JPH09228386A - Foundation construction method for base isolation structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify work for foundation construction and also construct a base isolation structure. SOLUTION: Rubble stones are laid on the dug down ground, concrete is placed on the rubble stones, a curl is embedded in the solidified concrete 13, a bolt is screwed on the curl, a separator is installed through a nut, and further footing frames 4, 4' having connecting members 5, 5' screwed on the back thereof are clamped by the separator 15 and assembled through a separator 7. Rising frames 3, 3' are assembled on the frames 4 through a separator 6, concrete is placed thereon, a steel bolt is embedded in the central inner part of the frame, and further an upper frame 2 having a hemispherical recessed surface 2a is fitted from above. A hemispherical projected surface 9, a spring 10 and a foundation frame 1 where a projected bolt 11 is mounted are pivoted from above with the substantially recessed and projecting surfaces joined to each other. A groundsill 8 is inserted in the projected bolt 11, and a nut 12 is screwed so that the foundation and the groundsill 8 are connected to each other by consolidation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a basic construction method for a seismic isolation structure in a building.

[0002]

2. Description of the Related Art Conventionally, the basic construction method of a building is such that a footing frame is assembled, concrete is poured, and solidified to dismantle the frame, and then a standing frame is assembled and concrete is poured and solidified. After disassembling the frame, further fixing the fixed wood to the rising upper end, after finishing the top end with mortar,
It was finished by removing the fixed tree.

In the conventional seismic isolation structure, there is known a method in which a laminated rubber in which thin iron plates and rubber are alternately stacked is used to lengthen the period of shaking and a steel damper absorbs the vibration of the earthquake.

[0004]

The conventional basic construction method requires many working days in order to repeat the same work. Moreover, since the seismic isolation structure uses large dampers, it was suitable for relatively large-scale construction such as buildings and condominiums.

The present invention simplifies the work of foundation work and the work of seismic isolation structure at the same time, and is applicable to large-scale construction to general houses. Is to provide.

The description and illustration of the invention will be described as a fabric foundation for wooden construction.

[0007]

[Means for Solving the Problems] In order to achieve the above object, concrete which has been cast and solidified in advance is
Attach a separator that can move up and down, fix the footing frame, measure the horizontal level, then assemble a stand-up frame, place concrete and bury steel bolts inside the center of the foundation frame. The upper frame having the spherical concave surface is fitted. Then, a base frame having a spring and a semi-spherical convex surface projecting from the lower part is pivotally installed from the upper part of the upper frame with a substantially concave and convex surface joined, and the base frame and the base are inserted into the projecting bolts and steel bolts. Then, screw in the nut to solidify,
Connect foundation and foundation.

The foundation solidified by pouring concrete is integrally finished without disassembling the foundation frame.

Further, in order to connect the foundation and the building, the upper portion of the steel bolt projecting from the soil is fixed and connected to the building studs, pipe pillars, through pillars, etc. by using fixing fittings.

[Action]

By combining a semi-spherical concave surface with a semi-spherical convex surface having a relatively small diameter, the substantially concave surface acts as a rocking groove, and in the case of vertical shaking during an earthquake,
By the action of the spring and the spring provided in the central portion of the steel bolt, the vibration can be absorbed, and in the case of rolling, the substantially concave surface can be slid to disperse the vibration.

At the time when the earthquake stops, the building will be returned to its normal state and retained due to the restoring properties of the steel bolts and springs and the natural return of the substantially concave surface.

[0012]

Embodiments will be described with reference to the drawings.
As shown in FIG. 1, crushed stones 14 are laid on the dug ground, concrete 13 is placed on the ground, solidified and then attached with separators 15, and the connecting members 5 and 5 ′ are previously attached to both ends of the separator 15. The footing frames 4 and 4 ′ screwed together are sandwiched, and the separator 7 is connected to the connecting member 5,
Fit in 5'and fix. As for the rising frames 3 and 3 ', the separator 6 is fitted and supported by the connecting member 5 "in the same manner as described above. Further, concrete is placed in the assembled frame,
The upper frame 2 having the semi-spherical concave surface 2a formed therein is fitted, and the base frame 1 having the spring 10, the bolt 11 and the semi-spherical concave surface 9 attached thereto is pivotally installed by being substantially concave-convex-bonded to the base frame 1. The bolt 8 is inserted and the base 8 is attached. And nut 1
2 is screwed to the bolt 11 and is solidified to connect the foundation and the base 8.

In FIG. 2, concrete is placed in the combined footing frames 4 and 4'and the rising frames 3 and 3 ', steel bolts 16 are further embedded, and the upper frame 2 is fitted from above. Let Then, the steel bolt 16 that is projected
Then, the base frame 1 is inserted, the base 8 is further inserted into the steel bolt 16, and the nut 26 is screwed to fix the base 8. 1 and 2. Both, the concrete in the foundation frame and the reinforcement of the reinforcing bars are omitted.

In FIG. 3, a connecting member 5 "is screwed on the rear surface of the rising frame 3. On the front surface of the connecting member 5",
A two-step circular fitting hole is formed, and a separator 6 having semi-spherical ends at both ends is fitted into the hole. A notch is formed in the semi-spherical portion of the tip portion of the separator 6 for the purpose of contracting at the time of fitting to enable easy fitting.

In FIG. 4, solidified concrete 13
The curl 19 is embedded in the
The nut 17 is screwed, the separator 15 is attached, and the nut 17 'is screwed. This is the nut 17, 1
7'rotate to move the separator 15 up and down,
This is for adjusting the unevenness of the concrete 13 with the separator 15 so that the foundation frame is constructed horizontally.

In FIG. 5 (a), the base frame 1, the upper frame 2 and the rising frame 3 are connected to each other by providing concave and convex surfaces on the periphery of each frame and fitting and connecting them. The connecting portion facing the outer surface of the foundation frame serves as a waterproof when pouring concrete, and a sealing material 20 is attached for the purpose of decorative finish.

As shown in FIG. 5B, when the rising frame 3 and the footing frame 4 are fitted together, a recess is formed as in the case of FIG.
Fit and connect the convex surfaces.

In FIG. 6, when the respective foundation frames and foundation frames are constructed in accordance with the finished size of the foundation, the foundation frames and foundation frames may be cut, but in that case, the foundation frames and foundations The concave and convex surfaces provided on the frame will be deleted. In this case, each frame is connected by inserting a cylindrical connecting member 21 having a circular partition plate in the center into the insertion holes 22 and 22 'provided in each frame. To do. The insertion holes 22 and 22 'are provided at positions where they can be fitted in a fixed position.

In FIG. 7, concrete 13 is cast on the upper part of the cobblestone 14 and solidified, and then the separator 15,
15 'is attached, footing frames 4 and 4'are tightly attached, and further, the rising frame 3 is assembled, concrete is poured, and the steel bolt 16 is buried, and both parts form the semi-spherical concave surface 2a. The upper frame 2 is fitted. Further, the base frame 1 provided with each member in the lower part is pivotally installed from the upper part by being substantially concave and convex. Then, the base 8 is inserted into and mounted on the steel bolts 16 and the bolts 11 and 11 ′ that project from the base frame 1. Furthermore, the bolts 11 and 11 'and the steel bolt 16 in the protruding state
The nuts 12, 12 ′ and 26 are screwed on and fixed to connect the foundation and the base 8.

In FIG. 8, the base 8 mounted on the base frame 1
Is fixed by the nut 26 as described above, and the steel bolt 16
The fixing metal fitting 23 is attached to the
4'is inserted into the stud 27, nuts 25 and 25 'are screwed and fixed, the steel bolt 16 is fixed to the stud, and the foundation and the building are connected.

[0021]

Since the present invention is constructed as described above, the following effects are possible.

Footing with one concrete placement
It is possible to finish up the three parts at the top and the top at the same time and without dismantling the foundation frame, and at the same time, to construct a seismic isolation structure.

By joining the semi-spherical concave surface formed on the upper frame and the semi-spherical convex surface pivotally provided on the base frame, the substantially concave surface acts as a rocking groove to prevent lateral vibration. In case of an earthquake, it is possible to disperse the vibration of the earthquake by sliding the concave surface.

In the case of vertical vibration, the spring provided in the central portion of the steel bolt and the spring provided pivotally on the base frame can be used together to absorb the vibration during an earthquake. . The shape of each spring is a conical shape, and this shape is for improving contractility.

When the earthquake stops, the concave surface forming a hemispherical shape will return to the original central portion by natural return along with the resilience of the steel bolt and spring.

Further, even if a strong earthquake occurs, the foundation and the building are firmly connected by the steel bolts, so that there is no deviation between the foundation and the building.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a foundation.

FIG. 2 is a vertical sectional view of a foundation.

FIG. 3 is a partially enlarged vertical sectional view.

FIG. 4 is a partially enlarged vertical sectional view.

FIG. 5A is a partially enlarged vertical sectional view.

FIG. 5B is a partially enlarged vertical sectional view.

FIG. 6 is a partially enlarged transverse sectional view.

FIG. 7 is a partially sectional elevation view of the assembled base frame.

FIG. 8 is a partially enlarged transverse sectional view.

[Explanation of symbols]

 1 Base Frame 2 Upper Frame 2a Semicircular Spherical Concave Surface 3, 3'Standing Frame 4, 4'Footing Frame 5, 5 ', 5 "Connection Member 6 Separator 7 Separator 8 Base 9 Semicircular Spherical Convex Surface 10 Spring 11 Bolt 12, 12 'Bolt 13 Concrete 14 Kuriishi 15, 15' Separator 16 Steel bolt 17, 17 'Nut 18 Bolt 19 Curl 20 Sealing material 21 Connecting member 22, 22' Insert hole 23 Fixing metal 24, 24 'Bolt 25, 25' Nut 26 Nut 27 stud

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location E04H 9/02 331 E04H 9/02 331E F16F 15/04 8312-3J F16F 15/04 E 15/067 8312-3J 15/06 B

Claims (6)

[Claims] 1. The foundation frame is a footing frame (4, 4 ').
A basic construction method comprising a rising frame (3, 3 ′), an upper frame (2) having semispherical concave surfaces (2a) formed on both parts, and a base frame (1). 2. A semi-spherical concave surface according to claim 1 and a semi-spherical convex surface (9) projecting from a lower part of the base frame (1) are joined together to connect the foundation and the base. Basic method of construction. 3. In order to connect the foundation to the building, a projecting upper part of a steel bolt (16) installed at the center inside the foundation is fixed to a stud (27) of the building. At the time of fixing, the metal fixture (23) is attached to the steel bolt (16), the bolts (24, 24 ') are inserted, and the nuts (25, 2) are inserted.
5 ') is a basic construction method in which it is firmly screwed and fixed. 4. The footing frame (4,
4 ') and the connecting members (5, 5', 5 ") screwed on the rear surface of the rising frame (3, 3 '), and the separators (6, 7) having both ends formed hemispherical shape, Connection member (5,
5 ', 5'') basic construction method. 5. The footing frame (4,
4 ') is a foundation construction method in which it is sandwiched and fixed to both ends of the separator (15) attached to the lower part of the foundation. 6. A concrete (1
3) The curl (19) is embedded in a solidified state, the bolt (18) is screwed, the nut (17) is screwed, and the separator (15) according to claim 5 is inserted. Let
Further, a nut (17 ') is screwed, and the separator (1
A basic construction method in which 5) is mounted so that it can move up and down.