Why should the steel structure be assembled on the ground?

There should be a reliable foothold for steel structure hoisting operations, and protective railings, protective nets or other safety facilities should be provided as appropriate.

Rigging, scaffolding, hanging baskets, cages, platforms and other equipment used for protective railings must be technically appraised or verified before use, and the suspension operators must fasten their safety belts.

When the steel structure is hoisted, the components should be assembled on the ground as much as possible, and safety measures for high-altitude operations such as temporary fixation, electric welding, and high-strength bolt connection should be provided. The installation and installation of the steel structure should be carried out at the same time, and the removal of these safety devices should be considered. Before the high-altitude hoisting of large components, the safety facilities required for the suspension operation should also be set up.

There are many factors for cracks, which are related to design, manufacturing and materials. However, most of the cracks are closely related to long-term overloading and are the result of accumulation. With the revolution in construction technology, the speed of construction has increased rapidly. Building a one-story building in three days is no longer a myth. Work done over the past few years was completed in a matter of months. At such a fast speed, we should pay more attention to the standardized operation and maintenance of equipment. On the contrary, most of the original specialized management organizations, equipment departments, and mechanical departments have been optimized and simplified, and their functions have been greatly weakened. Some companies even have no equipment management department at all.

The steel structure is just a small crack at first, and the accident will only happen when the crack expands to a certain extent. For example, we often check, discover and deal with it in time, so that such accidents can be completely avoided. The main parts that are vulnerable to damage are: the connection between the foundation joint and the bottom beam, the reinforced joint on the diagonal brace or the main limb of the standard section or the welded joint of the connecting sleeve, the section of the tower body, the upper and lower brackets, the rotating tower body, the top Main limb or lug plate and tower bottom etc.