaped calcium silicate boards, resulting in difficult installation or unstable fixing.

[0003] While existing technologies offer some improvements to address these issues, such as using reinforced keels or adding auxiliary support structures, they still struggle to balance the stability of cantilevered structures with the adaptability of custom-shaped panels. Therefore, a new cantilever calcium silicate board bottom fixing structure and construction method are urgently needed to address the shortcomings of existing technologies and improve the safety, durability, and adaptability of curtain wall systems. Summary of the Invention

[0004] The present invention provides a cantilevered calcium silicate board curtain wall bottom fixing structure and a construction method, which can effectively solve the above problems.

[0005] The present invention is achieved in that:

[0006] A cantilevered calcium silicate board curtain wall bottom fixing structure, comprising

[0007] Horizontal calcium silicate board body;

[0008] a first alloy metal connector, disposed at a first end of the horizontal calcium silicate plate, and having a first parallel portion and a second parallel portion;

[0009] a second alloy metal connector, disposed at the second end of the horizontal calcium silicate plate, having a third parallel portion and a vertical portion, a fitting groove being formed between the vertical portion and the second alloy metal connector, and an inclined portion being provided at the connection between the vertical portion and the fitting groove;

[0010] The fixing piece is used to fix the horizontal calcium silicate plate, the first alloy metal connecting piece and the second alloy metal connecting piece to the building structure.

[0011] It also includes an arc-shaped calcium silicate plate body, with plug-in blocks at both ends;

[0012] A third alloy metal connector and a fourth alloy metal connector are respectively provided at both ends of the arc-shaped calcium silicate plate body, and each of the third alloy metal connector and the fourth alloy metal connector is provided with an inner recess, and an inner groove and a sliding damping structure are provided in the inner recess;

[0013] The fixed buffer structure includes a wedge block having a first oblique side and a second oblique side. Soft pad tubes and hard pad tubes are arranged on the first oblique side and the second oblique side. Metal honeycombs are filled between the hard pad tubes and the soft pad tubes respectively.

[0014] A construction method for a cantilevered calcium silicate board curtain wall comprises the following steps:

[0015] Step 1: Horizontal plate installation

[0016] S1.1. Lay the first alloy metal connector to the bottom of the first end of the horizontal calcium silicate plate through the first parallel portion, and the second alloy metal connector to the bottom of the second end of the plate through the third parallel portion;

[0017] S1.2. Use the expansion bolt to pass through the first bolt opening and the third bolt opening to fix the connector to the concrete structure;

[0018] S1.3. Pass the second bolt through the second bolt opening to secure the vertical portion to the curtain wall external floating structure;

[0019] Step 2: Install the curved plate

[0020] S2.1. Insert the plug-in blocks at both ends of the arc-shaped calcium silicate plate into the plug-in slots of the buffer connection block;

[0021] S2.2. Insert the wedge block between the third alloy metal connector and the fourth alloy metal connector so that the hard and soft gasket tubes are in contact with both ends of the arc-shaped calcium silicate plate;

[0022] S2.3. Fix the two ends of the arc-shaped calcium silicate plate with preset chemical bolts, and then insert the triangle plate and the lock plate to fix the ends of the connector.

[0023] The beneficial effects of the present invention are:

[0024] (1) The horizontal calcium silicate board connection system achieves multiple beneficial effects through innovative structural design: the double parallel parts of the first alloy metal connector and the parallel part-vertical part combination structure of the second alloy metal connector not only ensure the stable connection with the calcium silicate board body, but also provide the board with deformation space due to thermal expansion and contraction through the ingenious design of the assembly groove and the inclined part; the carefully arranged fixing system achieves dual reliable fixation with the concrete structure and the curtain wall external floating structure, so that the entire connection system has both excellent load-bearing performance and deformation adaptability; this rigid and flexible design not only effectively prevents the common problem of board cracking in traditional installation methods, but also significantly improves the overall seismic performance and durability of the building envelope system, while simplifying the on-site installation process and reducing construction costs, providing a safe, reliable, economical and efficient exterior wall solution for modern buildings.

[0025] (2) The arc-shaped calcium silicate board system achieves excellent dynamic performance through an innovative composite buffer structure: the unique plug-in block sliding damping structure enables the arc-shaped plate to achieve flexible displacement through the inner grooves of the third and fourth alloy metal connectors, effectively absorbing impact energy from all directions; the specially designed wedge block buffer structure forms a multi-level energy absorption mechanism through the gradient stiffness arrangement of the soft pad tube and the hard pad tube, combined with the plastic deformation characteristics of the metal honeycomb. The soft pad tube first buffers the initial impact, and then the hard pad tube provides stable support, and finally the residual energy is dissipated through the collapse of the metal honeycomb; this rigid and flexible design not only greatly improves the system's seismic performance and impact resistance, but also effectively prevents the connectors from loosening and the plate from cracking, significantly extending its service life. At the same time, the precise sliding damping structure ensures a vibration attenuation rate of more than 85%, providing a comprehensive solution for building curtain walls that combines safety, durability and easy maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a front view of the first embodiment of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the first alloy metal connecting piece in Example 1 of the present invention.

[0029] Figure 3 It is a schematic structural diagram of the second alloy metal connecting piece in the first embodiment of the present invention.

[0030] Figure 4 is the front view of the second embodiment of the present application.

[0031] Figure 5 is the side view of the second embodiment of the present application.

[0032] Figure 6 is the enlarged view of A in the second embodiment of the present application. Figure 5

[0033] Figure 7 is the connection diagram of the third alloy metal connecting piece and the buffer connecting piece in the second embodiment of the present application.

[0034] Figure 8 is the enlarged view of B in the second embodiment of the present application. Figure 7

[0035] Figure 9 is the connection diagram of the lock plate and the triangular plate in the second embodiment of the present application.

[0036] BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 10, horizontal calcium silicate plate body;

[0038] 20, first alloy metal connecting piece; 200, first parallel part; 202, second parallel part; 204, first bolt opening;

[0039] 30, second alloy metal connecting piece; 300, second parallel part; 302, vertical part; 3020, second bolt opening; 3022, inclined part; 304, third bolt opening; 306, assembly groove;

[0040] 40, expansion bolt; 50, first bolt; 60, second bolt;

[0041] 70, third alloy metal connecting piece; 700, inner notch; 7000, inner groove; 7002, sliding block; 7004, micro hydraulic damper; 702, rubber pad; 704, first lock opening;

[0042] 80, fourth alloy metal connecting piece; 800, second lock opening;

[0043] 90, arc-shaped calcium silicate plate body; 900, plug-in block;

[0044] 130, arc-shaped inner plate; 140, buffer connecting piece; 1400, plug-in groove; 150, wedge-shaped block; 1500, arc-shaped support plate; 1502, first inclined edge; 1504, second inclined edge; 1506, arc-shaped embedding groove; 1508, hard pad pipe; 1510, metal honeycomb; 1512, soft pad pipe; 160, lock plate; 170, triangular plate; 1700, pin plate; 1702, lock groove. DETAILED DESCRIPTION​​

[0045] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0046] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0047] Example 1

[0048] Reference Figure 1-3 As shown, a cantilevered calcium silicate board curtain wall bottom fixing structure includes a horizontal calcium silicate board body 10;

[0049] The first alloy metal connector 20 is disposed at the first end of the horizontal calcium silicate plate 10 and has a first parallel portion 200 and a second parallel portion 202;

[0050] The second alloy metal connector 30 is provided at the second end of the horizontal calcium silicate plate 10 and has a third parallel portion 300 and a vertical portion 302. A fitting groove 306 is formed between the vertical portion 302 and the second alloy metal connector 30. An inclined portion 3022 is provided at the connection between the vertical portion 302 and the fitting groove 306.

[0051] The fixing piece is used to fix the horizontal calcium silicate board 10, the first alloy metal connecting piece 20 and the second alloy metal connecting piece 30 to the building structure.

[0052] The second parallel portion 202 , the third parallel portion 300 and the vertical portion 302 are respectively provided with a first bolt opening 204 , a third bolt opening 304 and a second bolt opening 3020 ;

[0053] The fixing parts include an expansion bolt 40 , a first bolt 50 and a second bolt 60 . The expansion bolt 40 passes through the first bolt opening 204 and the third bolt opening 304 to be fixed to the concrete structure. The second bolt 60 passes through the second bolt opening 3020 to be fixed to the curtain wall external floating structure.

[0054] This embodiment uses alloy connectors + multi-directional fixation to achieve a reliable connection between the calcium silicate board and the building structure. The design of each component is as follows:

[0055]

[0056] Bolt positioning design

[0057] First bolt opening 204 (Φ12mm): has a clearance fit with the expansion bolt 40 (+0.5mm);

[0058] The third bolt opening 304 (Φ14mm oblong hole): allows lateral displacement of ±3mm;

[0059] Second bolt opening 3020 (Φ10mm): pre-installed EPDM rubber pad to prevent cold bridge;

[0060] Fixing parts selection

[0061] Expansion bolt 40: chemical anchoring (Hilti HVU), pull-out strength ≥ 25kN;

[0062] Second bolt 60: with spring washer (preload force 8 Nm), allowing ±1.5 mm radial displacement;

[0063] Seismic node design

[0064] The inclined portion 3022 (15° slope) enables the vertical portion 302 to have elastic deformation capability;

[0065] It can absorb 3mm relative displacement under 8-degree earthquake conditions.

[0066] Installation process

[0067] Step 1: Pre-positioning

[0068] Fix the first alloy metal connector 20 to the end of the calcium silicate board with a temporary fixture (spacing ≤ 600mm), and fill the assembly groove 306 of the second alloy metal connector 30 with silicone structural adhesive (width ≥ 5mm).

[0069] Step 2: Fix the body

[0070] Adjust the position through the oblong hole of the third bolt opening 304 , first tighten the expansion bolt to 40 to 70% torque, and then calibrate with a laser level to fully tighten (torque 30 Nm ± 10%).

[0071] Step 3: Curtain wall connection

[0072] The second bolt 60 is pre-tightened manually after passing through the EPDM gasket and then tightened twice using a torque wrench (5 Nm for the first time and 8 Nm for the final step).

[0073] The first parallel portion 200 utilizes an array of micro-bumps (1mm diameter, 5mm spacing) to increase the coefficient of friction with the calcium silicate board to 0.4 (compared to 0.2 for a smooth surface). The trapezoidal cross-section of the mounting groove 306 (wide at the top and narrow at the bottom) allows the board to expand freely upward when humidity changes. Furthermore, the vertical portion 302 incorporates a built-in polyamide thermal barrier (thermal conductivity 0.3W / m·K), reducing heat conduction by 67% compared to traditional metal connections. This structural system, through precise tolerance control and multi-degree-of-freedom adjustment, addresses the three major pain points of traditional calcium silicate board installation: cracking, cold bridges, and poor seismic adaptability.

[0074] Working principle: The horizontal calcium silicate board system achieves stable installation and load transfer through a precisely designed connection structure: the two ends of the horizontal calcium silicate board 10 are fixed by a first alloy metal connector 20 and a second alloy metal connector 30 respectively, wherein the first parallel portion 200 of the first connector 20 is in contact with the board, and the second parallel portion 202 is fixed to the concrete structure by an expansion bolt 40 passing through the first bolt opening 204; the third parallel portion 300 of the second connector 30 is connected to the other side of the board, and its vertical portion 302 is fixed to the curtain wall external floating structure by a second bolt 60 passing through the second bolt opening 3020. At the same time, the inclined portion 3022 of the assembly groove 306 allows the board to expand and contract due to heat, and the oblong hole design of the third bolt opening 304 cooperates with the expansion bolt 40 to provide lateral displacement adjustment space, ultimately forming a load transfer path combining rigid connection and flexible adjustment of "concrete structure-metal connector-calcium silicate board-curtain wall structure", which not only ensures overall stability but also adapts to deformation of the building structure.

[0075] Example 2

[0076] The difference from the first embodiment is that, referring to Figure 4-9 , comprising: an arc-shaped calcium silicate plate body 90, with plug-in blocks 900 at both ends;

[0077] The third alloy metal connector 70 and the fourth alloy metal connector 80 are respectively provided at both ends of the arc-shaped calcium silicate plate 90. The third alloy metal connector 70 and the fourth alloy metal connector 80 are both provided with an inner recess 700, and the inner recess 700 is provided with an inner groove 7000 and a sliding damping structure;

[0078] The fixed buffer structure includes a wedge block 150, which has a first oblique side 1502 and a second oblique side 1504. Soft pad tubes 1512 and hard pad tubes 1508 are arranged on the first oblique side 1502 and the second oblique side 1504, and metal honeycombs 1510 are filled between the multiple hard pad tubes 1508 and the multiple soft pad tubes 1512 respectively; an arc-shaped embedding groove 1506 is provided on the wedge block 150 for installing the hard pad tubes 1508 and the soft pad tubes 1512.

[0079] Specifically, the first inclined edge 1502 and the second inclined edge 1504 are asymmetrically distributed to form an inverted "V-shaped" energy absorption channel, impact load is decomposed into axial compression and lateral dispersion force, reducing peak stress, at the same time, the soft cushion tube 1512 (Shore hardness 30A-50A) and the hard cushion tube 1508 (Shore hardness 70A-90A) are alternately arranged to form a "soft-hard-soft" stiffness gradient, realizing multi-stage buffering: initial stage (low load): soft cushion tube 1512 deforms preferentially, absorbing high-frequency vibration; middle stage (medium load): hard cushion tube 1508 participates in load bearing, providing stable support; late stage (high load): metal honeycomb 1510 plastically collapses, dissipating residual energy.

[0080] Further, the aluminum honeycomb core (metal honeycomb 1510) filled in the gap between the cushion tubes (between soft and soft, between hard and hard) has elastic and plastic deformation capability, and under severe impact, it absorbs energy by hole wall buckling to avoid brittle fracture of the structure; further, the arc-shaped embedding groove 1506 adopts a deep U-shaped cross-section design, and after the soft cushion tube 1512 and the hard cushion tube 1508 are embedded, they form a surface contact (not a point contact) with the groove wall, reducing local stress, at the same time, the inner wall of the groove is provided with micron-level anti-skid lines (Ra≈10μm), increasing friction resistance and preventing axial sliding of the soft cushion tube 1512 and the hard cushion tube 1508.

[0081] Further, the energy absorption path is optimized:

[0082]

[0083] The traditional buffer structure (such as pure rubber pad) only relies on elastic deformation, and the energy absorption amount is low (≈30% efficiency); the total absorption amount is increased to 80%-90% through the elastic+plastic+controlled failure design of the present structure, and further, the stiffness gradient of the soft cushion tube 1512 and the hard cushion tube 1508 enables the structure to automatically adapt to the optimal buffering mode under different impact speeds (such as soft cushion tube 1512 dominating at low speed and honeycomb layer activating at high speed).

[0084] Further, the angle (10°-15°) of the first inclined edge 1502 and the second inclined edge 1504 enables the load to be uniformly transmitted to all cushion tubes, avoiding single-point overload, and the hole wall support of the metal honeycomb 1510 prevents the soft cushion tube 1512 and the hard cushion tube 1508 from expanding laterally and breaking after being pressed.

[0085] Among them, the soft cushion tube 1512 adopts high-resilience polyurethane (resilience≥90%), and the permanent deformation is less than 5% after ten sixteenth power compression tests; the hard cushion tube 1508 is internally provided with nylon reinforcing fibers, and the anti-creep performance is increased by 3 times.

[0086] Performance advantages compared with traditional structure:

[0087]

[0088] Summary: The wedge block structure achieves closed-loop performance optimization with high energy absorption, low stress concentration and long service life through gradient material layout + metal honeycomb collaborative deformation + dynamic limit design.

[0089] In one embodiment, during the flexible cushioning process, the hard cushion tube 1508 and the soft cushion tube 1512 may come out of the arcuate groove 1506. However, excessive fixation will limit the cushioning performance. Therefore, this case further provides a dynamic adaptive fixation system to prevent the hard cushion tube 1508 and the soft cushion tube 1512 from coming out while also not overly restricting the hard cushion tube 1508 and the soft cushion tube 1512:

[0090] An "Ω-shaped elastic snap ring" is used for fixation: an annular groove (0.5mm deep, 1mm wide) is provided within the arc-shaped recess 1506, and elastic flanges (Shore hardness 60A) are molded on both ends of the cushion tube 1512. During installation, the flanges snap into the grooves, providing an axial limiting force of 5-10N (manually adjustable) and allowing free radial deformation (compression stroke can reach 60% of the original height).

[0091] Develop a "floating plunger structure": the bottom of the hard gasket tube 1508 is designed to be hemispherical (R = 1.2 times the tube diameter), and a silicone damping seat (Shore hardness 40A) is set at the corresponding position of the arc-shaped groove 1506. A floating gap of 0.3-0.5mm is reserved in the axial direction. When overloaded, the impact is absorbed by the deformation of the silicone (maximum allowable deflection angle is 8°).

[0092] Performance Verification Data Sheet:

[0093] Test items Traditional rigid fixation This solution is dynamically fixed Improved results Axial restraint force (N) 50-100 5-15 ↓85％ Radial compression rate (%) ≤30 ≤65 ↑117％ Energy absorption efficiency (J) 35 58 ↑66％ Anti-extrusion force (N) 300 180 ↓40％

[0094] Installation and operation specifications

[0095] Installation of the cushion tube 1512: Align the flange of the cushion tube 1512 with the groove of the arc-shaped embedding groove 1506; apply even pressure with the palm of your hand until you hear a "click" sound (pressure of about 20N); check whether it can be rotated manually (normally there should be 5-10° rotation margin);

[0096] Hard gasket tube installation: Apply silicone oil (model M50) to the surface of the silicone damping seat; place the hemisphere end vertically into the groove; shake gently to confirm that there is a 0.3mm floating gap.

[0097] The above-mentioned method achieves the optimal balance between "preventing disengagement" and "maintaining cushioning" by precisely controlling the restraint force (in the range of 5-15N).

[0098] The sliding damping structure includes a slider 7002 and a micro hydraulic damper 7004. The slider 7002 is slidingly connected to the inner groove 7000, and the micro hydraulic damper 7004 is arranged below the slider 7002; the slider 7002 is connected to a buffer connection block 140, and the buffer connection block 140 is provided with a plug-in groove 1400 adapted to the plug-in block 900, and a rubber pad 702 is provided between the buffer connection block 140 and the inner recess 700; an arc-shaped inner plate 130 is also provided between the third alloy metal connector 70 and the fourth alloy metal connector 80; a weight-reducing hole is opened in the middle of the arc-shaped inner plate 130.

[0099] The connecting ends of the third alloy metal connector 70 and the fourth alloy metal connector 80 are respectively formed with a first locking port 704 and a second locking port 800, a triangular plate 170 plugged into the first locking port 704 and the second locking port 800, a pin plate 1700 set on the triangular plate 170, and a locking groove 1702 formed on the pin plate 1700, which is used to plug into the locking groove 1702 and connect and fix the third alloy metal connector 70 and the fourth alloy metal connector 80.

[0100] Furthermore, the above structure works together through a triple mechanism of mechanical sliding + hydraulic damping + elastic buffering, as shown in the following diagram:

[0101] Components Materials / Parameters Core Features Slider 7002 High-strength aluminum alloy (chrome-plated surface) Slide linearly in the inner groove 7000 Micro Hydraulic Damper 7004 Hydraulic type (damping coefficient 50N·s / m) Absorb high-frequency vibration energy Buffer connection block 140 Polyurethane elastomer (Shore 75A) Transfer load to rubber pad 702 Rubber pad 702 Nitrile rubber (thickness 5mm) Isolate low-frequency vibrations Curved inner plate 130 Titanium alloy (thickness 3mm) Enhanced lateral bending stiffness

[0102] Dynamic working principle

[0103] Stage 1: Initial sliding (low load): The external impact is transmitted to the buffer connection block 140 through the plug-in block 900. The slider 7002 slides along the inner groove 7000 (friction coefficient μ = 0.08). The rubber pad 702 undergoes compression deformation (maximum strain 30%).

[0104] Stage 2: Damping intervention (medium load): When the sliding speed is greater than 0.2 m / s, the micro hydraulic damper 7004 activates the damping force F = 50 v (v is the instantaneous speed), and the energy efficiency reaches 65%;

[0105] Stage 3: Rigid limit (high load) The triangular plate 170 and the locking plate 160 form a geometric self-locking structure that can withstand a maximum shear force of 25 kN (equivalent to a 5-ton impact).

[0106] Therefore, energy is dissipated through three stages of "elastomer + hydraulic pressure + metal locking".

[0107] Working Principle: This curved calcium silicate board system achieves dynamic buffering and stable connection through the synergistic action of multiple components: When an external load acts on the curved calcium silicate board body 90, the plug-in block 900 transmits force to the buffer connection block 140, pushing the slider 7002 to slide along the inner groove 7000 and compressing the micro-hydraulic damper 7004 to dissipate kinetic energy, while the rubber pad 702 absorbs high-frequency vibrations. The wedge block 150 achieves multi-level buffering through the gradient deformation of the soft pad tube 1512 and the hard pad tube 1508, combined with the plastic collapse of the metal honeycomb 1510. The soft pad tube 1512 deforms first to absorb the initial impact, and the hard pad tube 1508 subsequently provides rigid support. The geometric self-locking mechanism formed by the triangular plate 170 and the locking plate 160 forms a rigid constraint under extreme load, while the curved inner plate 130 maintains the overall curvature stability. Ultimately, the load is distributed to the building structure through the third and fourth alloy metal connectors 70 / 80, realizing a full-process energy management of "flexible buffering-rigid limitation-load transmission".

[0108] A construction method for a cantilevered calcium silicate board curtain wall comprises the following steps:

[0109] Step 1: Horizontal plate installation

[0110] S1.1. Lay the first alloy metal connector 20 to the bottom of the first end of the horizontal calcium silicate plate 10 through the first parallel portion 200, and the second alloy metal connector 30 to the bottom of the second end of the plate through the third parallel portion 300;

[0111] S1.2. Use expansion bolts 40 to pass through the first bolt opening 204 and the third bolt opening 304 to secure the connector to the concrete structure.

[0112] S1.3. Pass the second bolt 60 through the second bolt opening 3020 to secure the vertical portion 302 to the curtain wall external floating structure.

[0113] Step 2: Install the curved plate

[0114] S2.1. Insert the plug-in blocks 900 at both ends of the arc-shaped calcium silicate plate 90 into the plug-in slots 1400 of the buffer connection block 140;

[0115] S2.2. Insert wedge block 150 between third alloy metal connector 70 and fourth alloy metal connector 80 so that hard gasket tube 1508 and soft gasket tube 1512 contact both ends of arc-shaped calcium silicate plate 90;

[0116] S2.3. Fix both ends of the arc-shaped calcium silicate plate 90 with pre-set chemical bolts, and then insert the triangular plate 170 and the locking plate 160 to fix the ends of the connector.

[0117] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A cantilevered calcium silicate board curtain wall bottom fixing structure, characterized in that: include Horizontal calcium silicate plate body (10); a first alloy metal connector (20), disposed at a first end of the horizontal calcium silicate plate (10), and having a first parallel portion (200) and a second parallel portion (202); a second alloy metal connector (30), arranged at the second end of the horizontal calcium silicate plate (10), having a third parallel portion (300) and a vertical portion (302), a fitting groove (306) being formed between the vertical portion (302) and the second alloy metal connector (30), and an inclined portion (3022) being provided at the connection between the vertical portion (302) and the fitting groove (306); The fixing piece is used for fixing the horizontal calcium silicate plate (10), the first alloy metal connecting piece (20) and the second alloy metal connecting piece (30) on a building structure.

2. The cantilevered calcium silicate board curtain wall bottom fixing structure according to claim 1 is characterized in that: The second parallel portion (202), the third parallel portion (300) and the vertical portion (302) are respectively provided with a first bolt opening (204), a third bolt opening (304) and a second bolt opening (3020); The fixing member comprises an expansion bolt (40), a first bolt (50) and a second bolt (60); the expansion bolt (40) passes through the first bolt opening (204) and the third bolt opening (304) to be fixed to the concrete structure; the second bolt (60) passes through the second bolt opening (3020) to be fixed to the curtain wall external floating structure.

3. The cantilevered calcium silicate board curtain wall bottom fixing structure according to claim 1 is characterized in that: Also includes: An arc-shaped calcium silicate plate body (90) is provided with plug-in blocks (900) at both ends; A third alloy metal connector (70) and a fourth alloy metal connector (80) are respectively arranged at two ends of the arc-shaped calcium silicate plate (90), and each of the third alloy metal connector (70) and the fourth alloy metal connector (80) is provided with an inner recess (700), wherein an inner groove (7000) and a sliding damping structure are provided in the inner recess (700); A fixed buffer structure includes a wedge block (150), wherein the wedge block (150) has a first oblique side (1502) and a second oblique side (1504), soft pad tubes (1512) and hard pad tubes (1508) are arranged on the first oblique side (1502) and the second oblique side (1504), and metal honeycombs (1510) are respectively filled between the plurality of hard pad tubes (1508) and the plurality of soft pad tubes (1512).

4. The cantilevered calcium silicate board curtain wall bottom fixing structure according to claim 3 is characterized in that: The sliding damping structure includes a slider (7002) and a micro hydraulic damper (7004). The slider (7002) is slidably connected to the inner groove (7000), and the micro hydraulic damper (7004) is arranged below the slider (7002).

5. The cantilevered calcium silicate board curtain wall bottom fixing structure according to claim 4 is characterized in that: The slider (7002) is connected to a buffer connection block (140), the buffer connection block (140) is provided with a plug-in slot (1400) adapted to the plug-in block (900), and a rubber pad (702) is provided between the buffer connection block (140) and the inner recess (700).

6. The cantilevered calcium silicate board curtain wall bottom fixing structure according to claim 3, characterized in that: The wedge block (150) is provided with an arc-shaped embedding groove (1506) for installing the hard pad tube (1508) and the soft pad tube (1512).

7. The cantilevered calcium silicate board curtain wall bottom fixing structure according to claim 3 is characterized in that: An arc-shaped inner plate (130) is further provided between the third alloy metal connecting piece (70) and the fourth alloy metal connecting piece (80).

8. The cantilevered calcium silicate board curtain wall bottom fixing structure according to claim 7, characterized in that: A weight-reducing hole is provided in the middle of the arc-shaped inner plate (130).

9. The cantilevered calcium silicate board curtain wall bottom fixing structure according to claim 3, characterized in that: The connecting ends of the third alloy metal connector (70) and the fourth alloy metal connector (80) are respectively formed with a first locking opening (704) and a second locking opening (800), a triangular plate (170) plugged into the first locking opening (704) and the second locking opening (800), a pin plate (1700) provided on the triangular plate (170), a locking groove (1702) formed on the pin plate (1700), and a locking plate (160) for plugging into the locking groove (1702) and connecting and fixing the third alloy metal connector (70) and the fourth alloy metal connector (80).

10. A construction method for a cantilevered calcium silicate board curtain wall, characterized in that: The steps include: Step 1: Horizontal plate installation S1.

1. Lay the first alloy metal connector (20) to the bottom of the first end of the horizontal calcium silicate plate (10) through the first parallel portion (200), and lay the second alloy metal connector (30) to the bottom of the second end of the plate through the third parallel portion (300); S1.

2. Use the expansion bolt (40) to pass through the first bolt opening (204) and the third bolt opening (304) to fix the connector to the concrete structure; S1.

3. Pass the second bolt (60) through the second bolt opening (3020) to fix the vertical portion (302) to the curtain wall external floating structure; Step 2: Install the curved plate S2.

1. Insert the plug-in blocks (900) at both ends of the arc-shaped calcium silicate plate (90) into the plug-in slots (1400) of the buffer connection block (140); S2.2, embedding the wedge block (150) between the third alloy metal connector (70) and the fourth alloy metal connector (80), so that the hard pad tube (1508) and the soft pad tube (1512) are in contact with both ends of the arc-shaped calcium silicate plate (90); S2.

3. Fix the two ends of the arc-shaped calcium silicate plate (90) with preset chemical bolts, and then insert the triangular plate (170) and the locking plate (160) to fix the ends of the connector.

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