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Concrete-filled square steel tube and steel beam semi-rigid reinforcing joint for preventing progressive collapse

A square steel pipe and concrete technology, applied in building maintenance, construction, building construction, etc., can solve the problems of complex construction and high cost, and achieve the effect of clear and reliable force transmission route, low cost, and avoidance of local buckling

Inactive Publication Date: 2014-01-22
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the current technical problems such as high cost and complicated construction of anti-collapse reinforced beam-column joints

Method used

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  • Concrete-filled square steel tube and steel beam semi-rigid reinforcing joint for preventing progressive collapse
  • Concrete-filled square steel tube and steel beam semi-rigid reinforcing joint for preventing progressive collapse
  • Concrete-filled square steel tube and steel beam semi-rigid reinforcing joint for preventing progressive collapse

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specific Embodiment approach

[0020] Such as figure 1 with figure 2 As shown, the present invention comprises a square steel tube concrete column 1 and an I-shaped steel beam 2, and internal partitions 3 are respectively established in the square steel tube walls corresponding to the upper and lower flanges of the steel beam 2, and on the I-shaped steel beam 2 , and the square steel pipe wall at the lower flange place are respectively provided with a horizontal connecting plate 5, and the horizontal connecting plate 5 is fixed on the flange of the I-shaped steel beam 2 by high-strength bolts 6; Stiffeners 4 are respectively arranged on the walls of the square steel tubes, and together with the horizontal connecting plates 5, corner connectors are welded outside the wall of the steel tube concrete column 1; two U-shaped steel connecting plates 7 are bypassed and welded to On the wall, the U-shaped steel connecting plate 7 is also used as a vertical connecting plate, and is fixed with the I-shaped steel be...

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Abstract

The invention discloses a concrete-filled square steel tube and steel beam semi-rigid reinforcing joint for preventing progressive collapse. The joint comprise a concrete-filled square steel tube column and an I-shaped steel beam. Internal partitions and reinforcing plates are respectively disposed inside and outside the square steel tube walls corresponding to the upper flange and the lower flange of the steel beam. A U-shaped steel connecting plate winds around the square steel tube column wall and is fixed with I-shaped steel beam webs on two sides of the column through high-strength bolts. The beam columns are connected through the U-shaped steel connecting plate and the high-strength bolts. The U-shaped steel connecting plate is also used as a vertical joint connecting plate. The internal partitions under impact load can avoid local buckling of square steel tube column walls. The reinforcing plates can increase joint end bending resistance. The joint is reasonable in structure, uncontinuous beams are integrated while column continuity is also considered, structural integrity and joint ductility are increased, dynamic effect during partial component failure is relieved, and progressive collapse preventing capability is increased.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and relates to a composite structure of steel pipe concrete, in particular to a continuous collapse-resistant reinforcement node suitable for square steel pipe concrete columns and steel beams in a multi-story steel structure. Background technique [0002] In recent years, with the continuous improvement of the level of engineering technology, the building structure is developing towards large-scale and complex. At the same time, the requirements for structural safety are constantly increasing. Generally speaking, if the final failure state of the structure is not proportional to the initial failure state, it can be called progressive collapse. Once the continuous collapse occurs, it generally causes serious loss of life and property, and has a bad social impact. Therefore, how to reduce the impact of local failure on the overall structure and prevent the continuous collapse of...

Claims

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Application Information

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IPC IPC(8): E04G23/02E04B1/58
Inventor 邱婧童建红陈壹竹刘青
Owner SHANDONG UNIV OF SCI & TECH
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