A construction method for three-way oblique beams

Abstract

The invention discloses a construction method of a three-way skewed beam. The construction method comprises the steps of 1, determining a scheme of a supporting structure; 2, constructing the supporting structure, wherein after a scaffold is set up, multiple sets of profile steel keels of which the direction is the same as that of a main beam are installed at the upper end of a stand rod in sequence; 3, propping up templates and binding reinforcing steel bars, wherein the lateral template is a triangular box mold body, and the box mold body comprises three vertical templates and an corner member which makes the three vertical templates integrally connected; 4, forming the three-way skewed beam. According to the construction method of the three-way skewed beam, the method is simple, the design is reasonable, the investment cost is low, the achievement is convenient, and the using effect is good, through the adoption of the scheme of the supporting structure of the scaffold-profile steel keels, the balanced stress among all beams of the three-way skewed beam is improved, the stress span of the first beam and the second beam is effectively reduced, and the deflection control over the three-way skewed beam is improved; meanwhile, a conventional template material is adopted in the box mold body, thus field batch production can be achieved, and a project period is effectively shortened.

Description

technical field [0001] The invention belongs to the technical field of building concrete structure engineering, and in particular relates to a construction method of a three-way oblique beam. Background technique [0002] With the continuous pursuit of perfect architectural form and visual effect by architectural designers, the rigid design in the past has been replaced by more and more special-shaped designs. Many large-space and long-span architectural shapes have appeared in architectural design, similar to concrete grid structures. Came into being. This complex unconventional structure puts forward new and higher requirements for the design, construction, reinforcement arrangement, and formwork support of the support system. [0003] In the modern building structure, the high space roof structure, in addition to the grid steel structure, membrane cable structure, reinforced concrete truss and other structures, in the construction of cast-in-place concrete multi-directio...

AI Technical Summary

Problems solved by technology

Usually, the construction method of full hall support frame with load-bearing vertical poles and scattered support formwork is adopted under the beam. The main technical difficulty is that the main force-bearing members of the existing support system products are rectangular orthogonal structures, which are oblique to the three directions. The load transmission system of the beam-slab structure does not match, it is difficult to fully install the load-bearing vertical pole at the main stress-bearing part under the beam, and it is easy to cause safety hazards caused by uneven force; the scattered branch and scattered formwork method has small operating space and low efficiency , the waste of materials is large, and the apparent quality of concrete is difficult to guarantee; it is difficult to install pull bolts at the intersection joints of three-way oblique beams, resulting in insufficient strength of the formwork at this joint, which affects the quality of concrete construction; construction using conventional methods, the amount of facility materials input big, uneconomical

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