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The main loads of space frame steel structure are divided into three kinds, which are action load, permanent load and variable load. Generally speaking, the loads include the self-weight of the space shell structure, the self-weight of the roof maintenance structure, the load of the suspended equipment pipe and the load of the cat walk.
The selection of space frame frame should be combined with the plan shape of the building, requirements, load and span size, support situation and economic factors such as comprehensive consideration.
The selection of space frame frame should be combined with the plan shape of the building, requirements, load and span size, support situation and economic factors such as comprehensive consideration. Usually, we divide it according to the span size as follows: above 60m span is large span; 30m to 60m is medium span; below 30m is small span.
The current use of: welding is the most common application; high-strength bolt connection in recent years, the rapid development of the use of more and more rivet connection has been basically replaced by welding and high-strength bolt connection, rarely used.
Welding should follow a certain sequence, usually welding the middle node first and then expanding to the nodes at both ends of the truss. This helps to avoid dimensional deviations between the nodes of the joist caused by the accumulation of weld shrinkage towards one end.
Carbon: the higher the carbon content, the higher the hardness of the steel, but its plasticity and toughness is worse.
Using 0.8-1.35mm thick galvanized steel plate to realize the roof structure of plate and frame, spanning 6-36m, without purlin and roof frame, light weight, material saving, although using galvanized steel, the total cost is still lower than the traditional structure.
The steel structure project of the closed coal yard of the power plant adopts the technologically advanced prestressed arch truss structural scheme, the structural span reaches 199m (net span between supports 191m), the truss spacing is 30m, and the weight of the single-bay prestressed arch truss reaches 450 tons.
The Vertical Farm creates an unforgettable face for horticultural architecture in the city with its finely crafted glass façade, monumental entrance hall, and rich multi-layered functionality. Through water reuse, passive heating and natural cooling systems, the building demonstrates how sustainable production of food can be accomplished in an urban environment.
The sliding method assembles steel structural units by pre-assembling them on the ground or in a low altitude position, and then utilizes sliding equipment to horizontally skid them to the designed position, and finally connects and fixes them.
In steel structures, the choice of welded or bolted ball nodes requires a number of factors to be considered, including the force characteristics of the structure, construction conditions, cost budget, and maintenance requirements.
Different types of steel are represented in different ways.
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2024-06-19
