Large-span steel structure roof transformation method

Abstract

The invention provides a large-span steel structure roof transformation method. The method is used for transforming an original roof of a large-span steel structure, and comprises the following stepsthat (1) a first roof plate located in the middle of the original roof is dismounted, a second roof plate located on the edge portion of the original roof and a third roof plate located between the first roof plate and the second roof plate are reserved, and the lower portion of the first roof plate is paved with a safety net and fireproof tarpaulin, so that construction safety is guaranteed; (2)an ETFE air pillow film is arranged on a first steel structure corresponding to the original position of the first roof plate; and (3) an aluminum-magnesium-manganese metal roof plate covering the third roof plate is additionally arranged in an area between the ETFE air pillow film and the second roof plate. The problem of roof leakage can be thoroughly solved; and the roof structure load can be reduced, large disassembly and large construction can be avoided, reconstruction funds can be saved, and an existing building can meet the requirements of comfort, energy conservation, environmental protection and attractiveness.

Description

technical field [0001] The invention relates to the technical field of roof reconstruction, in particular to a method for roof reconstruction of a large-span steel structure. Background technique [0002] With the rapid development of social economy, many existing buildings can no longer meet the current development needs, resulting in a high vacancy rate of these existing buildings, which are not fully utilized, resulting in a waste of resource stocks. In order to effectively solve this problem, the government issued a number of policy documents to actively guide the market to renovate and expand these existing buildings, especially for buildings with long-span steel structures (such as factories, banquet halls and exhibition halls, etc.), Most of the original roof structure is constructed with color steel plates. After a long period of use of large-span steel structure buildings, the roof is prone to leakage problems. The conventional reconstruction method is to spray wate...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of social economy, many existing buildings can no longer meet the current development needs, resulting in high vacancy rate of these existing buildings, not fully utilized, resulting in waste of resource stock

In order to effectively solve this problem, the government issued a number of policy documents to actively guide the market to renovate and expand these existing buildings, especially for buildings with long-span steel structures (such as factories, banquet halls and exhibition halls, etc.), Most of the original roof structure is constructed with color steel plates. After a long period of use of large-span steel structure buildings, the roof is prone to leakage problems. The conventional reconstruction method is to spray waterproof paint on the leaks or re-make the waterproof layer. , with the passage of time, it is difficult to guarantee that there will be no secondary leakage, and it will not meet the requirements of energy saving, environmental protection, comfort and beauty

At present, in order to meet the requirements of energy saving, many existing buildings add insulation layer to the roof, change the slope from flat to slope, and green the roof. This transformation method will increase the roof load, make the structure face safety or increase the project cost or the problem of roof leakage.

In addition, when the long-span steel structure roof is reconstructed according to the above method, the construction process is complicated, the reconstruction effect is poor, and it is often difficult to achieve the expected goal. At the same time, it may bring other new problems

Therefore, it is difficult to meet the safety, economy, applicability, aesthetics and environmental protection requirements of existing buildings only by relying on existing renovation methods.

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