JP2006328816A - Earthquake resistant structure of wooden house - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a earthquake resistant structure of a wooden house capable of preventing the wooden house lift performance including the foundation from the ground in the case an earthquake occurs. <P>SOLUTION: The earthquake resistant structure comprises a pipe material 2 extended into the ground by passing through the foundation 1 of the wooden house, a core material 3 inserted in the pipe material 2, an anchor section 4 solidified in a state to widen a diameter in the vicinity of the lower end section of the pipe material 2 and a retaining means 5 fixed to the upper end side of the core material 3 and retained to the foundation 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an earthquake-resistant structure of a wooden house that prevents the wooden house from being lifted off the ground together with the foundation during an earthquake.

  In particular, during a direct earthquake, the wooden house often rises from the ground together with the foundation due to the vertical shaking. If the foundation rises from the ground in this way, excessive impact will be applied to the foundation when the raised foundation collides with the ground, the foundation will be destroyed by the impact force, and the wooden house will be devastatingly damaged. Will receive.

  To date, many proposals have been made as earthquake-resistant structures for improving the earthquake resistance of wooden houses (see, for example, Patent Document 1). However, all conventional earthquake-resistant structures of wooden houses are designed to improve the earthquake resistance by firmly connecting the foundations of the wooden houses and the upper structures such as the foundations and pillars to each other. It was not possible to prevent the house from floating with the foundation on the ground.

JP 2001-159192 A

  The present invention was made in view of the above-mentioned difficulties in the conventional earthquake-resistant structure of wooden houses, and is a wooden structure that improves the earthquake resistance of wooden houses by preventing the foundation from rising during an earthquake. The purpose is to provide a seismic structure for houses.

The present invention is an earthquake resistant structure of a wooden house that improves the earthquake resistance of the wooden house,
A pipe extending through the foundation of the wooden house into the ground, a core inserted through the pipe, and an anchor part formed by solidifying the grout injected through the pipe around the lower end of the pipe; And a locking means fixed to the upper end side of the core material and locked to the foundation.

  Moreover, the present invention is characterized in that the core material is constituted by a wire rope, and a wire element of the wire rope is unwound at the anchor portion.

  Furthermore, in the present invention, the locking means includes a ring member through which the core member can be inserted, and a wedge member inserted from above into the gap between the core member inserted into the ring member and the ring member. It is comprised from these, It is characterized by the above-mentioned.

Furthermore, the present invention is a seismic structure of a wooden house that improves the seismic resistance of the wooden house,
A pipe extending through the foundation of the wooden house into the ground, an anchor formed by solidifying a grout injected through the pipe around the lower end of the pipe, and fixed to the upper end of the pipe, And a locking means locked to the foundation.

  Furthermore, in the present invention, the lower end side of the flexible wire is connected to the upper end side of the core member, and the upper end side of the wire member is locked to the upper structure constructed on the foundation of the wooden house. It is characterized by that.

  According to the earthquake-resistant structure of the wooden house according to the present invention, the lower end portion of the core material or the pipe material is fixed to the ground by the anchor portion, and the locking means fixed to the upper end side of the core material or the pipe material is provided on the wooden house. Since it is locked to the foundation, it is possible to prevent the wooden house from being lifted off the ground together with the foundation in the event of an earthquake. Therefore, unlike the conventional case, the foundation is destroyed by the impact force when the raised foundation collides with the ground, and the wooden house is not damaged.

  In addition, the earthquake-resistant structure of a wooden house according to the present invention can be constructed by simple construction that provides a hole in the foundation, so it is easy and inexpensive for existing wooden houses as well as for new construction. Its earthquake resistance can be improved.

  Hereinafter, the earthquake-resistant structure 10 of the wooden house of this embodiment is demonstrated, referring FIGS. 1-3.

  The earthquake-resistant structure 10 of this embodiment improves the earthquake resistance of the existing wooden house. As shown in FIG. 1, a foundation 1 having a footing 11 at a lower portion is formed on a crushed stone 12 and a discarded concrete 13, and an upper structure of a wooden house (not shown) including a base 14 is formed on the foundation 1. Has been built. The foundation 1 and the base 14 are connected by a known anchor bolt 15, and a plurality of reinforcing bars 16 are arranged inside the foundation 1.

  As shown in FIG. 1, the earthquake-resistant structure 10 of the present embodiment includes a pipe member 2 that penetrates the foundation 1 and extends into the ground, a core member 3 inserted through the pipe member 2, and a periphery of the lower end portion of the pipe member 2. The anchor portion 4 is formed in an expanded state, and the locking means 5 is fixed to the upper end side of the core member 3 and locked to the foundation 1.

  The pipe material 2 employs a vinyl chloride round pipe in this embodiment, and extends vertically through the footing 11 of the foundation 1. That is, as shown in FIG. 2, a hole 21 having a diameter of about 50 mm and a depth of about 1.5 m is formed from the upper surface of the footing 11 exposed by digging the ground in the vicinity of the foundation 1 into the ground by a core cutter. The pipe 2 is inserted into the hole 21 from above.

  In the present embodiment, the core material 3 employs a deformed steel bar 31 having a diameter of 16 mm. As shown in FIG. 3, the core material 3 is inserted from above into the tube material 2 inserted into the hole 21, and its lower end protrudes from the lower end portion of the tube material 2 and reaches the bottom of the hole 21. A large number of projections (not shown) are formed on the surface of the deformed steel bar 31, and a male screw part 32 is engraved on the upper part.

  The anchor part 4 is formed by solidifying the grout injected through the pipe material 2 in the ground. That is, the grout is injected from the upper end of the pipe member 2 through the gap between the pipe member 2 and the core member 3 using a known unillustrated injection pump, and the grout discharged from the lower end portion of the pipe member 2 is placed around the bottom of the hole 21. Infiltrate into the ground. The penetration of the grout into the ground greatly proceeds around the lower end portion of the pipe material 2 due to the presence of the pipe wall of the pipe material 2. By solidifying the grout in this state, as shown in FIG. 1, the diameter-expanded anchor portion 4 is formed around the lower end portion of the tube material 2. The anchor portion 4 fixes the lower end portion of the core material 3 in the ground.

  The locking means 5 locks the upper end side of the core material 3 to the upper surface of the foundation 1. The locking means 5 of the present embodiment is composed of a nut 51 that can be screwed into the male screw portion 32 at the upper end portion of the core member 3. After forming the anchor portion 4, the nut 51 is screwed onto the male screw portion 32 of the core member 3 and tightened, whereby the nut 51 is locked to the upper surface of the footing 11 via a washer. Thereafter, earth and sand are put on the footing 11 of the foundation 1 and backfilled.

  In addition, although the Example which comprised the earthquake-resistant structure 10 in the outer side of the reverse T-shaped footing 11 of the foundation 1 is described here, this invention is not limited to this of course, The footing of the foundation 1 is demonstrated. You may comprise the earthquake-resistant structure 10 in the outer side and the inner side of 11, respectively. Moreover, although it is preferable to comprise the several earthquake-resistant structure 10 at predetermined intervals over the perimeter of the foundation 1, you may make it each comprise the earthquake-resistant structure 10 in the planar shape corner of the foundation 1. FIG. The same applies to the seismic structure of the modified example described later.

  Thus, in the earthquake-resistant structure 10 of the wooden house of the present embodiment, the lower end portion of the core member 3 is fixed to the ground by the anchor portion 4 and the locking is fixed to the upper end portion of the core member 3. Since the nut 51 of the means 5 is locked to the upper surface of the foundation 1, it is possible to prevent the wooden house from being lifted off the ground together with the foundation during an earthquake. Therefore, unlike the conventional case, the foundation is destroyed by the impact force when the raised foundation collides with the ground, and the wooden house is not damaged.

  Moreover, the earthquake-resistant structure 10 of the wooden house of this embodiment can be comprised only by the simple construction of the grade which opens the hole 21 in the footing 11 of the foundation 1 with respect to the existing wooden house. Therefore, the earthquake resistance of the existing wooden house can be improved easily and inexpensively.

  As mentioned above, although embodiment of the earthquake-resistant structure of the wooden house concerning this invention was described, the earthquake-resistant structure concerning this invention can also be implemented with another form.

  For example, you may comprise like the earthquake-resistant structure 20 shown in FIG. The core material 3 in the earthquake-resistant structure 20 is configured by a wire rope 33 formed by twisting a plurality of steel wires. The wire rope 34 is unwound from the lower end portion of the wire rope 33, and a plurality of wire strands 34 are spread apart in the anchor portion 4. As a result, the lower end portion of the core member 3 made of the wire rope 33 and the anchor portion 4 are more firmly connected. At the time of construction of the earthquake-resistant structure 20, after the wire strand 34 of the wire rope 33 is unwound, the wire rope 33 is inserted into the pipe material 2. The broken wire 34 can be smoothly inserted along the inner surface of the tube 2. Even if each wire element 34 is biased in the expanding direction in the tube material 2, it can be smoothly inserted along the inner surface of the tube material 2. Thus, when each inserted wire 34 is protruded from the lower end portion of the tube material 2, each wire strand 34 can be expanded beyond the diameter of the tube material 2, and the lower end portion of the wire rope 33 and the anchor portion 4. Can be more firmly connected.

  As shown in FIGS. 4 and 5, the locking means 5 of the earthquake-resistant structure 20 includes a ring member 52 through which the core member 3 made of the wire rope 33 can be inserted, and a plurality of members that can be inserted into the ring of the ring member 52. And a wedge member 53. The upper end of the wire rope 33 is inserted into the ring member 52 from below, and a pair of wedge members 53 are inserted into the gap between the wire rope 33 and the inner periphery of the ring member 52 from above. When a downward tensile force is applied to the wire rope 33, the wire rope 33 is more firmly held and fixed by the pair of wedge members 53. The ring member 52 is locked to the upper surface of the footing 11 of the foundation 1 through a washer 54.

  Moreover, as shown in FIG. 4, the earthquake-resistant structure 20 has a protrusion 35 fixed to the lower end side of the wire rope 33. Similar to the locking means 5, the protrusion 35 is composed of a ring member 36 through which the wire rope 33 can be inserted and a plurality of wedge members (not shown) that can be inserted into the ring of the ring member 36. The lower end side of the wire rope 33 is inserted into the ring member 36 from above, and a plurality of wedge members are inserted and fixed into the gap between the wire rope 33 and the inner periphery of the ring member 36 from below. Also by this protrusion 35, the lower end side of the wire rope 33 and the anchor part 4 are firmly connected. The projecting portion 35 is fixed to the core material 3 before the core material 3 is inserted into the tube material 2, and the ring member 36 of the projecting portion 35 is formed in a size that can be inserted into the tube material 2. Yes.

  According to the seismic structure 20 of this embodiment, the lower end portion of the core material 3 is fixed to the ground by the anchor portion 4 and the ring member 52 of the locking means 5 fixed to the upper end portion of the core material 3. Is locked to the upper surface of the foundation 1, the wooden house can be prevented from floating from the ground together with the foundation in the event of an earthquake, as with the earthquake-resistant structure 10 of the above-described embodiment. There is no case where the foundation is destroyed by the impact force of when it collides with the ground, causing the catastrophic damage to the wooden house.

  Furthermore, you may comprise the seismic structure of the wooden house which concerns on this invention like the seismic structure 30 shown in FIG.6 and FIG.7. In the earthquake-resistant structure 30, the lower end of the wire 6 is connected to the upper end of the core 3 of the earthquake-resistant structure 20 by the connecting means 7, and the upper end of the wire 6 is locked to the upper structure 17 of the wooden house. There is a feature in that.

  The wire 6 of the earthquake resistant structure 30 is composed of a wire rope 61 in which a plurality of steel wires are twisted and the periphery thereof is covered with a synthetic resin material, and has flexibility. The steel wire is exposed near the upper and lower ends of the wire rope 61.

  As shown in FIG. 7, the connecting means 7 includes a ring member 71 through which the wire 6 can be inserted, a plurality of wedge members 72 that can be inserted into the ring of the ring member 71, the ring member 71, and the locking means. And a cylindrical connection sleeve 73 that connects the five ring members 52 to each other. A male screw portion 74 is formed on the outer periphery of the ring member 71, and a female screw portion 75 that can be screwed to the male screw portion 74 is formed on the inner periphery of the connecting sleeve 73. A male screw portion 55 having the same shape as the male screw portion 74 is formed on the outer periphery of the ring member 52 of the locking means 5.

  As shown in FIG. 7, the lower end portion of the wire 6 is inserted into the ring member 71 from above, and a pair of wedge members 72 are inserted into the gap between the wire 6 and the inner periphery of the ring member 71 from below. Yes. Thus, when an upward tensile force is applied to the wire 6, the wire 6 is more firmly held and fixed by the pair of wedge members 72. The female screw portion 75 of the connecting sleeve 73, the male screw portion 74 of the ring member 71, and the male screw portion 55 of the ring member 52 are screwed together. As a result, the core 3 and the wire 6 are firmly connected via the locking means 5 and the connecting means 7.

  As shown in FIG. 6, the upper end portion of the wire 6 is locked to the eaves 18 of the upper structure 17 of the wooden house by the fixing portion 8. The fixing portion 8 is configured by a ring member 81 through which the wire 6 can be inserted and a plurality of unillustrated wedge members that can be inserted into the ring of the ring member 81, as in the locking means 5. An upper end of the wire 6 is inserted into the ring member 81 from below, and a plurality of wedge members are inserted into the gap between the wire 6 and the inner periphery of the ring member 81 from above. A through hole 19 is provided at an end portion of the eaves 18, and a fixing portion 8 is fixed to an upper end portion of the wire 6 passing through the through hole 19 from below. The fixing portion 8 is locked to the upper surface of the eaves 18.

  According to the seismic structure 30, the lower end portion of the core member 3 is fixed to the ground by the anchor portion 4, and the ring member 52 of the locking means 5 fixed to the upper end portion of the core member 3 is engaged with the upper surface of the foundation 1. Since it is stopped, it is possible to prevent the wooden house from being lifted off the ground together with the foundation during the earthquake as in the case of the earthquake-resistant structure 20 described above. Furthermore, the wire 6 is connected to the core 3 via the locking means 5 and the connecting means 7, and the upper end of the wire 6 is locked to the upper structure 17 of the wooden house. It is possible to prevent the upper structure 17 from being lifted, and to further improve the earthquake resistance of the wooden house without complicating the structure.

  Further, according to the earthquake-resistant structure 30, the wire 6 made of the wire rope 61 has flexibility, so that the wire 6 is appropriately bent and deformed, for example, in connection with the core material 3 or the upper structure 17. It is possible to carry out the locking operation with this, and the construction workability is excellent. In addition, although the example which connected the lower end part of the wire 6 to the upper end part of the core material 3 is demonstrated here, it is also possible to comprise these core materials and a wire material integrally by the continuous wire rope. . Moreover, you may employ | adopt the steel bar with which the circumference | surroundings were coat | covered with the synthetic resin material as this wire 6. FIG.

  Furthermore, you may comprise the seismic structure of the wooden house which concerns on this invention like the seismic structure 40 shown in FIG. The seismic structure 40 is fixed to the base 1 and fixed to the upper end side of the pipe member 2, the pipe member 2 extending through the foundation 1 to the ground, the anchor portion 4 formed around the lower end portion of the pipe member 2, and The locking means 5 is made up of. Unlike the embodiment described above, there is a feature in that the seismic structure is further simplified without providing a core material in the tube material 2.

  The pipe material 2 in the earthquake-resistant structure 40 is made of a steel pipe material, and a male screw portion (not shown) is engraved on the upper end side thereof. By injecting the grout through the tube material 2 and solidifying the injected grout, the anchor portion 4 in an expanded state is formed around the lower end portion of the tube material 2 as in the above embodiment.

  The locking means 5 in the earthquake-resistant structure 40 locks the upper end side of the tube material 2 to the upper surface of the foundation 1, and includes a cap nut 56 that can be screwed into a male screw portion on the upper end side of the tube material 2. . After the anchor portion 4 is formed, the cap nut 56 is locked to the upper surface of the footing 11 via a washer by screwing and tightening the cap nut 56 to the male screw portion of the pipe material 2.

  According to this earthquake-resistant structure 40, the lower end portion of the pipe material 2 is fixed to the ground by the anchor portion 4, and the cap nut 56 of the locking means 5 fixed to the upper end portion of the pipe material 2 is provided on the upper surface of the foundation 1. Since it is locked, it is possible to prevent the wooden house from being lifted off the ground together with the foundation in the event of an earthquake as in the case of the earthquake-resistant structure of the above-described embodiment. Furthermore, since it is not necessary to insert a core material into the tube material 2, the configuration can be further simplified, and the earthquake resistance of the wooden house can be improved more easily and at a lower cost.

  Furthermore, you may comprise the seismic structure of the wooden house which concerns on this invention like the seismic structure 50 shown in FIG. The seismic structure 50 is characterized in that an increased hitting portion 9 is formed on the foundation 1 and the locking means 5 fixed to the upper end of the core member 3 is locked on the upper surface of the increased hitting portion 9. Other configurations are the same as those of the earthquake-resistant structure 10 described above. A through hole 91 is provided in the additional hitting portion 9, and the core material 3 is inserted through the through hole 91. Further, a reinforcing bar 92 is provided in the additional hitting portion 9. As a result, it is possible to reliably improve the earthquake resistance of an existing wooden house with an unfounded foundation.

  Furthermore, you may comprise the seismic structure of the wooden house which concerns on this invention like the seismic structure 60 shown in FIG. The earthquake-resistant structure 60 is characterized in that a protrusion 37 larger than the outer diameter of the pipe material 2 is fixed to the lower end side of the core material 3 made of steel bar, and other configurations are the same as those of the earthquake-resistant structure 10 described above. is there.

  The protrusion 37 includes a ring member 38 through which the core member 3 can be inserted, and a plurality of wedge members 39 that can be inserted into the ring of the ring member 38. The lower end side of the core member 3 is inserted into the ring member 38 from above, and a plurality of wedge members 39 are inserted and fixed into the gap between the core member 3 and the inner periphery of the ring member 38 from below.

  The seismic structure 60 is constructed as follows. First, the protrusion 37 is fixed to the lower end side of the core material 3, and the tube material 2 is fitted from the upper end side of the core material 3. And the pipe material 2 with this core material 3 is inserted in the hole opened toward the ground from the upper surface of the footing 11. After that, grout is injected from the upper end of the pipe 2 through the gap between the pipe 2 and the core 3 using a known injection pump, and the grout is caused to flow out from the gap between the lower end of the pipe 2 and the protrusion 37 to form the bottom of the hole. Infiltrate the surrounding ground. In this way, as in the above-described embodiment, the diameter-expanded anchor portion 4 is formed around the lower end portion of the tube material 2. Due to the presence of the protruding portion 37 larger than the outer diameter of the tube material 2, the lower end side of the core material 3 and the anchor portion 4 are more firmly connected.

  Furthermore, in the above-described embodiment, an example of improving the earthquake resistance of an existing wooden house has been described. However, the earthquake-resistant structure of the wooden house according to the present invention is not limited to this, and the wooden house is not limited to this. It can also be applied when building a new house. Moreover, in the said embodiment, although the pipe material 2 is provided in the perpendicular direction, you may make it incline and provide. Moreover, you may vary an inclination angle for every some pipe material.

  The present invention can be carried out in a mode in which various improvements, modifications, and variations are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention. In addition, any invention-specific matters may be replaced with other technologies within a range where the same action or effect occurs, and the integrally-configured invention-specific matters are constituted by a plurality of members. Alternatively, the invention specific items configured by a plurality of members may be implemented in an integrated configuration.

It is a schematic sectional side view of the earthquake-resistant structure of the wooden house of this embodiment. It is a schematic sectional side view explaining the construction process of the seismic structure. It is a schematic sectional side view explaining the construction process of the seismic structure. It is a general | schematic cross-section side view of the earthquake-resistant structure of the modification concerning this invention. It is a principal part expanded sectional view explaining the latching means of the seismic structure. It is a schematic sectional side view of the earthquake-resistant structure of the other modification concerning this invention. It is a principal part expanded sectional view explaining the latching means and connection means of the seismic structure. It is a general | schematic cross-section side view of the earthquake-resistant structure of the other modification which concerns on this invention. It is a general | schematic cross-section side view of the earthquake-resistant structure of the other modification which concerns on this invention. It is a general | schematic cross-section side view of the earthquake-resistant structure of the other modification which concerns on this invention.

Explanation of symbols

10, 20, 30, 40, 50, 60 Earthquake-resistant structure 1 Foundation 11 Footing 17 Superstructure 18 Scale 2 Tubing 3 Core material 31 Deformed bar 32 Male thread 33 Wire rope 34 Wire strand 35, 37 Projection 4 Anchor 5 Locking means 51 Nut 52 Ring member 53 Wedge member 54 Washer 6 Wire rod 61 Wire rope 7 Connection means 71 Ring member 72 Wedge member 73 Connection sleeve 8 Fixing portion 9 Additional hitting portion

Claims (5)

A seismic structure of a wooden house that improves the earthquake resistance of the wooden house,
A pipe extending through the foundation of the wooden house into the ground,
A core material inserted through the tube material;
An anchor portion in which the grout injected through the tube material is solidified around the lower end of the tube material;
Locking means fixed to the upper end side of the core material and locked to the foundation;
Seismic structure of wooden house, characterized by having   The earthquake resistant structure for a wooden house according to claim 1, wherein the core material is constituted by a wire rope, and a wire element of the wire rope is unwound at the anchor portion.   The locking means includes a ring member through which the core member can be inserted, and a wedge member inserted from above into a gap between the core member inserted into the ring member and the ring member. The earthquake-resistant structure of the wooden house of Claim 1 or Claim 2. A seismic structure of a wooden house that improves the earthquake resistance of the wooden house,
A pipe extending through the foundation of the wooden house into the ground,
An anchor portion in which a grout injected through the tube material is solidified around the lower end of the tube material;
Locking means fixed to the upper end side of the tube and locked to the foundation;
Seismic structure of wooden house, characterized by having The lower end side of the flexible wire is connected to the upper end side of the core member, and the upper end side of the wire member is locked to an upper structure constructed on the foundation of the wooden house. The earthquake-resistant structure of the wooden house as described in any one of.

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