Anti-explosion pressure relief wall for fabricated substation and construction method thereof

Abstract

The invention provides an anti-explosion pressure relief wall for a fabricated substation and a construction method thereof. The anti-explosion pressure relief wall comprises a wall piece plate and steel columns located on both sides of a wall piece, wherein the wall piece comprises a horseshoe-shaped aluminum alloy profiling plate which is continuously and reversely bent into a horseshoe-shaped concave cavity, the two ends of the aluminum alloy profiling plate are in fit with the steel columns, a wall-penetrating steel bar is located in the middle of the horseshoe-shaped aluminum alloy profiling plate in a penetrating mode, the two ends of the wall-penetrating steel bar are correspondingly located in the steel columns, and the horseshoe-shaped concave cavity of the horseshoe-shaped aluminum alloy profiling plate is filled with a buffer material layer and a fiber light concrete layer from the bottom to the outside. The anti-explosion pressure relief wall is a composite wall made of thehorseshoe-shaped aluminum alloy profiling plate, the buffer material layer and the fiber light concrete layer, and is coated with a polyurea coating and fire-retardant coating, and the two ends of the anti-explosion pressure relief wall are connected with the I-shaped steel columns through spring devices; the wall body can be prefabricated in the factory and installed on site; and the wall body is light and thin and cost-effective, and has high deformation capacity and buffer performance, and quick replacement can be achieved after disaster.

Description

technical field [0001] The invention relates to an explosion-proof pressure relief wall of an assembled substation and a construction method thereof. Background technique [0002] When the main transformer of the substation is severely overloaded, short-circuited, or the internal insulation layer is aging, it may cause internal insulating oil leakage and gaseous oil mist. Once an arc spark occurs, the fuel mist may be ignited and cause an explosion. The safety threat to the staff is also easy to cause damage to other transformers around the main transformer room, and even poses a threat to the structural safety of the entire substation, resulting in huge casualties and economic losses. Therefore, it is necessary to carry out fire and explosion proof settings between transformers. Although the explosion-proof wall using steel plates and steel components has achieved greater ductility, the steel consumption is relatively large and the cost is relatively high. When multi-laye...

AI Technical Summary

Problems solved by technology

At present, most explosion-proof walls have solved the problem of fire and explosion protection of the wall parts themselves, but no better solution has been given for the integration of wall columns

In addition, the rigidity of the wall-column connection will easily deform the steel column during the anti-blast process, resulting in failure of the main structure and low economic benefits

If the wall column connection is flexible, it is easy to fail when it bears the impact load of the explosion, causing the wall to collapse and lose the fire insulation function

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