Rectangular steel pipe column-H steel beam full-bolt connection self-rigidity node and construction method

Abstract

The invention discloses a rectangular steel pipe column-H steel beam full-bolt connection self-rigidity node and a construction method. The node comprises a rectangular steel pipe column, an H-shapedsteel beam and a connection force transmission part; the connection force transmission part comprises an upper rectangular hoop, a lower rectangular hoop, upper unequal limb angle steel, lower unequallimb angle steel and a vertical web connection plate; the upper unequal limb angle steel and the lower unequal limb angle steel comprise unequal limb angle steel short limbs connected with the rectangular steel pipe column and unequal limb angle steel long limbs connected with the flange of the H-shaped steel beam; the upper rectangular hoop and the lower rectangular hoop sleeve the outer sides of the unequal limb angle steel short limbs and are connected with the rectangular steel pipe column through one-way locking high-strength bolts; the vertical web connection plate is located on an H-shaped steel beam web, fixed to the rectangular steel pipe column and connected with the H-shaped steel beam web. The node is reasonable and reliable in force transmission, capable of achieving design standardization and manufacturing standardization, accurate and convenient to install, suitable for assembly-type connection of a square steel pipe column and an H-shaped steel beam structure and is asemi-rigid node with good ductility and high anti-seismic and energy-consumption capacity.

Description

technical field [0001] The invention relates to construction engineering, in particular to a rectangular steel pipe column-H-shaped steel beam fully bolted semi-rigid joint and a construction method thereof. Background technique [0002] Since 2016, policies on the industrialization of steel structure buildings and prefabricated buildings have been intensively introduced, and it is proposed to actively promote green buildings and building materials, and vigorously develop steel structures and prefabricated buildings. The prefabricated steel structure system refers to the building produced by manufacturing housing units or components according to uniform and standard building part specifications, and then transporting them to the construction site for assembly in place. It is characterized by light building weight, energy saving and environmental protection, fast construction speed, and high degree of industrialization. It can solve many problems such as the low level of cons...

AI Technical Summary

Problems solved by technology

At present, the main types of semi-rigid joints of rectangular steel pipe column and H-shaped steel beam in steel structure are: the end-plate connection of core-piercing bolts, the connection of the beam flange with the column wall through connectors, and the repair welding connection of the column wall. Although semi-rigid There are various connection forms but there are certain defects: the connection of the core-through bolt end plate requires special long-to-tension high-strength bolts with a through-column section, which requires very high processing and construction accuracy and reduces construction efficiency. When connecting joints, bolt-through end-plate connections are no longer applicable; high-strength bolts are used for the beam flanges of connector-type joints. Due to the force transmission of the diaphragm, the steel pipe column is prone to local buckling of the column wall

The repair welding connection of the opening of the column wall usually needs to open a temporary construction hole or cut off the steel pipe wall, install nuts on the inner side of the steel pipe through the construction hole, and then repair the temporary construction hole on site. This method is not only low in construction efficiency, but also temporary. Holes destroy the integrity of the original steel pipe, and on-site repair welding introduces welding residual stress and reduces its bearing capacity

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