Construction method of one-way collapse blasting demolition of anti-recoil of reinforced concrete frame structure
A reinforced concrete and frame structure technology, applied in building construction, construction, building maintenance, etc., can solve problems such as difficult to fully guarantee, long construction time, and inability to accurately calculate the mechanical properties of building materials, and achieve a good guiding effect and construction process. Simple and clear, low construction cost effect
Active Publication Date: 2019-10-22
LUOYANG INST OF SCI & TECH
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Problems solved by technology
Although optimization of the blasting design parameters can have a certain effect on preventing the backseat phenomenon of the reinforced concrete frame structure, but because the aforementioned blasting parameter design and calculation formulas are often empirical formulas, and because the frame structure to be demolished has been built for a long time, its construction The mechanical properties of materials cannot be accurately calculated, which makes it difficult to completely guarantee that there will be no recoil during blasting demolition
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[0025] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. In this embodiment, the collapse direction of the reinforced concrete frame structure is defined as front, and the deviation direction of the collapse direction is defined as rear.
[0026] First, the basic principles of unidirectional collapse blasting demolition of reinforced concrete frame structures are briefly described as follows:
[0027] Please refer to Figure 1(a). When carrying out the unidirectional collapsed blasting demolition of a reinforced concrete frame structure, the blasting cut area Z needs to be determined according to the specific object to be blasted. The relevant parameters of the blasting cut area can be designed with reference to conventional technical parameters, which are conventional means. No more details; please refer to Figure 1(b), blast the frame column in the ALND cut area, and loosen blast the beam-colu...
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A construction method for blasting and demolishing an anti-recoil of a reinforced concrete frame structure in one direction, comprising the following steps: (1) formulating a blasting construction plan, including determining the area of the blasting cut; A supporting inclined beam is arranged between each frame column of a row and the connecting beam; (3) at the midpoint between the last row of adjacent frame columns that deviate from the collapse direction in the blasting cut area A mid-span support column is fixed, and the top of the mid-span support column is not in contact with the connecting longitudinal beam above; (4) A reinforcing leg is added to each of the four sides of the mid-span support column; (5) According to the steps ( 1) Conduct blasting according to the blasting construction plan formulated. Through production practice, the supporting inclined beams and mid-span supporting columns proposed by the present invention can effectively prevent the backseat problem when the reinforced concrete frame structure is unidirectionally collapsed and demolished by blasting.
Description
Technical field [0001] The invention belongs to the technical field of blasting and demolition, and in particular relates to a construction method for unidirectional collapse of a reinforced concrete frame structure by blasting and demolition of a back seat. Background technique [0002] When the reinforced concrete frame structure is demolished by one-way collapse by blasting, the back seat phenomenon often occurs during the frame dumping process, that is, the entire upper structure moves back a certain distance in the opposite direction of the dumping, which may threaten the buildings and structures behind the frame structure. Safety, resulting in serious safety liability accidents. In order to avoid the aforementioned rear seat phenomenon, the method of optimizing blasting design parameters is often used for prevention. The main control parameters include the blasting demolition range of frame beams and columns, and the amount of blasting charge. Although optimizing the blast...
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IPC IPC(8): E04G23/08
Inventor 谢冰马云玲高富强丁梧秀吴昌勇曹哲赵靓雯
Owner LUOYANG INST OF SCI & TECH