Outdoor cement fiberboard anti-falling structure and construction method thereof

Abstract

The invention discloses an outdoor cement fiberboard anti-falling structure and a construction method thereof. The structure is used for connecting cement fiberboards. Comprising a keel frame; the keel frame is arranged on the outer side of a wall body of a main body structure and connected with the wall body through a connecting assembly. An anchoring assembly is arranged at the top of the keel frame; the cement fiberboard is arranged on the outer side of the keel frame, and the cement fiberboard is connected with the keel frame through a fixing piece; an inhaul cable is arranged between the cement fiber board and the anchoring assembly in a pulling mode. An optical fiber sensor is embedded in the anchoring assembly and the inhaul cable; a bottom layer steel wire mesh is arranged on the inner side of the cement fiberboard, and a leveling layer is arranged on the outer side of the cement fiberboard. The technical problems that according to a traditional fixing method, loosening or corrosion is likely to happen, the cement fiber pressure plate falls off, and then personnel and property safety is threatened are solved.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering, in particular to an outdoor cement fiber board anti-falling structure and a construction method thereof. Background Art

[0002] With the rapid development of the construction industry and infrastructure construction, cement fiber pressure boards are widely used in the facades, roofs and transportation facilities of various buildings, especially in environments that require fire resistance, corrosion resistance and high strength. The advantages of cement fiber pressure boards as building materials are gradually recognized. However, cement fiber pressure boards are prone to falling when exposed to harsh environments for a long time or due to improper maintenance, which not only endangers the safety of pedestrians, but may also affect the structural integrity of the building itself.

[0003] At present, the fixing methods of cement fiber pressure boards are mostly direct fixing, adhesive fixing and hanging installation. Among them, the direct fixing method mostly uses screws or self-tapping screws. This is the most common installation method and is suitable for most indoor and some outdoor application scenarios. The board is directly fixed to the supporting structure by using metal screws or self-tapping screws of appropriate length and diameter. Adhesive fixing: In some cases, such as background walls, decorative surfaces, etc., you may choose to use a special construction adhesive to stick the fiber reinforced cement board. This method is particularly suitable for smooth substrate surfaces, such as concrete walls or old tile walls. Hanging installation mostly uses hangers or hooks. When the board is used as part of a ceiling or other suspended structure, it can be installed with specially designed hangers or hooks. This method is often used in commercial spaces or inside public buildings.

[0004] However, although these traditional fixing methods can guarantee a certain fixing effect in the initial stage, with the influence of environmental factors (such as temperature changes, humidity fluctuations, etc.) and the extension of service life, the fixing devices are prone to loosening or corrosion, causing the cement fiber pressure board to fall off, thereby posing a threat to the safety of personnel and property. Summary of the invention

[0005] The purpose of the present invention is to provide an outdoor cement fiber board anti-falling structure and a construction method thereof, in order to solve the technical problem that the traditional fixing method is prone to loosening or corrosion, causing the cement fiber pressure board to fall, thereby posing a threat to the safety of personnel and property.

[0006] To achieve the above purpose, the present invention adopts the following technical solution.

[0007] An outdoor cement fiber board anti-drop structure is used to connect cement fiber boards; it includes a keel frame; the keel frame is arranged on the outside of the wall of the main structure and connected to the wall through a connecting component; an anchoring component is arranged on the top of the keel frame; the cement fiber board is arranged on the outside of the keel frame, and the cement fiber board is connected to the keel frame through a fixing piece; a cable is stretched between the cement fiber board and the anchoring component; an optical fiber sensor is embedded in the anchoring component and the cable; A bottom steel mesh is arranged on the inner side of the cement fiber board, and a leveling layer is arranged on the outer side of the cement fiber board.

[0008] Preferably, the connecting assembly includes a connecting plate and a clamping plate; the connecting plate is embedded in the wall and fixed by embedded bolts; there are two clamping plates, which are arranged on the outer side of the connecting plate, and the two clamped on the keel rod of the keel frame.

[0009] Preferably, the anchoring assembly includes an anchoring plate and a pull ring; the anchoring plate is fixedly connected to the keel frame; the pull ring is U-shaped and fixedly connected to the anchoring plate; a lifting ring is provided on the back of the cement fiber board; and the pull cable is provided between the pull ring and the lifting ring.

[0010] Preferably, a glass fiber mesh layer is laid in the leveling layer.

[0011] Preferably, a piezoelectric ceramic is provided at the connection node between the cable and the anchor assembly; a shape memory alloy module is connected in series in the cable, and the shape memory alloy module and the piezoelectric ceramic cooperate to achieve dynamic tension adjustment.

[0012] Preferably, a sleeve is pre-buried on the back side of the cement fiber board; a thread is provided inside the sleeve; and the lifting ring is threadedly connected to the sleeve.

[0013] Preferably, the keel frame includes a frame body, vertical connecting rods and horizontal connecting rods; there is a group of vertical connecting rods, which are arranged on the outside of the frame body along the longitudinal interval; a row of vertical connecting rods is connected to the frame body through horizontal connecting rods; the cement fiber board is connected to the outside of a row of vertical connecting rods.

[0014] Preferably, the bottom steel wire mesh is made of wavy stainless steel wire mesh, and the embedding depth is 1 / 3 of the plate thickness; barbed claws are provided at the nodes of the bottom steel wire mesh; and the sleeve is connected to the barbed claws.

[0015] A construction method for an outdoor cement fiberboard anti-falling structure comprises the following steps.

[0016] Step 1: Board pretreatment: Clean and dry the surface of the cement fiber board and keel frame.

[0017] Step 2: Preliminary fixation: Fix the cement fiber board to the outside of the keel frame through fixing parts.

[0018] Step 3: Install the anchor assembly: Install the anchor assembly on the top of the keel frame.

[0019] Step 4: embed fiber optic sensors in the anchoring components and cables.

[0020] Step 5: Pull a cable between the cement fiber board and the anchor assembly.

[0021] Step six, dynamically calibrate the tension of the cable until the cable is in a uniformly stressed state.

[0022] Step seven, a leveling layer is provided on the outside of the cement fiber board, and the construction is completed.

[0023] Preferably, when the cement fiberboard is produced before step one, a bottom steel wire mesh is arranged on the inner side of the cement fiberboard, and the bottom steel wire mesh is connected with barbed claws and sleeves; the bottom steel wire mesh is pre-pressed and embedded in the uncured substrate of the cement fiberboard through a mold, and the embedding depth is 1 / 3 of the board thickness.

[0024] Compared with the prior art, the present invention has the following characteristics and beneficial effects.

[0025] 1. The present invention combines a dual fixing mechanism with a multi-dimensional support structure: The present invention combines high-strength aluminum alloy connectors with cables for the first time, and adopts a dual fixing mechanism (bolts + cables) for support. Traditional fixing methods mainly rely on single bolts or nails, and fail to fully consider the impact of external force changes on the long-term stability of the pressure plate. The present invention uses the tension structure of the cable and the high-strength support of the aluminum alloy connector, which can share the pressure in different directions under the action of external force, thereby enhancing the anti-drop ability of the cement fiber pressure plate.

[0026] 2. The present invention adopts a self-adjusting tension system for the cable, which realizes automatic adjustment of the cable tension through the buckle adjustment function. This design enables the cable to automatically adjust the tension state when the pressure plate is slightly displaced, thereby effectively avoiding loosening problems caused by ambient temperature changes, vibration or long-term use. The design of this self-adjusting system greatly improves the long-term stability and adaptability of the device.

[0027] 3. In the traditional lifting ring design, a closed structure is usually adopted, which has a certain risk of stress concentration. The present invention adopts a non-closed lifting ring design, which reduces stress concentration and avoids the possibility of deformation or failure of the lifting ring by optimizing the contact point between the force-bearing surface of the lifting ring and the cable. This structure improves the impact resistance and durability of the device while maintaining stable fixation.

[0028] 4. The present invention innovatively uses corrosion-resistant aluminum alloy materials and stainless steel bolts, and further improves long-term stability in harsh environments through reasonable sealing and connection methods. Traditional materials are prone to corrosion or deformation in environments exposed to high humidity, strong ultraviolet rays or extreme temperature changes for a long time, while the design of this device greatly improves the material's anti-aging and anti-corrosion capabilities and extends its service life.

[0029] 5. Potential intelligent upgrade path of the present invention - it can be combined with sensors to form an intelligent monitoring and early warning system. For example, by installing a tension sensor to monitor the tension change of the cable, possible loosening risks can be detected in time, and the maintenance personnel can be notified through the early warning system. This intelligent solution further improves safety and is expected to achieve remote monitoring and maintenance management in the future.

[0030] 6. Through these innovations, the present invention not only solves the shortcomings of the prior art in fixing the cement fiber pressure plate, but also further improves the adaptability, reliability and safety of the device, providing a more advanced and efficient safety guarantee for the construction field, especially high altitude and public places.

[0031] 7. In the present invention, the shape memory alloy module and piezoelectric ceramics are arranged to realize dynamic tension adjustment, and the "perception-decision-execution" closed loop is formed through the precise perception of optical fiber sensing, intelligent decision-making of AI algorithm, and complementary execution of shape memory alloy SMA module and piezoelectric. The system realizes full-dimensional tension control from static to dynamic, from macro to micro. In the anti-drop system, this synergy increases the tension adjustment response speed by a hundred times, while ensuring data security and system reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] Figure 1 It is a structural schematic diagram of the outdoor cement fiberboard anti-falling structure of the present invention.

[0034] Figure 2 It is a structural schematic diagram of the cement fiber board of the present invention.

[0035] Figure numerals: 1 - cement fiber board, 2 - keel frame, 2.1 - frame body, 2.2 - vertical connecting rod, 2.3 - horizontal connecting rod, 3 - wall, 4 - connection assembly, 4.1 - connecting plate, 4.2 - clamping plate, 4.3 - embedded bolt, 5 - anchor assembly, 5.1 - anchor plate, 5.2 - pull ring, 6 - fixing part, 7 - cable, 8 - bottom steel wire mesh, 9 - leveling layer, 10 - lifting ring, 11 - glass fiber mesh layer, 12 - cable buckle, 13 - sleeve, 14 - barbed claw, 15 - floor slab. DETAILED DESCRIPTION

[0036] like Figure 1-2 As shown, this outdoor cement fiber board anti-drop structure is used to connect the cement fiber board 1; it includes a keel frame 2; the keel frame 2 is arranged on the outside of the wall 3 of the main structure, and is connected to the wall 3 through a connecting component 4; an anchoring component 5 is arranged on the top of the keel frame 2; the cement fiber board 1 is arranged on the outside of the keel frame 2, and the cement fiber board 1 is connected to the keel frame 2 through a fixing member 6; a cable 7 is stretched between the cement fiber board 1 and the anchoring component 5; optical fiber sensors are embedded in the anchoring component 5 and the cable 7; the tension, displacement and corrosion status are monitored in real time, and the monitoring data is transmitted to the management platform through the Internet of Things module; A bottom steel wire mesh 8 is arranged on the inner side of the cement fiber board 1 , and a leveling layer 9 is arranged on the outer side of the cement fiber board 1 . A glass fiber mesh cloth layer 11 is laid in the leveling layer 9 .

[0037] In this embodiment, the connecting assembly 4 includes a connecting plate 4.1 and a clamping plate 4.2; the connecting plate 4.1 is embedded in the wall 3, and the connecting plate 4.1 is fixed by embedded bolts 4.3; the clamping plates 4.2 have two pieces, which are arranged on the outer surface of the connecting plate 4.1, and the two pieces are clamped on the keel rod of the keel frame 2.

[0038] In this embodiment, the anchoring assembly 5 includes an anchoring plate 5.1 and a pull ring 5.2; the anchoring plate 5.1 is fixedly connected to the keel frame 2; the pull ring 5.2 is U-shaped and fixedly connected to the anchoring plate 5.1; a lifting ring 10 is provided on the back of the cement fiber board 1; the pull cable 7 is pulled between the pull ring 5.2 and the lifting ring 10.

[0039] In this embodiment, piezoelectric ceramics are arranged at the connection node between the cable 7 and the anchor assembly 5; a shape memory alloy module is connected in series in the cable 7, and the shape memory alloy module and the piezoelectric ceramics cooperate to achieve dynamic tension adjustment. During use, the fiber grating sensor with a wavelength resolution of 0.01nm measures the tension change of the cable 7 in real time and synchronously detects the ambient temperature, and the data is transmitted to the edge computing unit through optical fiber; the edge computing unit achieves the coordinated control of the piezoelectric ceramics and the SMA module through hardware interface adaptation, hierarchical control algorithm and real-time closed-loop feedback.

[0040] In the cable 7, the core component that cooperates with the piezoelectric ceramics is the shape memory alloy SMA module, and the two realize dynamic tension adjustment through mechanical linkage and intelligent control algorithm.

[0041] In this embodiment, a sleeve 13 is pre-buried on the back of the cement fiber board 1 ; a thread is arranged inside the sleeve 13 ; and the hanging ring 10 is threadedly connected to the sleeve 13 .

[0042] In this embodiment, the keel frame 2 includes a frame body 2.1, vertical connecting rods 2.2 and horizontal connecting rods 2.3; the vertical connecting rods 2.2 are arranged in a group at longitudinal intervals on the outside of the frame body 2.1; a row of vertical connecting rods 2.2 is connected to the frame body 2.1 through horizontal connecting rods 2.3; the cement fiber board 1 is connected to the outside of a row of vertical connecting rods 2.2.

[0043] In this embodiment, the bottom steel mesh 8 is made of wavy stainless steel mesh, and the embedding depth is 1 / 3 of the plate thickness; a barbed claw 14 is set at the node of the bottom steel mesh 8; the sleeve 13 is connected to the barbed claw 14; the barbed claw 14 is 3 mm long and 1 mm in diameter, and is embedded in the cement substrate to form a mechanical interlock. The epoxy resin-silicon dioxide nanoparticle composite coating is sprayed on the surface of the bottom steel mesh 8 with a thickness of 50 μm, and the bonding force is enhanced by chemically bonding Si-O-Si and physically anchoring nano-roughness.

[0044] When the cement fiber board 1 is cast, 0.5 wt % carbon nanotubes are added into the cement fiber board 1 . The diameter of the carbon nanotubes is 20 nm and the aspect ratio is 1000:1, so as to improve the interfacial bonding strength between the base material of the cement fiber board 1 and the underlying steel mesh 8 .

[0045] The bottom steel wire mesh 8 is a wavy stainless steel wire mesh with a wave height of 5 mm and a wavelength of 20 mm. It is pre-pressed and embedded in the uncured base material of the cement fiber board through a mold, and the embedding depth is 1 / 3 of the board thickness.

[0046] Anchoring claws: barbed claws 14 are welded at 8 nodes of the bottom steel wire mesh. The barbed claws 14 are 3 mm long and 1 mm in diameter and are embedded in the cement base material to form mechanical interlocking.

[0047] In this embodiment, the keel frame 2 is arranged on the outside of the wall 3 and between the upper and lower floor slabs.

[0048] In this embodiment, the fixing member 6 is a stainless steel countersunk self-tapping screw, which is usually 4-6 mm in diameter and 20-40 mm in length, and can be self-drilled in the steel rectangular tube to ensure the stability of the fixation.

[0049] In this embodiment, the bending strength of the cement fiber board 1 is ≥18 MPa.

[0050] In this embodiment, the cable 7 is made of steel wire rope with a diameter of not less than 5 mm and a breaking force of ≥12 kN; the anchor plate 5.1 is made of aluminum alloy with a thickness of 20 mm and anodized surface.

[0051] In this embodiment, the anchor plate 5.1 is connected to the keel frame 2 by high-strength bolts. The high-strength bolts are made of stainless steel and have strong tensile strength and corrosion resistance. The size is M10×50mm.

[0052] In this embodiment, the keel frame 2 is a rectangular three-dimensional frame made of rectangular steel pipes, and a row of vertical connecting rods 2.2 are arranged at longitudinal intervals on the outer side of the keel frame 2; the vertical connecting rods 2.2 are made of angle steel; a row of vertical connecting rods 2.2 are connected to the keel frame 2 through horizontal connecting rods 2.3; the cement fiber board 1 is connected to a row of vertical connecting rods 2.2.

[0053] In this embodiment, a cable buckle 12 is provided on the cable 7. The cable buckle 12 is made of high-strength plastic or stainless steel, and its size is customized according to the diameter of the cable 7 and usage requirements to ensure that the tightness of the cable 7 can be easily adjusted.

[0054] In this embodiment, the lifting ring 10 is a non-closed lifting ring, and its diameter is usually 15-20 mm. A suitable size is selected according to the diameter of the cable 7 so as to evenly distribute the tension and avoid stress concentration.

[0055] The construction method of the outdoor cement fiber board anti-falling structure comprises the following steps.

[0056] Step 1, board pretreatment: clean and dry the surface of the cement fiber board 1 and the keel frame 2; before construction in step 1, select the cement fiber board 1 and the keel frame 2 of appropriate size according to the actual situation of the installation site.

[0057] Step 2: Initial fixation: fix the cement fiber board 1 to the outside of the keel frame 2 through the fixing piece 6; the fixing piece 6 adopts a stainless steel countersunk self-tapping screw to ensure that the initial fixation is firm and avoid loosening.

[0058] Step three, installing the anchor assembly 5: installing the anchor assembly 5 on the top of the keel frame 2.

[0059] Step 4: embed the optical fiber sensor in the anchoring assembly 5 and the cable 7.

[0060] Step five, pull a cable 7 between the cement fiber board 1 and the anchor assembly 5; pass one end of the cable 7 through the pull ring 5.2 and fix it with a cable buckle 12, and connect the other end of the cable 7 to the lifting ring 10 to ensure that the force-bearing end of the cable is stable.

[0061] Step six, dynamically calibrate the tension of the cable 7 until the cable 7 is in a uniformly stressed state; adjust the cable buckle 12 to keep the cable in a proper tension state, and by adjusting the tightness of the cable 7, ensure that the cement fiber board 1 can remain stable when stressed to prevent it from falling due to relaxation or excessive tension.

[0062] Step seven: a leveling layer 9 is arranged on the outer side of the cement fiber board 1 , and a glass fiber mesh layer 11 is laid in the leveling layer 9 .

[0063] In this embodiment, when the cement fiber board 1 is manufactured before step one, a bottom steel mesh 8 is arranged on the inner side of the cement fiber board 1, and the bottom steel mesh 8 is connected with barbed claws 14 and sleeves 13; the bottom steel mesh 8 is pre-pressed and embedded in the uncured substrate of the cement fiber board through a mold, and the embedding depth is 1 / 3 of the board thickness.

[0064] The above embodiments are not exhaustive of specific implementation methods, and there may be other embodiments. The above embodiments are intended to illustrate the present invention rather than to limit the protection scope of the present invention. All applications derived from simple variations of the present invention fall within the protection scope of the present invention.

Claims

1. An outdoor cement fiber board anti-drop structure for connecting cement fiber boards (1); characterized in that: The invention comprises a keel frame (2); the keel frame (2) is arranged on the outside of a wall (3) of a main structure and is connected to the wall (3) via a connecting assembly (4); an anchor assembly (5) is arranged on the top of the keel frame (2); the cement fiber board (1) is arranged on the outside of the keel frame (2), and the cement fiber board (1) is connected to the keel frame (2) via a fixing member (6); a cable (7) is stretched between the cement fiber board (1) and the anchor assembly (5); optical fiber sensors are embedded in the anchor assembly (5) and the cable (7); A bottom steel mesh (8) is arranged on the inner side of the cement fiber board (1), and a leveling layer (9) is arranged on the outer side of the cement fiber board (1).

2. The outdoor cement fiber board anti-falling structure according to claim 1, characterized in that: The connection assembly (4) comprises a connection plate (4.1) and a clamping plate (4.2); the connection plate (4.1) is embedded in the wall (3), and the connection plate (4.1) is fixed by embedded bolts (4.3); the clamping plates (4.2) are in two pieces, which are arranged on the outer side of the connection plate (4.1), and the two pieces are clamped on the keel rods of the keel frame (2).

3. The outdoor cement fiber board anti-falling structure according to claim 1, characterized in that: The anchoring assembly (5) comprises an anchoring plate (5.1) and a pull ring (5.2); the anchoring plate (5.1) is fixedly connected to the keel frame (2); the pull ring (5.2) is U-shaped and fixedly connected to the anchoring plate (5.1); a lifting ring (10) is provided on the back of the cement fiber board (1); and the pull rope (7) is provided between the pull ring (5.2) and the lifting ring (10).

4. The outdoor cement fiber board anti-falling structure according to claim 1, characterized in that: A glass fiber mesh layer (11) is provided in the leveling layer (9).

5. The outdoor cement fiber board anti-falling structure according to claim 1, characterized in that: A piezoelectric ceramic is arranged at a connection node between the cable (7) and the anchor assembly (5); a shape memory alloy module is connected in series in the cable (7), and the shape memory alloy module and the piezoelectric ceramic cooperate to achieve dynamic tension adjustment.

6. The outdoor cement fiber board anti-falling structure according to claim 3, characterized in that: A sleeve (13) is pre-buried on the back of the cement fiber board (1); a thread is provided inside the sleeve (13); and the lifting ring (10) is threadedly connected to the sleeve (13).

7. The outdoor cement fiber board anti-falling structure according to claim 1, characterized in that: The keel frame (2) comprises a frame body (2.1), vertical connecting rods (2.2) and horizontal connecting rods (2.3); a group of vertical connecting rods (2.2) are arranged at intervals along the longitudinal direction on the outside of the frame body (2.1); a row of vertical connecting rods (2.2) is connected to the frame body (2.1) via horizontal connecting rods (2.3); and the cement fiber board (1) is connected to the outside of a row of vertical connecting rods (2.2).

8. The outdoor cement fiber board anti-falling structure according to claim 1, characterized in that: The bottom steel wire mesh (8) is made of a corrugated stainless steel wire mesh, and the embedding depth is 1 / 3 of the plate thickness; barbed claws (14) are provided at the nodes of the bottom steel wire mesh (8); and the sleeve (13) is connected to the barbed claws (14).

9. A construction method for an outdoor cement fiberboard anti-falling structure according to any one of claims 1 to 8, characterized in that: The steps include: Step 1: pretreatment of the board: cleaning and drying the surface of the cement fiber board (1) and the keel frame (2); Step 2: Preliminary fixing: fixing the cement fiber board (1) to the outer side of the keel frame (2) through the fixing piece (6); Step 3, installing the anchoring assembly (5): installing the anchoring assembly (5) on the top of the keel frame (2); Step 4: embedding optical fiber sensors in the anchoring assembly (5) and the cable (7); Step 5, pulling a cable (7) between the cement fiber board (1) and the anchor assembly (5); Step six, dynamically calibrating the tension of the cable (7) until the cable (7) is in a uniformly stressed state; Step seven: a leveling layer (9) is provided on the outer side of the cement fiber board (1), and the construction is completed.

10. The construction method of the outdoor cement fiber board anti-falling structure according to claim 8, characterized in that: When the cement fiber board (1) is manufactured before step 1, a bottom steel wire mesh (8) is arranged on the inner side of the cement fiber board (1), and the bottom steel wire mesh (8) is connected with the barbed claws (14) and the sleeve (13); the bottom steel wire mesh (8) is pre-pressed and embedded in the uncured base material of the cement fiber board through a mold, and the embedding depth is 1 / 3 of the board thickness.

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