Controllable device capable of releasing stress generated by temperature and contraction of overlong concrete structure and construction method

Abstract

The invention discloses a controllable device capable of releasing stress generated by temperature and contraction of an overlong concrete structure. The controllable device comprises concrete main body floor plates (1) on the two sides and a concrete connecting plate (2); steel plate anti-shearing connecting pieces (3) are additionally arranged on the end portions of the upper ends and the lower ends of the concrete main body floor plates (1); and meanwhile, a plurality of movable temperature sensors (20) are arranged on the outermost sides of the concrete connecting plate (2) and the steel plate anti-shearing connecting pieces (3) so as to monitor the temperature transmitted from translation layers (7) to the concrete connecting plate (2) and the steel plate anti-shearing connecting pieces (3) in real time. Under the effect that horizontal beam plate components are not influenced to transmit bending moment and shearing force, the controllable device can not only release partial axial deformation of the horizontal components to achieve the purpose of reducing restraint stress generated by temperature and contraction deformation of the overlong concrete structure, but also monitor the stress strength and the temperature range in real time, so that control over the whole process is achieved; and the controllable device is suitable for overlong concrete structures and jointed structures.

Description

technical field [0001] The invention relates to a controllable device and construction method for releasing the temperature and shrinkage stress of an ultra-long concrete structure, and belongs to the technical field of building structural components and building construction. Background technique [0002] With the large-scale construction of super-long concrete structures such as large-scale commercial complexes and terminal buildings in my country, the engineering applications of continuous structures without joints are increasing; Larger tensile stress cracks the structure. [0003] At present, the general way to solve the super-long without joints is to set up post-casting belts to release the shrinkage deformation of the concrete in the early stage, set up expansion reinforcement belts to offset the temperature shrinkage deformation, or use prestressing technology to balance the tensile stress caused by temperature deformation. [0004] Among them, the post-casting belt...

AI Technical Summary

Problems solved by technology

[0004] Among them, the post-casting belt can only release the shrinkage deformation of the concrete, but cannot solve the temperature deformation, and cannot be completed in one pour; the expansion reinforcement belt has limited ability to resist shrinkage deformation, so this method is not suitable for super-long structures with excessive shrinkage deformation; The use of prestressing technology greatly increases the difficulty of design and construction, and also greatly increases the cost and cost of building structures;

[0005] Due to the excessive shrinkage and deformation of the super-long structure, and the failure factors such as temperature, shear force, and bending moment cannot be predicted and controlled, the above methods often produce uncontrollable deformation during the solution process.

Images