Large-span beam construction method based on hot-rolled high-strength steel bars
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A technology of high-strength steel bars and construction methods, applied in beams, joists, truss beams, etc., can solve the problems of difficult production and transportation of precast concrete beams, delaying construction progress, etc. The effect of the number of tendons
Inactive Publication Date: 2020-10-16
广东珠江建筑工程设计有限公司
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[0004] In view of the related technologies mentioned above, the inventor believes that there is a defect that the prefabricated concrete beams in this related technology are difficult to produce and transport when the construction personnel are constructing the long-span beams, thus delaying the construction progress
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[0036] The following is attached figure 1 The application is described in further detail.
[0037] The embodiment of the present application discloses a construction method of a long-span beam based on hot-rolled high-strength steel bars. refer to figure 1 , including the following steps:
[0038] Measure the wire. First, clean up the construction site to ensure the cleanliness of the construction site; then, according to the design drawings, the surveyors use ink lines to mark the specified positions.
[0039] column construction. The steel bars used for the frame columns are bound, and then the formwork for the frame columns is installed. The template is a 920*1800mm film-coated board with a thickness of 15mm. Use column hoops on the outside of the formwork of the frame column to fix, and the distance between adjacent column hoops is 400mm. Each column hoop is made of four steel pipes fixed by welding, and the opposite steel pipes are provided with pull bolts to stren...
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Abstract
The invention relates to a large-span beam construction method based on hot-rolled high-strength steel bars. The method comprises the following steps that S10, surveying and setting-out is carried out, specifically, surveying is carried out according to a design drawing, and marking is carried out at a construction position by using an ink line; S20, column construction is carried out, specifically, the steel bars of frame columns are bound, then forms of the frame columns are installed, and concrete is poured into the forms; S30, steel pipes are erected, and a form support is built; S40, beamconstruction is carried out, specifically, a beam bottom form is installed, then the steel bars are bound on the bottom form, after binding is completed, side forms of a beam are installed, and finally concrete is poured into the forms; S50, concrete curing is conducted, specifically, concrete is covered with a material, and regular moisturizing and wet curing are conducted; and S60, the forms and supporting frames are dismantled, specifically, all the forms and all the supporting frames are dismantled in sequence. The construction method has the effects of standard construction, high construction efficiency and high strength.
Description
technical field [0001] The present application relates to the field of beams, in particular to a construction method for long-span beams based on hot-rolled high-strength steel bars. Background technique [0002] A beam is a building component that bears vertical loads and is mainly subjected to bending. [0003] The patent with the notification number CN201202217Y discloses a prefabricated concrete beam, which includes a beam body composed of steel bars and concrete wrapped with steel bars. The top surface of the beam body has a plurality of stirrups whose bottom ends are embedded in the concrete and whose top ends are exposed to the top surface, and A plurality of main reinforcements fixedly connected with a plurality of stirrups, the main reinforcement is arranged along the length direction of the beam main body, and there is a gap between the bottom of the main reinforcement at the lowest position and the top surface of the beam main body. [0004] With regard to the ab...
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