Patent Application
20090084061
(1) Field of the Invention
The invention relates to a fire-prevention structure for buildings, and more particularly to a fire-prevention structure that can effectively isolate a fire in the building so as to avoid a possible catastrophe collapse of the building resulted from the fire.
(2) Description of the Prior Art
Due to limited space in the metropolitan area, skyscrapers have become an inevitable solution to the growing population. Major frames of most skyscrapers are steel structures, featuring in light weight, quick construction term and quality construction performance. Therefore, in constructing a skyscraper, the steel structure is superior to the steel-reinforced concrete structure.
Referring now to
It is well known that a major disadvantage of the steel structure is its weak heat-resistance. In the conventional structure 1, the connection between the steel columns 112a, 112b or between the steel column 112a and the steel beam 114 is made by direct welding. As long as a fire to the steel-structured building, the temperature high to thousand degrees would quickly soften the steel structures. Further more, for the superior heat conductivity in steels, the local extreme-high temperature will be rapidly spread out to the whole steel structures of the building. As soon as any steel column 112 of the structure 1 begins to melt, a possible buckling would attack the steel column 112. Terribly, if the buckled steel column 112 cannot withstand the load contributed by the portion of the building above the steel column 112, a possible catastrophe collapse of the building, like the 911 tragedy in the world trade center, would be foreseen.
If there do occur a building collapse due to a fire, it can be expected that the loss in human life and the cost in economics would be too huge to be acceptable. In particular, as described above, it is fully understood that the major cause for a skyscraper to collapse in a fire or an explosion is the poor heat-resistance of the steel structure of the skyscraper. Hence, any fire-prevention effort in structure the skyscraper so as to control the damage resulted from a fire and to limit the scale of the fire is definitely worthwhile.
Accordingly, it is an object of the present invention to provide a fire-prevention structure for buildings, by which, while meeting a fire, major heat of the fire can be limited in a specific region and thus a possible collapse of the building can be avoided.
In the present invention, the fire-prevention structure for buildings includes at least a first fire-prevention district, a fire-prevention floor slab, and a second fire-prevention district, in which the fire-prevention floor slab is constructed between the first fire-prevention district and the second fire-prevention district.
The first fire-prevention district further includes at least a steel-structured story. The steel-structured story has a plurality of first steel columns and a plurality of first steel beams. The first steel column is a hollow rectangular column with an end opening. The first steel beam is connected to a lateral side of the first column.
The fire-prevention floor slab includes a corrugated steel roof plate and a fire-resistant material. The corrugated steel roof plate is engaged with the first column. The fire-resistant material is layered on the corrugated steel roof plate and filled into the end opening of the first column. In the present invention, the fire-resistant material can be a steel-fiber reinforced concrete, a calcium silicate, or an asbestos.
The second fire-prevention district further includes at least a steel-structured story. The steel-structured story has a plurality of second steel columns and a plurality of second steel beams. The second steel column has a lower end portion further extruding an engagement plate and an engagement column. The engagement plate is fixed to the fire-prevention floor slab through anchor bolting, and the engagement column is protruded into the end opening of the first steel column. The engagement column further has a plurality of peripheral shear connectors to ensure the holding of the engagement column with the fire-resistant material inserted inside the end opening.
In the present invention, the fire-prevention structure is to divide the whole structure of the building into plural fire-prevention districts, in which any two adjacent fire-prevention districts, say the aforesaid first and second fire-prevention districts, are not directly engaged, but through the in-between fire-prevention floor slab. For the fire-prevention floor slab includes the fire-resistant material, the fire or explosion in any single fire-prevention district as well as the thermal energy therefrom can be controlled substantially within the incident fire-prevention district. Therefore, a catastrophe collapse to the afire building can be avoided, and the loss of the human life and properties from the fire can be reduced to a minimum.
All these objects are achieved by the fire-prevention structure for buildings described below.
The present invention will now be specified with reference to its preferred embodiment illustrated in the drawings, in which:
The invention disclosed herein is directed to a fire-prevention building for buildings. In the following description, numerous details are set forth in order to provide a thorough understanding of the present invention. It will be appreciated by one skilled in the art that variations of these specific details are possible while still achieving the results of the present invention. In other instance, well-known components are not described in detail in order not to unnecessarily obscure the present invention.
Referring now to
In
As shown in
In the present invention, the fire-prevention structure is to divide the whole structure 2 of the building into a plurality of the fire-prevention districts 3, in which, for example in
While the present invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be without departing from the spirit and scope of the present invention.
