JP5976491B2 - Interior structure of underground structure - Google Patents

Description

  The present invention relates to an interior structure of an underground structure frame, and more specifically, an underground structure (tunnel) frame constructed below a railway track or road by penetrating a large number of lining elements into a natural ground. It relates to the interior structure.

  HEP & JES (High Speed Element Pull & High Speed Element Pull &) which is a method of constructing underground structures that are three-dimensionally intersecting the ground below railway tracks and roads. Jointed Element Structure) is known.

  As shown in FIG. 1, this construction method includes a large number of long steel lining elements 2, 3 arranged in parallel by traction or propulsion so as to divide the cross section of the structure on the ground below the track 1. After sequentially inserting into the mountain and placing concrete inside the element to construct a box-type ramen type or circular lining wall 4, excavating a natural mountain inside the lining wall 4, the lining wall 4 It is a construction method that uses as a structural body.

  As a lining element used in such a construction method, a standard lining element having a square cross section and a general lining element having a U-shaped cross section that is successively arranged on the side thereof, and a joint between each element are used. Has already been proposed (see Patent Literatures 1 and 2).

  These reference lining elements and general part lining elements are both made of steel, and their structures are shown in FIG. That is, the reference lining element 2 is formed in a quadrangular section by four plates 5, and a joint 6 having a substantially C-shaped section is provided along the longitudinal direction at each corner. Further, the general part lining element 3 is formed in a U-shaped cross section by three plates 7, 8, and joints 9, 10 having the same shape as the joint 6 at each corner and the open end of the plate 7. Are provided along the longitudinal direction. The reference lining element 2 is first penetrated into the ground, and then the general part lining element 3 is penetrated into the ground on both sides of the reference lining element 2.

  At that time, as shown in FIG. 2 only on one side, the general part lining element 3 is inserted into the natural ground while fitting the joint 10 on the open part side to the joint 6 of the reference lining element 2. In parallel with the general part lining element 3 previously inserted into the natural ground, a further general part lining element 3 is inserted into the natural ground, and the general part lining element 3 following this is The joint 10 on the open side is inserted into the natural ground while fitting the joint 9 on the corner side of the preceding general part lining element. In this way, the general part lining element 3 is sequentially penetrated into the ground, and concrete is placed inside the elements 2 and 3 to construct the lining wall 4 as shown in FIG.

  Although the lining wall 4 is used as a main body of the underground structure, an interior plate is often applied to the lining wall, that is, the inner surface of the casing 4 for aesthetic reasons. Conventionally, as an interior plate, an exterior plate or an interior plate used for a building or the like is used as it is. However, adjacent elements are connected to each other through joints 6, 9, and 10 extending in the longitudinal direction, and these joint portions protrude from the surfaces of the plates 5 and 7 of the element. It is not a flat surface.

  Therefore, conventionally, in order to ensure the flatness of the interior plate to be attached, a method of fixing the base material or the like in a state of being floated from the element surface and attaching the panel to this has been adopted. For this reason, in designing, it is necessary to consider a mounting margin of 150 to 200 mm, and it is necessary to widen the inner cross section of the dividing body 4, and the structure itself has to be uneconomical. .

  Moreover, as shown in FIG. 9, the embedded form 50 used for a concrete structure is diverted about the part which receives an impact from a motor vehicle etc. (refer patent document 3 also). In this case, the mounting bolt 51 or the like serving as a separator is welded to the element 3 and the embedded form 50 is attached so as to form a gap between the element 3 and then the gap is filled with mortar or the like. Also in this case, since it is necessary to form a gap between the embedded form 50 and the element 3, the inner cross section of the housing 4 must be expanded.

JP 2000-120372 A JP 2000-179282 A JP 2006-336191 A

The present invention has been made based on the technical background as described above, and achieves the following object.
It is an object of the present invention to provide an interior structure that can significantly reduce the mounting margin of the interior plate and thereby reduce the necessary internal air section of the underground structure housing as much as possible.

The present invention employs the following means in order to achieve the above object.
That is, the present invention is an underground structure formed by penetrating a large number of lining elements formed with joints having a substantially C-shaped cross section along the longitudinal direction in parallel with the natural ground while fitting the joints. The interior structure of the object body,
On the surface of the lining element that forms the inner surface of the housing, each lining element is provided with a plurality of rectangular interior plates that are directly fixed along the length direction of each lining element,
At both ends along the length direction of the lining element of this interior plate, a protruding portion that covers the joint protruding from the surface of the lining element is formed,
The projecting portions of the interior plate fixed to the lining elements adjacent to each other face each other so as to form a joint above the joint, and the joint is filled with a sealing material. It is in the interior structure of the structure frame.

  In the interior structure, it is preferable to adopt a configuration in which an elastic mat is provided on the back surface of the interior plate. Specifically, the interior plate is fixed to the lining element by a plurality of bolts and nuts.

  According to this invention, since the interior plate is directly fixed to the element surface which is the inner surface of the housing, it is possible to reduce the mounting margin of the interior plate. This makes it possible to reduce the necessary internal cross-section of the frame by the element, and to construct an underground structure that is excellent in economic efficiency. Also, the joint protruding from the element surface is covered with a protruding portion provided on the interior plate, and a joint is formed between the protruding portions of the interior plate fixed to the elements adjacent to each other, so that the projection is sealed. The part is completely hidden, and the appearance is excellent.

It is sectional drawing which shows the underground structure housing to which the interior structure by this invention is applied. It is sectional drawing which shows the lining element used for construction of an underground structure housing. It is a front view which shows embodiment of the interior structure by this invention. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. It is sectional drawing which expands and shows the a part of FIG. It is a front view which shows another embodiment. FIG. 7 is a cross-sectional view taken along line B-B in FIG. 6. It is sectional drawing which expands and shows the b part of FIG. It is sectional drawing which shows the conventional interior structure.

  Embodiments of the present invention will be described below with reference to the drawings. 3, 4 and 5 show an embodiment of the interior structure according to the present invention which is applied to the inner surface of the underground structure housing described with reference to FIGS. 1 and 2. In the interior structure according to the present invention, a large number of rectangular interior slabs 11 are directly fixed to the surface of the lining element 3 forming the inner surface of the casing along the length direction of the element for each lining element 3 ( The same applies to the lining element 2). The fixed interior plates 11 are arranged in a row for each lining element 3 and are arranged so that adjacent ones are in contact with each other.

  As the interior plate 11, a lightweight panel such as a plastic plate, aluminum, or enamel is used in order to minimize the weight and reduce the mounting work. A wire mesh 12 for reinforcement is embedded in the interior plate 11. Further, since the surface of the lining element 3 is slightly uneven due to welding lines or the like, as shown in FIG. 5, a rubber mat 13 is provided on the back surface of the interior plate 11, and this rubber mat 13 is connected to the interior plate 11 and the element. 3 is sandwiched between the two.

  The thickness of the interior plate 11 including the rubber mat 13 is larger than the protruding height of the joints 9 and 10 from the element surface. And the protruding part 14 which covers the couplings 9 and 10 is provided in the both ends along the length direction of the element 3 of the interior plate 11. The inner surface of the protruding portion 14 is a curved surface 15 so as to follow the outer shape of the joints 9 and 10.

  A plurality of recesses 16 are provided on the surface of the interior plate 11. The recess 16 is provided with a hole penetrating from the bottom surface to the interior plate back surface, and the interior plate 11 is fixed to the element 3 by bolts and nuts 17 inserted into the hole. The protruding portions 14 and 14 of the interior plates 11 and 11 fixed to the adjacent elements 3 and 3 face each other so as to form a joint 18 above the joints 9 and 10. This joint 18 is filled with a sealing material.

  6, 7 and 8 show another embodiment of the interior structure according to the present invention. The above embodiment is a case where the interior plate 11 is 50 mm thick, but this embodiment is a case where the interior plate 11 is 80 mm thicker than that. In the case of this embodiment, if the structure is the same as that of the above embodiment, the weight per interior plate is increased. Therefore, in this embodiment, a plurality of recesses 20 are provided on the back surface of the interior plate. Other configurations are the same as those in the above embodiment.

  As described above, according to the present invention, since the interior plate 11 is directly fixed to the element surface which is the inner surface of the housing 4, the mounting margin of the interior plate that conventionally required 150 to 200 mm is reduced to 75 to 100 mm. be able to. This makes it possible to reduce the necessary internal cross-section of the frame by the element, and to construct an underground structure that is excellent in economic efficiency. Further, the joints 9 and 10 protruding from the element surface are covered by the protruding portion 14 provided in the interior plate, and a joint is formed between the protruding portions 14 and 14 of the interior plate fixed to the elements adjacent to each other. Since it is sealed, the protrusion is completely hidden, and the appearance is excellent.

2 Standard lining element 3 Clining element 4 Capping wall (underground structure frame)
6, 9, 10 Joint 11 Interior version 12 Wire mesh 14 Projection part 17 Bolt / Nut 18 Joint

Claims (3)

In an interior structure of an underground structure housing formed by penetrating a large number of lining elements formed with joints having a substantially C-shaped cross section along the longitudinal direction in parallel with the ground while fitting the joints. There,
On the surface of the lining element that forms the inner surface of the housing, each lining element is provided with a plurality of rectangular interior plates that are directly fixed along the length direction of each lining element,
At both ends along the length direction of the lining element of this interior plate, a protruding portion that covers the joint protruding from the surface of the lining element is formed,
The projecting portions of the interior plate fixed to the lining elements adjacent to each other face each other so as to form a joint above the joint, and the joint is filled with a sealing material. The interior structure of the structure frame.   The interior structure of an underground structure housing according to claim 1, wherein an elastic mat is provided on the back surface of the interior plate.   The interior structure of an underground structure housing according to claim 1 or 2, wherein the interior plate is fixed to the lining element by a plurality of bolts and nuts.

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