JP2006299512A - Foundation for tunnel partition wall, and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce labor and man-power, shorten a construction period, and avoid a traffic jam caused by construction work, in foundation work for a tunnel partition wall. <P>SOLUTION: A foundation block made of a metal or concrete, and a rock bolt, which has one end capable of being fixed to the invert of a tunnel or the inside of firm bedrock in a penetrating manner, are used. One end of the rock bolt is fixed to the invert of the tunnel or the inside of the firm bedrock in a penetrating manner; the other end of the rock bolt is protruded onto the ground by a predetermined length; and the foundation block is connected to the other end of the rock bolt. This makes the foundation block fixed to the invert of the tunnel or the firm bedrock via the rock bolt. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tunnel partition wall foundation and a method for manufacturing the same.

  Generally, a tunnel on a motorway is provided with a sidewalk through which pedestrians pass along one or both sides of the tunnel, and the exhaust gas of the vehicle is located at the boundary between the side of the sidewalk and the side of the roadway through which the vehicle passes. A partition wall may be installed to protect the environment of the sidewalk side space. This partition wall is installed on the concrete foundation manufactured in the boundary part of the sidewalk side and the roadway side.

  The above concrete foundation is formed by excavating the boundary between the sidewalk and the roadway along the roadway to form a groove for manufacturing the foundation, and after assembling the formwork in this groove, the concrete is poured into the formwork and fixed. It is common to manufacture after a period of curing and solidifying concrete.

  By the way, since the concrete foundation is formed by placing concrete on site, it is necessary to excavate the groove for manufacturing the foundation, assemble and dismantle the formwork, and drive and cure the concrete. Requires labor, labor, time and work space. Moreover, when manufacturing the concrete foundation in an existing tunnel, traffic regulations such as traffic closure, one-sided traffic, and traffic lane regulation must be implemented for vehicles traveling on the roadway in order to secure the space required for work. Rather, traffic congestion due to this traffic regulation occurs.

  It is an object of the present invention to reduce labor and labor and shorten the work period by eliminating concrete molding in foundation work for tunnel partition walls.

  In order to achieve the above object, a foundation for a tunnel partition wall according to the present invention includes a metal or concrete foundation block in which a pillar of a tunnel partition wall is attached and fixed to the upper surface, and one end portion in the invert of the tunnel. A lock bolt that is fixedly inserted and protrudes a predetermined length on the boundary portion, and the foundation block is connected to the other end of the lock bolt and the foundation block is tunneled through the lock bolt. Inverting has been fixed.

  Also, the method for manufacturing a tunnel partition wall foundation according to the present invention includes a metal or concrete foundation block in which a support for a tunnel partition wall is fixedly attached to an upper surface, and one end portion penetrating and fixing in the invert of the tunnel. The lock bolt is inserted into and fixed to the invert of the tunnel, and the other end of the lock bolt is projected on the boundary part by a predetermined length. The foundation block is coupled to the end, and the foundation block is fixed to the invert of the tunnel via a lock bolt.

  Further, the foundation for the tunnel partition wall according to the present invention is applied on the concrete laid on the solid base via the embankment, and is attached and fixed to the upper surface of the pillar of the tunnel partition wall. A base block made of metal or concrete, and a lock bolt whose one end penetrates and is fixed in the base and whose other end protrudes a predetermined length on the ground. The foundation block is fixed to the base via a lock bolt connected to the end.

  Furthermore, a method for manufacturing a tunnel partition wall foundation according to the present invention is a method for manufacturing a tunnel partition wall foundation on concrete laid on a solid base via embankment, the tunnel partition wall on the upper surface. Using a metal or concrete foundation block that is fixed and supporting the column of the column, and a lock bolt whose one end can penetrate and be fixed in the base, and one end of the lock bolt penetrates and is fixed in the base, The other end of the lock bolt protrudes a predetermined length above the ground, and then the base block is coupled to the other end of the lock bolt, and the block is fixed to the base via the lock bolt.

  According to the tunnel partition wall foundation of the present invention, by using a metal or concrete foundation block, there is no need to cast concrete and excavation of a foundation manufacturing groove for molding concrete, formwork Assembling / disassembling of concrete and placing / curing of concrete can be omitted, so that labor and labor can be reduced and the construction period can be shortened. As a result, even when manufacturing in an existing tunnel, the work space is small and the construction period can be shortened, so that large traffic regulation is not required and traffic congestion is less likely to occur.

  FIG. 1 shows a partial longitudinal sectional view of a tunnel provided with a foundation for a tunnel partition wall according to an embodiment of the present invention. This tunnel A is composed of an invert B curved downward and constructed by field construction, and this invert B. It is composed of an arch-shaped tunnel body C constructed so as to bridge both sides of the road, and a fill D is applied on the invert B, and the upper surface of the fill D is paved with concrete E to create a sidewalk F and a roadway G. Is provided.

  The foundation for a tunnel partition wall according to this embodiment includes a foundation block 11 manufactured in another place such as a factory, and a lock bolt 14 that fixes the foundation block 11 to the invert B of the tunnel A.

  The base block 11 is made of a concrete molded body, and is formed in a rectangular shape having a longitudinal cross-sectional shape of a rectangle. In this basic block 11, an anchor bolt 12 for mounting and fixing the pillar I of the tunnel partition wall H is projected on the upper surface, and an insert anchor 13 for mounting and fixing to the anchor base 16 is embedded on the lower surface. The anchor bolts 12 and the insert anchors 13 are embedded at predetermined positions in the longitudinal direction when the foundation block 11 is formed, and are fixed to the upper and lower surfaces of the foundation block 11 together with the solidification of the concrete of the foundation block 11.

  The lock bolt 14 is made up of all screw bolts made of hollow steel having a screw part on the entire outer peripheral surface thereof, and a drilling bit 15 is attached to the tip part. The rock bolt 14 is penetrated by the sidewalk side concrete E and the embankment D, and the lower end part to which the drilling bit is attached is penetrated and fixed to the invert B of the tunnel A, and the upper end part protrudes above the sidewalk side concrete.

  The anchor base 16 is made of a steel plate as a material and has a box shape in longitudinal section, and is formed long in the horizontal direction. The anchor base 16 is connected to an insert anchor 13 having an upper surface plate embedded in the lower surface of the foundation block 11 by a bolt 17 and a nut 18 at an upper end portion of a lock bolt 14 whose upper surface plate protrudes above the sidewalk side concrete E. Are combined.

  In order to manufacture such a tunnel partition wall foundation, the following procedure is performed. First, the lock bolt 14 is fixed to the invert B of the tunnel A. That is, the rock bolt 14 having a drilling bit attached to the tip is set in a rock drill, and the drilling bit 15 attached to the tip is drilled while applying a striking force and a rotational force by the rock drill. The sidewalk concrete E, embankment D, and invert B are drilled sequentially by the action. At this time, the diameter of the drill bit 15 is set larger than the diameter of the lock bolt 14, and a gap is formed between the inner wall of the drill hole formed by the drill bit 15 and the lock bolt 14. The When the invert B was drilled to a predetermined depth by the drilling bit, the rock drill was removed from the lock bolt 14 and an injection hose extending from a dedicated injection pump for dry mortar (fixing material) was connected to the upper end of the lock bolt 14. Then, a required amount of dry mortar is injected from this injection hose. The injected dry mortar is sent to the drilling bit through the hollow inside of the lock bolt 14 and flows out from the outflow hole provided in the drilling bit to the outside of the drilling hole formed by the drilling bit. The gap between the inner wall and the lock bolt 14 is filled. Thereafter, the dry mortar is cured and solidified for a predetermined period, and the lower end portion of the lock bolt 14 is firmly fixed to the invert B of the tunnel A through the dry mortar. At this time, the upper end portion of the lock bolt 14 protrudes about several centimeters above the sidewalk side concrete E.

  When the lock bolt 14 is fixed to the invert B of the tunnel A in this way, the anchor base 16 is placed on the sidewalk concrete E, and then the anchor base 16 is coupled to the upper end of the lock bolt 14 by the nut 18. As a result, the anchor base 16 is supported on the sidewalk side concrete E. Next, after placing the foundation block 11 on the anchor base 16, the anchor base 16 is coupled to the insert anchor 13 embedded in the lower surface of the foundation block 11 with a bolt 17, so that the foundation block 11 is placed on the anchor base 16. It is possible to manufacture a foundation for a partition wall between tunnels.

  After the tunnel partition wall foundation is manufactured in this way, the pillars I of the tunnel partition wall H are attached and fixed using the anchor bolts 12 protruding from the upper surface of the foundation block 11, and the tunnel partition wall becomes the foundation block 11. Will be installed on top.

  According to the tunnel partition wall foundation manufactured as described above, the foundation block 11 made of a concrete molded body is used, and the foundation block 11 is fixed to the invert B of the tunnel A via the lock bolts 14. This eliminates the need to dig and form the foundation manufacturing groove for concrete molding, assembling and dismantling the formwork, and placing and curing the concrete, thus reducing labor and labor and shortening the construction period. be able to. Therefore, even when manufacturing in an existing tunnel, the work space is small and the construction period can be shortened. Therefore, no major traffic regulation is required and traffic congestion is less likely to occur.

  FIG. 2 shows another embodiment of a foundation for a tunnel partition wall, which uses a foundation block 19 having an L-shaped longitudinal section, and penetrates vertically below a lower horizontal portion 19 a of the foundation block 19. The lock block 14 has a bolt insertion hole 20 into which the upper end of the lock bolt 14 is inserted, and a nut 21 is screwed into the upper end of the lock bolt 14 and tightened. A lower horizontal portion 19 a of 19 is coupled to the lock bolt 14, and the base block 19 is fixed to the invert B of the tunnel A via the lock bolt 14.

  According to the tunnel partition wall foundation of the embodiment shown in FIG. 2, by using the foundation block 19 whose longitudinal section is L-shaped, the lower horizontal portion of the foundation block 19 with respect to the moment at the time of vehicle collision It can be countered by 19a, and the high intensity | strength of the foundation block 19 can be ensured.

  In the above embodiment, the case where the bottom plate is applied to the tunnel A reinforced with the inverter B is described. However, the case where the bottom plate is applied to the tunnel which is constructed on a strong base and does not need to be reinforced with the invert is described below. explain. That is, as shown in FIG. 3, when a tunnel partition wall foundation is applied on concrete E laid on a solid foundation J via embankment D, it is made of a concrete molded body manufactured in another place in advance. Using the foundation block 22 and a lock bolt 23 that can be fixedly penetrated into the base J having a strong end, the one end of the lock bolt 23 is fixedly penetrated into the strong base J and the other end of the lock bolt 22 is fixed. And the foundation block 22 is coupled to the other end of the lock bolt 23 via the anchor base 24 so that the foundation block 22 becomes a solid foundation J via the lock bolt 23. Fixed.

  Moreover, in the said embodiment, although the foundation for tunnel partition walls is given using the foundation block made from concrete, you may give the foundation for tunnel partition walls using a metal foundation block. FIG. 4 shows an embodiment of a foundation for a tunnel partition wall, which is provided on a concrete E which is reinforced by a reinforcing bar K and has a certain degree of strength, using a metal foundation block 25. It is formed into a panel shape without a back plate made of steel or the like.

  The foundation for a tunnel partition wall according to this embodiment has one end portion of the lock bolt 26 inserted and fixed to the invert B of the tunnel A, and the other end portion of the lock bolt 26 protrudes on the concrete E by a predetermined length. The anchor bolt 27 is embedded in the concrete E with its upper end projecting a predetermined length, and a base plate 25a of a metal base block 25 is attached to the nut 28 and the other end of the lock bolt 26 and the upper end of the auxiliary anchor bolt 27. By joining with 29, the metal base block 25 can be supported on the concrete E and manufactured. Thereafter, the column I of the partition wall H is attached and fixed to the upper surface plate 25 b of the metal base block 25 with the bolts 30 and the nuts 31.

  According to the tunnel partition wall foundation of the embodiment shown in FIG. 4, the metal foundation block 25 is fixed to the invert B of the tunnel A via the lock bolt 26, and the reinforcing bar K via the auxiliary anchor bolt 27. By fixing to the reinforced concrete E having a certain degree of strength, it is possible to prevent the metal foundation block 25 from sliding to the sidewalk side at the time of vehicle collision, and against the moment at the time of vehicle collision. The lock bolt 26 can be opposed to the sidewalk side end of the base plate 25a of the metal foundation block 25, and high strength of the metal foundation block 25 can be ensured.

  FIG. 5 shows a modification of the embodiment of the tunnel partition wall foundation shown in FIG. 4, in which the base plate 25a of the metal foundation block 25 is extended to the sidewalk side, and the moment at the time of collision of the vehicle The compressive force transmitted from the base plate 25a of the metal foundation block 25 to the concrete E can be dispersed, and the distance between the side edge of the base plate 25a of the metal foundation block 25 and the rock bolt 27 is increased. This is preferable because it can increase the strength against the moment at the time of vehicle collision.

It is a partial longitudinal cross-sectional view of the tunnel which gave the foundation for tunnel partition walls of embodiment of this invention. It is a partial longitudinal cross-sectional view of the tunnel which gave the foundation for tunnel partition walls of other embodiment of this invention. It is a longitudinal cross-sectional view which shows embodiment of the foundation for tunnel partition walls of this invention given to the tunnel which is not reinforced with the bottom board by invert. It is a longitudinal cross-sectional view which shows embodiment of the foundation for tunnel partition walls of this invention using a metal foundation block. It is a longitudinal cross-sectional view which shows the modification of embodiment of the foundation for tunnel partition walls shown in FIG.

Explanation of symbols

  A ... Tunnel, B ... Invert, D ... Fill, E ... Concrete, H ... Tunnel partition wall, I ... Column, J ... Strong foundation, K ... Reinforcement, 11 ... Foundation block (made of concrete), 12 ... Anchor bolt, DESCRIPTION OF SYMBOLS 13 ... Insert anchor, 14 ... Lock bolt, 15 ... Bit for drilling, 16 ... Anchor base, 17 ... Bolt, 18 ... Nut, 19 ... Foundation block (made of concrete), 19a ... Lower horizontal part, 20 ... Bolt insertion hole 22 ... Foundation block (concrete), 23 ... Rock bolt, 24 ... Anchor base, 25 ... Foundation block (made of metal), 25a ... Base plate, 26 ... Lock bolt, 27 ... Auxiliary anchor bolt, 28, 29 ... Nut, 30 ... Bolt, 31 ... Nut

Claims (4)

  In order to provide a partition wall for partitioning the sidewalk space and the roadway space in the tunnel having the invert, it is a foundation applied to the boundary between the concrete sidewalk and the roadway laid on the invert via a bank etc. A base block made of metal or concrete that is fixedly attached to the upper surface of the partition wall of the tunnel on the upper surface, and one end portion is penetrated and fixed into the invert of the tunnel, and the other end portion projects a predetermined length above the boundary portion A foundation for a tunnel partition wall, wherein the foundation block is coupled to the other end of the lock bolt, and the foundation block is fixed to the invert of the tunnel via the lock bolt. .   In order to provide a partition wall that partitions the sidewalk space and the roadway space in the tunnel with the invert, a foundation for the tunnel partition wall is manufactured at the boundary between the concrete sidewalk and the roadway that is laid on the invert via a fill. Using a metal or concrete foundation block on which the pillar of the tunnel partition wall is attached and fixed to the upper surface, and a lock bolt whose one end can penetrate and be fixed inside the invert of the tunnel, One end of the bolt is inserted and fixed in the invert of the tunnel, the other end of the lock bolt protrudes a predetermined length on the boundary, and then the base block is coupled to the other end of the lock bolt. The foundation of the partition wall for the tunnel is characterized in that the foundation block is fixed to the invert of the tunnel via a lock bolt. Production method.   In order to provide a partition wall that partitions the sidewalk space and the roadway space in the tunnel formed on a solid foundation, it is applied to the boundary between the concrete sidewalk and the roadway laid on the foundation via embankment etc. A foundation block made of metal or concrete, with one end fixed to the base and the other end a predetermined length above the ground. A foundation for a tunnel partition wall, wherein the foundation block is coupled to the other end of the lock bolt, and the foundation block is fixed to the foundation via the lock bolt. .   To provide a partition wall that partitions the sidewalk space in the tunnel formed on a solid foundation and the roadway space, the tunnel is formed on the boundary between the concrete sidewalk and the roadway laid on the foundation via embankment etc. A method for manufacturing a partition wall foundation, comprising: a metal or concrete foundation block in which a pillar of a tunnel partition wall is attached and fixed to an upper surface; and a lock bolt whose one end is penetrated and fixed in the foundation. And using one end of the lock bolt penetrating into the base and fixing the other end of the lock bolt on the ground for a predetermined length, and then connecting the base block to the other end of the lock bolt. A method for manufacturing a foundation for a partition wall of a tunnel, wherein the foundation block is fixed to the foundation via a lock bolt.

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