增加铝镁锰彩钢板屋面系统抵风能力的方法

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为了满足各种建筑形式的要求，铝镁锰屋面系统的细部处理是非常重要的。本文将向您介绍屋面系统的抗风处理方法：
1、 特殊处理：
一。檐口特殊处理：

屋面板在屋盖系统的檐口处向下折叠，同上，通过改变应力模式，大大降低了檐口处的风造成损坏的可能性。此外，在檐口密封条下面增加了一个长滴水片，以加强中部的完整性，增加屋面板的整体挠度。
2。山脊和山墙的特殊处理：
在分析以往铝镁锰屋面风害案例的基础上，指出屋脊和山墙的早期破坏主要发生在屋脊和山墙的泛水中。这些泛水在风荷载作用后被掀起，造成局部破坏，从而降低了整个屋盖系统的抗风稳定性，最终导致整个屋盖倒塌。在这一过程中，风对屋顶系统的破坏较大的是薄弱部分。针对这种情况，在设计中一般考虑将固定在支架上的屋面泛水和山墙泛水向下折叠，以有效地增加抗风能力。
2、 固定模式：
作为传统的异型金属屋面，其固定形式落后，决定了其抗风能力不足。例如，由螺钉贯穿件形式固定的车顶板在螺钉帽和面板之间有一个小的接触区域。当遇到强风时，由于反复的正负风压，屋面板在钉孔处产生应力集中，导致撕裂。尽管檩条上的螺丝钉还在，但屋面板已经被风吹走了。
竖锁式铝镁锰屋盖体系不同于传统的板结构形式。坚固的铝合金固定座先用檩条固定，然后将屋面板夹在固定座的梅花头上，再用电动锁紧机将搭接板肋锁紧在固定座上。这种固定形式不需要穿透板面，所以屋面板不会随意损坏，当然也不存在应力集中的问题。
在7.0kpa的反复加载试验中，试件（包括屋面板、固定座和螺钉）没有损坏，证明了该系统的优良性能。

In order to meet the requirements of various building forms, the detail treatment of the aluminum magnesium manganese roof system is 

very important. This paper will introduce the methods of wind resistance treatment of the roof system to you:

1、 Special treatment:
1. Special treatment of cornice:
The roof panel is folded down at the cornice of the roof system, the same as above, and the possibility of damage caused by the wind at the cornice is greatly reduced by changing the stress mode. In addition, a long dripping piece is added under the cornice sealing strip to strengthen the integrity of the central part and increase the overall deflection of the roof panel.
2. Special treatment of ridges and Gables:
Based on the analysis of the past cases of aluminum magnesium manganese roof system damaged by wind, the early failure of ridge and gable occurred in ridge flashing and gable flashing. These flashings were lifted after the wind load, resulting in local damage, thus reducing the wind resistance stability of the whole roof system, and the whole roof collapse occurred at the end. In this process, the larger damage caused by wind is the weaker part of the roof system. In view of this situation, the roof flashing and gable flashing fixed on the supports are generally considered to fold down in the design, so as to effectively increase the wind resistance.
2、 Fixed mode:
As a traditional profiled metal roof, its backward fixing form determines its insufficient resistance to the wind. For example, the roof panel fixed by the screw penetration form has a small contact area between the screw cap and the panel. When encountering strong wind, because of the repeated positive and negative wind pressure, the roof panel produces stress concentration at the nail hole, which leads to tearing. Although the screw remains on the purlin, the roof panel has been blown away.
The vertical locking type aluminum magnesium manganese roof system is different from the traditional plate construction in the fixed form. The strong aluminum alloy fixed base is fixed with the purlin first, and then the roof panel is clamped on the plum head of the fixed base, and then the overlapping plate rib is locked on the fixed base with the electric locking machine. This fixed form does not need to penetrate the plate surface, so the roof panel is not damaged arbitrarily, Of course, there is no problem of stress concentration.
In the repeated loading test of 7.0kpa, the test pieces (including roof panel, fixed seat and screw) were not damaged, which proved the excellent performance of the roof system.