JP2010121329A - Construction method for taking fire-resisting measure for inside of long body supporting rack, and the long body supporting rack - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a construction method for taking fire-resisting measures for the inside of a long body supporting rack, which enables a sufficient amount of a gap filling material to be surely and efficiently arranged between a side plate portion of the long body supporting rack and a long body; and to provide the long body supporting rack. <P>SOLUTION: The gap filling material 2 for the fire-resisting measures is arranged in the state of limiting a long body K installable area of a bottom plate portion 5a, in an area adjacent to an inner surface of the side plate portion 4 in the longitudinal predetermined position of the long body supporting rack 1 equipped with the right and left side plate portions 4 and the bottom plate portion 5a. Subsequently, the long body K is installed on the bottom plate portion 5a of the long body supporting rack 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a long support rack for laying long bodies such as pipes and cables in a building, and more particularly to a technique for suppressing the propagation of fire and flame through the long support rack. It is.

  When a long support rack is inserted through a through hole formed in a wall of a building (an example of a compartment), an opening in the through hole is used to suppress the propagation of fire and flame to other rooms through the through hole. It is necessary to take fireproof measures between the section and the long body support rack and between the long body support rack and the long body.

  Conventionally, in order to provide a fireproof measure between the long body support rack and the long body, after installing the long body on the long body support rack, a soft putty material or thermal expansion for fireproof measures A construction method has been adopted in which a molded article (an example of a gap filling material) is disposed in a gap between a long body and a long body support rack (see, for example, Patent Documents 1 and 2 below).

JP 2007-291895 A JP-A-8-126164

  However, in the conventional construction method, as a result, the installation of the long body is prioritized over the fireproofing measures in the long body support rack, and the gap filling, which is a subsequent process of the long body installation process, is performed. A sufficient amount of gap filling material cannot be disposed between the side plate portion of the long body support rack and the long body during the material disposing process, which results in insufficient fire resistance. Alternatively, there is a problem that an inefficient process of disposing a gap filling material between the side plate portion of the long body support rack and the inner peripheral surface of the through hole is required.

  The present invention has been made in view of the above-described circumstances, and the main problem is that a sufficient amount of gap filling material is reliably and efficiently provided between the side plate portion and the long body of the long body support rack. In the point which provides the fireproof measure construction method and long body support rack in the long body support rack which can be arrange | positioned.

  A first characteristic configuration of the present invention relates to a fireproofing method in a long body support rack, and is adjacent to an inner surface of a side plate portion at a predetermined position in a longitudinal direction of a long body support rack having left and right side plate portions and a bottom plate portion. In the region, the gap filling material for fireproofing is disposed in a state in which the installable region of the long body in the bottom plate portion is limited, and then the long body is installed on the bottom plate portion of the long body support rack.

  According to the above configuration, prior to installing the long body on the bottom plate portion of the long body support rack, the gap filling material for fireproof measures is disposed in the region adjacent to the inner surface of the side plate portion of the long body support rack. Therefore, it is possible to secure the arrangement amount of the gap filling material for the fireproofing measures in a form that has priority over the installation amount of the long body, and thereby, the desired fireproof performance can be obtained reliably and efficiently. it can.

  According to a second characteristic configuration of the present invention, the gap having a height dimension larger than that of the side plate portion between the protruding piece portion or the top plate portion and the bottom plate portion connected to the upper portion of the side plate portion of the long body support rack. The gap filling material is disposed in a region adjacent to the inner surface of the side plate portion by pushing in the filling material.

  According to the above configuration, the gap filling material having a height dimension larger than that of the side plate portion is pushed between the protruding piece portion or the top plate portion and the bottom plate portion, and a gap is formed in an area adjacent to the inner surface of the side plate portion. Since the filling material can be disposed, for example, the gap filling is performed in comparison with the case where the gap filling material is held and operated in the region adjacent to the inner surface of the side plate portion or the dedicated fixing means for holding the gap filling material is used. The arrangement process of the material can be facilitated.

A third characteristic configuration of the present invention relates to a long body support rack, which includes left and right side plate portions and a bottom plate portion for long body installation,
A gap filling material is provided in a region adjacent to the inner surface of the side plate portion at a predetermined position in the longitudinal direction so as to limit the installable region of the long body in the bottom plate portion.

  According to the above configuration, when installing the long body on the bottom plate portion of the long body support rack, the gap filling material for fireproof measures exists in the region adjacent to the inner surface of the side plate portion of the long body support rack. Therefore, it is possible to secure the amount of gap filling material for fireproof measures in a form that takes precedence over the amount of installation of the long body, etc., thereby obtaining the desired fireproof performance reliably and efficiently. Is possible.

[First Embodiment]
FIG. 1 and FIG. 2 show a fireproof structure of a portion where a through hole H is formed in a wall W (an example of a partition), and a plurality of (in this example, 10) cables K (elongate bodies). A metal cable rack 1 (an example of a long-body support rack) for installing a through hole for receiving and supporting (an example) is inserted in a substantially central portion of a horizontally elongated through hole H, and the cable rack 1 A plurality of (in this example, five) block-shaped gap filling materials 2 are provided around the cable K in the interior of the.

  Further, the opening portion of the through hole H is provided with a gap filling material 2 in which a cover member 3 for a fire-proof measure that closes the annular gap between the cable rack 1 and the through hole H is arranged at the upper part of the cable K. It is provided in a state of being clamped with the cable K

  As shown in FIGS. 1 to 3, the cable rack 1 includes a pair of left and right side plate members 4 (an example of a side plate portion) and a pair of bottom plate members 5 a and 5 b (bottom plate portions) having different width dimensions. For example), and the top is open.

  An upper folded edge piece 4a (an example of a ceiling-side protruding piece portion) that protrudes inwardly is formed at the upper portion of the side plate member 4 and is bent inwardly at the lower portion of the side plate member 4. A lower folded edge piece 4b (an example of a bottom protruding piece) is formed by bending. The both side plate members 4 and the bottom plate member 5 are fixedly connected to each other by fixing both ends of the bottom plate members 5a and 5b to the lower bent piece 4b of the both side plate members 4 with fixing means (not shown) such as screws and screws. Has been.

  Although not shown, the block-shaped gap filling material 2 is formed in a substantially rectangular parallelepiped shape by enclosing a thermally expandable heat-resistant sealing material having thermal expandability and heat resistance in a bag made of a combustible material such as PE. ing. The longitudinal dimension of the gap filling material 2 is configured to be larger than the height dimension of the side plate member 4.

  As the heat-expandable heat-resistant sealing material, a material mainly composed of an inorganic filler, a heat-expandable material such as expanded graphite, and an unvulcanized rubber / polyolefin is employed. The heat-expandable heat-resistant sealing material has physical properties of an expansion start temperature of 120 ° C. and a thermal expansion coefficient of 4 times or more.

  The lid member 3 is composed of a plurality of (four in this example) plate materials (an example of a plate-like member) made of a non-combustible material such as calcium silicate, specifically, the same width as the width dimension of the cable rack 1. A pair of plate members 6 for closing the upper and lower sides of the horizontally long rectangular rack having a size and a height that is larger than the height from the upper side of the cable rack 1 to the upper side of the through hole H, and the side of the cable rack 1 A pair of plate materials for rack side closure in a vertically long rectangular shape having a width dimension larger than the width dimension from the side to the side edge of the through hole H and a height dimension larger than the height dimension of the through hole H 7.

Next, the fireproof measure construction method which comprises the fireproof measure structure shown in FIG. 1, FIG. 2 is demonstrated.
First, as shown in FIGS. 3 and 4, a predetermined position in the longitudinal direction of the cable rack 1 for installation of the through hole inserted in the through hole H in a state where the cable rack 1 ′ is connected and connected in the front and rear direction (in this example, The upper folded piece 4a and the lower folded piece of the side plate member 4 of the cable rack 1 are disposed in each of the regions adjacent to the inner surface of the side plate member 4 in a position where the opening of the through hole H is installed with respect to the through hole H). The gap filling material 2 is disposed in a state where the installation area of the cable K is limited by being pushed between the 4b and the bottom plate member 5.

  Next, as shown in FIG. 5, a desired number of cables K are installed in a region between the installed gap filling materials 2 in the bottom plate member 5b of the cable rack 1 (that is, a region where the cable K can be installed). .

  Thereafter, as shown in FIG. 6, a plurality (three in this example) of gap filling materials 2 are formed on the upper surface of the cable K installed on the bottom plate member 5 b of the cable rack 1 so as to close the upper space of the cable K. Arrangement (specifically, placement).

  Then, as shown in FIG. 7, each of the plate members 6, 7 constituting the lid member 3 is applied to the outer surface of the wall body W from the thickness direction of the wall body W and from the surface direction of the wall body W. In a state of being applied to the outer peripheral surface of the rack 1, the rack 18 is fixed to the wall body W by screws 18 (an example of fixing means). As a result, the opening of the through hole H is closed with the lid member 3 while the gap filling material 2 is clamped between the plate 6 and the cable K with a pressing force from the lower end surface of the upper plate 6. To do.

[Second Embodiment]
As shown in FIGS. 8 to 13, in the second embodiment, the cable rack 1 includes a pair of left and right side plate portions 8 made of sheet metal, and a bottom plate portion 9 made of sheet metal having substantially the same length as the side plate portion 8. It is comprised integrally from.

  In addition, the lid member 3 covers the cable rack 1 in a state where the cable rack 1 is sandwiched and restrained, and the cover member 3 extends between the outer peripheral surface of the restraint member 10 and the outer surface of the wall body W. It is comprised from the plate-shaped member which can obstruct | occlude the clearance gap between the through-hole H and the constraining member 10, specifically, the upper and lower paired board | plate material 11 which consists of a substantially non-flammable material.

  An upper folded edge piece 8a (an example of a protruding piece on the ceiling side) that protrudes inward at an angle of about 90 degrees is formed on the upper portion of the side plate portion 8 by bending.

  As shown in FIG. 10, the restraining member 10 includes a pair of split members 12 made of a sheet metal that can sandwich and restrain the cable rack 1. Each of the divided members 12 includes a base-portion-shaped base piece portion 13 capable of accommodating each of an upper half portion and a lower half portion at predetermined positions in the longitudinal direction of the cable rack 1, and both side walls of the base piece portion 13. The connecting piece 14 is formed to project outward from the end of the portion 13a at an angle of about 90 degrees.

  A second gap filling material 15 having the same specifications as the gap filling material 2 and having a thickness smaller than that of the gap filling material 2 is provided on the entire inner surface of the base piece portion 13 by a fixing means (not shown) such as a double-sided tape. ), And each of the connecting piece portions 14 is a posture holding portion that holds the plate 11 in a predetermined posture capable of closing the gap between the through hole H and the restraining member 10. 16 is provided.

  In order to configure the posture holding portion 16, a receiving support piece portion 16a capable of receiving and supporting the end surface of the plate member 11 is provided at the center position in the one projecting direction at the end side portion of the connecting piece portion 14 on the wall body W side. And a receiving member having a L-shaped cross-sectional view made of a contact piece 16b that contacts the back surface (the surface on the wall W side) of the plate 11 in a state where the plate 11 is received and supported by the receiving support piece 16a. A state in which the plate portion 11 is received and supported by the receiving support piece portion 16a on both sides of the receiving piece portion 16A at the end portion on the wall W side of the connecting piece portion 14 while the piece portion 16A is bent. The contact piece 16B that contacts the surface of the plate member 11 is bent.

  Further, a screw hole 14a (an example of a connecting part) for connecting the divided members 12 with screws 17 (an example of a connecting means) is formed through the connecting piece part 14.

Next, the fireproof measure construction method which comprises the fireproof measure structure shown in FIG. 8, FIG. 9 is demonstrated.
First, as shown in FIG. 11, a predetermined position in the longitudinal direction of the cable rack 1 for installation of a through hole inserted into the through hole H in a state where the cable rack 1 ′ is connected to the front and rear (in this example, the through hole Between each of the regions adjacent to the inner surface of the side plate portion 8 (in the outer position of the opening portion of the through hole H in the installed state with respect to H) between the upper bent piece 8a and the bottom plate portion 9 of the side plate portion 8 of the cable rack The gap filling material 2 is arranged in a state where the installation area of the cable K is limited by pushing.

  Next, although not shown, the cable K is placed in a desired area in the bottom plate portion 9 of the cable rack 1 between the installed gap filling materials 2 (that is, the area where the cable K can be installed), as in the first embodiment. A plurality (three in this example) of gap filling materials 2 are arranged on the upper surface of the installed cables K so as to close the upper space of the cables K.

  Thereafter, as shown in FIG. 12, the cable rack 1 is sandwiched from above and below by a pair of split members 12 constituting the lid member 3, and the split members 12 are connected with screws 17 in this state, thereby being shown in FIG. As described above, the restraining member 10 is attached to the cable rack 1, thereby partially closing the opening of the through hole H. At this time, the gap filling material 2 protruding from the upper side of the cable rack 1 is sandwiched in a compressed state between the upper divided member 12 and the cable K by the restraining force of the restraining member 10.

  And as shown in FIG. 13, the board | plate material 11 is inserted between each receiving piece part 16A and the contact piece part 16B of the division member 12 in the restraint member 10 attached to the cable rack 1, and the board | plate material 11 is made into the through-hole H. The opening of the through hole H is completely closed by fixing the plate member 11 to the outer surface of the wall body W with the screws 18 in a state in which the gap between the restraining member 10 is held in a predetermined posture that can be closed.

  In addition, since the other structure is the same as the structure demonstrated in 1st Embodiment, the same number is attached to the same structure location as 1st Embodiment, and the description is abbreviate | omitted.

[Third Embodiment]
As shown in FIGS. 14-17, in this 3rd Embodiment, the fixed top plate member 20a (top plate part) which obstruct | occludes between the upper parts of the side-plate part 8 is provided in the longitudinal direction rear half part of the said cable rack 1. As shown in FIG. ) And a detachable top plate member 20 b (an example of a top plate portion) that closes the upper portions of the side plate portions 8 is provided in the first half in the longitudinal direction of the cable rack 1. .

  In the third embodiment, instead of providing the lid member 3 at the opening of the through hole H, a soft putty material 19 is formed in the gap between the inner peripheral surface of the through hole H and the outer peripheral surface of the cable rack 1. Is filled.

Next, the fireproof measure construction method which comprises the fireproof measure structure shown in FIG. 14, FIG. 15 is demonstrated.
First, as shown in FIG. 16, a predetermined position in the longitudinal direction of the cable rack 1 for installation of a through hole inserted into the through hole H in a state where the cable rack 1 ′ is connected to the front and rear (in this example, the through hole H between the upper bent piece 8a and the bottom plate portion 9 of the side plate portion 8 of the cable rack 1 in each of the regions adjacent to the inner surface of the side plate portion 8 at the inner position of the opening of the through hole H in the installed state with respect to H. The gap filling material 2 is arranged in a state where the installation area of the cable K is limited by pushing.

  Next, although not shown, the cable K is placed in a desired area in the bottom plate portion 9 of the cable rack 1 between the installed gap filling materials 2 (that is, the area where the cable K can be installed), as in the first embodiment. A plurality of (three in this example) gap filling materials 2 are arranged on the upper surface of the installed cable K so as to close the upper space of the cable K.

  After that, as shown in FIG. 17, the detachable top plate member 20b is attached to the cable rack 1 while pressing the gap filling material 2 on the upper side from above, and the inner peripheral surface of the through hole H and the cable rack in that state. 1 is filled with a soft putty material 19 to close the gap between the inner peripheral surface of the through hole H and the outer peripheral surface of the cable rack 1.

  In addition, since the other structure is the same as the structure demonstrated in 2nd Embodiment, the same number is attached to the same structure location as 2nd Embodiment, and the description is abbreviate | omitted.

[Other Embodiments]
(1) In each of the embodiments described above, after inserting the cable rack 1 for installing the through hole into the through hole H, the gap filling material 2 is adjacent to the inner surface of the side plate portion at a predetermined position in the longitudinal direction of the cable rack 1. However, before the cable rack 1 is inserted into the through hole H, the gap filling material 2 is disposed in each of the regions adjacent to the inner surface of the side plate portion 8 in the cable rack 1. Alternatively, the gap filling material 2 may be provided in advance in each of the regions adjacent to the inner surface of the side plate portion 8 in the cable rack 1 (that is, at the manufacturing stage) by a fixing means such as a double-sided tape.

(2) In each of the above-described embodiments, the case where the gap filling materials 2 and 15 are made of a heat-resistant thermal expansion sealing material and a bag is shown as an example. Or it may be comprised from the heat-resistant sealing material which does not contain a thermally expansible material, a stone material, a putty material, etc.

(3) The specific configuration such as the shape and size of the gap filling materials 2 and 15 is not limited to the block shape shown in the above-described embodiment, and various configuration changes are possible.

(4) In each of the above-described embodiments, the gap filling material 2 having a height dimension larger than that of the side plate portion is pushed between the projecting piece portion or the top plate portion and the bottom plate portion connected to the upper portion of the side plate portion of the cable rack 1. Thus, the case where the gap filling material 2 is installed in the area adjacent to the inner surface of the side plate portion has been shown as an example. For example, the gap filling material 2 having a smaller height than the side plate portion of the cable rack 1 is attached to the side plate portion. The gap filling material 2 may be disposed in a region adjacent to the inner surface of the side plate portion by being placed in a region adjacent to the inner surface, or fixed by a fixing means such as a double-sided tape, or simply It may be just arranged.

(5) In each above-mentioned embodiment, the case where the elongate body support rack 1 which applies a fireproof measure inside a rack was the elongate body support rack 1 inserted in the through-hole H in a division body was shown as an example. However, the long body support rack 1 ′ installed outside the through hole H may be used.

(6) In each of the above-described embodiments, the wall body W is shown as an example of the partition body, but a floor slab or the like may be used.

(7) The plate member constituting the lid member 3 is not limited to a pure plate material, and may be a member configured in a plate shape with fibers or the like.

(8) In each of the above-described embodiments, the cable rack 1 for cables is shown as an example of the long body support rack. However, a rack or the like that supports piping may be used.

(9) In the second embodiment described above, the configuration in which the restraining member 10 and the gap filling material 2 are arranged outside the opening of the through hole H (specifically, outside the plate material 11) is shown as an example. The whole or a part of the restraining member 10 (for example, the base piece portion 13 including the gap filling material 15) and the gap filling material 2 are arranged inside the opening of the through hole H (specifically, inside the plate material 11). The structure etc. which are made may be sufficient.

Front view showing a fireproof structure in the first embodiment II-II sectional view of FIG. Explanatory drawing of the fireproofing method in the first embodiment Explanatory drawing of the fireproofing method in the first embodiment Explanatory drawing of the fireproofing method in the first embodiment Explanatory drawing of the fireproofing method in the first embodiment Explanatory drawing of the fireproofing method in the first embodiment Front view showing the fireproof structure in the second embodiment IX-IX sectional view of FIG. Explanatory drawing of the cover member in 2nd Embodiment Explanatory drawing of the fireproofing method in the second embodiment Explanatory drawing of the fireproofing method in the second embodiment Explanatory drawing of the fireproofing method in the second embodiment Front view showing the fireproof structure in the third embodiment XV-XV sectional view of FIG. Explanatory drawing which shows the fire-resistant construction method in 3rd Embodiment Explanatory drawing of the fireproofing method in the third embodiment

Explanation of symbols

K elongate body 1 elongate body support rack 2 gap filling material 4, 8 side plate portions 4a, 8a protruding piece portions 5a, 5b, 9 bottom plate portions 20a, 20b top plate portion

Claims (3)

  For fireproof measures in a state where the area where the long body can be installed in the bottom plate portion is limited to a region adjacent to the inner surface of the side plate portion at a predetermined position in the longitudinal direction of the long body support rack provided with the left and right side plate portions and the bottom plate portion. After arranging the gap filling material, a fireproof measure construction method in the long body support rack in which the long body is installed on the bottom plate portion of the long body support rack.   By pushing the gap filling material having a height dimension larger than that of the side plate portion between the projecting piece portion or the top plate portion and the bottom plate portion connected to the upper portion of the side plate portion of the long body support rack, the side plate The fire-resistant construction method in a long body support rack according to claim 1, wherein the gap filling material is disposed in a region adjacent to the inner surface of the portion. While equipped with left and right side plates and a bottom plate for long body installation,
A long body support rack in which a gap filling material is provided in a region adjacent to the inner surface of the side plate portion at a predetermined position in the longitudinal direction so as to limit the installable region of the long body in the bottom plate portion.

Images