A connection node between a steel pipe column and a steel beam end plate using single-sided connection bolts

Abstract

The invention discloses a connection node between a steel pipe column and a steel beam end plate using single-sided connection bolts, comprising a steel pipe column and a steel beam, the ends of the steel beam are fixedly connected to the end plate, and prefabricated bolts are arranged at the corresponding positions of the end plate and the steel pipe column The prefabricated bolt holes are pierced and fastened with single-sided connecting bolts. The single-sided connecting bolts include bolt columns. One end of the bolt column has threads, and the other end of the bolt column is provided with slots. One end of the spacer is matched with the locking part that hinders the rotation of the spacer, and the other end of the spacer is connected with the bolt post. Before the spacer rotates, the locking part restricts the spacer from being fully embedded. In the slot, after the locking part is released, the pop-up part pops up and rotates the limiting part, and the limiting part protrudes out of the slot. After the on-site installation is in place, insert the single-sided connecting bolts into the prefabricated bolt holes, and tighten the nuts from the outside to complete the assembly of the nodes, realizing the single-sided connection, no welding is required on the construction site, and the degree of assembly is higher.

Description

technical field [0001] The invention belongs to the technical field of steel structure connection, in particular to a connection node between a steel pipe column and a steel beam end plate using single-sided connection bolts. Background technique [0002] The section of the steel pipe column is a closed section, and its connection with the steel beam is more complicated than that of the open section beam-column connection. It is necessary to open temporary hand holes on the steel pipe wall to install the internal nuts. After the bolts are installed, they need to be welded on site to close the temporary hand holes. Weld volume. In order to reduce the amount of welding on the construction site and increase the degree of assembly of the steel structure, single-sided connection bolts can be used in this type of connection to realize unilateral assembly connection nodes. [0003] Single-sided connecting bolts refer to fasteners that only need to be operated on one side of the c...

AI Technical Summary

Problems solved by technology

However, the structure of the expansion bolt is complicated, and a large torque is required to screw the large expansion head into the casing during installation, and the use of the expansion bolt will inevitably cause a great squeeze on the surrounding structure, and even cause damage, affecting the safety of the structure

The hot-melt drilling bolt is a hole with an internal thread formed by hot-melt drilling, and the outer bolt is directly screwed in to complete the fastening installation. The strength of this connection bolt mainly depends on the pull-out strength of the bolt from the hole. The bolt hole The production is complex and requires high precision, but the connection strength is difficult to guarantee

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