JP4880553B2 - Lateral support mechanism for steel pipes in buildings - Google Patents

Description

  The present invention relates to a mechanism for laterally supporting a soot pipe such as a cooling water soot pipe for district cooling and heating in a building.

  In order to reduce the propagation of vibrations of equipment such as pumps connected to the soot pipe when it is supported laterally to prevent buckling, the soot pipe such as the cooling water soot pipe of the district cooling and heating (DHC) Further, a vibration isolating material such as rubber is brought into contact with the outer peripheral surface and is supported in the lateral direction.

  At that time, in order to ensure high vibration isolation performance, it is necessary to select a soft vibration isolation material, that is, a vibration isolation material having a small spring constant.

  On the other hand, the horizontal support of the pipes suppresses the relative displacement of the pipes against the shaking of the building due to wind and the shaking of the building during an earthquake, so if a vibration isolator that is too soft is used, There is a risk that the pipe will be greatly deformed and destroyed, or the vertical pipe will collide with the building and be destroyed, and therefore the vibration isolator cannot be softened unnecessarily.

  Therefore, conventionally, a method of giving up a high vibration propagation reduction effect and laterally supporting the soot tube using a vibration damping material that is hard to some extent, or a soft rubber at the tip of a hard rubber as illustrated in FIGS. A method of laterally supporting the soot tube using a vibration isolating material integrally formed by connecting the two in series. The latter method is intended to satisfy both the effect of reducing vibrations caused by soft rubber, that is, rubber having a small spring constant, and the seismic performance against large deformation caused by hard rubber, that is, rubber having a large spring constant. It is.

  Here, the outline of the configuration of FIGS. 4 and 5 will be described. First, in FIG. 4, the symbol a indicates a vibration isolating material, and the vibration isolating material a has a hard rubber c attached to a mounting plate b. A soft rubber d is bonded to a hard rubber c. A hollow portion e is provided in the soft rubber d portion.

  In FIG. 5, reference numeral f is a vertical tube, g is a frame, and h is a frame member held on the frame g via an adjustment arm i. The four anti-vibration materials “a” arranged in the above are attached. Reference symbol j is an adjustment bolt.

Further, as a conventional technique corresponding to the former method, there is one disclosed in, for example, Patent Document 1, and the lateral support mechanism of Patent Document 1 transmits vibrations transmitted from the rod to the support frame to the fixed ship formwork. In order to prevent this, a plurality of lateral vibration isolation mechanisms are provided, and each lateral vibration isolation mechanism is disposed in front of the fixing ship form frame and spaced apart in the longitudinal direction of the rear plate, with the upper side facing upward. A connecting piece composed of a vertically long rectangular flat steel plate fixed in a protruding state, and projecting inwardly from this connecting piece, a pair of lower supporting pieces, and attached to the inner surfaces of these supporting pieces, The anti-vibration rubber is composed of a pair of anti-vibration rubbers that sandwich the connecting plate of the support frame. It is not assumed that both hard and soft anti-vibration rubbers are used.
JP 2003-294170 A

  Among the above-mentioned conventional techniques, the method of supporting the soot pipe in the lateral direction using a hard vibration-proof material does not provide a high vibration propagation reduction effect, and vibration from equipment such as a pump connected to the soot pipe is building. As a result, vibration and abnormal noise caused by the vibration are generated in the building, resulting in a decrease in living performance.

In addition, in the method of laterally supporting the hoist pipe using a vibration isolator composed of hard rubber and soft rubber connected in series, when the building deforms greatly during an earthquake, when the hoist pipe is supported by the hard rubber, Since a force exceeding the allowable load is applied to the soft rubber and the soft rubber is destroyed, it is necessary to replace the vibration isolator after such a situation occurs.
The present invention aims to solve such problems.

  In order to solve the above-described problems, in the present invention, in a support mechanism for supporting a steel pipe in a lateral direction with rubber, the rubber includes a rubber having a small spring constant for vibration isolation and a spring for preventing large deformation. A rubber having a large constant is configured separately, and the rubber having a small spring constant is supported by contacting the outer peripheral surface of the soot tube, and the rubber having a large spring constant is supported with a gap from the outer peripheral surface of the soot tube. We propose a lateral support mechanism for steel pipes in buildings.

  In the present invention, it is proposed that the rubber having a small spring constant and the rubber having a large spring constant are supported on the same floor of the building in the above configuration.

  The present invention also proposes that the rubber having a small spring constant and the rubber having a large spring constant are supported on different floors of the building in the above configuration.

  Furthermore, in the present invention, in the above-described configuration, it is proposed that a rubber having a small spring constant and a rubber having a large spring constant are supported on the same floor of the building and the other part is supported on different floors. .

  According to the present invention, normally, the soot tube is laterally supported by rubber having a small spring constant that is in contact with the outer peripheral surface thereof, so that buckling due to a load is prevented. On the other hand, since rubber having a large spring constant does not contact the soot pipe, vibration of equipment such as a pump connected to the soot pipe is prevented from propagating to the building.

  If the steel pipe is displaced laterally relative to the building during an earthquake, the rubber with a large spring constant comes into contact with the outer peripheral surface of the steel pipe, so the horizontal displacement of the steel pipe is suppressed by the rubber with a large spring constant. And large deformation is prevented.

  In this way, when a rubber with a large spring constant comes into contact with the outer peripheral surface of the soot tube at the time of an earthquake, a larger load is applied to a rubber with a small spring constant than usual. Since the rubber with a large spring constant is configured separately, when the rubber with a large spring constant is in contact with the outer peripheral surface of the steel pipe and supporting it in the lateral direction, the load applied to the rubber with a small spring constant is It is easy to arrange so as to be sufficiently smaller than the allowable load.

  Therefore, even if rubber with a large spring constant supports the pipe in the event of an earthquake, a load exceeding the allowable load will not be applied to the rubber with a small spring constant, so it will not break and must be replaced as before. Disappears.

  Rubber with a large spring constant and rubber with a small spring constant can be supported on the same floor of the building to support the ducts, or can be supported on different floors of the building to support the ducts, By combining these, one part can be supported on the same floor of the building and the other part can be supported on different floors.

Next, the best mode for carrying out the present invention will be described with reference to the accompanying drawings.
First, FIG. 1 is a schematic longitudinal sectional view showing a first embodiment of a horizontal support mechanism for a vertical pipe in a building to which the present invention is applied.
Reference numeral 1 denotes a soot pipe such as a DHC pipe, reference numeral 2 denotes a soot support member formed on each floor of the building, and subscripts a, b, c,... N denote each floor of the building. A rubber support member 3 is provided on each of the soot tube support members 2 so that the rubber 4 protrudes from these rubber support members 3 toward the outer peripheral surface of the soot tube 1.

  Here, the tub tube support member 2 and the rubber support member 3 can be applied with an appropriate configuration in addition to the configurations similar to the frame g and the frame member h in the support mechanism of FIG. 5 described above, for example.

  The rubber 4 described above is composed of a rubber 4a having a small spring constant and a rubber 4b having a large spring constant. The rubber 4a having a small spring constant is in contact with the outer peripheral surface of the soot tube 1. The rubber 4b is protruded and supported by the rubber support member 3, and the rubber 4b having a large spring constant is protruded and supported by the rubber support member 3 so that the gap 5 is placed from the outer peripheral surface of the soot tube 1. That is, in FIG. 1, in the pipe support members 2 a and 2 n corresponding to the a floor and the n floor of the building, the rubber support member 3 makes the tip of the rubber 4 a having a small spring constant contact the outer peripheral surface of the pipe 1. In the pipe support members 2b and 2c corresponding to the b floor and c floor of the building, the rubber support member 3 causes the tip of the rubber 4b having a large spring constant to leave a gap 5 from the outer peripheral surface of the pipe 1. I support it.

  As described above, in the first embodiment, the rubber 4a having a small spring constant and the rubber 4b having a large spring constant are supported on different floors a, b, c,. The rubber 4a having a small spring constant prevents vibration and buckling at normal times, and the rubber 4b having a large spring constant prevents large deformation during an earthquake.

  In this case, the number of floors supported by the rubber 4a having a small spring constant and the rubber 4b having a large spring constant can be appropriately set. For example, these are supported alternately on each floor, or any one of the rubbers 4a, 4b is supported. The number of floors supported can be increased. For example, by arranging a plurality of floors, for example, the fifth floor, supported by the rubber 4b having a large spring constant between the upper and lower floors supported by the rubber 4a having a small spring constant, the spring constant corresponding to the prevention of large deformation can be obtained. The number of floors supporting the large rubber 4b can be increased.

  Next, FIG. 2 is a schematic longitudinal sectional view showing a second embodiment of the lateral support mechanism for the horizontal pipe in the building to which the present invention is applied. In this second embodiment, rubber having a small spring constant is shown. 4a and rubber 4b having a large spring constant are supported adjacent to each other on the same floor of the building.

  On the other hand, FIG. 3 is a schematic cross-sectional view showing a third embodiment of a horizontal support mechanism for a horizontal pipe in a building to which the present invention is applied. In this third embodiment, rubber having a small spring constant is shown. 4a and rubber 4b having a large spring constant are supported on the same floor of the building as in the second embodiment. In this case, rubber 4a having a small spring constant and rubber 4b having a large spring constant are It supports so that it may support in the position shifted in the horizontal direction along the outer peripheral surface of 1.

  Although not shown, in the present invention, as another embodiment, the rubber 4a having a small spring constant and the rubber 4b having a large spring constant are partially supported on the same floor of the building, The department can be supported on different floors.

Specific examples of the rubber according to the present invention are as follows.
Rubber with small spring constant: Spring constant = 20kgf / mm
Rubber with a large spring constant: Spring constant = 1768kgf / mm Clearance: 5mm

  In addition to the specific examples of rubber described above, the spring constants of the rubber 4a having a small spring constant and the rubber 4b having a large spring constant can be appropriately set in consideration of the vibration-proof function and the large deformation preventing function.

  Since the present invention is as described above, the present invention is most suitable as a mechanism for laterally supporting various types of pipes such as cooling water pipes for district heating and cooling in high-rise buildings and other buildings.

It is a typical longitudinal section showing a 1st embodiment of the present invention. It is a typical longitudinal section showing a 2nd embodiment of the present invention. It is a typical cross-sectional view which shows the 3rd Embodiment of this invention. It is a perspective view which shows an example of the conventional vibration isolator (vibration isolation rubber). It is a perspective view which shows the prior art example of the horizontal direction support mechanism using the vibration isolator of FIG.

Explanation of symbols

1 Steel pipes 2a, 2b, 2c,... 2n Steel pipe support member 3 Rubber support member 4 Rubber 4a Rubber with small spring constant 4b Rubber with large spring constant 5 Gap

Claims (4)

In the supporting mechanism for supporting the steel pipe to the building in the lateral direction with rubber, the rubber is composed of rubber having a small spring constant for vibration isolation and rubber having a large spring constant for preventing large deformation. The rubber having a small constant is supported by being in contact with the outer peripheral surface of the steel pipe, and the rubber having the large spring constant is supported with a gap from the outer peripheral surface of the steel pipe. mechanism. The lateral support mechanism for a vertical pipe in a building according to claim 1, wherein the rubber having a small spring constant and the rubber having a large spring constant are supported on the same floor of the building. The horizontal support mechanism for a vertical pipe in a building according to claim 1, wherein the rubber having a small spring constant and the rubber having a large spring constant are supported on different floors of the building. The rubber in a building according to claim 1, wherein a part of the rubber having a small spring constant and a rubber having a large spring constant are supported on the same floor of the building and the other part is supported on different floors. Lateral support mechanism for the tube.

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