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Self-resetting deformation coordination floor joint structure

A node structure, self-resetting technology, applied to building components, building structures, building types, etc., can solve problems such as screw thread breakage, reduce repair work, and achieve a clear and reasonable force mechanism

Active Publication Date: 2019-12-27
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More importantly, this type of self-resetting joint mainly uses a shape memory alloy screw, but the screw is likely to break at the thread in the case of large deformation of the joint, resulting in more serious consequences

Method used

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  • Self-resetting deformation coordination floor joint structure
  • Self-resetting deformation coordination floor joint structure
  • Self-resetting deformation coordination floor joint structure

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0031] Such as figure 1 As shown, the present invention firstly provides a self-resetting deformation-coordinated floor node structure, including I-shaped notch steel beams 1, I-shaped steel columns 2, and special node domains for connecting I-shaped steel beams and columns. The special node domain includes upper cover plate 3, shear plate 4, cover plate bolts 81\82\83\84\85\86, web bolts 71\72\73\74, first self-resetting core device 5 and second Self-resetting core device 6 . During installation, the shear plate 4 is first welded to the front flange 2001 of the I-shaped steel column, and then connected to the web 1003 of the I-shaped notch steel beam through the web bolts 71\72\73\74.

[0032] Subsequently, if figure 2 As shown in the sectional view of the node along line A-A, one end of the upper cover plate 3 is welded to the front flang...

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Abstract

The invention provides a self-resetting deformation compatibility floor slab joint structure. The self-resetting deformation compatibility floor slab joint structure comprises steel beams, steel columns, connecting units and self-resetting units; the steel beams are fixedly connected to the side parts of the steel columns through the connecting units at intervals and then form floor slab joints; and the two ends of the self-resetting units are correspondingly fastened between the steel beams and the steel columns, and axial recovery resistance to the floor slab joints is formed through the hysteresis characteristic of the self-resetting units. According to the self-resetting deformation compatibility floor slab joint structure, a shape memory alloy ring spring mechanism with the overload protection characteristic is utilized to provide self-resetting driving force and energy dissipation capability for the joints, and deformation compatibility between the joints and a structure system is further ensured through reasonable structural design.

Description

technical field [0001] The invention belongs to the technical field of construction engineering and relates to a self-resetting deformation coordination floor node structure. Background technique [0002] As we all know, although the beam-column joints of ordinary steel structures have good strength and ductility, after strong earthquakes, the entire structure will lose its repair value due to excessive permanent deformation. In order to reduce post-earthquake damage and deformation of beam-column joints, the existing technology uses superelastic shape memory alloys to promote the self-resetting of joints. [0003] On the other hand, this self-resetting technology still relies on the opening and closing of the corners of the beam ends at the joints. The beam expansion effect brought about by this deformation mode will cause the lateral deformation of the entire structural system to be extremely uncoordinated, which will bring great impact to the structure. load and increase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/24E04B1/58E04B1/98E04H9/02
CPCE04B1/2403E04B2001/2406E04B2001/2418E04H9/021E04H9/024
Inventor 王伟方成冯伟康
Owner TONGJI UNIV
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