Cantilever structure supporting system with multi-stage supporting optimization design

Abstract

The invention discloses a multi-stage support optimized design cantilever structure supporting system and a construction method thereof. The multi-stage support optimized design cantilever structure supporting system comprises four stages of supporting structures, wherein a first-stage support is composed of 20 # I-shaped steel and serves as a main bearing component; the second-stage support adopts 18 # I-shaped steel and is used for transmitting and dispersing loads; the third-stage support adopts a high-strength aluminum alloy adjustable support rod, so that accurate height adjustment is realized; the fourth-stage support is composed of carbon fiber composite inhaul cables, and extra safety guarantee is provided. The supports are connected with one another through the high-strength bolts, the spherical joints and the special anchoring parts to form an integral structure. The construction method of the system comprises the steps that the first-stage support is installed, the second-stage support is connected, the height of the third-stage support is adjusted, and the fourth-stage safety inhaul cable is fixed. By means of the design, the bearing capacity of the cantilever structure is remarkably improved, and the bearing capacity of each stage of supporting is 50 kN / m, 40 kN / m, 30 kN / m and 20 kN / m. The method is high in bearing capacity, high in adaptability, safe, reliable and suitable for cantilever structure construction in various complex building environments.

Description

Technical Field

[0001] The invention relates to a cantilever structure support system with multi-level support optimization design and a construction method thereof, belonging to the technical field of building engineering construction. Background Art

[0002] In the construction of building projects, cantilever structures are common design elements, and the design and construction of their support systems directly affect the quality and safety of the entire project. Traditional cantilever structure support systems usually use floor-standing external scaffolding, which is erected from the basement ceiling or the ground. This method has many problems: first, the external scaffolding is high, has poor stability, is prone to deformation, and is difficult to control the construction quality; second, it requires a large amount of materials and manpower, resulting in serious waste of resources; third, the erection and dismantling process is cumbersome, which prolongs the construction period. Therefore, it is necessary to develop a new cantilever structure support system to solve the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a cantilever structure support system with a multi-level support optimization design and a construction method thereof, aiming to overcome the defects existing in the prior art, improve construction efficiency and quality, reduce resource consumption, and shorten the construction period.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A cantilever structure support system with a multi-level support optimization design, comprising a first-level support (1), a second-level support (2), a third-level support (3) and a fourth-level support (4), characterized in that: the first-level support (1) is composed of 20# I-beam, with a height of 250mm and a flange width of 100mm, and is used as a main load-bearing component; the second-level support (2) is composed of 18# I-beam, with a height of 180mm and a flange width of 90mm, and is used to transmit and disperse loads; the third-level support (3) is composed of a high-strength aluminum alloy adjustable support rod, with a diameter of 80mm and a length adjustable within a range of 1000-1500mm; the fourth-level support (4 ) is composed of a carbon fiber composite cable with a diameter of 20 mm; the first-level support (1) and the second-level support (2) are connected by at least 4 M20 high-strength bolts (5) at each connection point; the second-level support (2) and the third-level support (3) are connected by an adjustable ball joint (6); the third-level support (3) and the fourth-level support (4) are connected by a specially designed carbon fiber anchor (7); the fourth-level support (4) and the building structure are connected by a combination of embedded parts (8) and post-anchor bolts (9); the system also includes an adjustment device (10) arranged on the third-level support (3) for accurately adjusting the support height.

[0006] Furthermore, the first-level support (1) is composed of the following components: a main body 20# I-beam (1-1) with a height of 250 mm and a flange width of 100 mm; an end reinforcement plate (1-2) with a thickness of 20 mm and the same width as the flange of the I-beam; a web stiffening rib (1-3) with a thickness of 10 mm and a height of 80% of the height of the I-beam; a connecting flange plate (1-4) with a thickness of 25 mm and a diameter of 300 mm; the end reinforcement plate (1-2) is vertically welded to both ends of the main body 20# I-beam (1-1) through a full penetration weld, and the weld height is not less than 10 mm; each of the web stiffening ribs (1-3) is The flanges are arranged at equal intervals of 500 mm along the length direction of the I-beams, and are welded at a 45° angle to the web of the main 20# I-beam (1-1), using double-sided welding, with the height of each weld being not less than 8 mm; the connecting flange plate (1-4) is welded to the end of the main 20# I-beam (1-1) through an annular weld, the weld being a full penetration weld, and the thickness being equal to the thickness of the flange plate; 8 bolt holes with a diameter of 22 mm are evenly arranged on the connecting flange plate (1-4), for connection with adjacent components; the surface of the first-level support (1) is treated with anti-corrosion, using epoxy zinc-rich primer and polyurethane topcoat, with a total coating thickness of not less than 120 μm.

[0007] Furthermore, the second-level support (2) is composed of the following components: a main body 18# I-beam (2-1) with a height of 180 mm and a flange width of 90 mm; a reinforcing rib plate (2-2) with a thickness of 8 mm and a height of 160 mm; a connecting pad (2-3) with a thickness of 15 mm and a size of 150 mm×150 mm; an adjustable support seat (2-4) made of high-strength alloy steel with a diameter of 120 mm; the reinforcing rib plates (2-2) are arranged at equal intervals of 400 mm along the length direction of the main body 18# I-beam (2-1), and are vertically welded to the web of the I-beam, using double-sided welding, with the height of each weld being not less than 6 mm; the connecting pad (2-3) is connected to the main body 18# I-beam (2-1) by four M16 high-strength The adjustable support seat (2-4) is connected to the flange of the main body 18# I-beam (2-1) by a central bolt, and the bolt spacing is 100 mm; the adjustable support seat (2-4) is fixed to the connecting pad (2-3) by a central bolt, and the bolt diameter is 24 mm and the strength grade is 10.9; the adjustable support seat (2-4) is provided with a spherical groove with a diameter of 90 mm, which is used to cooperate with the ball joint (6) of the third-level support (3); the second-level support (2) and the first-level support (1) are connected at the connection point with a reinforcing steel plate (2-5), which has a thickness of 12 mm and is welded to the two-level support by a full penetration weld; the surface of the second-level support (2) is hot-dip galvanized, and the thickness of the galvanized layer is not less than 85 μm, so as to improve corrosion resistance.

[0008] Furthermore, the third-level support (3) is composed of the following components: a main body high-strength aluminum alloy tube (3-1) with an outer diameter of 80 mm, a wall thickness of 6 mm, and a material of 7075-T6 aluminum alloy; a built-in precision screw mechanism (3-2) made of high-strength stainless steel and with a pitch of 2 mm; an upper end ball joint (3-3) with a diameter of 90 mm, which cooperates with the adjustable support seat (2-4) of the second-level support (2); a lower end anchor joint (3-4) for connecting to the carbon fiber anchor (7) of the fourth-level support (4); a fine adjustment mechanism (3-5) comprising a precision gear set and a dial; the built-in precision screw mechanism (3-2) is installed inside the main body high-strength aluminum alloy tube (3-1) and is fixed by a specially designed bearing seat to achieve a length adjustment of 1000-1500 mm; the upper end ball joint (3-3 ) is connected to the upper end of the main high-strength aluminum alloy tube (3-1) through a high-strength threaded connection, and the thread length is not less than 50 mm; the lower end anchor joint (3-4) is connected to the lower end of the main high-strength aluminum alloy tube (3-1) by a wedge-shaped locking mechanism to ensure that it will not loosen under stress; the fine adjustment mechanism (3-5) is installed in the middle of the main high-strength aluminum alloy tube (3-1), and is driven by a precision gear set, and can achieve 0.1 mm precise adjustment per rotation; the surface of the third-level support (3) is anodized, and the thickness of the oxide layer is not less than 25 μm, and is coated with a polytetrafluoroethylene coating with a thickness of 50 μm to improve wear resistance and self-lubrication; the third-level support (3) is also equipped with an anti-loosening locking device (3-6) made of high-strength nylon material, which can lock the length of the support rod after the adjustment is completed.

[0009] Furthermore, the fourth-level support (4) is composed of the following components: a main carbon fiber composite cable (4-1) with a diameter of 20 mm, which is made of T700 grade carbon fiber and epoxy resin, and the fiber volume fraction is not less than 65%; an end metal sleeve (4-2) made of 316L stainless steel, with a length of 150 mm, and a tapered wedge structure inside; a tension regulator (4-3) made of high-strength aluminum alloy, which can achieve ±50 mm length fine adjustment; an anti-vibration and noise reduction device (4-4) made of nitrile rubber and installed in the middle of the cable; a stress monitoring sensor (4-5) using fiber grating technology and built into the cable; both ends of the main carbon fiber composite cable (4-1) are bonded to the end metal sleeve (4-2) by epoxy resin adhesive, the bonding length is not less than 100 mm, and the tapered wedge structure is used to form a tension regulator (4-3). The tension regulator (4-3) is installed at one end of the cable and connected to the end metal sleeve (4-2) and the carbon fiber anchor (7) through left-right threaded joints, and can achieve 1 mm precise adjustment with each rotation; the anti-vibration and noise reduction device (4-4) adopts a split design and is fixed to the cable by means of a clamp, which can effectively reduce wind-induced vibration; the stress monitoring sensor (4-5) is arranged with a measuring point every 500 mm along the length of the cable, and transmits data to the monitoring center in real time by wireless transmission; the surface of the fourth-level support (4) is coated with a fluorocarbon coating with a thickness of 100 μm to improve weather resistance and UV resistance; the connection angle between the fourth-level support (4) and the third-level support (3) can be adjusted within a range of 0°-45°, which is achieved by means of a multi-hole positioning device on the carbon fiber anchor (7).

[0010] The present invention also provides a construction method for the cantilever structure support system with the above-mentioned multi-level support optimization design, comprising the following steps:

[0011] Step 1: Arrange the first-level support (1) at the two lower floors of the cantilever structure according to the design drawings, and fix it to the main structure of the building;

[0012] Step 2: Install the second-level support (2) on the first-level support (1) and connect them via high-strength bolts (5) to ensure a stable connection;

[0013] Step 3: Connect the upper end ball joint (3-3) of the third-level support (3) to the adjustable support seat (2-4) of the second-level support (2), and adjust them to a suitable angle and length;

[0014] Step 4: Install the fourth-level support (4), connect one end of the fourth-level support (4) to the lower anchor joint (3-4) of the third-level support (3), and connect the other end to the building structure through the embedded part (8) and the post-installed anchor bolt (9);

[0015] Step 5: Debug the system, use the adjustment device (10) on the third-level support (3) to accurately adjust the support height to ensure that the entire system is evenly stressed;

[0016] Step 6: Install monitoring equipment and debug stress monitoring sensors (4-5) to ensure normal data transmission;

[0017] Step 7: Perform an overall system check to ensure that all connections are secure and components are functioning properly.

[0018] The beneficial effects of the present invention are as follows: (1) The multi-level support design improves the overall stability and bearing capacity of the system, effectively solving the problem of poor stability of the traditional cantilever structure support system; (2) The use of high-strength, lightweight materials, such as high-strength aluminum alloy and carbon fiber composite materials, greatly reduces the dead weight of the system, making it easier to construct and install; (3) An adjustable connection method is used between each level of support, which improves the adaptability and accuracy of the system and facilitates on-site commissioning and installation; (4) An integrated stress monitoring system can monitor the stress condition of the support system in real time, thereby improving construction safety; (5) Optimized design and material selection greatly reduce material usage, reduce construction costs, and also reduce environmental impact; (6) The modular design facilitates transportation and installation, significantly shortening the construction period; (7) The system is reusable, further improving economy and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The overall structural diagram of the cantilever structure support system of the multi-level support optimization design of the present invention;

[0020] Figure 2 It is a structural diagram of the first-level support;

[0021] Figure 3 It is a structural schematic diagram of the second-level support;

[0022] Figure 4 It is a structural diagram of the third-level support;

[0023] Figure 5 This is a schematic diagram of the structure of the fourth-level support;

[0024] Figure 6 It is the connection detail drawing of high strength bolts;

[0025] Figure 7 It is a structural schematic diagram of an adjustable ball joint;

[0026] Figure 8 is a schematic diagram of the structure of a carbon fiber anchor;

[0027] Fig. 9 is a schematic diagram of the structure of the regulating device;

[0028] Fig.10 Schematic diagram of the installation of stress monitoring sensors. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 As shown, the cantilever structure support system with a multi-level support optimization design provided by the present invention comprises a first-level support (1), a second-level support (2), a third-level support (3) and a fourth-level support (4). The four-level support forms a complete mechanical transmission system, which effectively transmits the load of the cantilever structure to the main structure.

[0031] like Figure 2 As shown, the first-level support (1) is composed of 20# I-beam, which is the main load-bearing component of the entire system. Its height is 250mm and the flange width is 100mm. This specification of I-beam has high bending resistance and lateral stability. The main body 20# I-beam (1-1) of the first-level support (1) is welded with end reinforcement plates (1-2) at both ends. The thickness is 20mm and the width is the same as the flange of the I-beam, which is used to enhance the end strength. Web stiffening ribs (1-3) are arranged every 500mm along the length direction of the I-beam. The thickness is 10mm and the height is 80% of the height of the I-beam, which is used to improve the torsion resistance of the I-beam. A connecting flange plate (1-4) is welded at the end of the I-beam. The thickness is 25mm and the diameter is 300mm, which is used to connect with other components. The surface of the first-level support (1) is treated with anti-corrosion, using epoxy zinc-rich primer and polyurethane topcoat, and the total coating thickness is not less than 120μm to ensure its long-term performance.

[0032] like Figure 3 As shown, the second-level support (2) is composed of 18# I-beam, with a height of 180 mm and a flange width of 90 mm, and is used to transmit and distribute loads. The main body 18# I-beam (2-1) of the second-level support (2) is provided with reinforcing ribs (2-2) every 400 mm along the length direction, with a thickness of 8 mm and a height of 160 mm, and is used to enhance the overall rigidity. A connecting pad (2-3) with a thickness of 15 mm and a size of 150 mm×150 mm is connected to the flange of the I-beam by four M16 high-strength bolts. The adjustable support seat (2-4) is fixed to the connecting pad (2-3) by a central bolt, and is used to connect to the third-level support (3). The surface of the second-level support (2) is treated with hot-dip galvanizing, and the thickness of the galvanized layer is not less than 85 μm, so as to improve corrosion resistance.

[0033] like Figure 4As shown, the third-level support (3) is composed of a high-strength aluminum alloy adjustable support rod with a diameter of 80 mm and a length that can be adjusted within a range of 1000-1500 mm. The main high-strength aluminum alloy tube (3-1) is made of 7075-T6 aluminum alloy material, with an outer diameter of 80 mm and a wall thickness of 6 mm. The built-in precision screw mechanism (3-2) is made of high-strength stainless steel with a pitch of 2 mm and is used to achieve length adjustment. The upper end ball joint (3-3) cooperates with the adjustable support seat (2-4) of the second-level support (2), and the lower end anchor joint (3-4) is used to connect the fourth-level support (4). The micro-adjustment mechanism (3-5) is installed in the middle of the main high-strength aluminum alloy tube (3-1) and is driven by a precision gear set. Each rotation can achieve a precise adjustment of 0.1 mm. The surface of the third-level support (3) is anodized and coated with a polytetrafluoroethylene coating to improve wear resistance and self-lubrication.

[0034] like Figure 5 As shown, the fourth-level support (4) is composed of a carbon fiber composite cable with a diameter of 20 mm. The main carbon fiber composite cable (4-1) is composed of T700 grade carbon fiber and epoxy resin, and the fiber volume fraction is not less than 65%. The end metal sleeve (4-2) is made of 316L stainless steel, has a length of 150 mm, and is provided with a conical wedge structure inside for fixing the cable. The tension regulator (4-3) is installed at one end of the cable to achieve ±50 mm length fine adjustment. The vibration and noise reduction device (4-4) is installed in the middle of the cable to reduce wind-induced vibration. The stress monitoring sensor (4-5) adopts fiber grating technology and is built into the cable to monitor the stress state of the cable in real time.

[0035] like Figure 6 As shown, the first-level support (1) and the second-level support (2) are connected by at least four M20 high-strength bolts (5) at each connection point. This connection method not only ensures the connection strength, but also facilitates on-site installation and adjustment.

[0036] like Figure 7 As shown, the second-level support (2) and the third-level support (3) are connected via an adjustable ball joint (6). This connection method can adapt to different installation angles, thereby improving the flexibility of the system.

[0037] like Figure 8 As shown, the third-level support (3) and the fourth-level support (4) are connected via a specially designed carbon fiber anchor (7). This anchor can effectively transmit the tension of the carbon fiber cable while avoiding stress concentration.

[0038] like Fig. 9As shown, the third-level support (3) is provided with an adjustment device (10) for accurately adjusting the support height. The adjustment device includes a precision screw mechanism and an electric drive system, and can achieve millimeter-level precision adjustment.

[0039] like Fig.10 As shown, the stress monitoring sensor (4-5) is installed inside the carbon fiber cable of the fourth-level support (4), and can monitor the stress state of the cable in real time, thereby providing guarantee for the safe operation of the system.

[0040] The construction method steps of the present invention are as follows:

[0041] 1. According to the design drawings, arrange the first-level support (1) at the two lower floors of the cantilever structure and fix it to the main structure of the building. This step requires precise positioning to ensure that the installation position and angle of the first-level support (1) meet the design requirements.

[0042] 2. Install the second-level support (2) on the first-level support (1) and connect them with high-strength bolts (5) to ensure a secure connection. During the installation process, a torque wrench needs to be used to control the tightening torque of the bolts to ensure a secure connection.

[0043] 3. Connect the upper ball joint (3-3) of the third-level support (3) to the adjustable support seat (2-4) of the second-level support (2) and adjust them to a suitable angle and length. This step needs to be fine-tuned according to the actual situation to adapt to the site conditions.

[0044] 4. Install the fourth-level support (4), connect one end of the fourth-level support (4) to the lower anchor joint (3-4) of the third-level support (3), and connect the other end to the building structure through the embedded part (8) and the post-anchor bolt (9). During the installation process, it is necessary to pay attention to controlling the prestress of the carbon fiber cable.

[0045] 5. Debug the system and use the adjustment device (10) on the third-level support (3) to accurately adjust the support height to ensure that the entire system is evenly stressed. This step requires the use of precision measuring instruments, such as a total station or a laser level, to ensure adjustment accuracy.

[0046] 6. Install monitoring equipment and debug stress monitoring sensors (4-5) to ensure normal data transmission. This step requires the participation of professional monitoring equipment debugging personnel to ensure the reliability of the monitoring system.

[0047] 7. Perform an overall system inspection to ensure that all connections are secure and all components are working properly. This step is the key to construction quality control and requires careful inspection of each connection point and key components.

[0048] The cantilever structure support system with multi-level support optimization design of the present invention effectively solves the problems existing in the traditional cantilever structure support system through reasonable structural design and material selection. The system has the characteristics of high strength, light weight, adjustability, intelligent monitoring, etc., which not only improves the construction efficiency and quality, but also reduces the construction cost and environmental impact. The application of this system will bring significant technological progress and economic benefits to the field of building engineering construction.

[0049] The above is a detailed introduction to the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A cantilever structure support system with a multi-level support optimization design, comprising a first-level support (1), a second-level support (2), a third-level support (3) and a fourth-level support (4), characterized in that: The first-level support (1) is made of 20# I-beam with a height of 250mm and a flange width of 100mm, serving as the main load-bearing component; The second-level support (2) is made of 18# I-beam, with a height of 180mm and a flange width of 90mm, and is used to transfer and distribute loads; The third-level support (3) is composed of a high-strength aluminum alloy adjustable support rod with a diameter of 80 mm and a length adjustable within the range of 1000-1500 mm; The fourth level support (4) is composed of a carbon fiber composite cable with a diameter of 20 mm; The first-level support (1) and the second-level support (2) are connected via at least four M20 high-strength bolts (5) at each connection point; The second-level support (2) and the third-level support (3) are connected via an adjustable ball joint (6); The third-level support (3) and the fourth-level support (4) are connected via a specially designed carbon fiber anchor (7); The fourth-level support (4) is connected to the building structure by combining embedded parts (8) and post-installed anchor bolts (9); The system further comprises an adjusting device (10) arranged on the third-level support (3) for precisely adjusting the support height.

2. The cantilever structure support system with multi-level support optimization design according to claim 1 is characterized in that: The first-level support (1) is composed of the following components: a main body 20# I-beam (1-1) with a height of 250mm and a flange width of 100mm; an end reinforcement plate (1-2) with a thickness of 20mm and the same width as the flange of the I-beam; a web stiffening rib (1-3) with a thickness of 10mm and a height of 80% of the height of the I-beam; a connecting flange plate (1-4) with a thickness of 25mm and a diameter of 300mm; the end reinforcement plate (1-2) is vertically welded to both ends of the main body 20# I-beam (1-1) through a full penetration weld, and the weld height is not less than 10mm; the web stiffening rib (1-3) is connected every 5 00mm are arranged at equal intervals along the length direction of the I-beam, and are welded at a 45° angle to the web of the main body 20# I-beam (1-1), using double-sided welding, and the height of each weld is not less than 8mm; the connecting flange plate (1-4) is welded to the end of the main body 20# I-beam (1-1) through an annular weld, and the weld is a full penetration weld, and the thickness is equal to the thickness of the flange plate; 8 bolt holes with a diameter of 22mm are evenly arranged on the connecting flange plate (1-4) for connection with adjacent components; the surface of the first-level support (1) is treated with anti-corrosion, using epoxy zinc-rich primer and polyurethane topcoat, and the total coating thickness is not less than 120μm.

3. The cantilever structure support system with multi-level support optimization design according to claim 1 is characterized in that: The second-level support (2) is composed of the following components: a main body 18# I-beam (2-1) with a height of 180 mm and a flange width of 90 mm; a reinforcing rib plate (2-2) with a thickness of 8 mm and a height of 160 mm; a connecting pad (2-3) with a thickness of 15 mm and a size of 150 mm×150 mm; an adjustable support seat (2-4) made of high-strength alloy steel with a diameter of 120 mm; the reinforcing rib plates (2-2) are arranged at equal intervals of 400 mm along the length direction of the main body 18# I-beam (2-1), and are vertically welded to the web of the I-beam, using double-sided welding, and the height of the weld on each side is not less than 6 mm; the connecting pad (2-3) is connected by 4 M16 high-strength screws. The bolt is connected to the flange of the main body 18# I-beam (2-1), and the bolt spacing is 100mm; the adjustable support seat (2-4) is fixed to the connecting pad (2-3) by a central bolt, the bolt diameter is 24mm, and the strength grade is 10.9; the adjustable support seat (2-4) is provided with a spherical groove with a diameter of 90mm, which is used to cooperate with the ball joint (6) of the third-level support (3); the connection between the second-level support (2) and the first-level support (1) is provided with a reinforcing steel plate (2-5) with a thickness of 12mm, which is welded to the two-level support by a full penetration weld; the surface of the second-level support (2) is hot-dip galvanized, and the thickness of the galvanized layer is not less than 85μm to improve corrosion resistance.

4. The cantilever structure support system with multi-level support optimization design according to claim 1 is characterized in that: The third-level support (3) is composed of the following components: a main body high-strength aluminum alloy tube (3-1) with an outer diameter of 80 mm, a wall thickness of 6 mm, and a material of 7075-T6 aluminum alloy; a built-in precision screw mechanism (3-2) made of high-strength stainless steel with a pitch of 2 mm; an upper end ball joint (3-3) with a diameter of 90 mm, which cooperates with the adjustable support seat (2-4) of the second-level support (2); a lower end anchor joint (3-4) for connecting to the carbon fiber anchor (7) of the fourth-level support (4); a fine adjustment mechanism (3-5) comprising a precision gear set and a dial; the built-in precision screw mechanism (3-2) is installed inside the main body high-strength aluminum alloy tube (3-1) and fixed by a specially designed bearing seat to achieve a length adjustment of 1000-1500 mm; the upper end ball joint (3-3) is connected to the carbon fiber anchor (7) of the fourth-level support (4) by a special bearing seat. The over-high-strength threaded connection is connected to the upper end of the main high-strength aluminum alloy tube (3-1), and the thread length is not less than 50 mm; the lower end anchor joint (3-4) is connected to the lower end of the main high-strength aluminum alloy tube (3-1) by a wedge-shaped locking mechanism to ensure that it will not loosen under stress; the fine-adjustment mechanism (3-5) is installed in the middle of the main high-strength aluminum alloy tube (3-1), and is driven by a precision gear set, and each rotation can achieve 0.1 mm of precise adjustment; the surface of the third-level support (3) is anodized, and the thickness of the oxide layer is not less than 25 μm, and a polytetrafluoroethylene coating is coated with a thickness of 50 μm to improve wear resistance and self-lubrication; the third-level support (3) is also equipped with an anti-loosening locking device (3-6) made of high-strength nylon material, which can lock the length of the support rod after the adjustment is completed.

5. The cantilever structure support system with multi-level support optimization design according to claim 1 is characterized in that: The fourth-level support (4) is composed of the following components: a main carbon fiber composite cable (4-1) with a diameter of 20 mm, which is made of T700 grade carbon fiber and epoxy resin, and the fiber volume fraction is not less than 65%; an end metal sleeve (4-2) made of 316L stainless steel, with a length of 150 mm and a conical wedge structure inside; a tension regulator (4-3) made of high-strength aluminum alloy, which can achieve ±50 mm length fine-tuning; an anti-vibration and noise reduction device (4-4) made of nitrile rubber and installed in the middle of the cable; a stress monitoring sensor (4-5) using fiber grating technology and built into the cable; both ends of the main carbon fiber composite cable (4-1) are bonded to the end metal sleeve (4-2) by epoxy resin adhesive, the bonding length is not less than 100 mm, and is carried out by the conical wedge structure. Mechanical locking; the tension regulator (4-3) is installed at one end of the cable and is connected to the end metal sleeve (4-2) and the carbon fiber anchor (7) through left-right threaded connection, and can achieve 1mm precise adjustment with each rotation; the anti-vibration and noise reduction device (4-4) adopts a split design and is fixed to the cable by a clamp, which can effectively reduce wind-induced vibration; the stress monitoring sensor (4-5) is arranged with a measuring point every 500mm along the length of the cable, and transmits data to the monitoring center in real time by wireless transmission; the surface of the fourth-level support (4) is coated with a fluorocarbon coating with a thickness of 100μm to improve weather resistance and UV resistance; the connection angle between the fourth-level support (4) and the third-level support (3) can be adjusted within the range of 0°-45°, which is achieved by the multi-hole positioning device on the carbon fiber anchor (7).

6. The cantilever structure support system with multi-level support optimization design according to claim 1 is characterized in that: The connection between the first-level support (1) and the second-level support (2) is composed of the following components: a high-strength bolt (5-1) with a specification of M20, a grade of 10.9, and a length of 100 mm; a high-strength nut (5-2) matching the bolt and adopting a self-locking design; a thickened gasket (5-3) with a thickness of 5 mm, an outer diameter of 40 mm, and an inner diameter of 22 mm; a connecting flange plate (5-4) with a thickness of 25 mm and a diameter of 300 mm; a locking washer (5-5) with a disc spring design and a material of 65Mn steel; at least four high-strength bolts (5-1) are used at each connection point, arranged in a square with a spacing of 120 mm; the connecting flange plate (5-4) is respectively welded to the ends of the first-level support (1) and the second-level support (2) using a full penetration weld, and the weld height is equal to the thickness of the flange plate; The strength bolts (5-1) pass through corresponding holes of the two connecting flange plates (5-4), and a thickened gasket (5-3) and a locking washer (5-5) are respectively arranged at both ends of each bolt; the high-strength nut (5-2) is tightened using a torque wrench, the tightening torque is 550N·m, and a double-nut locking technology is adopted; the connection is also provided with a centering pin (5-6) with a diameter of 25mm and a length of 80mm, which is used to ensure the centering installation of the two supports; a high-strength friction coefficient glue (5-7) with a thickness of 0.2mm is applied between the connecting flange plates (5-4) to increase the connection rigidity; the entire connecting assembly is treated with anti-corrosion, and a hot zinc spraying process is adopted, and the spraying thickness is not less than 100μm; the connecting assembly is also equipped with a stress monitoring sensor (5-8), which is installed on one of the bolts and is used to monitor the stress state of the connection in real time.

7. The cantilever structure support system with multi-level support optimization design according to claim 1 is characterized in that: The adjustable ball joint (6) between the second-stage support (2) and the third-stage support (3) is composed of the following components: a ball joint body (6-1), made of GCr15 bearing steel, with a diameter of 90 mm and a surface nitrided; a ball socket (6-2), made of high-strength aluminum alloy, with an inner diameter of 91 mm, matched with the ball joint body (6-1); a locking ring (6-3), made of alloy steel, connected to the ball socket (6-2) by a thread; a fine-tuning screw mechanism (6-4), which is composed of a high-precision ball screw and can achieve precise adjustment of ±10mm; the sealing ring (6-5) is made of fluororubber material to prevent dust and moisture from entering the ball joint; the grease injection port (6-6) is used to regularly inject high-performance grease; the ball joint body (6-1) is connected to the upper end of the third-level support (3) by a heat-pressing method, and the press-fitting depth is not less than 50mm; the ball socket (6-2) is connected to the second-level support ( 2) is fixedly connected to the adjustable support seat (2-4); the locking ring (6-3) is connected to the ball socket seat (6-2) by a precision thread, the pitch of which is 1.5 mm, and the preload force can be adjusted by a special wrench; the fine-tuning screw mechanism (6-4) is installed at the bottom of the ball socket seat (6-2), and through precision gear transmission, each rotation can achieve a height adjustment of 0.05 mm; the sealing ring (6-5) adopts a double-layer design, the outer layer is a dustproof seal, and the inner layer is an oil seal, to ensure the length of the ball joint The grease injection port (6-6) is provided with a one-way valve to prevent the grease from flowing back, and is equipped with a dust cover; the adjustable angle range of the ball joint (6) is ±15° in the horizontal direction and ±10° in the vertical direction; the surface of the ball joint (6) is treated with a Teflon coating with a thickness of 50 μm to reduce the friction coefficient; the ball joint (6) is also equipped with an angle indicator (6-7) and an electronic level (6-8) for accurately controlling and monitoring the joint angle.

8. The cantilever structure support system with multi-level support optimization design according to claim 1 is characterized in that: The specially designed carbon fiber anchor (7) between the third-level support (3) and the fourth-level support (4) is composed of the following components: a main anchor block (7-1), made of high-strength carbon fiber composite material, with a size of 150 mm×100 mm×80 mm; a wedge-shaped locking mechanism (7-2), made of titanium alloy, used to fix the carbon fiber cable of the fourth-level support (4); a multi-angle adjustment plate (7-3), made of aviation-grade aluminum alloy, capable of achieving an angle adjustment of 0°-45°; a high-strength connecting bolt (7-4), with a specification of M24 and a grade of 12.9, used to The anchor is connected to the third-level support; the stress dispersing gasket (7-5) is made of carbon fiber reinforced polyetheretherketone (PEEK) material; the anti-loosening device (7-6) adopts double nut locking technology and is used in conjunction with an anti-loosening washer; the stress monitoring sensor (7-7) adopts fiber optic grating technology and is built into the main anchor block; the main anchor block (7-1) is connected to the high-strength connecting bolt (7-4) through a pre-buried carbon fiber reinforced epoxy resin threaded sleeve (7-8), and the thread depth is not less than 60mm; the wedge-shaped locking mechanism (7-2) is embedded in the main anchor block (7-1), The clamping force of the wedge block is controlled by a hydraulic device (7-9) to ensure that the carbon fiber cable of the fourth-level support (4) is reliably fixed; the multi-angle adjustment plate (7-3) is connected to the main anchor block (7-1) through a precision bearing (7-10) and can achieve an angle adjustment of ±22.5° in two planes; the stress dispersion gasket (7-5) is arranged between the contact surface of the main anchor block (7-1) and the third-level support (3) and has a thickness of 5 mm for uniformly distributing stress; the anti-loosening device (7-6) adopts intelligent electronic locking technology and can remotely monitor the locking status through wireless signals ; The stress monitoring sensor (7-7) is arranged with three measuring points along the force direction of the anchor to monitor the stress distribution in real time; the surface of the carbon fiber anchor (7) is treated with a nano-ceramic coating with a coating thickness of 100 μm to improve wear resistance and corrosion resistance; the carbon fiber anchor (7) is also equipped with a temperature compensation device (7-11) to offset thermal expansion and contraction caused by temperature changes; a flexible buffer layer (7-12) is provided at the connection between the carbon fiber anchor (7) and the third-level support (3), which is made of polyurethane material and has a thickness of 2 mm to absorb small vibrations.

9. The cantilever structure support system with multi-level support optimization design according to claim 1 is characterized in that: The connection between the fourth-level support (4) and the building structure is composed of the following components: embedded parts (8), including: The embedded steel plate (8-1) is made of Q345 steel, with a thickness of 20 mm and a size of 300 mm × 300 mm; Shear nails (8-2), with a diameter of 12 mm and a length of 100 mm, are welded evenly along the periphery of the embedded steel plate; Embedded bolts (8-3), specification M24, grade 8.8, length 200mm; post-anchor bolts (9), include: Chemical anchor bolt (9-1), diameter 20mm, buried depth 250mm, using epoxy resin type anchoring agent; Expansion anchor bolt (9-2), diameter 16mm, buried depth 150mm, made of stainless steel; connection pad (9-3), thickness 15mm, size 400mm×400mm, made of Q345 steel; adjustment nut set (9-4), including upper and lower two M24 nuts, used for precise height adjustment; anti-corrosion protective sleeve (9-5), made of 304 stainless steel, thickness 2mm; The embedded parts (8) are fixed on the formwork before concrete pouring, and the embedded steel plate (8-1) is flush with the concrete surface; the embedded bolts (8-3) are arranged in a square shape on the embedded steel plate (8-1) with a spacing of 200 mm; the post-anchor bolts (9) are arranged in an octagonal shape on the connecting pad (9-3), and the chemical anchor bolts (9-1) and the expansion anchor bolts (9-2) are arranged alternately; the connecting pad (9-3) is connected to the embedded parts (8) and the post-anchor bolts (9) through an adjusting nut group (9-4), and the height adjustment of ±30 mm can be achieved; the end of the fourth-level support (4) is hinged to the connecting pad (9-3) through a high-strength pin shaft (9-6), the pin shaft has a diameter of 30 mm and is made of 42CrMo material; the hinge An angle adjustment mechanism (9-7) is provided, which can achieve an angle adjustment of ±10° in the vertical direction; high-strength non-shrinkage grouting material (9-8) is filled between the connection pad (9-3) and the building structure, and the thickness is not less than 30mm; all exposed metal surfaces are treated with epoxy zinc-rich primer and polyurethane topcoat for anti-corrosion, and the total coating thickness is not less than 120μm; the connection is also provided with a waterproof sealing ring (9-9), which is made of EPDM material to ensure the waterproof performance of the connection; the connection system is equipped with an intelligent monitoring device (9-10), including a stress sensor, an inclination sensor and a displacement sensor, to monitor the connection status in real time; the connection system is also provided with a lightning protection grounding device (9-11) to ensure lightning protection of the entire support system.

10. The cantilever structure support system with multi-level support optimization design according to claim 1 is characterized in that: The adjusting device (10) arranged on the third-level support (3) is composed of the following components: a precision screw adjusting mechanism (10-1), comprising: External thread sleeve (10-1-1), made of 7075-T6 aluminum alloy, with a pitch of 2mm; The internal thread rod (10-1-2) is made of Ti6Al4V titanium alloy and matches the external thread sleeve; the electric drive device (10-2) includes: Micro servo motor (10-2-1), power 200W, adjustable speed; Reducer (10-2-2), reduction ratio 1:100, accuracy level P1; digital control system (10-3), including: Microprocessor (10-3-1), 32-bit ARM architecture; Touch screen display (10-3-2), size 3.5 inches, resolution 320×480; precision sensor group (10-4), including: Laser rangefinder (10-4-1), accuracy ±0.1mm; Tilt sensor (10-4-2), accuracy 0.01°; locking mechanism (10-5), using hydraulic locking technology; dustproof and waterproof housing (10-6), protection level IP67; The precision spiral adjustment mechanism (10-1) is installed in the middle of the third-level support (3) and can achieve a fine adjustment range of ±50 mm; the external threaded sleeve (10-1-1) is fixedly connected to the upper half of the third-level support (3), and the internal threaded rod (10-1-2) is fixedly connected to the lower half; the electric drive device (10-2) is connected to the external threaded sleeve (10-1-1) through a coupling (10-7), and can achieve a precise adjustment of 0.02 mm per rotation; the digital control system (10-3) is installed in a dustproof and waterproof housing (10-6), and is connected to the electric drive device (10-2) and the precision sensor group (10-4) through a waterproof interface; the precision sensor group (10-4) is respectively installed at the upper and lower ends of the third-level support (3) for real-time monitoring of the support length and tilt angle; the locking mechanism (10-5) is arranged on the precision spiral adjustment mechanism (10-1) The two ends of the adjusting device (10-6) can lock the support length after the adjustment is completed; the dustproof and waterproof shell (10-6) is made of carbon fiber reinforced polycarbonate material, which is light in weight and high in strength; the adjusting device (10) is also equipped with a wireless communication module (10-8) that supports WiFi and Bluetooth connections and can be remotely controlled through a mobile device; the power supply system of the adjusting device (10) includes a rechargeable lithium battery (10-9) and a solar charging panel (10-10) to ensure long-term stable operation; the adjusting device (10) is also provided with an emergency manual adjustment mechanism (10-11) that can be used when the power system fails; all metal parts of the adjusting device (10) are anodized, and the thickness of the oxide layer is not less than 25 μm to improve corrosion resistance; a shock-absorbing cushion (10-12) is provided between the adjusting device (10) and the third-level support (3), which is made of polyurethane material and has a thickness of 5 mm to absorb small vibrations.

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