Concrete Floor Reinforcement Construction Method
A construction method and concrete technology, which is applied in construction, building maintenance, building construction, etc., can solve problems such as the minimum reinforcement ratio cannot meet the demand, the distribution of reinforcement spacing is large, and the selection of reinforcement specifications is not reasonable, etc., so as to improve the structural mechanical properties , to ensure the effect of synergistic bearing and reduce the main tensile stress
Active Publication Date: 2015-09-09
SHANGHAI XIANDAI ARCHITECTURE ENG & CONSULTING CO LTD
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Problems solved by technology
The minimum reinforcement ratio cannot meet the demand, the selection of reinforcement specifications is not reasonable, and the distribution of reinforcement spacing is too large
Method used
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Embodiment Construction
[0019] This embodiment includes shotcrete 1, steel steering block 2, embedded iron parts 3, prestressed steel strand 4, guide plate 5, pressure steel plate 6, anchor piece 7, high-strength cement slurry 8, mortar protective layer 9, concrete The steel steering block 2 is set at the lower quarter span of the floor slab 10. The thickness of the steel steering block 2 is 35 mm. The steel steering block 2 is welded to the embedded iron part 3 embedded in the concrete floor 10. The thickness of the embedded iron part 3 is 10 mm. The pre-embedded iron parts 3 are welded to the main reinforcement at the lower part of the concrete floor 11, and the shotcrete 1 is set between the two steel steering blocks 2 under the concrete floor 11. The plate 5 is used to fix the prestressed steel strand 4, the prestressed steel strand 4 passes through the slot hole and is fixed on the pressure-bearing steel plate 6 through the anchor 7, the pressure-bearing steel plate 6 is welded to the main reinfo...
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The invention discloses a construction method for strengthening a concrete floor. The method is characterized by including the steps of firstly, drilling slots on the concrete floor; secondly, stripping off a main reinforcement protecting layer of the concrete floor, welding embedded iron parts to main reinforcement of the concrete floor, and welding a steel turning block to each embedded iron part; thirdly stripping off a concrete column longitudinal reinforcement protecting layer of a concrete column, and welding bearing steel plates to concrete column longitudinal reinforcement; fourthly, cleaning concrete floor scraps, and spraying concrete between each two steel turning blocks under the concrete floor; fifthly, mounting a guide plate in each slot of the concrete floor; sixthly, tensioning prestress stranded steel wires with an electrothermal method one day after concrete spraying is completed; seventhly using high-pressure grouting to grout high-strength cement paste into holes, penetrated by the prestress stranded steel wires, in the concrete floor; eighthly, setting cement mortar at the bottom of the concrete floor to serve as a protecting layer.
Description
technical field [0001] The invention relates to a concrete floor, in particular to a concrete floor reinforcement construction method. Background technique [0002] In the construction of concrete slabs, quality accidents often occur due to construction and design reasons. The main reasons for the construction are: premature demolition of the formwork; premature loading of the newly poured concrete; untimely maintenance, lack of strict management during pouring, stepped on the surface negative reinforcement, misplaced bearings, and pouring concrete in rainy days. Design reasons are: the effective height of the concrete floor is not enough. Insufficient reinforcement of concrete slabs. The minimum reinforcement ratio cannot meet the demand, the selection of reinforcement specifications is unreasonable, and the distribution of reinforcement spacing is too large. Excessive concentration of pipelines reduces the cross-section of the concrete floor, thereby causing stress conc...
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IPC IPC(8): E04G23/02
Inventor 罗海军
Owner SHANGHAI XIANDAI ARCHITECTURE ENG & CONSULTING CO LTD