CN-122013979-A - Recyclable outer scaffold and drawknot method thereof

CN122013979ACN 122013979 ACN122013979 ACN 122013979ACN-122013979-A

Abstract

The invention belongs to the technical field of construction of an outer scaffold, and particularly relates to a recyclable outer scaffold and a drawknot method thereof, comprising a structural template and a structural floor slab which is formed above the structural template by post-pouring; the novel embedded wall comprises an outer scaffold body and a pull knot assembly, wherein the outer scaffold body comprises an outer scaffold vertical rod and a longitudinal horizontal rod, the outer scaffold vertical rod and the longitudinal horizontal rod are detachably connected through a connecting fastener I, the pull knot assembly comprises a wall connecting piece vertical rod, a sleeve, a T-shaped embedded part, a nut and a wall connecting piece horizontal steel pipe, the wall connecting piece vertical rod is fixedly connected with the sleeve, the sleeve is provided with a threaded hole, the T-shaped embedded part is sheathed with threads and is in threaded connection with the sleeve, and the wall connecting piece horizontal steel pipe is respectively and obliquely connected with the wall connecting piece vertical rod and the outer scaffold vertical rod through a connecting fastener II.

Inventors

ZHANG JINGUO
REN QINGHE
SUN SHIQI
Yao Xuanchen

Assignees

中建八局第二建设有限公司

Dates

Publication Date: 20260512
Application Date: 20260310

Claims (8)

1. The recyclable outer scaffold comprises a structural template and a structural floor slab formed above the structural template in a post-pouring mode, and is characterized by further comprising an outer scaffold main body and a drawknot assembly, wherein the outer scaffold main body comprises an outer scaffold vertical rod and a longitudinal horizontal rod, the outer scaffold vertical rod and the longitudinal horizontal rod are detachably connected through a connecting fastener I, the drawknot assembly comprises a wall connecting piece vertical rod, a sleeve, a T-shaped embedded part, a nut and a wall connecting piece horizontal steel pipe, the wall connecting piece vertical rod is fixedly connected with the sleeve, the sleeve is provided with a threaded hole, the T-shaped embedded part is sleeved with threads and is in threaded connection with the sleeve, and the wall connecting piece horizontal steel pipe is obliquely connected with the wall connecting piece vertical rod and the outer scaffold vertical rod respectively through a connecting fastener II.
2. The recyclable outer scaffold of claim 1, wherein the T-shaped embedded part is sleeved with a T-shaped plastic protective sleeve, and the T-shaped plastic protective sleeve is fixedly connected with the structural template through iron nails.
3. The recyclable outer scaffold of claim 1, wherein the T-shaped embedded part threading end is wrapped with a plastic film to prevent the spinneret from being polluted during concrete pouring of the structural floor slab.
4. The reusable outer scaffold of claim 3, wherein the T-shaped embedment is threaded with nuts to compress the structural floor.
5. A drawknot method of a recyclable outer scaffold is characterized in that the drawknot method of the recyclable outer scaffold in claim 1 comprises the following steps, Firstly, protecting a T-shaped embedded part, penetrating the T-shaped embedded part into a T-shaped plastic protective sleeve, and wrapping the T-shaped embedded part on a threading end of the T-shaped embedded part by using a plastic film through an adhesive tape to prevent the threading end from being polluted by concrete; step two, fixing a T-shaped embedded part, and fixing a T-shaped plastic protective sleeve sleeved outside the T-shaped embedded part at a preset point position of a structural formwork through an iron nail before concrete pouring of the structural floor slab; Pouring a structural floor slab above the structural formwork, tearing off a plastic film after the concrete pouring of the structural floor slab is finished and the preset strength is reached, and screwing and fixing the plastic film and the threading end of the T-shaped embedded part by using a nut; Step four, screwing the welding body of the vertical rod of the wall connecting piece and the sleeve on the T-shaped embedded piece; Step five, connecting the outer scaffold main body, namely obliquely connecting the wall connecting piece horizontal steel pipe with the wall connecting piece vertical rod and the outer scaffold vertical rod through a connecting fastener II respectively to finish the tie fixation of the outer scaffold main body; And step six, recovering the components, removing the structural formwork after the structural floor slab concrete strength meets the requirement, taking out the T-shaped embedded part, and cleaning for later use.
6. The method for pulling and binding of a recyclable outer scaffold according to claim 5, wherein in the second step, the preset point location is determined according to the steps of the outer scaffold body, the intervals between the upright posts and the construction specification, and the length of the free end of the outer scaffold body after pulling and binding is ensured to be not more than 4m.
7. The method for pulling and connecting a recyclable outer scaffold according to claim 5, wherein the preset strength in the third step is more than 75% of the designed strength of the structural floor slab concrete.
8. The method for pulling and binding the recyclable outer scaffold according to claim 5, wherein in the fifth step, the connecting part of the wall connecting piece horizontal steel pipe, the wall connecting piece vertical rod and the outer scaffold vertical rod is required to be screwed up without looseness, so that the stability of the pulling and binding structure is ensured.

Description

Recyclable outer scaffold and drawknot method thereof Technical Field The invention relates to the technical field of construction of outer scaffold, in particular to a recyclable outer scaffold and a pulling and binding method thereof. Background In the construction of building engineering, the overhanging scaffold is a common overhead operation supporting device, and the setting of the pull-out nodes directly relates to the construction safety and the construction specification compliance of the scaffold. At present, the setting of the stretching points of the overhanging scaffold in most building engineering often does not meet the requirements of construction specifications, and great potential safety hazards exist. The standard floor height of the existing residential building is usually about 3m, the step distance of the outer scaffold is 1.8m, and according to the requirements of general Specification of construction scaffolds of GB 55023-2022, the once erection height of the scaffold should not exceed 2 steps distances of the uppermost wall connecting piece and should not be greater than 4m, so that the erection construction safety is ensured. However, by adopting the traditional tie point method, the overhanging length above the tie point is very easy to exceed 4m before the construction of the previous layer structure is completed, and the conventional tie point method does not meet the standard requirements, so that great safety risks exist. Meanwhile, the traditional external scaffold pulling nodes are mostly and directly embedded in the main structure beam or the shear wall, and cannot be removed and recovered after construction is completed, so that a large amount of materials are wasted, and the construction cost is increased. Disclosure of Invention The invention aims at the problems in the prior art, and specifically designs a recyclable outer scaffold and a drawknot method thereof so as to solve the defects in the prior art. The invention provides a recyclable outer scaffold, which comprises a structural template, a structural floor slab, an outer scaffold main body and a tie assembly, wherein the structural floor slab is molded above the structural template in a post-pouring mode, the outer scaffold main body comprises an outer scaffold vertical rod and a longitudinal and transverse horizontal rod, the outer scaffold vertical rod and the longitudinal and transverse horizontal rod are detachably connected through a connecting fastener, the tie assembly comprises a wall connecting vertical rod, a sleeve, a T-shaped embedded part, a nut and a wall connecting horizontal steel pipe, the wall connecting vertical rod is fixedly connected with the sleeve, the sleeve is provided with a threaded hole, the T-shaped embedded part is sleeved with threads and is in threaded connection with the sleeve, and the wall connecting horizontal steel pipe is obliquely connected with the wall connecting vertical rod and the outer scaffold vertical rod through a connecting fastener II respectively. Further, the T-shaped embedded part is sleeved with a T-shaped plastic protective sleeve, and the T-shaped plastic protective sleeve is fixedly connected with the structural template through iron nails. Further, the wire sleeving end of the T-shaped embedded part is wound with a plastic film, so that the wire sleeving end is prevented from being polluted during concrete pouring of the structural floor slab. Further, the T-shaped embedded part is in threaded connection with a nut so as to compress the structural floor slab. The invention also comprises a drawknot method of the recyclable outer scaffold, comprising the following steps: firstly, protecting a T-shaped embedded part, penetrating the T-shaped embedded part into a T-shaped plastic protective sleeve, and wrapping the T-shaped embedded part on a threading end of the T-shaped embedded part by using a plastic film through an adhesive tape to prevent the threading end from being polluted by concrete; step two, fixing a T-shaped embedded part, and fixing a T-shaped plastic protective sleeve sleeved outside the T-shaped embedded part at a preset point position of a structural formwork through an iron nail before concrete pouring of the structural floor slab; Pouring a structural floor slab above the structural formwork, tearing off a plastic film after the concrete pouring of the structural floor slab is finished and the preset strength is reached, and screwing and fixing the plastic film and the threading end of the T-shaped embedded part by using a nut; Step four, screwing the welding body of the vertical rod of the wall connecting piece and the sleeve on the T-shaped embedded piece; step five, connecting an outer scaffold main body, and obliquely connecting the wall connecting piece horizontal steel pipe with the wall connecting piece vertical rod and the outer scaffold vertical rod through a connecting fastener II respectively to finish the tie fixation of the o