Device for reinforcement, energy dissipation and seismic mitigation of tenon and mortise joint of timber structure

A technology of shock absorbing device and wooden structure, which is applied in the direction of earthquake resistance, building components, building structure, etc. It can solve problems such as difficulty in restoring the position, impact on building appearance, hidden safety hazards, etc., achieve high social significance and economic benefits, and reduce maintenance and repair cost, the effect of convenient construction and maintenance

Active Publication Date: 2013-12-04
NANJING UNIV OF TECH
6 Cites 15 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0005] 1) Not easy to replace and overhaul
For iron reinforced components, it is difficult to replace them due to corrosion problems, and at the same time brings potential safety hazards; for FRP reinforcement methods, since FRP is pasted on the surface of wooden components with structural adhesive, it is difficult to replace, and it is not easy to repair the reinforced parts. overhaul
[0006] 2) The problem of difficult reset after the earthquake still exists
Traditional reinforcement methods can generally improve the stiffness of mortise and tenon joints, an...
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Abstract

The invention discloses a device for reinforcement, energy dissipation and seismic mitigation of a tenon and mortise joint of a timber structure. The device for reinforcement, energy dissipation and seismic mitigation of the tenon and mortise joint of the timber structure comprises a wood beam, a wood pole, the tenon and mortise joint, embedded steel bars, joint connecting pieces and joint fastening pieces, wherein the wood beam is connected with the wood pole through the tenon and mortise joint, conduits are formed in the upper end surface and the lower end surface of the wood beam or in the two lateral surfaces of the wood beam respectively, the embedded steel bars are embedded in the conduits in advance, the conduits are sealed through small battens and special structural adhesive, one end of each joint connecting piece is connected with a corresponding embedded steel bar, the other end of each joint connecting piece is connected with a corresponding joint fastening piece, and the joint fastening pieces penetrate through the pole body of the wood pole and are fixed on the side, back on to the wood beam, of the wood pole through anchor plates and cushion blocks. The device for reinforcement, energy dissipation and seismic mitigation of the tenon and mortise joint of the timber structure is high in bending resistance, energy-dissipation capacity and ductility, and capable of guaranteeing stability of the structure under the small earthquake condition, achieving serious deformation under the large earthquake condition to control structural damage, and achieving automatic restoration of the structure after an earthquake.

Application Domain

Technology Topic

FastenerLarge earthquakes +3

Image

  • Device for reinforcement, energy dissipation and seismic mitigation of tenon and mortise joint of timber structure
  • Device for reinforcement, energy dissipation and seismic mitigation of tenon and mortise joint of timber structure
  • Device for reinforcement, energy dissipation and seismic mitigation of tenon and mortise joint of timber structure

Examples

  • Experimental program(3)

Example Embodiment

[0034] Example 1
[0035] Such as Figure 1-7 As shown, a reinforcement and energy dissipation device for mortise joints of a wooden structure includes wooden beams 1, wooden columns 2, mortise joints 3, planting bars 4, joint connectors 5 and joint fasteners 6. The wooden beam 1 and the wooden column 2 are connected by a tenon-and-mortise joint 3. The upper and lower surfaces or both sides of the beam end of the wooden beam 1 are provided with a channel 9 in which the planting bar 4 is pre-planted in the channel 9 and passes through the small wood The strip 10 is closed with a special structural glue. One end of the node connector 5 is connected to the planting bar 4, and the other end is connected to the node fastener 6. The node fastener 6 penetrates the shaft of the wooden column 2 and passes through the anchor plate 7. And the spacer 8 are fixed on the side of the wooden column 2 which faces the wooden beam 1.
[0036] Such as Figure 8-10 As shown, the node connector 5 is one of steel, stainless steel or other metal materials, and its shape can be a hollow steel pipe type, trough type, etc., and bolt holes 11 are provided on it. By embedding, the node connector can be completely Hidden into the end of the wooden beam; the nuts and washers used to fasten the planted bars can also be welded to the steel plate first, or can be tightened after the planted bars are cured.
[0037] The cross section of the wooden beam 1 is rectangular, and the cross section of the wooden column 2 is circular. The wood post 2 can be locally reinforced under the anchor plate by driving wood screws or planting bars. The wooden beam 1 is made of logs, sawn timber, glulam (glulam), laminated veneer lumber (LVL), parallel wood chip glulam (PSL), laminated wood chip glulam (LSL), and one of other engineered wood . The tenon-and-mortise joint 3 is a dovetail tenon. The planting bar 4 is one of screw steel, screw, round steel, steel pipe or FRP. The node fastener 6 uses steel bars, screws, steel pipes or shape memory alloys. The material of the anchor plate 7 is steel or hardwood. The anchor plate 7 is embedded in the wooden column 2 and keeps the outer surface of the anchor plate 7 and the wooden column 2 flush. The spacer 8 is made of metal material or hardwood.

Example Embodiment

[0038] Example 2
[0039] Such as Picture 11 As shown, there is a device for strengthening and energy-consuming damping of wooden structure tenon-and-mortise joints. The rest of the structure is the same as that of Embodiment 1, except that the cross section of the wooden column 2 is square.

Example Embodiment

[0040] Example 3
[0041] Such as Picture 12 with 13 As shown, there is a device for strengthening and energy-consuming damping of a tenon-and-mortise joint in a wooden structure. The rest of the structure is the same as that of Embodiment 1, except that the tenon-and-mortise joint 3 is a through tenon.
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Description & Claims & Application Information

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