Replaceable energy consumption connecting node of assembly-type rectangular steel pipe column-H-type steel beam

Abstract

The invention discloses a replaceable energy consumption connecting node of an assembly-type rectangular steel pipe column-H-type steel beam. A rectangular steel tubular column, an H-type steel beam and a replaceable energy consumption connecting force transmitting component are included, the replaceable energy consumption connecting force transmitting component comprises an unequal limb angle steel energy consumption connecting member, a rectangular sleeve tube, a buckling preventing constraint cover plate and a vertical web plate connecting plate; the unequal limb angle steel energy consumption connecting member is connected with the rectangular steel tubular column and a wing plate of the H-shaped steel beam; the buckling preventing constraint cover plate is connected with a weakening area of the unequal limb angle steel energy consumption connecting member; the rectangular sleeve tube sleeves the outer side of the short limb of the unequal limb angle steel energy consumption connecting member and is connected with the rectangular steel tubular column through a bolt; the vertical web plate connecting plate is connected with the rectangular tubular column and the web plate of theH-shaped steel beam. The replaceable energy consumption connecting node has the advantages that the node force transmission is reasonable and reliable, the advantages of building industrialization can be achieved, the replaceable energy consumption connecting force transmitting component is adopted by a node position, the expandability and energy consumption capability of the node are improved, the steel tubular column is not damaged after vibration, and the steel tubular column can be used again by replacing connecting components.

Description

technical field [0001] The invention relates to construction engineering, in particular to an assembled rectangular steel pipe column-H-shaped steel beam replaceable energy-consuming connection node. 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. In the current prefabricated steel structure engineering, open section beams and columns are the mainstream of design and construction, but there is a tendency to be gradually replaced by closed section steel pipes. Compared with hot-rolled H-shaped steel, the flexural modulus of rectangular steel pipe sections is between the main axis and weak The axial direction is the same, and its bearing capacity can be fully exerted in the frame system. However, since the rectangu...

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Problems solved by technology

In the current prefabricated steel structure engineering, open section beams and columns are the mainstream of design and construction, but there is a tendency to be gradually replaced by closed section steel pipes. Compared with hot-rolled H-shaped steel, the flexural modulus of rectangular steel pipe sections is between the main axis and weak The axial direction is the same, and its bearing capacity can be fully exerted in the frame system. However, since the rectangular steel pipe column itself is a closed section, it is difficult to use conventional high-strength bolts for prefabricated connection like the H-shaped steel column. Currently, the commonly used rectangular steel pipe column and H-shaped The bolt connection forms of steel beams mainly include two forms: bolt-through end-plate connection and column wall hole repair welding connection. There are openings on both sides of the wall, which greatly weakens the column section. On the other hand, the precision requirements for beam-column factory processing and on-site construction are high, and the construction efficiency is reduced accordingly; Open a temporary construction hole or cut off the steel pipe wall, install nuts on the inside of the steel pipe through the construction hole, and then repair the temporary construction hole on site. This method not only has low construction efficiency, but also the temporary construction hole destroys the integrity of the original steel pipe. On-site repair welding introduces welding residual stress, reduces its bearing capacity, and does not realize full assembly

[0003] With the development of prefabricated buildings, the assembly of integral steel structure beam-column joints for on-site welding operations limits the rapid development of prefabricated steel structures

In order to avoid a large number of welding on site and improve the degree of assembly, one-way locking high-strength bolts can be used to complete the node connection between rectangular steel pipe columns and H-shaped steel beams. However, the anchor ends of one-way locking high-strength bolts are relatively weak, and the bolts are easy to pull out , the local deformation of the steel pipe wall is relatively large, the above-mentioned deficiencies will greatly reduce the ductility and energy dissipation capacity of the joint, which is not conducive to earthquake resistance and post-earthquake repair

The force of the node area is relatively complex, and it plays an important role in transmitting, distributing internal force and ensuring the integrity of the structure in the frame. It has a major impact on the force and safety of the entire structure, and its destruction often leads to the loss of bearing capacity of the entire frame, or even It is difficult to repair the structure after the collapse

[0004] The above-mentioned deficiencies greatly reduce the ductility and energy dissipation capacity of this node, and the seismic performance is not good

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