Tension-anchor type structural steel cantilever supporting operation scaffold combined system and construction method

Abstract

The invention discloses a tension-anchor type structural steel cantilever supporting operation scaffold combined system and a construction method, and relates to the building construction technology.The tension-anchor type structural steel cantilever supporting operation scaffold combined system specifically comprises matched devices such as I-shaped steel primary and secondary beams, detachablelifting lug devices, primary and secondary beam fixing and vertical rod base devices, steel pipe vertical rod free-combination type fixing base devices, embedded bolt fixing devices, flower basket pull rod devices and wall-connecting short rod devices. A traditional structural steel cantilever scaffold is improved through the devices, a supporting operation scaffold is erected on the improved cantilever I-shaped steel primary and secondary beams, and the combined system with the two functions of a structural cantilever component formwork supporting scaffold and an outer wall operation scaffoldis achieved. The tension-anchor type structural steel cantilever supporting operation scaffold combined system is simple in structure and easy and convenient to operate, the cantilever component formwork supporting scaffold and the outer wall operation scaffold are organically combined together, and the construction progress can be effectively accelerated while the investment of resources such aslabor and materials is greatly reduced on the premise that scaffold erecting and using safety and reliability are guaranteed.

Description

technical field [0001] The invention belongs to the field of construction engineering, and in particular relates to a combined system and construction method of an anchor-type steel cantilevered support scaffolding operation. Background technique [0002] In the field of construction engineering, especially in the construction of high-rise buildings, steel cantilevered scaffolds are often used as work scaffolds or structural overhanging components (bay windows, balconies, air-conditioning panels, roof overhangs, etc.) The erection requirements of scaffolding and formwork support scaffolding, in the "Technical Specifications for Safety of Fastener Type Steel Pipe Scaffolding in Building Construction" (JGJ130--2011), Article 9.0.5 stipulates that the construction load on the working layer should meet the design requirements, Do not overload. Formwork support scaffolding, cable wind ropes, conveying pipes for pumping concrete and mortar, etc. shall not be fixed on the frame bo...

AI Technical Summary

Problems solved by technology

Formwork support scaffolding, cable wind ropes, conveying pipes for pumping concrete and mortar, etc. shall not be fixed on the frame body; according to the understanding of the above specification provisions, the structural component formwork support scaffolding and operating scaffolding must be designed and erected separately; in order to ensure that the frame body Safety, the formwork support scaffold and the operation scaffold cannot be connected; in actual construction, in order to meet the specification requirements and ensure construction safety, the formwork support scaffold and the operation scaffold must be designed and erected separately. The investment of materials and other resources has also greatly affected the construction progress; for the anchorage length of 1.25 times of the anchorage length of the I-steel main girder of the traditional section steel cantilevered scaffold is laid and anchored on the floor, the bearing capacity of the cantilevered end of the I-steel beam is relatively small , the erection operation method is unreasonable, and the operation of the workers is time-consuming and laborious. It often occurs that the structural cantilevered member formwork support scaffold is connected with the external scaffold, or the working scaffold is directly used as a formwork support scaffold; according to the previous case analysis of scaffold collapse, Apply rote techniques to connect the structural cantilever member formwork support scaffold with the external scaffold, or use the working scaffold directly as the formwork support scaffold. The scaffold load combination and value are not fully considered, which leads to the overload of the scaffold, which leads to the collapse of the outdoor scaffold. The main factor of frequent occurrence, and once the outdoor scaffold collapse accident occurs, it will seriously threaten the life safety of the construction site personnel, and cause huge economic losses and bad social impact; Construction methods need improvement

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