JP6615083B2 - Seismic and damping control method - Google Patents

Description

  The present invention relates to an earthquake-resistant and vibration-damping / reinforcing method for an apartment house. Note that “vibration suppression” means reducing the vibration of buildings due to earthquakes and winds, and may be described as “vibration suppression” in addition to “vibration suppression”. And "damping".

  Traditionally, buildings have been earthquake-resistant and vibration-damping reinforcement structures. Such a reinforcing structure is applied not only to a new building but also to an existing building as a seismic reinforcement. Seismic reinforcement varies depending on the type of building. When it is difficult to reinforce indoors, there are cases where a reinforcing member such as a reinforcing frame is provided outside the building.

  As an earthquake-proof reinforcement in which a reinforcing member is provided on the outside of a building, for example, there is an earthquake-proof reinforcement structure described in Patent Document 1 below. According to this seismic reinforcement structure, the reinforcing beams and columns are joined around the window avoiding the front of the building window as much as possible, so even after construction, lighting and ventilation through the window. And the influence on the living environment such as the view can be suppressed.

JP 2008-127856 A

  In general, seismic reinforcement is applied to the construction surface on the veranda or balcony side of the building, so that the living environment through the window may change after the construction. On the other hand, especially in the case of apartment houses, if earthquake-proof reinforcement is performed on the shared corridor side, it is difficult to ensure the safety of the residents who pass through the shared corridor during the construction.

  The present invention has been proposed in view of the above circumstances. In other words, the object is to provide an earthquake-resistant and vibration-damping reinforcement construction method that can ensure the safety of residents and that does not affect the lighting, ventilation, and view through the windows even after construction.

  In order to achieve the above object, an earthquake-resistant and vibration-damping / reinforcing method according to the present invention is a seismic and vibration-damping / reinforcing method for reinforcing a slab by attaching a slab to the slab and reinforcing the apartment house. A temporary passage assembly procedure for assembling a temporary passage outside the shared corridor of the apartment house, a handrail removal procedure for cutting and removing a portion of the shared corridor facing the entrance of the house, and the entrance And a temporary passage procedure for passing a communication passage between the temporary passage and the passage, the communication passage and the temporary passage as flow lines, and the slab is provided on the shared corridor side after the temporary passage procedure. It goes through a slab construction procedure.

  The earthquake-resistant and vibration-damping / reinforcing construction method according to the present invention is characterized by including a protective fence installation procedure for surrounding the entrance door with a protective fence.

  The earthquake-resistant and vibration-damping / reinforcing construction method according to the present invention is characterized in that a work space is provided between the protective fences of the adjacent entrances.

  The earthquake-resistant and vibration-damping / reinforcing construction method according to the present invention is characterized in that the slab is cast-in-place concrete, precast concrete or steel horizontal brace.

  The earthquake-resistant and vibration-damping reinforcement construction method according to the present invention has the above-described configuration. That is, since the communication passage and the temporary passage provided outside the common hall become the temporary common passage during the construction period, the entrance, the communication passage, and the temporary passage serve as a flow line for the residents. Therefore, the safety of residents can be ensured. In addition, since the reinforcement frame is provided on the shared corridor side of the apartment house, the lighting, ventilation and view through the window are not affected on the veranda side.

  The earthquake-proof and vibration-damping / reinforcing method according to the present invention includes a protective fence installation procedure in which a door is surrounded by a protective fence. In other words, the safety of residents can be ensured in the flow line from the entrance to the temporary passage by surrounding the upper and left and right sides of the door with the protective fence.

  The earthquake-proof and vibration-damping / reinforcing construction method according to the present invention uses a work space between protective fences of adjacent entrances. That is, in the shared hallway, the inside of the protective fence for each entrance serves as a flow line for residents, while the space between the adjacent protective fences serves as a work space. Therefore, the flow line of the residents and the work space of the workers are separated, and the safety of the residents can be ensured.

  The earthquake-resistant and vibration-damping reinforcement construction method according to the present invention is a cast-in-place concrete slab, a precast concrete slab, or a steel horizontal brace. With this configuration, the slab or the steel horizontal brace plays a role of stress transmission between the building and the reinforcing frame. For example, if the slab is precast concrete, the components placed in advance are assembled, so that the concrete placement work at the construction site is simplified. Therefore, the construction period can be shortened and the construction can be simplified as compared with the case of on-site concrete.

It is a schematic plan view for demonstrating the earthquake resistance and vibration suppression reinforcement construction method which concerns on embodiment of this invention. It is a schematic side sectional view for explaining an earthquake resistance and vibration suppression reinforcement construction method according to an embodiment of the present invention. It is the schematic for demonstrating the handrail removal procedure of the earthquake resistance and the vibration suppression reinforcement construction method which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is for demonstrating the slab construction procedure of the seismic-proof and vibration-damping reinforcement construction method which concerns on embodiment of this invention, (a) (b) (c) Schematic side sectional drawing in case a slab is a cast-in-place concrete It is. BRIEF DESCRIPTION OF THE DRAWINGS It is for slab construction procedure of the seismic resistance and the vibration suppression reinforcement construction method which concerns on embodiment of this invention, (a) (b) is a schematic sectional side view in case a slab is precast concrete. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side cross-sectional view for explaining a slab construction procedure of a seismic and vibration damping reinforcement construction method according to an embodiment of the present invention when the slab is a steel horizontal brace. It is a general | schematic plane enlarged view for demonstrating the slab construction procedure of the earthquake resistance and the vibration suppression reinforcement construction method which concerns on embodiment of this invention. It is a schematic sectional side view for demonstrating the flame | frame joining procedure of the earthquake resistance and vibration suppression reinforcement construction method which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is for demonstrating the flame | frame joining procedure of the earthquake resistance and the vibration suppression reinforcement construction method which concerns on embodiment of this invention, (a) is a schematic plan view in case a slab is cast-in-place concrete, (b) is a slab. (C) is a schematic plan view in case a slab is a steel frame horizontal brace. It is a schematic plan view for demonstrating the flame | frame joining procedure of the earthquake resistance and vibration suppression reinforcement construction method which concerns on embodiment of this invention. It is a schematic side sectional view showing a state in which the earthquake resistance and vibration damping reinforcement method according to the embodiment of the present invention is applied.

  Hereinafter, an earthquake-proof and vibration-damping reinforcement construction method according to an embodiment of the present invention (hereinafter, the earthquake-proof and vibration-damping reinforcement construction method will be referred to as “reinforcement method”) will be described with reference to the drawings. 1 and 2 show a process in which the reinforcement method according to the present embodiment is applied. FIG. 1 is a schematic plan view of the apartment house 1, and FIG. 2 is a schematic side sectional view of the apartment house 1.

  As shown in FIG. 1, the apartment house 1 is a collection of a plurality of houses 4 arranged in parallel via existing pillars 2 and existing beams 3, and the entrance 5 of each house 4 faces the common hallway 6. ing. As shown in FIG. 2, the common hallway 6 is provided with a handrail 8 having a predetermined height at the end of the existing floor slab 7. The reinforcing method according to the present embodiment is to reinforce the apartment house 1 by providing the apartment house 1 with the slab 10 and joining the reinforcement frame 21 (see FIG. 8) to the slab 10. The frame 21 is attached to the outside of the shared corridor 6 of the apartment house 1. The slab 10 is cast-in-place concrete, precast concrete (hereinafter, precast concrete is referred to as “PCa”), or steel horizontal brace. When the slab 10 is PCa, a reinforcing bar 11 (see FIG. 11) is embedded as an out-of-plane reinforcing material. The reinforcing frame 21 is PCa.

  The reinforcement method is realized by at least the following procedure. In other words, the reinforcing method is realized through a base treatment procedure, a foundation work procedure, a temporary passage assembly procedure, a handrail removal procedure, a temporary passage procedure, a protective fence installation procedure, a slab construction procedure, a restoration procedure, and a frame joining procedure in this order.

  In FIG. 1 and FIG. 2, in the ground treatment procedure, in the common corridor 6, after finishing the cornering, the mortar for coating and the tiles for finishing are removed from the existing beam 3 and the existing column 2 to which the slab 10 is joined. , Distract you.

  In the foundation construction procedure, foundation slabs and piles are used according to the ground of the apartment house 1, and a reinforced foundation of cast-in-place concrete is placed corresponding to the existing foundation 24.

  In the temporary passage assembly procedure, the temporary passage 12 is assembled outside the shared corridor 6 of the apartment house 1. The temporary passage 12 is assembled in accordance with the number of floors of the apartment house 1 using, for example, a wedge-type fastening scaffold in addition to a unit-type assembly scaffold.

  In the handrail removal procedure, a portion of the handrail 8 in the shared corridor 6 that faces the entrance 5 of the house 4 (hereinafter, the handrail 8 that faces the entrance 5 of the house 4 is referred to as “face-to-face portion 8a”). Cut and remove. That is, by removing the facing portion 8a of the handrail 8, the front surface of the entrance 5 is released in the common hallway 6 and communicates with the outside.

  Here, the cutting and removal of the handrail 8 will be further described in detail. FIG. 3 shows the state of the handrail 8 constructed by the handrail removal procedure in the reinforcement method.

  As shown in FIG. 3, the handrail 8 has a facing portion 8 a squarely cut from the upper end to the lower portion. For the cutting, for example, a core drill or the like is used, but a crusher or wall sawing may be used. However, a core drill with low noise during cutting is preferable. Moreover, it is preferable that a width | variety is 600 mm or more in the state which cut | disconnected and faced the facing part 8a, for example. The handrail 8 is restored by welding or the like in a later restoration procedure.

  As shown in FIGS. 1 and 2, in the temporary passage procedure, the communication passage 13 is passed between the entrance 5 and the temporary passage 12. That is, the scaffold plate 14 or the like is passed from the facing portion 8a to the temporary passage 12. Both side surfaces of the communication passage 13 are protected by a protective member 15 such as a fence or a net, for example. In addition, between the communication passages 13, for example, a work scaffold 16 is provided at a position corresponding to the height of the handrail 8.

  In the protective fence installation procedure, the protective fence 17 surrounds the door 5 a of the entrance 5. That is, the upper part and the left and right side parts of the door 5a are surrounded by, for example, a net, a plywood, a fence assembled using a steel material, and the like toward the communication passage 13. The protective fence 17 is installed on the handrail 8 through the common hallway 6 from the door 5a.

  Through the above temporary passage assembly procedure, handrail removal procedure, and passage temporary procedure, the entrance 5, the communication passage 13, and the temporary passage 12 become the flow line X of the residents as shown in FIG. On the other hand, in the common hallway 6, the work space A is between the protective fences 17 for each adjacent entrance 5. In this way, the flow line X of the residents and the work space A of the worker are separated.

  Next, the slab construction procedure will be described based on the drawings. 4, 5, 6, and 7 show a process in which a reinforcement method is applied. Here, FIGS. 4 to 6 are schematic side cross-sectional views of the apartment house 1, and FIG. 7 is an enlarged schematic plan view of the apartment house 1.

  In the slab construction procedure, the slab 10 is installed below the existing floor slab 7 in the common hallway 6 as shown in FIGS. If the slab 10 is cast-in-place concrete, as shown in FIG. 4, the concrete is placed on the lower surface of the existing floor slab 7 in the common hallway 6.

  On the other hand, if the slab 10 is PCa, the post-construction anchor 9 for joining the slab 10 is hit to the existing beam 3 and the existing column 2 as shown in FIGS. In addition, a support 19 for supporting the slab 10 is installed. A slide puller 20 is appropriately attached to the support 19. A joining cotter 26 which is a substantially cylindrical steel pipe or a columnar PCa may be used in combination with the post-construction anchor 9 or may be substituted.

  If the slab 10 is a steel horizontal brace, the slab 10 is joined to the existing beam 3 as shown in FIG.

  In this state, the slab 10 is lifted and joined to the existing beam 3 and the existing column 2 via the post-construction anchor 9 or the joining cotter 26. After joining the slabs 10 in parallel on the same floor, a PC steel material (not shown) is inserted into a sheath (not shown) embedded in the slab 10, and the PC steel material penetrates the adjacent slabs 10 and is tensioned. Alternatively, a joining cotter 26 is provided at the end of the slab 10 and a non-shrink mortar is placed. Repeat the above slab construction procedure for each floor.

  In the restoration procedure, as shown in FIG. 2, the removed facing portion 8 a is returned to the original state, the handrail 8 is restored, and the communication passage 13 and the protective fence 17 are removed. The handrail restoration procedure is repeated every time the slab construction procedure on one floor is completed. That is, every time the slab construction procedure is completed, the railing 8 on the floor is restored, and the communication passage 13 and the protective fence 17 are removed, so that the common corridor 6 is released and the traffic flow of the residents is made again.

  Next, a frame joining procedure will be described based on the drawings. 8 and 9 show a process in which the reinforcement method is applied. Here, FIG. 8 is a schematic side sectional view of the apartment house 1, and FIG. 9 is an enlarged schematic plan view of the apartment house.

  In the frame joining procedure, as shown in FIGS. 8 and 9, the slab 10 and the reinforcing frame 21 are joined by the PC steel material 27, the anchor bars, the joining cotter 26, and the like. Thereafter, as a finish, the support 19 supporting the slab 10 is removed and other miscellaneous work is performed.

  Finally, the state after the reinforcement method is applied will be described with reference to the drawings. FIG. 10 shows a state where the slab 10 made of cast-in-place concrete is cast and the reinforcement frame 21 is joined, and FIG. 11 shows a state where the slab 10 of PCa is installed and the reinforcement frame 21 is joined. ing.

  As shown in FIG. 10, the slab 10 made of cast-in-place concrete is placed between the existing beam 3 and the front end 7 a of the existing floor slab 7. The reinforcing frame 21 is joined to the outer surface of the front end portion 7a. The existing floor slab 7 may not have the front end portion 7a (see FIG. 4C). On the other hand, as shown in FIG. 11, in the housing complex 1 in which the reinforcement method is applied, the PCa slab 10 is supported by a receiving portion such as a bracket via the existing beam 3, supported by the reinforcing bar 11, and existing It protrudes outward from the floor slab 7 and is joined to the reinforcing frame 21.

  Next, the effect of this embodiment will be described.

  As described above, according to the present embodiment, in the temporary passage assembly procedure, the temporary passage 12 is assembled outside the shared corridor 6 of the apartment house 1, and in the handrail removal procedure, the facing portion 8 a of the handrail 8 in the shared corridor 6. In the temporary passage procedure, the scaffolding plate 14 is passed from the facing portion 8a to the temporary passage 12. That is, since the communication passage 13 and the temporary passage 12 provided outside the common corridor 6 serve as a temporary common corridor during the construction period, the entrance 5, the communication passage 13, and the temporary passage 12 become the flow line X of the residents. Therefore, the safety of residents can be ensured. Further, since the reinforcing frame 21 is provided on the shared corridor 6 side of the apartment house 1, there is no influence on the lighting, ventilation, and view through the window on the veranda side.

  According to this embodiment, the protection fence installation procedure for surrounding the door 5a of the entrance 5 with the protection fence 17 is included. That is, the upper and left and right side portions of the door 5a are surrounded by the protective fence 17, and the protective fence 17 is installed from the door 5a through the common corridor 6 to the handrail 8, so that the movement from the entrance 5 to the communication passage 13 is performed. In line X, the safety of residents can be ensured.

  According to the present embodiment, in the shared hallway 6, the work space A is between the protective fences 17 for each adjacent entrance 5. Therefore, the flow line X of the resident and the work space A of the worker are separated, and the safety of the resident can be ensured.

  According to this embodiment, the reinforcing bar 11 is embedded in the PCa slab 10, the slab 10 is supported by the receiving portion in the slab construction procedure, and the slab 10 and the reinforcing frame 21 are joined in the frame joining procedure. That is, the slab 10 is supported by the receiving portion, further supported by the reinforcing bar 11, and supported by joining with the reinforcing frame 21. Therefore, a robust reinforcing structure can be realized.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment. The present invention can be modified in various ways without departing from the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Apartment house 2 Existing pillar 3 Existing beam 4 House 5 Entrance 5a Door 6 Shared corridor 7 Existing floor slab 7a Front end 8 Handrail 8a Opposite part 9 Post-construction anchor 10 Slab 11 Reinforcement (out-of-plane reinforcement)
DESCRIPTION OF SYMBOLS 12 Temporary passage 13 Connection passage 14 Scaffolding board 15 Protection member 16 Work scaffolding 17 Guard fence 19 Supporting work 20 Pulling 21 Reinforcement frame 22 Reinforcement pillar 23 Reinforcement beam 24 Existing foundation 26 Joining cotter 27 PC steel A Work space X Flow line

Claims (4)

In the earthquake-resistant and vibration-damping reinforcement construction method in which a slab is provided in the apartment house and a reinforcement frame is joined to the slab to reinforce the apartment house,
A temporary passage assembly procedure for assembling a temporary passage outside the common corridor of the apartment house;
Of the handrails in the shared corridor, a handrail removal procedure for cutting and removing the part facing the entrance of the house;
Passing through a temporary passage procedure for passing a communication passage between the entrance and the temporary passage, the entrance, the communication passage and the temporary passage as a flow line of residents ,
After the passage temporary procedure, through the slab construction procedure to provide the slab on the shared corridor side,
An earthquake-resistant and vibration-damping reinforcement construction method characterized by that. Included a guard fence installation procedure that surrounds the entrance door with a guard fence,
The earthquake-resistant and vibration-damping reinforcement construction method according to claim 1. Work space between the protective fences for each adjacent entrance,
The earthquake-proof and vibration-damping reinforcement construction method according to claim 2. The slab is cast-in-place concrete, precast concrete or steel horizontal brace,
The earthquake-proof and vibration-damping reinforcement construction method according to any one of claims 1 to 3, wherein

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