Precast concrete bi-directional hollow slab and preparation method thereof
A technology of prefabricated concrete slabs and prefabricated concrete, which can be applied to floor slabs, manufacturing tools, building components, etc. It can solve problems such as failure to meet quality requirements and cracking of slab joints, and achieve the effects of shortening the construction period, high prefabrication rate, and convenient construction and installation
Pending Publication Date: 2017-08-11
JILIN JIANZHU UNIVERSITY +1
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Problems solved by technology
[0007] However, the main problem of this hollow slab member with two-way holes is that, like the traditional strip-shaped precast concrete hollow slab, there are common cracks between the slab joints, which cannot meet the quality requirements
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[0029] The present invention proposes a prefabricated concrete two-way hollow slab, see Figure 4 , the prefabricated concrete two-way hollow slab consists of 3 bottom reinforcement bars in the short-span direction, 4 negative moment reinforcement bars in the short-span direction, 5 bottom reinforcement bars in the long-span direction, 6 negative moment reinforcement bars in the long-span direction, 7 precast concrete slabs, and hollow bars in the short-span direction. The hole 8 and the long-span direction hollow hole 9 are formed; the short-span direction bottom reinforcement 3 is arranged at the bottom of the precast concrete slab 7 along the short-span direction of the precast concrete two-way hollow slab; the short-span direction negative moment reinforcement 4 is arranged along the prefabricated The short-span direction of the concrete two-way hollow slab is arranged on the top of the precast concrete slab 7; the bottom steel bar 5 of the long-span direction is arranged a...
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The invention relates to a precast concrete bi-directional hollow slab and a preparation method thereof, and belongs to the field of constructional engineering. The precast concrete bi-directional hollow slab is composed of a short-span-direction bottom reinforcing steel bar, a short-span-direction hogging moment reinforcing steel bar, a long-span-direction bottom reinforcing steel bar, a long-span-direction hogging moment reinforcing steel bar, a precast concrete slab, a short-span-direction hollow bore and a long-span-direction hollow bore. The preparation method for the precast concrete bi-directional hollow slab adopts that a hollow mould is arranged in advance before concrete is poured, and after the poured concrete is formed initially, the hollow mould is detached, so that a bi-directional hollow hole is formed in the precast concrete slab. The preparation method for the precast concrete bi-directional hollow slab is simple in manufacturing technique and equipment and low in preparation cost. The precast concrete bi-directional hollow slab prepared by the preparation method for the precast concrete bi-directional hollow slab is good in quality, convenient to construct and install, full cross-sectional in precast, and high in precast rate, and can be widely applied to assembly type concrete floor slabs; and a worker can go on the slab without need to be maintained in the process of construction, the construction period can be shortened, and the construction speed is high.
Description
technical field [0001] The invention belongs to the field of construction engineering, and relates to a prefabricated concrete slab and a preparation method thereof, in particular to a prefabricated concrete two-way hollow slab and a preparation method thereof. Background technique [0002] my country's urbanization is developing rapidly. At present, the industrialization of construction is imminent. It is very necessary to manufacture prefabricated hollow panels with excellent structural properties to build prefabricated buildings. [0003] The existing components with two-way holes and their preparation methods used in prefabricated concrete floor slabs mainly include the following two types: [0004] One is the Chinese patent document with the publication number "CN102061803A", which discloses "Shear wall structure building and construction method based on prefabricated reinforced concrete formwork with cross holes", which belongs to the field of buildings and constructio...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E04B5/02B28B1/14B28B7/18B28B11/24B28B13/06
CPCE04B5/02B28B1/14B28B7/186B28B11/245B28B13/06
Inventor 孟凡林
Owner JILIN JIANZHU UNIVERSITY