JPH08199593A - Seismic device of structure - Google Patents

Abstract

PURPOSE: To provide a seismic device designed for a high rising structure or heavy structure or an atomic power plant structural body or an oil tank which may cause a disaster when it is collapsed, and especially, a seismic device capable of withstanding vertical vibrations caused by an earthquake with a vertical shock. CONSTITUTION: An excavation hole 3 is drilled directly from a surrounding area of a side wall of an existing structural body to be protected to an immovable basement at the underground depth based on a curved slanting excavation method. An anchor material 5 which bundles a steel bar material 4 is inserted from the upper part of the excavation hole and buried to the lower part of the excavation hole 3 which reaches the immovable basement 2. A curved anchor (b), which fills up the clearance between the anchor material 5 and the excavation hole 3 with concrete 6 is radially installed in broadening the lower end so that it may envelop a foundation 7 of an existing structural body (a). The upper and lower parts of the curved anchors 7 are fixedly connected to the foundation 7 or the lower part of the existing structural body (a) and the immovable basement 2, thereby protecting the existing structural body by relaxing and containing vertical and horizontal vibrations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic device for special structures such as high-rise structures, heavy structures, nuclear power plants, oil tanks, etc. It is related to the earthquake-resistant equipment of objects.

[0002]

2. Description of the Related Art As shown in the damage caused by the Great Hanshin Earthquake when a high-rise building is subjected to an impact of a direct earthquake of magnitude 6-8, the high-rise building has solid foundations. Even buildings have collapsed.

[0003] If this extends to a nuclear power plant structure, particularly a special structure that is dangerous when it collapses, such as a furnace body or an oil tank that stores a large amount of oil, the damage is not merely a collapse, it is enormous. It will cause secondary damage.

It is a technical problem of the present invention to provide a structure earthquake-proof device that solves this problem.

[0005]

The gist of the present invention will be described with reference to the accompanying drawings.

An excavation hole 3 is drilled from immediately below the side wall periphery 1 of the existing structure a to be protected to the immovable foundation 2 in the deep underground by the curved inclined excavation method, and reaches the immovable foundation 2 from the upper part of the excavation hole 3. An anchor material 5 in which a steel bar material 4 is focused is inserted and buried up to the lower part of the excavation hole 3, and a curved anchor body b in which a gap between the anchor material 5 and the excavation hole 3 is filled with concrete 6 is a base body 7 of the existing structure a. Radially so as to wrap around, and the lower part is arranged in a divergent shape, and the upper and lower parts of the plurality of curved anchor bodies b are fixedly connected to the base body 7 or the lower part of the existing structure a and the immovable base 2 to cause crustal movement. The present invention relates to a seismic resistant device for a structure, which is configured to reduce vertical vibration and lateral vibration to protect an existing structure.

Further, a drilling hole 3 is drilled from directly below the foundation body 7 of the new structure a'or directly below the side wall periphery to the immovable foundation 2 in the deep underground by the curved inclined excavation method, and the upper portion of this drilling hole 3 is immovable. The anchor material 5 focusing the steel bar material 4 is inserted and buried up to the lower part of the excavation hole 3 reaching the base 2, and the curved anchor body b in which the gap between the anchor material 5 and the excavation hole 3 is filled with concrete 6 is the new structure Radially surrounding the base body 7 of the body a ′ and arranging it downwardly in a divergent manner. The upper and lower parts of the plurality of curved anchor bodies b are the base body 7 or the lower part of the new structure a ′ and the immovable base 2. The present invention relates to an earthquake-proof device for a structure, characterized in that the structure is configured so as to be connected and fixed to a structure to protect the new structure by suppressing vertical vibration and lateral vibration due to crustal movement.

Further, in the case of a special structure a "which is dangerous when collapsed, the upper part of the curved anchor b is attached to the upper part of the special structure a" or is attached to the top to fix it. The present invention relates to the earthquake-proof device for a structure according to any one of claims 1 and 2.

[0009]

[Function] A plurality of curved anchor bodies b arranged radially
Reaches the immovable base 2 in a state in which the lower part is in a flared shape like a curved foot, and the upper and lower parts are excavated with the base member 7 or the lower part of the existing, new, or special structure a, a ', a ". Hole 3
Since it is connected and fixed to the vertical structure, the vertical gravitational pressure due to the crustal motion and the lateral gravitational force due to the lateral vibration are alleviated by the tensile action due to the reaction force of the plurality of curved anchor bodies b to prevent the collapse of the existing structure a and the new structure a ′. Block.

In this case, in the case of the special structure a ", the curved anchor b is attached to the upper portion of the special structure a" or is covered on the top of the special structure a "to prevent the collapse more reliably.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show two preferred embodiments of the present invention. FIGS. 1 and 2 are a first embodiment and FIG. 4 is a second embodiment.

An excavation hole 3 is drilled from immediately below the side wall periphery 1 of the existing structure a to be protected to the immovable foundation 2 in the deep underground by the curved inclined excavation method, and reaches the immovable foundation 2 from the upper part of the excavation hole 3. An anchor material 5 in which a steel bar material 4 is focused is inserted and buried up to the lower part of the excavation hole 3, and a curved anchor body b in which a gap between the anchor material 5 and the excavation hole 3 is filled with concrete 6 is a base body 7 of the existing structure a. Radially so as to wrap around, and the lower part is arranged in a divergent shape, and the upper and lower parts of the plurality of curved anchor bodies b are fixedly connected to the base body 7 or the lower part of the existing structure a and the immovable base 2 to cause crustal movement. It is configured to protect the existing structure by suppressing vertical vibration and lateral vibration.

Further, a drilling hole 3 is drilled from immediately below the foundation body 7 of the new structure a'or directly below the side wall periphery to the immovable foundation 2 in the deep underground by the curved inclined excavation method, and from the upper portion of this drilling hole 3 is immovable. The anchor material 5 focusing the steel bar material 4 is inserted and buried up to the lower part of the excavation hole 3 reaching the base 2, and the curved anchor body b in which the gap between the anchor material 5 and the excavation hole 3 is filled with concrete 6 is the new structure Radially surrounding the base body 7 of the body a ′ and arranging it downwardly in a divergent manner. The upper and lower parts of the plurality of curved anchor bodies b are the base body 7 or the lower part of the new structure a ′ and the immovable base 2. It is connected and fixed to the structure to protect the new structure by suppressing vertical and lateral vibrations due to crustal movement.

In the case of a special structure a "which is dangerous when collapsed, the upper part of the curved anchor b is attached to the upper part of the special structure a" or is attached to the top part of the special structure a ".

In each case, the drilling hole 3 is formed by a petroleum chisel machine or a similar chisel machine to form a plurality of pumping wells from an offshore base to a submarine oilfield, and spread downward like a octopus foot. By applying the structural mechanics in which the pumping pipe hung on the ground withstands heavy excavation and pumps oil for a long period of time, the drilling hole 3 is excavated to the immovable foundation 2 in the deep underground ranging from 100 m to 1000 m underground by the curved slope excavation method. The protective steel pipe 8 is inserted into the excavation hole 3, and the excavation hole 3 and the protective steel pipe 8 are inserted.
Cement milk is packed in between and hardened.

The inside of the protective steel pipe 8 is washed with water to remove the steel bar 4
(A carbon rod or titanium rod is used in combination or in place of them to improve the strength and rust resistance.), And the anchor material 5 formed by winding the steel wire 4'is inserted into the protective steel pipe 8 to form the protective steel pipe. Cement milk was pressure-injected into the gap between 8 and the anchor member 5 and the gap between the bar steel member 4 and the steel wire 4'to integrally harden the whole and to expand it by curving downward from several to several tens. A curved anchor body b like a octopus foot is formed.

This curved anchor b is provided radially from the side wall periphery 1 of the existing structure a to the immovable base 2, and in the case of the new structure a ′, directly below the new structure a ′ or around the side wall 1 thereof.
From the same way.

The upper part of the curved anchor body b is connected and fixed to the lower part of the existing structure a and the new structure a'or the respective base body 7, and the lower part of the curved anchor body b is obliquely crossed with the immovable base 2. No matter how strong a seismic shock wave is generated by the crustal movement due to the connection, no matter whether the existing structure a or the new structure a ′ is shaken vertically or laterally, it is a curved anchor arranged like a pair of rattles. The body b generates a tensile reaction force against the vibration of the existing structure a or the new structure a ′, and the immovable foundation 2
With the root firmly fixed, the seismic motion will be absorbed and mitigated, and the vibration will be suppressed. The lower connection of the curved anchor body b is such that the lower portion of the curved anchor body b is curved so as to be in the same direction as the immovable base 2, so that when the immobile base 2 is near horizontal, the curved anchor body b is also inserted near horizontal. The arrangement makes the seismic effect even better.

Further, as shown in FIG. 5, if the curved anchor bodies b are separately branched and inserted into the plurality of immovable bases 2, the seismic resistance is further improved, and when the immovable bases 2 are inclined, they are curved. The anchor bodies b are connected in a stable arrangement.

The second embodiment shown in FIG. 4 is a special structure a "such as an oil tank or a nuclear power reactor body which is dangerous when collapsed.
Is a structure in which the curved anchor body b is not installed from the existing or new structure a, a ′ lower part but is attached to the upper part of the special structure a ″ itself, or the curved anchor body b is also covered on the top part, A stronger seismic device can be obtained by connecting and fixing it on the way, at the bottom, or to the foundation 7. Although it is covered in a curved state in Fig. 4, it can be covered so as to fit along the outer wall of the special structure a ". good.

In both the first and second embodiments, the length of the excavation hole 3 and the length of the protective steel pipe 8 are the existing structure, the new structure, the special structure a,
The length is determined by selecting the immovable base 2 having a sufficient depth to protect a ', a "from an earthquake. Also, the curved anchor body b is curved downward like a octopus foot and expanded. Since it secures the fixing force over the expanded area, it will be a stable structure earthquake-proof device.

In FIG. 1, reference numeral 9 is an ordinary foundation ground 10.
Anchor pile hanging down to.

[0023]

Since the present invention is constructed as described above, it becomes an excellent seismic resistance device for a structure in which existing structures, new structures and special structures do not collapse even in the event of a large earthquake.

[Brief description of drawings]

FIG. 1 is a partially enlarged explanatory sectional view showing a first embodiment of the present invention.

FIG. 2 is an explanatory plan view showing the first embodiment of the present invention.

FIG. 3 is a sectional view of a curved anchor body of the present invention.

FIG. 4 is an explanatory diagram of a second embodiment.

FIG. 5 is an explanatory view of another embodiment in which the curved anchor body of the present invention is connected to a stationary base.

[Explanation of symbols]

 a Existing structure a'New structure a "Special structure b Curved anchor body 1 Side wall periphery 2 Immovable foundation 3 Drilling hole 4 Steel bar 5 Anchor material 6 Concrete 7 Foundation

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G21C 13/024

Claims (3)

[Claims] 1. A drilling hole is drilled from immediately below the side wall of an existing structure to be protected to the immovable foundation in the deep underground by the curved slope excavation method, and the excavation hole reaching the immovable foundation from the upper part of the excavation hole is formed. An anchor material that bundles steel bars is inserted and buried up to the lower part, and a curved anchor body that fills the gap between the anchor material and the excavation hole with concrete is radiated so as to wrap around the foundation of the existing structure and the lower part is arranged in a flared shape. The upper and lower parts of the curved anchors are connected and fixed to the lower part of the foundation or the existing structure and the immovable base to reduce the vertical vibration and lateral vibration due to the crustal movement to protect the existing structure. An earthquake-proof device for structures, which is characterized in that 2. An excavation hole is drilled from directly below the foundation of the new structure or directly around the side wall to the immovable foundation in the deep underground by the curved inclined excavation method, and reaches the immovable foundation from the upper part of this excavation hole. Anchor material that bundles steel bars is inserted and buried up to the bottom of the excavation hole, and the curved anchor body that fills the gap between the anchor material and the excavation hole with concrete is radially expanded so as to wrap around the foundation of the new structure and spread downward. The upper and lower sides of the curved anchors are connected and fixed to the lower part of the foundation or the new structure and the immovable base to alleviate vertical and lateral vibrations due to crustal movements, and form the new structure. A seismic device for structures, which is configured to protect. 3. In the case of a special structure which is dangerous when collapsed, the upper part of the curved anchor body is attached to the upper part of the special structure or is attached to the top part to fix the structure. The earthquake-proof device for a structure according to any one of 2 above.