Anti-seismic dual-function support for rectangular hardwood slotting and clamping and embedding double-arc S-shaped steel plate mortar
By introducing a rectangular hardwood slotted and embedded double-arc serpentine steel plate-high ductility mortar energy dissipation and seismic resistance dual-function support at the nodes of the timber frame structure, the problems of insufficient node stiffness and insufficient energy dissipation function in traditional timber frame structures are solved, and energy dissipation, vibration reduction and functional restoration under moderate and major earthquakes are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-17
AI Technical Summary
Traditional timber frame structures suffer from insufficient stiffness, loose connections, and inadequate energy dissipation during earthquakes, leading to severe damage or collapse of buildings.
A dual-function support system for energy dissipation and seismic resistance is adopted, which consists of rectangular hardwood slotted and embedded with double-arc serpentine steel plates and high-ductility mortar. By connecting rectangular hardwood, double-arc serpentine steel plates, limiting structural bolt rods and bamboo nails at the beam-column joints of the wooden frame, a hardwood-steel plate-bolt limiting structure is formed. This allows the bolt rods to dissipate energy during the sliding process of the long holes in the steel plates under moderate and major earthquakes, and the hardwood works together to restore toughness when the bolt rods are limited under mega-earthquakes.
It significantly improves the seismic efficiency of timber frame joints, expands the joint area, achieves energy dissipation and vibration reduction effects under moderate and major earthquakes, and maintains functional resilience under mega-earthquakes.
Smart Images
Figure CN121675638A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a rectangular hard wood slotting and embedding double-arc serpentine steel plate-high ductility mortar energy dissipation and seismic resistance double-function support, belonging to the field of civil building seismic mitigation and isolation technology. BACKGROUND
[0002] At present, the traditional wood structure has a large seismic safety hazard, and its seismic toughness needs to be improved. Toughness, also known as recoverability, is used to describe the ability of a system to maintain and restore its original function after being disturbed. Building seismic toughness refers to the ability of a building to maintain and restore its original function after being subjected to a specific level of earthquake. To improve the seismic toughness of traditional wood structures, seismic technical measures can be taken, or damping and isolation technical measures can be taken, or both seismic measures and damping and isolation measures can be taken. Previous earthquake disasters have shown that the aging of traditional wood frame structure beam-column joints and the loosening of mortise and tenon connections are the main reasons for the serious damage and even collapse of houses.
[0003] The technical bottleneck problem of improving the seismic toughness of traditional wood frame structure joints is how to improve the seismic toughness of wood frame structure joints through reinforcement and reconstruction. Three interrelated technical problems need to be solved: first, expand the area of wood frame structure joints to improve the stiffness and bearing capacity of the joints, which can be achieved by adding diagonal bracing; second, change the force system of wood frame structure joints to reduce the stress on mortise and tenon connections, which can be achieved by adding diagonal bracing to realize truss system stress; third, propose a hard wood-steel plate composite support with energy dissipation and seismic resistance double functions to overcome the disadvantages of current wood rod support and beam-column connection, which requires additional steel connection for indirect and low-efficiency force transmission, thin-walled steel support prone to compression instability, and lack of energy dissipation and seismic resistance double functions. A rectangular hard wood slotting and embedding double-arc serpentine steel plate-high ductility mortar energy dissipation and seismic resistance double-function support is urgently needed to have the characteristics of function recoverable toughness and seismic resistance under medium and large earthquakes, with the double-arc serpentine steel plate and high ductility mortar biting and energy dissipation during the sliding process of the bolt rod in the long hole of the steel plate, and the function recoverable toughness and seismic resistance under large earthquakes through the cooperation of the slotted hard wood and the bolt rod to limit the position of the steel plate. SUMMARY
[0004] The technical scheme of the present application is a rectangular hardwood slotting and embedding double circular arc serpentine steel plate-high ductility mortar energy dissipation and seismic resistance double function support, which is used for wood frame beam column joint seismic reinforcement.
[0005] To achieve the above object, the present application adopts the following technical scheme:
[0006] The rectangular hardwood slotting and embedding double circular arc serpentine steel plate mortar seismic double function support is connected to the beam column connection joint of the wood frame structure.
[0007] The rectangular hardwood, double circular arc serpentine two-end flat section steel plate, limiting structure bolt rod and bamboo nail are included.
[0008] The inner side of the rectangular hardwood is provided with a slot and a rectangular hardwood high ductility mortar hole, the rectangular hardwood high ductility mortar hole is arranged in the middle of the rectangular hardwood, and the two ends of the rectangular hardwood high ductility mortar hole are connected with the slot.
[0009] The rectangular hardwood is provided with a hardwood round hole through the limiting structure bolt rod on the upper side, and the two ends of the double circular arc serpentine two-end flat section steel plate are respectively welded with a steel plate piece structure.
[0010] The both-end flat section steel plate has flat sections at both ends and a serpentine section in the middle, and the flat sections and the serpentine section are connected in transition; the serpentine section is connected in sequence by two positive semicircular arcs and negative semicircular arcs; the intersection of the positive semicircular arc and the negative semicircular arc is a reverse bending point on the axis of the flat section, the bending moment of the reverse bending point is 0, and the bending moment of the peak point of the positive semicircular arc and the negative semicircular arc is the maximum; the flat section is provided with a long hole of soft steel plate; the limiting structure bolt rod passes through the hard wood round hole at both ends of the rectangular hard wood and the corresponding long hole of the soft steel plate on the flat section to form a hard wood-soft steel plate-bolt rod limiting structure; the bamboo peg is made of natural bamboo; and the rectangular hard wood and the both-end flat section steel plate connected together form an anti-seismic dual-function support component.
[0011] The groove is arranged on the side of the rectangular hard wood high-ductility mortar hole to realize the communication of the high-ductility mortar.
[0012] The rectangular hard wood high-ductility mortar hole is a treasure gourd-shaped hole structure with multiple round holes communicated in the middle of the rectangular hard wood. The rectangular hard wood is processed according to the size of the double-circular-arc serpentine steel plate, and the rectangular hard wood can be embedded into the double-circular-arc serpentine steel plate. The rectangular hard wood is provided with a high-ductility mortar hole, and the high-ductility mortar can be filled into the high-ductility mortar hole through the hard wood grouting hole. The rectangular hard wood is provided with a slot structure with a maximum deformation space for tension and compression, and the double-circular-arc serpentine steel plate is processed to constrain the buckling of the double-circular-arc serpentine steel plate.
[0013] The hard wood grouting hole is a series of round holes processed on the rectangular hard wood for grouting high-ductility mortar. The centers of the series of round holes correspond to the centers of the corresponding high-ductility mortar storage holes, and the high-ductility mortar is filled into the high-ductility mortar hole through the hard wood grouting hole.
[0014] The high-ductility mortar is a composite mortar with a strength grade of M5-M10 and a deformation capacity of more than 3 times that of ordinary mortar, which is mixed by chemical fibers, cement, fly ash, silica ash, medium sand, rubber particles and water.
[0015] The rectangular hard wood bolt round hole is a round hole structure processed on the end section of the slotted rectangular hard wood for passing through the bolt rod and having the same diameter as the bolt rod.
[0016] The rectangular hard wood bamboo peg hole is a round hole structure distributed on the slotted rectangular hard wood for embedding the bamboo peg and having the same diameter as the bamboo peg.
[0017] The aforementioned double-arc serpentine steel plate with straight sections is a steel plate assembly consisting of a serpentine midsection steel plate with two intersecting positive and negative semicircular arcs and welded straight sections at both ends. The serpentine steel plate exhibits unique stress distribution; the intersection of the positive and negative semicircular arcs is the inflection point, precisely located on the axis of the straight sections of the steel plate at both ends. The bending moment at the inflection point is zero, while the bending moment is greatest at the peak of the positive and negative semicircular arcs. After the double-arc serpentine steel plate with straight sections at both ends is embedded in rectangular hardwood, the support exhibits similar tensile and compressive performance under the tensile and compressive forces of the coaxial straight sections at both ends. The straight sections of the serpentine steel plate with straight sections at both ends are sandwiched between the ends of the rectangular hardwood, preventing out-of-plane instability. The elongated holes on the serpentine steel plate with straight sections at both ends interact with the bolt rods and the round holes in the hardwood, enabling the rectangular hardwood and the serpentine steel plate with straight sections at both ends to jointly resist earthquakes.
[0018] The aforementioned serpentine steel plate section with straight sections at both ends of the double-arc serpentine shape is a serpentine section with alternating positive and negative semicircular arcs in the middle.
[0019] The straight sections of the double-arc serpentine steel plate with straight sections at both ends are straight sections of steel plate that extend from the middle section of the serpentine steel plate, which is shaped like a snake with alternating positive and negative semi-circular arcs, to both ends.
[0020] The elongated hole on the straight section of the steel plate is an elongated hole with semicircular ends and a rectangular middle section, which is machined on a straight section of steel plate with double circular arcs at both ends. The diameter of the semicircles at both ends is equal to the diameter of the bolt rod.
[0021] The aforementioned limiting structure bolt rod is a fully threaded internal hexagonal bolt rod of grade 8.8 high strength bolt. The bolt is a general term for the bolt rod and nut system. The aforementioned limiting structure is a hardwood round hole-steel plate long hole-bolt rod limiting structure formed after the bolt rod passes through the round holes at both ends of the rectangular slotted hardwood and the corresponding arc-shaped straight section of the steel plate.
[0022] The bamboo nails are cylindrical bamboo nails made of natural bamboo with a diameter of not less than 10mm. After being coated with white latex, the cylindrical bamboo nails are embedded in the bamboo nail holes distributed on the rectangular hardwood. The bamboo nails serve to position, fix, and strengthen the bonding performance of the white latex on the contact surfaces of the two rectangular hardwoods after they are slotted and sandwiched with double-arc serpentine steel plates with straight sections at both ends. The latex bonding and bamboo nail fixing form a combined connection structure. The bamboo nail fixing is more aesthetically pleasing and does not rust than ordinary steel bolt fixing.
[0023] The steel plate piece welded at the ends of the double-circular-arc serpentine steel plate with flat sections at the ends at 45 degrees is a steel plate piece welded at the ends of the double-circular-arc serpentine steel plate with flat sections at the ends, with a plate thickness not less than 1.5 times the thickness of the double-circular-arc serpentine steel plate with flat sections at the ends, with four bolt holes, and connected with the beam-column joint area of the wood frame, the four bolt holes of the steel plate piece are used for supporting the connection of the ends with the beam-column joint area of the wood frame, when the cross section of the beam-column is a circular section, the steel plate of the steel plate piece is a circular-arc-shaped steel plate bent from a rectangular steel plate with a radius equal to that of the beam-column, when the cross section of the beam-column is a rectangular section, the steel plate of the steel plate piece is a rectangular steel plate, and the welding at 45 degrees is to support the beam-column of the wood frame at an angle of 45 degrees, and the support is connected with the beam-column at an angle of 45 degrees, and the joint has good stress performance.
[0024] The circular-arc-shaped steel plate of the steel plate piece, when the cross section of the beam-column is a circular section, the steel plate of the steel plate piece is a circular-arc-shaped steel plate bent from a rectangular steel plate with a radius equal to that of the beam-column, which can realize full contact of the circular-arc-shaped steel plate with the surface of the beam-column, thereby significantly improving the stress performance of the connection.
[0025] The rectangular steel plate of the steel plate piece, when the cross section of the beam-column is a rectangular section, the steel plate of the steel plate piece is a rectangular steel plate, which can realize full contact of the rectangular steel plate with the surface of the beam-column, thereby significantly improving the stress performance of the connection.
[0026] The bolt hole of the steel plate piece is a circular hole with a diameter not less than 10 mm symmetrically arranged at the four corners of the connecting steel plate, and the circular hole has a size not less than 10 mm from the edge of the connecting steel plate, which is used for embedding the 304 stainless steel expansion bolt and connecting with the beam-column.
[0027] The connection of the steel plate piece at the ends of the double-circular-arc serpentine steel plate with flat sections at the ends with the beam-column is a connection of the rectangular hard wood slot-embedded double-circular-arc serpentine steel plate-high ductility mortar energy-dissipation seismic dual-function support with the beam-column of the wood frame joint area, which is connected by 304 stainless steel expansion bolts, first, holes are drilled on the beam-column of the wood frame joint area at positions corresponding to the four holes of the steel plate piece, the outer diameter of the expansion tube is not less than 10 mm, the hole depth is not less than 10 times the outer diameter of the expansion tube, the surface of the circular-arc-shaped steel plate or the rectangular steel plate of the steel plate piece in contact with the beam-column is coated with structural adhesive, and then the expansion tube is embedded into the corresponding hole of the beam-column and fastened with a nut to realize the firm connection of the steel plate piece at the ends of the support with the beam-column of the joint area.
[0028] Compared with the prior art, the present application has the following advantages:
[0029] The rectangular hard wood slot-embedded double-circular-arc serpentine steel plate-high ductility mortar energy-dissipation seismic dual-function support of the present application is a steel-wood composite support, which has low cost, convenient assembly and construction, can realize standardized design and industrialized preparation, and is easy to popularize and apply.
[0030] The rectangular hard wood slotting and embedding double circular arc serpentine steel plate-high ductility mortar energy dissipation and seismic resistance double function support can significantly expand the wood frame beam column joint area, can make the wood frame joint beam column and the inclined support form a truss stress system, and can greatly improve the seismic efficiency of the wood frame joint.
[0031] The rectangular hard wood slotting and embedding double circular arc serpentine steel plate-high ductility mortar energy dissipation and seismic resistance double function support overcomes the defects that the current wood rod support and the steel connecting piece connecting the beam column are not directly connected, the thin-walled steel support is prone to compression instability, and the appearance is not coordinated with the wood structure and does not have the energy dissipation and seismic resistance double function, and the support has the double function characteristics of the function recoverable toughness seismic resistance under the condition that the bolt rod is limited in the steel plate long hole and the circular arc serpentine steel plate and the high ductility mortar are bitten and energy dissipated during the sliding process of the bolt rod in the steel plate long hole under the condition of moderate earthquake and major earthquake. BRIEF DESCRIPTION OF DRAWINGS
[0032] Figure 1 is a schematic diagram of a rectangular hard wood slotting and embedding double circular arc serpentine steel plate-high ductility mortar energy dissipation and seismic resistance double function support.
[0033] Figure 2 is a schematic diagram of a slotting rectangular hard wood.
[0034] Figure 3 is a schematic diagram of a double circular arc serpentine steel plate with flat sections at both ends.
[0035] Figure 4 is a schematic diagram of a hard wood round hole-steel plate long hole-bolt rod limiting structure.
[0036] Figure 5 is a schematic diagram of a steel plate piece welded at an angle of 45 degrees to the end of the double circular arc serpentine steel plate with flat sections at both ends. DETAILED DESCRIPTION
[0037] The application will be described in detail below in combination with the drawings and examples.
[0038] The rectangular hard wood slotting and embedding double circular arc serpentine steel plate mortar seismic double function support is connected at the beam column connection joint of the wood frame structure;
[0039] The rectangular hard wood slotting and embedding double circular arc serpentine steel plate mortar seismic double function support includes rectangular hard wood 1, double circular arc serpentine steel plate with flat sections at both ends 8, limiting structure bolt rod 12, and bamboo nail 13; two upper and lower staggered double circular arc serpentine steel plates with flat sections at both ends 8 are clamped by two rectangular hard woods 1 and fixed by the limiting structure bolt rod 12 and the rectangular hard wood 1; the two rectangular hard woods 1 are connected by a plurality of bamboo nails 13;
[0040] The inner side of the rectangular hardwood 1 is provided with a slot 2 and a rectangular hardwood high ductility mortar hole 3, the rectangular hardwood high ductility mortar hole 3 is arranged in the middle of the rectangular hardwood 1, and the two ends of the rectangular hardwood high ductility mortar hole 3 are connected with the slot 2; The outer side of the rectangular hardwood 1 is provided with a rectangular hardwood grouting hole 4 which is communicated with the rectangular hardwood high ductility mortar hole 3; The rectangular hardwood high ductility mortar hole 3 corresponds to two double-circular-arc serpentine two-end flat-section steel plates 8 which are arranged in an up-and-down staggered manner;
[0041] The rectangular hardwood 1 is provided with a hardwood round hole 6 which passes through the limiting structure bolt rod 12; The two ends of the double-circular-arc serpentine two-end flat-section steel plate 8 are respectively welded with a steel plate member structure;
[0042] The two ends of the double-circular-arc serpentine two-end flat-section steel plate 8 are flat sections 10, and the middle section is a serpentine section 9, and the flat section 10 and the serpentine section 9 are integrally formed; The serpentine section 9 is sequentially connected by two positive half-circular arcs and negative half-circular arcs; The intersection of the positive half-circular arc and the negative half-circular arc is a reverse bending point on the axis of the flat section 10, the bending moment of the reverse bending point is 0, and the bending moment of the peak point of the positive half-circular arc and the negative half-circular arc is the largest; The flat section 10 is provided with a mild steel plate long hole 11; The limiting structure bolt rod 12 passes through the hardwood round hole 6 at the two ends of the rectangular hardwood 1 and the corresponding mild steel plate long hole 11 on the flat section 10 to form a hardwood-mild steel plate-bolt rod limiting structure; The bamboo nail 13 is made of natural bamboo; The rectangular hardwood 1 and the double-circular-arc serpentine two-end flat-section steel plate 8 form an anti-seismic dual-function support component after being connected.
[0043] Further, the rectangular hardwood 1 is provided with a bamboo nail hole 7 for connecting the bamboo nail 13; The rectangular hardwood high ductility mortar hole 3 clamps and embeds the double-circular-arc serpentine two-end flat-section steel plate 8, and the depth of the rectangular hardwood high ductility mortar hole 3 is the height of the double-circular-arc serpentine two-end flat-section steel plate 8; The bamboo nail 13 is embedded into the distributed bamboo nail hole 7 on the rectangular hardwood 1 after being smeared with latex, and the bamboo nail 13 is used to position, fix and strengthen the latex adhesion performance after the two rectangular hardwoods 1 clamp and embed the double-circular-arc serpentine two-end flat-section steel plate 8, and the combination connection structure of latex adhesion and bamboo nail fixation is adopted between the rectangular hardwood 1 and the double-circular-arc serpentine two-end flat-section steel plate 8.
[0044] Further, the rectangular hardwood high ductility mortar hole 3 is a hole structure of multiple round holes in the middle of the rectangular hardwood 1;
[0045] The rectangular hardwood grouting hole 4 is a series of round holes processed on the rectangular hardwood 1 for pouring high-ductility mortar 5, and the center of the round hole corresponds to the center of the corresponding rectangular hardwood high-ductility mortar hole 3; The high-ductility mortar 5 is poured into and fills the high-ductility mortar hole through the hardwood grouting hole 4;
[0046] The high ductility mortar 5 is a composite mortar with strength grade of M5-M10 and deformation capacity more than 3 times of ordinary mortar, which is made of chemical fiber, cement, fly ash, silica ash, medium sand, rubber particles and water.
[0047] Further, the steel plate member structure comprises a first connecting part in the horizontal direction of the beam and a second connecting part in the vertical direction of the column; the first connecting part and the second connecting part are both made of a steel plate member 14, which is provided with bolt holes 17 for connecting with the beam and the column; the thickness of the steel plate member 14 is not less than 1.5 times the thickness of the double-circular-arc serpentine steel plate 8 with flat sections at both ends; the steel plate member 14 is provided with bolt holes; the bolt holes are used for connecting the ductility anti-seismic support with the beam-column connecting joint of the wood frame structure; when the beam-column cross section is a circular cross section, the steel plate member 14 is a circular-arc-shaped steel plate 17 with the same radius as the beam-column circular cross section; when the beam-column cross section is a rectangular cross section, the steel plate member 14 is a rectangular steel plate 15.
[0048] Further, the rectangular hardwood 1 is a rectangular cross-section prismatic hardwood made of oak, teak or beech and other hardwoods.
[0049] Further, the hardwood round hole 6 is a round hole structure with the same diameter as the limiting structure bolt rod 12, which is processed at the end section of the rectangular hardwood 1 and used for passing through the limiting structure bolt rod 12; the bamboo nail hole 7 is a round hole structure with the same diameter as the bamboo nail 13, which is processed on the rectangular hardwood 1 and used for embedding the bamboo nail 13; the contact surfaces of the two rectangular hardwoods 1 are glued with latex and fixed with the bamboo nail 13.
[0050] Further, the serpentine section 9 can dissipate energy and reduce vibration under medium and large earthquakes.
[0051] Further, the soft steel plate long hole 11 is a long hole structure with the same diameter as the limiting structure bolt rod 12, which is processed at both end sections of the double-circular-arc serpentine steel plate 8 with flat sections at both ends; the limiting structure bolt rod 12 is a full-tap internal hexagonal bolt rod of high-strength bolt, which is connected through a nut.
[0052] Further, the bamboo nail 13 is a cylindrical bamboo nail with a diameter not less than 10 mm.
[0053] Further, the anti-seismic double-function support is clamped and embedded with the double-circular-arc serpentine steel plate 8 with flat sections at both ends through the rectangular hard wood high ductility mortar hole 3 between the beam column, and is fixedly connected, and the steel plate piece 14 is connected with the beam column through the stainless steel expansion bolt; firstly, the holes are punched at the corresponding positions of the bolt holes of the steel plate piece 14 and the beam column in the wood frame node area; secondly, the expansion pipe size is determined, the outer diameter is not less than 10 mm, and the hole depth is not less than 10 times the outer diameter of the expansion pipe; after the structural glue is coated on the surface of the steel plate piece 14 and the beam column in contact with the surface of the expansion pipe, the expansion pipe is embedded into the corresponding hole on the beam column, and finally the firm connection between the steel plate piece 14 at both ends of the ductility anti-seismic support and the beam column is realized through the fastening nut.
[0054] Embodiment 1
[0055] Rectangular hard wood slotted clamping and embedding double-circular-arc serpentine steel plate-high ductility mortar energy dissipation anti-seismic double-function support Figure 1 , slotted rectangular hard wood Figure 2 , double-circular-arc serpentine steel plate with flat sections at both ends Figure 3 , hard wood round hole-steel plate long hole-bolt rod limiting structure Figure 4 , steel plate piece welded at 45 degrees at the end of the double-circular-arc serpentine steel plate with flat sections at both ends Figure 5 : rectangular hard wood 1, slot 2, rectangular hard wood high ductility mortar hole 3, rectangular hard wood grouting hole 4, high ductility mortar 5, rectangular hard wood bolt round hole 6, rectangular hard wood bamboo dowel hole 7, double-circular-arc serpentine steel plate with flat sections at both ends 8, double-circular-arc serpentine steel plate with flat sections at both ends 9, double-circular-arc serpentine steel plate with flat sections at both ends 10, long hole on the flat section steel plate 11, limiting structure bolt rod 12, bamboo dowel 13, steel plate piece welded at 45 degrees at the end of the double-circular-arc serpentine steel plate with flat sections at both ends 14, arc-shaped steel plate of the steel plate piece 15, rectangular steel plate of the steel plate piece 16, bolt hole of the steel plate piece 17.
[0056] The slotted rectangular hard wood 1 is a rectangular cross-section prism hard wood processed from hard broad-leaved tree wood such as oak, fraxinus, beech, etc.
[0057] The slot 2 is arranged at the side of the rectangular hard wood high ductility mortar hole 3, so as to realize the communication of the high ductility mortar 5.
[0058] The rectangular hard wood high ductility mortar hole 3 is a multi-round hole communication treasure gourd hole structure processed in the middle of the rectangular hard wood. It is a slotted structure processed from the rectangular cross-section prism hard wood according to the size of the double-circular-arc serpentine steel plate, which can be embedded into the double-circular-arc serpentine steel plate, filled with the high ductility mortar, and filled with the high ductility mortar, and has the maximum deformation space between the double-circular-arc serpentine steel plate and the slotted rectangular hard wood, and can constrain the instability of the double-circular-arc serpentine steel plate.
[0059] The rectangular hardwood grouting hole 4 is a series of circular holes processed on the rectangular hardwood for grouting high-ductility mortar, the centers of the series of circular holes correspond to the centers of the corresponding high-ductility mortar storage holes, and the high-ductility mortar is grouted into and fills the high-ductility mortar holes through the hardwood grouting hole.
[0060] The high-ductility mortar 5 is a composite mortar with a strength grade of about M5-M10 and a deformation capacity of more than 3 times that of ordinary mortar, which is obtained by mixing chemical fibers, cement, fly ash, silica ash, medium sand, rubber particles and water.
[0061] The rectangular hardwood bolt circular hole 6 is a circular hole structure processed on the end section of the grooved rectangular hardwood 1 for passing through the bolt rod and being equal in diameter to the bolt rod.
[0062] The rectangular hardwood bamboo nail hole 7 is a circular hole structure distributed on the grooved rectangular hardwood 1 for embedding the bamboo nail and being equal in diameter to the bamboo nail.
[0063] The double-circular-arc serpentine flat-section steel plate 8 is a steel plate assembly composed of two positive half-circular arcs, negative half-circular arcs staggered in shape like the middle section of a serpentine steel plate and two flat-section steel plates welded at both ends. The circular-arc serpentine steel plate has a unique stress, the intersection of the positive half-circular arc and the negative half-circular arc is a reverse bending point and is exactly on the axis of the flat-section steel plate at both ends of the circular-arc serpentine, the bending moment of the reverse bending point is 0, and the bending moment of the peak point of the positive half-circular arc and the negative half-circular arc is the maximum. When the double-circular-arc serpentine flat-section steel plate is embedded in the rectangular hardwood, it has the advantage of similar tensile and compressive performance under the tensile and compressive stress of the co-axial flat-section steel plate at both ends. The flat section of the circular-arc serpentine flat-section steel plate is clamped and embedded at both ends of the rectangular hardwood, which can prevent out-of-plane instability. The long holes on the flat-section steel plate interact with the bolt rod and the hardwood circular hole, which can realize the co-seismic resistance of the rectangular hardwood and the circular-arc serpentine flat-section steel plate.
[0064] The double-circular-arc serpentine flat-section steel plate flat-section 10 is a flat-section steel plate section extending to both ends of the double-circular-arc serpentine flat-section steel plate section.
[0065] The double-circular-arc serpentine flat-section steel plate flat-section 10 is a flat-section steel plate section extending to both ends of the double-circular-arc serpentine flat-section steel plate section.
[0066] The long hole on the flat-section steel plate 11 is a long hole with a semicircular end and a rectangular middle part processed on the flat-section steel plate of the double-circular-arc serpentine flat-section steel plate, and the diameter of the semicircular end is equal to the diameter of the bolt rod.
[0067] The limiting structure bolt rod 12: the full tooth inside hexagonal bolt rod of 8.8 grade high-strength bolt, the bolt is the general name of bolt rod and nut system.The limiting structure is that the bolt rod passes through the round hole of the rectangular slotted hardwood at both ends and the long hole of the corresponding circular arc serpentine flat section steel plate at both ends to form a hardwood round hole-steel plate long hole-bolt rod limiting structure.
[0068] The bamboo nail 13: a cylindrical bamboo nail with a diameter of not less than 10 mm made of natural bamboo, which is embedded in the bamboo nail hole distributed on the rectangular hardwood after being coated with white latex.The bamboo nail plays a role in positioning, fixing, and strengthening the two rectangular hardwood contact surfaces after the slotted hardwood is embedded with the double circular arc serpentine steel plate with flat section at both ends, and the latex bonding-bamboo nail fixing is a combined connection structure, which is more beautiful and corrosion-resistant than ordinary steel bolt fixing.
[0069] The steel plate piece 14 welded at 45 degrees to the end of the double circular arc serpentine steel plate with flat section at both ends: a steel plate piece welded at both ends of the double circular arc serpentine steel plate with flat section at both ends, with a plate thickness of not less than 1.5 times the thickness of the double circular arc serpentine steel plate with flat section at both ends, four bolt holes, and connection with the beam column of the wood frame node area.The four bolt holes of the steel plate piece are used for the connection of the end of the support with the beam column of the wood frame node area.When the beam column cross section is circular, the steel plate of the steel plate piece is a circular arc steel plate bent from a rectangular steel plate with the same radius as the beam column.When the beam column cross section is rectangular, the steel plate of the steel plate piece is a rectangular steel plate.The 45-degree welding is to support the wood frame beam column at a 45-degree angle, and the support is connected to the beam column at a 45-degree angle, which has good node stress performance.
[0070] The circular arc steel plate 15 of the steel plate piece: when the beam column cross section is circular, the steel plate of the steel plate piece is a circular arc steel plate bent from a rectangular steel plate with the same radius as the beam column, which can realize full contact of the circular arc steel plate with the beam column surface to significantly improve the stress performance of the connection.
[0071] The rectangular steel plate 16 of the steel plate piece: when the beam column cross section is rectangular, the steel plate of the steel plate piece is a rectangular steel plate, which can realize full contact of the rectangular steel plate with the beam column surface to significantly improve the stress performance of the connection.
[0072] The bolt hole 17 of the steel plate piece: a circular hole with a diameter of not less than 10 mm symmetrically arranged at the four corners of the connecting steel plate, with a circular hole to the connecting steel plate edge size of not less than 10 mm, used for embedding 304 stainless steel expansion bolts and connecting with the beam column.
[0073] The connection of the steel plate piece at the two ends of the double-circular-arc serpentine steel plate with the beam column is a rectangular hard wood slotting and embedding double-circular-arc serpentine steel plate-high ductility mortar energy dissipation and seismic double-function support and beam column connection in a wood frame node area, and 304 stainless steel expansion bolts are used for connection. First, holes are punched on the beam column in the wood frame node area and at positions corresponding to the four holes of the steel plate piece, the expansion tube outer diameter is not less than 10 mm, the hole depth is not less than 10 times the outer diameter of the expansion tube, the surfaces of the circular-arc steel plate or the rectangular steel plate of the steel plate piece in contact with the beam column and the expansion tube surface are coated with structural glue, then the expansion tube is embedded into the corresponding hole on the beam column and the nuts are fastened to realize the firm connection of the support steel plate piece at the two ends with the beam column in the node area.
[0074] Embodiment
[0075] When reinforcing the existing wood frame node, first, the size of the wood frame node and the beam column is measured, the stress requirement is calculated according to the seismic fortification intensity, the design of the rectangular hard wood slotting and embedding double-circular-arc serpentine steel plate-high ductility mortar energy dissipation and seismic double-function support is carried out, the connection structure of the steel plate piece at the two ends of the double-circular-arc serpentine steel plate with the beam column is determined, the support and the connection component are prepared, and the on-site assembly construction is carried out.
[0076] The above is a typical embodiment of the present application, and the implementation of the present application is not limited thereto.
Claims
1. A rectangular hardwood slotted clamping double-arc serpentine steel plate mortar seismic double-function support connected to the beam-column connection node of a wood frame structure; characterized in that It comprises a rectangular hardwood (1), a double-arc serpentine steel plate with flat sections at both ends (8), a limiting structure bolt rod (12), and a bamboo nail (13). Two double-arc serpentine steel plates with flat sections at both ends (8) arranged alternately are clamped by two rectangular hardwoods (1) and fixed to the rectangular hardwood (1) through the limiting structure bolt rod (12). The two rectangular hardwoods (1) are connected by multiple bamboo nails (13). The inner side of the rectangular hardwood (1) is provided with a slot (2) and a rectangular hardwood high-ductility mortar hole (3). The rectangular hardwood high-ductility mortar hole (3) is arranged in the middle of the rectangular hardwood (1), and the two ends of the rectangular hardwood high-ductility mortar hole (3) are connected with the slot (2). The outer side of the rectangular hardwood (1) is provided with a rectangular hardwood grouting hole (4) in communication with the rectangular hardwood high-ductility mortar hole (3). The rectangular hardwood high-ductility mortar hole (3) corresponds to the two double-arc serpentine steel plates with flat sections at both ends (8) arranged alternately. The rectangular hardwood (1) is provided with a hardwood round hole (6) passing through the limiting structure bolt rod (12). The two ends of the double-arc serpentine steel plate with flat sections at both ends (8) are respectively welded with a steel plate member structure. The two ends of the double-arc serpentine steel plate with flat sections at both ends (8) are flat sections (10), and the middle section is a serpentine section (9). The flat section (10) and the serpentine section (9) are integrally formed. The serpentine section (9) is sequentially connected by two positive semicircular arcs and negative semicircular arcs. The intersection of the positive semicircular arc and the negative semicircular arc is a reverse bending point on the axis of the flat section (10). The bending moment of the reverse bending point is 0, and the bending moment of the peak point of the positive semicircular arc and the negative semicircular arc is the maximum. The flat section (10) is provided with a mild steel plate long hole (11). The limiting structure bolt rod (12) passes through the hardwood round hole (6) at both ends of the rectangular hardwood (1) and the corresponding soft steel plate long hole (11) on the flat section (10) to form a hardwood-soft steel plate-bolt rod limiting structure. The bamboo nail (13) is made of natural bamboo. The rectangular hardwood (1) and the double-arc serpentine steel plate with flat sections at both ends (8) form an anti-seismic double-function support component after being connected.
2. The rectangular hardwood slotted clip double-arc serpentine steel plate mortar aseismic dual-function bracing according to claim 1, characterized in that, The rectangular hardwood (1) is provided with a bamboo nail hole (7) for connecting the bamboo nail (13). The rectangular hardwood high-ductility mortar hole (3) clamps the double-arc serpentine steel plate with flat sections at both ends (8). The depth of the rectangular hardwood high-ductility mortar hole (3) is the height of the double-arc serpentine steel plate with flat sections at both ends (8). The bamboo nail (13) is embedded in the distributed bamboo nail hole (7) on the rectangular hardwood (1) after being smeared with latex. The bamboo nail (13) is used to position, fix, and strengthen the two rectangular hardwoods (1) clamping the double-arc serpentine steel plate with flat sections at both ends (8) after the latex adhesive performance. The combination of latex adhesive and bamboo nail fixing is used to connect the rectangular hardwood (1) and the double-arc serpentine steel plate with flat sections at both ends (8).
3. The rectangular hardwood slotted clip double-arc serpentine steel plate mortar aseismic dual-function bracing according to claim 1, characterized in that, The rectangular hardwood high-ductility mortar hole (3) is a hole structure of multiple round holes in the middle of the rectangular hardwood (1). The rectangular hard wood grouting hole (4) is a series of circular holes for grouting high ductility mortar (5) on the rectangular hard wood (1), the center of the circular hole corresponds to the center of the corresponding rectangular hard wood high ductility mortar hole (3), and the high ductility mortar (5) is filled into and fills the high ductility mortar hole through the hard wood grouting hole (4). The high ductility mortar (5) is a composite mortar with a strength grade of M5-M10 and a deformation capacity of more than 3 times that of ordinary mortar, which is mixed by chemical fibers, cement, fly ash, silica ash, medium sand, rubber particles and water.
4. The rectangular hardwood slotted clip double-arc serpentine steel plate mortar seismic dual-function support according to claim 1, characterized in that, The steel plate structure includes a first connecting part in the horizontal direction of the beam and a second connecting part in the vertical direction of the column; both the first connecting part and the second connecting part are made of a steel plate (14) having bolt holes (17) for connecting with the beam and the column; the thickness of the steel plate (14) is not less than 1.5 times the thickness of the double-circular-arc serpentine two-end flat section steel plate (8); the steel plate (14) has bolt holes; the bolt holes are used for connecting the ductility seismic support with the beam-column connection node of the wood frame structure; when the beam-column section is a circular section, the steel plate (14) is a circular-arc-shaped steel plate (17) with the same radius as the beam-column circular section; when the beam-column section is a rectangular section, the steel plate (14) is a rectangular steel plate (15).
5. The rectangular hardwood slotted clip double-arc serpentine steel plate mortar aseismic dual-function bracing according to claim 1, characterized in that, The rectangular hard wood (1) is a rectangular cross-section prismatic hard wood processed from oak, shaddock or beech wood, etc.
6. The rectangular hardwood slotted clip double-arc serpentine steel plate mortar seismic dual-function support according to claim 1, characterized in that, The hard wood circular hole (6) is a circular hole structure with the same diameter as the limiting structure bolt rod (12) processed on the end section of the rectangular hard wood (1) for passing through the limiting structure bolt rod (12); the bamboo nail hole (7) is a circular hole structure with the same diameter as the bamboo nail (13) processed on the rectangular hard wood (1) for embedding the bamboo nail (13); the contact surfaces of the two rectangular hard woods (1) are glued with latex and fixed with the bamboo nail (13).
7. The rectangular hardwood slotted clip double-arc serpentine steel plate mortar seismic dual-function support according to claim 1, characterized in that, The serpentine section (9) can dissipate energy and reduce vibration under medium and large earthquakes.
8. The rectangular hardwood slotted clip double-arc serpentine steel plate mortar seismic dual-function support according to claim 1, characterized in that, The soft steel plate long hole (11) is a long hole structure with the same diameter as the limiting structure bolt rod (12) at both ends of the double-circular-arc serpentine two-end flat section steel plate (8), and the diameters of the semicircles at both ends of the long hole are equal to the diameter of the limiting structure bolt rod (12); the limiting structure bolt rod (12) is a full-tap internal hexagonal bolt rod of high-strength bolt, which is connected through a nut.
9. The rectangular hardwood slotted clip double-arc serpentine steel plate mortar aseismic dual-function bracing according to claim 1, characterized in that, The bamboo nail (13) is a cylindrical bamboo nail with a diameter not less than 10 mm.
10. The rectangular hardwood slotted clip double-arc serpentine steel plate mortar seismic dual-function bracing of claim 1, wherein The anti-seismic double-function support is fixedly connected with the beam column through the rectangular hard wood high ductility mortar hole (3) which is embedded with the double circular arc snakelike steel plate (8) with flat section at both ends and is connected with the beam column through the stainless steel expansion bolt, the bolt hole of the steel plate (14) is punched at the corresponding position of the beam column in the wood frame node area, the expansion pipe size is determined, the outer diameter is not less than 10 mm, the hole depth is not less than 10 times the outer diameter of the expansion pipe, the structure glue is coated on the surface of the steel plate (14) and the beam column in contact with each other and the surface of the expansion pipe, then the expansion pipe is embedded into the corresponding hole of the beam column, and finally the fastening nut is used to realize the firm connection between the steel plate (14) at both ends of the ductility anti-seismic support and the beam column.