Construction method for resisting uplift in internal mold of concrete box

Abstract

The invention provides a construction method for resisting the uplift in the internal mold of a concrete box. The method comprises the following steps: welding the longitudinal reinforcing steel bars on the box wall of the concrete box to be cast with the main reinforcing steel bars of a pile foundation at the bottom of a foundation pit; embedding an internal mold in the foundation pit and arranging a batten or a support tube at the top of the internal mold; tensioning the longitudinal reinforcing steel bars of the box wall, which are welded with the main reinforcing steel bars of the pile foundation, and then, fixedly connecting the upper ends of the longitudinal reinforcing steel bars of the box wall with the batten or the support tube; and casting the concrete and resisting the buoyant force of the concrete applying on the bottom plate of the box mold by the reaction force generated by the welded longitudinal reinforcing steel bars of the box wall and the batten or the support tube, so that the internal mold can be pressed by the support tube to prevent the internal mold from going up. The invention is suitable for resisting the buoyant force in the internal mold of a small-size concrete box and has the characteristics of reliable buoyancy resistance and easily guaranteed construction quality; and compared with the conventional method, the invention does not need secondary transport with high labor consumption, economizes on human resources and improves the production efficiency.

Description

technical field [0001] The invention relates to a building construction method, and further refers to a construction method suitable for anti-floating of the inner mold of a small concrete box. Background technique [0002] In order to achieve the overall rigid waterproofing of concrete, some small concrete box structures (such as elevator shaft foundation pits, basement water collection wells, etc.) require one-time integral cast-in-place. During the pouring process, if effective measures are not taken, the inner mold will often float up, seriously affecting the construction quality; most of the existing technologies use the conventional method of accumulating heavy objects to press the inner mold to prevent the inner mold from floating, but the heavy objects occupy the With a large number of working surfaces, the geometric dimensions of components cannot be guaranteed, which affects the implementation of other processes. Contents of the invention [0003] The technical ...

AI Technical Summary

Problems solved by technology

During the pouring process, if effective measures are not taken, the inner mold will often float up, seriously affecting the construction quality; most of the existing technologies use the conventional method of accumulating heavy objects to press the inner mold to prevent the inner mold from floating, but the heavy objects occupy the A large number of working surfaces, the geometric dimensions of components cannot be guaranteed, which affects the implementation of other processes

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