JP2019138053A - Skeleton earthquake-resistant building, construction method of skeleton earthquake-resistant building and renewal method - Google Patents

Abstract

To provide a skeleton earthquake-resistant building, a construction method of skeleton earthquake-resistant building and a renewal method which facilitate improvement of earthquake performance after construction completion and renewal of construction members after earthquake or fire disaster.SOLUTION: A skeleton earthquake-resistant building is configured to be provided with: a skeleton structure 12 made of fireproof members as a building skeleton having minimum required load performance to support vertical load; and functioning components 14 (20) separatably arranged on the skeleton structure 12 and designated to be broken prior to the skeleton structure 12 when predetermined lateral load is applied to a building 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a skeleton seismic building, a skeleton seismic building construction method, and a renewal method.

  Conventionally, a cross laminated plate (CLT) called CLT is known. The CLT includes a board or a small square material (including those prepared by bonding and bonding them in the length direction so that their fiber directions are substantially parallel to each other, hereinafter referred to as lamina). This is a wooden board material that is laminated and bonded in the width direction in parallel or bonded, with the fiber direction almost perpendicular to each other and laminated and has a structure of three or more layers, and has the feature of high earthquake resistance and heat insulation performance. is there. The CLT seismic wall that uses this CLT as a wall body is required by a notification etc. to secure the performance as a seismic wall by tightly connecting the CLT seismic wall on the upper and lower floors with hardware via a floor slab made of CLT. Has been.

  Regarding the earthquake-resistant wall using the CLT as a wall, the applicant of the present application has already proposed a wooden earthquake-resistant wall as shown in Patent Documents 1 to 3. For example, in the wooden earthquake-resistant wall described in Patent Document 2, the upper end and the lower end of a wall made of CLT are respectively joined to an upper beam and a lower beam made of steel frame or reinforced concrete via a beam joint. The beam joint is fixed to the upper beam or the lower beam, protrudes toward the wall, and projects from the upper or lower end of the wall toward the upper or lower beam and into the wall. Including a steel plate on the inner side of the wall body to be inserted, a bolt for joining these steel plates, and a steel plate on the end surface side that is disposed on the upper or lower end surface of the wall body and is joined to the steel plate on the inner side of the wall body Composed.

Japanese Patent Application No. 2006-218824 (unpublished at present) Japanese Patent Application No. 2017-091017 (not yet disclosed) Japanese Patent Application No. 2017-210887 (unpublished at present)

  By the way, generally, the structural performance of a multi-level building is determined at the time of design. For this reason, in order to improve the earthquake resistance of the building after completion, there is only a method such as seismic reinforcement, which may greatly affect the usability and appearance of the building. In addition, when a structural member is damaged due to an earthquake or a fire, the member is repaired according to the time of the new construction, so there is a possibility that temporary facilities such as temporary receiving of a load become large.

  For this reason, there has been a demand for an earthquake-resistant building that not only makes it easy to change the plan, but also improves the earthquake-resistant performance of the building after completion, and allows the structural members to be easily updated after an earthquake or fire.

  The present invention has been made in view of the above, and is a skeleton seismic building that can easily improve the seismic performance after completion of construction, or can easily update a structural member after an earthquake or fire, and a construction method and a renewal method of the skeleton seismic building The purpose is to provide.

  In order to solve the above-described problems and achieve the object, the skeleton seismic building according to the present invention is composed of a refractory member and has a skeleton structure as a building frame having a minimum load-bearing performance necessary to support a vertical load. And a performance member that is detachably provided in the skeleton structure and breaks prior to the skeleton structure when a predetermined horizontal load acts on the building.

  Another skeleton seismic building according to the present invention is the ceiling according to the above-described invention, wherein the performance member has at least one of seismic performance, sound insulation performance, anti-vibration performance, and heat insulation performance that bears a horizontal load acting on the building. It is characterized by being a wall or a floor.

  Another skeleton seismic building according to the present invention is characterized in that, in the above-described invention, the performance member is a member having CLT.

  Another skeleton seismic building according to the present invention is characterized in that, in the above-described invention, the performance member can be added, changed, removed or replaced with respect to the skeleton structure after the building is completed.

  Moreover, the construction method of the skeleton seismic building according to the present invention is a method of constructing the skeleton seismic building described above, and after the skeleton structure is constructed, a performance member is attached to the skeleton structure.

  The skeleton seismic building update method according to the present invention is a method of updating the skeleton earthquake resistant building described above, and after the building is completed, performance members are added, changed, removed or exchanged to the skeleton structure. The performance is adjustable.

  According to the skeleton seismic building according to the present invention, the skeleton structure as a building frame, which is made of a fireproof member and has a minimum load bearing performance necessary to support a vertical load, and the skeleton structure are provided so as to be separable. When a predetermined horizontal load is applied to the building, it is provided with a performance member that breaks (absorbs stress) prior to the skeleton structure, so that the performance member can be easily updated after completion. In addition, after an earthquake or fire, the performance member (structural member) is destroyed or burnt down, and the skeleton structure is not damaged. Therefore, there is an effect that it is easy to improve the seismic performance after completion or to update the structural member after an earthquake or fire.

  According to another skeleton seismic building according to the present invention, the performance member has a ceiling, a wall or at least one of seismic performance, sound insulation performance, vibration insulation performance, and heat insulation performance that bears a horizontal load acting on the building. Since it is a floor, it has the effect of improving the seismic performance by adding or changing walls after completion, or replacing a damaged wall or floor (ceiling) after an earthquake or fire with a new member.

  Further, according to another skeleton seismic building according to the present invention, since the performance member is a member having CLT, the weight of the performance member, simplification of the design, shortening of the construction period, and the earthquake resistance performance, There is an effect that fire resistance and construction performance can be improved.

  Further, according to another skeleton seismic building according to the present invention, the performance member can be added, changed, removed or replaced with respect to the skeleton structure after the completion of the building. And there is an effect that it becomes easy to update the performance member after a fire.

  Further, according to the construction method of the skeleton earthquake-resistant building according to the present invention, it is a method of constructing the skeleton earthquake-resistant building described above, and after the skeleton structure is constructed, the performance member is attached to the skeleton structure, so that the workability is excellent. There is an effect.

  Further, according to the update method of the skeleton earthquake-resistant building according to the present invention, it is a method of updating the skeleton earthquake-resistant building described above, and the performance member is added, changed, removed or replaced to the skeleton structure after the building is completed. Since the performance of the building can be adjusted, it is possible to improve the seismic performance after the completion of construction or to easily update the performance members after an earthquake or fire.

FIG. 1 is an exploded perspective view showing a concept of an embodiment of a skeleton seismic building according to the present invention. FIG. 2 is an enlarged view in which a part of FIG. 1 is extracted. FIG. 3 is a cross-sectional perspective view of the skeleton seismic building according to the present invention. FIG. 4 is a schematic external view of a skeleton earthquake-resistant building according to the present invention. FIG. 5 is a diagram showing an example of variations of the CLT shear wall. (1) is type 1, (2) is type 2, (3) is type 3, and (4) is type 4. FIG. 6 is a side cross-sectional view showing an example of a synthetic floor in which CLT is used both as a mold and for finishing. FIG. 7 is a diagram illustrating an example of a joint portion of a CLT earthquake resistant wall, where (1) is a front sectional view and (2) is a sectional view taken along line AA in (1). FIG. 8 is a diagram illustrating an example of a method of attaching the joint portion, where (1) is procedure 1, (2) is procedure 2, and (3) is procedure 3. FIG. 9 is a cross-sectional view of the living space, where (1) is an example of the present invention and (2) is a comparative example. FIG. 10 is a diagram showing an example of a building update method according to the present invention, where (1) is a normal time, (2) is after a fire, and (3) is an update time.

  EMBODIMENT OF THE INVENTION Below, embodiment of the construction method and update method of a skeleton earthquake-resistant building which concerns on this invention, and a skeleton earthquake-resistant building is described in detail based on drawing. Note that the present invention is not limited to the embodiments.

[Skeleton earthquake-resistant building]
First, an embodiment of a skeleton seismic building according to the present invention will be described.

  As shown in FIGS. 1 and 2, the skeleton seismic building 10 according to the present embodiment includes a skeleton structure 12 as a building frame having a minimum load resistance performance and a predetermined fire resistance performance necessary for supporting a vertical load. , A hybrid structure that clearly separates the performance member 14 that is responsible for improving resistance to horizontal forces such as earthquakes and storms (seismic performance), anti-vibration performance, sound insulation performance, and heat insulation performance of the floor. It is. The skeleton earthquake resistant building 10 is applied to a multi-level building such as a middle-rise apartment.

  As shown in FIGS. 2 and 3, the skeleton structure 12 is composed of a minimum refractory member that supports a vertical load, and includes a floor and a pillar that form an interlayer section. More specifically, the skeleton structure 12 has a fireproof performance, RC (reinforced concrete) flat slab 16 which is a floor having a minimum thickness for supporting a floor load of each floor, and mainly a vertical load. It consists of a plurality of thin steel pipe columns 18 that are supported and applied with fireproof paint. Note that the skeleton structure 12 can normally stand as a building frame without the performance member 14 at a normal time, but has such rigidity that the skeleton structure 12 alone cannot resist the horizontal force when a horizontal force acts during an earthquake. .

  The performance member 14 is a member responsible for earthquake resistance, sound insulation, heat insulation, vibration isolation, and the like, and includes a wall, a floor, and a ceiling that can be added to or changed from the skeleton structure 12 after completion. More specifically, the performance member 14 includes a floor (ceiling) made of a CLT earthquake-resistant wall 20 having a seismic performance that resists horizontal force and a CLT 22 having a sound insulation / vibration / heat insulation performance. The CLT seismic wall 20 and CLT 22 are structured to be detachable from the skeleton structure 12 as will be described later.

  The floor and ceiling are constituted by a CLT composite floor 24. The CLT composite floor 24 is a composite floor that is also used as a formwork, using the CLT 22 as a formwork of the RC flat slab 16 (skeleton structure) and also as a finish. Since this CLT synthetic floor 24 expects only rigidity, a fireproof coating is unnecessary, and the CLT material can be utilized as it is on the ceiling.

  Even if the CLT part of the CLT composite floor 24 disappears or is damaged during a fire, the RC flat slab 16 part remains, so the RC flat slab 16 and the new CLT floor can be connected in some way to add sound insulation and vibration isolation performance. Restoration is possible by enabling stress transmission to both the mouth and top. Similarly, even if the CLT floor having a high performance (thickness increase or the like) is replaced, the above-described stress transmission can be performed, so that the performance can be improved.

  As shown in FIG. 3, a heat insulating CLT 26 is provided on the upper surface of the CLT composite floor 24. Further, a sash 28 (having fireproofing and heat insulating performance as required) is provided on the outer wall side. You may make it utilize the division wall by a dry construction method partially for a fire prevention division.

  In the present embodiment, a design concept is adopted in which the CLT of the CLT seismic wall 20 is damaged prior to the skeleton structure 12 when a predetermined horizontal load acts on the building. Therefore, even if the CLT of the CLT seismic wall 20 or the CLT composite floor 24 is damaged during a large earthquake or the like, the base skeleton structure 12 is not damaged. Based on this design philosophy, by efficiently using CLT as a performance member, it is possible to realize a skeleton seismic building 10 in which the entire building is lightened.

  In addition, the fire resistance performance of CLT is lower than that of the skeleton structure 12. For this reason, the skeleton structure 12 that supports the vertical load remains in a healthy state even when the CLT of the CLT seismic wall 20 or the CLT composite floor 24 is burned down in the event of a fire or damaged during a large earthquake. For this reason, the original performance can be secured by replacing the CLT of the CLT seismic wall 20 or the CLT composite floor 24 with a new member.

  In FIG. 4, an example of the external appearance of the skeleton earthquake-resistant building 10 of this Embodiment is shown. In the present embodiment, it is assumed that the building has six floors above ground and a height of about 21 m (reference floor height 3.25 m), but the present invention is not limited to this. Further, the RC flat slab 16 has a thickness of about 160 mm, the steel pipe fine column 18 has a diameter of about 180 mm, the CLT composite floor 24 has a thickness of about 300 mm, the CLT seismic wall 20 has a width of about 900 to 1800 mm, and a thickness of about 200 to 300 mm. However, the present invention is not limited to this.

  The skeleton seismic building 10 of the present embodiment has an effect that it is easy to make, easy to live, and easy to update. These effects will be specifically described below.

<1. Easy to make>
Lightweight CLT with various standardized performances simplifies design, shortens construction period, and improves workability.

(1-1. CLT seismic walls manufactured and standardized in factories)
FIG. 5 shows an example of a variation of the CLT earthquake resistant wall 20 of the present embodiment. As shown in this figure, each CLT earthquake-resistant wall 20 is a rectangular plate-like wall body made of CLT, and mounting hardware 30 with a beam is arranged at four places on the top, bottom, left, and right. The fiber direction of CLT is the direction in the vertical plane. The width of the CLT seismic wall 20 is standardized to, for example, about W1 = 900, W2 = 1350, W3 = 1800 mm, and several types of members with standardized wall thicknesses of about t1 = 210 mm and t2 = 300 mm are prepared. If the number of sheets satisfying the seismic performance is arranged in a balanced manner, the design can be simplified. Since the CLT seismic wall 20 can also be used as a finishing material, the construction can be shortened by reducing the fireproof coating and finishing process.

  Note that type 1 in FIG. 5 (1) is grade Mx60-7-7, type 2 in FIG. 5 (2) is grade Mx60-7-7, type 3 in FIG. 5 (3) is grade Mx60-7-7, In type 4 (CLT steel plate shear wall) of FIG. 5 (4), a thin built-in steel plate 32 (for example, about 6 mm thick) is inserted and arranged in the center of the wall thickness direction of CLT 22 and connected in the wall thickness direction with a bolt (not shown). It is grade Mx60-5-5.

(1-2. CLT composite floor that uses CLT as a mold and finish)
As shown in FIG. 6, the CLT composite floor 24 of the present embodiment includes an RC flat slab 16 and a CLT 22 attached to this lower surface. The fiber direction of the CLT 22 is a direction in a horizontal plane. On the lower surface of the RC flat slab 16, a girder 34 is projected at a predetermined interval. The CLT seismic wall 20 and the steel pipe thin column 18 can be connected to the girder 34. A small edge shear cotter 36 is provided on the side surface of the beam 34. A synthetic floor is formed by performing shear transmission between the CLT 22 and the RC flat slab 16. Since CLT serves both as a formwork and a finishing material, it is possible to omit formwork removal during RC construction. Since CLT expects only rigidity, no fireproof coating is required, and finishing using the material is possible. In addition, the construction period will be shortened by reducing the formwork waste processing and finishing processes, which will contribute to the reduction of work labor and carbon dioxide by replacing the South Sea material formwork with domestic timber. In FIG. 6, it is assumed that L = 3600 mm, t3 = 160 mm, and t4 = 150 mm. CLT is grade Mx60-5-5. In addition, since CLT does not expect proof stress, CLT using the wood with lower strength can also be used.

(1-3. Standardized simple joint)
(A) Detail of Joint As shown in FIG. 7, the CLT earthquake resistant wall 20 can be easily connected and detached by a cap nut 38 and a bolt embedded in advance in the girder 34 of the RC flat slab 16. Since this joint 40 has standardized details, it is excellent in workability.

  The joint portion 40 will be described more specifically. As shown in FIG. 7, the CLT seismic wall 20 is joined to the girder 34 at the upper end and to the RC flat slab 16 at the upper end via attachment hardware 30 at the upper, lower, left and right corners. Since the upper, lower, left, and right joints 40 have the same structure, the upper joint 40 will be described below as an example. The joint 40 includes a cap nut 38 embedded in the girder 34, a T-shaped hardware 44 fastened and fixed to the cap nut 38 with a high-strength bolt 42, and a mounting hardware 30 fixed to the upper end surface of the CLT earthquake resistant wall 20. It consists of. The attachment hardware 30 includes a base 46 and a plate 48 that protrudes upward from the base 46 and is inserted and arranged in the wall. The plate 48 is disposed at the center in the wall thickness direction. The plate 50 projecting downward from the T-shaped hardware 44 and the plate 48 of the mounting hardware 30 are fixed by bolts 52 with their end portions overlapped in the front-rear direction.

  The CLT seismic wall 20 and the plate 48 are provided with a plurality of horizontal through holes in lattice points at corresponding positions, and a drift pin 54 is passed through each hole. The drift pin 54 integrally fixes the CLT and the plate 48. The drift pin 54 is for resistance to shearing, and is, for example, a specification that breaks in a yield mode in which yielding occurs in itself. The drift pin 54 is capable of tough fracture and increases the toughness of the wall body. Screws or the like can be further added to reinforce the split.

  The base 46 on the upper end surface of the CLT seismic wall 20 is provided with a plurality of through holes, and LSBs 56 (lag screw bolts) for resistance to tension are inserted from the through holes toward the inside of the CLT. Yes. The LSB 56 is made of a steel rod having a male thread on the outer periphery. An opening (not shown) is formed in the upper end portion of the LSB 56, and a female screw is machined on the inner peripheral surface of the hollow hole communicating with the opening. The CLT and the base 46 are fixed integrally by screwing them into the CLT so that the opening of the LSB 56 is exposed at the upper end surface of the CLT, and screwing the bolts into the female screws of the LSB 56 from the through holes of the base 46. Is done. The LSB 56 is preferably inserted in a direction (fiber orthogonal layer) perpendicular to the fiber direction of the CLT, and is also arranged in this embodiment. Thereby, compared with the case where the LSB 56 is inserted and arranged in the fiber direction, the deformation at the maximum proof stress can be increased, and the simultaneity with the demonstration of the proof stress of the drift pin 54 can be realized. For this reason, the yield strength of the CLT seismic wall 20 can be further increased.

  The LSB 56 and the drift pin 54 are alternately arranged adjacent to each other. By doing so, it is possible to increase the strength and toughness by delaying the split fracture of the CLT by the restraining effects of the LSB 56 and the drift pin 54.

  Thus, in the present embodiment, the LSB and the drift pin are independently used in series at the junction 40. For this reason, although it is the combination of LSB and a drift pin used normally, the CLT earthquake-resistant wall excellent in all of rigidity, toughness, and proof stress is realizable by the synergistic effect, and it can fully be expected as an earthquake-resistant element of middle-high-rise wooden structure. Further, by installing the joint portions 40 at the four corners on the top, bottom, left, and right of the CLT, the axial force due to the shear force and the additional bending moment couple can be processed. This stress transmission mechanism is the same regardless of the thickness and width of the CLT seismic wall 20, and it is possible to always realize a general-purpose design and accommodation using this detail regardless of the proportion.

(B) Simple attachment method of joint part The joint part 40 can be easily joined only with a bolt. An example of a procedure for attaching the joint 40 will be described. As shown in FIG. 8A, first, only a necessary portion of the finished CLT 22 under the girder 34 of the CLT composite floor 24 is peeled off. Subsequently, as shown in (2), a T-shaped hardware 44 is attached to a cap nut 38 previously charged in the girder 34 with a high-strength bolt 42. Next, as shown in (3), the end portions of the plate 50 of the T-shaped hardware 44 and the plate 48 of the mounting hardware 30 attached in advance to the upper end surface of the CLT are overlapped and joined with a bolt 52. Thereafter, a woody finishing material 58 such as CLT is installed on the side of the joint 40. In addition, what is necessary is just to perform by the procedure contrary to the above, when removing the CLT earthquake-resistant wall 20 from the girder 34 after completion.

  Instead of providing the cap nut 38 in advance on the girder 34 as described above, the CLT seismic wall 20 may be joined to the girder 34 using a through bolt. In this case, through bolts that pass through the girder 34 up and down may be provided in advance, and the CLT earthquake resistant wall 20 may be joined to the upper and lower ends of the through bolts.

(1-4. Shortening of process)
Since the skeleton structure 12 is composed of thin steel pipe thin columns 18 and thin RC flat slabs 16, it is possible to reduce concrete placement and reinforcement. The performance member 14 made of CLT has been reduced in weight and unitized so that it can be installed on small construction machines, and it is also used as a seismic wall, formwork, finishing material, etc., reducing fireproof coating and finishing processes. As a whole, the construction period can be shortened.

<2. Easy to live>
In this embodiment, since the pillars are thin and not beam-shaped, it becomes a space with a feeling of openness (planning for opening parts other than pillars and housings), and furthermore, a living space with high sound insulation and heat insulation performance is enabled by CLT. .

(2-1. Living space with a sense of openness made possible by CLT and steel pipe thin columns)
Since all the pillars of the skeleton structure 12 are steel pipe narrow pillars 18 (for example, the diameter of the steel pipe is about φ180 mm) which is made thin as much as possible, it can be made into a highly open room together with the fireproof and heat insulating sash 28 on the outer wall. The CLT seismic wall 20 which is the performance member 14 and the CLT 22 which is also used as the form of the RC flat slab 16 do not support a vertical load, so that a fireproof coating is not required, and finishing as a wall or ceiling utilizing the material is possible. It is assumed that the outer walls have fireproof insulation performance by sash / ALC, etc., the partition between the dwellings is based on the use of a dry soundproof fireproof wall, and the interior wooden parts are incombustible.

(2-2. Living space that secures the target floor sound insulation performance)
The CLT synthetic floor 24 of the present embodiment can ensure the sound insulation performance of the floor by integrating the CLT 22 and the RC flat slab 16 and increasing the rigidity. It is possible to obtain higher sound insulation performance by adjusting the thickness of the CLT 22. Since the CLT 22 on the ceiling side has a minimum thickness, no illumination or the like is provided, and it is assumed that the upper part of the CLT seismic wall 20, the lower part of the girder 34 and the inside of the sash 28 are used for the installation of the illumination and the like. Sprinklers and sensors can be accommodated by installing them under the beam 34. Note that the CLT composite floor 24 can be set to a desired thickness and detail by numerical analysis and experiments of sound insulation performance in advance.

(2-3. Living space with high thermal insulation performance)
According to the present embodiment, it is possible to realize a house having high heat insulation performance by using CLT having a heat insulation effect on the ceiling, walls, and floor. FIG. 9 is a cross-sectional view of the living space, where (1) is an example of the present invention and (2) is a comparative example (general RC apartment). In the figure, reference numeral 60 denotes LED line illumination, reference numeral 62 denotes a shoji, reference numeral 64 denotes a total heat exchanger, reference numeral 66 denotes a wall-mounted air conditioner, and reference numeral 68 denotes foamed urethane (thickness 50 mm). For the living space as shown in this figure, the average heat transmissivity of the outer skin excluding the opening was calculated using the building energy saving method calculation support program “outer performance calculation program”. The embodiment of the present invention was 0.50 W. / (M ² · K), and the comparative example was 0.97 W / (m ² · K). For this reason, the present Example can be expected to improve the thermal insulation performance about twice as much as that of a general RC apartment. By adopting an air conditioning system that manages the entire dwelling unit including the heat exchanger, it is possible to create a living environment that takes into account energy conservation and the health of the elderly and small children.

<3. Easy to update>
In this embodiment, the skeleton structure is left as it is, and it is possible to cope with future performance improvements and changes by updating the CLT.

  As shown in FIG. 10A, the present embodiment is a building in which the skeleton structure 12 having fire resistance and the CLT as the performance member 14 are clearly separated. For this reason, as shown in FIG. 10 (2), the skeleton structure 12 that supports the vertical load remains in a healthy state even when the performance member 14 such as the CLT earthquake-resistant wall 20 is burned down in the event of a fire or damaged in the event of a large earthquake. . For this reason, as shown in FIG. 10 (3), the initial performance can be ensured by replacing the performance member 14 such as the CLT earthquake resistant wall 20 with a new member. Since the CLT is lightweight, it is easy to transport new members at the time of renewal. For this reason, changes in performance members 14 such as CLT can be flexibly dealt with changes in needs expected in the future, such as improvement of seismic performance due to plan changes or legal revisions.

<4. Summary>
As described above, according to the present embodiment, the performance members 14 such as the CLT seismic wall 20 and the CLT 22 of the CLT composite floor 24 can be easily updated after completion. Therefore, it becomes easy to improve the seismic performance after completion, or to update the performance member 14 after an earthquake or fire.

  Further, the seismic performance can be freely controlled by adjusting the amount and position of the CLT seismic wall 20 which is the performance member 14. It is possible to improve the seismic performance to a legal level by adding or changing the CLT seismic wall 20 even for future legal revisions. Further, even when the performance member 14 such as the CLT earthquake resistant wall 20 is destroyed or burnt down due to an earthquake or a fire, the minimum skeleton structure 12 that bears the vertical load support performance and the fire resistance performance is not damaged. Since the skeleton structure 12 remains after an earthquake or fire, the performance can be maintained by replacing the CLT seismic wall 20 as the performance member 14 with a new member. Similarly, the vibration-proof performance and sound-insulation performance of the floor can be easily controlled by adjusting the thickness of the CLT 22 to be used.

  Further, by using CLT for the performance member 14, the performance member 14 can be reduced in weight, simplified in design, improved in material transportability, shortened construction period, and improved in earthquake resistance performance, fire resistance performance, and construction performance. be able to.

  The above embodiment makes the most of the advantages of CLT in order to realize a building that actively uses CLT. In addition to realizing the use of CLT, having high workability, habitability, and renewability can lead to the solution of environmental problems and labor shortages in the construction industry. Furthermore, it is possible to expand to efficiency in each phase of design, construction, and renewal by sharing, reducing weight, and rationalizing.

  In addition, the above-described embodiment can be updated in a small site without using a large construction machine due to the reduction in size and weight of the members and the unitization. In addition, it also has a function to update / change the structural performance, and can respond to future changes in seismic performance standards. As well as contributing to the long life of the building, it is possible to construct a housing complex with improved living performance and workability as a good-quality housing stock in the city.

  In the above embodiment, the case where the member made of CLT is used as an example of the performance member 14 added to the skeleton structure 16 has been described. However, the performance member of the present invention is not limited to CLT, and another seismic element. It is also possible to use. As this seismic element, it is possible to use, for example, a wood material having a certain rigidity, a plate material made of other materials, a brace-shaped wire, a composite material combining these materials, and the like.

[How to build a skeleton earthquake resistant building]
Next, an embodiment of a construction method for a skeleton earthquake-resistant building according to the present invention will be described.

  The skeleton seismic building construction method according to the present embodiment is a method of constructing the skeleton seismic building 10 described above. After the skeleton structure 12 is constructed (or simultaneously), the skeleton structure 12 is subjected to the CLT seismic wall 20 or A performance member 14 such as CLT 22 is attached. For this reason, according to this Embodiment, it is excellent in workability.

[Renewal method of skeleton seismic building]
Next, an embodiment of a method for updating a skeleton seismic building according to the present invention will be described.

  The update method of the skeleton earthquake resistant building according to the present embodiment is a method of updating the skeleton earthquake resistant building described above, and after the completion of the skeleton earthquake resistant building 10, the performance member 14 such as the CLT earthquake resistant wall 20 or the CLT 22 is added, changed, The performance of the skeleton seismic building 10 can be adjusted by removing or replacing it. For this reason, it becomes easy to improve seismic performance after completion, or to update the performance members 14 such as the CLT seismic wall 20 and CLT 22 after an earthquake or fire.

  As described above, according to the skeleton seismic building according to the present invention, the skeleton structure as a building frame which is made of a fireproof member and has the minimum load bearing performance necessary to support the vertical load, and the skeleton structure Since the performance member is provided so as to be separable and breaks prior to the skeleton structure when a predetermined horizontal load acts on the building, the performance member can be easily updated after completion. In addition, after an earthquake or fire, the performance member (structural member) is destroyed or burnt down, and the skeleton structure is not damaged. Therefore, it becomes easy to improve the seismic performance after completion, or to update the structural member after an earthquake or fire.

  According to another skeleton seismic building according to the present invention, the performance member has a ceiling, a wall or at least one of seismic performance, sound insulation performance, vibration insulation performance, and heat insulation performance that bears a horizontal load acting on the building. Since it is a floor, it is easy to add or change walls after completion to improve earthquake resistance, or to replace a damaged wall or floor (ceiling) after an earthquake or fire with a new member.

  Further, according to another skeleton seismic building according to the present invention, since the performance member is a member having CLT, the weight of the performance member, simplification of the design, shortening of the construction period, and the earthquake resistance performance, Fire resistance and construction performance can be improved.

  Further, according to another skeleton seismic building according to the present invention, the performance member can be added, changed, removed or replaced with respect to the skeleton structure after the completion of the building. It becomes easy to update performance members after a fire.

  Further, according to the construction method of the skeleton earthquake-resistant building according to the present invention, it is a method of constructing the skeleton earthquake-resistant building described above, and after the skeleton structure is constructed, the performance member is attached to the skeleton structure, so that the workability is excellent. .

  Further, according to the update method of the skeleton earthquake-resistant building according to the present invention, it is a method of updating the skeleton earthquake-resistant building described above, and the performance member is added, changed, removed or replaced to the skeleton structure after the building is completed. Since the performance of the building can be adjusted, it is easy to improve the seismic performance after completion, or to update the performance members after an earthquake or fire.

  As described above, the skeleton seismic building according to the present invention, the construction method and the updating method of the skeleton seismic building are useful for multi-story apartment buildings, and in particular, improve the seismic performance after completion, or after an earthquake or fire It is suitable for making the structural member updatable.

10 Skeleton earthquake resistant building 12 Skeleton structure 14 Performance member 16 RC flat slab (skeleton structure)
18 Steel pipe column (skeleton structure)
20 CLT shear wall (performance member)
22 CLT (performance member)
24 CLT composite floor 26 CLT for heat insulation (performance member)
28 Sash 30 Mounting hardware 32 Built-in steel plate 34 Girder beam 36 Small opening shear cotter 38 Cap nut 40 Joint 42 High strength bolt 44 T-shaped hardware 46 Base 48, 50 Plate 52 Bolt 54 Drift pin 56 LSB
58 Finishing material

Claims (6)

  A skeleton structure as a building frame that consists of refractory members and has the minimum load-bearing performance necessary to support a vertical load, and a skeleton structure that can be separated into the skeleton structure, and when a predetermined horizontal load acts on the building, A skeleton earthquake-resistant building comprising a performance member that breaks prior to the structure.   The skeleton according to claim 1, wherein the performance member is a ceiling, a wall, or a floor having at least one of seismic performance, sound insulation performance, vibration insulation performance, and heat insulation performance that bears a horizontal load acting on the building. Seismic building.   The skeleton earthquake-resistant building according to claim 1, wherein the performance member is a member having CLT.   The skeleton seismic building according to any one of claims 1 to 3, wherein the performance member can be added, changed, removed or replaced with respect to the skeleton structure after completion of the building. A method of constructing a skeleton seismic building according to any one of claims 1 to 4,
A construction method for a skeleton earthquake-resistant building, wherein a performance member is attached to the skeleton structure after the skeleton structure is constructed. A method for updating a skeleton seismic building according to any one of claims 1 to 4,
A method for renewing a skeleton seismic building characterized in that the performance of a building can be adjusted by adding, changing, removing or replacing performance members to the skeleton structure after completion of the building.

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