JP3416079B2 - Vertical tube installation structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical pipe capable of installing a vertical pipe having a spiral guideway therein by greatly reducing the ground excavation diameter. It relates to the installation structure of pipes. 2. Description of the Related Art Conventionally, in order to prevent the inside of a manhole from being damaged by sewage flowing down naturally in the manhole, for example, as disclosed in Japanese Patent Application Laid-Open No. 8-41915, A method of arranging a vertical pipe (drop shaft) has been implemented. As shown in FIG. 6, such a vertical pipe for sewage has a straight tubular pipe body a having a constant inner diameter, and a spiral pipe so that sewage does not flow straight down into the pipe body a. The sewage is attenuated by sewage flowing down spirally along the spiral guide path b, so that the sewage in the attenuated state is discharged from the lower end of the pipe main body a. It flows out from a discharge port c provided integrally with the portion. Therefore, the sewage flowing into the manhole M does not have a possibility of strongly colliding with the bottom of the manhole M, and the bottom of the manhole M is prevented from being damaged. However, in order to install the vertical pipe p for sewage in the manhole M, a working space is required. Therefore, the manhole M has a working space at the outer diameter of the vertical pipe p for sewage. Since it is necessary to form one with an inner diameter, the manhole becomes large, and it is difficult to form the intended high head sewer pipe because the excavation space cannot be sufficiently secured. There was a problem of becoming. SUMMARY OF THE INVENTION [0005] The present invention solves the above-mentioned conventional problems and greatly reduces the ground excavation diameter.
The vertical tube can be inserted and centered in the outer tube by its own weight.
An object of the present invention is to provide a vertical pipe installation structure that can be performed simultaneously . SUMMARY OF THE INVENTION [0006] The present invention relates to an outer pipe as a primary lining, which is pre-mounted along a longitudinal direction in a drilled hole excavated in the ground, and a pipe body. A vertical pipe provided with a spiral guide path for bending and flowing down sewage is installed, and elasticity for position adjustment for installation at an appropriate position in the outer pipe at two or more locations on the outer surface of the vertical pipe. As a member ,
It was provided to protrude outward from the fixed part and one end
One consisting of a rounded elastic part or a fixed part
An elastic plate provided to project outward from one end
A guide roll provided at the tip thereof is provided, and the position adjusting elastic member is interposed in the gap with the outer tube, and simultaneously inserts and centers the vertical tube into the outer tube by its own weight. It is a vertical pipe installation structure that can be used. In the present invention, as the material of the outer tube, steel or the like is preferable because of its high rigidity. In the present invention, examples of the material for forming the pipe main body portion and the spiral guide path of the vertical pipe include metals and resins. [0008] As the resin is a thermoplastic resin, such as polyvinyl chloride, polyethylene, polypropylene, acrylic resin and the like, in the thermosetting resin, unsaturated polyester resin, vinyl ester resin, epoxy resin and the like Reinforced with organic fibers such as inorganic fibers such as glass fibers, carbon fibers, aramid fibers, and vinylon fibers (FRP), and those having a resin mortar as an intermediate layer (FRPM) can also be used as appropriate. . The installation structure of a vertical pipe according to the present invention is provided in an outer pipe as a primary lining previously mounted along a longitudinal direction in a drilled hole excavated in the ground, and in a pipe main body. A vertical pipe provided with a spiral guide path for bending and flowing down sewage is installed, and elasticity for position adjustment for installation at an appropriate position in the outer pipe at two or more locations on the outer surface of the vertical pipe. Fixed as a member
Part and roundness provided to protrude outward from one end
Or a fixed part and its elastic part
An elastic plate provided to protrude outward from one end and its
A guide roll provided at the tip is provided, the position adjusting elastic member is interposed in a gap between the outer tube, and the vertical tube is inserted and centered in the outer tube by its own weight simultaneously. By doing so, the excavation diameter of the ground can be significantly reduced, and the installation of the vertical pipe by its own weight in the outer pipe can be formed safely. DETAILED DESCRIPTION OF THE INVENTION Hereinafter, an embodiment of the present invention with reference to the drawings. FIG. 1 is a sectional view showing an example of a vertical pipe used in the present invention. As shown in FIG. 1, in the vertical pipe 1, the pipe main body 11 includes an upper pipe main body 111, an intermediate pipe main body 112, and a lower pipe main body 113. In the upper pipe main body 111, a first spiral guide path 12 having a hollow cylindrical portion 14 fixed at the center is provided. No spiral guide path is provided in the intermediate tube main body 112. A spiral guide path 12 ′ having a hollow center is provided in the lower tube main body 113. Lower pipe main body 11
A discharge port 13 protruding outward is provided at the lower end of 3. FIG. 2 is an explanatory view of an example of a vertical pipe installation structure of the present invention using the vertical pipe 1 shown in FIG. A portion of the ground where a vertical pipe is to be installed is excavated in the vertical direction to form a borehole 2. The inner diameter of the drill hole 2 is slightly larger than the outer diameter of the vertical pipe 1 to be installed. Inside the borehole 2, a steel outer pipe 3 for reinforcement as a primary lining for receiving earth pressure along its longitudinal direction is mounted in advance. An opening that opens laterally is provided at the lower end of the outer tube. The sewage main pipe P and the lower end of the outer pipe 3 are connected by an outflow pipe 4 by construction from the sewage main pipe P side, and an opening is formed at the bottom of the outer pipe 3. An invert according to the level is cast on the bottom of the. A vertical pipe 1 shown in FIG. 4 is carried into the outer pipe 3 from above, and the lower end thereof abuts on the invert.
3 is set so as to coincide with the outlet 4. After the space between the periphery of the discharge port 13 and the lower end of the outer tube 3 is filled with a water-stopping material and water is stopped, a filling material is provided between the tube main body 11 of the vertical tube 1 and the outer tube 3. Filling material such as air mortar is filled to form a vertical pipe installation structure. FIG. 3 is a sectional view showing another example of the vertical pipe used in the present invention. As shown in the drawing, the vertical pipe 5 has a position adjusting elastic member for installing the vertical pipe 5 at an appropriate position in the outer pipe 3 at two or more places in the same circumferential direction on the outer surface of the pipe main body. 54, 54 are provided. The position adjusting elastic members 54, 54 are composed of metal fixing portions 541, 541 and rounded elastic pressure portions 542, 542 provided to protrude outward from one end thereof. , 541 are fixed to the outer surface of the pipe main body of the vertical pipe 5 by a fiber reinforced resin or the like. The outside of the resilient portions 542 and 542 before being carried into the outer tube 3 is slightly larger than the inner diameter of the outer tube 3. FIG . 4 is an explanatory view of an example of a vertical pipe installation structure of the present invention using the vertical pipe 5 shown in FIG. First, FIG.
As shown in (a), when the vertical pipe 5 is carried into the outer pipe 3 from above, the elastic members 54, 54 are provided on the upper end of the outer pipe 3.
Are pressed against each other. The vertical pipe 5 has elastic members 54, 5 due to its own weight.
4 is deformed so as to be depressed inward, and is carried in such a manner as to slide inside the vertical tube 5. When the lower end of the vertical tube 5 is carried in to the lower end of the outer tube 3, the elastic portions 54, 54 are moved. The gap between the outer tube 3 and the outer tube 3 is interposed in a state of elastic pressure. Thereby, the installation structure of the vertical pipe in which the vertical pipe 1 is installed at the center of the outer pipe 3 is formed. The position-adjusting elastic member is not limited to the one shown in FIG. 3. For example, as shown in FIG. 5, a metal fixing portion 611 and a resilient pressure provided to protrude outward from one end thereof. The position adjusting elastic member 61 in which the guide roll 613 is provided at the tip of the plate 612 and the pressing plate 612 may be used. EXAMPLES Hereinafter, the present invention will be described with reference to examples. Example As the vertical pipe 1, an upper pipe main body 111, an intermediate pipe main body 112, and a lower pipe main body 1 made of FRPM having a diameter of 1500 mm.
13 and an upper pipe main body 111.
A spiral guide path 12 made of FRP having a hollow cylindrical portion 14 fixed at the center is provided therein.
A spiral guideway 12 'made of RP is provided, and an upper pipe main body 111, an intermediate pipe main body 112, and a lower pipe main body 11 are provided.
3 is a position-adjusting elastic member 6 provided with guide rolls 613 formed of wheels with a rubber tire (tire diameter: 50 mm, outer gap between wheels: 1880 mm) at opposing portions of each outer surface.
The one to which 1 was fixed was used. As shown in FIG . 2, the inside diameter is 1880 mm, the wall thickness is 50 mm, and the drop 39 is a primary lining pre-installed along the longitudinal direction in the borehole 2 excavated vertically in the ground.
The lower tube main body 113 having the spiral guide path 12 ′ therein is carried into the outer tube 3 made of steel with its own weight and adjusted by the position adjusting elastic member 61 from above. The discharge port 13 was set so that its lower end was in contact with the invert 32 and the discharge port 13 matched the outlet 4.
The space between the periphery of the discharge port 13 and the lower end of the outer tube 3 was filled with a water stopping material to stop water. Next, in a state where the intermediate portion guide body portion 112 and a plurality of coupling, likewise, carried while performing position adjustment from above into the outer tube 3 and the insertion by its own weight by the position adjusting elastic member 61 The lower end was connected to the upper end of the lower tube main body 113 by an insertion method. Furthermore, the upper guide body portion 111 hollow cylindrical portion 14 with helical guide path 12 is provided inside, similarly, the outer tube 3
The lower tube main body 113 was connected to the upper end of the lower tube main body 113 by a receiving method while being inserted into the inside of the lower tube while performing insertion by its own weight and position adjustment by the position adjusting elastic member 61. As a result, the installation structure of the vertical pipe was successfully formed while simultaneously inserting and centering the vertical pipe 1 into the outer pipe 3 by its own weight. COMPARATIVE EXAMPLE For comparison, a vertical tube 1 having the same dimensions as those of the embodiment,
The installation structure of the conventional vertical pipe installation structure described with reference to FIG. 6 was performed using a member not provided with the position adjusting elastic member. As a result, in the case of the comparative example, it is necessary to form a manhole having an inner diameter of 3000 mm as compared with the case of the example, and the work for centering is complicated, and a long work time is required. did. Installation structure of the vertical tube of [0024] According to the present invention, since there is a as above, greatly reduces the drilling diameter of the ground, the outer
Simultaneous insertion and centering of the vertical tube in the tube by its own weight
The installation structure of the vertical pipe can be formed safely.
You.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view illustrating an example of a vertical pipe used in the present invention. FIG. 2 is a cross-sectional view illustrating an example of a vertical pipe installation structure of the present invention using the vertical pipe shown in FIG. FIG. 3 is a sectional view illustrating another example of a vertical pipe used in the present invention. FIG. 4 is a cross-sectional view illustrating another example of a vertical pipe installation structure of the present invention using the vertical pipe shown in FIG. FIG. 5 is a cross-sectional view illustrating still another example of a vertical tube used in the present invention. FIG. 6 is a cross-sectional view illustrating a conventional vertical sewer pipe and its installation structure. [Description of Signs] 1 Vertical pipe 3 Outer pipe 11 Pipe main body 12, 12 'Spiral guide path 13 Discharge ports 54 , 61 Elastic member for position adjustment

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E03F 5/02 E02D 29/12

Claims (1)

(57) [Claims] [Claim 1] Sewage water is introduced into an outer pipe as a primary lining previously mounted along a longitudinal direction in a drilled hole excavated in the ground, and into a pipe main body. vertical tube helical guideway is provided in order to flow down bent and is placed, in two or more positions of the outer surface of the vertical tube, as the position adjusting elastic member for mounting in a proper position of the outer tube , From the fixing part and one end
Such as a rounded elastic part provided to protrude to the side
Or projecting outward from one end of the fixed part
Pressure plate and a plan provided at its tip
An inner roll is provided, and the position adjusting elastic member is interposed in a gap between the outer tube and the outer tube, whereby the vertical tube can be simultaneously inserted and centered by its own weight in the outer tube. Vertical tube installation structure.