JPH0692706B2 - Underground parking structure and its construction method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a frame structure of an underground parking lot and a method of constructing the same, and particularly to a frame structure of an underground parking lot in which the outer surface of the frame is formed into a substantially cylindrical shape. , And how to build it.

[Conventional technology]

In recent years, securing a site has become a serious problem in urban areas, and it is extremely difficult to secure a parking space.

In order to secure the number of vehicles that can be stored in a small site, it is effective to have a configuration that allows the vehicles to be stored in three dimensions.
Like the surroundings, it is equipped with an elevator mechanism (gondola mechanism) and can mechanically store multiple vehicles in a three-dimensional parking lot, or multiple floors are formed on the ground and a slope is provided between each floor. There is provided a self-propelled multi-storey parking lot where a driver himself / herself takes a vehicle to each floor to form a road, or a three-dimensional underground parking lot utilizing the underground of a building.

Of the above-mentioned multi-storey parking lots, especially the underground ones use the basement of the building, so the land can be used effectively without the need of a new site as a parking lot, and the building has a residential floor. In other words, since the parking lot is integrated with the parking lot, it is convenient to move from the parking lot when the building has a requirement.

[Problems to be Solved by the Invention]

However, the following problems occur when constructing an underground parking lot.

That is, the conventional underground parking lot generally has a skeleton with a rectangular cross section. However, in such an underground parking lot formed in a rectangular shape, as the depth increases, a large cross-sectional force is generated in the structure due to earth pressure, water pressure, etc. of the ground. It is necessary, and it is time-consuming and costly.
In addition, even if the support work was not used, it was necessary to use the caisson type and the ultra-thick underground continuous wall, and there were many restrictions in terms of construction period and cost.

In addition, since the conventional rectangular underground parking lot is difficult to have a large cross section as described above, it is often the case that the planar size is smaller than that of the building constructed above, which prevents the maximum use of the site. Not only that, but it was still necessary to provide a large number of piles and the like outside the underground parking lot to support the building.

The present invention has been made in view of the above circumstances. Of course, the function as a parking lot can be fully exhibited, and by realizing a large cross section, effective use of the site can be achieved, and the foundation of the building The structure of the underground parking lot that can streamline the construction by clarifying the function of the above and the construction method.

[Means for Solving the Problems]

According to a first aspect of the present invention, a structure of a structure of an underground parking lot constructed in a lower ground of a building is structured such that a cylindrical structure outer wall having a substantially circular cross section and an axial center portion of the outer wall are located inside the structure. A cylindrical partition wall that forms a central storage space, and a radial partition wall that extends radially from the cylindrical partition wall toward the outer wall and divides the space formed on the outer peripheral portion of the cylindrical partition wall into a plurality of outer peripheral storage spaces. And.

The invention according to claim 2 is a method for constructing a frame structure of an underground parking lot according to claim 1, which comprises a step of forming an underground continuous wall in a substantially circular ring shape in the ground, and the underground connection. It has the process of excavating the ground surrounded by a wall, and the process of integrally forming the cylindrical partition wall and radial partition wall of Claim 1 in the excavation hole formed by the said process with the said underground continuous wall. It is characterized by that.

[Operation] By making the structure cross section of the structure constructed in the ground circular, the bending moment and the shearing force are hardly generated in the structure cross section, and only the axial force is generated. Therefore, the planar shape can be increased, and the wall thickness does not need to be thicker than necessary. Further, the cylindrical partition wall formed inside the cylindrical outer wall, and the radial partition wall connecting the cylindrical partition wall and the outer wall function as a foundation pile together with the outer wall. Furthermore, by forming the outer wall into a cylindrical shape as described above, the outer wall has excellent proof stress against earth pressure, so after constructing the outer wall by the underground continuous wall construction method, It is possible to excavate the enclosed part without using shoring.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 show the basic structure of the skeleton of an underground parking lot according to the present invention.

The skeleton 1 of this underground parking lot is located in the substantially cylindrical outer wall 2 formed in the ground G and the axial center of the outer wall 2.
A cylindrical partition wall 4 that forms a central storage space 3 inside, and a space that is radially formed between the cylindrical partition wall 4 and the outer wall 2 and that is formed in the outer peripheral portion of the cylindrical partition wall 4 are provided in a plurality of outer peripheral portions. A radial partition wall 6 that is divided into storage spaces 5, 5 ,.

In this case, the outer wall 2 is the underground continuous wall 2A and the underground continuous wall.
It is formed of a retrofit wall 2B integrally formed on the inner surface side of 2A. Here, this outer wall 2 is, for example, 30
It has a diameter of a little over m and is formed from the surface to a depth of 30 to 50 m.

In the present embodiment, the cylindrical partition wall 4 has a regular octagonal cross section as shown in the drawing, and is formed on the bottom plate 7 constructed near the lower end portion of the outer wall 2. here,
The inner diameter of the cylindrical partition wall 4 is at least 4 for an ordinary vehicle.
The base is formed to have a diameter that can be juxtaposed with a sufficient margin, and the internal space is defined as the central storage space 3.

Further, the radial partition wall 6 has an outer wall 2 (retrofitted wall 2) from each of eight side portions of the cylindrical partition wall 4 which has a regular octagonal cross section.
It is formed radially toward B).
The space formed between the outer wall 2 and the cylindrical partition wall 4 is divided into eight elongated spaces having the same shape (outer peripheral storage spaces 5, 5, ...).

As shown in FIG. 2, the skeleton 1 having the above structure is constructed as a foundation of a building C constructed on the ground, and the building C is an upper part of the skeleton 1, that is, the outer wall 2, a cylinder. The partition walls 4 and the radial partition walls 6 are continuously constructed on top of each other.

Hereinafter, a method for constructing the skeleton 1 of the underground parking lot configured as described above will be described.

First, the underground continuous wall 2A that is closed in a substantially cylindrical shape is constructed in the ground G by the underground continuous wall method.

As is well known, the underground continuous wall method uses a stabilizing solution to excavate continuous groove-shaped holes in the ground while stabilizing the hole wall.
A continuous reinforced concrete wall is built in it. In this underground continuous wall construction method, a wall body is usually constructed in units of a plurality of elements divided along the direction in which the wall body is formed. The cross section is rectangular. Therefore,
The outer wall 2, which is a continuous body of these elements, has a polygonal cross section in a strict sense, but when the diameter is large like the above-mentioned body 1, it can be approximately regarded as a cylinder.

If the underground continuous wall 2A is constructed in a tubular shape, then the portion of the ground G surrounded by the underground continuous wall 2A is excavated. At this time, the underground continuous wall 2A has a cylindrical shape,
That is, since it has a circular cross section, it has a much better resistance to soil water pressure from the surrounding ground G than a rectangular cross section. Therefore, when excavating the internal ground,
Since it is not necessary to provide supporting works, beams, etc., the efficiency of excavation itself can be improved, and the material cost required for such supporting works and the assembly / disassembly process can be deleted.

When the ground in the underground wall 2A is excavated, concrete is placed in the bottom of the excavation hole to construct the bottom slab 7.

After the bottom plate 7 is constructed, the retrofitting wall 2B, the tubular partition wall 4, and the radial partition wall 6 may be sequentially constructed from the bottom plate 7 upward. The retrofit wall 2B and the underground continuous wall 2A are joined together by using a gibber streak or the like to achieve integration. That is, here, the frame 1 is formed by the underground continuous wall 2A and the retrofitted wall 2B.
That is, the outer wall 2 is configured. The retrofitted wall 2B is mainly formed for the purpose of shaping the inner surface of the underground continuous wall 2A.

Base 1 of an underground parking lot constructed in the lower ground of Building C
With the above structure, not only the outer wall 2 having a cylindrical shape, but also the cylindrical partition wall 4 and the radial partition wall 6 integrally constructed in the length direction sufficiently function as a foundation pile for the building C. Will be things. Therefore, at the same time as the construction of the frame 1 as the parking lot, the foundation construction of the building C is completed, and an extremely efficient construction process is realized.

Moreover, since the outer wall 2 that directly resists the earth pressure of the ground G has a cylindrical shape, this frame 1 exhibits excellent proof stress against earth pressure and its cross section (planar size). ) Can be increased. Therefore, as in the embodiment, the structure 1 can be made the same size as the building C on the ground, the site area can be maximized, and the structure C is supported on the outer side of the structure 1. It is possible to completely eliminate or reduce other foundation works such as installing piles separately.

Further, since the outer wall 2 has excellent proof stress, the wall thickness can be reduced, and a large internal space for housing the vehicle can be secured.

Moreover, the outer wall 2 having a cylindrical shape has a strength capable of withstanding the soil water pressure of the surrounding ground G by itself, but in the above-mentioned skeleton 1, the cylindrical outer wall 2 has a cylindrical partition wall. 4 is formed and the cylindrical partition 4
Since the outer wall 2 and the outer wall 2 are connected to each other by the radial partition wall 6, the stress generated by the horizontal external force applied to the outer wall 2 is efficiently transmitted / dispersed to the cylindrical partition wall 4 and is extremely strong. Structure is realized.

Further, if the skeleton 1 is constructed by the above method, it is not necessary to install a supporting work, a girder or the like at the time of excavating the ground G, and the labor and preparation / disassembly process for preparing these materials can be eliminated. Construction at low cost and in a short period of time is realized.

FIG. 3 to FIG. 6 show an example of the structure of the parking lot P constituted by the skeleton 1 having the basic structure as described above.

As shown in this figure, the vehicle storage function 10 is installed in all of the central storage space 3 and the eight outer peripheral storage spaces 5, 5, .... This vehicle storage mechanism 10 is a so-called gondola type that is generally applied in a mechanical multistory parking lot, and a gondola 1 for storing a vehicle is used.
It is configured so that 1,11, ... move up and down along an endless orbit. In this case, the vehicle storage mechanism 10 is the fourth
As shown in FIG. 5 and FIG. 5, one is installed in each of the outer peripheral storage spaces 5, and two are installed in the central storage space 3.

Further, FIG. 4 shows a cross section of the parking lot which is horizontally cut along the ground surface, that is, along the line l-l in FIG.

At this portion, the central storage space 3 is closed by a floor slab 12, and a first turntable 13 is provided at the central portion of the floor slab 12.

In the figure, reference numeral L ₁ is an approach road formed on the ground to the parking lot P, and a vehicle entering the approach road L ₁ is
It is possible to proceed onto the floor slab 12 having the first turntable 13 through the conduction path 14.

Further, the floor slabs 16, 16, ... At the same level as the floor slab 12 are provided between the outer wall 2 and the cylindrical partition wall 4 forming each outer peripheral storage space 5.
Each floor slab 16 is formed with openings 16a, 16a so that the gondola 11 of the vehicle storage mechanism 10 can pass therethrough. In addition, regarding the vehicle storage mechanism 10 installed in the outer peripheral storage space 5 in which the conduction path 14 is provided,
Since it terminates below the conducting path 14, the gondola 11 does not pass through the conducting path 14.

In addition, among the eight surfaces forming the cylindrical partition wall 4, the central storage space 3 and the outer peripheral storage space 5 are made to communicate with seven surfaces other than the surface where the conduction path 14 is formed, Communication ports 17 are formed to allow a vehicle to pass between the floor slab 12 and the floor slab 16, respectively.

Further, in the embodiment, in addition to the entrance / exit 15, the outer wall 2 is provided with entrances / exits 15 ', 15' ... Which communicate directly from the floor slab 16 to the outside.

FIG. 5 shows a cross section of the skeleton 1 taken along the line m--m in FIG. That is, the fourth
It shows a portion corresponding to the first basement floor when the portion shown in the figure is the first floor above the ground.

In this portion, a floor slab 18 is installed in the central storage space 3, and the gondola 11 of the two vehicle storage mechanisms 10 installed in the central storage space 3 penetrates the floor slab 18. Openings 18a, 18a, ... Are formed. Reference numeral L ₂ in the drawing denotes an approach path to the parking lot P extending underground, and a vehicle entering the approach path P ₂ can enter from the entrance 20 through the connecting path 19 to the floor slab.
You can go up to 18.

The floor slab 18 is located below the floor slab 16 shown in FIG. 4, and when the floor slab 16 is regarded as the first floor above the ground, the floor slab 18 corresponds to the first floor below the ground. In addition, a second turntable 21 is installed substantially in the center of the conduction path 19. A position of the entrance L ₂ facing the entrance 20 is a preliminary floor 22A formed by extending outside the frame 1, and the preliminary floor 22A has a third lifting function.
An opening 22a for a turntable 23 (described later) is provided.

FIG. 6 shows a cross section of the skeleton 1 taken along the line nn in FIG.

In this part, a floor slab 24 having openings 24a, 24a is provided so as to correspond to one of the outer peripheral storage spaces 5, and the floor slab 24 is formed by opening the outer wall 2 to form an entrance / exit. A preliminary floor 22 formed by extending to the outside of the frame 1 through 25
B It has become continuous. The floor slab 24 and the spare floor 22B are respectively the conductive paths 19 shown in FIG.
And the auxiliary floor 22A, which is formed below the auxiliary floor 22A.
When 22A is assumed to be the first basement floor, the floor slab 24 and the spare floor 22B correspond to the second basement floor.

The above-mentioned third turntable 23 is installed at a position facing the doorway 25 on the spare floor 22B.
The third turntable 23 has an elevating function and is capable of moving the turntable 23 up and down between the spare floor 22B and the opening 22a of the spare floor 22A.

The above-configured underground parking lot P has the following functions.

The user of this parking lot can use the approach path L _{1 on the} ground or the approach path L ₂ to the underground.

The vehicle that has entered the approach path L ₁ on the ground reaches the first turntable 13 provided in the central portion of the floor slab 12 from the entrance 15 shown in FIG. The central storage space 3 in which the turntable 13 is installed and the outer storage spaces 5, 5, ... Are connected to the respective wall surfaces that form the cylindrical partition wall 4 that surrounds the first turntable 13. Since the communication port 17 is formed, the user vehicle is operated by operating the turntable 13 to select one of the vehicle storage functions 10, 10, ... Installed in the seven outer peripheral storage spaces 5, and the gondola
Placed on 11. That is, the vehicle entering through the approach path L ₁ on the ground is one of the eight outer peripheral storage spaces 5 except for one (the outer peripheral storage space 5 in which the conducting path 14 is formed). Will be stored in the crab.

On the other hand, the vehicle that has entered through the underground approach path L ₂ is first placed on the third turntable 23 installed on the auxiliary floor 22A formed at a position facing the entrance 20 and at the same time as the entrance 20 (underground 1 It is selected whether to carry in from the floor (corresponding to the floor) or from the entrance / exit 25 (corresponding to the second basement).

When carrying in from the entrance 20 (refer to FIG. 5), the turntable 23 is operated to change the direction so that the front part of the vehicle faces the entrance 20. When the direction is changed, enter the hall through the doorway 20 and get on the second turntable 21. This second
In the turntable 21 of the above, it is selected which one of the two vehicle storage mechanisms 10 installed in the central storage space 3 is to be stored, and the gondola 11 of either one of the vehicle storage mechanisms 10 is selected.
Stored on top.

When carrying in from the doorway 25 (refer to FIG. 6), the turntable 23 is lowered while the vehicle is placed on the turntable 23. The third turntable 23 has an elevating function, and can thus elevate between the auxiliary floor 22A and the auxiliary floor 22B. When the third turntable 23 is in the lower position as described above, the upper auxiliary floor 22A opens, so that, for example,
An automatic circuit breaker or the like (not shown) may be installed in front of the opening 22a to prevent the vehicle from entering the auxiliary floor 22A when the third turntable 23 is not located at the upper position.

When the turntable 23 is lowered to a position flush with the spare floor 22B, the vehicle front part changes its direction so that it faces the doorway 25, passes through the doorway 25, and goes through the floor slab 24 to the gondola of the vehicle storage mechanism 10. 11 Store on top.

That is, the vehicles carried in through the doorway 15 on the ground are stored in seven of the eight outer peripheral storage spaces 5, and the vehicles carried in through the doorway 20 on the first basement floor are stored in the central storage space 3. Then, the vehicle carried in from the entrance 25 on the second basement floor will be stored in the remaining one outer peripheral storage space 5.

The exit of the stored vehicles is performed as follows.

The vehicle carried in through the entrance 20 corresponding to the first basement floor and the entrance 25 corresponding to the second basement floor is subjected to the reverse procedure of the above-mentioned carrying-in procedure. That is, all vehicles that have entered through the underground approach path L ₂ will exit through the same approach path L ₂ .

On the other hand, for a vehicle that has entered through the approach path L ₁ on the ground and is stored in the seven outer peripheral storage spaces 3, a slightly different exit method is adopted. That is, in the present embodiment, as shown in FIG.
In addition to the entrance / exit 15 that opens to L ₁ , there are five outer peripheral storage spaces 5
Since each has a doorway 15 ',
When leaving, it is possible to use these 6 entrances and exits. That is, in the case of a vehicle housed in the two outer peripheral storage spaces 5 that do not have the doorway 15 (15 ') in FIG. It exits by a procedure such as going on 13 and then changing direction and then exiting from the entrance L ₁ through the entrance / exit 15, but it is stored in the five outer peripheral storage spaces 5 having its own entrance / exit 15 '. The vehicles will be exited radially from their respective entrances / exits 15 '.

According to the above-mentioned parking lot P, since the entrances and exits are provided at three locations vertically and the entrances and exits (exits) are radially provided at a plurality of locations on the ground, even if many vehicles are used, those many vehicles are located at one location. It is possible to alleviate the partial congestion of users' vehicles without concentrating on the entrance.

Further, by constructing and operating the parking lot P constituted by the skeleton 1 as described above, the skeleton structure exhibiting the excellent action as described above can be effectively utilized to the maximum extent.

In addition, in the embodiment, the building C has the same cylindrical shape as the building 1 of the parking lot, but the building C may have a rectangular shape. However, in that case, since the building C has a form protruding beyond the frame 1 as the base, it is necessary to provide a pile or the like at the protruding portion. However, even in that case, since the skeleton 1 can have a larger cross section than the skeleton of the conventional underground parking lot, the number of separately installed piles can be reduced as much as possible, and the construction of the skeleton of the parking lot and the basic work separately performed can be simplified. Becomes

〔The invention's effect〕

As described above, according to the skeleton structure of the underground parking lot according to claim 1, since the outer wall that directly resists the soil water pressure has a substantially cylindrical shape, it has excellent proof stress against soil water pressure. It will be demonstrated, the planar shape can be made large, and the wall thickness of the outer wall can be made thin, so that highly efficient and effective use of the site can be achieved and a large internal space can be secured. In addition, since the outer wall has a substantially cylindrical shape, the cylindrical partition wall and the radial partition wall that are integrally constructed on the outer wall function as the foundation piles of the building, all of the foundation work of the building or Most of the work is done at the same time as the structure of the underground parking lot, and an extremely rational process is realized.

Further, according to the method of constructing the skeleton of the underground parking lot according to claim 2, there is no need to install a supporting work or a girder at the time of excavating the ground, and the labor and preparation / disassembly process of those materials can be saved. Even if it is excluded, it is possible to obtain an excellent effect that the skeleton structure of the underground parking lot according to claim 1 can be constructed at low cost and in a short period of time.

[Brief description of drawings]

Fig. 1 is a horizontal sectional view showing the structure of the underground parking lot, Fig. 2 is a vertical sectional view showing the structure of the underground parking lot, and Fig. 3 is a vertical sectional view showing the underground parking lot together with a part of the upper building. Figure, 4th
The drawing is a view taken along the line l-l of FIG. 3, FIG. 5 is a view taken along the line m-m of FIG. 3, and FIG. 6 is a view taken along the line n-n of FIG. 1 ... Base of underground parking lot, 2 ... Outer wall, 2A ... Underground continuous wall, 3 ... Central storage space, 4 ... Cylindrical partition, 5 ... Outer storage space, 6 ... Radial partition , 7 ... bottom plate, G ... ground, P ... underground parking lot.

Claims (2)

[Claims] 1. A structure for a structure of an underground parking lot constructed in the lower ground of a building, wherein the structure has a cylindrical outer wall having a substantially circular cross section, and is located at the axial center of the outer wall, and is centered inside. A cylindrical partition wall that forms a partial storage space, and a radial partition wall that radially extends from the cylindrical partition wall toward the outer wall and divides the space formed on the outer peripheral portion of the cylindrical partition wall into a plurality of outer peripheral part storage spaces. The structure of the structure of the underground parking lot, which has ,. 2. A method for constructing a skeleton for an underground parking lot according to claim 1, wherein the underground continuous wall is formed into a substantially circular cylindrical shape in the ground, and the underground continuous wall is surrounded by the underground continuous wall. It has the process of excavating the ground, and the process of forming the cylindrical partition wall and radial partition wall of Claim 1 integrally with the said underground continuous wall in the excavation hole formed by the said process. How to build the structure of an underground parking lot.