A drilling-free construction method for blasting demolition of reinforced concrete frame structures

Abstract

A drilling-free construction method for blasting demolition of a reinforced concrete frame structure, comprising the following steps: (1) formulating a blasting construction plan, including determining the blasting incision area; (2) making a concentrated energy cutter; (3) making a protective (4) Place the energy-concentrating cutter; (5) Place the protective plate; (6) Cover the blasted area of ​​the frame column with protective materials, and at the same time bind the outer layer with blasting protective barbed wire; (7) Follow the steps (1) The blasting construction plan formulated, the detonator is detonated, and the blasting is carried out. The drilling-free construction method proposed by the present invention can avoid the cumbersome procedures required by the traditional drilling and blasting method, and the energy-concentrating cutter assembly used can effectively cut the steel bars in the beams and columns and break the concrete, greatly improving the impact resistance of the columns. The probability of pressure instability reduces the bearing capacity of the beam and makes it easier for the structure to be demolished to collapse and disintegrate.

Description

technical field [0001] The invention belongs to the technical field of blasting demolition, in particular to a drilling-free construction method for blasting demolition of reinforced concrete frame structures. Background technique [0002] When the reinforced concrete frame structure is demolished by traditional punching and blasting method, the basic construction process includes the following key steps: hole layout, drilling, charging, blocking, blasting network connection, setting protection, warning, and detonation. These key steps directly affect The collapse and disintegration effects of blasting demolition, among which hole layout, drilling, charging, blocking, and blasting network connection are the most important. The traditional perforation blasting method must first determine the number and location of blastholes required for unit consumption calculation according to the specific dimensions of structural members such as beams, slabs, and columns, as well as concre...

AI Technical Summary

Problems solved by technology

Each step of these processes requires manual intervention. Under the condition of uneven levels of skilled workers, it is difficult to ensure the accuracy of network connections such as hole layout, drilling, charging, blocking, and blasting, and the current labor cost is increasing day by day. lead to an increase in construction costs

In addition, when the construction period is tight and rapid construction is required, due to the limitation of the work site and work objects, even if the number of workers can be increased, it is difficult to perform simultaneous multi-point drilling operations on beams, slabs, and columns of limited size

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