A concealed flexible connection system for an orthogonal laminated veneer lumber walkway

Abstract

The present invention discloses a concealed flexible connection system for a cross-laminated timber walkway, including a concealed flexible base-keel-panel connection, a water-insulating flexible connection between panel seams, and a concrete base, wooden keel, and panel. The concealed flexible base-keel-panel connection is used to connect the concrete base, wooden keel, and panel. The concealed flexible base-keel-panel connection serves as a first connector, comprising a hook angle bracket, an expansion bolt, flat-grooved stainless steel, a short-stem screw, and a rubber vibration-damping pad. The cross-laminated timber walkway and its concealed flexible connection system are characterized by smoothness, concealed connection, deformation release, water-insulating and water-conducting properties, and stability and durability. They effectively enhance the aesthetics, comfort, safety, and durability of wooden walkways and are expected to be widely used in outdoor wooden walkways and indoor wooden floors.

Description

Technical Field

[0001] The present invention relates to the technical field of wooden plank road design and construction, and in particular to a concealed flexible connection system of a cross-laminated timber walkway. Background Art

[0002] Wooden walkways are popular for their aesthetics and comfort, but due to the scarcity of timber resources, the common materials used for wooden walkways are antiseptic wood boards, wood-plastic boards, and even imitation wood grain materials, which can lead to reduced comfort and poor durability. Currently, pedestrian wooden walkways are typically constructed by fixing narrow wooden planks (approximately 10-15 cm wide) with screws to a keel running along the path, which is laid sequentially. This often results in low construction efficiency and poor quality. Furthermore, these types of wooden walkways generally suffer from poor durability. Aging wooden planks can cause deformation and warping, and corrosion of metal connectors can lead to failure of the connection system, resulting in planks falling off and shifting, seriously affecting the safety and applicability of the wooden walkways and damaging the landscape.

[0003] The most common connection system for wooden boardwalks involves securing the lower wooden or steel keel to the concrete floor or concrete strip base via angle connectors. The planks are then screwed to the keel, with narrow gaps between the planks left to allow for drainage and deformation. This type of connection can easily fail due to rusted screws or deformed planks. Alternatively, for customized wood-plastic roofs, special connectors (such as an "X" shape) can be fixed to the keel, allowing the planks to connect quickly with the connectors via snap-fits. However, this type of connection offers limited durability and reliability.

[0004] It is now planned to use the small-diameter wood produced by thinning operations during the artificial forest tending period to prepare cross-laminated timber for use as pedestrian wooden boardwalk panels. Cross-laminated timber panels are larger in width, which can improve the flatness of the wooden boardwalk, greatly improve the paving efficiency, and have better comfort and durability than plastic wood walkways. However, the use of large-format cross-laminated timber panels as wooden boardwalk panels also puts forward new requirements for their connection system and installation methods, such as greater renewal redundancy, concealed connections, and better water-isolating and hydrophobic measures. At present, large-format cross-laminated timber boardwalks are rarely used, and conventional wood-plastic walkway connection systems cannot fully meet the connection requirements of large-format cross-laminated timber boardwalks, and there are no matching connection systems and connectors. Therefore, in combination with the performance requirements of large-format cross-laminated timber boardwalks, the research and development of a concealed flexible connection system and construction method for cross-laminated timber walkways is of great engineering significance. Summary of the Invention

[0005] The purpose of the present invention is to solve the above technical problems and to propose a concealed flexible connection system for orthogonal laminated timber walkways.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A concealed flexible connection system for a cross-laminated timber walkway includes a concealed flexible connection between a base, a keel, and a panel, a waterproof flexible connection between panel seams, and a concrete base, a wooden keel, and a panel. The concealed flexible connection between the base, the keel, and the panel is used to connect the concrete base, the wooden keel, and the panel.

[0008] The concealed flexible connection of the base, keel and panel is a first connector, which includes a hook angle bracket, an expansion bolt, flat-groove stainless steel, a short-shank screw, and a rubber vibration-damping pad. The hook angle bracket is fixed to the bottom of the flat-groove stainless steel and fixed to the concrete base via the expansion bolt. The wooden keel is located in the flat-groove stainless steel and abuts against the upper end of the concrete base. The rubber vibration-damping pad is fixed in the flat-groove stainless steel and abuts against the upper end of the wooden keel. The panel is fixed to the flat-groove stainless steel via the short-shank screw.

[0009] The water-proof flexible connection between the plate seams is used for the joint connection between adjacent panels. The water-proof flexible connection between the plate seams is a second connecting member. The second connecting member includes an inward-retracted "X"-shaped snap connector and fixing bolts, sealant and a T-shaped water-proof cover plate. A slot is provided on the panel. The inward-retracted "X"-shaped snap connector slides in the slot. The inward-retracted "X"-shaped snap connector is fixed to the wooden keel by fixing bolts. The T-shaped water-proof cover plate is against the upper ends of the two panels.

[0010] Preferably, the concrete base is made of plain concrete and is poured on a concrete base layer to adjust the height of the wooden walkway panel and prevent the wooden keel from being soaked in water.

[0011] Preferably, the wooden keel is made of solid wood or cross-laminated timber, and the wide side of the cross section is placed in the middle of the plain concrete base.

[0012] Preferably, the panel is a cross-laminated wood panel with a thickness of not less than 30 mm, a width of not less than 1 m on the long side, and not less than 0.5 m on the short side.

[0013] Preferably, the hook angle code is made of stainless steel, has a thickness of 2 mm, a length of 60 mm, and is arranged at a longitudinal spacing of 350 mm along the wooden keel. The cross-sectional shape of the hook angle code is an unequal U-shape, the height of the unequal U-shaped cross-section is consistent with the height of the wooden keel, the length of the long limb side is equal to half of the difference between the width of the concrete base and the width of the wooden keel, and the length of the short limb side is 8 mm.

[0014] Preferably, the expansion bolts are M6 expansion bolts, and the bolt surfaces are subjected to anti-corrosion treatment.

[0015] Preferably, the flat groove stainless steel is made of stainless steel, the length is consistent with the width of the panel single plate, the cross-section is groove-shaped, the steel plate thickness is 2mm, the cross-sectional width is 20mm larger than the width of the wooden keel, and the cross-sectional height is 8mm larger than the thickness of the rubber vibration damping pad.

[0016] Preferably, the material of the rubber vibration damping pad layer is chloroprene rubber and its composite rubber with natural rubber. The length of the rubber vibration damping pad layer is consistent with the length of the flat groove stainless steel, the width is consistent with the width of its inner wall, and the thickness should not be less than 4mm.

[0017] Preferably, the inward-retracted "J"-shaped snap connector is made of stainless steel, the steel plate thickness is 2 mm, the linear length is consistent with the width of the wooden keel, the cross-section is an "J" shape with narrowed open edges, the bottom edge width is smaller than the width between the two panel seams, and the distance between the two flange edges is 20 mm wider than the panel seam spacing.

[0018] Preferably, the T-shaped water-blocking cover plate is made of stainless steel with a thickness of 1-1.5 mm. The length of the T-shaped water-blocking cover plate is arranged along the entire length of the panel seam. The width of the T-shaped water-blocking cover plate 11 is 30 mm wider than the panel seam spacing. The edges are thinned by a slope, or grooves are milled on the edges of the orthogonal plywood surfaces. The thickness is consistent with the T-shaped water-blocking cover plate, so that the top surface of the T-shaped water-blocking cover plate is flush with the top surface of the orthogonal plywood after installation. A connecting plate and a card plate are hung below the middle of the top plate of the T-shaped water-blocking cover plate. The width of the card plate is between the narrowed opening spacing and the bottom edge width of the inward-retracted "J"-shaped snap connector, so that the T-shaped water-blocking cover plate cannot be pulled out after installation. The T-shaped water-blocking cover plate is inserted into the middle of the inward-retracted "J"-shaped snap connector by a side string method. The edge of the T-shaped water-blocking cover plate is smeared with waterproof sealant and pressed down to fix the top edge of the seam panel.

[0019] A construction process for a concealed flexible connection system for a cross-laminated timber walkway includes the following steps:

[0020] (1) Lay out the lines on the concrete floor and pour the concrete cushion layer;

[0021] (2) The wooden keel is placed in the center of the concrete cushion layer, and the two sides are limited by stainless steel bent edge brackets. The stainless steel bent edge brackets are fixed to the concrete cushion layer by expansion bolts;

[0022] (3) Lay out the lines on the back of the cross-laminated timber panel, fix the grooved stainless steel to the back of the cross-laminated timber panel with short screws, and place a fixed rubber vibration damping pad inside the grooved stainless steel;

[0023] (4) Slide the cross-laminated wood panel with a grooved stainless steel keel on the back into the designated position along the stainless steel curved corner bracket slide in the direction of the keel and place it on the wooden keel;

[0024] (5) At the side seam of the board, insert one flange of the inward-retracted "X"-shaped snap connector into the side slot of the cross-laminated wood panel, and fix the bottom edge of the inward-retracted "X"-shaped snap connector to the wooden keel with screws;

[0025] (6) Install the next cross-laminated wood panel according to steps (3)-(4), inserting the side slot of the leading edge of the wood panel into the other side flange of the inward-retracted "X"-shaped snap connector;

[0026] (7) The T-shaped water-blocking cover is inserted into the inner limit of the inward-retracted "X"-shaped snap connector between the board seams. After applying sealant on the edges of the water-blocking board and the wooden board, press down and fix them tightly.

[0027] (8) Repeat steps (3) to (7) and install them in sequence until the wooden plank road is paved.

[0028] In step (1), the concrete cushion layer is made of plain concrete material, and its width is equal to the sum of the width of the wooden keel and twice the length of the long leg of the stainless steel bent corner bracket. The height can be designed according to the height difference between the concrete floor and the wooden walkway plane.

[0029] In step (2), after the stainless steel bent edge bracket is installed, the bent edge bracket is at the same height as the wooden keel, the long side is placed on the concrete base, the length reaches the edge of the concrete base, the short side is flush with the plane of the wooden keel, and an 8mm hook buckle is formed on each side of the wooden keel.

[0030] In step (3), the grooved stainless steel is fixed to the back of the wooden board using short screws. The length of the screw is less than the thickness of the wooden board, that is, the screw does not penetrate the wooden board. The rubber vibration damping pad is fixed to the top surface of the inner cavity of the grooved stainless steel after being coated with structural adhesive.

[0031] In step (5), the installation of the inward-retracted "X"-shaped snap connector is to first insert the flange of the snap connector into the side slot of the previously laid wooden board, and then fix the bottom edge of the "X" shape to the wooden keel with screws.

[0032] In step (6), when the next wooden board is slid and laid, the side groove of the later laid wooden board is embedded in the other side flange of the buckle connector, which is a sign that it has slid into place.

[0033] In step (7), the vertical plate and the lower horizontal clip of the T-shaped water-blocking cover are inserted into the cavity formed by the inward-retracted "J"-shaped snap connector along the plate seam direction, and the width of the lower horizontal clip is greater than the inward opening width of the inward-retracted "J"-shaped snap connector, thereby realizing the limiting function of the T-shaped water-blocking cover.

[0034] Beneficial effects of the present invention:

[0035] (1) The connection system of the present invention is suitable for connecting walkways with large-format wooden boards as panels. The connection system has the characteristics of flatness and beauty, concealed connection, deformation release, water isolation and water conduction, stability and durability, which makes the wooden plank road have good aesthetics, comfort, safety and durability.

[0036] (2) The connection system of the present invention makes the wooden walkway beautiful and smooth. Large-width thick boards are used as paving panels for the wooden walkway. The concealed connection method makes the road surface free of screws, thereby improving the beauty and safety of the wooden walkway.

[0037] (3) The connection system of the present invention is a flexible connection method, which adopts flexible connection in both directions. It can effectively compensate for the expansion and deformation of wooden boards under high temperature and high humidity, release horizontal stress, avoid deformation of wooden boards causing warping and stress concentration leading to connection failure, and improve the durability and safety of wooden planks.

[0038] (4) The connection system of the present invention has good waterproof and water-isolating properties, which enables the orderly evacuation and flow of rainwater on the surface of the wooden board, avoids the accumulation of rainwater on the board surface, and prevents rainwater carrying mud and sand from seeping through the board seams and accumulating under the panel to cause corrosion of the keel and connectors, thereby improving the usability and durability of the wooden walkway.

[0039] (5) The connection system of the present invention has good stability and durability. The connection system of the present invention can achieve the effects of preventing wood screws from penetrating wooden boards, effectively releasing deformation of wooden boards, and effectively isolating water to prevent long-term moisture through structural design. These effects can effectively improve the durability of small-diameter cross-laminated timber planks, avoid material performance degradation and component damage, reduce maintenance costs, and extend the service life of wooden planks.

[0040] The concealed flexible connection system of the orthogonal ply glued timber walkway provided by the present invention and its construction process are suitable for the structural connection of wooden plank roads with large-format wooden boards as panels, including the concealed flexible connection of the base-keel-panel and the water-proof flexible connection between the board seams. The orthogonal ply glued timber walkway and its concealed flexible connection system have the characteristics of flatness and beauty, concealed connection, deformation release, water-proofing and water-conducting, stability and durability, which effectively improve the beauty, comfort, safety and durability of the wooden plank road, and are expected to be widely used in outdoor wooden pedestrian walkways and indoor wooden floors. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the concealed flexible connection between the base, keel and wooden board;

[0042] Figure 2 This is the front view of the concealed flexible connection between the base, keel and wooden board;

[0043] Figure 3 This is a schematic diagram of the structure of the flexible connection of the plate seam water barrier;

[0044] Figure 4 This is the front view of the flexible connection for water separation in plate seams.

[0045] In the figure: 1 concrete base, 2 wooden keel, 3 expansion bolts, 4 bent hook angle brackets, 5 flat groove stainless steel, 6 rubber vibration damping pad, 7 panel, 8 fixing bolts, 9 inward-retracted "X"-shaped snap connector, 10 sealant, 11 T-shaped waterproof cover. DETAILED DESCRIPTION

[0046] 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0047] Reference Figure 1-Figure 4 A concealed flexible connection system for a cross-laminated timber walkway includes a concealed flexible connection of a base, a keel, and a panel, a waterproof flexible connection between panel seams, and a concrete base 1, a wooden keel 2, and a panel 7. The concealed flexible connection of the base, the keel, and the panel is used to connect the concrete base 1, the wooden keel 2, and the panel 7.

[0048] The concealed flexible connection of the base, keel, and panel is the first connector, which includes a hook bracket 4, an expansion bolt 3, a flat-grooved stainless steel 5, a short-shank screw, and a rubber vibration-damping pad 6. The hook bracket 4 is fixed to the bottom of the flat-grooved stainless steel 5 and fixed to the concrete base 1 via the expansion bolt 3. The wooden keel 2 is located within the flat-grooved stainless steel 5 and abuts against the upper end of the concrete base 1. The rubber vibration-damping pad 6 is fixed within the flat-grooved stainless steel 5 and abuts against the upper end of the wooden keel 2. The panel 7 is fixed to the flat-grooved stainless steel 5 via a short-shank screw.

[0049] The water-proof flexible connection between the plate seams is used for the joint connection between adjacent panels 7. The water-proof flexible connection between the plate seams is the second connecting part. The second connecting part includes an inward-retracted "X"-shaped snap connector 9 and a fixing bolt 8, a sealant 10 and a T-shaped water-proof cover plate 11. A slot is provided on the panel 7. The inward-retracted "X"-shaped snap connector 9 slides in the slot. The inward-retracted "X"-shaped snap connector 9 is fixed to the wooden keel 2 by a fixing bolt 8. The T-shaped water-proof cover plate 11 is against the upper ends of the two panels 7. The T-shaped water-proof cover plate 11 is made of aluminum alloy material, and the cover plate thickness is 1.0-1.5mm; the expansion bolts are M6 and above bolts, and the surface anti-corrosion treatment is required.

[0050] In the present invention, the concrete base 1 is made of plain concrete and is cast on a concrete base, so as to adjust the height of the wooden walkway panel and prevent the wooden keel 2 from being soaked in water.

[0051] In the present invention, the wooden keel 2 is made of solid wood or cross-laminated timber, and the wide side of the cross section is placed in the middle of the plain concrete base.

[0052] In the present invention, the panel 7 is a cross-laminated wood board with a thickness of not less than 30 mm, a width of not less than 1 m on the long side, and not less than 0.5 m on the short side.

[0053] In the present invention, the hook angle code 4 is made of stainless steel with a thickness of 2 mm and a length of 60 mm. It is arranged along the longitudinal spacing of the wooden keel 2 at a distance of 350 mm. The cross-sectional shape of the hook angle code 4 is an unequal U-shape. The height of the unequal U-shaped cross-section is consistent with the height of the wooden keel 2. The length of the long side is equal to half of the difference between the width of the concrete base 1 and the width of the wooden keel 2. The length of the short side is 8 mm. Each stainless steel hook angle code 4 is fixed to the concrete base 1 using two expansion bolts 3, which serves to limit the wooden keel 2 and serve as a horizontal hook for the flat groove-shaped stainless steel 5.

[0054] In the present invention, the expansion bolt 3 is an M6 expansion bolt, and the surface of the bolt is subjected to anti-corrosion treatment.

[0055] In the present invention, the flat groove stainless steel 5 is made of stainless steel, the length is consistent with the width of the panel 7 single plate, the cross section is groove-shaped, the steel plate thickness is 2mm, the cross-sectional width is 20mm larger than the width of the wooden keel 2, the cross-sectional height is 8mm larger than the thickness of the rubber vibration damping pad 6, and the inner cavity space size of the flat groove stainless steel 5 is 2-3mm larger than the horizontal hook formed by the short limb edge of the stainless steel hook angle code 4 in the width and thickness directions as a deformation release amount to achieve a flexible connection;

[0056] In the present invention, the material of the rubber vibration damping pad 6 is selected from chloroprene rubber and its composite rubber with natural rubber. The length of the rubber vibration damping pad 6 is consistent with the length of the flat groove stainless steel 5, the width is consistent with the width of its inner wall, and the thickness should not be less than 4 mm.

[0057] In the present invention, the inward-retracted "X"-shaped snap connector 9 is made of stainless steel, the steel plate thickness is 2 mm, the linear length is consistent with the width of the wooden keel 2, the cross-section is an "X" shape with narrowed opening edges, the bottom edge width is smaller than the width between the two panels 7, and the distance between the two flange edges is 20 mm wider than the spacing between the panels.

[0058] In the present invention, the T-shaped water-proof cover plate 11 is made of stainless steel with a thickness of 1-1.5 mm. The length of the T-shaped water-proof cover plate 11 is arranged along the full length of the panel 7 seam. The width of the T-shaped water-proof cover plate 11 is 30 mm wider than the panel seam spacing. The edge is thinned by a slope and the thickness is consistent with the T-shaped water-proof cover plate, so that the top surface of the T-shaped water-proof cover plate 11 is flush with the top surface of the orthogonal plywood after installation. A connecting plate and a card plate are hung below the middle of the top plate of the T-shaped water-proof cover plate 11. The width of the card plate is between the narrowed opening spacing and the bottom edge width of the inward-retracted "J"-shaped snap connector 9, so that the T-shaped water-proof cover plate 11 cannot be pulled out after the installation is completed. The T-shaped water-proof cover plate 11 is inserted into the middle of the inward-retracted "J"-shaped snap connector 9 by a side string method. The edge of the T-shaped water-proof cover plate 11 is smeared with waterproof sealant 10 and then pressed down to fix the top edge of the seam panel 7.

[0059] The present invention takes the wooden board size of 2000mm×1200mm×30mm, the board gap spacing of 30mm, the wooden keel cross-sectional size of 50mm×30mm, the spacing of 500mm, and the concrete base cross-sectional size of 150mm×60mm as an example. The construction steps of the connection system are as follows:

[0060] (1) Lay out the lines on the concrete floor and cast a plain concrete cushion along the entire wooden walkway. The cross-sectional size of the concrete cushion base is 150mm×60mm, with a spacing of 500mm. Chisel a V-shaped water guide groove along the keel direction on the concrete floor to prevent rainwater from soaking the wooden keel and the concrete cushion;

[0061] (2) A wooden keel with a cross-sectional size of 50mm×30mm is placed in the center of the concrete cushion layer and is limited on both sides by stainless steel bent edge brackets. The length of a single stainless steel bent edge bracket is 60mm and it is symmetrically arranged on both sides of the wooden keel at intervals of 350mm. The width of the U-shaped bottom plate of the stainless steel bent edge bracket is the same as the thickness of the wooden keel, which is 30mm. The length of the long leg is 50mm and the length of the short leg is 8mm. The long leg of each stainless steel bent edge bracket is fixed to the concrete cushion layer with two M6 expansion bolts at intervals of 30mm.

[0062] (3) Lay out the lines at a distance of 50 mm on the back of the cross-laminated wood panel, and use short screws to fix the non-standard flat-grooved stainless steel with a groove of 75 mm × 12 mm to the back of the cross-laminated wood panel. Apply structural adhesive on the top surface of the inner cavity of the non-standard flat-grooved stainless steel to bond the rubber vibration damping pad with equal length, 70 mm wide and 4 mm thick;

[0063] (4) Push the cross-laminated wood panel with a flat-grooved stainless steel keel on the back side horizontally along the keel direction, so that the horizontal buckle formed by the stainless steel bent corners of each keel slides into the flat-grooved stainless steel cavity on the back of the cross-laminated wood panel. The flat-grooved stainless steel cavity and the bent corners are locked and limited with each other, realizing a concealed flexible connection between the concrete base, the wood keel and the wood panel;

[0064] (5) At the side seam of the board edge, the "X"-shaped snap connector is placed upside down on each wooden keel through which the board seam passes. The bottom width of the "X"-shaped snap connector is 25 mm, and the distance between the two flange edges is 50 mm. One side flange is inserted into the side slot of the previous orthogonal plywood panel, and the embedding depth is 10 mm. The bottom edge of the "X"-shaped snap connector is fixed to the wooden keel with screws;

[0065] (6) Install the next cross-laminated wood panel according to steps (3)-(4). Insert the leading edge of the next wood panel into the other side flange of the "X"-shaped snap connector with an embedding depth of 10 mm.

[0066] (7) The 60mm wide T-shaped watertight cover plate is inserted into the I-shaped clip connector between the board joints along the length direction of the board joint. The width of the horizontal clip plate under the vertical plate of the T-shaped watertight cover plate is smaller than the opening spacing of the I-shaped clip connector to achieve the limiting effect. The bottom edge of the horizontal cover plate of the watertight cover plate and the top edge of the wooden panel are coated with sealant and then pressed down to tighten and fix.

[0067] (8) Repeat steps (3) to (7) and install them in sequence until the wooden plank road is paved.

[0068] The wooden walkway uses large-format cross-laminated wood panels as panels and is connected by a concealed flexible connection system. It has the characteristics of flatness and beauty, concealed connection, deformation release, water isolation and conduction, stability and durability, effectively improving the beauty, comfort, safety and durability of outdoor landscape wooden boardwalks.

[0069] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A concealed flexible connection system for a cross-laminated timber walkway, comprising a concealed flexible connection of a base, a keel, and a panel, a waterproof flexible connection between panel seams, and a concrete base (1), a wooden keel (2), and a panel (7), characterized in that: The concealed flexible connection of the base-keel-panel is used to connect the concrete base (1), the wooden keel (2), and the panel (7); The concealed flexible connection of the base-keel-panel is a first connecting member, which includes a hook angle code (4), an expansion bolt (3), a flat groove stainless steel (5), a short rod screw, and a rubber vibration damping pad (6). The hook angle code (4) is fixed to the bottom of the flat groove stainless steel (5) and fixed to the concrete base (1) through the expansion bolt (3). The wooden keel (2) is located in the flat groove stainless steel (5) and abuts against the upper end of the concrete base (1). The rubber vibration damping pad (6) is fixed in the flat groove stainless steel (5) and abuts against the upper end of the wooden keel (2). The panel (7) is fixed to the flat groove stainless steel (5) through the short rod screw. The water-proof flexible connection between the plate seams is used for the joint connection between adjacent panels (7), and the water-proof flexible connection between the plate seams is a second connection member, which includes an inward-retracted "X"-shaped snap connector (9) and a fixing bolt (8), a sealant (10) and a T-shaped water-proof cover plate (11). The panel (7) is provided with a slot, and the inward-retracted "X"-shaped snap connector (9) slides in the slot. The inward-retracted "X"-shaped snap connector (9) is fixed to the wooden keel (2) by a fixing bolt (8), and the T-shaped water-proof cover plate (11) abuts against the upper ends of the two panels (7); The T-shaped water-blocking cover plate (11) is made of stainless steel with a thickness of 1-1.5 mm. The length of the T-shaped water-blocking cover plate (11) is arranged along the length of the panel (7) seam. The width of the T-shaped water-blocking cover plate (11) is 30 mm wider than the seam spacing. The edge is thinned by a slope. The thickness is consistent with the T-shaped water-blocking cover plate, so that the top surface of the T-shaped water-blocking cover plate (11) is flush with the top surface of the cross-laminated wood after installation. The top plate of the T-shaped water-blocking cover plate (11) is The middle part is hung with a connecting plate and a card plate, the width of the card plate is between the narrowed opening spacing of the inward-retracted "F"-shaped snap connector (9) and the bottom edge width, so that the T-shaped water-proof cover plate (11) cannot be pulled out after installation is completed. The T-shaped water-proof cover plate (11) is inserted into the middle of the inward-retracted "F"-shaped snap connector (9) by a side string method. The edge of the T-shaped water-proof cover plate (11) is smeared with waterproof sealant (10) and then pressed down to fix the top edge of the seam panel (7); The hook angle code (4) is made of stainless steel, has a thickness of 2 mm and a length of 60 mm, and is arranged along the longitudinal spacing of the wooden keel (2) at a distance of 350 mm. The cross-section of the hook angle code (4) is an unequal-sided U-shaped cross-section, the height of the unequal-sided U-shaped cross-section is consistent with the height of the wooden keel (2), the length of the long limb is equal to half the difference between the width of the concrete base (1) and the width of the wooden keel (2), and the length of the short limb is 8 mm. The flat groove stainless steel (5) is made of stainless steel, has a length consistent with the width of the panel (7) single plate, a groove-shaped cross section, a steel plate thickness of 2 mm, a cross-sectional width 20 mm greater than the width of the wooden keel (2), and a cross-sectional height 8 mm greater than the thickness of the rubber vibration damping pad (6).

2. The concealed flexible connection system for a cross-laminated timber walkway according to claim 1, characterized in that: The concrete base (1) is made of plain concrete and is cast on a concrete base, so as to adjust the height of the wooden walkway panel and prevent the wooden keel (2) from being soaked in water.

3. The concealed flexible connection system for a cross-laminated timber walkway according to claim 1 is characterized in that: The wooden keel (2) is made of solid wood or cross-laminated wood, and the wide side of the cross section is placed in the middle of the plain concrete base.

4. The concealed flexible connection system for a cross-laminated timber walkway according to claim 1 is characterized in that: The panel (7) is a cross-laminated wood panel with a thickness of not less than 30 mm, a width of not less than 1 m on the long side and not less than 0.5 m on the short side.

5. The concealed flexible connection system for cross-laminated timber walkways according to claim 1 is characterized in that: The expansion bolts (3) are M6 expansion bolts, and the bolt surfaces are subjected to anti-corrosion treatment.

6. The concealed flexible connection system for a cross-laminated timber walkway according to claim 1, characterized in that: The material of the rubber vibration damping pad layer (6) is selected from chloroprene rubber and its composite rubber with natural rubber. The length of the rubber vibration damping pad layer (6) is consistent with the length of the flat groove stainless steel (5), the width is consistent with the width of its inner wall, and the thickness should not be less than 4 mm.

7. The concealed flexible connection system for cross-laminated timber walkways according to claim 1 is characterized in that: The inward-retracted "J"-shaped snap connector (9) is made of stainless steel, with a steel plate thickness of 2 mm. The linear length is consistent with the width of the wooden keel (2). The cross section is an "J" shape with narrowed opening edges. The bottom width is smaller than the width between the two panels (7). The distance between the two flange edges is 20 mm wider than the distance between the panel seams.

Images