JP2000345718A - External reinforcing construction method of wooden building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain earthquake-resistant reinforcement at a low cost by a method wherein the periphery of a building is surrounded by poles, in which lower sections are buried into a ground and which are disposed upright, and a plurality of the poles are attached, increasing the intervals of the poles on the outer circumference of the wooden building and the poles and the building are clamped at second floor positions. SOLUTION: Poles 2 such as steel pipes disposed upright on the outer circumferential section of the existing two-storied wooden building 1 are installed, enclosing the periphery of the building 1. Reinforcements 3 such as base reinforcements, vertical reinforcements, horizontal reinforcements or the like are arranged and driven into a drilled hole in a ground, and foot protection bodies 4 composed of reinforced concrete are formed at that time. The bodies 4 are connected to a foundation such as a continuous footing 5, a sill 6 or the like as required. The ground height of the poles 2 is set in the same extent as the first floor section 1a, and oblong plates 8 are installed near the tops of the poles and bonded with existing wooden girths 10 by a bonding material or the like at the level of the second floor 9 of the building 1. Angle material-borne flanges are formed in caps 11 at the tops of the poles 2, and the infiltration of rainwater is prevented. Accordingly, earthquake-resistant reinforcement can be obtained simply in a short period at a low cost only by mounting the poles 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for externally reinforcing a wooden house which is mainly an existing wooden house but can be applied to a new wooden house.

[0002]

[Prior Art] Nearly 20 years have passed since the revision of the seismic regulations in the Building Standards Law, and buildings designed under the old standards (prior to 1981) require repairs for their aging, and the Great Hanshin Earthquake triggered The issue is seismic safety.

With respect to the seismic safety of reinforced concrete buildings and the like, the current seismic retrofitting methods include the addition of earthquake-resistant walls, the addition of braces, the addition of sled walls, or the reinforcement of columns. Furthermore, it is conceivable to increase the wall thickness of the earthquake-resistant wall, increase the cross-section of the brace, increase the cross-section of the column, or as a special case, put the entire building on the seismic isolation device.

[0004] To explain these in more detail, the seismic wall to be added can be selected from a cast-in-place wall, a PCa plate wall, an iron plate wall, a concrete block wall and the like, and is fixed to a column / beam via an anchor bolt or the like. Is intended to improve proof stress or proof stress and toughness.

[0005] To add a brace, an X-shaped brace, a K-shaped brace, a V-shaped brace, or other shaped brace can be selected as a brace.
The purpose is to improve the toughness.

[0006] The addition of a sled wall is a cast-in-place wall or a PCa plate sled wall as the sled wall, and is intended to improve the proof stress.

[0007] In the case of reinforcing columns, a method of winding steel plates around existing columns and filling non-shrink mortar in gaps, a method of winding a reinforcing bar around existing columns and reinforcing them with post-cast concrete or mortar, etc. Welding wire mesh and FRP can be placed around and filled with non-shrink mortar, post-cast concrete or mortar, and method of trimming the lumbar wall can be selected to improve the proof stress or toughness. And

On the other hand, for wooden houses, research on seismic reinforcement from outside has not progressed much.

It is conceivable that existing wooden houses may be similarly reinforced by strengthening walls, columns, and braces, but it is necessary to change the layout of the building by adding them. In some cases, it may not be possible to increase the number of places required for the function of the building. Further, during the construction period, there is a problem that the entire house or at least the floor to be constructed cannot be used.

[0010] Further, the method of increasing the thickness of the wall or enlarging the column section may reduce the effective area of the building.

By the way, in the Great Hanshin Earthquake, many wooden houses collapsed, and most of the more than 6,000 people died under the collapsed houses, and this was the most significant feature. Therefore, the inventor of the present application
The main causes were investigated in articles, magazines and newspapers published since the earthquake.

Himeji Institute of Technology Takaaki Matsuda, Hyogo University of Education
According to Atsushi Takemura, "The collapse direction of wooden houses in the 1995 Hyogoken-Nanbu Earthquake" (Geological Review No. 51, March 1998), paying attention to the distribution of collapse from Awajishima to Takarazuka. Observing the direction of collapse of about 2640 wooden houses.

According to the report, many wooden houses collapsed in a certain direction (corresponding to 70% of the total collapsed houses), the second-floor houses were left with more than one floor, and the first floor was often crushed from the side. . The first-floor store was not as likely to collapse as the two-storey store, but if it did, the roof was not broken and the house was often pushed down from the side. The base of the house had just collapsed in a form that had just been "pawed". Many people who died on the first floor of a wooden house died because of this collapse pattern. Next, we consider what kind of earthquake caused such a phenomenon.

From seismic waves recorded at the Kobe Marine Meteorological Observatory (maximum horizontal acceleration of about 820 gal), seismologists point out that the characteristics of the Hyogo-ken Nanbu Earthquake are that strong rolling and pitching overlap, the acceleration is extremely large, and The speed of movement is 100 per second
At an abnormal value of more than 100 centimeters (cm), such earthquakes are said to exert high-speed forces and cause shock destruction of structures.

Professor Hirokazu Iemura (Earthquake Engineering) of the Faculty of Engineering, Kyoto University states that a wooden house or a building up to the 20th floor (natural period 0.3 seconds to 1.5 seconds) will take 1 He said that he received a pulse-like vibration that took only ~ 2 seconds.

[0016] Professor Shinji Tanimura (Mechanical Systems Engineering) of the Faculty of Engineering, Osaka Prefectural University also reported that severe early 1
He says that waves or two waves are the main cause.

Professor W. Iwan of the California Institute of Technology stated that the first concentration of destructive energy was
He says that ground displacement is involved. Particularly near the fault, the structure itself "foot-walks" rather than shakes
To cause it to collapse in the same direction or to break in the first or second shaking. In particular, the ground floor cannot keep up with the sudden movement of the ground, and is greatly deformed like "whipstick" and collapses at a stretch. In other words, unlike a normal earthquake in which a building shakes many times and then undergoes maximum deformation, it is a pattern in which the first large shaking destroys itself.

[0018]

As mentioned above, many people are always potentially terrified of a subjacent earthquake. However, there are many aging wooden houses on the active fault, which is said to be over 2,000 in Japan.
It is indispensable for society to take such seismic measures.

Conventionally, as described above, for wooden houses,
At present, research on seismic reinforcement has not progressed much,
Attempts have been made to reinforce the frame from the outside by adding a steel frame to the side surface, or to add a steel sleeve wall, but this has been limited to partial reinforcement, which is costly and poor in appearance.

In particular, in the conventional seismic retrofitting, there was no countermeasure to prevent the house from being "pawed" even by pulse-like vibration.

An object of the present invention is to provide an inexpensive, simple, and effective wooden countermeasure which solves the above-mentioned disadvantages of the conventional example and provides an effective countermeasure for preventing a house from being "pawed" even by pulse-like vibrations. The object of the present invention is to provide an external reinforcement method for a wooden house that can be realized while staying in place and has a good appearance.

[0022]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention firstly provides a pole which is erected in the outer periphery of a wooden house with its lower part buried underground so as to surround the wooden house. The main point is that a pole and a wooden house are tied at the second floor position, and that the pole is provided with a horizontally long plate and that the wooden house is tied through this plate. It is.

Secondly, a plurality of poles which are erected at the outer periphery of the wooden house with the lower part buried in the ground under the ground are provided at intervals so as to surround the periphery of the wooden house. The gist of the present invention is to provide a horizontally long plate for receiving a collapse in the vicinity of a wooden house on a pole, and furthermore, connect poles to be erected at intervals with a metal wire.

Third, the pole is to be tied to the foundation as necessary, and fourth, the pole is to be extended to the second floor as necessary.

According to the first aspect of the present invention, a plurality of poles which are erected at the outer periphery of the wooden house with the lower part buried in the ground so as to surround the wooden house are provided at intervals. Since the pole and the building are tied to each other at the second floor position, the poles bear the inertial force of the wooden house generated during the earthquake, thereby reducing the deformation of the wooden building and `` pawling ''
It can act on a wooden house as if it were hitting it, causing it to collapse in the same direction, or to deal with an earthquake that could be destroyed by the first or second shaking.

As shown in FIG. 6, in the case of an earthquake in the X direction,
a to d 4 poles. The seismic force between the house and the pole is transmitted by the shear resistance of the ad-d junction. eh
The four poles are stretched and compressed, and can be expected to be extra resistance.

Also, by providing a plurality of poles at intervals so as to surround the wooden house, it is possible to cope with the wooden house in any direction.

Further, if the interval between the poles provided on each side face is made close to each other so as to sandwich the corner portion at the corner portion (FIGS. 6a and e, b and g, c and f, d and h),
The corner can be prevented from collapsing without a pole.

In addition to this, poles which are buried below the ground and erected outside the wooden house are only added at appropriate intervals, so that the appearance of the house is hardly obstructed, and the appearance of the house can be maintained. it can. In addition, even if it is installed in an existing house, the construction can be performed while keeping the living environment.

According to the second aspect of the present invention, in addition to the above operation, the pole is connected to the wooden house via the horizontally long plate, so that the connection can be ensured.

According to the third aspect of the present invention, the structure is substantially the same as that of the first aspect, except that the pole and the building are separated from each other. The force is received by poles and horizontal plates (pads) standing around the wooden house, and the idea of guardrails is used to reduce the deformation of the wooden building.

As shown in FIG. 19, in the case of an earthquake in the X direction,
The houses collapse in the direction opposite to the direction of the earthquake, so poles A and B
We receive in two.

According to the fourth aspect of the present invention, in addition to the effect of the third aspect of the present invention, the impact force varies depending on the magnitude of the earthquake and the construction area of the wooden house. Although the number varies, it is possible to improve the proof stress by connecting the pole tops with a metal wire such as a piano wire.

According to the present invention as set forth in claim 5, the pole can be made more effective by being connected to the foundation as necessary. According to the present invention as set forth in claim 6,
By setting the height of the pole up to the second floor and raising it to the ceiling of the second floor if necessary, the damage or collapse of the second floor can be reliably prevented.

[0035]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view showing a first embodiment of an external reinforcing method for a wooden house according to the present invention, in which 1 is an existing two-story wooden house, 1a is a first floor part, and 1b is a second floor part. 5 and 6 are explanatory diagrams of the present invention.

The present invention is directed to a pole 2 which is erected under the ground at the outer periphery of such an existing two-story wooden house 1 with its lower part buried underground.
Are provided at intervals so as to surround the wooden house 1.

In this embodiment, a steel pipe is used for the pole 2 and, when the pole 2 is inserted into a hole formed underground and erected, a reinforcing bar 3 such as a base bar or a horizontal bar is arranged in the hole. Then, concrete is cast to form a reinforced body 4 of reinforced concrete. The material of the pole 2 is not limited to steel pipe, but aluminum alloy, stainless steel, concrete, and the like can also be used.
In addition, as shown in the figure, it is possible to use a square tube, a cylinder, a prism, an angle material or a channel material in addition to a circular tube as shown in the figure.

The root compact 4 is not only a prism having a square cross section as shown in FIG. 3, but also a post-installed anchor 7 which can be connected to an existing cloth foundation 5 or base 6 as shown in FIG. Alternatively, the shape may be close to the foundation as a horizontally long rectangular shape.

As described above, the pole 2 can be connected to a foundation such as the cloth foundation 5 or the base 6 if necessary.

As shown in FIG. 5, the poles 2 are arranged side by side at an appropriate interval from each other.
It is assumed that the poles 2 attached to the respective side surfaces are relatively close to each other so as to sandwich this.

The height of the pole 2 on the ground is substantially the same as that of the first-floor portion 1a, and a horizontally long plate 8 is provided near the top, and at the level of the second-floor floor 9 of the wooden house 1 via the horizontally long plate 8, for example, It was connected to the existing wooden trunk 10 with a screw bolt 22 or an adhesive.

Although various configurations of the horizontally long plate 8 are conceivable, in this embodiment, a plurality of L-shaped angle members 20a and 20b and a joining plate 21 are connected by bolts as shown in FIGS. . By the way, the diameter of the pole 2 is φ190
When the length is set to about mm or φ217 mm, the length of the horizontally long plate 8 becomes about 600 mm.

The top of the pole 2 is covered with a cap 11 to prevent rainwater from entering. In this embodiment, the cap 11 is formed with a flange 23 for supporting the angle member 20a.

In this way, the pole 2 and the building are tied together at the second floor 9 of the wooden house 1 so that the pole 2 can bear the seismic force of the wooden house 1 generated during an earthquake.

As shown in FIG. 5, the pole may be raised to the ceiling position of the second floor portion 1b if necessary. The required number of poles 2 also varies depending on the magnitude of the earthquake and the construction area of the wooden house 1. Also, the scale of the assumed earthquake is
It is basically decided by consulting with the owner, but as a guide, the Hyogoken Nanbu Earthquake class: 800 ga1 on the ground, the same level as new seismic design: 400 ga1 on the ground, and the seismic strengthening from the current situation: 200 ga1 on the ground.

Assuming that such a system for binding the pole 2 and the building 1 is called a tight system, a calculation example of the tight system is as follows (the "wooden design" of the Building Guidance Division, Housing Bureau, Ministry of Construction). reference.)

Eight poles are built around the house as shown in FIG. 6, and the tops of the poles are screw bolts 22 or an adhesive as shown in FIG.
Ties from the outside on the second floor like.

The calculation of the seismic force acting on the second floor is shown below. Standard shear force coefficient _Co = 0.2
100 ga1), Ai distribution A ₁ = 1, A ₂ = 1.3
And The load on each floor is W ₁ = W ₂ = 260 * 30 * 3.3 * 1/2 ≒ 13tonf The maximum layer shear force on the first floor is

Seismic force Qmaxb per pole Suppose that four poles bear the seismic force, ignoring the strength of the wooden house. The cross section of the pole is φ: 190.7 × 6 As mentioned above, it turns out that there is no problem in proof stress.

[0050]

[Table 1]

The relationship between the scale of the existing wooden house 1 and the pole 2 required for seismic reinforcement can be summarized in the following Table 1 in the case of the pole anchor tight type which connects the pole 2 and the building 1. In this case, the earthquake level is considered to be equivalent to the new seismic design method, and about 400 ga1 on the ground surface is taken into consideration.

FIG. 11 shows a second embodiment of the present invention, in which a pole 2 erected by embedding a lower part in the ground at the outer peripheral portion of a wooden house 1 is disposed so as to surround the wooden house 1. The plurality of attachment points are the same as in the first embodiment at intervals, but the pole 2 is provided with a horizontally long plate 12 (pad) which becomes a catch at the time of collapse on the pole at the second floor 9 at the wooden house 1.
And was provided horizontally in the vicinity of. That is, in the present embodiment, the horizontally long plate 12 (pad) is provided on the pole 2 in a slightly separated state so that the horizontal displacement of the wooden house at the surface of the wooden house does not become too large without being tightly connected to the wooden house 1.

As shown in FIGS. 12 and 13, a bend plate like a guardrail is used for the horizontally long plate 12, and the pole 2
A receiving plate 14 is provided near the top of the
12 was received and connected by a through bolt 13. The details are shown in FIGS.

On the other hand, on the second floor 9 of the wooden house 1 corresponding to the horizontally long plate 12, an outer wall protection plate is provided on the outside.
15 may be stretched and fixed with a screw bolt or the like. In the figure 17
Is a joist forming the second floor 9, 18 is a girder, 19 is an existing column, and the outer wall protection plate 15 is provided corresponding to the position of the existing wooden trunk 10.

FIGS. 18 and 19 are explanatory diagrams. FIG. 20 shows the arrangement of the poles 2 when applied to an actual building. FIG. 13 is a perspective view of the appearance.

As described above, in the second embodiment, the impact force of the wooden house generated at the time of the pulse-like earthquake is determined by using the pole 2 and the horizontally elongated plate 12 (pad) [around the wooden house 1] ] To reduce the deformation of the wooden house 1.

At this time, the height of the pole 2 is up to the second floor 9, but if necessary, it can be raised to the second floor ceiling position of the second floor portion 1b.

Since the impact force changes depending on the magnitude of the earthquake and the building area of the wooden house 1, the required number of poles 2 changes correspondingly. It is also possible to improve the proof stress by connecting all the tops of the pole 2 with a metal wire 16 such as a piano wire.

The metal wire 16 is, for example, a pole 2
The horizontal plates 12 provided in the above are connected to each other so as to surround the outer periphery of the wooden house 1.

Here, for a wooden house with a total building area of 30 tsubo and a total of two floors, an earthquake of 800 ga1 is targeted.
The member cross section of the pole 2 in the second embodiment is roughly calculated.

The calculation of the natural period of the pole is as follows. The pole is a steel cylindrical section, φ: 190.7 × 6. Natural frequency of cantilever with concentrated mass W at the top
ω is expressed by the following equation according to the Rayleitz method. Where α = γAL / W γ: specific gravity of iron γ = 7.85 × 10 ⁻⁶ tonf / cm ³ A: cross-sectional area of pole A = 34.82 cm ² L: length of pole L = 300 cm W: weight of pad W = 200 kgt = 0.02 tonf g: acceleration of weight g = 981 cm / sec ² E: Young's modulus E = 2100 tonf / cm ² I: second moment of area I = 1490 cm ⁴ Therefore, α = 4.10 ω ² = 8663.88 ω = 93.08 rad / sec Therefore, the natural period T of the pole is T = 2π / ω = 0.067 sec

The calculation of the impact force Pmax acting on the top of the pole is as follows. (1) Since pole spring constant · Ks calculations pole of the equivalent mass m of a ^{Ks = 3EI / L 3 Ks =} 0.348 tonf / cm m = Ks / ω 2 = 0.000040tonf / cm · sec 2 (2) Pmax Calculation of Assume that 2/3 of the total weight of the wooden house acts on the top of the pole as an impact. Assume that this impact mass is received by two poles as shown in FIG. Seismic load = LL200 + DL60
= 260 because it is kg / m ^2, the total weight · W _t wooden houses W _t = 260 × 30 tsubo ^{× 3.3 m 2 × 2/3} = 17160kg ≒ 17to
nf mass M _t that when _{M t = 0.01733tonf / cm · sec} 2 Southern Hyogo Prefecture Earthquake class here: Assuming the earth's surface 800 gal (Kobe Marine Observatory recorded) the natural period of the second floor shop T _b =
(0.02-0.03) When h = 6.5 m from the h T _b = 0.13 to
0.2sec, the maximum velocity of the second floor is the response spectrum (Architectural Institute of Japan, 1995 Hyogoken Nanbu Earthquake Disaster Report 1995.3, p.
10 to 10 to 20 Cain.

However, here, it is assumed that the natural period of the aging two-story wooden house is a little longer, and T _b = 0.3 to 0.4
Assuming sec, the one-mass system velocity response is 70-130 cm / sec (kine). Therefore, here, V = 100 cm / sec (100
Cain) Think about the degree. Assuming that the coefficient of restitution between the wooden house and the pad is e = 0.3, the impact force Pmax acting on the pole top is
Since colliding wooden building mass per M = 1 / 2M _t 1 this pole, Pmax = ωm M (1 + e) V / (m + M)
When Pmax = 0.48tonf this because it is more ^{M = 0.008746tonf / cm · sec 2} , bending moment M _B = 0.48 × 3 = 1.45tonfm bending stress of the pole column base of the pole column base is The shear stress degree is τ _b = Pmax / A = 0.014 t / cm ² ≦ 1.35 tonf / cm ² O
K

As described above, it is understood that there is no problem in the stress degree. On the other hand, the following calculation is made in order to examine the deformation. The calculation of the pole top deflection Umax is as follows. As described above, it is less than 1/200, and horizontal deformation of wooden houses during an earthquake can be suppressed.

For reference, another approach (Kiyoshi Mutoh “Dynamic analysis of structures”, shock wave vibration (Maruzen)) will be examined. The impulse of one pole is Assuming that the shock waveform is a sine wave, the collision time From T / τ = 4.00, the impact coefficient ・ φ becomes Umax = 1.28cm from φ = 0.92 Umax = φPmax / Ks
It turns out that there is not much difference with 1.39cm.

Tables 2 and 3 below show calculation examples.

[0067]

[Table 2]

[0068]

[Table 3]

The horizontally long plate 12 provided on the pole 2 is not necessarily required to be horizontal, but may be V or X-shaped or another shape. The same applies to the horizontally long plate 8 in the first embodiment.

The pole 2 can be aesthetically applied to a steel pipe with a makeup 24 made of aluminum, stainless steel, plastic, wood or the like. 22 and 23 show examples of applying such makeup 24.
FIG. 22 shows the case of the tight type of the first embodiment, and FIG.
Is the case of the bound type of the second embodiment.

[0071]

As described above, the external reinforcing method for a wooden house according to the present invention can provide an effective measure for preventing the house from being "pawed" even with a pulse-like vibration.
Since it is only necessary to provide a pole on the outer periphery of a wooden house, it can be realized inexpensively, easily, and in a short construction period. In addition, in the case of an existing wooden house, it can be realized as it is, even in the case of a new wooden house, only a small addition is required.In addition, the appearance is good because the wooden house does not hide greatly even by installing poles It is. In addition, there are places with strong winds in the Kansai and Kyushu regions, and poles can also be used for wind resistance.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of an external reinforcing method for a wooden house of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 1;

FIG. 5 is an explanatory view from the side showing the first embodiment of the external reinforcing method for a wooden house of the present invention.

FIG. 6 is an explanatory view from the plane direction showing the first embodiment of the external reinforcing method for the wooden house of the present invention.

FIG. 7 is a plan view of a fastening portion of a pole to a house.

FIG. 8 is a front view of a fastening portion of a pole to a house.

FIG. 9 is a perspective view of a fastening portion of a pole to a house.

FIG. 10 is a side view of a fastening portion of a pole to a house.

FIG. 11 is a side view showing a second embodiment of the external reinforcing method for a wooden house of the present invention.

FIG. 12 is a sectional view taken along line DD of FIG. 7;

FIG. 13 is an enlarged side view of a main part showing a second embodiment of the external reinforcing method for a wooden house of the present invention.

FIG. 14 is a plan view of a pole top according to the second embodiment.

FIG. 15 is a front view of a pole top according to the second embodiment.

FIG. 16 is a perspective view of a pole top according to the second embodiment.

FIG. 17 is a side view of a pole top according to the second embodiment.

FIG. 18 is an explanatory side view showing a second embodiment of the external reinforcing method for a wooden house according to the present invention.

FIG. 19 is an explanatory plan view showing a second embodiment of the external reinforcing method for a wooden house according to the present invention.

FIG. 20 is a plan view when the second embodiment of the external reinforcing method for a wooden house of the present invention is applied to an actual house.

FIG. 21 is an external perspective view showing a modification of the second embodiment of the external reinforcing method for a wooden house of the present invention.

FIG. 22 is a perspective view of the first embodiment showing an example of using a makeup pole.

FIG. 23 is a perspective view of a second embodiment showing an example of using a makeup pole.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Wooden house 1a ... 1st floor part 1b ... 2nd floor part 1c ... Corner part 2 ... Pole 3 ... Rebar 4 ... Rooted body 5 ... Cloth foundation 6 ... Base 7 ... Post-installed anchor 8 ... Horizontal plate 9 ... 2nd floor 10 ... wooden body difference 11 ... cap 12 ... horizontally long plate 13 ... through bolt 14 ... receiving plate 15 ... outer wall protection plate 16 ... metal wire 17 ... joist 18 ... large beam 19 ... pillar 20a, 20b ... angle material 21 ... joining plate 22 … Screw bolt 23… Flange 24… Face

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Kazuyoshi Uchida 8-14-14 Ginza, Chuo-ku, Tokyo Inside Shik Institute Inc. (72) Inventor Yuzo Suzuki 8-14-14 Ginza, Chuo-ku, Tokyo Inside the Shike Institute (72) Inventor Morio Yamashita 8-14-14 Ginza, Chuo-ku, Tokyo Inside the Shike Institute (72) Yoshio Kawamoto 8-14-14 Ginza, Chuo-ku, Tokyo (72) Inventor Hiroshi Inoue 1-2-10 Minamishinmachi, Chuo-ku, Osaka-shi, Osaka Toyo Shutter Corporation (72) Inventor Masatoshi Yanase 2-15-11 Yokodai, Isogo-ku, Yokohama-shi, Kanagawa Inside the Yanase Institute of Architecture (72) Inventor Takaharu Saito 4-5-8 Ogaya, Kamakura City, Kanagawa Prefecture F-term in Saito Construction Co., Ltd. 2E176 AA09 BB28

Claims (6)

[Claims] 1. A plurality of poles which are erected at the outer periphery of a wooden house with the lower part buried in the ground under the ground so as to surround the periphery of the wooden house with a mutual interval therebetween, and the pole is provided at the second floor position. External reinforcement method for wooden houses, characterized by being tightly connected with wooden houses. 2. The method according to claim 1, wherein the pole is provided with a horizontally long plate, and the pole is connected to the wooden house via the plate. 3. A plurality of poles which are erected at the outer periphery of the wooden house with the lower part buried underground so as to surround the periphery of the wooden house with a mutual interval therebetween. Exterior reinforcement method for wooden houses, characterized in that a horizontally long plate to be received in case of collapse is provided close to the wooden house. 4. The method of external reinforcement of a wooden house according to claim 3, wherein the poles erected at intervals are connected to each other by a metal wire. 5. The method according to claim 1, wherein the pole is connected to a foundation as required. 6. The external reinforcement method for a wooden house according to claim 1, wherein the pole is extended to a second floor portion as required.