JP7330118B2 - CONSTRUCTION METHOD FOR BUILDING HAVING RC FRAME - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a method of constructing a building having an RC frame, and more particularly, to a method of constructing a building that allows interior parts to be prepared in advance as interior units to simplify on-site interior construction.

In recent years, when constructing a building used for a hotel or an apartment complex, the building is divided into multiple units (building units) that are pre-manufactured at a factory, and these building units are assembled at the construction site to shorten the construction period. A unit construction method that can shorten the time is being implemented. As such a unit construction method, a building unit on each floor has columns made of steel pipes, floor beams and ceiling beams made of H-shaped steel, and the circumference of the floor beams and ceiling beams is covered in advance with a fireproof coating material. There is a well-known method that eliminates the covering work of steel beams at construction sites (Patent Document 1).

In addition, as a building construction method that shortens the construction period and allows each living area to be moved, the building is divided into independent parallel frame wall structures consisting of columns and beams, and blocks of the living area ( Infill), and after assembling the frame of the beam-column part, the previously manufactured living part frame is put into the storage space in the frame of the beam-column part along the beams of the frame of the beam-column part ( Patent document 2). In this construction method, the pillars of the building are made of concrete or steel, and the beams are truss beams having a triangular cross section and having three steel pipe main members (chord members). Two main pipes placed on the upper part are attached so as to sandwich the pillar and are used as rails, making it possible to move the living part frame along the beam.

Japanese Patent No. 4553649 JP-A-11-229497

However, the construction method described in Patent Document 1 is intended for steel-framed buildings. Therefore, even if the building unit has a structure in which pillars and beams are integrally provided, the weight of the building unit can be lifted by a lifting machine. On the other hand, if a building unit with this structure is applied to construct a building of RC structure, the weight of the building unit becomes too heavy, and there is a possibility that the building unit cannot be lifted by a lifting machine.

In addition, in the construction method described in Patent Document 2, the column-to-beam section frame parallel frame walls are only connected by the living section frame in the wall thickness direction. Therefore, the seismic performance of the building cannot be ensured. In addition, the housing frame cannot be made larger than the width between the pillars. As a result, a large dead space is generated between the living part skeletons, and the area ratio of the living part to the building becomes small.

In view of such a background, it is an object of the present invention to provide a building construction method that can shorten the construction period, secure the seismic performance of the building, and suppress the occurrence of dead space.

In order to solve such problems, an embodiment of the present invention is a method for constructing a building (1) having an RC frame (2), each of which is made of PCa concrete, A plurality of outer peripheral column members (16A) arranged, a plurality of internal column members (16B) arranged inside the frame, a plurality of first beam members (17 (17A, 17B)) extending in the girder direction, a step of preparing a plurality of second beam members (19 (19A, 19B)) extending in the inter-beam direction; and a plurality of interior units (12) arranged inside the frame and defining a room (6). a step of arranging a plurality of the outer peripheral column members along the girder direction on the outer peripheral portion of the skeleton (FIG. 4A); and a pair of the outer peripheral column members adjacent to each other. A step of connecting with a first beam member and constructing an outer peripheral frame part (18) on the outer peripheral part of the skeleton (Fig. 4(B)); ) is arranged on the constructed portion of the skeleton so as to enter the inside of the outer frame (FIGS. 5(D) to (F)), and a plurality of arranging the internal column members (FIG. 6(G)), and placing each pair of the outer peripheral column member and the internal column member adjacent to each other in the inter-beam direction above at least one of the interior units a step of connecting with the second beam member (FIG. 6(H)); and the first beam member arranging a pair of the inner column members adjacent to each other in the girder direction above at least one of the interior units. (FIG. 6(I)).

According to this configuration, since the building frame is made of RC, the earthquake resistance performance of the building can be easily ensured. In addition, since the outer pillar member, the inner pillar member, the first beam member and the second beam member are made of PCa concrete, it is possible to shorten the construction period for constructing the frame. Since the interior portion of the building is composed of interior units prepared in advance, it is possible to shorten the construction period for the construction of the interior. Furthermore, since the interior unit is arranged such that one end of the interior unit enters the inside of the outer peripheral frame, the inside of the outer peripheral frame can be used as a chamber.

Preferably, the method further comprises the step of attaching an outer wall (9) along the outer surface of the outer frame (Fig. 4(C)) before arranging the at least one interior unit.

According to this configuration, since the outer wall is attached without the interior unit being arranged, the outer wall can be attached even if there is no scaffolding outside the outer peripheral frame portion. Therefore, there is no need to assemble and dismantle scaffolding, and the construction period can be further shortened.

Preferably, the step of constructing a slab (5) (Fig. 7(J)) is further provided before arranging the perimeter pillar members, and the step of arranging at least one of the interior units comprises at least It is preferable to arrange one interior unit.

According to this configuration, since the slab is constructed without the interior unit, the construction work is easy. In addition, since the interior unit can be arranged on the slab, the work of arranging the interior unit is easy.

Preferably, at least one interior unit is located between a pair of first beam members (17) adjacent to each other in the inter-beam direction and a pair of second beam members (19) adjacent to each other in the girder direction. A bulging portion (20) that bulges upward from the lower surfaces of the pair of first beam members and the lower surfaces of the pair of second beam members may be provided between them.

According to this configuration, the bulging portion expands the chamber upward, further suppressing the occurrence of dead space. In addition, since the bulging portion is surrounded by the pair of first beam members and the pair of second beam members, the interior unit is not largely displaced in the horizontal direction. In addition, after the interior unit is placed on the frame, the outer perimeter pillar member and the interior pillar member are connected by the second beam member, and the pair of interior pillar members are connected by the first beam member, so the interior unit bulges out. It is possible to arrange the interior unit even if it has a part.

Preferably, a plurality of the interior units arranged in the girder direction are arranged between a pair of the outer peripheral column members adjacent to each other.

According to this configuration, the space between the outer peripheral pillar members can be increased without being restricted by the size of the interior unit, and the frame can have a rational structure that facilitates transportation and assembly of the PCa concrete members. can cut

Preferably, a plurality of said interior units are connected to each other and cooperate to define one said room.

With this arrangement, it is possible to form a room larger than the size of the interior unit, which is limited for transportation.

As described above, according to the present invention, it is possible to provide a building construction method that can shorten the construction period, ensure the seismic performance of the building, and suppress the occurrence of dead space.

Plan view of the building according to the embodiment A perspective view of the building under construction Perspective view of building interior unit Explanatory drawing of building construction procedure Explanatory drawing of building construction procedure Explanatory drawing of building construction procedure Explanatory drawing of building construction procedure A side view of the building to explain the procedure for arranging the interior units

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view of a building 1 according to an embodiment. As shown in FIG. 1, a building 1 is a multi-layered building having a frame 2 of RC frame structure. The frame 2 includes a plurality of columns 3 (3A, 3B), a plurality of beams 4 (4A, 4B, see FIG. 2) rigidly connected to the columns 3, and a slab 5 supported by the beams 4. . The building 1 is used as a hotel, dormitory, office, housing complex, and the like. The building 1 consists of a private part consisting of multiple spaces (hereinafter referred to as rooms 6) used as guest rooms, rooms, and dwelling units, etc., and a common part consisting of common spaces such as corridors 7, internal stairs, elevators, and entrances. demarcated.

The building 1 of this embodiment has a plate-like shape in which a plurality of rooms 6 are arranged in the row direction. In other embodiments, the building 1 may be a flying geese building or a tower building. A plurality of rooms 6 are arranged on both sides of a corridor 7 so as to face the corridor 7. - 特許庁A corridor 7 is an internal corridor provided inside the building 1 . Interior floor materials such as carpets and floor mats are laid on the slab 5 of the corridor 7. - 特許庁The pillars 3 are arranged in four rows in the inter-beam direction, and in a plurality of rows in the girder direction at equal intervals. Between the pillars 3 adjacent to each other in the girder direction, two chambers 6 arranged in the girder direction are arranged so as to face each other with a corridor 7 interposed therebetween. Each chamber 6 has a substantially rectangular shape elongated in the inter-beam direction in a plan view, and the two chambers 6 arranged in the girder direction have a line-symmetrical shape. In other embodiments, one, three or more chambers 6 may be arranged between pillars 3 adjacent to each other in the girder direction. Also, the rooms 6 may be arranged only on one side of the corridor 7 . In this case, the corridor 7 may be an exterior corridor with open sides.

The plurality of pillars 3 includes a pillar 3 arranged in the outer peripheral portion of the building 1 in the span direction (hereinafter referred to as an outer pillar 3A) and a pillar 3 arranged in the building 1 in the span direction (hereinafter referred to as an internal pillar 3B). ) and 3 A of outer periphery columns are made into the cross-sectional shape of a substantially square. The internal pillar 3B has a substantially rectangular cross-sectional shape in which the dimension in the inter-beam direction is larger than the dimension in the girder direction. In this embodiment, the internal pillars 3B are located on both sides of the corridor 7 and away from the corridor 7, that is, in the middle of the room 6 in the longitudinal direction. In other embodiments, the internal pillars 3B may be arranged adjacent to the corridor 7 or projecting into the corridor 7 . In the case of the building 1 in which the rooms 6 are arranged only on one side of the corridor 7, the outer peripheral pillars 3A are arranged in a line only on the outer peripheral portion of the building 1 on the room 6 side. In this case, the internal pillars 3B are preferably arranged in at least one row so as to include a row arranged in the vicinity of the boundary between the room 6 and the corridor 7.

The openings between each pair of peripheral pillars 3A arranged adjacent to each other in the girder direction are closed by RC outer walls 9 having window openings 8 formed therein. The outer wall 9 also closes the opening between the pillars 3 arranged at the ends in the girder direction (the girder of the building 1). An emergency door 10 is provided at a portion facing the corridor 7 of the outer wall 9 provided between the pair of internal pillars 3B, and an external staircase 11 is provided outside the emergency door 10.例文帳に追加The outer staircase 11 may be of steel construction.

Each room 6 is demarcated by an interior unit 12 in which interior parts such as a unit bath 14, an entrance door 15, an interior board, piping, and wiring are integrally formed in advance at the factory. The interior unit 12 is transported from the factory to the construction site of the building 1 by a trailer. Therefore, the size (especially width and height) of the interior unit 12 is set so that the size of the trailer, including the on-vehicle items, is permitted by the Road Traffic Act (width 2.99 m, 15.91m in length and 4.1m in height). On the corridor 7 side of the room 6, a PS 13 (pipe space) and a toilet-integrated unit bath 14 are provided in this order along the longitudinal direction. It is a passage leading to the room part such as the room.

In other embodiments, a plurality of interior units 12 arranged in the row direction may cooperate to define one chamber 6 . In this case, at least one interior unit 12 may be provided with the entrance door 15 . Two interior units 12 adjacent to each other in the row direction are connected to each other so that people can come and go through at least one pair of openings provided at positions facing each other. The opening may or may not be provided with a door. By connecting a plurality of interior units 12 to each other in this way and cooperating to define one chamber 6, it is possible to form a chamber 6 that is larger than the dimensions of the interior units 12 that are restricted for transportation. is.

In order to increase the planar area of the chamber 6, each interior unit 12 has an outer contour along the outer wall 9 and adjacent interior units 12, and the portions corresponding to the outer pillars 3A and the inner pillars 3B of the interior unit 12 have is formed into a columnar shape protruding into the chamber 6 . The column shape of the outer peripheral column 3A is formed at the corner of the chamber 6. As shown in FIG. On the other hand, the columnar shape of the internal column 3B is formed in the intermediate portion of one side surface of the chamber 6 because the internal column 3B is arranged in the intermediate portion in the longitudinal direction of the chamber 6 . In this embodiment, spaces are provided between the interior units 12 adjacent to each other in the row direction. However, a soundproof member may be provided between the interior units 12 adjacent to each other in the row direction. A wall made of RC may be provided between the interior units 12 adjacent to each other in the girder direction with the internal pillar 3B interposed therebetween.

FIG. 2 is a perspective view of the essential parts of the building 1 under construction. As shown in FIG. 2, each pair of peripheral pillars 3A that are adjacent to each other in the girder direction are connected to each other by first beams 4A that extend in the girder direction. Each pair of inner columns 3B adjacent to each other in the girder direction are also connected to each other by first beams 4A extending in the girder direction. Each pair of the outer pillar 3A and the inner pillar 3B adjacent to each other in the inter-beam direction is connected to each other by a second beam 4B extending in the inter-beam direction. Each pair of internal columns 3B (only one is shown in FIG. 2) adjacent to each other in the inter-beam direction are also connected to each other by second beams 4B extending in the inter-beam direction.

In this embodiment, the outer pillar 3A is configured by vertically connecting a plurality of outer pillar members 16A made of PCa concrete and having a length substantially equal to the height of the first floor. The internal pillar 3B is constructed by vertically connecting a plurality of internal pillar members 16B made of PCa concrete and having a length substantially equal to the height of one story. Here, "substantially the same" means including a degree of difference by the thickness of the joint.

The first beam 4A connecting each pair of the outer peripheral columns 3A is composed of a first outer peripheral beam member 17A made of PCa concrete and having substantially the same length as the interval between the outer peripheral columns 3A. A pair of outer peripheral column members 16A adjacent to each other and a first outer peripheral beam member 17A connecting them form a gate-shaped outer peripheral frame portion 18 on the outer peripheral portion of the frame 2 . The first beams 4A connecting each pair of internal pillars 3B are composed of first internal beam members 17B made of PCa concrete and having a length substantially equal to the interval between the internal pillars 3B.

A second beam 4B connecting the outer pillar 3A and the inner pillar 3B is composed of a second outer beam member 19A made of PCa concrete and having substantially the same length as the interval between the outer pillar 3A and the inner pillar 3B. The second beam 4B connecting the internal pillars 3B is composed of a second inner beam member 19B made of PCa concrete and having substantially the same length as the interval between the internal pillars 3B.

In another embodiment, both the outer pillar 3A and the inner pillar 3B may be composed of one pillar member and a joint member made of PCa concrete. Also, the first beam 4A and the second beam 4B may be composed of one beam member and beam portions of two joint members provided on both sides thereof. Furthermore, the first beam member 17 (17A, 17B) may be composed only of beam portions of two joint members.

These PCa concrete members are prefabricated in a factory, transported to a construction site by a trailer, and assembled at the construction site. The PCa concrete members are connected to each other by splicing reinforcing bars (not shown) protruding from one member to mechanical joints (not shown) provided on the other member. Another PCa concrete member with rebar through-holes may be placed between two PCa concrete members. The connection between the PCa concrete members is not limited to this construction method, and may be performed by other known construction methods.

As noted above, the width of interior unit 12 is limited for transportation. On the other hand, by arranging a plurality of interior units 12 between each pair of outer peripheral column members 16A arranged adjacent to each other in the girder direction, the interval between the outer peripheral column members 16A is not limited by the size of the inner unit 12. It is possible to make it larger. As a result, the frame 2 can have a rational structure that facilitates transportation and assembly of the PCa concrete members.

FIG. 3 is a perspective view of the interior unit 12 of the building 1. FIG. As shown in FIGS. 2 and 3, the interior unit 12 has a substantially rectangular parallelepiped shape. A bulging portion 20 that bulges upward from the lower surface of the second beam 4B is provided. In this embodiment, one bulging portion 20 is provided in the room portion on the other end side opposite to the entrance door 15 of the interior unit 12 .

The bulging portion 20 is located at a position avoiding the first beam 4A and the second beam 4B, that is, between a pair of first beam members 17 adjacent to each other in the inter-beam direction and a pair of second beam members 17 adjacent to each other in the girder direction. It is positioned between the beam members 19 (more specifically, the second outer beam member 19A). Two sides (upper portions of one end portion 12a and one side portion 12b) of the bulging portion 20 corresponding to the first beam 4A and the second beam 4B are formed with a beam shape projecting into the room portion of the chamber 6. As shown in FIG.

A beam shape is not formed in a portion of the interior unit 12 on the side of the entrance door 15 where the bulging portion 20 is not provided (hereinafter referred to as a general portion 21). The bulging portion 20 forms a top surface that is higher than the top surface of the general portion 21 . In other words, the upper surface of the interior unit 12 consists of the first upper surface 20a of the bulging portion 20 positioned at one end in the longitudinal direction and the general portion 21 positioned at the other end in the longitudinal direction and lower than the first upper surface 20a. and a second upper surface 21a.

By providing the interior unit 12 with the bulging portion 20 in this way, the chamber 6 is expanded upward, and the occurrence of dead space above the chamber 6 is suppressed. Moreover, since the bulging portion 20 is surrounded by the pair of first beam members 17 and the pair of second beam members 19, the interior unit 12 is not largely displaced in the horizontal direction.

The interior unit 12 includes a frame 22 arranged at the lower end, a three-dimensional frame 23 assembled on the frame 22, and an interior board or the like arranged inside the frame 23 and assembled to the frame 23. interior material 24. The frame 22 is made of steel having higher rigidity than the frame body 23, such as H-shaped steel, I-shaped steel, and channels. By attaching a jig to a support portion formed on the frame 22, the interior unit 12 can be lifted by a lifting machine. The frame body 23 is made of a steel material having a lower rigidity and a lighter weight than the frame 22, such as a square pipe 25 or LGS 26 (Light Gage Steel). Each rectangular surface of the frame 23 has at least four sides formed by square pipes 25, and at least one square pipe 25 is formed so that when the interval between the square pipes 25 is equal to or greater than a predetermined value, the interval is equal to or less than a predetermined value. LGS 26 is arranged. An opening 27 is formed in a side surface of one end 12 a of the interior unit 12 at a position aligned with the window opening 8 of the outer wall 9 .

In addition, in FIG. 3, only LGS26 arrange|positioned at one surface is shown, LGS26 arrange|positioned at the other surface is abbreviate|omitted. The LGS 26 is provided not only on the sides of the frame 23 but also on the top. The LGS 26 and the interior material 24 may not be provided in the portion where the unit bath 14 is provided. An inspection opening 28 that can be opened and closed by an inspection door is formed on the upper surface of the unit bath 14 . Electrical wiring and water supply piping (not shown) are placed on the upper surface of the interior unit 12 . A not-shown sewage pipe (not shown) is accommodated in the lower portion of the interior unit 12 , specifically, in the inner space of the frame 22 .

The building 1 is configured as described above. Since the frame 2 of the building 1 is made of RC as described above, the earthquake resistance performance of the building 1 can be easily ensured.

Next, a construction method of the building 1 configured in this way will be described with reference to FIGS. 4 to 8. FIG. FIGS. 4 to 7 (A) to (J) are perspective views showing a simplified main part of the building 1 in order to explain the construction procedure of the building 1, and FIG. FIG. 5 is a side view showing a simplified main part of the building 1 for explaining the procedure (FIGS. 5(D) to 5(F)). 5(D) to 7(J), the exterior wall 9 attached in FIG. 4(C) is omitted for the sake of easy understanding of the interior of the building 1.

In the following, a procedure for constructing a first floor of blocks including a pair of pillars 3 adjacent to each other in the direction of the girders on one side of the corridor 7 in the building 1 will be described. The construction procedure for other blocks and other floors of the building 1 is the same.

As shown in FIG. 4A, on the constructed slab 5 (on the foundation slab in the case of the lowest floor), a pair of outer peripheral column members 16A prepared in advance are attached to the outer periphery of the frame 2 in the girder direction. and connected to the outer perimeter pillar member 16A (not shown, foundation footing for the lowest floor) on the lower floor. Next, as shown in FIG. 4B, a pair of adjacent outer peripheral column members 16A are connected by a first outer peripheral beam member 17A prepared in advance, and an outer peripheral frame portion 18 is constructed on the outer peripheral portion of the frame 2. do. In the work shown in FIGS. 4A and 4B, first, one outer peripheral column member 16A is placed, then the first outer peripheral beam member 17A is placed at a predetermined position, and then the other outer peripheral column member 16A is placed. A procedure of placing and connecting these members may be performed.

Next, as shown in FIG. 4(C), the outer wall 9 is attached along the outer surface of the outer peripheral frame portion 18 . The attachment of the outer wall 9 is performed by attaching an outer wall panel that has been manufactured in advance at a factory and transported to the construction site to the outer surface side of the outer peripheral frame portion 18 . At this time, since the interior unit 12 is not arranged on the inner surface side of the outer frame portion 18 (inside the building 1), the worker can perform the mounting work of the outer wall 9 on the slab 5. In other words, the outer wall 9 can be attached even if there is no scaffold outside the outer frame portion 18 . Therefore, there is no need to assemble and dismantle scaffolding, and the construction period for the building 1 to be constructed can be shortened.

Subsequently, as shown in FIG. 5(D), one of the two interior units 12 prepared in advance is hoisted by a lifting machine and lowered from above the frame 2 under construction as indicated by an arrow. At this time, since the first outer peripheral beam member 17A has already been arranged and the interior unit 12 cannot be hung from directly above the position where it should be arranged, The interior unit 12 is suspended from the . Next, as shown in FIG. 5(E), the interior unit 12 is moved to the outside of the building 1 (on the side of the outer frame portion 18) as indicated by the arrow in the suspended state, and the one end portion 12a of the interior unit 12 is lifted. is placed on the constructed part of the skeleton 2 so that the .

As shown in FIG. 8, the first height H1 of the one end portion 12a of the interior unit 12 is the second height H2 inside the outer peripheral frame portion 18 (from the upper surface of the slab 5 to the lower surface of the first outer peripheral beam member 17A). height). As a result, it is possible to move the interior unit 12 in a suspended state so that the one end portion 12 a enters the inside of the outer frame portion 18 . After being moved to a predetermined position, the interior unit 12 is suspended and placed on the constructed slab 5 . Although not shown, a plurality of pins are fixed to the upper surface of the slab 5 so as to protrude upward. By inserting the pins into positioning holes formed in the lower surface of the frame 22, the interior unit 12 can be Fixed in place. The protrusion dimension of the pin is smaller than the difference between the second height H2 inside the outer peripheral frame portion 18 and the first height H1 of the one end portion 12a of the interior unit 12 .

Subsequently, as shown in FIG. 5(F), the other of the interior units 12 is similarly placed on the constructed part of the skeleton 2 so that the one end 12a enters the inside of the outer frame 18. do. When two interior units 12 cooperate to define one chamber 6, the two interior units 12 are connected to each other.

After that, as shown in FIG. 6(G), a pair of internal column members 16B prepared in advance are arranged inside the frame 2 along the girder direction. Next, as shown in FIG. 6(H), a pair of second outer beam members 19A prepared in advance is arranged above one side portion 12b of the interior unit 12 on the corresponding side. Each pair of the outer peripheral column member 16A and the inner column member 16B adjacent to each other in the inter-beam direction is connected by the second outer beam member 19A. Also, a pair of second inner beam members 19B prepared in advance is arranged at a predetermined position, and each pair of inner column members 16B adjacent to each other in the inter-beam direction (only one of each pair is shown in FIG. 6 and the like). ) are connected by the second inner beam member 19B. In the work shown in FIGS. 6(G) and (H), the second outer beam member 19A is placed first, then the inner column member 16B is placed at a predetermined position, and then the second inner beam member 19B is placed. It may be performed in a procedure to connect these members together.

Next, as shown in FIG. 6(I), two first internal beam members 17B prepared in advance are arranged above the interior unit 12, and a pair of internal column members 16B adjacent to each other in the girder direction are placed as the second members. 1 are connected by an internal beam member 17B. In the work shown in FIGS. 6(G) and (I), one internal column member 16B is placed first, then the first internal beam member 17B is placed at a predetermined position, and then the other internal column member 16B is placed. may be placed to connect these members.

In this way, after the interior unit 12 is arranged on the frame 2 in FIG. 5(F), the outer peripheral column member 16A and the internal column member 16B are connected by the second outer beam member 19A in FIG. 6(H). , FIG. 6(I), a pair of internal column members 16B are connected by a first internal beam member 17B. By taking such a procedure, the interior unit 12 can be arranged even if the interior unit 12 has the bulging portion 20 .

Finally, as shown in FIG. 7(J), the slab 5 is constructed so as to be integrated with the first beam member 17 (17A, 17B) and the second beam member 19 (19A, 19B). The slab 5 may be constructed by joining a PCa concrete floor slab to these beam members, or may be constructed by joining a half-precast floor slab to these beam members and then pouring concrete thereon. . Furthermore, the entire slab 5 may be constructed by placing cast-in-place concrete.

After that, the upper floors of the building 1 are constructed by repeating the procedure from FIG. 4(A). In this way, the slab 5 can be constructed without the interior unit 12 by constructing the slab 5 in FIG. construction work is easy. 5D to 5F, the interior unit 12 can be arranged on the slab 5, so that the interior unit 12 can be easily arranged.

As described above, in the present embodiment, the outer peripheral column member 16A, the internal column member 16B, the first beam members 17 (17A, 17B), and the second beam members 19 (19A, 19B) are made of PCa concrete. The construction period related to the construction of 2 can be shortened. In addition, since the interior portion of the building 1 is composed of the interior units 12 prepared in advance, it is possible to shorten the construction period for the construction of the interior. Furthermore, since the interior unit 12 is arranged so that one end portion 12a of the interior unit 12 enters the inside of the outer peripheral frame portion 18, the inside of the outer peripheral frame portion 18 can be used as the chamber 6, and a dead space is generated. can be suppressed.

Although the specific embodiments have been described above, the present invention is not limited to the above embodiments and can be widely modified. Further, the specific configuration, arrangement, quantity, material, procedure, etc. of each member and portion can be changed as appropriate within the scope of the present invention. On the other hand, not all of the components shown in the above embodiments are essential, and can be selected as appropriate.

1 building 2 framework 3 pillar 3A outer pillar 3B inner pillar 4 beam 4A 1st beam 4B 2nd beam 5 slab 6 room 9 outer wall 12 interior unit 12a one end 16A outer pillar 16B inner pillar 17 first beam 17A first Peripheral beam member 17B First inner beam member 18 Peripheral frame portion 19 Second beam member 19A Second outer beam member 19B Second inner beam member 20 Swelling portion

Claims (6)

A method for constructing a building having an RC frame,
A plurality of outer peripheral column members each made of PCa concrete and arranged on the outer periphery of the building frame, a plurality of internal column members arranged inside the building frame, a plurality of first beam members extending in the girder direction, and preparing a plurality of second beam members extending in the inter-beam direction;
a step of preparing a plurality of interior units that are arranged inside the skeleton and define a room;
arranging a plurality of the outer peripheral column members along the girder direction on the outer peripheral portion of the skeleton;
A step of connecting a pair of the outer peripheral column members adjacent to each other by the first beam member and constructing an outer peripheral frame part on the outer peripheral part of the skeleton;
placing at least one interior unit on a pre-constructed portion of the skeleton such that one end of the interior unit enters the interior of the perimeter frame;
arranging a plurality of the internal column members inside the skeleton along the girder direction;
connecting each pair of the outer peripheral column member and the inner column member adjacent to each other in the inter-beam direction by the second beam member arranged above at least one of the interior units;
and connecting a pair of said inner pillar members adjacent to each other in said girder direction by said first beam member arranged above at least one said interior unit. 2. The construction method of claim 1, further comprising attaching an outer wall along the outer surface of the perimeter frame prior to placing the at least one interior unit. further comprising building a slab prior to placing the perimeter post members;
3. The construction method according to claim 1, wherein the step of arranging at least one interior unit includes arranging at least one interior unit on the slab. At least one interior unit is arranged between a pair of first beam members adjacent to each other in the inter-beam direction and between a pair of second beam members adjacent to each other in the girder direction. Construction according to any one of claims 1 to 3, characterized by comprising a bulging portion that bulges upward from the lower surface of each of the first beam members and the lower surface of each of the pair of second beam members. Method. The construction method according to any one of claims 1 to 4, characterized in that a plurality of said interior units arranged in said girder direction are arranged between a pair of said outer peripheral column members adjacent to each other. 6. The construction method according to claim 5, wherein a plurality of said interior units are connected to each other and cooperate to define one said room.

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