CN112575894B - A self-resetting friction energy-dissipating bolt connection node of wood structure - Google Patents

Abstract

The invention discloses a self-resetting friction energy-consuming bolt connection node of a wood structure, comprising beam steel plates, column steel plates, wooden columns, and wooden beams. There is an installation slot, the interior of the installation slot is clamped with beam steel plates and column steel plates, the number of column steel plates is two, and the two column steel plates are mirrored on both sides of the beam steel plate, and the upper and lower sides of the beam steel plate and the column steel plate are both. An ear plate is fixedly installed, and an SMA wire is fixedly installed on the top of the ear plate. The wood structure self-reset friction energy-consuming bolt connection node, by using friction plate to provide additional damping to the beam-column connection node, and adding superelastic SMA wire can solve the residual displacement after the structure is stressed, so that the connection node has both high energy consumption and self-reset function.

Description

A self-resetting friction energy-dissipating bolt connection node of wood structure

technical field

The invention relates to the technical field of construction, in particular to a self-resetting friction energy-consuming bolt connection node of a wooden structure.

Background technique

Modern beam-column wood structure is one of the main directions of wood structure development in my country. Beam-column and column-foot connection nodes are the basic components of beam-column wood structures. The performance of the nodes is directly related to the reliability of the structure, and has a significant impact on the force distribution and safety performance of the entire structure. Bolt connection has the advantages of simple production and installation. For wood structures, nodes are the main energy-consuming area. The simple bolt-steel plug-in connection method has the problem of insufficient energy consumption. In addition, in the bolt-steel plug-in connection method, due to wood The extrusion of the bolt washer and the nut will cause deformation and shrinkage, so that the steel plate inserted in the wooden component is not subject to sufficient external pressure. Therefore, the traditional bolt-steel insert plate has shortcomings such as low stiffness, poor ductility, and insufficient energy consumption, resulting in wood The overall lateral force resistance of the frame is poor. Therefore, we propose a self-resetting friction energy-dissipating bolted joint of wood structure to solve the above problems.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the present invention provides a wood structure self-resetting friction energy-consuming bolt connection node, which has the advantages of high energy consumption, self-resetting, and high overall strength, and solves the problems raised in the above background technology.

In order to achieve the above purposes of high energy consumption, self-resetting, and high overall strength, the present invention is achieved through the following technical solutions: a wood structure self-resetting friction energy-consuming bolt connection node, including beam steel plate, column steel plate, wood column, wood beam , the wooden beam is vertically installed on the right side of the wooden column, the connection between the wooden column and the wooden beam is provided with an installation groove, and the interior of the installation groove is clamped with a beam steel plate and a column steel plate, and the column steel plate is The number is two, and the two column steel plates are mirrored on both sides of the beam steel plate. The upper and lower sides of the beam steel plate and the column steel plate are fixedly installed with lug plates, and the top of the lug plate is fixedly installed with SMA wires. The side of the column steel plate is provided with a limit slot, and the interior of the limit slot is inlaid with a friction plate, the side of the beam steel plate is provided with an arc-shaped bolt installation hole, the sides of the two beam steel plates and the column steel plate, the connecting wooden member, The sides of the wooden column are provided with mutually matched bolt circular holes, the inner movable sleeves of the bolt circular holes are provided with steel pipes located on both sides of the beam steel plate, and the inner movable sleeves of the steel pipes are equipped with connecting bolts, and the outer movable sleeves of the steel pipes are equipped with connection bolts. One end of the connecting bolt is threadedly sleeved with a connecting nut.

Further, the lug plate is located on the right side of the upper and lower sides of the beam steel plate and the column steel plate, and the lug plate on the upper and lower sides of the beam steel plate and the column steel plate is fixedly connected by four SMA wires, and the SMA wire material is a shape memory alloy, and the The ear plate and the SMA wire form a self-reset structure.

Further, the number of bolt circular holes on the side surface of the column steel plate is five, and the bolt circular holes and the limiting grooves are staggered.

Further, the side of the beam steel plate embedded in the wooden column is provided with a bolt circular hole and four arc bolt mounting holes, the beam steel plate is embedded in the wooden beam with four bolt circular holes, and the beam steel plate is provided with four bolt circular holes. , column steel plate and friction plate form a friction energy dissipation structure.

Further, the connecting wooden member is clamped inside the installation groove of the wooden column, the side surface of the connecting wooden member is provided with a mounting hole that cooperates with the steel pipe, and the diameter value of the mounting hole is larger than the diameter value of the steel pipe.

Further, the steel pipe has a two-section structure, the two sections of the steel pipe are respectively located inside the connecting wooden members on both sides of the column steel plate, and the length value of each section of the steel pipe is the same as the thickness value of the connecting wooden members.

Further, the diameter value of the steel pipe is greater than the diameter value of the connecting bolt, the outer movable sleeve of the connecting bolt is provided with a gasket on one side of the connecting nut, and the gasket is in close contact with one end of the steel pipe.

Beneficial effects:

1. The self-resetting friction and energy dissipation bolts of the wooden structure connect the nodes. The friction plate is used to provide additional damping to the beam-column connecting nodes, and the addition of superelastic SMA wires can solve the residual displacement after the structure is stressed, so that the connecting nodes have high power consumption and self-reset function.

2. The wood structure is connected by self-resetting friction energy-consuming bolts. When the beam-column wood member is subjected to external force, when the external force effect exceeds the maximum static friction force between the beam steel plate and the friction plate, the wood column and the wood beam will rotate relative to each other. At this time, due to the extrusion effect of the connecting nut and the gasket on the steel pipe, the steel pipe presses the column steel plates on both sides inward, so that the steel pipe exerts a certain extrusion effect on the column steel plate and the beam steel plate, which is more conducive to exerting frictional wear. function.

Description of drawings

Fig. 1 is a beam-column joint structure schematic diagram of the present invention;

Fig. 2 is the structural representation of the prestressed casing bolt of the present invention;

Fig. 3 is the schematic diagram of the node member of the present invention;

Fig. 4 is the structural representation of beam-column steel plate explosion of the present invention;

Fig. 5 is the structural schematic diagram of the top after the beam-column steel plate of the present invention is connected;

Fig. 6 is the structural representation of the side surface of the beam steel plate of the present invention;

FIG. 7 is a schematic structural diagram of the side surface of the column steel plate of the present invention.

In the figure: 1, beam steel plate; 2, column steel plate; 3, lug plate; 4, SMA wire; 5, friction plate; 6, bolt round hole; 7, connecting bolt; 8, steel pipe; 9, connecting nut; 10, Arc bolt mounting holes; 11. Gaskets; 12. Limit grooves; 13. Connecting wooden components; 14. Wooden columns; 15. Wooden beams.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments.

Please refer to FIG. 1 to FIG. 7 , the present invention provides a technical solution: a self-resetting friction energy-consuming bolt connection node of a wooden structure, including a beam steel plate 1, a column steel plate 2, a wooden column 14, a wooden beam 15, and the wooden beam 15 is vertical It is installed on the right side of the wooden column 14, and the connection between the wooden column 14 and the wooden beam 15 is provided with an installation slot, and the interior of the installation slot is clamped with a beam steel plate 1 and a column steel plate 2, and the number of the column steel plate 2 is two, and The two column steel plates 2 are mirrored on both sides of the beam steel plate 1, the upper and lower sides of the beam steel plate 1 and the column steel plate 2 are fixedly installed with lugs 3, and the top of the lug plate 3 is fixedly installed with SMA wire 4, and the column steel plate 2 A limit slot 12 is set on the side of the steel plate, and the friction plate 5 is inlaid inside the limit slot 12. The side of the beam steel plate 1 is provided with an arc bolt mounting hole 10, the sides of the two beam steel plates 1 and the column steel plate 2 and the connecting wooden members 13. The side of the wooden column 14 is provided with a bolt circular hole 6 that cooperates with each other, the inner movable sleeve of the bolt circular hole 6 is equipped with a steel pipe 8 located on both sides of the beam steel plate 1, and the inner movable sleeve of the steel pipe 8 is equipped with a connecting bolt 7, a steel pipe 8 The external movable sleeve is provided with a connecting wooden member 13, and one end of the connecting bolt 7 is threadedly sleeved with a connecting nut 9.

The ear plate 3 is located on the right side of the upper and lower sides of the beam steel plate 1 and the column steel plate 2. The beam steel plate 1 and the ear plate 3 on the upper and lower sides of the column steel plate 2 are fixedly connected by four SMA wires 4, and the SMA wire 4 is made of shape memory alloy. The lug plate 3 and the SMA wire 4 form a self-reset structure. When the wooden beam 15 and the wooden column 14 rotate relative to each other, since the beam steel plate 1 and the column steel plate 2 are connected through the lug plate 3 and the SMA wire 4, the SMA wire The self-recovery ability of 4 drives the beam steel plate 1 and the wooden beam 15 to reset, and the SMA wire 4 consumes energy during the reciprocating stretching and recovery and the relative sliding of the friction plate 5 and the beam steel plate 1 to achieve energy consumption and self-resetting. Purpose,

The number of bolt circular holes 6 on the side of the column steel plate 2 is five, and the bolt circular holes 6 and the limit grooves 12 are staggered. The side of the beam steel plate 1 embedded in the wooden column 14 is provided with a bolt circular hole 6 and four arcs. Bolt mounting holes 10, four bolt holes 6 are opened on the side of the beam steel plate 1 embedded in the wooden beam 15, the beam steel plate 1, the column steel plate 2 and the friction plate 5 form a friction energy dissipation structure, and the beam and column are connected by using the friction plate. Additional damping is provided, and the addition of superelastic SMA wire can solve the residual displacement after the structure is stressed, so that the connection node has both high energy consumption and self-reset functions.

The connecting wooden member 13 is clamped inside the installation groove of the wooden column 14, the side of the connecting wooden member 13 is provided with a mounting hole that cooperates with the steel pipe 8, and the diameter value of the mounting hole is larger than the diameter value of the steel pipe 8, which is convenient for the steel pipe 8 to be clamped. into the installation hole inside the connecting wooden member 13, and at the same time, it is convenient to clamp the connecting bolt 7 into the steel pipe 8 to connect the beam steel plate 1 and the column steel plate 2, which reduces the installation difficulty of the device.

The steel pipe 8 is a two-section structure. The two sections of the steel pipe 8 are respectively located inside the connecting wooden members 13 on both sides of the column steel plate 2, and the length value of each steel pipe 8 is the same as the thickness value of the connecting wooden member 13. When the external force acts, when the external force effect exceeds the maximum static friction force between the beam steel plate and the friction plate, the wooden column and the wooden beam will rotate relative to each other. The column steel plate on both sides is extruded inside, so that the steel pipe exerts a certain extrusion effect on the column steel plate and the beam steel plate, which is more conducive to exerting the function of friction and energy dissipation.

The diameter value of the steel pipe 8 is greater than the diameter value of the connecting bolt 7. The outer movable sleeve of the connecting bolt 7 is provided with a gasket 11 on the side of the connecting nut 9, and the gasket 11 is in close contact with one end of the steel pipe 8. The gasket 11 and the end of the steel pipe 8 The parts are in close contact with each other, and the pre-pressure generated by tightening the connecting nut 9 is transmitted to the steel pipe 8 and the column steel plate 2 through the gasket 11, which ensures the effectiveness of the device.

To sum up, the self-resetting friction energy-consuming bolts of the wooden structure are used to connect nodes. When the wooden column 14 and the wooden beam 15 are subjected to external force, when the external force effect exceeds the maximum static friction force between the beam steel plate 1 and the friction plate 5, The wooden column 14 and the wooden beam 15 will rotate relative to each other, that is, the rotation of the beam steel plate 1 will generate sliding friction and dissipate energy; at this time, due to the extrusion effect of the connecting bolt 7 and the washer 11 on the steel pipe 8, the steel pipe 8 will move toward The column steel plates 2 on both sides are squeezed internally, that is, the column steel plate 2 and the beam steel plate 1 in the middle are subjected to the extrusion force, so that the friction and energy dissipation effect is fully exerted when the two rotate relative to each other. When the wooden beam 15 is relative to the wooden column 14 The downward relative rotation occurs, correspondingly the beam steel plate 1 rotates downward, then the lug plate 3 above the beam steel plate 1 drives the SMA wire 4 to stretch, and after the external force is removed, if the unloading restoring force of the SMA wire 4 is greater than the maximum value between the friction plates Static friction force, the SMA wire 4 drives the beam steel plate to recover upward through the lug plate 3, so that the relative displacement between the column steel plate 2 and the beam steel plate 1 is zero and has self-resetting ability; Rotation, the beam steel plate 1 rotates upward, then the lug plate 3 under the beam steel plate 1 drives the SMA wire 4 to play the role of stretching and self-resetting. The energy is consumed in the process, and the purpose of energy consumption and self-resetting can be achieved.

Claims (1)

1. The utility model provides a timber structure is from restoring to throne friction power consumption bolted connection node, includes beam steel board (1), post steel sheet (2), wooden pillar (14), wooden beam (15), its characterized in that: wooden beam (15) are installed perpendicularly in the right side of post (14), the mounting groove has all been seted up with the junction of wooden beam (15) in wooden beam (14), the inside joint of mounting groove has roof beam steel sheet (1) and post steel sheet (2), the quantity of post steel sheet (2) is two, and two post steel sheet (2) mirror image distribution in the both sides of roof beam steel sheet (1), the equal fixed mounting in upper and lower both sides of roof beam steel sheet (1) and post steel sheet (2) has otic placode (3), and the top fixed mounting of otic placode (3) has SMA silk (4), spacing groove (12) have been seted up to the side of post steel sheet (2), and the inside of spacing groove (12) is inlayed and is had friction plate (5), arc bolt mounting hole (10) have been seted up to the side of roof beam steel sheet (1), two the side of roof beam steel sheet (1) and post steel sheet (2), joinery component (13), The side surface of the wood column (14) is provided with bolt round holes (6) which are matched with each other, steel pipes (8) positioned at two sides of the beam steel plate (1) are movably sleeved in the bolt round holes (6), connecting bolts (7) are movably sleeved in the steel pipes (8), connecting wood members (13) are movably sleeved outside the steel pipes (8), and one end of each connecting bolt (7) is sleeved with a connecting nut (9) in a threaded manner;

the ear plates (3) are positioned on the right sides of the upper side and the lower side of the beam steel plate (1) and the column steel plate (2), the beam steel plate (1) and the ear plates (3) on the upper side and the lower side of the column steel plate (2) are fixedly connected through four SMA wires (4), the SMA wires (4) are made of shape memory alloy, and the ear plates (3) and the SMA wires (4) form a self-resetting structure;

the number of the bolt round holes (6) on the side surface of the column steel plate (2) is five, and the bolt round holes (6) and the limiting grooves (12) are distributed in a staggered manner;

one side, embedded into a wood column (14), of the side surface of the beam steel plate (1) is provided with a bolt round hole (6) and four arc-shaped bolt mounting holes (10), one side, embedded into a wood beam (15), of the beam steel plate (1) is provided with four bolt round holes (6), and the beam steel plate (1), the column steel plate (2) and the friction plate (5) form a friction energy dissipation structure;

the connecting wood member (13) is clamped in the mounting groove of the wood column (14), the side surface of the connecting wood member (13) is provided with a mounting hole which is matched with the steel pipe (8), and the diameter value of the mounting hole is larger than that of the steel pipe (8);

the steel pipe (8) is of a two-section structure, the two sections of steel pipe (8) are respectively positioned inside the connecting wood members (13) on the two sides of the column steel plate (2), and the length value of each section of steel pipe (8) is the same as the thickness value of the connecting wood members (13);

the diameter value of steel pipe (8) is greater than the diameter value of connecting bolt (7), the outside movable sleeve of connecting bolt (7) is equipped with gasket (11) that are located coupling nut (9) one side, and gasket (11) and steel pipe (8) one end in close contact with.

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