JP2006299513A - Foundation structure for road auxiliary equipment, and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ease a traffic jam by minimizing a traffic regulation associated with construction work, and to shorten a construction period, and to shorten a traffic jam period by shortening a construction period. <P>SOLUTION: This foundation structure supports road auxiliary equipment 2, 4, 5 and 6 which are installed on the road surface of a tunnel 1 formed on an invert 11 or ground 15; a rock bolt 3 is implanted by penetrating the downside of the invert 11 or the ground 15 and fixing the downside to the invert 11 or the ground 15; and road auxiliary equipments 2, 4, 5 and 6 are fixed to the invert 11 or the ground 15 via the rock bolt 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a road auxiliary equipment foundation structure for supporting road auxiliary equipment installed on a road surface in a tunnel, and a method of manufacturing the same.

  In the tunnel for automobiles, road incidental facilities are installed on the road surface so that safe and comfortable driving can be performed. Examples of road ancillary equipment include a median retaining wall, a handrail, a guard fence, and a road sign post.

  In general, when a road incidental facility is installed on a road surface, a concrete foundation is constructed on the road surface, and the road incidental facility is coupled and fixed to the concrete foundation with anchor bolts and nuts.

  The concrete foundation is a process of excavating the road surface to form a hole for foundation construction, assembling a mold in this hole, then placing the concrete into the mold, curing the concrete for a certain period, and solidifying it. It is common to build through.

  By the way, in the past, when installing road ancillary equipment on the road surface, it is necessary to construct a concrete foundation on the road surface, and the construction of the concrete foundation requires not only a large work space and a great deal of labor and labor, but also concrete. There was a problem that the construction period had to be long because it was cured and solidified. Therefore, when a concrete foundation is built in an existing tunnel, in order to secure the space necessary for the work, traffic regulations such as traffic closure, one-sided traffic, lane restrictions, etc. must be implemented for vehicles traveling in the tunnel. If a traffic jam occurs due to this traffic regulation and the construction period becomes long, the traffic jam will occur for a long time.

  The present invention has been made to solve the above-mentioned problem, and while reducing traffic congestion by minimizing traffic regulations associated with construction, it is possible to significantly reduce the period of traffic congestion by shortening the construction period. It aims at providing the foundation structure for facilities, and its manufacturing method.

  In order to achieve the above object, a foundation structure for a road incidental facility according to the present invention is a foundation structure for supporting a road incidental facility installed on a road surface of a tunnel formed on the invert or the ground. The lower side is penetrated and fixed, and a lock bolt is planted, and the road incidental equipment is fixed to the invert or the ground through the lock bolt.

  In addition, the method for manufacturing a foundation structure for a road incidental facility according to the present invention is a method for manufacturing a foundation structure for supporting a road incidental facility installed on a road surface of a tunnel formed on an invert or ground, and After planting so that the lower side penetrates and adheres to the ground and the lock bolt protrudes from the road surface, the road auxiliary equipment is inverted or grounded via the lock bolt by connecting the road auxiliary equipment to the protruding portion of the lock bolt. It is characterized by being fixed to.

  According to the above-mentioned foundation structure for road incidental facilities and the manufacturing method thereof, the road incidental facilities are supported by the invert or ground of the tunnel because the road incidental facilities are fixed to the invert or ground of the tunnel via the rock bolts. It will be. Since the invert or ground of the tunnel is strong enough to support the road auxiliary equipment, the conventional concrete foundation can be omitted by supporting the road auxiliary equipment to the invert or ground of the tunnel. it can. Since the concrete foundation can be omitted, the work space associated with the construction of the concrete foundation can be reduced, labor and labor can be reduced, and the work period can be shortened.

  According to the present invention, the conventional concrete foundation can be omitted, the work space associated with the installation of road ancillary equipment can be reduced, labor and labor can be reduced, and the construction period can be shortened. Even when installing road incidental facilities, the work space can be narrowed to minimize traffic restrictions associated with construction and alleviate traffic congestion, and the construction period can be shortened. is there.

  Next, the road auxiliary facility foundation structure according to the present invention will be specifically described with reference to the drawings. FIG.1 and FIG.2 is sectional drawing which shows embodiment of the foundation structure for road incidental facilities which concerns on this invention.

  1 and 2, reference numeral 1 denotes a tunnel, which is composed of an invert 11 curved downward and an arch-shaped tunnel body 12 constructed so as to bridge both sides of the invert 11. A roadbed 13 is laid on the invert 11, and a paved road surface 14 such as concrete pavement or asphalt pavement is laid on the roadbed 13.

  Reference numeral 2 denotes a retaining wall for a median strip (hereinafter simply referred to as a retaining wall) as a road ancillary facility installed in the center of the roadway of the tunnel 1 and is made of a concrete molded body. As shown in FIG. It is comprised from the part 21 and the flange part 22 protrudingly provided by the lower part both sides of this wall part 21. As shown in FIG. The wall portion 21 is formed in a rectangular shape, and the flange portion 22 is formed in an inclined surface that inclines as its upper surface goes to the lower end. A plurality of recesses 23 (three in the embodiment) for fastening operation are formed in the flange portion 22, and an insertion hole 24 penetrating vertically is formed on the bottom surface of the recess 23.

  Reference numeral 3 denotes a lock bolt for fixing the retaining wall 2 to the invert 11 of the tunnel 1. The lock bolt 3 is composed of a tubular all screw bolt having a thread portion on the entire outer peripheral surface thereof, and a drilling bid 31 is attached to the tip portion. The drilling bit 31 sets the rock bolt 3 on a rock drill (not shown), and the rock bolt 3 is given a striking force and a rotational force by the rock drill so that the paved road surface 14 of the tunnel 1 The roadbed 13 and the invert 11 or the ground are drilled.

  The lock bolt 3 has a lower end portion penetrating and fixed to the invert 11 of the tunnel 1 and an upper end portion protruding upward from the paved road surface 14. The insertion hole 24 of the retaining wall 2 is fitted into the protruding portion of the lock bolt 3, and the tightening nut 32 is screwed into the upper end portion of the lock bolt 3 inserted through the insertion hole 24 in the recess 23 of the retaining wall 2 and tightened. The retaining wall 2 is screwed to the lock bolt 3 to fix the retaining wall 2 to the invert 11 of the tunnel 1 via the lock bolt 3.

  Next, the following procedure is used to manufacture the above-mentioned foundation structure for road incidental facilities. First, the rock bolt 3 is implanted in the invert 11 of the tunnel 1. That is, by setting the rock bolt 3 on the rock drill and applying a striking force and a rotational force to the rock bolt 3 with the rock drill, the tunnel 31 is tunneled by the drilling bit 31 attached to the tip of the lock bolt 3. 1 paved road surface 14, roadbed 13 and invert 11 are sequentially drilled. At this time, the diameter of the drilling bit 31 is set larger than the diameter of the lock bolt 3, and a gap is formed between the inner wall of the hole formed by the drilling bit 32 and the lock bolt 3. . When the invert 11 is drilled to a predetermined depth by the drilling bit 31 of the lock bolt 3, the rock drill is removed from the lock bolt 3, and the injection hose extending from the dedicated injection pump for dry mortar (fixing material) is locked to the lock bolt. After connecting to the upper end of 3, a required amount of dry mortar is injected from this injection hose. The injected dry mortar is sent to the drilling bit 31 through the hollow interior of the lock bolt 3, flows out from the outflow hole provided in the drilling bit 31, and is formed by the drilling bit 31. The gap between the inner wall of the hole and the lock bolt 3 is filled. Thereafter, the dry mortar is cured and solidified for a predetermined period, and the lower end of the lock bolt 3 is firmly fixed to the invert 11 of the tunnel 1 with the dry mortar, so that the lock bolt 3 is implanted in the invert 11 of the tunnel 1. It becomes a state. Note that the upper end of the lock bolt 3 protrudes upward from the paved road surface 14 by several centimeters.

  Next, in a state where the lock bolt 3 is planted in the invert 11 of the tunnel 1, the retaining wall 2 is placed on the paved road surface 14 so that the protruding portion of the lock bolt 3 passes through the insertion hole 24. When the tightening nut 32 is screwed into the upper end portion of the lock bolt 3 inserted through the insertion hole 24 and tightened, the retaining wall 2 is screwed to the lock bolt 3, so that the retaining wall 2 is interposed via the lock bolt 3. Can be fixed to the convert 11 of the tunnel 1 to constitute a road auxiliary facility foundation structure.

  Since the retaining wall 2 is fixed to the invert 11 of the tunnel 1 through the lock bolt 3 according to the road auxiliary facility basic structure of the present embodiment, the retaining wall 2 is supported by the invert 11 of the tunnel 1. It will be. Since the invert 11 of the tunnel 1 has sufficient strength to support the retaining wall 2, the conventional concrete foundation can be omitted by supporting the retaining wall 2 on the invert 11 of the tunnel 1. it can. Since the concrete foundation can be omitted, the work space associated with the installation of the retaining wall 2 can be reduced, labor and labor can be reduced, and the work period can be shortened. Therefore, even if the retaining wall 2 is installed in the existing tunnel 1, the work space can be reduced, so traffic restrictions associated with construction can be minimized, traffic congestion can be reduced, and the construction period can be shortened. This has the effect of significantly shortening the period of traffic congestion.

  In the above embodiment, the case where the road incidental facility (retaining wall 2) is installed in the tunnel 1 in which the bottom plate is reinforced by the invert 11 is described. However, the bottom plate is reinforced by the invert by being constructed on a solid ground. An embodiment in the case where a road incidental facility is installed in a tunnel that is not necessary will be described with reference to FIG. In the embodiment shown in FIG. 3, the same or corresponding parts as those in the embodiment shown in FIG. 1 and FIG.

  In the embodiment shown in FIG. 3, the tunnel 1 is constructed by constructing an arch-shaped tunnel main body 12 on a solid ground 15. A roadbed 13 is laid on the ground 15, and a paved road surface 14 is laid on the roadbed 13. The lower end portion of the lock bolt 3 is penetrated and fixed to the ground 15 of the tunnel 1, and the insertion hole 24 of the retaining wall 2 is fitted into a protruding portion protruding upward from the paved road surface 14 of the lock bolt 3. The retaining wall 2 is fixed to the ground 15 of the tunnel 1 via the lock bolt 3 by screwing and tightening a tightening nut 32 to the upper end portion of the lock bolt 3 inserted through the insertion hole 24.

  According to the embodiment shown in FIG. 3, since the retaining wall 2 is fixed to the ground 15 of the tunnel 1 via the lock bolt 3, the retaining wall 2 will be supported by the ground 15 of the tunnel 1, Since the ground 15 of the tunnel 1 has sufficient strength to support the retaining wall 2, a conventional concrete foundation can be omitted, and the same effect as the embodiment shown in FIGS. 1 and 2 can be omitted. Is obtained.

  In the above embodiment, although the retaining wall 2 is mentioned as a road incidental facility, it will not be specifically limited if it is the facility attached to a road other than the retaining wall 2. FIG. For example, FIG. 4 and FIG. 5 show an embodiment in the case where the road incidental equipment is a balustrade, and the same or corresponding parts as those in the embodiments shown in FIG. 1 to FIG. Is omitted.

  4 and 5, reference numeral 4 denotes a handrail as a road incidental facility installed on the road side of the tunnel 1, and a plurality of columns 41 erected on the paved road surface 14 at predetermined intervals along the roadway. And a horizontal beam 42 laid horizontally in several steps between adjacent columns 41. The support column 41 has a pedestal portion 43 at the lower end, and an insertion hole 44 penetrating vertically is formed in the pedestal portion 43. The support column 41 is inserted into the insertion hole 44 of the pedestal portion 43 through a protruding portion that protrudes upward from the paved road surface 14 of the lock bolt 3 whose lower end portion penetrates and is fixed to the invert 11 of the tunnel 1. By tightening the fastening nut 32 by screwing it into the upper end of the lock bolt 3 through which 44 is inserted, the pedestal 43 is screwed to the lock bolt 3 and fixed to the invert 11 of the tunnel 1 via the lock bolt 3. ing.

  According to the embodiment shown in FIGS. 4 and 5, the column 41 of the balustrade 4 is fixed to the invert 11 of the tunnel 1 via the lock bolt 3, so that the column 41 of the balustrade 4 is fixed to the invert 11 of the tunnel 1. Since the invert 11 of the tunnel 1 has sufficient strength to support the column 41 of the rail 4, a conventional concrete foundation can be omitted, and FIG. 1 to FIG. The same effects as those of the embodiments shown in FIG.

  6 and 7 show an embodiment in the case where a road incidental facility installs a road sign. The same or corresponding parts as those in the embodiment shown in FIGS. 1 to 5 are denoted by the same reference numerals. The description is omitted.

  6 and 7, reference numeral 5 denotes a road sign post as a road auxiliary facility installed on the road side of the tunnel 1, and a pole 51 erected on the paved road surface 14 and a side from the upper part of the pole 51. The arm 52 includes two arms 52 projecting in the direction, and a sign plate 53 attached to the two arms 52. The pole 51 has a base plate 54 fixed to the lower end, and an insertion hole 55 penetrating vertically is formed in the base plate 54. The pole 51 is inserted into the insertion hole 55 of the base plate 54 through a protruding portion that protrudes upward from the paved road surface 14 of the lock bolt 3 whose lower end is inserted and fixed to the invert 11 of the tunnel 1. The base plate 54 is screwed onto the lock bolt 3 and fixed to the invert 11 of the tunnel 1 via the lock bolt 3 by screwing and tightening the tightening nut 32 onto the upper end portion of the inserted lock bolt 3.

  According to the embodiment shown in FIGS. 6 and 7, the pole 51 of the road sign pillar 5 is fixed to the invert 11 of the tunnel 1 via the lock bolt 3. Since the invert 11 of the tunnel 1 has sufficient strength to support the pole 51 of the road sign pillar 5, the conventional concrete foundation may be omitted. The same effects as those of the embodiments shown in FIGS. 1 to 5 can be obtained.

  FIGS. 8 and 9 show an embodiment in which the road incidental equipment is a protective fence, and the same or corresponding parts as those in the embodiments shown in FIGS. Description is omitted.

  8 and 9, reference numeral 6 denotes a protective fence as a road incidental facility installed on the road side of the tunnel 1, and a plurality of support columns erected on the paved road surface 14 at predetermined intervals along the roadway. 61, an upper horizontal beam 62 and a lower horizontal beam 63 that are installed between the upper end and the lower part of the adjacent column 61, and a plurality of vertical frames that are installed at a predetermined interval between the upper horizontal beam 62 and the lower horizontal beam 63. And a crosspiece 64. The support column 61 has a base plate 65 fixed to the lower end thereof, and an insertion hole 66 that penetrates the base plate 65 vertically. The support 61 is inserted into the insertion hole 66 of the base plate 65 through a protruding portion that protrudes upward from the paved road surface 14 of the lock bolt 3 whose lower end is inserted and fixed to the invert 11 of the tunnel 1, and is inserted through the insertion hole 66 of the base plate 65. The base plate 65 is screwed onto the lock bolt 3 and fixed to the invert 11 of the tunnel 1 via the lock bolt 3 by screwing and tightening the tightening nut 32 to the upper end portion of the lock bolt 3.

  According to the embodiment shown in FIGS. 8 and 9, the support 61 of the guard fence 6 is fixed to the invert 11 of the tunnel 1 via the lock bolt 3. 11, the invert 11 of the tunnel 1 has sufficient strength to support the support 61 of the protective fence 6, so that a conventional concrete foundation can be omitted. The same effects as those of the embodiments shown in FIGS. 1 to 7 can be obtained.

It is sectional drawing which shows embodiment of the foundation structure for road incidental facilities which concerns on this invention. It is drawing which shows a road incidental facility (retaining wall for a median strip), (a) is a perspective view, (b) is a principal part longitudinal cross-sectional view. It is sectional drawing which shows other embodiment of the foundation structure for road incidental facilities which concerns on this invention. It is sectional drawing which shows other embodiment of the foundation structure for road incidental facilities which concerns on this invention. It is a perspective view of a road incidental facility (railway). It is sectional drawing which shows other embodiment of the foundation structure for road incidental facilities which concerns on this invention. It is a perspective view of a road incidental facility (road sign pillar). It is sectional drawing which shows other embodiment of the foundation structure for road incidental facilities which concerns on this invention. It is a front view of a road incidental facility (guard fence).

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Tunnel, 11 ... Invert, 12 ... Tunnel main body, 13 ... Road base, 14 ... Pavement road surface, 15 ... Ground, 2 ... Retaining wall for median strips, 22 ... Flange part, 24 ... Insertion hole, 3 ... Rock bolt, 31 ... Bit for drilling, 32 ... Clamping nut, 4 ... Hand rail, 41 ... Post, 43 ... Base part, 44 ... Insertion hole, 5 ... Road sign post, 51 ... Pole, 54 ... Base plate, 55 ... Insertion hole, 6 ... Guard fence, 61 ... Post, 65 ... Base plate, 66 ... Insertion hole

Claims (2)

A foundation structure supporting road incidental equipment installed on the road surface of a tunnel formed on invert or ground,
A base structure for road incidental equipment, wherein a lower side is penetrated and fixed to invert or the ground, a lock bolt is planted, and the road auxiliary equipment is fixed to the invert or the ground via the lock bolt. A method of manufacturing a foundation structure that supports road incidental equipment installed on the road surface of a tunnel formed on invert or ground,
Inverted or fixed to the ground with the bottom side penetrating and fixed so that the lock bolt protrudes from the road surface, then the road auxiliary equipment is inverted via the lock bolt by connecting the road auxiliary equipment to the protruding portion of the lock bolt. Or the manufacturing method of the foundation structure for road incidental facilities characterized by making it fix to a ground.

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