Separated precast prestressed concrete slab type stairway and production process thereof

A concrete slab and prestressing technology, applied in stairs, manufacturing tools, ceramic molding machines, etc., can solve the problems of complex production process and self-heavy slab stairs, and achieve the effect of simple construction process, large span and template saving.

Pending Publication Date: 2020-11-20
河南清水建设科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a separate prefabricated prestressed concrete slab staircase and its production process, which solves the problems of heavy slab staircase and complex production process

Method used

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  • Separated precast prestressed concrete slab type stairway and production process thereof
  • Separated precast prestressed concrete slab type stairway and production process thereof
  • Separated precast prestressed concrete slab type stairway and production process thereof

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Embodiment 1

[0036] Embodiment one: by Figure 1 to Figure 5 Given, the separated prefabricated prestressed concrete slab staircase includes a staircase body 1, and the staircase body 1 sequentially includes an integrally formed upper platform slab 8, a step section slab 10 and a lower platform slab 9 from top to bottom, and the staircase body 1. The prestressed steel bar 5 is arranged along the length direction at the inner lower part. The surface of the upper platform slab 8 and the lower platform slab 9 have reserved mounting holes 12 and ribs 4 for the reserved holes respectively. The stair section slab 10 has a lifting The hanging point 6 and the demoulding lifting point 7, the prestressed reinforcement 5 is provided with a reserved prestressed reinforcement plugging groove 13 at the outlet hole of each plane plate.

Embodiment 2

[0037] Embodiment 2: On the basis of Embodiment 1, the lifting point 6 includes a set of lifting points and two sets of lifting points, the distance between the set of lifting points and the upper platform board 8 and the distance between the two sets of lifting points and the lower platform The distances between the boards 9 are the same, and anti-slip strips 11 are provided on the step surfaces of the step boards 10 .

[0038] In the above-mentioned embodiment, the prestressed steel bar adopts 1570-grade ΦH9.0 stress-relieving spiral rib steel wire.

Embodiment 3

[0039] Embodiment 3: In the above embodiment, each individual staircase body 1 is used as a separated prefabricated prestressed concrete slab staircase, which can be assembled to form an integral prefabricated prestressed concrete slab staircase 3. The concrete strength grade used is C45, and the steel bar The thickness of the protective layer is 20mm.

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Abstract

The invention relates to the technical field of prefabricated buildings, in particular to a separated precast prestressed concrete slab type stairway and a production process thereof. An existing slabtype stairway is large in dead weight and complicated in production process. The separated precast prestressed concrete slab type stairway comprises a stairway body, wherein the stairway body sequentially comprises an upper platform plate, stair section plates and a lower platform plate from top to bottom; prestressed reinforcing steel bars are arranged on the lower part in the stairway body along the length direction; reserved installation holes and reserved hole reinforcing ribs are respectively arranged on the surfaces of the upper platform plate and the lower platform plate; the stair section plates are provided with hoisting points and demoulding hoisting points; and the prestressed reinforcing steel bars are provided with reserved prestressed reinforcing steel bar plugging slots atreinforcing steel bar outlet holes of flat planels. Compared with a traditional precast stairway, 20 percent of concrete can be saved, 30 percent of reinforcing steel bars can be saved, the dead weight is light, fast production can be realized, and the separated precast prestressed concrete slab type stairway and the production process thereof have a favorable development prospect in the technicalfield of prefabricated buildings.

Description

technical field [0001] The invention relates to the technical field of prefabricated buildings, in particular to a separate prefabricated prestressed concrete slab staircase and a production process thereof. Background technique [0002] With the continuous advancement of the concept of sustainable development in our country, the aggravation of the labor advantage crisis, the rapid development of new urbanization, the implementation of concepts such as low-carbon economy and energy conservation and environmental protection, the prefabricated staircase conforms to the "innovation, coordination, The development concept of "green, open and shared" is an inevitable trend in the development of low-carbon economy and green construction. [0003] Compared with the traditional production methods of cast-in-place stairs, prefabricated stairs have significant advantages. Nowadays, prefabricated monolithic buildings have been popularized and developed across the country. In many place...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B23/04B28B1/04B28B1/093B28B7/22B28B7/38E04F11/02
CPCB28B1/045B28B1/093B28B7/225B28B7/388B28B23/04E04F11/02
Inventor 张永举邓超杰吕芹王付广荆浩汪亚洲郝振方段玉龙杨路成张涛
Owner 河南清水建设科技有限公司
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