A structure to prevent bolt slippage in steel plate shear wall with seams

Abstract

A structure for preventing slippage of connecting bolts between a steel plate shear wall with a vertical seam and a frame beam. The upper and lower ends of the main steel plate with vertical seams are provided with bolt holes for connecting with the upper and lower frame beams, and the bolt holes at the corners of the upper and lower ends of the main steel plate with vertical seams are provided. The arrangement density and the number of rows are larger than those in the middle part; the edges of the main steel plates with vertical seams are stiffened to form a closed system. The present invention adopts a targeted layout form for the bolts connecting the steel plate shear wall with slits and the frame beam, and adopts a closed edge stiffening system at the same time, which overcomes or delays the occurrence of bolt slippage and eliminates the bolt slippage caused by bolt slippage. noise, and avoid the great loss of the good seismic performance of the steel plate shear wall with slots caused by the slippage of the bolts, to ensure that the steel plate shear walls with slots are fully bolted on site so that they can be disassembled and replaced after earthquake damage, and to avoid steel plates with seams Shear walls are subjected to excessive vertical loads. The closed edge stiffening system also solves the corner instability problem of the slotted steel plate shear wall that induces or aggravates bolt slippage.

Description

technical field [0001] The invention belongs to the technical field of structural engineering, and in particular relates to a structure for preventing bolts from slipping in steel plate shear walls with slits. Background technique [0002] The concept of steel plate shear wall with slots was first proposed by Japanese scholars Toko Hitaka et al. in 2002. The basic principle is: open a number of vertical seams on the steel plate, so that the steel plate belt (also known as the columnar part) between the vertical seams works like a bending column, so that the deformation of the original non-slit steel plate mainly shears into a belt seam. The main deformation of the steel plate is bending, which greatly improves the deformation and energy dissipation capacity of the steel plate shear wall with seams. The steel plate shear wall with slots also has the advantages of adjustable stiffness (through the joint parameters), flexible space layout (not connected with columns but only w...

AI Technical Summary

Problems solved by technology

[0009] 1) It brings high-frequency, sharp and piercing noise, which makes it difficult for users to bear;

[0010] 2) Cause the steel plate wall with seam to rotate within the range of the upper and lower installation gaps with the frame beam, and then squeeze the connecting plate of the frame beam to cause its corner instability and damage, and the corner instability will reduce its bearing capacity and deformation and energy consumption

The test shows that this kind of connection is very likely to cause the problem of bolt slippage. Bolt slippage not only brings huge noise, but also leads to a large loss of component ductility and energy dissipation performance

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