Box-type substation earthquake-resistant structure and construction method thereof

Abstract

The invention discloses a box-type substation earthquake-resistant structure and a construction method thereof. The box-type substation earthquake-resistant structure comprises U-shaped channel steelwelded to an electrical embedded part at the top of a civil engineering foundation, an opening of the U-shaped channel steel is upward, and a pair of earthquake-resistant rubber blocks are symmetrically placed in the U-shaped channel steel. Square steel at the bottom of a box-type substation is movably inserted into the U-shaped channel steel between the two earthquake-resistant rubber blocks, andthe square steel and the U-shaped channel steel share a center line. The box-type substation is movably inserted into the U-shaped channel steel with the upward opening, and the box-type substation is simply installed; and when an earthquake occurs, the square steel has small displacement in the U-shaped channel steel, the friction between the square steel and the U-shaped channel steel can achieve frictional energy dissipation, the earthquake-resistant rubber blocks can achieve buffer energy dissipation, air gaps can increase the deformation of all teeth of the earthquake-resistant rubber blocks, the steepness of earthquake energy capable of being transmitted to the box-type substation is reduced, the energy absorption period is long, and the peak value of the earthquake energy absorbedby the box-type substation is reduced to the greatest extent.

Description

technical field [0001] The invention relates to the field of power distribution and transformation systems, in particular to an anti-seismic structure of a box-type substation, and also relates to a construction method of the anti-seismic structure. Background technique [0002] China is a country with frequent earthquakes, with high frequency, high intensity, shallow focus and wide distribution. Since the 20th century, nearly 800 earthquakes of magnitude 6 or above have occurred in my country, covering all provinces and municipalities except Guizhou, Jiangsu and Zhejiang provinces and the Hong Kong Special Administrative Region. According to preliminary statistics, as many as 550,000 people died in earthquakes in China since 1900, accounting for 53% of the global earthquake deaths; since 1949, more than 100 destructive earthquakes have hit 22 provinces (autonomous regions and municipalities), of Involving 14 provinces in the eastern region, more than 270,000 people were ki...

AI Technical Summary

Problems solved by technology

The above-mentioned rigid connection method is used in earthquake-prone areas (such as the western region of my country). When an earthquake occurs, the box-type substation is prone to damage and power failure, which seriously affects post-earthquake disaster relief and post-earthquake power supply restoration. The specific reasons are as follows: the bottom of the box-type substation The foundation square steel and the civil foundation adopt a rigid connection method, and the seismic energy is transmitted to the inside of the box-type substation, resulting in cracking of electrical components, loosening of electrical connections, causing phase-to-phase short-circuit and phase-to-ground short-circuit, and then the relay protection action is cut off, and the power supply is interrupted

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