JP2008007954A - Parking lot - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a parking lot such as a self-propelled multistory parking lot, and an elevator-based multistory parking lot, which is improved in floor slab and has a reduced floor height. <P>SOLUTION: According to the structure of the parking lot, flat post-tensioned prestressed concrete beams are arranged between supports which are arranged in one direction on the floor slab of a reference story to bear the load of a periphery and vehicle casing grids, and the floor slabs made of the post-tensioned prestressed concrete are formed between the flat beams in a direction orthogonal to the flat beams. Further an earthquake resistant wall is erected on the floor slab between the supports arranged in the vehicle casing grid, and a wall beam for preventing vehicles from falling is erected on the floor slab on a peripheral portion. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a parking lot that improves a floor structure and reduces a floor height in a parking lot such as a self-propelled multilevel parking lot or an elevator type multilevel parking lot.

In a conventional parking lot, the floor structure is made of reinforced concrete to form a roadway having a pair of U-turn curves, and a number of vehicle compartment grids are formed on both sides of the roadway.
As shown in FIG. 4, the general floor structure of a parking lot is composed of upright columns 15 and outer beams 16 installed between the columns, and is surrounded by the columns 15 and the outer beams 16. It is configured in a lattice box shape by a large number of middle pillars 17 erected in the section and a number of large beams 18 constructed between the pillars 15 and the middle pillars 17 or between the middle pillars 17.
(See Patent Document 1)
Since the outer beam 16 and the large beam 18 are stretched by the PC steel material 19 for the beam so as to withstand the maximum required stress as shown in FIG. 5, each beam has a beam of 800 to 1000 mm. As a result, the height of the floor was as large as 3100-3300 mm.

In order to lower these floor heights, a prestressed concrete beam method and a flat slab method have been studied.
However, as the function of the parking lot, since the roadway requires a wider space than the vehicle compartment grid, the arrangement of the middle pillars 17 is not illustrated because the arrangement of the middle pillars 17 is not uniform and the direction is illustrated. In the prestressed concrete beam method, it is essential to place the PC steel material 19 in order to cope with a large stress by making the beam between the columns long. It is impossible to reduce the beam formation for securing, and in the flat slab method, even if the distance between the columns is uniform, it is efficient, but in reality it is uneven. In order to arrange PC steel materials in a thin slab 20 in an intersecting manner, there are six steps when combined with the upper and lower ends of the rebar in the beam part, so the height difference of the PC steel materials is secured. become unable Therefore, it was necessary to increase the beam formation and at the same time to make the slab 20 thick.
Therefore, the prestressed concrete beam construction method and the flat slab construction method that have been studied have not been adopted because they are uneconomical.
Japanese Patent No. 3119635

  An object of the present invention is to provide a parking lot that improves floor slabs and reduces floor height in parking lots such as self-propelled multilevel parking lots and elevator type multilevel parking lots.

A first parking lot according to the present invention is a parking lot configured by supporting a floor slab on which a roadway and a cabin grid are formed by a support arranged on the outer circumference of the parking lot and the cabin grid, A flat post-tensioned prestressed concrete beam is installed between the outer periphery of the floor slab and the column that supports the cabin grid in one direction, and the post-tensioned prestressed It is characterized by comprising a floor slab made of concrete between flat beams.
The second parking lot according to the present invention is characterized in that a seismic wall is provided on the floor slab between the columns arranged in the vehicle compartment grid in the first parking lot.
A third parking lot according to the present invention is characterized in that a wall beam for preventing a vehicle from falling is raised on a floor slab at an outer peripheral portion in the first and second parking lots.

In the first parking lot according to the present invention, a flat post-tension type press rest / concrete beam is provided between columns arranged in one direction to support the outer periphery and the cabin grid in the floor slab of the standard floor. The floor slab made of pre-stressed concrete with post tension in the direction perpendicular to the beam is constructed between the flat beams, so the floor height of the floor slab is reduced while reducing the beam formation and floor slab thickness to reduce the floor slab weight. In addition to lowering the height of the entire building, the movement of the car between the upper and lower floors is made more efficient and the height of the building is also met.

In the second parking lot according to the present invention, in addition to the first parking lot, a seismic wall is provided on the floor slab between the columns arranged in the passenger compartment grid, and the seismic wall is installed only in the internal space. Therefore, in addition to the above-described effects, the outer periphery of the parking lot is opened to ensure a bright space and energy saving by natural ventilation is also achieved.

In the third parking lot according to the present invention, in addition to the above-described first and second parking lots, a wall beam for preventing the vehicle from falling is set up on the floor slab on the outer peripheral portion. Opening the outer periphery of the parking lot has the effect of eliminating the closed state in the parking lot and giving the passengers an open feeling.

The parking lot according to the present invention is basically a parking lot configured by supporting a floor slab in which a roadway and a cabin grid are formed by a support arranged on the outer circumference of the parking lot and the cabin grid. A flat post-tensioned prestressed concrete beam is installed between the pillars arranged in one direction to support the outer periphery and the cabin grid on the floor slab of the floor, and the post-tensioned prestressed concrete is perpendicular to the flat beam. The floor slab consisting of is composed between flat beams.

The parking lot by this invention is demonstrated based on FIGS.
As shown in FIG. 1, the reference floor of the parking lot 1 is formed on a floor slab 5 with a roadway 2 and an outer compartment grid 3 and an inner compartment grid 4 arranged on both sides of the roadway 2. The floor slab 5 is supported by a group of columns 7 disposed on the outer periphery 6 of the parking lot, a group of columns 8 disposed on the outer compartment grid 3 and a group of columns 9 disposed on the inner compartment grid 4. ing.

The floor slab 5 includes a support 7 arranged on the outer periphery 6, a support 8 arranged on the outer compartment grid 3, and a support 9 arranged on the inner compartment grid 4 in a straight line in the left-right direction in the figure. The beam 10 is formed and a slab 11 formed between the beams 10 in the vertical direction shown in the figure in a state of intersecting with the beam 10.
As shown in FIG. 1 and FIG. 2 as a cross-sectional view in the direction of arrow II, each beam 10 includes a support column 7 arranged on the outer periphery 6, a support column 8 arranged on the outer compartment grid 3, and an inner vehicle. Even if it is uneven, the support | pillar 9 arrange | positioned at the chamber grid 4 is supported in the form arrange | positioned at a narrow space | interval at linear form. Since the stress of the beam 10 borne between the columns is reduced by this arrangement state, the beam 10 has a thin cross-sectional thickness as a flat beam with reduced beam formation. It is configured in the form.
The slab 11 is formed between the beams 10 and constitutes the floor slab 5. The slab 11 has a small stress value that needs to be borne because the distance between the support points regulated in the vertical direction in FIG. 1 is reduced by forming the beam 10 as a flat beam widely. Therefore, the cross-sectional thickness is configured to be thin.

The relationship between the flat beam 10 and the slab 11 as described above is configured as shown in FIG. 3 which is a cross-sectional view indicated by arrows II-II in FIG.
The beam 10 is configured as a prestressed concrete beam by placing a PC steel material 12 in the center as shown in the figure. The column 10 is disposed on the outer periphery 6 to be supported, and the column 8 is disposed on the outer passenger compartment grid 3. Since the support columns 9 arranged in the inner casing grid 4 are arranged in a straight line, even if the spacing between the support columns is uneven, it is possible to reduce the supporting stress. It is configured in a small flat form. On the other hand, the slab 11 is configured by a one-way slab in one direction orthogonal to the direction in which the beam 10 is supported. The slab 11 is a flat beam in which the beam width is reduced and the beam width is increased. Since it is comprised, the space | interval K by which the beam 10 used as the support fulcrum of the slab 11 is arrange | positioned is comprised narrowly.

Accordingly, since the stress imposed on the slab 11 can be reduced, the PC steel material wired in the slab 11 can be reduced by reducing the thickness of the slab 11 to reduce its own weight. The PC steel material wired in the slab 11 can always be arranged on the upper stage of the PC steel material 12 arranged on the beam 10 even in the crossing state with the beam 10. It is possible.
As a result, the arrangement of the PC steel material is separated between the beam 10 and the slab 11, and the crossing of the PC steel material in a thin slab as in the conventional flat slab method is also eliminated. Therefore, since the thickness of the slab 11 can be reduced in this respect, the weight reduction of the slab 11 is further promoted, and the above-described effect of reducing the PC steel material is further accelerated.

As described above, the columns 7 disposed on the outer periphery 6, the columns 8 disposed on the outer casing grid 3, and the columns 9 disposed on the inner casing grid 4 are arranged in a straight line as much as possible. Thus, even if the spacing between the columns is not uniform, the stress sharing that is borne is made substantially uniform while reducing the overall structure by reducing the beam formation of the beam 10 and expanding the beam width. By flattening and distributing the space between the beams small and separating the PC steel material introduced into the interior from the PC steel material wired to the beam 10, the slab 11 formed between the beams is formed thin to reduce its own weight. Reducing the floor height of the floor slab 5 makes the moving gradient between the upper and lower floors gentle in the parking lot, facilitates the driving of the car, and shortens the movement path between the upper and lower floors, so that the parking lot is easy to use. With Easily it can cope with height limit of the object.

In the parking lot according to the present invention, the earthquake resistant wall is provided only in the internal space by providing the earthquake resistant wall on the floor slab between the columns arranged in the vehicle compartment grid.
As shown in FIGS. 1 and 2, the parking lot 1 is provided with a seismic wall 13 between a support column 7 disposed on the outer periphery 6 and a support column 8 disposed on the outer casing grid 3 and is disposed on the inner casing grid 4. The seismic walls 13 and 14 are also provided between the supporting columns 9 and 9.
As a result, the outer periphery 6 of the parking lot 1 is formed in an open state, so that the interior of the parking lot is in a state where a bright space can be secured and a ventilation state is formed by natural ventilation. It will improve.

In the parking lot according to the present invention, a wall beam for preventing the vehicle from falling is raised on the floor slab at the outer peripheral portion, and the closed state in the parking lot is eliminated by opening the outer peripheral portion of the parking lot.
As shown in the cross-sectional view of FIG. 2, the parking lot 1 is provided with a wall beam 15 on the floor slab 5 on the outer periphery 6 to prevent the vehicle from falling and open above the wall beam 15. The person who parks in the parking lot 1 is given a feeling of opening.

The present invention reduces the height of the floor by improving the floor structure in a parking lot such as a self-propelled multilevel parking lot or an elevator type multilevel parking lot, thereby reducing the gradient of the upper and lower floor movement paths, It is related with the parking lot which can respond to the height restriction | limiting of a building while shortening, making a movement of a vehicle easy.

Reference floor map of a parking lot according to the present invention Cross section of a parking lot according to the present invention Cross section of flat beam and slab Standard floor plan in conventional parking lot Cross section of beams and slabs in a conventional parking lot

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Parking lot, 2 ... Roadway, 3 ... Outer compartment grid, 4 ... Inner compartment grid, 5 ... Floor slab, 6 ... Outer circumference of parking lot, 7 ... Post arranged in outer circumference, 8 ... Outer compartment grid 9 ... Columns arranged in the inner compartment grid, ... 10 ... Beam, 11 ... Slab, 12 ... PC steel, 13, 14 ... Earthquake resistant wall, 15 ... Column, 16 ... Outer beam, 17 ... Middle column , 18 ... Large beam, 19 ... PC steel for beam, 20 ... Slab

Claims (3)

It is a parking lot configured by supporting a floor slab on which a roadway and a cabin grid are formed by a support arranged on the outer circumference of the parking lot and the cabin grid. The floor slab on the reference floor has an outer circumference and a cabin grid. A flat post-tensioned prestressed concrete beam is provided between the supporting columns arranged in one direction, and a floor slab made of post-stressed prestressed concrete is formed between the flat beams in a direction perpendicular to the flat beam. A parking lot characterized by that. The parking lot according to claim 1, wherein a seismic wall is provided on a floor slab between columns arranged in a vehicle compartment grid. The parking lot according to claim 1 or 2, wherein a wall beam for preventing the vehicle from falling is raised on a floor slab of the outer periphery.

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