Large-span light subway evacuation platform plate and manufacturing process thereof

An evacuation platform, large-span technology, applied in manufacturing tools, ceramic forming cores, mining equipment, etc., can solve the problems of inability to take into account fire prevention, corrosion resistance, crack resistance, difficult and cumbersome construction, heavy weight, etc., and achieve high compressive strength. , facilitate construction, improve the effect of load-bearing and anti-deformation capacity

Pending Publication Date: 2022-06-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a long-span lightweight subway evacuation platform slab and its manufacturing process based on the fact that the existing subway evacuation platform slab is difficult and cumbersome to construct due to its large weight and small span, and cannot take into account fire prevention, corrosion resistance, cracking resistance and other related goals.

Method used

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  • Large-span light subway evacuation platform plate and manufacturing process thereof
  • Large-span light subway evacuation platform plate and manufacturing process thereof
  • Large-span light subway evacuation platform plate and manufacturing process thereof

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0035] Embodiment 1: This embodiment describes a large-span light-weight subway evacuation platform plate, the platform plate includes a hollow plate 1, a steel pipe system 2 and a prestressed tendon 3;

[0036] The steel pipe system 2 is pre-buried in the hollow plate 1, and the prestressed ribs 3 are below the hollow plate 1, forming a mechanical equilibrium system with the steel pipe system 2 and the hollow plate 1;

[0037] The hollow plate 1 includes a main plate 4, a rib foot 5 and a rib beam 6; the main plate 4 includes a plurality of hollow structures, wherein the two sides of the steel pipe system 2 are trapezoidal hollow structures, and the hollow structure away from the steel pipe system 2 has a rectangular cross-sectional shape. , a square or a circle; the lower end of the main plate 4 is provided with a rib foot 5 and a rib beam 6, and the rib beam 6 is perpendicular to the hollow structure of the main plate 4, and penetrates the upper end of the rib foot 5;

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specific Embodiment approach 2

[0042] Embodiment 2: For a large-span light-weight subway evacuation platform plate described in Embodiment 1, the cross-sectional shape of the steel pipe body 12 is one of a circle, a square, or a rectangle. When the rectangular hollow structure is matched with the main body of the round steel pipe, the effect is optimal.

specific Embodiment approach 3

[0043] Embodiment 3: According to the large-span light-weight subway evacuation platform plate described in Embodiment 1, the adjacent two sides of the cross-sectional corners of the rectangular and trapezoidal hollow structures are smoothly connected.

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Abstract

The invention discloses a large-span light subway evacuation platform plate and a manufacturing process thereof, and belongs to the technical field of assembly. In order to solve the problems that the construction speed is affected due to the fact that an existing subway evacuation platform plate is large in weight, difficult to assemble and small in span, and fire resistance, cracking resistance, corrosion resistance and the like cannot be considered at the same time, a novel light-weight high-strength concrete material is developed, and the platform plate takes the novel material as a base body, takes a hollow ribbed structure as a plate type and takes basalt fiber woven ribs as prestressed ribs; rib feet are arranged, a steel pipe system is embedded, and prestress is applied to the lower portion of the plate, so that the hollow plate, the steel pipe system and prestressed tendons form a balance system, and the bottom face of the main plate is pressed but not pulled. The limitation that prestress cannot be applied in an existing platform plate due to plate thickness limitation is broken through. The advantages of materials, prestress and a combined structure are fully exerted, and the manufactured platform plate has the characteristics of light weight, large span, fire resistance, cracking resistance, erosion resistance and the like, and has remarkable economic benefits and wide engineering applicability.

Description

technical field [0001] The invention belongs to the technical field of assembled type, and in particular relates to a large-span light-weight subway evacuation platform board and a manufacturing process thereof. Background technique [0002] The subway evacuation platform is a special escape channel for emergencies set up in the subway tunnels. The subway evacuation platform is generally composed of a platform plate and a support frame. on the shelf. However, due to the narrow tunnel space and the limitations of rails, pipes, cables, etc., hoisting machinery and equipment cannot enter the tunnel for construction, so that the platform plate can only be installed by manpower or light machinery, which limits the weight of the platform plate. If the weight is too large , will cause great difficulties to the construction. Moreover, since the two sides of the platform slab are support frames, under the premise of a certain total length of the tunnel, the smaller the span of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F11/00B28B1/52B28B1/14B28B7/30
CPCE21F11/00B28B1/523B28B1/14B28B7/30
Inventor 董宪章肖会刚刘敏
Owner HARBIN INST OF TECH
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