JPH0427001A - Heliport - Google Patents

Abstract

PURPOSE:To minimize the increase of weight by a method in which upper and lower floor slabs as upper taking-off floor and lower refuging floor are set at a given level above the roof and connected with a three-dimensional trussed beam. CONSTITUTION:An upper taking-off floor slab 2 and a lower refuging floor slab 3 are set on a support base 1 consisting of columns or three-dimensional truss and connected by trussed beams 4 on the roof of a building A. The slab 2 is also provided for taking-off purpose in the range other than dangerous range X of the height of flame during fire. The distance H between the slabs 2 and 3 is regulated to about 2m and used as shelter for urgent refuging purpose or as wind breaker for helicopter during landing and taking-off periods. The slabs 2 and 3 are connected by a step 5. The safety of the helicopter port can thus be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heliport, particularly a heliport installed on the roof of a high-rise building.

[Problem to be solved by the invention]

Generally, the rooftops of high-rise buildings are used for various equipment such as cooling towers, heat pumps, elevated water tanks, and gondolas for cleaning exterior walls, and there is no room for new helicopter landing sites.

The reality is that there is no room to install even pillars to support the landing site. Additionally, the pillars supporting the landing site cannot be installed freely due to their relationship with the building; they must be positioned so that the load can be placed on top of the pillars and beams of the building.

In addition, especially when installing in an existing building, there are many cases where there is no room to install the equipment due to the lifting of materials.
In many cases, it is necessary to use a building's elevator, which is subject to restrictions such as weight.

In addition, simply installing a helipad on the roof requires preparing a separate evacuation site for fire, smoke, heat, etc. while waiting for rescue.

In addition, it is desirable to have a place to evacuate from the downwash (strong airflow caused by the rotor downwards) of an incoming helicopter until the helicopter lands, but with the current usage of rooftops, it is difficult to secure a place to evacuate. is difficult.

In addition, boats installed on rooftops must have fire-resistant properties to ensure structural safety against building fires, but the basic framework is made of weather-resistant fire-resistant materials. It is heavy to install it on a certain steel frame.In addition, RC and SRC structures whose structures themselves have fire resistance are even heavier.Since they are installed on the roof, there is a burden on the structural strength of the building. In order to reduce this, an increase in weight must be avoided.

This restriction is particularly significant when installing in an existing building. This invention was developed to address the above-mentioned problems.

[Structure of the invention]

The helipad of this invention is installed at a required height on the rooftop,
It consists of an upper takeoff and landing deck and a lower evacuation deck, with the upper and lower decks connected by three-dimensional truss beams.

〔Example〕

Fig. 1 shows an outline of the present invention, which is installed on the roof of a building A on a support base 1 made of pillars or three-dimensional trusses, and consists of an upper takeoff and landing floor slab 2 and a lower evacuation floor slab 3. The upper and lower floor slabs 2 and 3 are connected and supported by a truss beam 4 made of a three-dimensional truss or the like.

Evacuation is expected to be difficult due to fire and smoke engulfing the roof slab. Then, as a result of simulating the model building using a fire property prediction program, the temperature 1
The height of the flame up to about 00°C is predicted to be about 12m, so the inside of the 174 circle with a radius (R) of 12m where the flame will rise and collapse due to the crosswind is the danger zone X, and the takeoff and landing deck 2 shall be located outside the danger area -, and can also be used as a windbreak for helicopters during takeoff and landing.

The upper and lower floor slabs 2 and 3 are connected from the rooftop through an ascending and descending section such as stairs 5.

2 and 3 show different embodiments, and the same reference numerals as in FIG. 1 indicate the same parts, respectively.

〔Effect of the invention〕

The present invention has the above configuration, and by using truss beams with high edges for the floor structure, the spacing between the pillars supporting this floor structure can be increased, so that the heliport can be installed with a minimum number of pillars. . Moreover, since this truss beam is a three-dimensional truss frame, it is not subject to any restrictions on the fulcrum position on the floor structure side.

Therefore, the pillars supporting the floor structure can support the floor structure in a free manner from the place where they can be installed on the building side.

For example, in the embodiment, the floor structure is provided by diagonal columns.

Since this helipad uses a three-dimensional truss frame, it is possible to construct individual members as lightweight and short members, and therefore the members can be transported to the roof using the existing building's elevators. Furthermore, each member can ultimately have a weight that can be transported by human power.

In addition, this heliport has a lower floor slab for evacuation areas using the lower chord of the truss beam below the upper floor slab where helicopters take off and land.

By (temporarily) taking shelter in the lower deck, it is possible to avoid the down-wound of an incoming helicopter. In addition, since this floor slab G is located sufficiently above the building, it is possible to avoid fire, smoke, heat, etc. in the event of a building fire, and safely wait for the arrival of a rescue helicopter.

This helipad 1- is installed above to avoid the area affected by heat in the event of a building fire. Also, there are no flammable materials in the helipad. Therefore, the parts that need to have fire resistance are:
This area is within a few meters from the helipad's roof, and there is no helipad itself. Therefore, the increase in weight of the helipad section due to the installation of the refractory material can be minimized.

[Brief explanation of drawings]

Figure 1 shows an overview of the invention, Figures 2 and 3.
The figures are perspective views showing different embodiments of the invention. 1... Support stand, 2... Upper floor slab, 3... Lower floor slab, 4... Truss beam, 5... Stairs. death/'

Claims (1)

[Claims] A heliport installed at a required height on the rooftop, consisting of an upper takeoff and landing floor slab and a lower evacuation floor slab, with the upper and lower floor slabs connected by a three-dimensional truss beam.