Related knowledge of scaffolding for high-altitude operations

Scaffolding is a working platform erected to ensure the smooth progress of each construction process. According to the erection position, it can be divided into outer scaffolding and inner scaffolding; according to different materials, it can be divided into wooden scaffolding, bamboo scaffolding, and steel pipe scaffolding; according to the structure form, it can be divided into vertical scaffolding, bridge scaffolding, portal scaffolding, and suspended scaffolding. Hanging scaffolding, picking scaffolding, climbing scaffolding.

Different types of engineering construction replace scaffolding for different purposes. Most axial support frames use bowl buckle scaffolding, and some use portal scaffolding. The main structure construction floor scaffolds mostly use fastener scaffolds. The vertical distance of the scaffold poles is generally 1.2~1.8m; the horizontal distance is generally 0.9~1.5m.
The working conditions of scaffolds for high-altitude operation and general structure classification have the following characteristics:

1. The interference of variability.

2. The coaxial connection of the fastener is semi-rigid, and the slender size is usually related to the quality of the fastener and the installation quality, and the performance of the inverter has deviations and variations.

3. There are initial defects in the scaffolding structure and components, such as initial bending, corrosion, erection size error, load eccentricity, etc., all interfere.

4. The research on the above problems lacks systematic accumulation and statistical data, and does not have the conditions for independent probability analysis, so the structural resistance is multiplied by an adjustment coefficient less than 1. The value is determined by calibration with the previously adopted safety factor. Therefore, the design method adopted in this specification is half-probability and half-empirical.

Post time: Jan-18-2021