Flanged restorable-function steel-framed eccentrically braced system

Abstract

The invention relates to a flanged restorable-function steel-framed eccentrically braced system and belongs to the field of structural engineering. Main components of the system herein and main partsof connection devices can be produced in a factory, so that construction period is greatly shortened, and construction quality is improved. An upper flange cover plate is set in an inner cover plate form subjected to flange cover plate buckling amplitude control. A lower flange cover plate is set in an outer cover plate form, having good performance visibility, changeability and decidability. A self-resetting device ensures predetermined form design objective of the system herein to dissipate seismic energy and also ensures a reduction in post-earthquake repairing cost, and safety of the system herein is improved. The specific design helps ensure that damaged parts of the system herein under the action of seismic load easily occur to easily-changeable high-strength bolts, connection platesand other energy-dissipating components, post-earthquake repairing is facilitated, and the development requirement of restorable-function prefabricated steel structures is satisfied.

Description

technical field [0001] The patent relates to an eccentric support system of a recoverable functional steel frame with a flange, which belongs to the technical field of structural engineering. Background technique [0002] With the acceleration of the urbanization process, the development of the construction field and the continuous improvement of the technical level, coupled with the impact of environmental pollution and resource waste, the defects of poor environmental protection in the traditional building system are gradually exposed, and the green fabricated steel structure has begun to become a building The main types of systems. Compared with the traditional system, this system has significant advantages in terms of construction quality and construction efficiency. "Building blocks" is a representative construction method, which greatly speeds up the construction speed and saves project funds. Applying it to the design and development of various building systems is t...

AI Technical Summary

Problems solved by technology

[0003] The unreasonable design of the frame system causes brittle failure of the structure under the earthquake load, aggravates the earthquake disaster, and threatens the safety of people's lives and property

Existing studies have shown that targeted strengthening of the beam-column joints of the frame system or weakening of specific areas on the beam can achieve the purpose of moving the plastic hinge outward, thereby protecting the beam-column joints and meeting the design requirements of "strong joints and weak members" At the same time, the pre-assembled floor and beam sections can be transported to the construction site for assembly, which can greatly save the time of on-site concrete pouring; in addition, the traditional frame system is difficult to repair after damage or the loss caused by irreparable damage is very huge. There is an urgent need for an earthquake The recoverable functional structure that can restore the function without repair or minor repair has become a research hotspot in the field of international earthquake engineering in recent years.

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