BIM optimization design method based on tunnel main body structure special-shaped steel bars

Abstract

The invention discloses a BIM optimization design method based on tunnel main structure special-shaped steel bars. The BIM optimization design method comprises the following steps: exporting a tunnel main structure model in an IFC format through BIM software and importing the tunnel main structure model into steel bar design software Planbar; creating a model view to determine the line shape of the tunnel main structure; extracting a model shell from the tunnel main body structure model, and normally deviating the distance of the thickness of the protective layer to determine the steel bar trend; segmenting the main body structure according to the distribution spacing of the reinforcing steel bars, and performing curve fitting through origin pro8.0; and generating and placing the reinforcing steel bars according to a command of generating the reinforcing steel bars by Planbar software according to a 3D line. The problem that the shape of the special-shaped steel bar is difficult to determine can be effectively solved, the design efficiency is improved, the design modification and auditing time is shortened, rework caused by inconformity of the steel bar size frequently occurring in the construction process is avoided, the steel bar machining precision is improved, and the construction period and cost are greatly saved.

Description

technical field [0001] The invention relates to the field of building structure design, in particular to a BIM optimization design method based on special-shaped steel bars of a tunnel main structure. Background technique [0002] Rebar is one of the most widely used materials in tunnel structures. Before pouring the concrete of the main structure of the tunnel, the steel bars must be made into a skeleton of a certain specification and form and loaded into the formwork. Since the steel bar shown in the structural construction drawing is the text information formed by the flat method, the concrete operation is to convert the text information of the steel bar into the physical steel bar information according to the flat law, and determine the blanking of the steel bar after considering the lap joint and anchorage according to the specification atlas Length, after the steel bar is processed to form a single steel bar entity of a specific shape and length, and then the single s...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects in the prior art that the shape of special-shaped steel bars is difficult to determine and the efficiency of manual placement is low when creating a BIM model of tunnel main structure steel bars, and to provide a BIM optimization design method based on tunnel main structure special-shaped steel bars to avoid During the construction process, there will often be problems with the size of the steel bars that do not match, resulting in rework, improving the accuracy of steel bar processing, and greatly saving the construction period and cost

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