Method for using box formwork as tire formwork for support beam systems with uneven bottom

Abstract

The invention relates to a method for using a box formwork as a membrane for a support beam system with an uneven bottom surface. The specific operation steps are as follows: (1) excavate the earthwork to the bottom of the cushion layer of the support beam with the largest cross-section, and pour the whole continuous cushion layer; (2) prefabricate Beam bottom box formwork; (3) Place beam bottom formwork and box formwork; (4) Clean up the garbage (or sawdust) on the box formwork, bind steel bars, and seal both sides of the beam with side forms; (5) Prefabricated square wood support frame , place the support frame on the bottom of the slab; (6) Lay formwork on the support frame to form a slab bottom box form with the beam side formwork; (7) Bind the steel bars inside the slab and pour concrete. The beneficial effects of the present invention are: effectively avoiding the disadvantages of using brick tire formwork such as soil repairing and grooving and artificial masonry during the construction of support beams with different bottom elevations, solving the impact of concrete cushion construction on the progress, and making the box formwork more efficient. The utility model is simple and convenient, the cost is lower than that of brick blocks, the cost is saved, and the utility model has the value of promotion and use.

Description

technical field [0001] The invention relates to the field of construction of concrete inner support beams in foundation pits, in particular to a method for using a box formwork as a membrane for support beam systems with uneven bottom surfaces. Background technique [0002] With the deepening of urban development and construction, the excavation of foundation pits is getting deeper and deeper, and the application of supporting structures is becoming more and more extensive. During the construction of support beams, the cushion layer poured on the original soil is generally used as a formwork, and the support beams with different bottom elevations are repaired again, and brick tire molds are built at the height difference. However, due to the characteristics of the process, the brick tire formwork must be built after the concrete cushion reaches the required strength, especially in muddy soil, where it is difficult to repair the soil, and even requires a second cushion, and t...

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the process, the brick tire formwork must be built after the concrete cushion reaches the required strength, especially in muddy soil, where it is difficult to repair the soil, and even requires a second cushion, and the process of bricklaying and earthwork backfilling More time-consuming and labor-intensive

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