Temporary stabilizing structure for bottom bolted single-layer steel column installation and stabilizing method thereof

Abstract

The invention discloses a temporary stabilizing structure for bottom bolted single-layer steel column installation and a stabilizing method thereof. The temporary stabilizing structure comprises adjustable clamping devices, rotatable connecting devices and temporary stabilizing inclined struts. The stabilizing method comprises the steps that a, manufacturing is carried out; b, elevation adjustingnuts and elevation adjusting nut cushion blocks are installed; c, the adjustable clamping devices are installed; d, the rotatable connecting devices are installed; e, the temporary stabilizing inclined struts are installed; f, a steel column and a temporary stabilizing device are hoisted integrally; g, the steel column is installed in place; h, bottom horizontal tie bars are installed; i, column foot retaining nut cushion blocks and column foot retaining nuts are installed; j, mechanical unloading hooks are hoisted; k, secondary grouting of column feet is carried out; l, adjacent steel columns, steel beams and inter-column bracings are installed; m, the temporary stabilizing structure is removed; and n, the steps b-m are repeated. According to the temporary stabilizing structure for the bottom bolted single-layer steel column installation and the stabilizing method thereof, it is ensured that force of anchor bolts on the compressed side is within the yield strength range, so that the stability of a single steel column is maintained, in addition, the construction efficiency is improved, the cost is saved, and damage to an original structure is reduced.

Description

technical field [0001] The invention belongs to the technical field of steel structure engineering, and in particular relates to a temporary stabilizing structure and a stabilizing method for installing a single-layer steel column bolted at the bottom. Background technique [0002] At present, steel structure engineering is developing rapidly and is widely used in various large-span industrial plants, logistics and storage buildings, among which the structural design of single-layer steel columns bolted to the bottom is more common. During the installation process of this type of steel column, after a single steel column is installed in place, the adjacent steel column, steel beam and inter-column support and other structures have not been installed, and the secondary grouting of the steel column foot is difficult to follow up in time, causing the steel column The connection with the foundation cannot meet the design technical requirements in time, which further leads to the...

AI Technical Summary

Problems solved by technology

During the installation process of this type of steel column, after a single steel column is installed in place, the adjacent steel column, steel beam and inter-column support and other structures have not been installed, and the secondary grouting of the steel column foot is difficult to follow up in time, causing the steel column The connection with the foundation cannot meet the design technical requirements in time, which further leads to the small overall lateral stiffness and poor stability of the steel column during installation. Under the action of wind load or other external lateral loads, it is easy to cause one side of the column foot to be compressed. The anchor capsized due to the force exceeding the yield strength

The prior art usually adopts the following two methods to prevent the single-layer steel column from tipping during installation: one is to set the ground anchor on the ground to pull the cable wind, and the cable wind rope is connected to the steel column and the ground anchor. The construction is time-consuming and uneconomical; the second is to erect diagonal braces, which need to weld ear plates on the columns and set ground anchors to fix the diagonal braces. The diagonal braces are connected with the ear plates on the columns and the ground anchors. The installation of the ear plate may have adverse effects on the steel column to be installed, and it is also time-consuming and uneconomical to install ground anchors

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