Chengdu steel structure project judgment how to judge

Category： Industry News

Time：2020-07-06

The steel structure workshop skeleton is a stable structure formed by interconnection of columns, beams (or trusses) and supports. Bears and transmits all loads and external effects to the foundation. However, in the design, the plant skeleton is often decomposed into a flat system, that is, the horizontal frame of the plant (referred to as the steel structure workshop frame) and the longitudinal structure of two independent systems. The errors caused by this practice can be partially compensated for in spatial work that approximates the consideration of the structure. Steel structure workshop steel structure workshop frame is the main load-bearing structure of the plant skeleton. It is a planar structure consisting of columns and frame beams, and all transverse water loads and most vertical loads are transmitted to the foundation through the plant frame. In industrial buildings, steel structure workshop frames have the following three most common structural types; 1. Single-layer steel structure workshop frame - a single-layer frame composed of plant step columns and frame beams (roof trusses or roof beams, articulated or just connected at the top of the column (when the column roof is hinged, it can be called a workshop row frame), 2. Single-layer rigid frame - a single-layer frame mouth just connected by equal section or gradient section columns and frame beams at the top of the column 3. The multi-layer frame is a multi-layer frame connected by columns and roof beams (or trusses) and roof beams "or roof trusses". , engineering judgment

To use structural software correctly, an "engineering judgment" should also be made on its output. For example, evaluate the isotropic period, total shear force, deformation characteristics, etc. According to the Engineering Verdict, choose whether to modify the model for reanalysis or correct the calculation results

Different software will have different applicable conditions. Beginners should be fully clear. In addition, the calculation in engineering design and the accurate mechanical calculation itself often have a certain distance, in order to obtain a practical design method, sometimes the assumption of a large error is used, but for this error, the safety of the structure will be ensured by "applicable conditions, concepts and construction". In steel structure design, "applicable conditions, concepts and construction" is more important than quantitative calculation

Engineers should not overly trust and rely on structural software. An American scholar once warned: "It is only a matter of time before the misuse of computers causes structural damage and causes disaster." ”

Focusing on conceptual design and engineering judgment is the way to avoid such engineering disasters

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