A structure and method for erecting a ground-type external scaffolding passing through an overhanging eave

Abstract

The present invention relates to a floor-type external scaffolding erection structure that passes through an overhanging eave, wherein a plurality of groups of pre-buried sleeves are evenly spaced along the length direction of the overhanging eave, each group of pre-buried sleeves is two that are arranged oppositely in the width direction of the overhanging eaves, the vertical poles are inserted into the sleeves, a wooden square is arranged on one side of each sleeve on the upper end surface of the overhanging eaves, a cross bar is arranged on the two wooden squares in the width direction, and the cross bar is connected to the vertical poles of the external scaffolding through a connecting piece. The present invention also relates to a floor-type external scaffolding erection method that passes through an overhanging eaves, by means of the external scaffolding erection method that passes through an overhanging eaves, the construction progress is accelerated, the waste of human resources is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and relates to a scaffolding erection structure method, in particular to a ground-type external scaffolding erection structure and method passing through an overhanging eave. Background Art

[0002] External scaffolding is widely used. Currently, various types of ground-type external scaffolding, hanging scaffolding, cantilever scaffolding, hanging scaffolding, etc. are commonly used, and are generally set up outside the building. External scaffolding is mostly used for exterior wall construction, facade decoration, and reinforced concrete engineering. The role of external scaffolding construction is, first, to meet safety needs, specifically to play the role of edge protection; second, to meet construction needs, specifically to refer to exterior wall construction, concrete pouring of exterior walls and beams, including formwork, exterior wall insulation, coatings, etc. External scaffolding, that is, external scaffolding.

[0003] For building construction projects with cantilevered eaves, the existing technology of ground-type external scaffolding is to place the bottom of the scaffolding on the cantilevered eaves of the next layer that has been poured, and the external scaffolding can be continued to be erected on it only when the concrete structure strength of the cantilevered eaves of this layer has reached the requirements. Since the curing time of concrete is relatively long, generally about 28 days, it seriously affects the construction progress.

[0004] The second prior art is to erect the scaffolding to the outside of the cantilevered eaves, which requires wall connecting parts to fix the external scaffolding. However, for the outer eaves with a width of ≥3m, the wall connecting parts are relatively long, which is very detrimental to the stability and safety of the scaffolding and exceeds the requirements of the scaffolding specifications.

[0005] At present, there is no method in the field of external scaffolding construction that can solve the safety problem of external scaffolding erection at cantilevered places and avoid the impact on the construction progress of the external scaffolding. In view of this, the present invention designs a method for erecting a ground-type external scaffolding through the cantilevered eaves, which can ensure the normal function of the external scaffolding while solving the impact of the cantilevered eaves on the erection of the external scaffolding, thereby speeding up the construction progress and reducing the construction cost. Summary of the invention

[0006] The purpose of the present invention is to provide a ground-type external scaffolding erection structure and method that passes through the overhanging eaves, which can effectively solve the influence of the traditional overhanging eaves on the erection of the external scaffolding, thereby achieving the purpose of accelerating the construction progress and saving costs.

[0007] The present invention solves the technical problem by the following technical solutions:

[0008] A ground-type external scaffolding erection structure that passes through an overhanging eave comprises an overhanging eave, vertical poles and a horizontal pole of an external scaffolding, and is characterized in that it also comprises sleeves and wooden squares, a plurality of groups of pre-embedded sleeves are evenly distributed along the length direction of the overhanging eaves at intervals, each group of pre-embedded sleeves comprises two sleeves that are arranged opposite to each other in the width direction of the overhanging eaves, the vertical poles are inserted into the sleeves, wooden squares are arranged on one side of each sleeve on the upper end surface of the overhanging eaves, a horizontal pole is placed on the two wooden squares in the width direction, and the horizontal pole is connected to the vertical poles of the external scaffolding through a connecting piece.

[0009] Moreover, the sleeve is a PVC sleeve.

[0010] Moreover, the distance between the sleeve close to the second-floor outer wall and the second-floor outer wall is no more than 300 mm.

[0011] A method for erecting a ground-type external scaffolding passing through an overhanging eave, characterized in that it comprises the following steps:

[0012] Step 1, erecting the inner scaffolding of the cantilevered eaves and the outer scaffolding of one layer in a conventional manner, and pouring the cantilevered eaves floor slab; embedding a vertically penetrating sleeve thereon before pouring, and determining the embedding position of the sleeve according to the position of the pole foot of the upper outer scaffolding to be erected in the future, and ensuring that the distance between the sleeve and the second-floor outer wall is not greater than 300mm;

[0013] Step 2: After pouring the cantilevered eaves slab, perform daily maintenance for 3 days, and use a rebound tester to detect whether the cantilevered eaves concrete strength reaches 50% of the design strength. If it reaches 50%, the inner scaffolding crossbars under the cantilevered eaves are removed to provide a passage and working surface for the erection of the outer scaffolding passing through the cantilevered eaves;

[0014] Step 3: Pass the external scaffolding poles through the embedded sleeves of the eaves, and erect one layer of ground-based external scaffolding according to the specifications. Continue to erect the external scaffolding above the second floor through the poles passing through the sleeves, and set up wall ties to ensure the stability of the external scaffolding.

[0015] Moreover, when other construction work is being carried out on the first floor and the external scaffolding needs to be removed, the eaves floor slab should be checked to see if it has reached 100% of the design strength. Only when the requirements are met can the internal and external scaffolding under the eaves be removed.

[0016] The advantages and beneficial effects of the present invention are:

[0017] 1. The structure and method for erecting the ground-type external scaffolding through the overhanging eaves can speed up the construction progress, reduce the waste of human resources, and improve the construction efficiency through the erection method of the external scaffolding through the overhanging eaves;

[0018] 2. This method has a simple principle, does not require other complex auxiliary equipment, has low cost, saves costs, and has high economic benefits;

[0019] 3. This method is highly practical and can be widely promoted and popularized in the field of housing construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 A structural schematic diagram illustrating the positions of an inner scaffold and a layer of outer scaffold according to the present invention.

[0022] Reference numerals

[0023] 1-vertical pole, 2-horizontal pole, 3-wooden beam, 4-eaves, 5-sleeve, 6-wall connection. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the protection scope of the present invention cannot be limited thereto.

[0025] In the prior art, the external scaffolding is a frame structure on the same vertical plane. Since it is arranged on the outside of the overhanging eaves and is far away from the second-floor wall, there is a potential safety hazard of instability after the longer wall connecting parts are connected. Therefore, the present invention divides the existing external scaffolding into two parts, one part is a conventionally arranged one-layer external scaffolding, and the other part is an upper layer of external scaffolding arranged at the overhanging eaves, and the upper layer of external scaffolding is a ground-mounted structure.

[0026] A ground-type external scaffolding erection structure passing through an overhanging eave comprises an overhanging eave 4, an upright pole 1 and a crossbar 2 of an external scaffolding, and its innovation lies in: it also comprises a sleeve 5 and a wooden square 3, the sleeve is a PVC sleeve, and multiple groups of pre-buried sleeves are evenly spaced along the length direction of the overhanging eave, and each group of pre-buried sleeves is two sets of sleeves arranged oppositely in the width direction of the overhanging eaves, and the upright pole is installed in the sleeve, and the upper load of the scaffolding is transmitted to the ground through the upright pole passing through the overhanging eaves, so as to achieve the purpose of ground support. When the poured overhanging eaves concrete reaches 100% of the design strength, wooden squares are arranged on one side of each sleeve on the upper end surface of the overhanging eaves, and a crossbar is arranged on the two wooden squares in the width direction, and the crossbar is connected to the upright pole of the external scaffolding through a connector. The connector is a connector used for building scaffolds in the prior art. The distance between the sleeve close to the second-floor outer wall and the second-floor outer wall is not more than 300 mm. This distance allows the use of shorter wall ties, which can better stabilize the external frame.

[0027] When the external scaffolding at the lower end of the cantilever eaves needs to be dismantled due to construction needs, the load of the external scaffolding at the upper end of the cantilever eaves is transmitted to the cantilever eaves through square timbers, so that the upper external scaffolding can continue to be used.

[0028] A method for erecting a ground-type external scaffolding passing through an overhanging eaves, the innovation of which is that it comprises the following steps:

[0029] Step 1, normally set up the inner scaffolding of the overhanging eaves and one layer of outer scaffolding in a conventional manner, the inner scaffolding supports the overhanging eaves bottom template, and the outer scaffolding provides a working surface and edge protection for steel bar binding and concrete pouring. When supporting a layer of overhanging eaves floor slab, a vertically penetrated Φ60 sleeve is pre-embedded thereon, and the sleeve is made of PVC material. The pre-embedded position of the sleeve is determined according to the position of the pole foot of the outer scaffolding pole above the second floor to ensure that the distance between the sleeve and the second-floor outer wall is not more than 300mm;

[0030] Step 2, after pouring the overhanging eaves floor slab, daily curing is performed for 3 days, and a rebound instrument is used to detect whether the overhanging eaves concrete strength reaches 50% of the design strength, about 3 days or so. If it reaches 50%, the inner scaffolding crossbar under the overhanging eaves is removed, and a passage and a working surface are provided for the erection of the outer scaffolding (one layer of upper outer scaffolding) passing through the overhanging eaves;

[0031] Step 3, pass the external scaffolding poles through the pre-buried sleeves of the overhanging eaves, and set up a layer of ground-type external scaffolding normally according to the specifications. Continue to set up the external scaffolding above the second floor through the poles passing through the sleeves, and set up wall connecting parts 6 to ensure the stability of the external scaffolding.

[0032] When other construction work is carried out on the first floor and the external scaffolding needs to be removed, the eaves floor slab should be checked to see if it reaches 100% of the design strength. Only when the requirements are met can the internal and external scaffolding under the eaves be removed.

[0033] Because the external scaffolding above the second floor is erected on the basis of the first floor external scaffolding, before dismantling the first floor scaffolding, it is necessary to place upper wood or steel pipes under the cross bar of the external scaffolding at the second floor eaves to ensure that the upper external scaffolding does not fall.

[0034] Compared with the existing technology, this method of erecting external scaffolding through the eaves does not need to wait for the eaves floor to reach 100% of the design strength before erecting the upper scaffolding, and also avoids the hidden dangers of poor safety and stability of the external scaffolding caused by the overlong wall connection. It greatly speeds up the construction progress of the main project, reduces the waste of human resources, and improves the material turnover efficiency and construction efficiency. This external scaffolding through the eaves meets the requirements of the external scaffolding erection specifications in terms of safety and stability, and has been used well during the construction of this project.

[0035] Although the embodiments and drawings of the present invention are disclosed for illustrative purposes, it will be appreciated by those skilled in the art that various substitutions, changes and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A method for erecting a ground-type external scaffolding through an overhanging eave, characterized in that: The method is implemented based on a floor-type external scaffolding erection structure passing through the eaves. The floor-type external scaffolding erection structure passing through the eaves includes an eaves, an upright pole, a cross bar, a sleeve and wooden squares of an external scaffolding. A plurality of groups of pre-embedded sleeves are evenly distributed along the length direction of the eaves at intervals. Each group of pre-embedded sleeves is two sleeves that are arranged oppositely in the width direction of the eaves. The upright poles are installed in the sleeves. Wooden squares are arranged on one side of each sleeve on the upper end surface of the eaves. A cross bar is placed on the two wooden squares in the width direction. The cross bar is connected to the upright poles of the external scaffolding through a connecting piece. The method for erecting a ground-type external scaffolding passing through an overhanging eave comprises the following steps: Step 1, erecting the inner scaffolding of the cantilevered eaves and the outer scaffolding of one layer in a conventional manner, and pouring the cantilevered eaves floor slab; before pouring, pre-embed a vertical through-tube on the cantilevered eaves, and determine the pre-embedded position of the tube according to the position of the pole foot of the upper outer scaffolding to be erected in the future, and ensure that the distance between the tube and the second-floor outer wall is not more than 300mm; Step 2: After pouring the cantilevered eaves slab, perform daily maintenance for 3 days, and use a rebound tester to detect whether the cantilevered eaves concrete strength reaches 50% of the design strength. If it reaches 50%, the crossbars of the inner scaffolding under the cantilevered eaves will be removed to provide a passage and working surface for the erection of the outer scaffolding on the upper part of the first floor; Step 3: Pass the external scaffolding poles through the embedded sleeves of the eaves, and erect one layer of ground-based external scaffolding according to the specifications. Continue to erect the external scaffolding above the second floor through the poles passing through the sleeves, and set up wall ties to ensure the stability of the external scaffolding.

2. The method for erecting a ground-type external scaffolding through an overhanging eave according to claim 1, characterized in that: The sleeve is a PVC sleeve.

3. The method for erecting a ground-type external scaffolding through an overhanging eave according to claim 1, characterized in that: The distance between the sleeve close to the second-floor exterior wall and the second-floor exterior wall is no more than 300 mm.

4. The method for erecting a ground-type external scaffolding through an overhanging eave according to claim 1, characterized in that: When other construction work is being carried out on the first floor and the external scaffolding needs to be removed, the cantilevered floor slab should be checked to see if it has reached 100% of the design strength. Only when the requirements are met can the internal and external scaffolding under the cantilevered eaves be removed.

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