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A concrete slab and prefabricated technology, which is applied to roads, pavements paved with prefabricated blocks, roads, etc., can solve the problems of large size, easily damaged prefabricated concrete slabs, increased road joints, etc.
Inactive Publication Date: 2019-04-05
GUANGDONG UNIV OF TECH
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Problems solved by technology
[0004] The embodiment of the present invention provides a prefabricated concrete slab, which solves the technical problem that the existing prefabricated concrete slab is too large, easily damages the prefabricated concrete slab, and the joints of the road surface are increased if the size is too small
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preparation example Construction
[0062] The present invention also provides a preparation method for the above-mentioned prefabricated concrete slab, comprising the following steps:
[0063] Step 1: According to the size of the prefabricated concrete slab to be prepared, select the corresponding first steel 3 and the second steel 5, and cut and shape them;
[0064] Step 2: connecting the first steel 3 and the second steel 5 to form a steel grid 2;
[0065] Step 3: Fix the steel grid 2 at a position close to the bottom of the formwork of the concrete 1, and then pour high-strength concrete 1 into the formwork;
[0066] Step 4: Carry out formwork removal and maintenance according to the "Technical Specifications for Highway Cement Concrete Pavement Maintenance" until the strength meets the requirements for use;
[0067] The flat steel is connected to the round steel by pressure welding, and the flat steel is welded to the flat steel.
[0068] Preferably, step 2 further includes connecting both ends of the fir...
Embodiment 1
[0074] The size of the prefabricated concrete slab (length × width × thickness): 1500mm × 500mm × 90mm, steel type: steel grid, steel ratio: 1.00%, concrete strength: c55, vertical distance from the central axis of the steel to the bottom of the slab: 2cm, Longitudinal flat steel of the first type steel and frame body: 3 pieces of 30mm×5mm q345 flat steel, second type steel: horizontal round steel.
Embodiment 2
[0076] The size of the prefabricated concrete slab (length × width × thickness): 1500mm × 500mm × 90mm, steel type: steel grid, steel ratio: 1.00%, concrete strength: c55, vertical distance from the central axis of the steel to the bottom of the slab: 2cm, Longitudinal flat steel of the first type steel and frame body: 3 pieces of 30mm×5mm q345 flat steel, second type steel: horizontal round steel.
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Abstract
The invention relates to the technical field of concrete plates, in particular to an assembly type concrete plate. The assembly type concrete plate disclosed by the invention comprises a steel grid mesh and concrete, wherein the steel grid mesh is poured with the concrete to form the assembly type concrete plate; the steel grid mesh comprises first profile steel and second profile steel; multiplepieces of first profile steel and multiple pieces of second profile steel are connected in a crossed mode to form the steel grid mesh; and the first profile steel is longitudinal flat steel, and the second profile steel is transverse flat steel, transverse round steel or transverse twisted square steel. When the concrete plate obtains the same bearing force, the thickness and quality of the concrete plate can be reduced; when a steel ratio of the steel grid mesh is consistent with that of a reinforcing mesh, the steel grid mesh can reduce number of first profile steel and longitudinal flat steel of a frame body by regulating a geometric dimension of the first profile file and the cross section of the longitudinal flat steel of the frame body, so that spacing among the stress steel is increased, pouring construction of concrete is facilitated, and construction efficiency and mechanical properties of the concrete plate are improved.
Description
technical field [0001] The invention relates to the technical field of concrete slabs, in particular to an assembled concrete slab. Background technique [0002] With the rapid growth of my country's traffic volume, in order to meet the increasing traffic demand, the technology of highway construction should be developed in a faster and more efficient direction. Prefabricated concrete pavement technology is a technology that transports prefabricated concrete slabs to the construction site for assembly and subsequent processing to achieve rapid highway traffic. It has the advantages of short construction period, little impact on traffic, high quality panels, low construction cost, environmental protection and energy saving, and is a major trend in future road construction. [0003] However, the prefabricated pavement technology also has certain deficiencies, the most prominent being the size of the prefabricated concrete slab. When the size of the prefabricated concrete sla...
Claims
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Application Information
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