Novel assembled energy-consuming steel frame

Abstract

The invention provides a novel assembled energy-consuming steel frame which comprises a column, a long beam section, a short beam section and an energy-consuming section. The energy-consuming steel frame is connected with the long beam section and the short beam section to achieve the assembling ability of the steel frame. The energy-consuming section comprises a flange connector and a web connector, and a connector steel web yields to dissipate energy under an earthquake effect. A rectangular steel tube is arranged outside the flange connector to prevent deformation out of plane of the flangeconnector, and the whole structure has stable bearing capacity and excellent energy-consuming capacity. Shearing resistance devices are arranged at the two ends of a base plate of the flange connector to prevent the flange connector from slipping, and the energy-consuming performance of the energy-consuming section is guaranteed. Under the earthquake effect, the main body structure of the novel assembled energy-consuming steel frame always keeps elasticity, plastic deformation is controlled in the energy-consuming section, and the structure is restored after the energy-consuming section is replaced after earthquake. The novel assembled energy-consuming steel frame has excellent energy-consuming capacity and stable bearing force, and can achieve quick restoration after earthquake.

Description

technical field [0001] The invention belongs to the field of anti-seismic technology of structural engineering, and relates to a novel assembled energy-consuming steel frame. Background technique [0002] In order to take advantage of the steel structure's good ductility, strong deformation and energy dissipation capabilities, the steel frame is usually designed based on the principle of "strong column and weak beam". ductile failure. However, in the 1994 Northridge earthquake in the United States and the 1995 Hanshin earthquake in Japan, the expected plastic hinge did not appear at the beam end of the steel frame, but a large number of brittle failures occurred at the beam-column connection. Thereafter, in order to avoid structural brittle failure, the designer set a weakened area at the end of the beam, so that the deformation is concentrated in this area to form a plastic hinge. Although the weakened joints can effectively prevent the brittle failure of the steel frame,...

AI Technical Summary

Problems solved by technology

However, this kind of steel frame with energy dissipation devices still has the following disadvantages: ①The energy dissipation capacity of traditional energy dissipation devices is limited, resulting in low energy dissipation performance of the steel frame, and the bearing capacity will decrease when the side shift is large; ②Consumption When the energy-dissipating device is installed on the flange, it will bear a large horizontal force, causing the bolt joint to slip, thereby reducing its energy-dissipating performance; ③The arrangement of the energy-dissipating device increases the difficulty of post-earthquake structural repair, making it difficult to realize Quick Repairs After an Earthquake

[0003] The above technical defects not only reduce the bearing capacity and energy dissipation capacity of the frame, but also bring great difficulties to the rapid repair of the whole building after the earthquake

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