Reverse construction method concrete floor slab dismantling construction method

Abstract

The invention discloses a reverse building method concrete floor slab dismantling construction method. The method comprises the steps that multiple layers of concrete floor slabs of a building structure are divided into multiple span slab sections correspondingly; a long-arm oil hammer is arranged on the outer side of the building structure; the long-arm oil hammer extends into the building structure, and an outer span plate section of a concrete floor on the bottom layer is dismantled; the same-span slab section of the concrete floor slab on the upper layer is dismantled upwards layer by layer till the concrete floor slab on the top layer; inwards removing the inner span slab section of the concrete floor slab on the bottom layer; the same-span slab section of the concrete floor slab on the upper layer is dismantled upwards layer by layer till the concrete floor slab on the top layer; and sequentially and inwards forming a stepped reverse construction method to circularly dismantle the multi-span slab sections until the multiple layers of concrete floors are completely dismantled. The method solves the problem that the lower floor slab is easy to collapse in the conventional dismantling method of the floor slab of the building structure.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a reverse construction method for dismantling a concrete floor slab. Background Art

[0002] At present, the mechanical demolition construction method of the floor of the building structure adopts the conventional top-down construction sequence for demolition. The biggest safety hazard of the top-down construction sequence is that the debris after demolition cannot be cleaned up in time, causing the debris after crushing to accumulate layer by layer on the lower floor, which can easily cause the lower floor to collapse due to excessive loading. At the same time, the usual demolition construction method requires the demolition machine to go up to the floor to operate, which increases the vibration load of the floor and the deadweight load of the machine, and there are safety hazards for the machine operators. Summary of the invention

[0003] In order to overcome the defects of the prior art, a reverse construction method for dismantling concrete floor slabs is provided to solve the problem that the lower floor slabs are prone to collapse in conventional methods for dismantling the floor slabs of building structures.

[0004] To achieve the above object, a top-down concrete floor demolition construction method is provided, comprising the following steps:

[0005] Divide the multi-story concrete floor slabs of the building structure into multi-span slab sections;

[0006] The long arm oil hammer is arranged outside the building structure;

[0007] Extend the long-arm hydraulic hammer into the building structure and remove the outer span section of the concrete floor slab on the ground floor;

[0008] Remove the same span section of the upper concrete floor slab layer by layer upwards until the concrete floor slab on the top floor;

[0009] Remove the inner span section of the concrete floor slab on the ground floor inwards;

[0010] Remove the same span section of the upper concrete floor slab layer by layer upwards until the concrete floor slab on the top floor;

[0011] The multi-span slab sections are dismantled in a step-by-step reverse manner until all the multi-layer concrete floors are dismantled, and debris from the dismantled upper concrete floors falls to the ground through holes formed by the dismantling of the lower concrete floors.

[0012] Furthermore, the number of the long-arm oil hammers is two, and the two long-arm oil hammers are respectively arranged on opposite sides of the building structure, and simultaneously remove the concrete floor slab from the outer span to the inner span.

[0013] The beneficial effect of the present invention is that the reverse concrete floor demolition construction method of the present invention can directly drop the debris formed by the crushing and demolition to the ground, avoiding the overweight of the lower floor caused by the traditional top-down demolition method, which is more conducive to ensuring safety.

[0014] The reverse construction method for dismantling concrete floor slabs of the present invention adopts a step-by-step reverse construction method for dismantling concrete floor slabs. By first dismantling the lower floor slabs and the outer span floor slabs, a machine can move forward close to the inner span and the upper floor slabs, so that the hydraulic hammer can dismantle all floor slabs without going up the floor slabs, thereby reducing the potential safety hazards caused by the machine going up the floor slabs.

[0015] According to the reverse construction method for dismantling concrete floor slabs of the present invention, since the crushed slag falls directly to the ground each time, the slag can be discharged after the daily oil hammer operation, thereby realizing interlaced operation, dismantling and discharging at the same time, and shortening the construction period.

[0016] The reverse construction method for dismantling concrete floor slabs of the present invention can save the rental cost of large crawler cranes, thereby ensuring safety, reducing costs, and shortening construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0018] Figures 1 to 6 It is a schematic diagram of the steps of the top-down concrete floor demolition construction method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] Reference Figures 1 to 6 As shown, the present invention provides a reverse construction method for dismantling a concrete floor slab, comprising the following steps:

[0022] S1. Divide the multi-story concrete floor slab 11 of the building structure 1 into multi-span slab sections.

[0023] S2, setting the long arm oil hammer 2 on the outside of the building structure 1.

[0024] There are two long-arm oil hammers 2 , which are respectively arranged on two opposite sides of the building structure 1 .

[0025] The long-arm oil hammer is in place and ready for demolition. As a preparatory work before crushing and demolition, two long-arm oil hammers are used for opposite construction. The use of long-arm oil hammers can avoid the machine going up to the working floor and ensure safety.

[0026] S3, extending the long arm hydraulic hammer 2 into the building structure 1 and removing the outer span section of the concrete floor slab 11 of the ground floor.

[0027] Demolish the lower floor slab of the outer span; first break the outer span section of the bottom concrete floor 11, and the debris formed by the crushing and demolition can fall directly to the ground, avoiding the overloading of the lower floor slab caused by the traditional top-down demolition method, reducing the risk of collapse of the lower floor slab, and being more conducive to ensuring safety.

[0028] S4, dismantling the same span slab sections of the upper concrete floor 11 layer by layer upwards until the concrete floor 11 of the top layer.

[0029] After the outer span section of the concrete floor 11 of the bottom layer is removed, the upper floor slab of the same span is removed upwards to ensure that the debris formed by the removal of the upper floor slab can fall directly to the ground.

[0030] S5. Remove the inner span section of the concrete floor 11 of the bottom floor inwardly.

[0031] After all the upper and lower floors of the outer span are demolished, remove the lower floor of the inner span inwards, and always ensure that the long-arm hydraulic hammer is close to the floor to be demolished.

[0032] Two long-arm hydraulic hammers 2 remove the concrete floor slab 11 from the outer span to the inner span

[0033] S6. Remove the same span slab sections of the upper concrete floor 11 layer by layer upward until the concrete floor 11 on the top layer.

[0034] S7, dismantling multiple spans of slabs in a step-by-step reverse manner in sequence until all the multi-layer concrete floors 11 are dismantled, and the debris of the dismantled upper concrete floors 11 falls to the ground through the holes 3 formed after the dismantling of the lower concrete floors 11.

[0035] The reverse concrete floor demolition construction method of the present invention can directly drop the debris formed by the crushing and demolition to the ground, thus avoiding the overweight of the lower floor caused by the traditional top-down demolition method, which is more conducive to ensuring safety.

[0036] The reverse construction method for dismantling concrete floor slabs of the present invention adopts a step-by-step reverse construction method for dismantling concrete floor slabs. By first dismantling the lower floor slabs and the outer span floor slabs, a machine can move forward close to the inner span and the upper floor slabs, so that the hydraulic hammer can dismantle all floor slabs without going up the floor slabs, thereby reducing the potential safety hazards caused by the machine going up the floor slabs.

[0037] According to the reverse construction method for dismantling concrete floor slabs of the present invention, since the crushed slag falls directly to the ground each time, the slag can be discharged after the daily oil hammer operation, thereby realizing interlaced operation, dismantling and discharging at the same time, and shortening the construction period.

[0038] The traditional mechanical floor crushing operation from top to bottom requires a large crawler crane to lift the machine to the working surface. The reverse concrete floor demolition construction method of the present invention can save the rental cost of a large crawler crane, which not only ensures safety, but also reduces costs and shortens the construction period, and has won unanimous praise from owners, supervisors and other parties.

[0039] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A top-down concrete floor demolition construction method, characterized in that: The following steps are involved: Divide the multi-story concrete floor slabs of the building structure into multi-span slab sections; The long arm oil hammer is arranged outside the building structure; Extend the long-arm hydraulic hammer into the building structure and remove the outer span section of the concrete floor slab on the ground floor; Remove the same span section of the upper concrete floor slab layer by layer upwards until the concrete floor slab on the top floor; Remove the inner span section of the concrete floor slab on the ground floor inwards; Remove the same span section of the upper concrete floor slab layer by layer upwards until the concrete floor slab on the top floor; The multi-span slab sections are dismantled in a step-by-step reverse manner until all the multi-layer concrete floors are dismantled, and debris from the dismantled upper concrete floors falls to the ground through holes formed by the dismantling of the lower concrete floors.

2. The top-down concrete floor demolition construction method according to claim 1 is characterized in that: There are two long-arm oil hammers, which are respectively arranged on opposite sides of the building structure and simultaneously remove the concrete floor slab from the outer span to the inner span.

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