JP7285202B2 - Frame structures and buildings equipped with them - Google Patents

Description

The present disclosure includes a plurality of columns arranged in a first direction and a second direction, a plurality of first beams constructed between the joints of the columns in the first direction, and between the joints of the columns in the second direction. A frame structure having a plurality of first beam members or connection members made of PCaPC having at least a connection part forming a connection of columns, and this frame structure and a plurality of connection members and a building with interior units.

As a Rahmen structure using precast concrete members, a plurality of through holes are formed in the horizontal direction in the column joint of a precast concrete (hereinafter referred to as PCa concrete) column integrally formed with the column joint. A PCa concrete beam (hereinafter referred to as a PCa beam) that is horizontally attached to the joint has a plurality of connection reinforcing bars protruding from one end face in the longitudinal direction and a plurality of joints inside the other end face. A member is provided, and the connection rebar of one PCa beam is passed through the through hole of the column joint, and inserted and joined to the joint member of the adjacent PCa beam that has already been placed, so that the PCa beams are connected to the column joint. is known (see Patent Document 1).

PCa prestressed concrete (PCa prestressed concrete) that integrally forms at least the joint portion of the column and at least the end portion of the beam in the first direction joined to the joint portion for the purpose of increasing the span of the beam in such a Rahmen structure. The present applicant has proposed a Rahmen structure having column and beam members made of PCaPC and beam members made of PCaPC that constitute beams in the second direction (see Patent Document 2). In this Rahmen structure, the beam member has a beam body portion and a pair of beam widening portions formed so as to widen in both sides at both ends in the axial direction of the beam body portion. are crimped (compression-bonded or pressure-bonded) to each other by the tension of the PC steel rods provided so as to penetrate the widened portion of the beam and the joint portion.

Japanese Patent No. 4781687 Japanese Patent No. 6271377

However, in the Rahmen structure described in Patent Document 2, two column-to-beam members continuing in the first direction (PCa members having joints forming column joints) protrude from the end surface of one of the column-to-beam members. A plurality of beam main reinforcements are inserted into a plurality of sleeve joints provided on the other column-to-beam member, and connected to each other by injecting grout into the sleeve joints. Therefore, in addition to tensioning the PC steel rods for connecting the beam members and the column-to-beam members, grouting work for connecting the column-to-beam members is required. As a result, the number of man-hours required for assembly is increased, and the assembly work becomes complicated. In addition, once both column and beam members are connected by injecting grout, they cannot be separated thereafter. Therefore, both members must be destroyed when dismantling the Rahmen structure, which complicates the dismantling work. Moreover, the beam-column members cannot be reused.

SUMMARY OF THE INVENTION In view of such a background, it is an object of the present invention to facilitate the assembly and dismantling operations and to enable the reuse of PCa members that form the joints of columns.

In order to solve such problems, an embodiment of the present invention provides a plurality of pillars ( 2), a plurality of first beams (3) bridged between the joints of each pair of the pillars adjacent to each other in the first direction, and the A frame structure (1) comprising a plurality of second beams (5) constructed between joints, wherein the joints of the pillars are arranged in the middle part or end part in the first direction. a mouth portion (21) and at least one first beam body portion ( 22), and a plurality of first beams made of PCaPC embedded in the upper part of the first beam main body portion so that the first PC material (25) extending in the first direction penetrates the joint portion. A pair of said first beam members (11, 11) adjacent to each other in said first direction having members (11) having a first unbonded tendon (26) at a longitudinally intermediate portion of said first beam. are pressed against each other by Here, the PC material means an elongated member for introducing prestress to concrete, and includes PC steel wire, PC steel bar, PC steel stranded wire, FRP rod, and other wire- or rod-shaped members.

According to this configuration, the two first beam members that constitute the joint of the column and part of the first beam are pressed against each other by the first unbond tendon at the longitudinal intermediate portion of the first beam. Therefore, grout injection work for connecting both first beam members is not required. This reduces man-hours during assembly and simplifies the assembly work. Moreover, since both first beam members can be separated again after assembly by removing the first unbonded tendon, there is no need to destroy both members when dismantling the frame structure, which simplifies the dismantling work. Moreover, the first beam member can be reused.

Preferably, a cover member (28) is provided on the end face of the first beam member in the first direction, and the cover members of each pair of the first beam members (11, 11) adjacent to each other in the first direction are provided. A curable joint compound (29) is filled between the .

According to this configuration, it is possible to prevent the first beam member from being damaged by local stress generated by direct pressure contact between the joint end surfaces of the first beam member. In addition, manufacturing errors of the first beam member and construction errors during assembly can be absorbed by the joint material.

Preferably, a plurality of second beam members (12) made of PCaPC having a second PC member (35) embedded in the lower part forming the second beam (5) and extending in the second (Y) direction are further provided. The second beam members are pressed against the joint portions (21) of the pair of first beam members (11) by second unbond tendons (36) at both ends in the longitudinal direction.

According to this configuration, since the second beam member constituting the second beam is pressed against the pair of joint portions by the second unbonded tendon at both ends in the longitudinal direction, the second beam member can be connected. No grouting work is required, and assembly and dismantling work are simplified. Also, since the second beam member can be separated from the first beam member after assembly by removing the second unbonded tendon, it is possible to reuse the first beam member and the second beam member.

Preferably, a plurality of the second beam members (12) are provided so as to be continuous in the second (Y) direction with the joint (21) interposed therebetween, and each pair adjacent to each other in the second direction Said second beam members (12, 12) are pressed against said joint of said first beam member by said common second unbond tendon (36).

According to this configuration, it is possible to halve the number of press-contact points compared to the case where each of the two second beam members provided adjacent to each other in the second direction is press-contacted to the joint portion of the first beam member. In addition, compared to the case where these second beam members are joined to the joint portion by separate second unbonded tendons, the degree of freedom in arranging the second unbonded tendons can be increased.

Preferably, a plurality of column members (13) made of PCa concrete forming the main body of the column (2) are further provided, and are arranged vertically with respect to each other with the connection portion (21) of the first beam member (11) interposed therebetween. Each adjacent pair of said column members (13, 13) is pressed against said joint of said first beam member by a third unbonded tendon (46).

According to this configuration, the two vertically adjacent column members are pressed against the joint portion by the third unbonded tendon, so grouting work for connecting the column members is not necessary, and assembly and dismantling work are not required. becomes easier. Also, since the column member can be separated from the first beam member after assembly by removing the third unbonded tendon, the first beam member and the column member can be reused.

Preferably, the column member (13) has an upper end projection (42) projecting in the second direction from the upper part of the side surface facing the second (Y) direction, and a lower part of the side surface facing the second direction. and a lower end projection (43) protruding in the second direction, the third unbonded tendon (46) vertically penetrates the second beam member (12), and extends through the lower column member and the lower end projection of the upper pillar member are pressed against the second beam member (12).

According to this configuration, two vertically adjacent column members can be pressed against the joint portion of the first beam member by the common third unbonded tendon that penetrates the second beam member. This simplifies assembly and dismantling operations for connecting the column members.

Preferably, the first beam member (11) has a connection projection (44) projecting from the connection portion (21) in the second (Y) direction, and the third unbonded tendon ( 46) penetrates the connection projection in the vertical direction, and connects the upper end projection (42) of the lower column member (13) and the lower end projection (43) of the upper column member to the connection projection. pressure contact.

According to this configuration, the tension of the third unbonded tendon is directly transmitted from the upper end projection and the lower end projection to the connection projection of the first beam member. Therefore, compared with the case where there is a space between the upper end projection and the lower end projection, the upper end projection and the lower end projection can have a simple structure with small shear strength.

In order to solve the above problems, an embodiment of the present invention provides a building (200) comprising a frame structure (1) configured as described above and a plurality of interior units (150) arranged inside the frame structure. wherein the plurality of first beam members (11), the plurality of second beam members (12), and the plurality of column members (13) are separable from each other, and the plurality of interior units comprise the frame structure It is configured so that it can be installed and removed from the

According to this configuration, it is easy to assemble and dismantle the frame structure and install and remove the frame structure of the interior unit. Therefore, the building can be suitably used as a building with a time limit.

In order to solve the above problems, an embodiment of the present invention provides a plurality of pillars (2 ), a plurality of first beams (3) bridged between the joints of each pair of the columns adjacent to each other in the first direction, and the finish of each pair of the columns adjacent to each other in the second direction A frame structure (101) comprising a plurality of second beams (5) constructed between mouths, wherein the joints are arranged in the middle part or the end part in the first direction to form the joints of the pillars. and at least one first beam end (122 ), and a plurality of connection members made of PCaPC ( 111), and a plurality of intermediate beam members (112) forming an intermediate portion of the first beam, wherein the connection member and the intermediate beam member adjacent to each other in the first direction form a first unbond tendon (26 ) are pressed against each other.

According to this configuration, the joint member and the intermediate beam member, which constitute the joint of the column and the end of the first beam, are formed by the first unbonded tendon at the intermediate portion near the end in the longitudinal direction of the first beam. pressed against each other. Therefore, grout injection work for connecting the connection member and the intermediate beam member is not required. This reduces man-hours during assembly and simplifies the assembly work. In addition, since the connection member and the intermediate beam member can be separated again after assembly by removing the first unbonded tendon, there is no need to destroy both members when dismantling the frame structure, which simplifies the dismantling work. Moreover, the joint member and the intermediate beam member can be reused. Also, by preparing a plurality of types of intermediate beam members having different lengths, it is possible to change the span of the column in the first direction.

Preferably, a cover member (28) is provided on the end surface of the joint member (111) in the first (X) direction, and the cover member and the beam middle of the joint members adjacent to each other in the first direction are provided. A hardening joint material (29) is filled between the members.

According to this configuration, it is possible to prevent the first beam end portion of the connection member from being damaged by local stress generated when the joint end surface of the joint member is directly pressed against the joint end surface of the intermediate beam member. can be done. In addition, the joint material can absorb manufacturing errors of the joint members and construction errors during assembly.

Preferably, said joint member (111) has two said first beam ends (122) extending from said joint (21) in both of said first (X) directions, and said first An unbonded tendon (26) is disposed through the joint portion over the entire length of the joint member in the first direction, and two beams adjacent to both sides of the joint member in the first direction. An intermediate member (112) is pressed against both end faces of the joint member.

According to this configuration, it is possible to halve the number of press-contact points compared to the case where each of the two first beam ends of the joint member is connected to the corresponding intermediate beam member by the first unbonded tendon.

Preferably, each of the plurality of joint members (111) further has a column body portion (141) forming the body portion of the corresponding column (2), and each pair of the joint members adjacent to each other in the vertical direction. (111, 111) are pressed together by a third unbonded tendon (46).

According to this configuration, compared to the case where the joint member and the main body member of the pillar are configured separately, the number of connection points of the members to be connected in the vertical direction can be halved.

In order to solve the above problems, an embodiment of the present invention provides a building (200) comprising a frame structure (101) configured as described above and a plurality of interior units (150) arranged inside the frame structure. wherein the frame structure forms the second beams (5), and a plurality of PCaPC second beams in which a second PC material (35) extending in the second (Y) direction is embedded in the lower part a member (12), wherein the second beam member is attached to the joint portions (21) of the pair of joint members (111) at both longitudinal ends thereof by a second unbonded tendon (36); The plurality of joint members, the plurality of intermediate beam members (112), and the plurality of second beam members are separable from each other, and the plurality of interior units are installed and installed on the frame structure. It is configured to be removable.

According to this configuration, it is easy to assemble and dismantle the frame structure and install and remove the frame structure of the interior unit. Therefore, the building can be suitably used as a building with a time limit.

As described above, according to the present invention, the assembly and dismantling operations are simple, and the PCa member constituting the joint of the column can be reused.

1 is a perspective view showing a partially exploded frame structure according to a first embodiment; FIG. (A) Side view (II arrow view in FIG. 1), (B) Cross-sectional view (BB cross section in A) showing the connection structure of the first beam (A) Side view of part III in FIG. 2, (B) cross-sectional view (BB cross section in A) (A) Side view (IV arrow view in FIG. 1), (B) Cross-sectional view (BB cross section in A) showing the connection structure of the second beam Side view showing the connection structure of the pillar (view from arrow IV in Fig. 1) (A) Side view and (B) cross-sectional view corresponding to FIG. 3 of the frame structure according to the first modification (A) Side view and (B) cross-sectional view corresponding to FIG. 3 of the frame structure according to the second modification (A) Side view and (B) cross-sectional view corresponding to FIG. 3 of the frame structure according to the third modification (A) Side view and (B) cross-sectional view corresponding to FIG. 3 of the frame structure according to the fourth modification Side view of the second beam corresponding to FIG. 4 of the frame structure according to the fifth modification A side view showing a column connection structure corresponding to FIG. 5 of the frame structure according to the sixth modification A side view showing a column connection structure corresponding to FIG. 5 of the frame structure according to the seventh modification The side view corresponding to FIG. 2 of the frame structure based on 2nd Embodiment A side view corresponding to FIG. 13 of the frame structure according to the eighth modification A perspective view of a building under construction showing an example of the use of the frame structure according to the invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the terms "inside" and "outside" refer to the inside and outside of the building.

<<First embodiment>>
First, a first embodiment of the present invention will be described with reference to FIGS. 1 to 11. FIG. As shown in FIG. 1, the frame structure 1 is spaced apart from each other at a predetermined interval in the X direction, which is the first direction (perpendicular in this embodiment) which intersects on the horizontal plane, and the Y direction, which is the second direction. A plurality of pillars 2 made of reinforced concrete are arranged so as to be aligned. In this embodiment, the pillars 2 are arranged in three or more rows in the X direction and in two rows in the Y direction. Therefore, the four pillars 2 arranged at the ends in the X direction are all corner pillars.

Here, reinforced concrete refers to reinforcing bars, reinforcing fibers (carbon fiber, glass fiber, aramid fiber, etc.) to increase the strength (especially tensile strength) of concrete, PC materials (slender members for introducing prestress to concrete) ; PC steel wire, PC steel bar, PC steel stranded wire, FRP rod, and other wire or rod-shaped members) are embedded or mixed with concrete-based materials. Reinforced concrete may be reinforced concrete (RC), FRC (Fiber Reinforced Concrete), PRC (Prestressed Reinforced Concrete), PC (Prestressed Concrete), and other materials as long as they are mainly made of concrete materials. may

A plurality of first beams 3 made of reinforced concrete and extending in the X direction are installed between the columns 2, 2 adjacent to each other in the X direction. An X-direction frame 4 extending to . A plurality of second beams 5 made of reinforced concrete extending in the Y direction are installed between the pillars 2, 2 adjacent to each other in the Y direction. A Y-direction frame 6 extending in the Y-direction is constructed. The first beam 3 and the second beam 5 are joined to the column 2 at positions overlapping each other in the vertical direction. The joint between the pillar 2 and the first beam 3 and the joint between the pillar 2 and the second beam 5 form a common joint (in the vertical direction) in the pillar 2 .

A slab (not shown) is constructed above or above the first beam 3 and the second beam 5 . The second beam 5 is longer than the first beam 3, and the pitch of the pillars 2 in the Y direction is greater than the pitch of the pillars 2 in the X direction. One or a plurality of small beams extending in the X direction may be installed between the two second beams 5, 5 adjacent to each other in the X direction. The first beam 3, the second beam 5 and the slab are constructed in multiple layers at different positions in the vertical direction. That is, the frame structure 1 has a multilayer Rahmen structure.

Since the frame structure 1 has a structure described later, it is easy to assemble and dismantle and can be reused. Therefore, this frame structure 1 is suitable for fixed-term buildings (intermediate buildings between temporary buildings and permanent buildings, such as expo facilities and temporary housing for disaster victims). The frame structure 1 is also suitable for use in expanding or reducing the size of a building or increasing or decreasing the height of a building. Alternatively, the frame structure 1 may be used in buildings such as distribution warehouses, office buildings, housing complexes, and commercial facilities.

The frame structure 1 is constructed by assembling a plurality of types of PCa concrete members (hereinafter referred to as PCa members) made of precast concrete. These PCa members include a plurality of first beam members 11, a plurality of second beam members 12, and a plurality of column members 13 for each floor. The first beam member 11 is joined to the upper surface of the column member 13, is integrally formed with the joint portion 21 forming the joint of the column 2, and the joint portion 21, and extends from the joint portion 21 in at least one direction in the X direction. and at least one first beam body portion 22 protruding to form a part of the first beam 3 .

The column member 13 forms the main body of the column 2 (in the illustrated example, the entire portion below the joint), and is joined to the upper surface of the joint 21 of the first beam member 11 on the foundation or the lower layer. . If it is difficult to handle such as when the floor height is large or when the cross-sectional dimension of the column 2 is large and the weight is heavy, the column member 13 is divided vertically and two or more PCa members are used to cover one layer. A portion of the pillar 2 excluding the joint portion 21 may be configured. In this embodiment, the column member 13 is a PCa member made of RC into which no prestress is introduced.

The joint portion 21 of the first lower beam member 11 is joined to the upper surface of the lower layer column member 13, and the upper column member 13 is joined to the upper surface of the joint portion 21 of the first lower beam member 11, and these are joined. The repetition increases the number of layers in the building. That is, the column member 13 is provided between the first beam member 11 of the layer (lower layer) and the first beam member 11 of the upper layer.

The first beam member 11 joined to the upper surface of the column member 13 of the column 2 positioned at the end in the X direction has a joint portion 21 and one first beam body portion 22 . The first beam member 11 joined to the upper surface of the column member 13 of the other column 2 has a joint portion 21 and two first beam main body portions 22 . Although these first beam members 11 have different shapes, they are both referred to as first beam members 11 here. The first beam body portion 22 of each first beam member 11 constitutes a beam half portion which is approximately half of the first beam 3 . In another example, one first beam body portion 22 of the first beam member 11 may have a different length from the other first beam body portion 22 . The two first beam members 11 forming the connection of the pillar 2 arranged adjacently in the X direction are arranged so as to be continuous in the X direction with the tip surfaces of the first beam main bodies 22 facing each other adjacently. be done.

The second beam member 12 constitutes the entire second beam 5 and is formed separately from the joint portion 21 of the column 2 . In another example, the end portion of the second beam 5 may be integrally formed with the joint portion 21 of the column member 13 . Both ends of the second beam member 12 are joined to the joint portions 21 of a pair of columns 2 adjacent to each other in the Y direction.

2A and 2B are a side view of the first beam 3 (a view along the arrow II in FIG. 1) and a cross-sectional view of the first beam 3 (B--B cross section in A). As shown in FIG. 2, the first beam main body portion 22 of the first beam member 11 has a rectangular cross-sectional shape at the distal end portion 23, and the other portion (hereinafter referred to as a general portion 24) in the vertical direction. It has an I-shaped cross section in which both sides are recessed at a portion. In other words, the tip portion 23 of the first beam main body portion 22 forms a widened portion that is widened with respect to the general portion 24 at least partially in the vertical direction. This widened portion forms a shoulder surface facing the joint portion 21 at the end portion of the tip portion 23 on the side of the general portion 24 . In another example, the general portion 24 of the first beam main body portion 22 may have a base end portion having the same cross-sectional shape as the tip portion 23 at the end portion on the side of the joint portion 21 .

A plurality of first PC members 25 extending in the X direction are arranged over the entire length of the first beam member 11 on the upper portion of the first beam member 11 . The first PC material 25 may be any member such as a PC steel wire, a PC steel bar, a PC steel stranded wire, an FRP rod, etc. In this embodiment, the PC steel stranded wire is used. The first PC material 25 is arranged inside the first beam member 11 by a pretension method when manufacturing the first beam member 11 at a factory, and introduces prestress to the first beam member 11 in the member axial direction. That is, the first beam member 11 is made of PCaPC. Two first beam members 11 arranged continuously in the X direction are joined together by a plurality of first unbonded tendons 26 . As a result, the first beam main body portions 22 of the two first beam members 11 are connected in the X direction, and the entire first beam 3 is configured by the first beam members 11 of the two first beam members 11 . A joint structure using the first unbonded prestressing tendon 26 will be described later in detail.

3A and 3B are a side view and a cross-sectional view (B--B cross section in A) of the III part in FIG. A joint structure of the first beam member 11 will be described in detail with reference to FIG. 3 . A plurality of first sheaths 27 are embedded in the distal end portion 23 (specifically, the widened portion) of the first beam member 11 so as to pass through the distal end portion 23 in the X direction. A cover plate 28 is provided as a cover member on the end surface of the tip portion 23 of the first beam member 11 . The cover plate 28 may be made of metal or resin, for example, and may be integrally attached to the first beam member 11 or may be detachably provided. Alternatively, a cover sheet may be provided as the cover member. A through hole is formed in the cover plate 28 at a position corresponding to the first sheath 27 . The two first beam members 11 arranged so as to be continuous in the X direction are arranged so as to face each other at positions where the cover plates 28 are close to each other and separated from each other. A gap between the two first beam members 11 (between the cover plates 28) is filled with a joint material 29 made of a hardening filler such as non-shrink mortar or resin mortar. The cover plate 28 is preferably provided with an uneven portion on the joint-side surface in order to increase the adhesion of the joint material 29 . A connecting sheath (not shown) is provided between each pair of first sheaths 27 to prevent the joint material 29 from entering the first sheaths 27 .

Two first beam members 11 that are continuous in the X direction are pressure-welded (crimp-bonded) to each other by a plurality of first unbonded tendons 26 inserted so as to penetrate these first sheaths 27 . The first unbonded tendon 26 is composed of the first tendon 26a inserted through the first sheath 27 and the shoulder surface of the distal end portion 23 of each of the first beam members 11, and the first tendon 26a and a pair of first fixing metal fittings 26b for maintaining a tension of . In this embodiment, male threads are formed on both ends of the first tendon 26a. Prepare. By screwing the nut of the first fixing hardware 26b onto the male thread of the first tendon 26a and tightening it with a predetermined torque, the first tendon 26a is given a desired tension, and the two first beam members 11 are separated. , 11 are pressed against each other.

No filler material is filled inside or between these first sheaths 27, and the first unbonded prestressing tendon 26 can be removed by loosening the nut of the first anchoring hardware 26b. Since the pair of first beam members 11, 11 adjacent to each other in the X direction are pressed against each other by the first unbond tendon 26 at the longitudinal intermediate portion of the first beam 3, the two first beams A grouting operation for connecting the members 11, 11 is not required. Also, by removing the first unbonded tendon 26, the two first beam members 11, 11 can be separated again after assembly.

As described above, the cover plate 28 is provided on the end face of the first beam member 11 in the X direction, and the cover plate 28 of each pair of the first beam members 11, 11 adjacent to each other in the X direction is provided with a hardening material. is filled with joint material 29. Therefore, the first beam member 11 is prevented from being damaged by local stress generated by direct pressure contact between the joint end surfaces of the first beam member 11 . In addition, with this configuration, manufacturing errors of the first beam member 11 and construction errors during assembly can be absorbed by the joint material 29, and manufacturing costs and construction costs can be reduced.

4A and 4B are a side view of the second beam 5 (view from arrow IV in FIG. 1) and a cross-sectional view of the second beam 5 (B--B cross section in A). As shown in FIG. 4, the second beam member 12 has a rectangular cross-sectional shape at both tip portions 33 in the longitudinal direction (Y direction), and the other portions (hereinafter referred to as general portions 34) have upper and lower It has an I-shaped cross section in which both side surfaces are recessed in the middle part of the direction. In other words, the tip portion 33 of the second beam member 12 forms a widened portion that is widened with respect to the general portion 34 at least partially in the vertical direction. Due to the widened portion of the tip portion 33 , a shoulder face facing in a direction opposite to the end face is formed at the end portion of the tip portion 33 on the side of the general portion 34 .

A plurality of second PC members 35 extending in the Y direction are arranged over the entire length of the second beam member 12 below the second beam member 12 . The second PC material 35 may be any member such as a PC steel wire, a PC steel bar, a PC steel stranded wire, an FRP rod, etc. In this embodiment, the PC steel stranded wire is used. The second PC material 35 is arranged inside the second beam member 12 by a pretension method when manufacturing the second beam member 12 at a factory, and introduces prestress to the second beam member 12 in the member axial direction. That is, the second beam member 12 is made of PCaPC. The second beam member 12 is joined by a plurality of second unbonded tendons 36 to the joint portions 21 of the two first beam members 11 spaced apart in the Y direction.

The joining structure of the second beam member 12 to the joint portion 21 of the first beam member 11 by the second unbonded tendon 36 is the same as the joining structure described with reference to FIG. to explain. A plurality of second sheaths (not shown) are embedded in each of the distal end portion 33 (specifically, the widened portion) of the second beam member 12 and the joint portion 21 of the first beam member 11 so as to penetrate in the Y direction. It is A cover plate 28 (see FIG. 3) is attached to the end surface of the tip portion 33 of the second beam member 12 and the inner side surface of the joint portion 21 of the first beam member 11 in the Y direction. A through hole is formed in the cover plate 28 at a position corresponding to the second sheath. The second beam member 12 is arranged so that the cover plates 28 face each other at positions close to each other and separated from each other between the joint portions 21 of the two first beam members 11 arranged on both sides in the Y direction. . The gap between the second beam member 12 and the joint portion 21 (between the cover plates 28) is filled with a joint material 29 (see FIG. 3) made of a hardening filler such as non-shrink mortar or resin mortar. A connecting sheath (not shown) is provided between each pair of second sheaths to prevent the joint material 29 from entering the second sheaths. In another example, the cover plate 28 and the joint material 29 may not be provided, and the second beam member 12 may be arranged such that the end surface thereof is in direct contact with the side surface of the joint portion 21 .

The distal end portion 33 of the second beam member 12 and the joint portion 21 of the first beam member 11 adjacent in the Y direction are connected by a plurality of second unbonded tendons 36 inserted so as to penetrate each pair of second sheaths. They are pressure-welded (crimp-bonded) to each other. The second unbonded tendon 36 includes a second tendon 36a (see FIG. 5) inserted through the pair of second sheaths, a shoulder surface of the tip portion 33 of the second beam member 12, and a finish of the first beam member 11. It has a pair of second fixing metal fittings 36b (see FIG. 5) that maintain the tension of the second tendons 36a by applying reaction force to the Y-direction outer side surface of the opening 21 . In this embodiment, male threads are formed on both ends of the second tendon 36a, and the second fixing hardware 36b is provided on the shoulder surface of the second beam member 12 and the outer side of the joint portion 21 of the first beam member 11. It has a perforated steel plate on the side and a nut with an internal thread. By screwing the nut of the second fixing hardware 36b onto the male thread of the second tendon 36a and tightening it with a predetermined torque, a desired tension is applied to the second tendon 36a, and both members are pressed against each other. .

There is no filler material in and between these second sheaths and the second unbonded prestressing tendon 36 can be removed by loosening the nut of the second anchoring hardware 36b. As described above, the second beam member 12 is pressed against the joint portions 21 of the pair of first beam members 11 by the second unbonded tendons 36 at both ends in the longitudinal direction. There is no need for grouting work for Also, the second beam member 12 can be separated again after assembly by removing the second unbonded prestressing tendons 36 at both ends.

FIG. 5 is a side view (view along arrow IV in FIG. 1) showing the connection structure of the column 2. As shown in FIG. Note that both upper and lower parts in FIG. 5 indicate the same parts as the left part in FIG. However, since FIG. 4 is an explanatory diagram of the connection structure of the second beam member 12, it should be noted that the connection structure of the column 2 shown in FIG. 5 is omitted.

As shown in FIG. 5, the column member 13 includes a column body portion 41 having a rectangular constant cross-sectional shape, inner and outer upper end projections 42 projecting in the Y direction at the upper part of the side surface facing the Y direction, and Y It has inner and outer bottom projections 43 projecting in the Y direction at the bottom of the facing sides. Each of the upper end projections 42 and each of the lower end projections 43 is a widened portion that is widened at the upper end and the lower end of the column member 13 with respect to other portions of the column body portion 41 . Each upper end projection 42 forms a shoulder surface facing downward at the lower end, and each lower end projection 43 forms a shoulder surface facing upward at the upper end.

The first beam member 11 has a connection projection 44 that protrudes outward in the Y direction from the connection portion 21 . The connection projection 44 has the same height dimension as the connection portion 21 and has a shape corresponding to the upper end projection 42 and the lower end projection 43 .

The first beam member 11 is placed on the column member 13 via a joint material 29 (see FIG. 3) so that the joint portion 21 is continuous with the column body portion 41 of the column member 13 of the layer. The first beam member 11 of the upper layer is placed on the joint portion 21 of the first beam member 11 via a joint material 29 (see FIG. 3) so as to be continuous. The end of the second beam member 12 is placed on the inner upper end projection 42 of the lower column member 13 via a joint material 29, and the upper column member is placed on the end of the second beam member 12. 13 is placed through the joint material 29 . The connection projection 44 of the first beam member 11 is placed on the outer upper end projection 42 of the lower column member 13 via the joint material 29 , and the upper column member 13 is placed on the connection projection 44 . is placed through the joint material 29 . In other examples, the joint material 29 may not be provided.

Two column members 13 that are vertically adjacent to each other with the first beam member 11 interposed therebetween are separated by inner and outer third unbonded tendons 46 that are provided so as to penetrate the upper end projection 42 and the lower end projection 43 in the vertical direction. It is joined to the joint portion 21 of the beam member 11 . The third unbonded tendon 46 on the inner side is further provided so as to pass through the ends of the second beam member 12 in the vertical direction, and the upper and lower ends are fixed to the upper end projections 42 and the lower end projections 43 . The outer third unbonded tendon 46 is further provided so as to penetrate the connection projection 44 in the vertical direction, and its upper and lower ends are fixed to the upper end projection 42 and the lower end projection 43 .

The joining structure of the upper and lower two column members 13 to the joint portion 21 of the first beam member 11 by the third unbonded tendon 46 is the same as the joining structure described with reference to FIG. Description will be omitted. A third sheath ( (illustration omitted) are embedded respectively. The third unbonded tendon 46 includes a third tendon 46a inserted through the third sheath, the shoulder surface of the lower end projection 43 of the upper column member 13, and the shoulder surface of the upper end projection 42 of the lower column member 13. and a pair of third fixing metal fittings 46b for maintaining the tension of the third tendon 46a by taking a reaction force. In this embodiment, male threads are formed on both ends of the third tendon 46a, and the third fixing hardware 46b is provided on the shoulder surface of the upper column member 13 and the shoulder surface of the lower column member 13. It has a perforated steel plate and a nut with an internal thread. By screwing the nut of the third fixing hardware 46b onto the external thread of the third tendon 46a and tightening it with a predetermined torque, the desired tension is applied to the third tendon 46a, and the two column members 13 are secured to the third tendon 46a. It is pressed against the joint portion 21 of the 1-beam member 11 .

The first tendon 26a, the second tendon 36a, and the third tendon 46a may be any member such as a PC steel wire, a PC steel bar, a PC steel stranded wire, an FRP rod, and the like. It is considered to be PC steel wire.

No filler material is filled in and between the three third sheaths, and the third unbonded prestressing tendon 46 can be removed by loosening the nut of the third anchoring hardware 46b. In this way, each pair of column members 13 , 13 vertically adjacent to each other with the connection portion 21 of the first beam member 11 interposed therebetween is pressed against the connection portion 21 of the first beam member 11 by the third unbonded tendon 46 . Therefore, grout injection work for connecting the column members 13 is not required. Further, the column member 13 can be separated from the first beam member 11 after assembly by removing the third unbonded tendon 46 .

The first tendon 26a, the second tendon 36a, and the third tendon 46a may be any member such as a PC steel wire, a PC steel bar, a PC steel stranded wire, an FRP rod, and the like. It is considered to be PC steel wire.

Since the first beam member 11, the second beam member 12, and the column member 13 are assembled by pressure welding by the first unbonded tendon 26, the second unbonded tendon 36, and the third unbonded tendon 46, the frame structure 1 No grouting work is required during assembly. This reduces man-hours during assembly and simplifies the assembly work. Also, by removing these unbonded tendons (26, 36, 46), the frame structure 1 can be separated again after assembly. There is no need to do so, and the dismantling work becomes easier. In addition, there is almost no noise, vibration, or dust generated during dismantling, and no special heavy machinery is required. Moreover, these members (11, 12, 13) can be reused.

In addition, the inner third unbonded tendon 46 penetrates the second beam member 12 in the vertical direction, and connects the upper end projection 42 of the lower column member 13 and the lower end projection 43 of the upper column member 13 to the second beam member 12 . press against. As a result, the two vertically adjacent column members 13, 13 are pressed against the joint portion 21 of the first beam member 11 by the common inner third unbond tendon 46 penetrating the second beam member 12, Assembly work and dismantling work related to the connection of the column members 13 are simplified.

Further, the outer third unbonded tendon 46 penetrates the connection projection 44 in the vertical direction, and presses the upper end projection 42 of the lower column member 13 and the lower end projection 43 of the upper column member 13 against the connection projection 44 . do. As a result, the tension of the outer third unbonded tendon 46 is transmitted directly from the upper end projection 42 and the lower end projection 43 to the connection projection 44 of the first beam member 11 . Therefore, compared to the case where there is a space between the upper end projection 42 and the lower end projection 43, the upper end projection 42 and the lower end projection 43 can have a simple structure with small shear strength.

Next, first to fourth modifications of the frame structure 1 according to the first embodiment will be described with reference to FIGS. 6 to 9. FIG. In the first to fourth modifications, the connecting structure of the first beam member 11 is different from that of the above embodiment. In the description of the modified example, points different from the above embodiment will be described, and redundant description will be omitted. In addition, the same code|symbol is attached|subjected to the element which is the same as that of the said embodiment, or is similar.

FIG. 6 is (A) a side view and (B) a sectional view corresponding to FIG. 3 of the frame structure 1 according to the first modified example. Two first beam members 11 arranged so as to be continuous in the X direction are joined together by a plurality of first unbonded tendons 26 arranged in the vertical direction. A specific description will be given below.

Notches 51 are formed in the upper and lower surfaces of the tip portion 23 of the first beam body portion 22 of the first beam member 11 . The notch 51 on the upper surface slopes upward toward the tip of the first beam body 22 , and the notch 51 on the bottom slopes downward toward the tip of the first beam body 22 . At the junction of the two first beam members 11, there are an upper joint fitting 53 having wedge-shaped projections 52 at both ends that are received in the notches 51 on the upper surface, and a wedge-shaped projection that is received in the notches 51 on the lower surface. A lower joint fitting 53 having protrusions 52 at both ends is bridged therebetween. The two first beam members 11 are pressed against each other by applying tension in the compression direction to the two joint fittings 53 by the plurality of first unbonded prestressing tendons 26 .

Even if the two first beam members 11 are joined in this way, the first unbonded tendon 26 can be removed by loosening the nut of the first fixing hardware 26b, and the two first beam members 11 can be removed in the same manner as in the first embodiment. The beam members 11, 11 can be separated again after assembly.

FIG. 7 is (A) a side view and (B) a sectional view corresponding to FIG. 3 of the frame structure 1 according to the second modification. Two first beam members 11 arranged so as to be continuous in the X direction are joined together by a plurality of first unbonded tendons 26 arranged in the vertical direction and the Y direction. A specific description will be given below.

In the first beam body portion 22 of the first beam member 11 , the tip portion 23 has the same cross-sectional shape as the general portion 24 . In another example, the tip 23 may have a rectangular cross-sectional shape similar to the first embodiment. At the joint of the two first beam members 11, four splice plates 61 are arranged along the upper surface, the lower surface, the right side, and the left side so as to straddle the joint surface. The upper and lower splice plates 61 are pressed against the two first beam members 11 by applying tension in the compression direction by a plurality of vertically arranged first unbonded tendons 26 . The left and right splicing plates 61 are pressed against the two first beam members 11 by applying tension in the compression direction by the plurality of first unbonded tendons 26 arranged in the Y direction.

Even if the two first beam members 11 are joined in this way, the first unbonded tendon 26 can be removed by loosening the nut of the first fixing hardware 26b, and the two first beam members 11 can be removed in the same manner as in the first embodiment. The beam members 11, 11 can be separated again after assembly.

FIG. 8 is (A) a side view and (B) a sectional view corresponding to FIG. 3 of the frame structure 1 according to the third modification. The two first beam members 11 arranged so as to be continuous in the X direction have different shapes and are joined together by a plurality of first unbonded tendons 26 arranged in the vertical direction. A specific description will be given below.

In the first beam member 11 on one side (the left side in the illustrated example), the tip portion 23 of the first beam body portion 22 extends only from the upper portion of the general portion 24 . In the first beam member 11 on the other side (on the right side in the illustrated example), the tip portion 23 of the first beam body portion 22 extends only from the lower portion of the general portion 24 . The tip portions 23 of the two first beam members 11 have complementary shapes, and overlap each other vertically to form substantially the same beam configuration as the general portion 24 . An upper splice plate 71 is arranged along the upper surface of the tip portion 23 of the first beam member 11 on the left side, and a lower splice plate 72 is arranged along the lower surface of the tip portion 23 of the first beam member 11 on the right side. placed. The two first beam members 11 are vertically tensioned by a plurality of first unbonded tendons 26 arranged vertically to penetrate the upper splint plate 71 and the lower splint plate 72. are pressed against each other in the vertical direction. The upper splicing plate 71 and the lower splicing plate 72 may be omitted according to the required strength.

Even if the two first beam members 11 are joined in this way, the first unbonded tendon 26 can be removed by loosening the nut of the first fixing hardware 26b, and the two first beam members 11 can be removed in the same manner as in the first embodiment. The beam members 11, 11 can be separated again after assembly.

FIG. 9 is (A) a side view and (B) a cross-sectional view corresponding to FIG. 3 of the frame structure 1 according to the fourth modification. Two first beam members 11 arranged so as to be continuous in the X direction are joined together by a plurality of first unbonded prestressing tendons 26 arranged in the X direction, which are tensioned by flat jacks 81 . A specific description will be given below.

The flat jack 81 is arranged between the first beam main body portions 22 of the two first beam members 11 . A plurality of first unbond tendons 26 are arranged to surround the flat jack 81 . Fluid is pumped to the flat jacks 81, and the flat jacks 81 extend in the X direction to impart tension to the plurality of first unbonded tendons 26 so that the two first beam members 11 extend to the plurality of first unbonded tendons. 26 are pressed against each other. The fluid pumped to flat jack 81 may be curable or non-curable.

Even if the two first beam members 11 are joined in this way, the first unbonded tendon 26 can be removed by loosening the nut of the first fixing hardware 26b, and the two first beam members 11 can be removed in the same manner as in the first embodiment. The beam members 11, 11 can be separated again after assembly. If the fluid pumped to the flat jack 81 is a non-hardening fluid, the tension of the first unbonded prestressing tendon 26 can be instantaneously removed by decompressing the flat jack 81 . This mechanism may be used to press the column member 13 against the first beam member 11 or press the column members 13 to each other.

Next, a fifth modification of the frame structure 1 according to the first embodiment will be described with reference to FIG. 10 . FIG. 10 is a side view of the second beam 5 corresponding to FIG. 4 of the frame structure 1 according to the fifth modification. In this modification, the columns 2 are arranged in four or more rows in the Y direction, and a plurality of second beam members 12 are provided so as to be continuous in the Y direction with the joint portion 21 interposed therebetween. Each pair of second beam members 12, 12 adjacent to each other in the Y direction are joined to the first beam member 11 by a common second unbonded tendon 36 that is longer than the second unbonded tendons 36 of the first embodiment. It is pressed against the portion 21 .

In this way, when a plurality of second beam members 12 are continuous in the Y direction with the joint portion 21 interposed therebetween, each pair of second beam members 12 , 12 is connected to the first beam by the common second unbonded tendon 36 . By being pressed against the connection portion 21 of the member 11 , the number of press-contact points is reduced by half compared to the case where each of them is press-contacted by the second unbond tendon 36 . In addition, compared to the case where these second beam members 12 are joined to the connection portion 21 by separate second unbonded tendons 36, the second unbonded tendons 36 have a higher degree of freedom in arrangement, and the second beam members 12 and An increase in the size of the joint portion 21 can be prevented.

Next, a sixth modification of the frame structure 1 according to the first embodiment will be described with reference to FIG. 11 . FIG. 11 is a side view showing the connection structure of the pillars 2 corresponding to FIG. 5 of the frame structure 1 according to the sixth modification. In this modified example, as in the fifth modified example, a plurality of second beam members 12 are provided so as to be continuous in the Y direction with joint portions 21 interposed therebetween. Therefore, the connecting structure of two vertically adjacent column members 13 is slightly different from that of the above-described embodiment. A specific description will be given below.

The first beam member 11 does not have a connection protrusion 44 ( FIG. 5 ) that protrudes outward in the Y direction from the connection portion 21 . Both ends of the two second beam members 12 arranged on both sides in the Y direction with respect to the joint portion 21 are placed on the corresponding upper end projections 42 of the lower column member 13 and , the corresponding lower end projections 43 of the upper column member 13 are placed.

The two pillar members 13 vertically adjacent to each other with the first beam member 11 interposed therebetween include the upper end projection 42, the lower end projection 43, and a plurality of third beam members 12 provided so as to vertically penetrate the ends of the second beam member 12. It is joined to the joint portion 21 of the first beam member 11 by the unbonded tendon 46 .

Even if the two column members 13 are joined in this way, the third unbonded tendon 46 can be removed by loosening the nut of the third fixing hardware 46b, and the two column members 13, 13 can be separated from the first beam member 11 again after assembly.

Next, a seventh modification of the frame structure 1 according to the first embodiment will be described with reference to FIG. 12 . FIG. 12 is a side view showing the connection structure of the columns 2 corresponding to FIG. 5 of the frame structure 1 according to the seventh modification. In this modified example, the connecting structure of two vertically adjacent column members 13 is different from the above-described embodiment and the sixth modified example. A specific description will be given below.

A plurality of third sheaths (see the enlarged view) are embedded in the column member 13 and the joint portion 21 at corresponding positions on the horizontal plane so as to pass through them in the vertical direction. The third unbonded tendon 46 includes a third tendon 46a inserted through the third sheath, and the upper end of the third tendon 46a exerts a reaction force on the upper surface of the joint portion 21 or the upper surface of the column member 13 to form the third unbonded tendon 46a. A third fixing metal fitting 46b that maintains the tension of the tendon 46a, an upper end of the third tendon 46a projecting upward from the third fixing metal fitting 46b, and a lower end of the third tendon 46a arranged above the upper end are connected. and a connecting coupler 46c.

As shown in the enlarged view of FIG. 12, in this embodiment, the third prestressing tendon 46a is a PC steel bar with male threads formed on both upper and lower ends, and the third fixing metal fitting 46b is the joint portion 21. It has a perforated steel plate provided on the upper surface and a nut with an internal thread. By screwing the nut of the third fixing hardware 46b onto the external thread of the third tendon 46a and tightening it with a predetermined torque, the third tendon 46a is given a desired tension, and the first beam member 11 is finished. The mouth portion 21 is pressed against the lower column member 13 , and the column member 13 is pressed against the joint portion 21 of the lower first beam member 11 . The connection coupler 46c connects the third prestressing tendons 46a by screwing onto the upper and lower ends of the third prestressing tendons 46a that are arranged vertically adjacent to each other.

No filler material is filled inside or between the third sheath, and the third unbonded tendon 46 can be removed by loosening the nut of the third fixing hardware 46b and the connecting coupler 46c. Even if the connection structure of the column 2 is configured in this way, grout injection work for connecting the column member 13 is not required. Further, the column member 13 can be separated from the first beam member 11 after assembly by removing the third unbonded tendon 46 .

In this embodiment, the column member 13 does not have the upper end projection 42 and the lower end projection 43 (see FIGS. 5 and 11). In another form, the column member 13 may have an upper end projection 42 to support the end of the second beam member 12 . In this case, the second beam member 12 may be fixed to the upper end projection 42 by a drop-off prevention structure having an appropriate configuration such as a bolt/nut or fitting structure.

<<Second embodiment>>
Next, a second embodiment of the present invention will be described with reference to FIGS. 13 and 14. FIG. Elements that are the same as or similar to those in the first embodiment are given the same reference numerals, and corresponding elements are given reference numerals with 100 added. Similar to the modified example above, redundant description will be omitted.

FIG. 13 is a side view corresponding to FIG. 2 of the frame structure 101 according to the second embodiment. As shown in FIG. 13, in the frame structure 101 of the present embodiment, the PCa members constituting the X-direction frame 4 include a plurality of joint members 111 and a plurality of intermediate beam members 112 for each layer. there is

The joint member 111 is integrally formed with the joint portion 21 forming the joint of the column 2 and the joint portion 21, and extends from the joint portion 21 in at least one direction in the X direction to support the end portion of the first beam 3. and a column main body portion 141 integrally formed with the joint portion 21 and extending upward or downward from the joint portion 21 to form the main body portion of the column 2. there is In this embodiment, the joint member 111 has upper and lower column main body portions 141 that extend vertically from the joint portion 21, and the upper surface of the upper column main body portion 141 of the lower layer joint member 111 has a lower portion. By joining the lower surface of the column main body portion 141 on the side, it is connected to the joint member 111 of the lower layer.

Specifically, each pair of joint members 111 , 111 adjacent to each other in the vertical direction are pressed against each other by a plurality of third unbonded prestressing tendons 46 . Therefore, compared with the case where the joint member 111 and the main body member of the pillar 2 are configured separately, the number of connection points of the members to be connected in the vertical direction is halved. In another example, the PCa members that constitute the X-direction frame 4 may include column members 13 (see FIG. 1) that are separate from the joint members 111 .

The beam intermediate member 112 constitutes the intermediate portion of the first beam 3 and constitutes the first beam 3 in cooperation with the first beam end portions 122 of the joint members 111 arranged on both sides in the X direction. The intermediate beam members 112 may be PCa members, PCaPC members, steel members, precast SRC members, or wooden members. The joint member 111 and the intermediate beam member 112 adjacent to each other in the X direction are pressed against each other by a plurality of first unbonded prestressing tendons 26 at intermediate portions near the ends of the first beam 3 in the longitudinal direction. Each first unbond tendon 26 includes a tip portion 23 formed at the tip of the first beam end portion 122 of the joint member 111 and a tip portion 123 formed at the end portion of the intermediate beam member 112 on the corresponding side. is provided so as to penetrate in the X direction.

A cover plate 28 (see FIG. 3) similar to that of the first embodiment is provided on the end face of the joint member 111 in the X direction. A curable joint compound 29 (see FIG. 3) is filled between the . As a result, the first beam end portion 122 of the joint member 111 is prevented from being damaged by the local stress generated when the joint end face of the joint member 111 is directly pressed against the joint end face of the intermediate beam member 112 . be. Further, manufacturing errors of the joint member 111 and construction errors during assembly can be absorbed by the joint material 29, so that manufacturing costs and construction costs can be reduced.

In this way, since the joint member 111 and the intermediate beam member 112 adjacent to each other in the X direction are pressed against each other by the first unbonded tendon 26, grout injection for connecting the joint member 111 and the intermediate beam member 112 is performed. No work required. This reduces man-hours during assembly and simplifies the assembly work. In addition, since the connection member 111 and the intermediate beam member 112 can be separated again after assembly by removing the first unbonded tendon 26, there is no need to destroy both members (111, 112) when dismantling the frame structure 101. , the dismantling work becomes easier. Moreover, the connection member 111 and the intermediate beam member 112 can be reused. Also, by preparing a plurality of types of intermediate beam members 112 having different lengths, the span of the column 2 in the X direction can be changed.

Next, an eighth modified example of the frame structure 101 according to the second embodiment will be described with reference to FIG. 14 . FIG. 14 is a side view corresponding to FIG. 13 of the frame structure 101 according to the eighth modification. In this modified example, the configuration of the first unbonded prestressing tendon 26 is different from that of the second embodiment. A specific description will be given below.

The joint member 111 forming the joint of the column 2 located in the middle portion in the X direction has two first beam end portions 122 extending from the joint portion 21 in both of the X directions. In this joint member 111, the first unbonded prestressing members 26 pass through the joint portion 21 and are arranged over the entire length of the joint member 111 in the X direction, adjacent to both sides of the joint member 111 in the X direction. The two intermediate beam members 112 are pressed against both end surfaces of the joint member 111 . As a result, compared to the second embodiment in which each of the two first beam end portions 122 of the joint member 111 is connected to the corresponding intermediate beam member 112 by the first unbonded prestressing member 26, the number of pressure contact points is reduced by half.

The joint member 111 forming the joint of the column 2 positioned at the end in the X direction has one first beam end 122 extending from the joint 21 in one direction in the X direction. In this joint member 111 , one end of the first unbonded tendon 26 is fixed to the other end surface of the joint portion 21 in the X direction.

Finally, a usage example of the frame structures 1 and 101 configured as described above will be described. Figure 15 is a perspective view of a building 200 under construction showing an example of the use of the frame structure 1, 101 according to the invention. The building 200 includes the frame structures 1 and 101 configured as described above and a plurality of interior units 150 arranged inside the frame structures 1 and 101 . In the illustrated example, a floor member 151 made of reinforced concrete is placed on the first beams 3 and the second beams 5 of the frame structures 1 and 101 , and the interior unit 150 is placed on the floor member 151 . In another example, the floor members 151 may be placed directly on the first beams 3 and the second beams 5 .

In this building 200, the plurality of first beam members 11, the plurality of second beam members 12, and the plurality of column members 13 of the frame structure 1 are configured to be separable from each other. Alternatively, the plurality of joint members 111, the plurality of second beam members 12, and the plurality of intermediate beam members 112 of the frame structure 101 are configured to be separable from each other.

The interior unit 150 is configured to be installable and removable with respect to the frame structures 1 and 101 . Specifically, the interior unit 150 is lifted by a crane without the upper first beam 3 and the second beam 5 as shown in the figure, and carried into a predetermined position within the frame structure 1, 101. or carried out from a predetermined position. The interior unit 150 has a height dimension greater than the height from the upper surface of the first beam 3 and the second beam 5 adjacent downward to the lower surface of the first beam 3 and the second beam 5 adjacent upward. A portion corresponding to the first beam 3 and the second beam 5 adjacent above the interior unit 150 is notched. By constructing the first beam 3 and the second beam 5 adjacent above, the interior unit 150 is fixed in place by the frame structures 1 and 101 . In another embodiment, the interior unit 150 may be fixed to the frame structure 1, 101 by a fixing member.

Alternatively, the interior unit 150 can be constructed by sliding it on a support stand (not shown) arranged on the side of the frame structure 1, 101 in a state where the first beam 3 and the second beam 5 adjacent above are constructed. It may be carried inside the structure 1 , 101 . Similarly, the interior unit 150 may be carried out from the inside of the frame structure 1, 101 by sliding it on a support stand arranged on the side. In this case, the interior unit 150 may be fixed to the frame structure 1, 101 using a fixing member.

In this manner, a plurality of PCa members are configured to be separable from each other, and the interior unit 150 is configured to be installable and removable with respect to the frame structures 1, 101, thereby assembling and dismantling the frame structures 1, 101 and , the interior unit 150 can be easily installed and removed from the frame structures 1 and 101, and the building 200 can be suitably used as a building with a limited time limit.

Although the specific embodiments have been described above, the present invention is not limited to the above embodiments and can be widely modified. For example, the specific configuration, arrangement, quantity, angle, material, 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 Frame structure 2 Column 3 First beam 4 X-direction frame 5 Second beam 6 Y-direction frame 11 First beam member 12 Second beam member 13 Column member 21 Joint 22 First beam body 25 First PC material 26 Second 1 unbonded tendon 28 cover plate (cover member)
29 joint material 35 second PC material 36 second unbonded tendon 41 column main body 42 upper end projection 43 lower end projection 44 joint projection 46 third unbonded tendon 101 frame structure 111 joint member 112 beam intermediate member 122 first beam end 141 Column body 150 Interior unit 200 Building X direction First direction Y direction Second direction

Claims (11)

a first direction and a plurality of columns spaced apart from each other in a second direction intersecting the first direction; A frame structure comprising a first beam and a plurality of second beams constructed between the joints of each pair of the columns adjacent to each other in the second direction,
a joint portion disposed at an intermediate portion or end portion in the first direction and forming the joint of the column; At least one first beam main body part protruding and forming a part of the first beam, the first beam main body part extending in the first direction so that the first PC material penetrates the joint part Having a plurality of first beam members made of PCaPC embedded in the upper part of
a pair of said first beam members adjacent to each other in said first direction are pressed against each other by a first unbond tendon at an intermediate portion in the longitudinal direction of said first beam;
A cover member is provided on the end surface of the first beam member in the first direction,
A frame structure, wherein a hardening joint filler is filled between the cover members of each pair of the first beam members adjacent to each other in the first direction. a first direction and a plurality of columns spaced apart from each other in a second direction intersecting the first direction; A frame structure comprising a first beam and a plurality of second beams constructed between the joints of each pair of the columns adjacent to each other in the second direction,
a joint portion disposed at an intermediate portion or end portion in the first direction and forming the joint of the column; At least one first beam main body part protruding and forming a part of the first beam, the first beam main body part extending in the first direction so that the first PC material penetrates the joint part Having a plurality of first beam members made of PCaPC embedded in the upper part of
a pair of said first beam members adjacent to each other in said first direction are pressed against each other by a first unbond tendon at an intermediate portion in the longitudinal direction of said first beam;
further comprising a plurality of second beam members made of PCaPC in which a second PC material extending in the second direction and forming the second beam is embedded in the lower portion;
A frame structure, wherein the second beam members are pressed against the joint portions of the pair of first beam members by second unbonded tendons at both ends in the longitudinal direction. A plurality of the second beam members are provided so as to be continuous in the second direction across the joint,
Each pair of said second beam members adjacent to each other in said second direction is pressed against said joint portion of said first beam member by said common second unbond tendon . Structural structure described. Further comprising a plurality of PCa concrete column members forming the main body of the column,
Each pair of the column members vertically adjacent to each other with the joint portion of the first beam member interposed therebetween is pressed against the joint portion of the first beam member by a third unbond tendon. The frame structure according to claim 2 or 3 . The column member has an upper end projection projecting in the second direction from an upper portion of the side surface facing the second direction, and a lower end projection projecting in the second direction from a lower portion of the side surface facing the second direction. have
The third unbond tendon penetrates the second beam member in the vertical direction, and presses the upper end projection of the lower column member and the lower end projection of the upper column member against the second beam member. The frame structure according to claim 4 , characterized by: The first beam member has a connection projection projecting from the connection portion toward the second direction,
The third unbonded tendon penetrates the connection projection in the vertical direction, and presses the upper end projection of the lower column member and the lower end projection of the upper column member against the connection projection. The frame structure according to claim 5 . A building comprising the frame structure according to any one of claims 4 to 6 and a plurality of interior units arranged inside the frame structure,
the plurality of first beam members, the plurality of second beam members, and the plurality of column members are separable from each other;
A building, wherein a plurality of said interior units are configured to be installable and removable with respect to said frame structure. a first direction and a plurality of columns spaced apart from each other in a second direction intersecting the first direction; A frame structure comprising a first beam and a plurality of second beams constructed between the joints of each pair of the columns adjacent to each other in the second direction,
a joint portion disposed at an intermediate portion or end portion in the first direction and forming the joint of the column; The first beam end has at least one first beam end that protrudes and forms an end of the first beam, and the first PC material extending in the first direction penetrates the joint. A plurality of connection members made of PCaPC embedded in the upper part of the
A plurality of intermediate beam members forming an intermediate portion of the first beam,
The joint member and the intermediate beam member adjacent to each other in the first direction are pressed against each other by a first unbonded tendon,
A cover member is provided on the end surface of the joint member in the first direction,
A frame structure, wherein a hardening joint material is filled between the cover member and the intermediate beam member of the joint member adjacent to each other in the first direction. The joint member has two first beam ends extending in both of the first directions from the joint,
The first unbonded tendon is disposed through the joint portion and over the entire length of the joint member in the first direction, and the two beams adjacent to both sides of the joint member in the first direction. 9. The frame structure according to claim 8 , wherein the intermediate member is pressed against both end surfaces of the joint member. a plurality of said joint members further having a pillar main body portion forming a main body portion of said corresponding pillar;
10. The frame structure according to claim 8 or 9 , wherein each pair of said joint members adjacent to each other in the vertical direction are pressed against each other by a third unbonded tendon. A building comprising the frame structure according to any one of claims 8 to 10 and a plurality of interior units arranged inside the frame structure,
The frame structure further includes a plurality of second beam members made of PCaPC in which a second PC member extending in the second direction is embedded in the lower part, the second beam member forming the second beam, and the second beam member being longitudinal Both ends in the direction are pressed against the joint portions of the pair of joint members by second unbonded prestressing tendons,
a plurality of the joint members, a plurality of the intermediate beam members, and a plurality of the second beam members are separable from each other;
A building, wherein a plurality of said interior units are configured to be installable and removable with respect to said frame structure.

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