JP3858162B2 - Underwater structure bonding equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an underwater structure joining apparatus for deforming underwater structures such as a submerged tunnel in response to an earthquake or other external force and maintaining pressure resistance while maintaining a complete water stoppage state.
[0002]
[Prior art]
Conventionally, a “sinking method” in which an underwater tunnel is constructed by connecting adjacent elements after being set in a trench having a tunnel element (hollow structure as referred to in the present invention) attached thereto is commonly practiced. In the “sinking method”, a flexible joint that is watertight and pressure resistant and can withstand external forces such as earthquakes is used between the elements.
[0003]
[Problems to be solved by the invention]
The conventional joint must have sufficient pressure resistance and water tightness, but the material that originally satisfies the pressure resistance and the material that satisfies the water tightness must satisfy the opposite characteristics. was there. Therefore, in order to satisfy both, there is a problem that a complicated and enormous amount of members are required and the cost required for pressure-resistant water stop increases.
[0004]
[Means for solving the problems]
However, according to the present invention, the material and the structure are determined in accordance with each purpose by interposing the pressure-resistant means and the water-stop means separately (separately independent, at least in a separated state) at the joint portion of the hollow structure. As a result, the structure is relatively simple, the amount of material used is small, and the joining apparatus is configured easily and inexpensively to solve the above-mentioned conventional problems.
[0005]
That is, the present invention has a fixing means for abutting and fixing a contact surface with a hollow structure on one side on a joint surface of a hollow structure installed in water, and an opposing hollow structure on the other side. There are water- stopping means that are provided with a plurality of elastic ridges to make elastic contact with the joint surface, and there are fixing means that abuts and fixes the joint surface of the hollow structure on one side, facing the other side An abutting means for contact with the joint surface of the hollow structure, and an elastic member that elastically deforms according to the magnitude of an external force interposed between the fixing means and the abutting means, and the fixing means, The elastic member and the abutting means are integrated with the compression resistance means as a compression resistance block, and the adjacent hollow structure is abutted and tightened and joined, and the water stop means is provided at the base of the elastic water stop strip. A retaining protrusion of a presser foot bolted to the joint surface of the hollow structure is secured to the retaining protrusion, and the contact means is Surface abuts the abutment surface of the hollow structure, a bonding apparatus of the underwater structure, characterized in that the metal plate for fixing the elastic member to the other side.
[0006]
Fixing means compression resistance block to the next, having a contact fixing surface of the hollow structure on one side, a bolt passing through the metal block having a contact fixing surface of the elastic member to the other side, the hollow structure The metal block is fastened and fixed with a nut embedded in the joint surface of the object .
[0007]
The water stop means in the invention is a material such as rubber having a large elastic limit, and usually 2 to 4 elastic ridges, and the ridge that contacts the outside is more than the ridge that contacts the inside. Thin and easy to deform. The ridge is curved so as to obtain a contact force by a normal water pressure. Bolts and nuts may be used as the fixing means. However, since positional accuracy is required, the fixing means for fixing the water stopping means is, for example, a hanging protrusion provided on the water stopping means. A latch that stops is preferable. In the case of such a latch, it is not necessary to consider the position of the bolt hole, unlike the bolt and the nut.
[0008]
The water stopping ridge used in the invention is a soft natural rubber or the like having a large elastic limit or a synthetic rubber. The elastic member interposed in the pressure-resistant means is a pressure-resistant rubber such as natural rubber or synthetic rubber, and can be reinforced with a reinforcing fiber or the like as necessary.
[0009]
The metal plate used for the pressure-resistant means of the present invention is a stainless steel plate or other strong metal plate, and in the case of a metal plate that easily rusts, it is necessary to carry out a rust prevention treatment.
[0010]
The compression resistance means is arranged at a predetermined interval on the joint surface of the hollow structure, but the water stop means is usually arranged in an annular shape (no cut). Tightening means between the hollow structures is interposed at a position without the compression resistance means.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is an underwater structure joining apparatus in which a water stop means and a compression resistance means are separately and independently provided on a joining surface of a hollow structure. The water stop means is configured to contact and fix one side to the hollow structure and to elastically contact the joint end surface of the adjacent hollow structure with the other side as an elastic protrusion, and obtains a contact force using water pressure. There are many things.
[0012]
【Example】
An embodiment of the present invention will be described with reference to the drawings. The end face of the coated metal plate 2 of the hollow structure 1 made of reinforced concrete is brought into contact with a contact surface 5a of a water stop strip 5 made of rubber and having large and small protrusions 3 and 4, and the water stop strip 5 is latched. The retaining protrusions 8 and 8 of the presser foot 7 and 7 are latched in the grooves 6 and 6, and the retaining protrusions 8 and 8 of the presser footer 7 and 7 are latched. The bolts 9 and 9 are fastened and fixed to the nuts 10 and 10 embedded in the hollow structure 1.
[0013]
One side surface of the metal block 12 of the compression resistance block 11 is brought into contact with the joint surface of the hollow structure 1 and is fastened and fixed to the nut 14 embedded in the hollow structure 1 by a bolt 13. One side surface of the pressure-resistant rubber plate 15 is abutted and fixed to the other side surface of the metal block 12, and the metal plate 16 is abutted and fixed to the other side surface of the pressure-resistant rubber plate 15 (FIGS. 1, 2, and 3). . In the figure, 1a is an adjacent hollow structure, and 2a is a coated metal plate.
[0014]
The compression resistance block 11 is arranged at a predetermined interval (for example, blocks having a pressure resistance of 200 kg / cm ² are arranged at a pitch of 1000 mm), and the joints 18 of the connection cables 17 and 17 are arranged using the block gap (see FIG. 5, 6).
[0015]
Since the waterstop 5 is curved outward (water side) as shown in FIG. 1 at the time of joining, if the water pressure is applied as indicated by an arrow 20, the contact surface 4a of the small protrusion 4 is The pressure is increased by the water pressure to keep the water tighter. The large ridge 3 is curved toward the small ridge 4 to ensure water tightness, and the small ridge 4 is not reversed as indicated by the arrow 21 when the joint surface is opened. I support it. Therefore, the protrusion 3 is formed thicker than the small protrusion 4. In the figure, reference numeral 22 denotes a core material such as metal, which prevents deformation and reinforces the waterstop 5. The water stop strip 5 is provided with large and small ridges 3 and 4, but the number of ridges is not limited to two but can be two to four as required.
[0016]
As shown in FIG. 7, for example, the hollow structure 1 of the present invention is provided with roadways 23, 23 in the center, and provided with an installation hole 24 for evacuation paths, drainage, etc. on one side, evacuation paths, electricity, gas, drainage, etc. The present invention can be applied to all structures having various cross-sectional structures conventionally employed. In other words, regardless of the cross-sectional shape, it is impossible to cope with earthquakes and other strong external forces unless they are connected in a state that has both watertightness and pressure resistance.
[0017]
As described with reference to FIGS. 1, 2, and 3, the waterstop 5 is provided in an annular shape on the connection end surface of the hollow structure, and the compression resistance blocks 11 are disposed at predetermined intervals (FIGS. 4 and 5). ). Further, connecting cables 17 and 17 and a joint 18 thereof are arranged between the compression resistance blocks 11. The joint 18 is accommodated in the cavities 26 and 26 provided close to the end surfaces of the hollow structures 1 and 1a, but the adjacent joints 18 and 18 are arranged alternately in the hollow structures 1 and 1a. Is preferred.
[0018]
In the joint 18, as in a normal structure, the nuts 28, 28 are opposed to the coupler 27, and the nuts 28, 28 are screwed into screw parts 17 a, 17 a provided at the ends of the cables 17, 17. When the coupler 27 is rotated, the cables 17 and 17 are loosened in the directions of arrows 29 and 29 or pulled in the directions of 30 and 30 through the nuts 28 and 28 (the screw portions 17a and 17a are reverse screws). .
[0019]
Therefore, if the coupler 27 is rotated so as to be pulled in the direction of the arrows 30 and 30, a predetermined stress can be introduced into the connection portion of the hollow structures 1 and 1a.
[0020]
In the above, when the hollow structure 1a is already installed and the hollow structure 1 is newly connected, the end surface of the hollow structure 1a is changed to the end surface of the hollow structure 1 by a conventionally known method (for example, using a jack). When pulled while facing each other, the water stop strip 5 on the abutting end surface is changed from the state of FIG. 3 to the state of FIG. 2 and then completed to the state of FIG.
[0021]
The structure and material of the compression resistance block 11 are not limited to the above-described embodiment, and the structure is a structure that absorbs the pressure at the time of pressurization of the hollow structure 1 appropriately. Can do. That is, the object can be achieved if a joint of a hollow structure is completed in cooperation with the waterstop.
[0022]
【The invention's effect】
According to the present invention, since the water stop means and the compression means are separately provided at the joint portion of the underwater structure, materials having different characteristics can be used for different purposes and can be rationalized. Accordingly, with the rationalization of the joining operation and the simplification of the structure, there is an effect that a high-quality joining device can be provided at a lower cost.
[Brief description of the drawings]
FIG. 1 is a partially enlarged cross-sectional view in a bonded state of an embodiment of the present invention.
FIG. 2 is a partially enlarged cross-sectional view before tightening.
FIG. 3 is a partially enlarged cross-sectional view showing a state in which joint portions are also made to face each other.
FIG. 4 is a partially enlarged view showing the arrangement of the waterstop and the compression resistance block, which is also a part of the end surface of the hollow structure.
FIG. 5 is an enlarged partial cross-sectional view showing the arrangement of a cable for tightening.
FIG. 6 is a partially enlarged cross-sectional view of the same cable for tightening.
FIG. 7 is a perspective view of the same hollow structure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hollow structure 2 Metal coating 3 Large protrusion 4 Small protrusion 5 Water stop 6 Stop groove 7 Presser foot 8 Stop protrusion 9, 13 Bolt 10, 14 Nut 11 Compression resistance block 12 Metal block 15 Pressure-resistant rubber plate 16 Metal plate 17 Connecting cable 18 Joint 22 Core material 23 such as metal Roadway 24, 25 Installation hole 26 Cavity 27 Coupler 28 Nut

Claims (2)

The joint surface of the hollow structure installed in the water has a fixing means for abutting and fixing the contact surface with the hollow structure on one side, and elastically contacts the joint surface of the opposite hollow structure on the other side. It has water- stopping means that is provided with a plurality of elastic protrusions to make an elastic water- stop, and fixing means that contacts and fixes the joint surface of the hollow structure on one side, and joins the opposing hollow structure on the other side. An elastic member having a contact means with a surface and elastically deforming corresponding to the magnitude of an external force is interposed between the fixing means and the contact means, and the fixing means, the elastic member, and the contact And a compression resistance means that integrates the means into a compression resistance block , abutting adjacent hollow structures and tightening and joining, and the water stop means is attached to a hooking protrusion provided at the base of the elastic water stop. The retaining member of the presser foot which is bolted to the joint surface of the hollow structure is fixed by being hooked, and the abutting means has a hollow structure on one side. Abuts the abutment surface, the bonding apparatus of the underwater structure, characterized in that the metal plate for fixing the elastic member to the other side. The compression resistance block fixing means includes: a bolt that penetrates a metal block having a contact fixing surface with a hollow structure on one side and a contact fixing surface of an elastic member on the other side; bonding apparatus of the underwater structure according to claim 1, wherein that, characterized in that the metal block with a nut embedded in the surface to secure tightening.

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