High-precision high-strength door frame wall for assembly protective door

Abstract

The invention discloses a high-precision high-strength door frame wall for an assembly protective door, comprising a plurality of wall blocks, the wall blocks are fixedly connected; each wall block comprises a concrete wall block, a pre-embedded plate, 90-degree angle steel and a hooping, each wall block is provided with a notch, the pre-embedded plate is arranged on the corresponding concrete wall block at the corresponding notch, one end of the pre-embedded plate stretches into the corresponding concrete wall block and the other end is exposed out of the corresponding notch, the 90-degree angle steel and the hooping are welded on the corresponding pre-embedded plate, the 90-degree angle steel is located in the corresponding notch and the hooping is located in the corresponding concrete wall block, and the hopping is welded with the main reinforcement inside the corresponding concrete wall block. Through a modularized manner, the decomposition mode of the protective door wall and thenumber of each module can be determined on site only according to the door opening size of an equipment cavern, and the protective door modules are assembled to complete the integral installation of the protective door.

Description

technical field [0001] The invention belongs to the field of protective doors, and more specifically relates to a protective door frame wall. Background technique [0002] At present, the protective doors of railway tunnels adopt the form of flat-opening steel structure + fireproof board partition wall. It is required that fireproof seals should be embedded in the gap between the door leaf and the door leaf to meet the requirements of fire prevention (fire resistance limit not less than 3h), explosion resistance (passenger and cargo collinear It should not be less than 0.1MPa, passenger dedicated line should not be less than 0.05MPa), anti-piston wind, anti-fatigue requirements. The door leaf is welded by galvanized steel pipes into an integral steel skeleton; after welding, it is polished and smoothed, and second antirust treatment is carried out. The door leaf is filled with environmentally friendly heat insulation and fireproof material environmental protection perlite bo...

AI Technical Summary

Problems solved by technology

This kind of protective door structure needs to be fixed with chemical bolts or welded with embedded parts on site. The quality of on-site installation cannot be guaranteed, and the tensile strength of the protective door under the action of piston wind for a long time in the tunnel cannot be guaranteed, and the cost is high. Installation not convenient

[0003] For the project where the protective door needs to be added to the existing tunnel, since there is no steel bar reserved on the tunnel lining, the installation of the protective door needs to be fixed on the lining with chemical bolts or welded with embedded parts, and the strength often cannot meet the specification requirements. Under the long-term effect of wind pressure, there is a risk

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