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Self-resetting prestressed laminated wood frame structure

A frame structure and prestressing technology, used in building components, building structures, earthquake resistance, etc., can solve problems such as insufficient energy dissipation capacity, brittle splitting failure of joints, and large residual deformation, so as to improve seismic performance and prevent brittle splitting. The effect of crack damage and reduction of residual deformation

Active Publication Date: 2018-08-10
SHANGHAI RES INST OF BUILDING SCI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to overcome the problems of large residual deformation of the existing wooden frame structure, brittle splitting failure of joints, and insufficient energy dissipation capacity, and proposes a self-resetting prestressed glued wood frame structure, through prestressing technology and ductility Connector design to realize self-resetting of glulam frame after earthquake and avoid brittle splitting damage of frame joints

Method used

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  • Self-resetting prestressed laminated wood frame structure
  • Self-resetting prestressed laminated wood frame structure
  • Self-resetting prestressed laminated wood frame structure

Examples

Experimental program
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Embodiment 1

[0023] as attached Figure 1~4 As shown, a self-resetting prestressed glulam frame structure, which includes glulam beams 1, glulam columns 2, reinforced concrete foundation 3, prestressed steel bars 4, column foundation metal connectors 5 and beam-column metal connectors 6. The glued wood column 2 is fixed on the reinforced concrete foundation 3 by using the metal connector 5 of the column foundation, and the glued wood beam 1 and the glued wood column 2 form a frame structure by using the beam-column metal connector 6;

[0024] The column base metal connector 5 includes a steel column shoe 501, connecting bolts 502, column shoe and foundation connecting steel bars 503 and column base stiffeners 504, and the glued wood column 2 and steel column shoe 501 are connected through the connecting bolts 502 connection, the steel column shoe 501 is connected to the reinforced concrete foundation 3 by using the column shoe and the foundation connecting steel bar 503, and the glued wood...

Embodiment 2

[0031] as attached Figure 5 As shown, the glulam beam 1 is provided with a slot 601a at a position corresponding to the first outer steel plate 601 and the second outer steel plate 602, and the inner rib 605 is installed in the slot 601a. Other structures are the same as in Embodiment 1.

[0032] The present invention provides a self-resetting prestressed glulam frame structure, in which prestress is applied to the glulam frame to increase the horizontal stiffness of the frame, to realize self-adaptation during earthquakes and self-reset after earthquakes, and to reduce structural residues out of shape. Utilizing the excellent mechanical properties of glulam, combined with the beam-column connection form of ribbed outsourcing steel plates, it can effectively prevent brittle splitting damage of joints, enhance the rotational capacity and ductility of joints, and form an efficient and stable rotational energy consumption mechanism of joints, thus improving conventional joints....

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Abstract

The invention discloses a self-resetting prestressed laminated wood frame structure. The self-resetting prestressed laminated wood frame structure is characterized by comprising laminated wood beams (1), laminated wood columns (2), a reinforced concrete foundation (3), prestressed steel bars (4), column foundation metal connectors (5) and beam-column metal connectors (6), wherein the laminated wood columns (2) are fixedly arranged on the reinforced concrete foundation (3) through the column foundation metal connectors (5); the laminated wood beams (1) and the laminated wood columns (2) form aframe structure through the beam-column metal connectors (6). Prestress is applied in a laminated wood frame to increase the horizontal stiffness of the frame, so that self-adaptation during shock andself-resetting after shock of the frame are realized, and the residual deformation of the structure is reduced. With the excellent mechanical property of laminated wood in conjunction with the beam-column connection form of a ribbed outer steel plate, brittle splitting failure of joints is effectively prevented, the rotational capacity and ductility of the joints are enhanced, and an efficient and stable rotational energy dissipation mechanism of the joints is formed, so that the shock resistance of the conventional laminated wood frame structure is improved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to a prestressed glued wood frame with self-resetting ability and ductile energy dissipation capacity, which is used for a multi-storey wood frame structure with high requirements on seismic performance. Background technique [0002] At present, my country is vigorously promoting the development of modern multi-storey wood structures, and the application of glued wood frame structures is the most common. Glued wood is a wood product made of boards with a thickness of 20mm to 45mm, which are laminated and glued along the direction of the grain, also known as laminated wood. It has better mechanical properties than ordinary wood. Due to the low overall horizontal stiffness of the conventional wood frame structure, large deformations are likely to occur under horizontal loads such as earthquakes and winds, and the residual deformation after the earthquake is rela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/19E04B1/26E04B1/98E04H9/02
CPCE04B1/19E04B1/26E04B1/2604E04H9/02
Inventor 冷予冰许清风陈玲珠
Owner SHANGHAI RES INST OF BUILDING SCI CO LTD
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