Rail crossing fire shutter and its construction method

Abstract

The present invention provides a rail crossing fire shutter and a construction method thereof. The fire shutter includes: a fire shutter door set at the passage opening opened on the fire barrier, and a threshold set on the ground directly below the fire shutter door; the threshold is set at the position where the rail passes through with the width of the passage of the vehicle. Corresponding gaps are provided with fireproof expansion sealing strips in the gaps. In the present invention, a threshold is installed on the ground directly below the fire shutter door, and a gap corresponding to the passage width of the transportation means is set at the position where the rail passes on the threshold, and a fire expansion sealing strip is arranged in the gap, so that the rail transported The passing width is limited to the expansion range of the fire-proof expansion sealing strip, and it also makes an effective supplement to the fire-proof sealing performance of the fire-proof rolling shutter door, meeting the fire-resistance limit requirements of the fire-proof barrier and meeting its fire-proof, heat-insulation and smoke-proof requirements.

Description

technical field [0001] The invention relates to the technical field of building structures, in particular to a rail crossing fire shutter and a construction method of the rail crossing fire shutter. Background technique [0002] In spent fuel reprocessing facilities, the transfer of product containers between plants often relies on transfer trolleys, and the transfer of spent fuel shielding containers is often carried by trains. The laying of the equipment usually needs to pass through the fire compartment or workshop. At present, it is clearly stipulated in the "Code for Fire Protection of Building Design" GB50016-2014 (2018 edition) that a 3h firewall should be set up between adjacent workshops or between adjacent fire compartments as a barrier. In order to achieve the integrity of the fire barrier, it is usually necessary to set the fire shutter for 3 hours (that is, the fire resistance rating is not less than 3 hours) in the fire barrier. [0003] In the specific desig...

AI Technical Summary

Problems solved by technology

However, in the actual operation process, due to the traffic requirements of the bottom rail, the fireproof and smoke-proof airtightness requirements of the fire barrier cannot be met at the contact part of the fire shutter and the ground, resulting in the fire shutter cannot be completely sealed with the ground, and the fire barrier is not complete. It cannot meet the specification requirements of 3h fire barrier

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