Steel column and foundation pit connection node structure of a steel structure building

Abstract

The invention discloses a steel column and foundation pit connection node structure of a steel structure building, which includes a fixed base plate, a positioning outer cylinder is installed on the lower end surface of the fixed base plate, and the two are fixedly connected by welding, and the connection cavity is set in the The bottom of the connection cylinder is connected, and the top of the connection cavity communicates with the inflatable cavity. The inflatable cavity is provided on the side walls around the connection cylinder, and two adjacent inflatable cavities communicate with each other. The steel column of the steel structure building and the connection node structure of the foundation pit can use the gravity of the steel column itself when it is placed vertically to drive the structural change to generate air pressure changes, and use the air pressure change and the expansion of the limit plate to stabilize the steel column. The limited support makes the docking more convenient without the need for hoisting equipment to maintain the stability during the welding process. At the same time, the pouring and buoyancy of the concrete itself in the foundation pit can be used to automatically extend the positioning structure under the fixed base plate to ensure that the concrete is solidified. After that with basic stable connection.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a steel column and foundation pit connection node structure of a steel structure building. Background technique [0002] In the process of building construction, it is necessary to first construct the overall frame and load-bearing structure of the building. According to the different types of buildings, the specific shape and structural materials of the load-bearing structure are also different. Among them, in steel structure buildings, the load-bearing The main function is the longitudinal metal steel column, which is generally H steel, and its bottom needs to be installed in the preset concrete foundation pit on the ground, and the connection between the steel column and the foundation pit needs to use the middle connection node structure. However, the existing structure of this class has the following problems in actual use: [0003] The existing joint structur...

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Problems solved by technology

[0004] The object of the present invention is to provide a steel column and foundation pit connection node structure of a steel structure building, to solve the above-mentioned background technology. Before fixed installation, it is necessary to make the butt joint between the steel column and the plate structure accurately to ensure that their centers are aligned with each other. However, the existing plate structure does not have the corresponding precise butt joint structure. It is very troublesome to use lifting equipment for auxiliary stability operation

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