Construction method for reversely removing floor slab by using chain saw

A construction method and floor slab technology, applied in building maintenance, construction, building construction, etc., can solve the problems of high construction intensity, low efficiency, limited upper operating space, etc., and achieve the effect of reducing construction intensity and safety risks.

CN105888294AActive Publication Date: 2016-08-24SHANGHAI NO 7 CONSTR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-08-24

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Abstract

The invention discloses a construction method for reversely removing a floor slab by using a chain saw. The construction method comprises the following steps: locating and paying off, respectively arranging longitudinal cutting lines which are parallel to each other at two sides of a to-be-removed floor slab along the length direction, arranging a plurality of horizontal cutting lines which are vertical to the longitudinal cutting lines between the two longitudinal cutting lines at intervals, and dividing the to-be-removed floor slab into a plurality of blocks; forming chain saw lacing holes in connected positions of the horizontal cutting lines and the longitudinal cutting lines on the to-be-removed floor slab, forming a hoisting hole in each block; putting the chain saw under the to-be-removed floor slab, and horizontally cutting the to-be-removed floor slab along each horizontal cutting line; after longitudinally cutting the to-be-removed floor slab from outside to inside one by one along the two longitudinal cutting lines, respectively putting down the blocks until completing the cutting and the putting down of all blocks. According to the construction method disclosed by the invention, the floor slab which has an limited upper space and is difficult to forwards remove is subjected to reverse removing construction, the problem that removing construction cannot be successfully carried out is solved, high-strength construction of large-area excavation during the reverse removing construction is removed, and the construction efficiency of removing the floor slab under a special condition is increased.
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Description

technical field

[0001] The invention relates to the demolition of reinforced concrete structures, in particular to a construction method for reverse demolition of floor slabs with a chain saw. Background technique

[0002] With the rapid development of the modern construction industry, due to factors such as changes in use functions or the need for expansion, the number of renovation and expansion projects of old buildings is also increasing, and there are many projects that are difficult to successfully complete with existing conventional construction techniques.

[0003] In traditional reconstruction and expansion projects, the demolition of the floor slab usually uses mechanical equipment such as jackhammers and disc saws to carry out forward demolition construction on the slab surface. However, when the construction space on the upper part of the slab is restricted by the surrounding environment, such as the upper operating space caused by the addition of a new structura...

Examples

Embodiment Construction

[0027] The present invention is described in detail below in conjunction with accompanying drawing:

[0028] Such as Figure 1-6 As shown, the present invention provides a chain saw construction method for reverse demolition of floor slabs, comprising the following steps:

[0029] S1: positioning and setting out, parallel longitudinal cutting lines 22 are respectively set on both sides of the length direction of the floor 1 to be removed, and several transverse cutting lines 21 perpendicular to the longitudinal cutting lines 22 are arranged at intervals between the two longitudinal cutting lines 22, The floor slab 1 to be removed is divided into several sub-blocks. The block size of the floor slab 1 to be removed is jointly determined according to the carrying capacity of the spreader 8, the support frame 7 and the surrounding fixed structure 10. In this embodiment, the floor slab 1 to be demolished is rectangular, the short side of the rectangle is parallel to the horizonta...