Method for inhibiting comprehensive pipe rack concrete shrinkage crack diffusion

Abstract

The invention relates to the field of municipal engineering, in particular to a method for inhibiting comprehensive pipe rack concrete shrinkage crack diffusion. The method is characterized by comprising the steps of determining the position of a crack; determining the position of a reinforcing steel bar in a concrete structure; detecting the depth of the concrete crack; drilling stress relievingholes; and blocking the stress relieving holes. According to the construction method, the holes are utilized for relieving the stress, so that the influence of the stress on the structure is relieved;at two ends of the pipe rack crack, a reinforcing steel bar position detector is adopted for detecting the position of the reinforcing steel bar in the concrete structure, a concrete crack depth detector is used for detecting the crack depth, and then drilling is carried out at the end head of the crack in a way of keeping away from the reinforcing steel bar; and when the crack moves forwards andencounters the holes, the stress causing the further movement of the crack is relieved, and the crack is prevented from further moving forward.

Description

technical field [0001] The invention relates to the field of municipal engineering, in particular to a method for suppressing the diffusion of concrete drying shrinkage cracks in a comprehensive utility gallery. Background technique [0002] In the construction of underground comprehensive pipe gallery, cast-in-place reinforced concrete structures are mostly used at present. Due to the long construction time, the construction process needs to experience hot summer and cold winter, especially in northern my country in recent years. The temperature difference between winter and summer is as high as 40°C Therefore, it has brought many adverse effects to the quality control of the cast-in-place construction of the comprehensive pipe gallery. In the cast-in-place construction of the integrated pipe gallery, due to the limitations of site conditions and structural shapes, it brings inconvenience to the maintenance of the integrated pipe gallery after the cast-in-place construction,...

AI Technical Summary

Problems solved by technology

However, often due to improper maintenance, or exposure to wind and sun, the surface of the concrete loses water quickly and the volume shrinks greatly, while the internal humidity changes very little and the shrinkage is also small, so the surface shrinkage deformation is restricted by the internal concrete, and tensile stress occurs, causing concrete surface cracking