JP2000320755A - Base isolation pipeline mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve stable and accurate base isolation by a simple and compact configuration so as to prevent the damage of a pipeline due to an earthquake. SOLUTION: A joint axial line face II in one set of end part side joints for X-axis and Y-axis 2b, 2b positioned on both end sides of pipe passage part bodies 11, 12 is positioned on one side of a reference line face I having axial lines in both end parts of the pipe passage part bodies 11, 12 provided in a building and a foundation part, and a joint axial line III of an intermediate joint for X-axis and Y-axis 2c provided in an intermediate part of the end part side joints for X-axis and Y-axis 2b, 2b is positioned on a reference line face side I having axial lines in both end parts of the pipe passage part bodies more than the axial line face II of the above-mentioned end part side joints for X-axis and Y-axis 2b, 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation pipe mechanism, which achieves a stable and accurate seismic isolation purpose with a relatively simple and compact structure, and appropriately avoids damage to the pipeline during an earthquake. It is intended to provide a mechanism capable of performing such operations.

[0002]

2. Description of the Related Art In the event of an earthquake, there is a high possibility that various structures or facilities set on the ground or in the ground will be damaged or destroyed. It has just been done. That is, rubber materials, steel materials, lead and the like are appropriately used in combination to attenuate the energy of earthquakes, and some proposals have been made.

On the other hand, it is indispensable today to supply fuels such as cold water, hot water, steam, cooling water, drinking water and other domestic water and gas to various buildings, and fire fighting water in the event of an earthquake or other disaster. Supply is essential, and it is necessary to feed these by pipes and to discharge wastewater after use, etc. In any case, pipes are generally used. However, it is necessary to prevent or avoid damage in the event of an earthquake in such pipelines, and damage to pipelines causes large amounts of gas and water to dissipate due to cracks, etc. Even if there is no breakage of the pipeline, a small number of cracks can cause a wide range of dangerous situations.

[0004] Therefore, some measures have been taken to prevent damage to pipelines during an earthquake.
For example, rubber and other flexible members have been used to absorb the displacement at the time of an earthquake between the pipes on the building side and the pipes on the foundation section side. Various practical studies have been conducted on the displacement amount during an earthquake and the performance of the joint.

Japanese Unexamined Patent Application Publication No. 10-160039 has recently disclosed a method for preventing the above-mentioned damage to a pipeline. In this document, "a first structure which relatively moves via a seismic isolation device during an earthquake" is disclosed. Such as a seismic piping system for a base-isolated building, which is provided between an object and a second structure and comprises a plurality of straight pipes, a plurality of curved pipes, and a plurality of rotatable joints. ing.

[0006] Further, "the building which is the first structure is the second structure.
Was installed via the seismic isolation device on the foundation which is the structure of the above, and "the upper building which is the first structure is placed on the lower building which is the second structure. , Installed through the seismic isolation device ", or" the first structure and the second structure are respectively built on a foundation via the seismic isolation device ". Has been announced as a feature point.

[0007]

The above-mentioned conventional flexible member mainly composed of a rubber material, which is used in combination with other members, has a disadvantage in terms of equipment that requires a large mounting space. . In addition, the above-described conventional technology requires a gantry and other auxiliary equipment, and has disadvantages such that the equipment must be abnormally large due to a high reaction force at the mounting portion and the like. In general, it has a drawback that it is difficult to obtain a seismic isolation result as designed when an actual earthquake occurs because of its directionality and the like.

[0008] More recently published Japanese Patent Application Laid-Open No. 10-1600.
No. 39 is basically based on the applicant's
Published by the Japan Society of Air Conditioning and Sanitary Engineers, the Disaster Investigation and Response Committee, and the Subcommittee on Equipment and Seismic Countermeasures published in July and November of the year, or published by the Public Building Association of Japan (" 1996 Building Equipment Seismic Design Guidelines, "
It is the same as published as “Comprehensive Seismic Planning Standards for Government Office Facilities and the Commentary”), and it cannot be made particularly special.

[0009]

SUMMARY OF THE INVENTION The present invention has been made by studying to solve the above-mentioned problems in the prior art, and a specific connecting pipe is provided between pipes to be connected. By arranging and connecting a plurality of joint means in a specific configuration relationship and effectively eliminating expansion and contraction or torsion at the time of an earthquake, it has succeeded in obtaining favorable earthquake resistance as follows. is there.

(1) One set of X-axis and Y-axis ends located on one side of a reference line plane having both ends of the pipe body provided on the building and the base part, located on both ends of the pipe body. The X-axis and Y-axis end joints for the X-axis and Y-axis intermediate joints provided in the middle of the X-axis and Y-axis end-side joints are located along with the joint axis surfaces of the outer joints. A seismic isolation pipe mechanism which is located closer to a reference line face having the above-mentioned pipe section body both-ends axis than a side joint axis face.

(2) The seismic isolation pipe body according to the above (1), wherein Z-axis joints are provided at both ends of the pipe body provided on the building and the foundation.

(3) The above-mentioned (1) or (2), wherein a pipe section body formed by connecting a plurality of straight pipe sections and a curved pipe section sequentially is formed in a planar annular shape. The seismic isolation pipe body described in any of the above.

(4) A curved pipe portion is used as a corner portion in a plan view, and a straight pipe portion is connected between the curved pipe portions to form a joint portion at each of the straight pipe portions in the pipe body continuously formed as an annular shape. The seismic isolation pipe mechanism according to any one of the above (1) to (3), wherein a body is disposed.

(5) One end of the pipe section body formed by connecting the straight pipe section and the curved pipe section in a planar quadrilateral ring is used as an inlet, and the other end is used as an outlet, and these pipes are connected to each other. Any one of the above-mentioned items (1) to (4), wherein a joint portion is provided on each side portion forming the quadrangular annular portion between the inlet and the outlet as described above. The seismic isolation pipeline mechanism according to any one of the above.

(6) In the tubular part which is connected and molded as a quadrilateral annular shape in the plane, the intermediate part and the joint parts on the inlet and outlet sides adjacent to the intermediate part are linearly arranged on the side. The seismic isolation pipeline mechanism according to any one of the above (1) to (5).

[0016] (7) A joint portion in which both ends are formed as seal lip portions and a packing having a bore having a lumen through which a fluid in a pipeline acts is mounted between the seal lip portions. Said (1)-
(6) The seismic isolation pipeline mechanism according to any one of the above (6).

(8) The packing accommodating chamber is formed at an intermediate portion of the housing, and a fitting portion is formed on both sides of the packing accommodating portion to be engaged with a locking portion of a pipe to be connected. (7) The seismic isolation pipeline mechanism described in the paragraph.

(9) The seismic isolation pipe mechanism according to the above (8), wherein a lubricating member is provided at the locking portion of the pipe to be connected.

According to the present invention as described above, one set of a pair of pipes located at both ends of the pipe body is provided on one side of a reference line plane connecting both ends of the pipe body provided at the building and the foundation. X
The X-axis, the joint axis of the X-axis and the Y-axis intermediate joint provided between the X-axis and the Y-axis end-side joint. By being located on the reference line surface side having the above-mentioned end portions of the pipe section body with respect to the Y-axis end side joint axis surface, a relatively short and small set of members allows the X-axis and Y-axis to be pantographed. A shock absorbing mechanism is formed by the opposing bending and stretching actions to obtain an effective and stable seismic isolation mechanism, and to exert an economically favorable seismic isolation action.

In the above-described seismic isolation pipe mechanism, by providing joints for the Z-axis at both ends of the pipe body provided on the foundation of the building, the X-axis and the Y-axis can be effectively used as well as the Z-axis. Get seismic protection and achieve the exact purpose of seismic isolation.

Further, according to the present invention, a plurality of straight pipe sections and a curved pipe section are sequentially connected to each other, and the pipe section body is formed in a continuous annular shape in a plane. It will be formed compactly, so it is easy to set up and connect between the underground structure piping and various buildings, and to be affected by the direction of shaking when an earthquake occurs. No seismic isolation pipeline is provided at low cost.

Further, according to the present invention, a curved pipe portion is used as a corner portion in a plan view, and a straight pipe portion is connected between the curved pipe portions to form an annular continuous pipe portion. By arranging the joint portions, a coupling function of the joint portions is accurately obtained, and a preferable mechanism is provided in terms of strength, and a stable seismic isolation action is secured.

Further, one end of the pipe section body formed by connecting the straight pipe section and the curved pipe section as a quadrilateral annular shape is used as an inlet and the other end is used as an outlet, and the inlets are used. As described above, the joint portions are disposed on the respective sides forming the quadrilateral-shaped annular portion between the outlet and the outlet, so that a balance can be obtained in the annular flow path system from the inlet to the outlet. Stable strength is obtained, and the connection characteristics in each joint part are effectively exhibited.

It is to be noted that the intermediate portion and the joint portions on the inlet side and the outlet side adjacent to the intermediate portion are linearly arranged in a side view. The present invention provides a highly durable pipeline mechanism that forms a more accurate connection and connection state, performs a sufficient vibration absorbing action against vibrations and the like, and damages the pipeline.

Further, by using a joint body in which both ends are formed as seal lip portions and a packing for setting a fluid for operating the fluid in the pipeline is mounted between the seal lip portions, the fluid pressure in the pipeline is utilized. A joint coupling mechanism that achieves a stable sealing function, forms a stable seal without particularly tightening, and does not suffer damage or deformation of the joint part during vibration because it is a seal that does not use special tightening means. I will provide a.

Further, by forming the packing accommodating chamber in the middle part of the housing and forming the fitting portion which engages with the locking portion of the pipe to be connected on both sides of the packing accommodating chamber, A mechanically unrestricted joint mechanism under the condition of using fluid pressure in a pipe is accurately set between both pipes to be connected.

By providing the lubricating metal member at the locking portion of the pipe to be connected, an effective sliding action between the locking portion and the housing during vibration can be achieved while ensuring an effective sealing relationship. Smooth flexibility makes it possible to properly prevent breakage, deformation and loss during an earthquake.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the accompanying drawings, a specific embodiment of the present invention as described above will be described. The one shown in FIGS. In accordance with the present invention, an entrance pipe body 11 rising from a building foundation or the like at a lower portion and an outlet pipe body 12 leading to a ground building or the like provided on the upper portion in the drawing are provided. Although the seismic duct mechanism 10 is set directly,
In the present invention, the joints 2b and 2c for the X-axis and the Y-axis and the joint 2a for the Z-axis to cope with the vibration of the X-axis in the vertical direction, the Y-axis in the horizontal direction, and the Z-axis in the depth direction of such a pipeline mechanism 10.
The configuration for that is as follows.

As shown in FIG. 1, the pipe mechanism 10 is composed of a first bent short pipe 1a and a second bent short pipe 1b having a short inlet and connected to an inlet pipe body 11. A joint portion 2a for the Z-axis is provided therebetween, and as shown in FIG.
Between the bent short tube 1b and the third bent short tube 1c,
A shaft joint part body 2b is provided, and the third bent short pipe 1 is provided.
c is a fourth bent short pipe 1d connected via a first interposed pipe 3a interposed in the pipe system and a fifth bent short pipe 1e connected to the bent short pipe 1d. Another X axis between,
A Y-axis intermediate joint part 2d is provided.

With respect to the outlet pipe body 12 opposed to the inlet pipe body 11, the length of the outlet portion is reduced in a symmetrical manner to the above-described pipe connection structure to the inlet pipe body 11. Seventh
A fifth joint 2a is provided between the bent short pipe 1g and the eighth bent short pipe 1h opposed thereto, and the fifth bent short pipe 1g is connected to the sixth bent short pipe 1f. A fourth joint portion 2b is provided between the second bent short tube 1d and the fifth bent short tube 1e connected via a second interposed tube 3b. As described above, the third joint portion 2 is connected to the fourth bent short pipe 1d connected to the bent short pipe 1e.
Although a series of pipes from the inlet pipe section 11 to the outlet pipe section 12 are appropriately connected to each other, the specific arrangement relationship thereof is as follows. In addition, when the above-mentioned inlet pipe body 11 and outlet pipe body 12 are used as a water supply source or a drain pipe from a tank provided on an underground building or a rooftop, the inlet pipe body is opposite to the illustration. It is clear that the same applies when the outlet 11 is located above and the outlet pipe section 12 is located below.

That is, as shown in FIG. 1, the seismic isolation pipe mechanism of the present invention shown in FIGS. 1 and 2 uses the axes of the inlet pipe body 11 and the outlet pipe body 12 as reference lines, and Are located on one side of a plane including a reference line plane I... I, which is a plane sharing each of the reference lines, above and below the inlet pipe body 11 and the outlet pipe body 12 which are both ends of the pipe 10. The joint axis surfaces II... II of the X-axis and Y-axis end-side joints 2b and 2b are located at a position between the X-axis and Y-axis end-side joints 2b and 2b. Joint axis of one X-axis and Y-axis intermediate joint 2c
III, the inlet pipe section 11 and the outlet pipe at both ends of the pipe section above the joint axis surfaces II... II having the respective axes of the X-axis and Y-axis end side joints 2b, 2b. It is positioned on the reference line plane I ... I side of the road body 12.

The joint 2 for the X-axis and the Y-axis as described above
Although the Z-axis joint 2a can be adopted at an appropriate position with respect to b and 2c, a preferable disposition position of the Z-axis joint 2a is the position of the inlet pipe 11 as shown in FIGS. By selecting a position close to the outlet pipe 12, the influence of Z-axis vibration is effectively suppressed for the whole mechanism of the present invention, and X-axis and Y-axis vibration are reduced.

The seismic isolation pipe mechanism of the present invention connected as described above laterally overlaps the pipe in one and a half stages to two stages as can be understood from FIGS. 1 and 2. However, in plan view, a spiral continuous pipe formed in a ring shape as shown in FIG. 3 is formed, and therefore water flow or water continuous from the inlet pipe body 11 to the outlet pipe body 12 is formed. It is clear that air can be supplied, and a seismic isolation action with substantially no directionality can be obtained by the ring-shaped or spiral configuration as described above against vibrations caused by an earthquake.

In FIG. 1 described above, the joint axis III of the intermediate joint 2c for the X-axis and the Y-axis shares a reference line plane I... .. Indicates a case where it is located beyond the point I and greatly protrudes toward the reference line plane I... I side, whereby the seismic isolation effect on the X axis and the Y axis can be obtained efficiently. 5 and 6, the joint axis III of the X-axis and Y-axis intermediate joint 2c is changed to the X-axis and the Y-axis reference line plane II, as shown in FIGS. By keeping the reference line II within a range not exceeding the reference line planes I... I, the object of the present invention can be achieved with a more compact configuration than those shown in FIGS.

That is, the compactness in this case is as shown in FIG. 6, and the formation of a spiral pipe having a ring shape in plan view is the same as that of FIG. It is clear that the actions and objects of the present invention can be properly achieved even in a narrow space.

The joint 2 as described above in the present invention
Appropriate joints can be adopted for a to 2c, but a joint mechanism as shown in FIG. 4 is preferable as a mechanism for effectively and appropriately obtaining the function of the present invention. That is, the engaging portions 16, 16 are provided opposite to the opposed tubular members 15, 15 such as the above-mentioned bent short tubes 1a to 1h to be connected, and the engaging groove of the joint housing 4 formed as a divided portion. It is known that the locking portions 16, 16 are accommodated at 17, 17 and the divided housings 4, 4 are tightened by tightening means 6 such as bolts and nuts as shown in FIGS. However, a lumen 7 is formed in an intermediate portion of the split housings 4 and 4 so as to receive the U-shaped packing 5 and to face between the two pipe ends to which the lumen 7 of the packing is connected. The seal lips 8, 8 provided on both sides of the inner cavity 7 are joined and sealed to the outer surfaces of both pipes.

That is, when the fluid pressure in the pipe acts on the inner cavity 7, the sealing lips 8, 8 are pressed against the outer surface of the pipe to form a sealing relationship utilizing the fluid pressure in the pipe. A stable seal is provided under the condition that the bendability is maintained by the lumen 7 between the 15, 15, and a combined action occurs in the X-axis, Y-axis, and Z-axis directions as described above. It is clear that an appropriate sealing relationship is ensured in the event of a severe earthquake, and the object of the present invention is appropriately achieved. Further, in the present invention, the housings 4, 4 are tightened while the locking rings 18 provided on the two pipes 15, 15 are received in the engaging grooves 17 of the housing 4, and the locking rings 18 are provided. , 18 is provided with lubricating portion 14, so that the effects of joint portions 2a to 2c can be obtained more effectively.

That is, the lubricating member 14 as described above obtains a preferable sliding action between the housing 4 and the end portions of the two pipes 15, 15 at the time of the earthquake, and the housing 4 and the pipe at the time of the earthquake. 15 can be ensured, and the seismic isolation action can be accurately achieved. As the lubricating part 14 as described above, a copper alloy,
Boron nitride, oil-impregnated sintered metal, or synthetic resin materials such as Teflon and nylon can be used as appropriate.

In order to make the engagement assembly by the locking ring 18 using the lubricating portion 14 as described above accurately and firmly, and to ensure the above-mentioned sliding action, the present invention uses the locking. A short tube body 15a in which a ring 18 is formed integrally with a tube body is employed.
5a is manufactured separately from a general tube body 15 obtained in mass production. That is, since the locking ring 18 is integrally formed with the short tube portion 15a, it is strong. A smooth sliding action is ensured between them, and the above-mentioned sliding action is accurately obtained, thus effectively achieving the seismic isolation effect.

[0040]

According to the present invention as described above, effective seismic isolation with little direction can be effectively obtained, and damage to various pipelines can be effectively prevented by a simple and compact structure. This invention is industrially effective because it achieves the desired seismic isolation purpose and can appropriately prevent the occurrence of abnormal disasters.

[Brief description of the drawings]

FIG. 1 is a side view of one example of a seismic isolation pipe mechanism according to the present invention.

2 is another side view of the one shown in FIG. 1 from a direction perpendicular to FIG. 1;

FIG. 3 is a plan view of what is shown in FIGS.

FIG. 4 is a partial cross-sectional view showing one example of the joint portion shown in FIGS. 1 to 3;

FIG. 5 is a side view similar to FIG. 1 showing another configuration according to the present invention.

FIG. 6 is a plan view similar to FIG. 3 for the one shown in FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Bent short pipe 1a-1h Bend short pipe 2 Joint part 2a-2c Joint part 3 Interposed pipe 3a, 3b Interposed pipe 4 Joint housing 5 U-shaped packing 6 Tightening means 7 Lumen 8 Seal lip 9 Packing Accommodation room 10 Seismic isolation pipe mechanism 11 Inlet pipe body 12 Outlet pipe body 14 Lubricity member 15 Opposite pipe body 15a Short pipe body 16 Locking section 17 Engagement groove 18 Locking ring I Inlet pipe section Reference line surface having the axis of the body and outlet conduit body II End joint axis surface having the axis of the end-side joint for X-axis and Y-axis III Joint axis of intermediate joint for X-axis and Y-axis

Continuing from the front page (72) Inventor Koichi Futaki 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Teruo Fukunaga 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation Stock In-company (72) Inventor Yoichi Haga 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation Inside (72) Inventor Yuji Noda 1-14-7 Hirai, Kusatsu-shi, Shiga Prefecture (72) Inventor Kenjiya Shiga Shiga 63 Nimachicho, Moriyama-shi, Prefecture Twinstown H AZUI107 F-term (reference) 3H104 JA12 JB07 JC08 JC09 JD01 JD09 LF16 MA08

Claims (9)

[Claims] 1. A set of X-axis and Y-axis ends located on one side of a reference line plane having both ends of a pipeline body provided on a building and a foundation portion. The joint axis of the side joint is positioned, and the joint axes of the X-axis and Y-axis intermediate joints provided in the middle of the X-axis and Y-axis end side joints are respectively set to the X-axis and Y-axis end sides. A seismic isolation pipe mechanism which is located on the side of a reference line having axes of both ends of the pipe section body with respect to a joint axis plane. 2. The seismic isolation pipe body according to claim 1, wherein Z-axis joints are provided at both ends of the pipe body provided on the building and the foundation. 3. The pipe body according to claim 1, wherein a plurality of straight pipe sections and a curved pipe section are sequentially connected to each other, and the pipe section body is continuously formed as a planar annular shape. Seismic isolation pipe body. 4. A joint portion is formed on each of the straight pipe portions of a pipe portion which is formed in a continuous manner as an annular shape by using curved pipe portions as corner portions in a plane and connecting and forming straight pipe portions between the curved pipe portions. The seismic isolation pipe mechanism according to any one of claims 1 to 3, wherein 5. A pipe section formed by connecting a straight pipe section and a curved pipe section as a quadrilateral ring in one plane is used as an inlet and the other end is used as an outlet. The joint part is disposed on each side part forming the quadrilateral annular part between the outlet and the outlet as described above, The joint part is provided. Seismic isolation pipeline mechanism. 6. A tubular part which is connected and molded as a quadrilateral annular shape in a plane, wherein an intermediate part and joint parts on an inlet side and an outlet side adjacent to the intermediate part are linearly arranged in a side view. The seismic isolation pipe mechanism according to any one of claims 1 to 5, characterized in that: 7. A joint body in which both ends are formed as seal lip parts and a packing having a bore for allowing a fluid in a pipeline to act is accommodated between the seal lip parts. Any one of claims 1 to 6
The seismic isolation pipe mechanism described in (1). 8. A packing accommodating chamber is formed in an intermediate portion of the housing, and a fitting portion is formed on both sides of the packing accommodating chamber to be engaged with an engaging portion of a pipe to be connected. 7. The seismic isolation pipeline mechanism according to 7. 9. The seismic isolation pipe mechanism according to claim 8, wherein a lubricating member is provided at a locking portion of the pipe to be connected.