JPS6290430A - Hybrid type air port - Google Patents

Abstract

PURPOSE:To save the ground resources as well as construction cost, shorten the period of construction, and stabilize the offshore site by a method in which a floating structure is extensionally set by connecting shafts in the seaside direction of a reinforcing foundation provided on the seaside end of the construction site on the land side to form a construction site on the offshore side. CONSTITUTION:Reinforcing foundations 21 and 22 where a holding bracket 23 on the land side, having a plurality of brackets and consisting of a reinforced concrete structure 22 supported by many steel piles 21 or concrete, are provided on the seaside end of a construction site 3 on the land side. Many floats 13 are then set, and a connecting shaft 20 is inserted into a bracket 24a provided to the holding bracket 24 on the end of offshore site 1, or the floating structure with a mooring column 18, and the bracket on the land side for connection. The coupling force of the floating structure 14 can thus be raised, the drifting of the structure 14 can also be prevented, and the safety, extendability and connecting reliability of the structure 14 can be enhanced.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a hybrid airport characterized in that a floating structure is extended to a land-side site near the coast to provide a sea-side site. be.

(Prior art) In the past, when an airport was set up on an island or the like and there was a shortage of land, the island was used and land was reclaimed from the sea, as shown in Figure 6.
i.The lack of land can be made up for by new land reclamation off the coast, as in the case of Kobe Boatland, or artificial ground can be constructed by reclaiming land from the sea, as shown in Figure 7. Furthermore, as shown in FIG. 8, there is a floating marine airport in which the entire airport is composed of one or several floating structures, and the floating structures are moored by mooring columns. In Figure 6.7.8, (1) is an island or land, (2) is on the sea, (3) is a site on the land side where the area has been created and built, and (4) is a site on the sea side that has been expanded by land reclamation. , (4 is a floating structure, (5) is a bridge for transportation from other land, (force is a buoyant leg, and (8) is a mooring column installed on the seabed.

(Problems with the prior art) In the case of the conventional airport, if it is a landfill type, it requires a huge amount of soil, which has limitations due to soil resources, national land conservation, and construction costs. When it comes to scale,
Not only will construction take several years to more than 10 years after the design is finalized, it will have a decisive impact on the coastal marine ecosystem and seawater circulation system, and there is a strong possibility that it will cause major problems in marine environmental conservation. There are problems such as:

In addition, in the case of the floating marine airport shown in Figure 8, a long floating structure is placed on the sea, and a wide area is required to be blocked from tides and ocean currents. However, there are problems in that it is difficult to obtain a locking force for the floating structure that can counter this.

(Object of the Invention, Means for Solving Problems) The present invention was developed in order to deal with the above-mentioned problems. A floating structure is extended using a connecting shaft in the direction of the coastline provided on the foundation to form a site on the sea side, and a number of floating bodies and a draft adjustment mechanism are attached to the floating structure, and mooring columns are installed on the sea side of the floating structure. The structure is characterized by a structure in which a reinforced foundation is installed at the shore end of the land-side site, and a floating structure is extended to the sea-side site using a connecting shaft in the direction of the coastline provided on the reinforced foundation. By doing so, it is possible to extend the sea-side site consisting of a floating structure to the land-side site, save significant earth and sand resources, significantly reduce construction time, and construction costs. By increasing the anchoring force of the floating structure against ocean currents, effectively preventing drift by the mooring columns, and by using the floating body and draft adjustment mechanism attached to the floating structure, the floating structure, that is, the site on the sea side, is stabilized. The purpose of the present invention is to provide a hybrid Type 9 airport that solves the above-mentioned problems by improving flexibility, extendability with land-side premises, and reliability of the connecting mechanism.

(Example) Figure #g1 shows the first example of the present invention, and in the figure (1
) is an island, (2) is on the sea, and on island (1) there is a development,
A constructed land site (3) has been established, and a runway has been established on the land site (3).

Furthermore, a reinforced foundation (
(see below), and the floating structure (14) is extended by a connecting shaft (20) in the coastline direction provided on the reinforced foundation,
The floating structure (14) is a site on the sea side for installing a runway, etc. Furthermore, a large number of floating structures (13) are arranged below the floating structure (14), and a number of floating structures are installed on the sides. A draft adjustment mechanism (17) consisting of a pump, etc. is attached, and mooring columns (1B) (18) (dolphin columns) are erected and placed side by side on the sea side of the floating structure (14), specifically on both sides of the tip. The structure is as follows.

To explain in detail the connection structure between the land side site (3) and the floating structure, that is, the sea side site (14), as shown in Fig. A reinforced foundation (21, 22) is provided by constructing a reinforced concrete structure (22) supported by a large number of piles (21) made of concrete or steel.
21, 22) on the sea side, the land-side holding platans (23g) are placed at intervals along the coastline (23) by means such as embedding [in one body] and the connecting shaft (
A retaining bracket (20) on the sea side is attached and has a configuration oriented toward the coastline, and a holding bracket (24g) on the sea side has a plurality of platans (24g) at the end of the floating structure (14).
4) is fixedly installed, and the connecting shaft (24) is fixed to the bracket (24).
0) is inserted and connected.

Further, a passage (25) is connected to the connecting shaft (20) in the reinforced concrete structure (22) of the reinforced foundation (21, 22).
A connecting shaft (2) is provided in parallel to the passageway (25).
0) are provided with several openings (26) for security, maintenance and inspection,
On the sea side of the reinforced concrete structure (22), a slope as shown in the figure is provided, and a breakwater and breakwater wall (28) are provided on both sides of the connection section to prevent the water from washing against the shore. The impact on wave connections is kept to a minimum.

In addition, the runway layer (3α) provided on the land side site (3) and the runway layer (14a) on the floating structure (14)
) is provided with a flexible covering material (29) to cover the connecting portion. The floating structure (14)
The structure is made of steel, reinforced concrete, or a combination thereof, and can be formed into a floating body by providing a large number of cavities (14 holes) on the lower side.

(Other Embodiments) The second embodiment shown in FIG. The third embodiment shown in FIG. In the third embodiment, the site on the sea side is also extended with the same configuration as in the first example.In each of the above embodiments, the use as a site for an airport runway has been explained, but Alternatively, the present invention can also be applied to plants, garbage and sewage treatment facilities, parks, etc. that require a vast site in coastal areas.

(Function) Since the embodiment of the present invention has the configuration as described in i above, there is a concern about land reclamation to secure the airport site, and there is a large amount of soil, its transportation, and a large amount of soil that is needed for the creation of an artificial ground on the sea. In addition to eliminating the need for large-scale work equipment inspection, floating structures, coupling mechanisms, draft adjustment mechanisms, retention columns, etc. for seaside site formation can be manufactured at interrogation factories, etc., and the on-site construction rate is significantly reduced. Satisfactory results have been obtained in terms of construction accuracy, and there is no particular impact on the depth of the ocean, making it easy to construct.

A reinforced foundation is provided at the shore end of the land-side site, and the floating structure is connected by a connecting shaft in the direction of the shoreline that is installed and supported by the reinforced foundation, so the floating structure is not affected by tides and ocean currents in the direction of the shore. The mooring columns provide sufficient anchoring force, that is, resistance force, and the mooring columns provide sufficient resistance against tides and ocean currents in the direction of the coastline, making it possible to minimize the number of mooring columns. That is, drifting of the floating structure is effectively prevented.

Since the floating structure is formed to be long and large, the width of the tilt angle displacement due to the tide is within about 1.0 to 0.05 degrees, and the tilt angle displacement due to the height difference on both sides due to tides and ocean currents. This problem can be fully resolved by adjusting the buoyancy of the floating body using the draft adjustment mechanism, ensuring sufficient extension of the land-side site and the sea-side site formed by the floating structure, and further improving the reliability of the connection mechanism. .

Since the floating structure on the movable side is connected to the land-side site on the fixed side via the above-mentioned connection mechanism, it is considered that the movement of the floating structure is likely to generate an axial reaction force including a large impact force. However, the axial reaction force and impact force from the floating structure side are effectively reduced by the land-side site on the fixed side, and the load conditions on the connection shaft can be relaxed, and sufficient connection reliability can be obtained. The connecting mechanism can be inspected and maintained within a passage provided in the reinforced foundation on the land side.

(Effects of the Invention) As described above, the present invention provides a reinforcement base @ (21, 22) at the shore end of the land side site (3, 3), and connects a connecting shaft ( 20) allows floating structures (
14) will be extended to the offshore site 141I, and a floating structure θ will be constructed.
A large number of floating bodies (13) and draft adjustment mechanisms (17) are attached to the boat, and mooring columns (14) are installed on the sea side of the floating structure (14).
18), it is possible to extend the offshore site by connecting the floating structure to the land side site, saving a huge amount of earth and sand resources, significantly reducing construction time and construction costs, and reducing the need for reinforced foundations. The connecting shaft in the direction of the coastline increases the anchoring force of the floating structure against tides and ocean currents in the direction of the coast, and the parallel arrangement of mooring columns effectively prevents the floating structure, that is, the site on the sea side, from drifting. By adding a draft adjustment mechanism and a floating structure, the stability of the floating structure, that is, the offshore IMII site, the extendibility with the land 5III site, and the reliability of the connection mechanism are improved, resulting in an excellent offshore extension airport.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of drawings]

FIG. 1 is an overall perspective view showing the first embodiment of the present invention, and FIG.
Figure 3 is a perspective view showing the second embodiment, Figure 3 is a perspective view showing the MT3 embodiment, Figure 4 is a vertical sectional view of the coupling mechanism of each embodiment, and Figure 5 is the land side end face of the coupling mechanism. 6 is a perspective view showing a conventional example, FIG. 7 is a perspective view showing another conventional example, and FIG. 8 is a perspective view showing another conventional example. 3, 3': Land-side site, 13: Floating body, 14: Floating structure, 17: Draft adjustment mechanism, 18: Mooring column, 20: Connection shaft, 21, 22: Reinforcement foundation sub-agent Patent attorney Kaimoto Shigemono 2 people

Claims (1)

[Claims] A reinforced foundation is provided at the shore end of the land-side site, and a floating structure is extended using a connecting shaft in the direction of the shoreline provided on the reinforced foundation to form the sea-side site, and the floating structure is equipped with a large number of floating bodies and draft adjustment. A hybrid airport characterized in that a mechanism is attached and mooring columns are arranged in parallel on the sea side of the floating structure.