JP4130396B2 - Propulsion method pipe and expansion and contraction flexible joint of propulsion method - Google Patents

Description

  The present invention relates to a pipe for a propulsion method and an expansion / contraction flexible joint of a propulsion pipe for a propulsion method, and accurately transmits propulsion force by a thrust jack to perform propulsion work effectively and appropriately, and withstands a tensile force together with a compression force. It can be handled in the same way as general-purpose propulsion pipes, and it can be easily applied to and removed from the thrust receiving material after propulsion work, can be easily applied to various propulsion pipes, and can respond promptly to any installation conditions as appropriate. It is an object of the present invention to provide an expansion / contraction flexible joint for a propulsion pipe for a propulsion method.

  The propulsion method uses a shaft that has been excavated in a part of the construction area without excavating the entire sediment layer from the ground surface. The propelling bar provided in the above is acted to excavate and propel, and the propelling pipe is sequentially replenished into the shaft. In other words, it is not necessary to excavate the entire depth direction of the construction area from the surface part into a groove shape, and the propulsion pipe is set as it is in the soil layer, so handling or construction thereof is relatively simple, and it takes a short time. It has a great merit that the intended construction can be completed inside, and today it is widely adopted and constructed in various directions.

  While the propulsion method pipeline formed by the propulsion method as described above has the advantages as described above, it is rigid because it is straightly constructed by the strong propelling force of the propulsion mechanism. In addition, there is a drawback that this propulsion method pipeline is easily damaged or damaged by the stress when an earthquake or ground deformation occurs after the construction.

  In addition, the propulsion method pipeline damaged or damaged as described above is damaged even if the process propulsion construction is simple and quick, and the damaged part is in the formation, so there is a disadvantage that requires significant man-hours to repair it. is there. In addition, the propulsion structure becomes a series of structures, and the damage caused by earthquakes, ground deformation, etc., structural changes due to damage, and damage caused by the propagation of destructive force usually covers a wide range. However, even from these points, man-hours and costs are inevitably increased.

  The present invention has repeatedly studied to eliminate the disadvantages in the prior art as described above, and employs an expansion / contraction flexible joint that employs a specific expansion / contraction flexible mechanism such as a thrust receiving material to withstand the thrust of the propulsion mechanism. By successfully absorbing the stress generated in the underground propulsion pipe due to the earthquake and ground deformation as described above, it has succeeded in effectively eliminating the disadvantages of the conventional method as described above. That's right.

  (1) Between the inner pipes arranged in the outer sleeve between the propulsion main pipes, a state in which the connecting bolt of the thrust receiving member is removed from the propulsion pipe interposing state by the bolted thrust receiving member can be achieved. Propulsion method conduit characterized by the above.

  (2) The propulsion method conduit according to (1) above, wherein the propulsion main pipe is a synthetic steel pipe in which concrete is lined with a steel pipe.

  (3) A joint body interposed between propulsion main pipes, wherein a thrust receiving material is joined and formed between inner pipes provided in an outer sleeve via a double bolt type coupling mechanism. The expansion and contraction flexible joint of the propulsion pipe for the propulsion method.

  (4) Inner pipes are installed in the outer sleeves provided between the propulsion main pipes, and screwed between the end face plates provided at the ends of the inner pipes and the interposition plates attached in the outer sleeves. An expansion / contraction flexible joint for a propulsion pipe for propulsion method, characterized in that a double bolt type coupling mechanism in which a screwing shaft is coaxially incorporated with a cylinder is provided symmetrically.

  (5) An inner pipe end plate is provided by projecting the tip of the inner pipe from the end of the outer sleeve between the propulsion main pipes, and the inner pipe end plate is joined to the propulsion main pipe end face on the peripheral side. The propulsion according to any one of (3) or (4), wherein a partial end plate is attached and a skin plate is attached to a sleeve provided on an outer surface of the inner pipe. Telescopic flexible joint for construction method propulsion pipe.

  (6) An elastic ring member is interposed between the inner pipe and the outer sleeve, and a tongue piece for joining and sealing the inner pipe and the outer sleeve surface is provided at the opening end of the elastic ring member. The expansion / contraction flexible joint for a propulsion pipe for propulsion method according to any one of (3) to (5).

  (7) The expansion / contraction flexible joint for a propulsion method propulsion pipe according to any one of (3) to (6), wherein the propulsion main pipe is a synthetic steel pipe in which concrete is lined on a steel pipe.

  (8) The propulsion main pipe is a synthetic steel pipe in which concrete is lined with a steel pipe, and a fitting projection is provided on one end side of the synthetic steel pipe, and the fitting projection is received on the other end side. So as to form a fitting recess by holding a sealing material filling gap between the welded portion and a welding gap between the distal end of the fitting recess and the outer peripheral side of the proximal end of the fitting projection. An expansion / contraction flexible joint for a propulsion pipe for a propulsion method.

  According to the present invention as described above, the connecting bolt of the thrust receiving member is connected to the inner pipe disposed in the outer sleeve between the propelling main pipes from the propulsion pipe interposing construction state by the bolt receiving thrust receiving material. By properly removing the thrust jacks, the propulsion force generated by the thrust jacks can be accurately transmitted for effective propulsion work, and after the construction, the thrust receiving material can be flexed appropriately to respond immediately to the ground and ground fluctuations. It becomes an underground structure and can have favorable earthquake resistance or ground resistance in propulsion construction equipment.

  In addition, according to the present invention, since the propulsion main pipe is a synthetic steel pipe in which concrete is lined with a steel pipe, it has both toughness or tensile resistance strength as a steel pipe and compressive strength or corrosion resistance as a concrete pipe. Produce a construction line with excellent durability.

  Furthermore, the present invention is a joint body interposed between propulsion main pipes, and a thrust receiving material is joined between inner pipes provided in an outer sleeve via a double bolt type coupling mechanism. Forming a stable connection relationship through the formation, stable propulsion work at the time of propulsion work, etc., withstands not only compression but also tensile force, and fixes dimensions during product transportation. Satisfy both stable handling, operability and propulsion workability.

  In the present invention, an inner pipe (for example, sometimes called a spigot pipe) is provided in an outer sleeve provided between propulsion main pipes, and an end face plate provided at the inner pipe end portion is provided. The above-described two-bolt type coupling mechanism in which a screwing shaft is coaxially installed with respect to the screwing cylinder between the outer plate and the interposed plate is also provided as described above. The characteristics can be obtained at a higher level to ensure favorable propulsion construction characteristics.

  Further, in the present invention, the inner pipe end plate is provided by projecting the tip of the inner pipe from the end of the outer sleeve between the propulsion main pipes, and the propulsion main pipe end face portion is provided on the peripheral side of the inner pipe end plate. A partial end plate to be joined is attached and a skin plate is attached to the sleeve provided on the outer surface of the inner pipe so that it can be easily and appropriately connected to the propulsion main pipe. Ensures the deformability, achieves stable and appropriate connection to the propulsion main pipe, and obtains a preferable propulsion construction action between the different pipe bodies.

  Further, in the present invention, an elastic ring member is interposed between the inner pipe and the outer sleeve, and a tongue piece portion that is bonded and sealed to the inner pipe and the outer sleeve surface is provided at the opening end of the elastic ring member. Thus, a stable sealability is ensured between the inner pipe and the outer sleeve during propulsion work, and an appropriate expansion / contraction flexible joint for the propulsion method is formed and propelled.

  Propulsion main is a synthetic steel pipe with concrete lined on steel pipe, so that it provides a high-strength and high-strength main pipe that combines a steel pipe with excellent tensile strength and concrete with excellent compression resistance. Providing a propulsion main that can sufficiently withstand the compressive force during propulsion, and ensuring that the intended propulsion method is implemented reasonably and accurately.

  Further, the propulsion main pipe is a synthetic steel pipe in which concrete is lined with a steel pipe, a fitting protrusion is provided on one end side of the synthetic steel pipe, and the fitting protrusion is received on the other end side, and the fitting protrusion A fitting recess is formed by holding a sealing material filling gap between and a welding gap between the distal end of the fitting recess and the outer peripheral side of the base end side of the fitting protrusion described above. As a result, the tip of the propulsion main that has been sequentially charged in the construction of the propulsion work is brought into contact with the rear end of the preceding propulsion main, and the fitting protrusion and the fitting recess are accurately fitted. Combined, an easy and reliable weld joint is smoothly formed, and an efficient and high-strength connection is appropriately formed.

  A specific embodiment of the present invention as described above will be described with reference to the accompanying drawings. The outline of the propulsion method employing the expansion / contraction flexible joint according to the present invention is as shown in FIGS. A propulsion mechanism 52 such as a jack is set on one side of the shaft 51 formed in the soil layer 50, and the propulsion mains 55 and 55 are sequentially connected. The propulsion construction and the connection construction within the soil layer 50 are the same as those generally performed conventionally.

  In the present invention, the propulsion main 55 as described above is propelled and constructed to the vicinity of the side wall of the shaft 51, and then the propulsion head of the propulsion mechanism 52 is moved backward to propel the propulsion mechanism 52 and the main pipe 55 propelled. After taking an interval at which a new propelling pipe can be inserted, the expansion / contraction flexible joint body 10 as shown in FIG. 3 and the like according to the present invention is suspended from the interval portion as shown in FIG. The tip end portion of the flexible joint body 10 is welded 53 on the tail end of the tail propulsion main pipe 55.

  If the flexible joint body 10 is welded and connected to the rear propulsion main pipe 55 as described above, the flexible joint section 10 adopts the propulsion mechanism 52 so that the flexible joint section 10 and the preceding propulsion main pipe 55 are used. , 55 are propelled into the soil layer 50, and the flexible joint body 10 is inserted into the side wall of the shaft 51 as shown in FIG. A new main propulsion main body 55 is suspended between the main propulsion mechanism 52 and the propulsion mechanism 52, and the connecting portions are welded. The propulsion main body 55 is used to propel the flexible joint body 10 deeply into the soil layer 50. Is.

  As described above, the flexible joint body 10 of the present invention that is supplied and connected to the propulsion main pipe 55 is shown in FIG. 3 and subsequent figures, and particularly its main part is shown enlarged in FIG. That is, for the propulsion main pipe 55, as shown in part in FIGS. 3 and 5, concrete 54 is lined on the inner surface of the outer tube 56, and a lining steel pipe body 55 is shown by synthetic molding. What was integrally formed by connection etc. can be employ | adopted widely.

  As described above, the propulsion main pipe 55 as a synthetic lining pipe formed by lining the concrete 54 on the inner surface of the outer pipe 56 has excellent tensile strength by the outer pipe 56 and excellent compressive strength by the lining concrete layer 54. The projecting end portion of the outer tube 56 is formed with a welding groove, and the propulsion main pipe 55 or the flexible joint body 10 are sequentially connected to perform propulsion work. In the present invention, the flexible joint body 10 is screwed into the screwing cylinder 5 as a thrust receiving member between the inner pipes 3 and 3 provided in the outer sleeve 2 as shown in FIGS. The shafts 4 are incorporated in a coaxial state, and the coupling mechanisms 11 and 11 are formed symmetrically by forming double bolts in which the screwing cylinder 5 is provided with a nut 6.

  Further, the end portion 3a of the inner pipe 3 is protruded from the end portion of the outer sleeve 2, and the partial end plate 3b joined to the propulsion main pipe end surface portion 55 is attached to the peripheral side of the inner pipe end plate 3a. A skin plate 7 is attached between the outer sleeve 2 provided on the outer surface of the pipe 3.

  Further, an elastic ring member 8 is interposed between the inner pipe 3 and the outer sleeve 2 described above, and a tongue piece portion 8a for joining and sealing the surfaces of the inner pipe 3 and the outer sleeve 2 at the opening end of the elastic ring member 8. , 8a are provided so as to accurately seal between the inner pipe 3 and the outer sleeve 2, and the inside of the outer sleeve 2 and the inner pipe 3 is utilized using the pressure condition in the propulsion pipe method pipe line. Let it seal.

  The inner pipes 3 and 3 facing the outer sleeve 2 have the thrust receiving member 1 disposed between the end plate 57 and the ring plates 42 and 42 attached to the inner surface of the intermediate portion of the outer sleeve 2. As such a thrust receiving member 1, a double bolt type is recommended. That is, the screwing cylinder 5 is used together with the screwing shaft 4, the head 5 a of the screwing cylinder 5 is attached to the end of the inner pipe 3, and the screwing shaft 4 is coaxially connected to the screwing cylinder 5. The nut 6 that is inserted and screwed into the screwing cylinder 5 is engaged with the interposition ring 9 disposed on the ring plate 42 described above.

  The screw shaft 4 is inserted through an end face plate 41 into a screw tube cap 5a attached to the end of the inner pipe 3, and is fastened to the ring plate.

  That is, the thrust receiving mechanism for withstanding the thrust by the jack 52 provided in the shaft 51 as shown in FIGS. 1 and 2 is a double bolt type by the screw shaft 4 and the screw cylinder 5 as described above. Thus, the thrust as generated by the propulsion jack mechanism 52 can be accurately transmitted by such a mechanism as shown in FIGS. 3 to 5, and a stable propulsion method can be implemented. Moreover, the double bolt structure as described above can appropriately adjust the total length of the assembled equipment.

  In addition, the above-described invention according to the present invention can withstand not only compression but also moderate tensile force, so that it is possible to appropriately fix the dimensions during transportation of the equipment as a product, and to enable preferable and stable transportation handling, and the center bolt. And it is possible to remove the screwed cylinder that is engaged with it, so that the thrust transmission system can be easily eliminated and damage to the propulsion works in general due to earthquakes and ground deformation can be avoided.

  The handling of the expansion / contraction flexible joint part as described above at the time of propulsion construction is exactly the same as a general propulsion pipe, does not require special skills, and the installation location of the expansion / contraction flexible joint is arbitrary. Furthermore, there are various types of this kind of propulsion pipes, such as concrete pipes, cast iron pipes, steel pipes, or composite pipes thereof. However, the expansion / contraction flexible joint according to the present invention can be any one of them by adjusting the shape of the connection part slightly. Appropriately applicable to this, it can be used freely.

  FIG. 6 to FIG. 8 show specific examples of a composite pipe made of steel pipe and concrete that can obtain the advantages of the present invention to a higher degree by applying the present invention. That is, it is the same as the propulsion main pipe 55 shown in FIG. 5 and the like described above in that it is a composite pipe body in which a concrete layer 54 is formed and integrated in a jacket 56 made of steel pipe. A joint male portion 59 as shown in FIG. 5 is formed, and a joint female portion 60 for receiving the joint male portion 59 is provided on the other end side, and the joint is moderately propelled in the propulsion construction as described above. A fitting male part 59 is fitted to the female part 60 to be fitted as shown in FIG. 8, and the synthetic pipe is connected between the end face members 62 and 62 which are oppositely joined in such a fitting connection state as shown in FIG. Welding 66 is performed on the inner surface side of the body.

  That is, a gap 61 is formed between the jackets 56 and 56 made of steel pipes, and a sealing material 63 is provided at the fitting end portion of the fitting jacket 69 provided on the outer surface of the joint male part 59 in parallel with the jacket 56. Are positioned and attached, and a stable joint portion can be formed efficiently and easily as part of the work at the construction site by obtaining the above-described welding 66 while obtaining an appropriate displacement bendability in the gap 61 portion. That is, even if the entire circumference welded portion 66 is formed in this way, an appropriate play is formed between the joint portions 59 and 60 on the entire circumference, and preferable bendability is ensured.

  In any case, according to the present invention, welding is adopted regardless of whether the concrete portion suitable for civil engineering work is structurally main by adopting the synthetic pipe as shown in FIGS. It is possible to integrate by the preferable connection connection construction work, and to carry out the continuous construction smoothly, but in the flexible joint body formed even if such connection connection is made, it is possible to prevent damage to the pipe line in general. Can be obtained appropriately. Further, the synthetic tube 65 as described above is provided with a lifting hole 70, which is lifted in the lifting hole 70 and moved and set to a required position.

  As described above, the invention according to the present invention can be appropriately adopted in the propulsion pipe in the propulsion method so that smooth and advantageous propulsion pipe construction can be carried out. It is possible to properly avoid damage and destruction of the entire propulsion construction pipeline due to ground deformation, etc., and it can be applied almost freely to various propulsion pipes, and effective and accurate construction within a short time It is an invention that has the effect that it can be achieved, has a high effect on the propulsion method, and has a large industrial applicability.

It is explanatory drawing of the construction state which suspended the flexible joint part by this invention between the propulsion main pipes in the shaft. It is explanatory drawing of the state which pushed the flexible joint part body and the advance propulsion main body into the shaft side wall soil layer from the state of FIG. 1, and suspended and supplied the new propulsion main body. It is a partial notch side view of the flexible joint part part by this invention. FIG. 4 is a partial cutaway end view taken along a line i in FIG. It is the partial slope figure which showed the principal part structure of the flexible joint part body by this invention. It is the side view which showed the partial cross section of another preferable synthetic steel pipe about the propulsion main pipe | tube employ | adopted by this invention. It is sectional drawing of the joint part about the synthetic steel pipe shown in FIG. FIG. 8 is a partial cross-sectional view illustrating a fitting connection state between a joint female portion and a joint male portion of the propulsion main pipe according to FIGS. 6 and 7.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thrust receiving member 2 Outer sleeve 3 Inner pipe 3a Inner pipe end plate 3b Partial end plate 4 Screw shaft 5 Screw cylinder 5a Screw cylinder cap 6 Nut 7 Skin plate 8 Elastic ring member 8a Tongue piece 9 Intervening ring 10 Flexible joint body 11 Connection mechanism (by double bolt type)
DESCRIPTION OF SYMBOLS 41 End plate 42 Ring plate 43 Reinforcement plate 50 Soil layer 51 Shaft 52 Propulsion mechanism 53 Field welding 54 Concrete layer 55 Propulsion main body 56 outer pipe body 57 end plate 58 propulsion main end which is a synthetic pipe lining steel pipe Face plate 59 Joint male part 60 Joint female part 61 Gap part 62 End face material 63 Seal material 65 Composite pipe 66 Welded part 67 Positioning material 68 Locking material 69 Fitting jacket 70 Lifting hole

Claims (4)

An elastic ring member is interposed between the outer sleeve and an inner pipe provided in an outer sleeve provided between the propulsion main pipes, and the inner pipe surface and the outer side are disposed at the opening end of the elastic ring member. A tongue piece for joining and sealing to the sleeve surface is provided to seal between the inner pipe and the outer sleeve, and between the inner pipe and between the inner pipe and the outer sleeve, the elastic ring member The state where the inner pipe and the outer sleeve are sealed with the elastic ring member and the connecting bolt of the thrust receiving member is removed from the state where the propulsion pipe is installed with the thrust receiving member sealed with bolts and connected. Propulsion method conduit characterized by the above.   The pipe for a propulsion method according to claim 1, wherein the main propulsion pipe is a synthetic steel pipe in which concrete is lined with a steel pipe. An expansion and contraction flexible joint for a propulsion method propulsion pipe,
An elastic ring member interposed between an outer pipe provided in an outer sleeve provided between propulsion main pipes and the outer sleeve, and the inner pipe surface at an open end of the elastic ring member And an elastic ring member that seals a gap between the inner pipe and the outer sleeve by providing a tongue piece that is bonded and sealed to the outer sleeve surface,
A double bolt type thrust receiving joint formed between the end face plate provided at the end of the inner pipe and the ring plate attached in the outer sleeve when the propulsion pipe is installed and removed after the propulsion pipe is installed. With material
With
The double bolt type thrust receiving member comprises: a threaded tube whose head abuts against an inner surface of the end plate and whose end is screwed into a nut disposed on the inner surface of the ring plate; An extension / contraction of a propulsion pipe for propulsion method, characterized in that it has a screwed shaft that is incorporated coaxially with a cylinder and whose both ends are between the outer surface of the end plate and the outer surface of the ring plate. Flexible joint.   4. The expansion / contraction flexible joint for a propulsion method propulsion pipe according to claim 3, wherein the main propulsion pipe is a synthetic steel pipe in which concrete is lined with a steel pipe.

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