JP7368987B2 - Self-propelled multilevel parking lot - Google Patents

Description

The present invention relates to a self-propelled multi-level parking lot having a large space.

In self-propelled multi-story parking garages, rigid frame structures are generally adopted because they can provide a highly user-friendly space and have excellent earthquake resistance due to their high toughness and energy absorption capacity (Patent Document 1) reference).

Furthermore, in recent years, there has been an increasing demand for self-propelled multi-level parking lots with large spaces, and, for example, self-propelled multi-level parking structures with large spaces based on rigid frame structures as shown in FIG. 5 have also been adopted. In order to have such a large space, for example, the cross-sectional size of the pillars in a flat self-propelled multi-level parking lot with 5 layers and 6 tiers is generally square steel pipes such as 500 mm x 500 mm or 550 mm x 550 mm. This satisfies the specified yield strength.

Japanese Unexamined Patent Publication No. 59-170365

However, if you want to create a rigid frame structure with a large space, this can be achieved by reducing the number of pillars inside the self-propelled multi-level parking lot as much as possible. It is necessary to bear the burden. For this purpose, it is necessary to increase the size of the members (pillars and beams) that make up the rigid frame structure, which increases costs and results in an uneconomical self-propelled multi-level parking lot. In addition, in the case of a rigid frame structure, the connection between columns and beams is a rigid connection, which is difficult to make compared to a brace structure, and there is also the problem that this increases the number of processing steps.

The present invention has been made in view of the above circumstances, and its main purpose is to provide a self-propelled multi-level parking lot with a large space at a low cost while reducing the number of processing steps.

According to the present invention, in a self-propelled multi-level parking lot, the central part thereof has a rigid frame structure with a central pillar made of a square steel pipe, and the outer peripheral part has a brace structure with an outer pillar made of H-beam steel. The outer columns arranged in the girder row direction are arranged with the strong axis direction of the outer columns along the inter-beam direction, and the outer columns arranged in the inter-beam direction are arranged with the strong axis direction of the outer columns A self-propelled multi-story parking lot is provided in which parking spaces are arranged along the row direction.

The self-propelled multi-story parking lot according to the present invention is a hybrid self-propelled multi-story parking garage in which the central part has a rigid frame structure with a central pillar made of square steel pipes, and the outer peripheral part has a brace structure with external pillars made of H-beam steel. By doing so, the size of the members can be reduced compared to a self-propelled multi-level parking lot that has a large space due to a rigid frame structure with columns made of conventional rectangular steel pipes. In addition, by forming the outer peripheral part into a brace structure, the outer column and the outer peripheral beam are joined by a pin joint, which is easier to join than a rigid joint, and the number of processing steps can be reduced.

Preferably, in the self-propelled multi-story parking lot, the middle pillar is rigidly connected to a beam.

Preferably, in the self-propelled multi-level parking lot, the connection of the outer columns in the strong axis direction is a rigid connection.

Preferably, in the self-propelled multi-level parking lot, the connection in the weak axis direction of the outer column is a pin connection.

Preferably, in the self-propelled multi-story parking lot, the brace structure includes braces that connect the columns and beams, and a value obtained by dividing the sum of the horizontal bearing strengths of the braces by the numerical value of the horizontal bearing capacity possessed is 0.7 or less. A self-propelled multi-level parking lot will be provided.

Preferably, a self-propelled multi-level parking lot is provided that has a slab in its foundation structure.

According to the present invention, it is possible to reduce the number of processing steps and to provide a self-propelled multi-level parking lot having a large space at low cost.

A plan view of the standard floor of a skip-type self-propelled multi-level parking lot. Main frame structure diagram of a skip-type self-propelled multi-level parking lot as seen from the front. The main frame structure diagram of the skip-type self-propelled multi-level parking lot as seen from the side. A beam layout diagram showing details of the column-beam joint structure of a skip-type self-propelled multi-level parking lot. A floor plan of a conventional flat-type self-propelled multi-level parking lot with a large space. Cross-sectional view of the basic structure.

A preferred embodiment of the self-propelled multilevel parking lot will be specifically described using drawings. In the following, for convenience, a skip-type (flat step-type) self-propelled multi-level parking lot will be described as an example, but it can also be suitably incorporated into other flat types and continuous tilt types. Further, the present invention is not limited to the following embodiments, and changes can be made as appropriate without departing from the scope of achieving the effects of the present invention.

The present invention has developed a self-propelled multi-level parking lot with a large space with fewer pillars compared to conventional parking lots in order to respond to future changes in parking lot operation methods (automated valet parking, etc.) in self-propelled multi-level parking structures. This was developed with the focus on the ability to flexibly respond to future changes.

1. Schematic configuration of self-propelled multi-level parking lot In Section 1, the schematic configuration of the self-propelled multi-level parking lot 1 will be described. Figure 1 is a plan view of the standard floor of a self-propelled, self-propelled, skip-type parking lot, Figure 2 is a main frame structure diagram of the self-propelled, self-propelled, skip-type parking lot as seen from the front, and Figure 3 is a skip-type self-propelled multi-level parking lot as seen from the side. The main frame structure diagrams of the self-propelled multi-level parking lot are shown in each figure.

As shown in FIGS. 1 to 3, a self-propelled multi-level parking lot 1 (hereinafter sometimes referred to as the building 1) consists of a reinforced concrete foundation structure 100 fixed to the GL, and frame members such as columns and beams. It has a frame structure composed of , and an upper structure 101 fixed to a foundation structure 100 .

The building 1 consists of at least one layer and two levels (one story) with a steel frame, and each level is provided with a slope 3 that connects the upper and lower floors so that cars can move up and down them on their own. . Furthermore, each layer is provided with a series of circular roadways 2, and a plurality of parking spaces 4 are provided in rows on both sides of the roadways 2. In addition, in the building 1, the longitudinal direction is hereinafter referred to as the column direction, and the transversal direction is referred to as the inter-beam direction.

2. Column/Beam Connection Structure of Building 1 In Section 2, the column/beam connection structure of Building 1 will be explained. FIG. 4 is a beam layout diagram showing details of the column-beam joint structure of a skip-type self-propelled multi-level parking lot.

As shown in FIG. 4, the central part of the building 1 has a rigid frame structure including a central column 10 made of square steel pipes, while the outer peripheral part has a brace structure including outer columns 20 and 21 made of H-beam steel. In addition, in FIG. 4, in order to visually understand the connections at both ends of each beam, the solid black area represents a rigid joint structure, and the cross hatching represents a brace structure using pin connections. That is, the middle column 10 is rigidly connected to the beams 30 and 34, and the outer column 20 is rigidly connected in the strong axis direction.

Further, the gaps provided between the outer column 20 and the beam 31, between the outer column 21 and the beams 32 and 33, or between the beams 33 and 30 indicate pin joint locations. That is, the connection between the outer columns 20 and 21 in the weak axis direction is a pin connection.

Returning to FIGS. 1 to 3, four square steel pipe braces 60 are provided between the outer columns 20, 20 in the column direction at the outer periphery. Similarly, one brace 61 made of a square steel pipe is provided between the outer columns 21 and 21 in the direction between the beams at the outer periphery. Note that the number of braces 60, 61 may be determined as appropriate depending on the size of the parking lot, etc., and it is sufficient that the number of braces is at least one.

Further, the plurality of outer columns 20 arranged in the column direction are arranged with their respective strong axes along the inter-beam direction. In other words, the H-section steel is composed of a web and a flange, and is arranged so that the surface side of the flange faces the center of the building 1.

Similarly, the plurality of outer columns 21 arranged in the inter-beam direction are arranged with their respective strong axes along the column direction. In other words, the surface side of the flange is arranged to face the center of the building 1, as described above.

In this way, by making the building 1 a hybrid building 1 in which the central part of the building 1 has a rigid frame structure with the middle pillar 10 made of square steel pipes, and the outer peripheral part has a brace structure with the outer pillars 20 and 21 made of H-beam steel. , it is possible to effectively utilize the internal space of the building 1, and furthermore, it is possible to have a structure that can efficiently bear the horizontal force on the building 1.

Therefore, compared to a self-propelled multi-level parking lot that has a large space due to the rigid frame structure consisting of pillars made of square steel pipes, the size of the constituent members (columns and beams) can be made smaller, making it more economical. It can be turned into a self-propelled multi-storey parking lot.
Furthermore, by forming the outer peripheral portion into a brace structure, the beams and the outer pillars 20, 21 are joined by a pin joint, which is easier to join than a rigid joint, and the total number of processing steps can be reduced.

3. Horizontal load-bearing structure Section 3 explains horizontal load-bearing structure.
The building 1 of the present invention has been carefully designed to have a structure that has horizontal strength. In other words, in the building 1 of the present invention, the value obtained by dividing the sum of the horizontal strength of the braces 60 and 61 by the numerical value of the possessing horizontal strength is 0.7 or less.

Here, the "sum of horizontal strength" of the braces 60, 61 refers to the sum of the horizontal strength of the braces 60, 61 belonging to each layer, and "horizontal strength" means the sum of the horizontal strength of the columns and beams belonging to each layer. It refers to the sum of horizontal forces that occur in the main parts of the structure, such as columns, beams, and braces, when a frame consisting of braces, etc. collapses.

Building 1 ensures safety against large earthquakes by making the energy absorption capacity larger than the seismic input energy, taking into account damping properties, toughness, etc. during an earthquake.
In general, a rigid frame structure has high toughness and high energy absorption capacity, so it has excellent earthquake resistance, but on the other hand, a brace structure has a low energy absorption capacity due to deformation.

In addition, the structural characteristic coefficient used to evaluate the energy absorption capacity used when calculating seismic input energy is that when a hybrid structure of a rigid frame structure and a brace structure is used, the sum of the horizontal bearing capacity of the brace structure is approximately 70% of the horizontal bearing capacity. Above this, the behavior becomes close to that of a pure brace structure.

Therefore, it is necessary to set the value of the structural characteristic coefficient large, but by setting the ratio to approximately 70% or less, the value of the structural characteristic coefficient can be set small. By doing so, the earthquake input energy can be reduced, and the energy absorption capacity of the building 1 can be reduced accordingly.

Therefore, the size of the members constituting the self-propelled multi-level parking lot can be reduced, and the self-propelled multi-level parking lot can be made economical and has improved vibration damping properties and toughness.

4. Basic Structure Section 4 explains the basic structure. FIG. 6 is a sectional view of the foundation structure, and shows one of the outer columns 21 in the inter-beam direction as an example.
As shown in FIG. 6, the foundation structure 100 is located below the upper structure 101 (frame frame) and supports the frame frame.

Specifically, the foundation structure 100 includes a pile body 50, a footing 51, an underground beam 52, and a slab 53, and the outer column 21 is supported by the footing 51 at its lower part. Note that the footing 51, the underground beam 52, and the slab 53 are each made of reinforced concrete.

The pile body 50 has a cylindrical shape and is buried in the ground 56 using a pile driver or the like, and its lower part is fixed to a support layer 55. On the other hand, the upper part is fixed to a footing 51.
That is, the outer pillar 21 is supported by the pile body 50 via the footing 51.

Further, a plurality of anchor bolts 54 protrude from the upper part of the footing 51, and these are respectively inserted into a plurality of holes 57a of a base plate 57 joined to the lower end of the outer column 21, and a nut 54a is attached to each anchor bolt 54. It has a screw number. Thereby, the outer pillar 21 of the building 1 is fixed to the footing 51 of the foundation structure 100.

Further, a slab 53 is formed on the entire surface of the building 1 directly below the GL. In other words, the slab 53 is formed on the entire surface directly below the GL of the building 1 and between the footing 51, the underground beam 52, and the upper surface of the ground 56 so as to further fix the outer columns 20, 21 and the middle column 10. are doing.
As a result, by providing the slab 53 on the entire surface of the foundation structure of the building 1, the horizontal force acting on the lower structure such as the pile body 50 can be dispersed with respect to the horizontal force applied to the outer column at the outer periphery.

(Construction method)
When supporting the building 1 with the foundation structure 100, first, the pile body 50 is driven from the ground 56 to the support layer 55 using a pile driver. Next, reinforcing bars (not shown) are arranged for the footing 51 and the underground beam 52, and concrete is poured. At that time, a plurality of anchor bolts 54 are fixed to the footing 51 with their upper portions protruding. Next, each anchor bolt 54 is fixed to a base plate 57 joined to the lower part of the outer column 21. Next, a slab 53 is formed on the entire floor surface of the building 1 directly under the GL by arranging reinforcement immediately below the GL and pouring concrete over the entire surface.

5. Horizontal force and pulling force In Section 5, the horizontal force and pulling force in the building 1 of the present invention will be explained.
In the present invention, the outer peripheral portion of the building 1 has a brace structure as described above. Therefore, by arranging the braces 60 and 61 on the outer periphery that is farthest from the center of gravity of the building 1, the horizontal force bearing efficiency of the brace structure can be made very high. The pulling force will increase, and there is a risk that it will have a large impact on the substructures such as pile foundations.

In this regard, as shown in Fig. 6, by providing a slab (reinforced concrete) in the foundation structure of the building 1, the horizontal force acting on the lower structure such as the pile body 50 can be reduced. It is dispersed. In this way, conventionally, asphalt is provided on the floor structure of the first floor, but in the present invention, by providing a slab directly below the ground surface GL, the horizontal force acting on the lower structure such as the pile bodies 50 can be dispersed. I paid attention.

In addition, regarding the pull-out force on the outer column 21 at the outer periphery in the beam-to-beam direction, the number of outer columns on the structural surface where a large pull-out force occurs is minimized, and the vertical axis acting on the outer column 21 on the structural surface is reduced as much as possible. By increasing the force, the pulling force acting on the outer column is suppressed as much as possible.
Further, by connecting the outer peripheral portion of the beam 32 and the outer column 21 in the inter-beam direction with a pin connection, the pull-out force due to beam bending stress is suppressed.

5. Conclusion As described above, according to this embodiment, the number of pillars that obstruct parking inside the self-propelled multi-story parking lot is reduced as much as possible, and braces to bear the horizontal force are added to the self-propelled multi-story parking lot. By not disposing it inside the parking lot, it is possible to provide a self-propelled multi-level parking lot having a large space inside the self-propelled multi-level parking lot.

Such a self-propelled multi-story parking lot has a rigid frame structure in which the central part thereof has a central pillar made of a square steel pipe, and the outer peripheral part thereof has an outer pillar made of H-beam steel. The outer columns that have a brace structure and are arranged in the girder direction are arranged with the strong axis direction of the outer columns along the inter-beam direction, and the outer columns that are arranged in the inter-beam direction are The strong axis direction is arranged along the column direction.

1 Self-propelled multi-level parking lot (building)
2 Roadway 3 Slobe 4 Parking space 10 Middle pillar 20, 21 Outer pillar 30-34 Beam 53 Slab 60, 61 Brace

Claims (4)

In the self-propelled multi-storey parking lot,
Its central part is
A central column made of square steel pipe ,
a beam rigidly connected to the center column in the beam-to-beam direction;
a beam rigidly connected to the center column in the girder direction;
It has a Ramen structure consisting of
Its outer periphery is
An outer column made of H-beam steel ,
Beams that are pin-connected to adjacent external columns in the beam-to-beam direction,
Beams that are pin-connected to adjacent external columns in the girder row direction,
A brace provided between at least one set of outer columns adjacent in the beam direction and between at least one set of outer columns adjacent in the column direction;
It has a brace structure consisting of
The outer column arranged in the column direction is arranged with the strong axis direction of the outer column along the inter-beam direction,
The outer column arranged in the inter-beam direction is arranged with the strong axis direction of the outer column along the column direction.
Self-propelled multilevel parking lot. In the self-propelled multi-level parking lot according to claim 1 ,
A self-propelled multi-level parking lot , wherein the outer column is rigidly connected to the beam connected to the middle column in the direction of the strong axis and in the direction between the beams. In the self-propelled multi-level parking lot according to claim 1 or claim 2 ,
A self-propelled multi- level parking lot, wherein a value obtained by dividing the sum of the horizontal strength of the braces by the numerical value of the possessed horizontal strength is 0.7 or less. In the self-propelled multi-level parking lot according to any one of claims 1 to 3 ,
A self-propelled multi-level parking lot with a slab foundation.

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