JP2002188758A - Displacement absorption piping structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a displacement absorption piping structure preventing the reduction of durability of a flexible tube by avoiding a phenomenon that a deformation accompanied with a jack up is concentrated on one of flexible tubes after a building is jacked up without lengthening the length of both flexible tubes communicated and connected to both sides of a connecting tube. SOLUTION: The displacement absorption piping structure is provided with a ground side piping 7 disposed at a base ground 3 side so as to feed a fluid; and a building side piping 8 disposed at a building 1 side installed on the base ground 3. In the structure, the building side piping 8 and the ground side piping 7 are communicated and connected each other by flexible tubes 10, 11 communicated and connected to both sides of the connecting pipe 9 in a state that the connecting pipe 9 is interposed at an intermediate part and the connecting pipe 9 is installed on a support base 21 provided on a support part 21A at the base ground 3 side or the building 1 side. The support base 21 is provided with a position change fixing mechanism 32 for fixing the connecting pipe 9 such that the position thereof is vertically changed relative to the support part 21A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a ground-side pipe provided on a foundation ground side for supplying a fluid, and a building-side pipe provided on a building side provided on the base ground. The building-side pipe and the ground-side pipe are connected to each other by a flexible pipe connected to both sides of the connection pipe with the connection pipe interposed therebetween, and the connection pipe is connected to the foundation ground side or The present invention relates to a displacement absorbing piping structure installed on a support provided at a support section on the building side.

[0002]

2. Description of the Related Art In such a plumbing structure, for example, in a landfill where uneven settlement is expected, even after correcting the inclination of a building installed on the foundation ground, city gas, which is an example of a fluid, remains on the building side. Is used to supply
Conventionally, a support base for installing an elbow pipe, which is an example of a connection pipe, is fixed in a state in which the posture cannot be changed with respect to a support portion on the foundation ground side or the building side, and therefore, the elbow pipe installed on the support base However, the position cannot be changed with respect to the support portion on the foundation ground side or the building side.

[0003]

Therefore, in the conventional piping structure, for example, if the support base on which the elbow pipe is installed is fixed to the foundation ground side, as shown in FIG. At the beginning of the installation of the building 1, the elbow pipe 9 and the flexible pipes 10 and 11 connected to both sides of the elbow pipe 9 are disposed so as to be substantially horizontal.
As shown in FIG. 5, uneven settlement occurs on the right side of the foundation ground 3, and the building 1 tilts to the right. The right column base 2 is lifted by a hydraulic jack (not shown), and the spacer 6 is inserted. As shown in Fig. 7, when the right side of the building 1 is lifted to cope with the differential settlement, only the building-side flexible tube 11 of the two flexible tubes 10 and 11 is bent upward, so that the deformation accompanying the jack-up is possible on the building side. Since the elbow tube is concentrated on the flexible tube 11, the elbow tube is removed from the support base, a spacer having an appropriate thickness is inserted between the support base and the elbow tube, and the elbow tube is attached to the support base again. Conversely, when uneven settlement occurs on the left side of the foundation ground 3, the deformation concentrates only on the ground-side flexible tube 10, and the same applies to the case where the support for installing the elbow pipe is fixed to the building side. In any case, in the conventional piping structure, the deformation accompanying the jack-up may concentrate on only one of the flexible tubes 10 and 11, and the durability of the flexible tube on the deformation concentrated side may be reduced. In order to avoid the above, there is a disadvantage that a troublesome additional work is required.

[0004] As a method of eliminating such a defect, for example, it is conceivable to lengthen both flexible tubes 10 and 11. However, since the flexible tubes are relatively expensive, both flexible tubes 1 and 11 are expensive.
Increasing the lengths of 0 and 11 leads to an increase in cost, and also requires a large space for accommodating both flexible tubes 10 and 11.

The present invention focuses on such a conventional problem, and an object of the present invention is to make the length of both flexible tubes connected to both sides of the connection tube unnecessarily long, and After jacking up a building, displacement absorption that can prevent the deformation accompanying the jacking-up from being concentrated on only one of the flexible tubes by a simple operation and prevent a decrease in the durability of the flexible tube. To provide a piping structure.

[0006]

Means for Solving the Problems [Structure] As shown in FIGS. 1, 3 and 4, the characteristic structure of the invention according to claim 1 is disposed on the foundation ground 3 side to supply a fluid. And a building-side pipe 8 disposed on the side of the building 1 installed on the foundation ground 3, and the building-side pipe 8 and the ground-side pipe 7 are connected with the connecting pipe 9 in the middle. With intervening,
Flexible tubes 10 and 11 communicatively connected to both sides of the connection tube 9
And the connecting pipe 9 is a displacement absorption pipe structure installed on a support 21 provided on a support 21A on the foundation ground 3 side or the building 1 side, wherein the support 21 is A position change fixing mechanism 32 for changing the position of the connection pipe 9 in the vertical direction with respect to the support portion 21A and fixing the connection pipe 9 is provided.

The feature of the second aspect of the present invention is as shown in FIGS. 1, 3 and 4, and
However, there is provided a posture changing mechanism 37 for changing the installation posture of the connection pipe 9 with respect to the support base 21 in accordance with the vertical position change of the connection pipe 9 with respect to the support portion 21A.

According to a third feature of the present invention, as shown in FIGS. 1, 3 and 4, the attitude changing mechanism 37 is adapted to change the position of the building 1 in the vertical direction with respect to the foundation ground 3. Following this, the installation posture of the connection pipe 9 with respect to the support base 21 is to be changed.

Note that, as described above, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

According to the first aspect of the present invention, the support base provided on the support portion on the foundation ground side or on the building side for installing the connection pipe, connects the connection pipe to the support section. Because it has a position change fixing mechanism that changes the position in the vertical direction and fixes it, uneven settlement occurs on the foundation ground and the building tilts, and when the tilted building is lifted up by jacking up etc., The connecting pipe can be vertically changed and fixed to the supporting portion on the foundation ground side or the building side by the position change fixing mechanism of the support base.

That is, in the case where the support base on which the connecting pipe is installed is provided on the supporting portion on the foundation ground side, the position of the connecting pipe is changed upward by the position change fixing mechanism when the tilted building is lifted and responded. The flexible pipe on the ground side is bent upward by this position change fixing of the connecting pipe, but the amount of bending of the flexible pipe on the building side is reduced by that amount, and eventually the building is bent. The deformation associated with the lifting is dispersed between the building-side flexible tube and the ground-side flexible tube, and it is avoided that the deformation is concentrated only on one of the flexible tubes. Conversely, when the support base for installing the connecting pipe is provided on the support part on the building side, when the inclined building is lifted and responded, the connecting pipe is repositioned downward by the position change fixing mechanism and fixed. In that case, in this case, the amount of bending of the ground-side flexible tube is reduced, and the deformation accompanying the lifting of the building is distributed to the building-side flexible tube and the ground-side flexible tube.

In this way, even when the support base is installed on the foundation ground side or on the building side, the length of the flexible tube on the building side or ground side is made longer than necessary. With the simple operation using the position change fixing mechanism, it is possible to prevent the deformation accompanying the lifting of the building from being distributed to both flexible tubes and to concentrate on only one of the flexible tubes. Is prevented as much as possible, and the durability of the entire piping structure can be improved.

According to the characteristic configuration of the second aspect of the present invention, the support base changes the installation posture of the connection pipe with respect to the support base following the vertical position change of the connection pipe with respect to the support part. Since the support mechanism is installed on the foundation ground side to change the position of the connecting pipe upwards, and because the support base is installed on the building side and changes the position of the connecting pipe downwards, it has a support mechanism. Following the change in the position of the table, the installation posture of the connecting pipe is changed, and unnecessary tensile and compressive forces acting on both flexible pipes, as well as torsion, are reduced, and the durability of both flexible pipes is reduced. Is more effectively avoided.

According to the characteristic configuration of the third aspect of the present invention, the posture changing mechanism changes the installation posture of the connection pipe with respect to the support base following the vertical position change with respect to the foundation ground of the building. Even when the inclined building is lifted up by jacking up or the like, the installation posture of the connection pipe is changed, and unnecessary pulling force or twist acting on both flexible pipes is reduced.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a displacement absorbing pipe structure according to the present invention will be described with reference to the drawings. This piping structure is used, for example, in a landfill where uneven settlement is expected to supply city gas, which is an example of a fluid, to a building installed on the foundation ground.
As shown in FIG. 2 and FIG. 2, the building 1 is installed on a foundation ground 3 via a plurality of pillars 2, and a plurality of through holes 2 b drilled in a foundation 2 a of each pillar 2 When the building 1 is tilted due to the uneven settlement of the foundation ground 3 when the bolt 4 buried and fixed to the ground 3 side is inserted, the column base 2 at a necessary place is lifted by the hydraulic jack 5 and the base base of the column base 2 is lifted. By inserting a spacer 6 between the base 2a and the foundation ground 3, it is configured to cope with uneven settlement.

A pipe for supplying city gas to such a building 1 includes a polyethylene pipe 7 as a ground side pipe buried in the foundation ground 3 and a building side pipe provided on the building 1 side. A metal pipe 8, and the polyethylene pipe 7 and the metal pipe 8 are made of stainless steel and connected to both sides of the elbow pipe 9 made of metal as an example of a connection pipe. Are connected to each other by two flexible tubes 10 and 11 having That is, a metal straight pipe 13 is connected to the polyethylene pipe 7 via the elbow-shaped connecting tool 12 and extends to above the foundation ground 3.
The ground-side flexible pipe 10 is connected to an upper end of the straight pipe 13 via an elbow-shaped connecting member 14. As shown in FIG. 4, the ground-side flexible tube 10 is connected to one side of the elbow tube 9, and the building-side flexible tube 11 is connected to the other side of the elbow tube 9. The building-side flexible tube 11 is connected to the metal tube 8.

In this way, with the polyethylene pipe 7 and the metal pipe 8 interposed therebetween, the two flexible pipes 10 connected to both sides of the elbow pipe 9 with the elbow pipe 9 interposed therebetween.
11 are connected to each other. The end of the ground side flexible tube 10 on the side of the connecting member 14 is connected to a saddle type bracket 17.
Is fixed to an auxiliary support 18 installed on the foundation ground 3 side, and the end of the flexible tube 11 on the metal tube 8 side is fixed to a bracket 20 connected to the building 1 side by a saddle type bracket 19. The elbow pipe 9 located between the flexible pipes 10 and 11 is supported by a metal support 21 installed on a support portion 21A on the foundation ground 3 side.

As shown in detail in FIG. 3, the support base 21 includes a lower plate 22 mounted and fixed on a support portion 21A on the foundation ground 3 side, and an upper plate 23 located above the lower plate 22. The lower plate 22 is provided with lower end portions of a pair of left and right links 24,
The two links 2 are rotatably pivoted about the horizontal axis P1.
An upper roller 25 that rotates while being in contact with the lower surface of the upper plate 23 is attached to the upper end of the upper plate 4, and the two links 24 are connected to each other by a reinforcing plate 26. An upper end of a pair of left and right links 27 is pivotally attached to the upper plate 23 so as to be relatively rotatable around a horizontal axis P2, and a lower roller which rotates by contacting the lower end with the upper surface of the lower plate 22. 28, the two links 27 are connected to each other by a reinforcing plate 29, and the left and right links 24, 27 provided one by one on the left and right are rotatable relative to each other about the horizontal axis P3. It is pivotally connected.

A screw bar 30 having a male screw is attached to the upper plate 23 of the support base 21 so as to be rotatable only in a relative rotation, and a nut member 31 screwed to the screw bar 30 is connected to the upper roller 25.
Is connected to the link 24 having the
The nut member 31 is moved along the screw rod 30 by rotating the operation handle 30a connected to the upper and lower sides in the forward and reverse directions, and the upper plate 23 is configured to be vertically movable and fixed freely. . In this way, the upper plate 23 of the support 21
As shown in (b) of FIG. 3, the lower plate 22 and the support portion 21A on the foundation ground 3 side within the range of the stroke L between the lowermost position and the uppermost position. On the other hand, the stroke L
In any position inside, the upper plate 23 of the support base 21 is fixed by the links 24 and 27, the screw bar 30, the nut member 31, and the like. The position change fixing mechanism 32 is configured to change and fix the position in the vertical direction with respect to the support portion 21A.

A pedestal 33 is fixed on the upper surface of the upper plate 23, and a slide plate 34 is disposed on the pedestal 33. An elbow tube is provided for two mounting seats 34a provided on the upper surface of the slide plate 34. The straight pipe portions at both ends constituting the pipe 9 are fixed by a pair of saddle type fittings 35, and the elbow pipe 9 is installed on the slide plate 34 of the support base 21. A guide rail 36 is provided between the base 33 and the slide plate 34.
a and a pair of guide means 36 comprising a guide member 36b
The slide plate 34 is configured to be slidable obliquely with respect to the upper plate 23 of the support base 21 having the pedestal 33.

That is, as shown in FIG. 3A, the elbow pipe 9 has the axial centers X and X of the two straight pipe portions located at both ends.
Y are configured to be orthogonal to each other, and their axes X, Y
Are arranged along the sides of the square slide plate 34, and the slide plate 34 passes through the intersection of the two axes X and Y and intersects the axes X and Y at an angle of 45 degrees. It is configured to slide along Z. As will be described in detail later, when the elbow tube 9 moves up and down in accordance with the change in the position of the upper plate 23 in the up and down direction, the slide plate 34 and the guide means 36 change the position of the elbow tube 9 in the up and down direction. In addition, a posture changing mechanism 3 for automatically changing the installation posture of the elbow tube 9 with respect to the upper plate 23 of the support base 21.
The support base 21 is provided with this attitude changing mechanism 37 in addition to the position changing and fixing mechanism 32 described above.

Next, the use and operation of this piping structure will be described. When the building 1 is initially installed, as shown in FIG. 5A, the elbow pipe 9 and the flexible pipes 10 and 11 are used.
Are arranged so that they are substantially horizontal,
The upper plate 23 is set so as to be located substantially at the center of the stroke L of the upper plate 23. However, this setting state is extremely standard, and, for example, one of the two flexible tubes 10 and 11 is disposed so as to be inclined in a side view in response to the expected uneven settlement. Various settings are conceivable in actual implementation, such as setting the upper plate 23 of the support base 21 at the lowest position of the stroke L. Then, as shown in (b) of FIG. 5, if uneven settlement occurs on the right side of the foundation ground 3 and the building 1 tilts to the right, the hydraulic column 5 lifts the right column base 2 and the spacer 6 As shown in FIG. 5 (C), the right side of the building 1 is lifted to cope with uneven settlement, and the building-side flexible tube of the flexible tubes 10 and 11 is left as it is. Only the tube 11 is curved upward,
The deformation accompanying the jack-up is concentrated only on the building-side flexible tube 11.

Then, the operating plate 30a is rotated to raise and fix the upper plate 23 by almost half the height of the jack-up. Then, as shown in FIG. 6, the deformation accompanying the jack-up is caused by both flexible tubes 10 and 11.
, And is prevented from concentrating on only one of the flexible tubes. When a tensile force acts on both flexible tubes 10 and 11 as the position of the building 1 is changed by lifting the hydraulic jack 5 and the upper plate 23 is lifted, the reaction force is generated as shown in FIG. As shown in the figure, the slide plate 34 automatically slides along the oblique axis Z by the action of the posture changing mechanism 37 composed of the slide plate 34 and the guide means 36, and the elbow tube 9 with respect to the upper plate 23 of the support base 21. Is changed, and both flexible tubes 10,
The effect of unnecessary pulling forces on 11 is avoided.

As shown in FIG. 8A, when uneven settlement occurs on the right side of the foundation ground 3 and the building 1 is tilted to the right, the hydraulic column 5 lifts the left column pedestal 2 in advance. The inserted spacer 6 may be removed, and the left side of the building 1 may be jacked down as shown in FIG. In this case, the operation handle 30a is rotated to move the upper plate 2 by almost half the jack-down height.
3 is lowered and fixed, so that FIG.
As shown in (c), the deformation associated with jack down is
The installation position of the elbow tube 9 is changed by the slide plate 34 automatically sliding along with the lowering of the building 1 and the upper plate 23, and the installation posture of the elbow tube 9 is changed. The effect of unnecessary pulling forces on the tubes 10, 11 is avoided.

[Another Embodiment] (1) In the above embodiment, the support portion 21A on the foundation ground 3 side is used.
Although the example in which the support base 21 is installed is shown in the figure, on the contrary, the support part 21A is provided on the building 1 side, and
It is also possible to install and support the support 21. However, when the support 21 is installed on the building 1 side, the moving direction of the upper plate 23 to be moved when the building 1 is jacked up or jacked down is opposite to the case where the support 21 is installed on the foundation ground 3 side. . For example, in the example shown in FIG. 5, in a state where the building 1 is inclined rightward as shown in (b),
When the right side of the building 1 is lifted by inserting the spacer 6 as shown in (c), the supporting base 21 is also lifted upward with the lifting of the building 1, and of the two flexible tubes 10 and 11, Only the ground-side flexible tube 10 is curved upward. Therefore, contrary to the previous embodiment in which the support base 21 is installed on the foundation ground 3 side, the upper plate 23 is lowered and fixed, whereby the deformation accompanying the jack-up is distributed to the flexible tubes 10 and 11. Will be.

(2) In the above embodiments, the support 2
1 is provided with a position change fixing mechanism 32 for changing the position of the upper plate 23 in the vertical direction and fixing the upper plate 23 in two modes: jack-up shown in FIGS. 5 and 6 and jack-down shown in FIG. Although a possible example has been shown, it is also possible to adopt a configuration in which only the jack-up shown in FIGS. 5 and 6 can be handled. In that case, as shown in the previous embodiment,
If the support base 21 is installed on the foundation ground 3 side, as the position change fixing mechanism 32, a structure that can change the position of the upper plate 23 of the support base 21 only upward and fix it,
If the support 21 is installed on the building 1 side as in the other embodiment described in the above (1), the position change fixing mechanism 32 changes the position of the upper plate 23 of the support 21 only downward. Then, one that can be fixed is used.

(3) In the above embodiments, the support 2
1 shows an example in which a posture changing mechanism 37 for automatically changing the installation posture of the elbow tube 9 is provided.
Is not indispensable, and the posture change mechanism 3
7 can be eliminated. When the posture changing mechanism 37 is provided, the posture changing mechanism 37 does not need to be attached to the flexible tubes 10 and 11 when the support base 21 is moved upward and fixed, or when the position is moved downward and fixed. It is not necessarily limited to the slide type shown in the previous embodiment because it is for avoiding the application of a strong force, and the elbow tube 9 is turned to change the posture, or to slide and turn. In some cases, the posture of the elbow tube 9 may be changed by combining the above. In actual implementation, the position of the elbow tube 9 is appropriately selected and implemented in accordance with the situation at the time of installation and the expected situation of uneven settlement.

(4) In the above embodiments, the pipe structure for supplying the city gas to the building 1 installed on the foundation ground 3 has been described as an example. The present invention is not limited thereto, and is also applicable to, for example, a case where various gases and liquids are supplied to a building in a chemical factory or a chemical factory.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view showing a displacement absorbing piping structure.

FIG. 2 is a perspective view showing a response to uneven settlement.

FIG. 3 shows an elbow tube and a support base, (a) is a plan view,
(B) Front view

FIG. 4 is a perspective view showing an elbow tube and a support base.

FIG. 5 is an explanatory view showing a response to uneven settlement.

FIG. 6 is an explanatory view showing a response to uneven settlement.

FIG. 7 is a perspective view showing an elbow tube and a support base.

FIG. 8 is an explanatory diagram showing a response to uneven settlement.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Building 3 Foundation ground 7 Ground side piping 8 Building side piping 9 Connecting pipe 10 Ground side flexible pipe 11 Building side flexible pipe 21 Support base 21A Support part 32 Position change fixing mechanism 37 Attitude change mechanism

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hisao Onishi 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi, Osaka Inside Osaka Gas Co., Ltd. (72) Inventor Shigeru Ibaraki 4-chome, Hirano-cho, Chuo-ku, Osaka-shi, Osaka No. 1-2 Inside Osaka Gas Co., Ltd. (72) Minoru Fujiyoshi Minoru 2nd Daifuku Kuwana-shi, Mie Hitachi Metals Co., Ltd. Kuwana Plant (72) Minoru Ibayashi 2nd Daifuku Kuwana-shi Mie Hitachi Metals Co., Ltd. Inside the Kuwana Plant (72) Inventor Toshiya Kawashima 3-5-29 Kitahama, Chuo-ku, Osaka City, Osaka Prefecture F-term (reference) 2D060 AA05 AB03 AC01 AC05 3H023 AA05 AB04 AC64

Claims (3)

[Claims] 1. A ground-side pipe provided on a foundation ground side for supplying a fluid, and a building-side pipe provided on a building side installed on the base ground, wherein the building-side pipe and the ground are provided. The side pipes are connected to each other by flexible pipes connected to both sides of the connection pipe in a state where the connection pipe is interposed therebetween, and the connection pipe is connected to a support on the foundation ground side or the building side. A displacement absorption piping structure installed on a provided support base, wherein the support base includes a position change fixing mechanism for changing a position of the connection pipe in a vertical direction with respect to the support part and fixing the connection pipe. Displacement absorbing piping structure. 2. The apparatus according to claim 1, wherein the support base has a posture changing mechanism for changing an installation posture of the connection pipe with respect to the support base following a vertical position change of the connection pipe with respect to a support part. 2. The displacement absorbing piping structure according to 1. 3. The displacement absorbing pipe according to claim 2, wherein the attitude changing mechanism changes an installation attitude of the connection pipe with respect to the support base following a vertical position change of the building with respect to a foundation ground. Construction.