Heavy type wood frame self-resetting node

Abstract

The invention relates to a heavy type wood frame self-resetting node. The heavy type wood frame self-resetting node comprises a wooden beam, a wooden column, beam-end energy-consuming profile steel, a node area column reinforced steel plate and prestressed reinforcement, the wooden beam and the wooden column are connected through the profile steel and common bolts, the prestressed reinforcement longitudinally penetrates through the wooden beam and penetrates through the wooden column, and the end, opposite to the wooden beam, of the wooden column is fixed through an anchor, disk-shaped springs and anchor backing plates. According to the heavy type wood frame self-resetting node, higher bending resistance capacity and energy dissipation capacity are achieved, under a medium earthquake or a large earthquake, the pressure stress of one side of the beam end disappears, the beam end is opened, the beam-end energy-consuming profile steel transmits the shear force and provides rotational stiffness, the structure has large deformation but is not damaged, the prestressed reinforcement is located in an elastic state, after the earthquake action, damage and residual deformation do not exist in the wooden beam and the wooden column, under the action of the prestressed reinforcement, the beam end returns back to an initial state, and the ideal effects that the structure is stable under the small earthquake, the structure has the large deformation but is not damaged under the large earthquake, and the structure achieves self resetting after the earthquake are achieved. In the long-time using process, the disk-shaped spring is arranged at the anchor end, and the prestress loss problem caused by wood creep is relieved.

Description

technical field [0001] The invention mainly belongs to the field of civil engineering, and relates to a beam-column joint of a heavy wood frame, which is mainly (but not exclusively) used for the beam-column joint of a new wood frame structure. Background technique [0002] The heavy wood frame system is a structural form widely used in countries all over the world. It is composed of wooden components with large spacing and large cross-section. It is the basic method to combine architectural functions and wood aesthetics when building wooden houses. It is suitable for the construction of residential buildings, libraries, gymnasiums, railway stations, shopping centers, exhibition halls, museums, concert halls and other commercial and public buildings. The heavy wood frame system has the following structural advantages: flexible design, simple and quick construction, good wind resistance, good durability, energy saving and environmental protection, comfortable and beautiful. ...

AI Technical Summary

Problems solved by technology

[0004] 1) Under the earthquake, the failure mode of the beam-column joints of the heavy-duty wooden frame is often unpredictable. When the wood enters the plasticity, it is difficult to repair, and the structure produces a large residual deformation. Although the safety of the users can be guaranteed to a certain extent, the Structures are often unusable after earthquakes, resulting in significant economic losses

[0005] 2) Commonly used heavy-duty wooden frame beam-column joints have low rigidity, and are designed as hinged joints in structural design. Insufficient joint stiffness is a restrictive factor for heavy-duty wooden frame structures, especially for multi-storey heavy-duty wooden frame structures that require a large number of supports , which affects the beauty of the structure to a certain extent, and also makes its building performance greatly reduced

[0006] 3) Commonly used prestressed timber members seldom consider the influence of timber creep, and the prestress loss caused by timber creep is a problem that cannot be ignored in the use of prestressed heavy timber frame structures

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