JP2016166649A - Foundation penetrating sheath pipe and pipeline construction method - Google Patents

Abstract

CONSTITUTION: A foundation penetrating sheath pipe 10 comprises a sheath pipe body 30 and an upper opening reinforcement portion 42, and is used for the construction of a pipe penetrating through the foundation of a building. The sheath pipe body is formed into an elbow shape having an upper opening 30a and a side opening 30b. The upper opening reinforcement portion is formed in a dome shape so as to cover the upper opening, and is connected with the peripheral edge of the upper opening. The upper opening reinforcement portion is cut and removed prior to the construction of a pipe after the foundation penetrating sheath pipe is embedded in the foundation and fixed thereto.EFFECT: The upper opening reinforcement portion reinforces the opening portion of the sheath pipe body so as to prevent the foundation penetrating sheath pipe from being deformed as concrete placement. The upper opening reinforcement portion can also prevent raw concrete or dust and the like from getting into the foundation penetrating sheath pipe.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a foundation penetration sheath pipe and a pipe construction method, and more particularly, to a foundation penetration sheath pipe and a pipe construction method used for construction of piping penetrating a building foundation, for example.

  An example of a conventional base penetration sheath tube is disclosed in Patent Document 1. The basic penetration sheath tube of Patent Document 1 includes a longitudinal sheath tube portion and a transverse sheath tube portion that can accommodate a 90 ° elbow joint. And the cross-sectional shape of a longitudinal sheath pipe part is made into a horseshoe shape, and the width | variety of the downstream is made wider than the width | variety of an upstream. Such a foundation penetration sheath tube is embedded in the foundation of a building, thereby forming a through passage that allows the indoor side and the outdoor side of the foundation to communicate with each other. The piping is constructed so as to pass through the through-passage in the base-through sheath tube.

JP 2010-53599 A

  Concrete is cast around the foundation penetration sheath tube, but the foundation penetration sheath tube may be deformed by the pressure received from the ready-mixed concrete (fresh concrete pressure). In particular, as in the technique of Patent Document 1, when the longitudinal sheath tube portion of the basic penetration sheath tube has a horseshoe-shaped cross-sectional shape, the longitudinal sheath tube portion is easily deformed because it is weak against pressure from the side. Become. When the foundation penetration sheath pipe is embedded and fixed in a deformed state (that is, a state where the cross-sectional shape of the through passage is deformed), there is a possibility that the pipe cannot be inserted therein.

  Therefore, a main object of the present invention is to provide a novel base-through sheath tube and a pipe construction method.

  Another object of the present invention is to provide a sheath pipe for foundation penetration and a pipe construction method that can prevent deformation at the time of placing concrete.

  The first invention is a sheath tube for foundation penetration used for construction of piping that penetrates the foundation of a building, the sheath tube body having an upper opening and a lateral opening, and the upper opening so as to cover the upper opening. It is a sheath tube for base penetration provided with the upper opening reinforcement part which connects a periphery.

  In the first invention, the base-through sheath pipe is used for constructing a pipe such as a drain pipe penetrating the foundation of the building. A through passage that communicates with the outside is formed. The base penetration sheath tube includes a sheath tube body formed in an elbow shape having an upper opening and a lateral opening. Moreover, the upper opening reinforcement part which is formed in the dome shape etc. which cover an upper opening, and connects the periphery of an upper opening is integrally provided with respect to a sheath pipe main body. The upper opening reinforcing portion is cut and removed after the foundation penetrating sheath pipe is buried and fixed in the foundation of the building, and the upper opening reinforcing portion is cut and removed from the sheath pipe main body. The upper opening is opened.

  According to the first invention, since the upper opening reinforcing portion that connects the periphery of the upper opening of the sheath tube body is provided, the strength of the upper opening portion of the sheath tube body is improved. Therefore, it is possible to appropriately prevent the deformation of the foundation penetrating sheath pipe due to the ready-mixed concrete pressure at the time of placing the concrete.

  In addition, since the upper opening reinforcing portion is provided so as to cover the upper opening, it also functions as a cap for preventing ready-mixed concrete, dust, and the like from entering the base penetration sheath tube from the upper opening. Therefore, the work of sealing the upper opening using a cap, tape, or the like before placing the concrete can be omitted, and the construction work of the foundation penetrating sheath pipe is made efficient.

  A second invention is dependent on the first invention, and includes a holding member attaching portion that is provided in the upper opening reinforcing portion and to which a holding member for temporarily fixing the foundation penetration sheath tube is attached.

  In the second invention, the upper opening reinforcing portion includes a holding member attaching portion formed in a ring shape or the like. The holding member attaching portion is used for attaching a holding member such as a wire, a wire, a string and a thread for temporarily fixing the foundation penetration sheath tube.

  According to the second invention, since the holding member attaching portion is provided, the work of attaching the holding member to the base penetrating sheath tube and temporarily fixing the base penetrating sheath tube becomes easy. Further, since the holding member attaching portion is provided for the upper opening reinforcing portion that is exposed to the outside, the holding member can be removed without being buried in the concrete or damaging the concrete.

  3rd invention depends on 1st or 2nd invention, and the upper surface of an upper opening reinforcement part has a horizontal surface.

  According to the third aspect of the present invention, since it is possible to confirm that the foundation penetration sheath tube is not inclined and placed by placing a level with respect to the horizontal surface of the upper opening reinforcing portion or placing it, Leveling of the sheath tube is easy.

  A fourth invention is dependent on any one of the first to third inventions, and includes a lateral opening reinforcing portion for connecting a peripheral edge of the lateral opening so as to cover the lateral opening.

  In 4th invention, the horizontal opening reinforcement part which is formed in the dome shape etc. which cover a horizontal opening, and connects the periphery of a horizontal opening is integrally provided with respect to a sheath pipe main body. This lateral opening reinforcing portion is cut and removed after the foundation penetration sheath tube is buried and fixed in the foundation of the building. By cutting and removing the lateral opening reinforcing portion from the sheath tube body, The lateral opening is opened.

  According to the fourth aspect of the invention, since the lateral opening reinforcing portion that connects the periphery of the lateral opening of the sheath tube body is provided, the strength of the lateral opening portion of the sheath tube body is improved. In addition, since the lateral opening reinforcement part is provided so as to cover the lateral opening, it also functions as a cap, so the work of sealing the lateral opening with a cap, tape, etc. before placing concrete can be omitted, and the foundation penetration The construction work of the sheath tube is made more efficient.

  5th invention is a pipe construction method which constructs piping which penetrates the foundation of a building, Comprising: (a) The sheath pipe body which has an upper opening and a transverse opening, The upper opening so that the upper opening may be covered A step of preparing a basic through-sheathing tube comprising an upper opening reinforcing portion for connecting the peripheral edges, and (b) fitting the horizontal sheathing tube portion of the main body into the void hole of the rising foundation, A step of installing, (c) a step of placing soil concrete so that the upper opening reinforcing portion protrudes after installing the foundation penetrating sheath tube in step (b), and burying and fixing the foundation penetrating sheath tube; d) After burying and fixing the base penetration sheath tube in step (c), cutting the upper opening reinforcing portion from the sheath tube main body, and (e) cutting the upper opening reinforcing portion in step (d), Including the step of inserting and installing the pipe into the penetration sheath It is a pipeline construction method.

  In 5th invention, piping which penetrates the foundation of a building is constructed using the sheath pipe for base penetration. The pipeline construction method according to the fifth invention is basically applied to construction of a drain pipe or the like penetrating a cloth foundation. First, in step (a), a base penetration sheath tube is prepared. The basic through-hole sheath tube includes a sheath tube main body having an upper opening and a lateral opening, and is formed in a dome shape or the like covering the upper opening, and an upper opening reinforcing portion for connecting the peripheral edges of the upper opening includes Are provided integrally. In the next step (b), the base-penetrating sheath tube is installed by fitting the transverse sheath tube portion of the sheath tube body into the void hole formed in the rising foundation. At this time, the base penetration sheath tube is temporarily fixed using a holding member such as a hanging thread so that the base penetration sheath tube is not inclined and installed. In the following step (c), the soil-concrete is cast so that the upper opening reinforcing portion of the foundation penetrating sheath pipe protrudes, and the foundation penetrating sheath pipe is buried and fixed. In the subsequent step (d), the upper opening reinforcing portion is cut and removed from the sheath tube body of the basic penetration sheath tube. Thereby, the upper opening of the sheath tube main body is in an open state, and piping can be inserted from the upper opening. And in step (e), piping is inserted and installed in the sheath tube for base penetration.

  According to the fifth invention, similarly to the first invention, it is possible to appropriately prevent deformation of the foundation penetrating sheath pipe due to the ready-mixed concrete pressure when placing the concrete between the soils. In addition, the upper opening reinforcement that covers the upper opening also functions as a cap, so the work of sealing the upper opening with a cap, tape, etc. before placing concrete between the soil can be omitted, and the construction of the foundation-through sheath tube Work is streamlined.

  6th invention is the pipe construction method which constructs piping which penetrates the foundation of a building, Comprising: (a) The step which installs the foundation formwork in which the reinforcing bar is arranged inside, (b) Upper opening and side opening Providing a sheath tube for foundation penetration comprising a sheath tube body having a top and a top opening reinforcing portion for connecting a peripheral edge of the top opening so as to cover the top opening; (c) Foundation penetration through between the reinforcing bars Step of installing the sheath tube for the foundation, (d) After installing the sheath pipe for foundation penetration in step (c), the concrete foundation is placed so that the upper opening reinforcing portion protrudes, and the sheath pipe for foundation penetration is buried and fixed (E) After burying and fixing the base penetration sheath tube in step (d), cutting the upper opening reinforcing portion from the sheath tube main body, and (f) cutting the upper opening reinforcing portion in step (e). After that, install the pipe through the base penetration sheath. Comprising a pipe construction method.

  In 6th invention, piping which penetrates the foundation of a building is constructed using the sheath pipe for base penetration. The pipeline construction method according to the sixth aspect of the invention is basically applied to construction of a drain pipe that penetrates a solid foundation. First, in step (a), a basic formwork in which reinforcing bars are arranged is installed. In step (b), a base penetration sheath tube is prepared. The basic through-hole sheath tube includes a sheath tube main body having an upper opening and a lateral opening, and is formed in a dome shape or the like covering the upper opening, and an upper opening reinforcing portion for connecting the peripheral edges of the upper opening includes Are provided integrally. In the next step (c), a foundation through sheath tube is installed so as to pass between the reinforcing bars in the foundation mold. At this time, the base penetration sheath tube is temporarily fixed using a holding member such as a hanging thread so that the base penetration sheath tube is not inclined and installed. In the subsequent step (d), the concrete foundation is placed so that the upper opening reinforcing portion of the foundation penetrating sheath pipe protrudes, and the foundation penetrating sheath pipe is buried and fixed. In the subsequent step (e), the upper opening reinforcing portion is cut and removed from the sheath tube body of the basic penetration sheath tube. Thereby, the upper opening of the sheath tube main body is in an open state, and piping can be inserted from the upper opening. And in step (f), piping is inserted and installed in the base penetration sheath tube.

  According to the sixth invention, as in the first invention, it is possible to appropriately prevent the deformation of the foundation penetrating sheath tube due to the ready-mixed concrete pressure when the concrete foundation is placed. In addition, since the upper opening reinforcement that covers the upper opening also functions as a cap, the work of sealing the upper opening with a cap, tape, etc. before placing the concrete foundation can be omitted, and the construction of the foundation through-sheath tube Work is streamlined.

  According to the present invention, since the upper opening reinforcing portion for connecting the peripheral edge to the upper opening of the sheath tube body is provided, the strength of the upper opening portion of the sheath tube body is improved. Therefore, the deformation of the sheath tube due to the ready-mixed concrete pressure at the time of placing the concrete can be appropriately prevented. In addition, since the upper opening reinforcing portion is provided so as to cover the upper opening, it also functions as a cap for preventing ready-mixed concrete, dust and the like from entering the sheath pipe from the upper opening. Therefore, the work of sealing the upper opening using a cap, tape or the like before placing the concrete can be omitted, and the construction work of the sheath tube is made efficient.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

It is an illustration figure which shows a mode when constructing the sheath pipe for foundation penetration of one Example of this invention on the cloth foundation of a building. It is an illustration figure which shows an example of the inner pipe penetrated in the sheath pipe for basic penetration of FIG. 1, (A) is a perspective view, (B) is sectional drawing. FIG. 2 is an illustrative view showing the basic through-shell sheath tube of FIG. 1, wherein (A) is a perspective view and (B) is a cross-sectional view. It is an illustration figure which shows the sheath tube for basic penetration of FIG. 1, Comprising: (A) is a front view, (B) is a top view, (C) is a side view which shows a side opening side. It is an illustration figure which shows an example of the construction method which constructs the sheath pipe for foundation penetration of FIG. 1 on a cloth foundation, (A) shows a mode that the sheath pipe for foundation penetration was temporarily fixed to the rising foundation of a cloth foundation, (B ) Shows the situation when soil concrete is placed and the sheath pipe for foundation penetration is buried and fixed. (C) shows the upper opening reinforcement and the lateral opening reinforcement of the foundation penetration sheath pipe buried and fixed. Show the state. It is an illustration figure which shows a mode that the state of FIG. 5 (A) was seen from upper direction. It is an illustration figure which shows an example of the construction method which constructs the drain pipe which passes through the inside of the foundation penetration sheath pipe of FIG. 1, (A) shows a mode when inserting an inner pipe in the sheath pipe for foundation penetration, (B) Shows a state in which the end of the horizontal pipe portion of the inner pipe protrudes outdoors, and (C) shows a state in which an outdoor side pipe is connected to the horizontal pipe portion of the inner pipe. It is an illustration figure which shows a mode that the drainage pipe which penetrates the fabric foundation of a building was constructed | assembled using the sheath pipe for foundation penetration of FIG. It is a perspective view which shows the foundation penetration sheath tube of the other Example of this invention. It is an illustration figure which shows a mode when constructing the foundation penetration sheath pipe of FIG. 9 on the cloth foundation of a building. It is a perspective view which shows the sheath tube for foundation penetration of other Example of this invention. It is an illustration figure which shows an example of the construction method which constructs the foundation penetration sheath pipe of FIG. 11 on the solid foundation of a building, (A) shows a mode that the foundation penetration sheath pipe was temporarily fixed so that it might pass between reinforcing bars, (B) shows the situation when the foundation concrete is placed and the sheath pipe for foundation penetration is buried and fixed, (C) shows the situation where the upper opening reinforcing part of the foundation penetration sheath pipe is buried and fixed is cut and removed. . It is sectional drawing which shows the sheath pipe for foundation penetration of other Example of this invention. It is an illustration figure which shows a mode when constructing the sheath pipe for foundation penetration of FIG. 13 on the solid foundation of a building.

  Referring to FIG. 1, a foundation penetrating sheath pipe (hereinafter simply referred to as “sheath pipe”) 10 according to an embodiment of the present invention is used for constructing a drain pipe penetrating the foundation of a building. By being embedded and fixed in the foundation, a through passage that connects the indoor side and the outdoor side of the foundation is formed. And the drain pipe which penetrates a foundation is constructed by connecting the indoor side piping 14 and the outdoor side piping 16 with the inner pipe 12 inserted in this sheath pipe 10 (refer FIG. 8).

  As shown in FIG. 1, in this embodiment, an example in which a sheath tube 10 is applied to a fabric foundation 100 is shown. The fabric foundation 100 includes a rising portion (rising foundation) 102 and a footing 104 provided at the lower end thereof, and has an inverted T-shaped cross-sectional shape. In addition, a void hole 106 is formed in advance in the rising portion 102 when the fabric foundation 100 is placed. The void hole 106 is a through-hole having a circular cross section having an inner diameter slightly larger than the outer diameter of the transverse sheath tube portion 32 of the sheath tube 10.

  In addition, although the thickness of the rising part 102 of the fabric foundation 100 is generally set to 150-170 mm, in this Example, 195 mm which falls into the thickest category is assumed. Moreover, the drainage pipe to construct assumes the synthetic resin pipe | tube with an internal diameter of 100 mm. The dimension of each part of the sheath tube 10 and the inner tube 12 described later is a dimension set in accordance with these.

  First, an example of the inner tube 12 installed in the sheath tube 10 will be described. The inner pipe 12 is a joint that is inserted into the sheath pipe 10 (through passage) to connect the indoor side pipe 14 and the outdoor side pipe 16 and constitutes a part of the drain pipe (see FIG. 8).

  As shown in FIG. 2, the inner tube 12 is a hard tube that does not have flexibility, and is formed of a synthetic resin such as hard vinyl chloride. The inner pipe 12 includes an elbow part 20 and a horizontal pipe part 22 provided on the downstream side thereof, and is formed in a substantially L shape that is long in the horizontal direction. In this embodiment, the inner tube 12 is formed by adhesively bonding a general-purpose straight pipe (plain tube) to the downstream-side receiving port of a general-purpose 90 ° elbow having receiving ports at both ends. That is, a receiving port 24 connected to the indoor side pipe 14 is formed upward at the upstream end of the inner pipe 12, and the difference between being connected to the outdoor side pipe 16 at the downstream end of the inner pipe 12. The mouth 26 is formed sideways.

  The axial length L1 of the horizontal tube portion 22 is set to be larger than the thickness of the rising portion 102 of the fabric foundation 100, and the inner tube 12 is connected to the fabric foundation within the sheath tube 10 when the drainage pipe is constructed as will be described later. When it approaches to the rising part 102 side of 100, it is set as the length which the front-end | tip part (differential opening 26) of the horizontal pipe part 22 protrudes outside from the rising part 102 (refer FIG.7 (B)). An axial length L1 of the horizontal tube portion 22 is, for example, 300 mm.

  Further, the overall length L2 of the inner tube 12 in the axial direction of the horizontal tube portion 22 is, for example, 424 mm. Further, the outer diameter of the elbow portion 20, that is, the maximum width of the inner tube 12 in the direction orthogonal to the axial direction of the horizontal tube portion 22 is, for example, 125 mm.

  Then, the structure of the sheath tube 10 is demonstrated concretely. As shown in FIGS. 3 and 4, the sheath tube 10 is formed of a synthetic resin such as hard vinyl chloride, polyethylene, and polypropylene, and is manufactured using blow molding or the like. The sheath tube 10 includes a sheath tube body 30 having an upper opening 30a and a lateral opening 30b. The sheath tube main body 30 includes a transverse sheath tube portion 32, a curved portion 34, and a longitudinal sheath tube portion 36, and is formed in a 90 ° elbow shape as a whole.

  The transverse sheath tube portion 32 is formed in a short straight tube having a circular cross section extending in the transverse direction, and a transverse opening 30b is formed at the downstream end thereof. The inner diameter of the transverse sheath tube portion 32 is, for example, 119 mm. The bending portion 34 is provided on the upstream side of the transverse sheath tube portion 32 and is formed in a cylindrical shape that curves upward continuously from the upstream end portion of the transverse sheath tube portion 32. The longitudinal sheath pipe portion 36 is provided on the upstream side of the bending portion 34 and is formed in a short straight tube extending in the vertical direction. An upper opening 30 a that opens upward is formed at the upstream end of the vertical sheath pipe portion 36.

  In addition, the longitudinal sheath tube portion 36 includes a semi-cylindrical sidewall disposed to face in the axial direction of the transverse sheath tube portion 32, and a flat plate shaped sidewall disposed to face in a direction orthogonal to the axial direction of the transverse sheath tube portion 32. The cross-sectional shape is an oval shape (rounded rectangular shape). That is, the upper opening 30a opens in an oval shape. In this embodiment, the size (opening area) of the upper opening 30a is such that the inner tube 12 (see FIG. 2) having the long horizontal tube portion 22 can be inserted and removed without being divided. Is set. As a result, as will be described later, when constructing the drain pipe, it becomes possible to perform all the drain pipe connecting work and cutting work outside the sheath pipe 10 (through passage). Easy and appropriate execution. In addition, when the drain pipe is renewed, all the drain pipe cutting operations can be performed outside the sheath pipe 10, and the drain pipe remaining in the sheath pipe 10 can be easily extracted from the upper opening 30a. it can.

  However, considering the member cost and the appearance of the soil concrete 116 described later, the size of the upper opening 30a is preferably as small as possible. Therefore, in this embodiment, the diameter R1 of the upper opening 30a in the axial direction of the transverse sheath tube portion 32 (inner diameter of the longitudinal sheath tube portion 36) R1 is set when the inner tube 12 is inserted into the sheath tube 10. When the distal end of the lateral tube portion 22 reaches the proximal end portion 38 of the lateral sheath tube portion 32, the rear end side portion 28 of the elbow portion 20 of the inner tube 12 does not reach the periphery of the upper opening 30a. The size is set (see FIG. 7A). Thereby, the size of the upper opening 30a is suppressed. Further, when the inner tube 12 is disposed in the sheath tube 10, the inner tube 12 can move along the axial direction of the transverse sheath tube portion 32. That is, there is a piping movable range of the drain pipe. The diameter R1 of the upper opening 30a is, for example, 355 mm.

  In addition, the diameter R2 of the upper opening 30a in the direction orthogonal to the axial direction of the lateral sheath tube portion 32 is set to be the same as or substantially the same as the outer diameter of the elbow portion 20 of the inner tube 12. Thereby, the size of the upper opening 30a is suppressed. Further, when the inner tube 12 is inserted into the sheath tube 10, the inner tube 12 is supported by the flat side wall of the longitudinal sheath tube portion 36 and rotates around the axial direction of the transverse sheath tube portion 32. It is prevented from falling to the side. The diameter R2 of the upper opening 30a is, for example, 125 mm.

  In addition, the proximal end portion 38 of the transverse sheath tube portion 32, that is, the transition portion from the transverse sheath tube portion 32 to the curved portion 34 is enlarged in a stepped shape so that the cross-sectional shape thereof becomes a horseshoe shape. That is, the base end portion 38 of the transverse sheath tube portion 32 has a semi-cylindrical upper half portion and a half-square tubular lower half portion, and protrudes like a bowl on the outer peripheral surface of the transverse sheath tube portion 32. A step surface 38a is formed. As will be described later, when the sheath tube 10 is installed by fitting the transverse sheath tube portion 32 into the void hole 106, the peripheral edge of the void hole 106 and the step surface 38a abut, thereby positioning the sheath tube 10. The

  Further, a rectangular flat plate portion 40 is formed on the upstream side bottom portion of the curved portion 34. When installing the sheath tube 10, the flat plate portion 40 and the bottom surface of the base end portion 38 of the transverse sheath tube portion 32 are placed on the soil surface directly or via the moisture-proof sheet 114, thereby allowing the sheath tube 10. Is stabilized, and the lateral fall of the sheath tube 10 is prevented.

  In this embodiment, the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 are integrally provided at both ends of the sheath tube main body 30. That is, the sheath tube main body 30, the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 are integrally formed.

  The upper opening reinforcing portion 42 is formed in a dome shape so as to cover the upper opening 30a, and connects the periphery of the upper opening 30a (that is, the upstream end portion of the vertical sheath tube portion 36). By providing such an upper opening reinforcing portion 42, the strength of the upper opening 30a portion of the sheath tube main body 30, particularly the strength against pressure from the side, is improved. Further, the upper opening reinforcing portion 42 has a horizontal surface 42a on the upper surface thereof. The horizontal surface 42a is used to apply or place a level when the sheath tube 10 is installed.

  The lateral opening reinforcing portion 44 is formed in a dome shape so as to cover the lateral opening 30b, and connects the peripheral edge of the lateral opening 30b (that is, the downstream end of the lateral sheath tube portion 32). By providing such a lateral opening reinforcing portion 44, the strength of the lateral opening 30b portion of the sheath tube main body 30 is improved.

  Further, the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 are provided with a ring-shaped holding member mounting portion 46. The holding member attaching portion 46 is used for attaching a holding member 110 (see FIG. 5) such as a wire, a wire, a string, and a thread used for temporarily fixing the sheath tube 10 when the sheath tube 10 is installed. It is done. In this embodiment, the upper opening reinforcing portion 42 is provided with holding member attaching portions 46 on the side of the transverse sheath tube portion 32 in the protruding direction and on the opposite side. Further, the horizontal opening reinforcing portion 44 is provided with a holding member attaching portion 46 at the upper portion thereof so as not to protrude outward from the outer peripheral surface of the horizontal sheath tube portion 32. However, the shape, the number, the arrangement position, and the like of the holding member attaching portion 46 can be changed as appropriate.

  The upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 as described above are cut and removed after placing the concrete and burying and fixing the sheath tube 10 (in this embodiment, after placing the soil concrete 116). It is. By cutting and removing the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44, the upper opening 30a and the horizontal opening 30b of the sheath tube main body 30 are opened, and the through-passage that allows the indoor side and the outdoor side of the fabric foundation 100 to communicate with each other. Is formed. Since the upper opening reinforcing portion 42 and the horizontal opening reinforcing portion 44 are cut and removed, the longitudinal lengths of the longitudinal sheath pipe portion 36 and the horizontal sheath pipe portion 32 are determined so that the upper opening reinforcing portion 42 is on the indoor side. The size is set such that the sheath tube 10 can be embedded and fixed in a protruding state and in a state where the lateral opening reinforcing portion 44 protrudes to the outdoor side.

  Moreover, the display part 48 which displays the upper limit position which can place concrete by an unevenness | corrugation, printing, etc. is provided in the outer surface of the upper end part of the vertical sheath pipe part 36. As shown in FIG. By placing concrete using the display portion 48 as a guide, the upper opening reinforcing portion 42 is prevented from being embedded in the concrete. However, the display unit 48 may indicate a height range in which concrete can be placed or a recommended height range.

  Then, with reference to FIGS. 5-8, an example of the pipe line construction method which constructs the drain pipe which penetrates the cloth foundation 100 of a building using the sheath pipe 10 is demonstrated.

  In this pipeline construction method, first, as shown in FIGS. 5 and 6, the fabric foundation 100 is driven and the sheath tube 10 is embedded and fixed at a predetermined position.

  Specifically, first, a foundation mold for placing the fabric foundation 100 is formed, and reinforcing bars are arranged in the foundation mold. In addition, a cylindrical void pipe is disposed at the piping position of the drain pipe so as to penetrate the lower portion of the rising portion 102 in the thickness direction. Then, the ready-mixed concrete is poured into the basic formwork, and after curing for a predetermined time to solidify the concrete, the basic formwork and the void pipe are removed. As a result, the fabric foundation 100 having the void hole 106 in the rising portion 102 is driven. However, the void tube may be buried in the rising portion 102. In addition, a space for installing the sheath tube 10 is provided on the indoor side of the void hole 106, and a moisture-proof sheet 114 is installed on the soil 112 on the indoor side. The moisture-proof sheet 114 can be cut out at a portion where the sheath tube 10 is placed. The fabric foundation 100 may be formed by prefabrication (prefabrication).

  Next, as shown in FIG. 5A, the sheath tube 10 is installed by fitting the transverse sheath tube portion 32 of the sheath tube 10 into the void hole 106. At this time, the bottom portion of the sheath tube main body 30 is placed on the soil surface directly or via the moisture-proof sheet 114, and the peripheral edge of the void hole 106 and the step surface 38a of the transverse sheath tube portion 32 of the sheath tube 10 are formed. The transverse sheath tube portion 32 is fitted into the void hole 106 until it abuts. In this state, as can be seen from FIG. 6, the sheath tube 10 is temporarily fixed using a holding member 110 such as a hanging thread.

  The method of temporarily fixing the sheath tube 10 using the holding member 110 is not particularly limited. For example, the holding member is connected so that the holding member attaching portions 46 provided in the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 are connected. 110 is attached, and the sheath tube 10 may be temporarily fixed so as to be lifted by the holding member 110. In this case, the holding member 110 may be in a state of being spread laterally through an anchor bolt 108 or the like provided so as to protrude from the upper surface of the rising portion 102 of the fabric foundation 100. However, it is not always necessary to attach the holding member 110 via the anchor bolt 108 or the like. Although not shown, a holding member fixture is separately installed on the upper surface of the rising portion 102 and the like, for example, provided on the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 of the holding member fixture and the sheath tube 10. The sheath tube 10 can be temporarily fixed by connecting the holding member attaching portion 46 to the holding member 110. Further, a floor band or the like having an elevating part is used as the holding member attaching tool. For example, the holding member attaching part 46 provided on the upper opening reinforcing part 42 and the holding member attaching provided on the lateral opening reinforcing part 44 via the elevating part. The portion 46 may be connected to the holding member 110, and the holding member 110 may be lifted up using a lifting / lowering portion after the connection. Thus, the sheath tube 10 can be temporarily fixed more reliably without causing individual differences due to the operator's technique.

  Furthermore, although illustration is abbreviate | omitted, a leveling device is applied or mounted with respect to the horizontal surface 42a of the upper opening reinforcement part 42, and it is confirmed that the sheath pipe | tube 10 is not inclined and installed.

  In this state, the sheath tube 10 is temporarily fixed using the holding member 110 in a state in which the transverse sheath tube portion 32 is fitted into the void hole 106, whereby the sheath tube 10 is stably temporarily fixed. Further, the sheath tube 10 is easily positioned by the contact between the peripheral edge of the void hole 106 and the stepped surface 38a. Further, the bottom surface of the base end portion 38 of the horizontal sheath tube portion 32 formed in a flat plate shape and the flat plate portion 40 are placed on the soil surface, so that the sheath tube 10 around the axial direction of the horizontal sheath tube portion 32 is provided. The rotation is prevented, and the sheath tube 10 is temporarily fixed more stably.

  When the sheath tube 10 is temporarily fixed, as shown in FIG. 5 (B), after the space around the sheath tube 10 is backfilled with soil or as it is, the longitudinal sheath tube portion 36 of the sheath tube 10 is left as it is. The earthen concrete 116 is laid so as to cover the periphery of the shell, and the sheath tube 10 is buried and fixed. When placing the interstitial concrete 116, the upper limit position displayed on the display unit 48 is not exceeded, and the entire upper opening reinforcing portion 42 protrudes from the upper surface of the interstitial concrete 116.

  Here, in this embodiment, the upper opening reinforcing portion 42 is provided so as to connect the peripheral edge of the upper opening 30a, so that the upper opening 30a portion of the sheath tube main body 30 is reinforced. The deformation of the longitudinal sheath pipe portion 36 (and hence the sheath pipe 10) due to the fresh concrete pressure is appropriately prevented. Moreover, since the upper opening reinforcement part 42 is provided so that the upper opening 30a may be covered, it also functions as a cap that prevents ready-mixed concrete, dust, and the like from entering the sheath tube 10 from the upper opening 30a. Therefore, the work of sealing the upper opening 30a using a cap, tape, or the like before placing the soil concrete 116 can be omitted. Similarly, since the lateral opening reinforcing portion 44 is provided so as to cover the lateral opening 30b, it also functions as a cap, and the work of sealing the lateral opening 30b using a cap, tape, or the like can be omitted. Further, since the upper opening reinforcing portion 42 is formed in a dome shape, even if the ready-mixed concrete gets on the peripheral portion of the upper opening reinforcing portion 42, the ready-made concrete slides down naturally.

  When the soil concrete 116 is cured and the sheath tube 10 is buried and fixed, the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 are subsequently cut and removed from the sheath tube main body 30 as shown in FIG. To do.

  Specifically, first, the holding member 110 used for temporarily fixing the sheath tube 10 is removed. At this time, since the holding member mounting portion 46 is provided for the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 that are exposed to the outside (that is, the portion that is not embedded), The holding member 110 can be removed without damaging the concrete 116.

  Then, by using a cutting tool such as a disk grinder (sander), the upper opening reinforcing portion 42 is cut and removed by cutting the upstream end of the longitudinal sheath pipe portion 36 at a position near the upper surface of the soil concrete 116. By this cutting operation, the upper opening 30a is opened, and at the same time, the length (height) adjustment of the longitudinal sheath pipe portion 36 is completed. Similarly, the lateral opening reinforcing portion 44 is cut and removed by cutting the downstream end portion of the horizontal sheath tube portion 32 at a position near the side surface on the outdoor side of the rising portion 102 using a cutting tool. By this cutting operation, the lateral opening 30b is opened, and at the same time, the length adjustment of the lateral sheath tube portion 32 is completed.

  Through the above operation, a through passage (pipe passage) that connects the indoor side and the outdoor side of the fabric foundation 100 is formed by the sheath tube body 30 of the sheath tube 10.

  When the burying and fixing operation of the sheath tube 10 is completed, the drain tube is inserted and installed in the sheath tube 10 as shown in FIG.

  Specifically, first, as shown in FIG. 7 (A), the pipe member of the indoor side pipe 14 is bonded and bonded to the receiving port 24 of the inner pipe 12 outside the sheath pipe 10, and then the upper opening is opened. The inner tube 12 is inserted into the sheath tube 10 from 30a in an oblique direction. When the distal end of the horizontal tube portion 22 of the inner tube 12 reaches the proximal end portion 38 of the lateral sheath tube portion 32, the inner tube 12 is turned into the sheath tube 10 with the distal end of the lateral tube portion 22 as a fulcrum.

  Subsequently, as shown in FIG. 7 (B), the inner tube 12 is brought closer to the rising portion 102 side of the fabric foundation 100, and the downstream end portion (slot 26) of the lateral tube portion 22 of the inner tube 12 is placed outdoors. Make it protrude. Then, as shown in FIG. 7C, the pipe member of the outdoor side pipe 16 is bonded and bonded to the outlet 26 of the horizontal pipe portion 22 using the socket 18 or the like outside the sheath pipe 10.

  Next, as shown in FIG. 8, the inner pipe 12 is moved together with the pipe member of the connected outdoor side pipe 16 in accordance with the pipe position of the desired indoor side pipe 14, and the transverse sheath pipe portion 32 in the axial direction is moved. The arrangement position of the inner tube 12 is adjusted. Thereafter, caulking 118 such as silicon sealant is applied to the outdoor opening edge of the void hole 106 to close the gap between the outer peripheral surface of the outdoor side pipe 16 and the inner peripheral surface of the void hole 106. In addition, although illustration is abbreviate | omitted, it is good for the sheath tube 10 to provide the lid | cover which seals the upper opening 30a suitably. Further, the gap between the inner tube 12 and the sheath tube 10 may be filled with a sponge or the like.

  Finally, the construction of the drain pipe penetrating the rising portion 102 of the fabric foundation 100 is completed by backfilling the periphery of the outdoor side pipe 16 with soil or the like. Thus, when constructing the drain pipe, all the drain pipe connection work and cutting work can be performed outside the sheath pipe 10, and the drain pipe connection work can be easily and appropriately executed.

  In addition, although illustration is abbreviate | omitted, the method to update the drainage pipe constructed using the above sheath pipes 10 is demonstrated easily. When the drain pipe needs to be renewed for reasons such as aging, first, the indoor pipe 14 of the drain pipe is cut outside the sheath pipe 10. Next, the drain pipe in the sheath pipe 10 is brought close to the rising portion 102 side of the fabric foundation 100, and the drain pipe projecting outside from the rising portion 102 is cut in the vicinity of the side surface on the outdoor side of the rising portion 102. Subsequently, the drain pipe remaining in the sheath pipe 10 is directly extracted from the upper opening 30a. Thereafter, in a manner similar to the method shown in FIGS. 7 and 8, a new drainage pipe is inserted and installed in the sheath pipe 10 to complete the update of the drainage pipe. As described above, when the drainage pipe is updated, all the drainage pipe cutting operations can be performed outside the sheath pipe 10, and the drainage pipe remaining in the sheath pipe 10 can be easily extracted from the upper opening 30a. be able to.

  As described above, according to this embodiment, since the upper opening reinforcing portion 42 that connects the peripheral edge to the upper opening 30a of the sheath tube main body 30 is provided, the strength of the upper opening 30a portion of the sheath tube main body 30 is increased. Be improved. Therefore, the deformation of the sheath tube 10 due to the ready-mixed concrete pressure when placing the soil concrete 116 can be appropriately prevented. In addition, since the upper opening reinforcing portion 42 is provided so as to cover the upper opening 30a, it also functions as a cap that prevents ready-mixed concrete, dust, and the like from entering the sheath tube 10 from the upper opening 30a. Therefore, the work of sealing the upper opening 30a using a cap, tape or the like before placing the soil concrete 116 can be omitted, and the construction work of the sheath tube 10 is made efficient.

  Moreover, since the horizontal opening reinforcement part 44 which connects the periphery with respect to the horizontal opening 30b of the sheath pipe main body 30 was provided, the intensity | strength of the horizontal opening 30b part of the sheath pipe main body 30 is improved. Since the lateral opening reinforcing portion 44 also serves as a cap by being provided so as to cover the lateral opening 30b, the work of sealing the lateral opening 30b using a cap, tape or the like before placing the soil concrete 116 is omitted. it can.

  Furthermore, since the holding member attaching part 46 is provided, the operation | work which attaches the holding member 110 to the sheath tube 10 and temporarily fixes the sheath tube 10 becomes easy. Further, since the holding member attaching portion 46 is provided for the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 exposed to the outside, the holding member is not buried in the interstitial concrete 116 or is not damaged. 110 can be removed.

  Furthermore, since the upper opening reinforcing portion 42 has the horizontal surface 42a, it is easy to level the sheath tube 10 using a level device.

  In the above-described embodiment, the upper opening 30a and the lateral opening 30b are entirely covered by the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44. However, the present invention is not limited to this. The upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 are not necessarily required to completely seal (seal) the upper opening 30a and the horizontal opening 30b, and a part thereof may be cut away. For example, a small-diameter hole that does not impair the reinforcing function and cap function of the upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 may be formed.

  Moreover, in the above-mentioned Example, although the upper opening reinforcement part 42 and the horizontal opening reinforcement part 44 were formed in the dome shape, it is not limited to this. The upper opening reinforcing portion 42 and the lateral opening reinforcing portion 44 may be formed in a flat plate shape, for example.

  Furthermore, in the above-described embodiment, the lateral opening reinforcing portion 44 is provided in the lateral opening 30b of the sheath tube main body 30, but the lateral opening reinforcing portion 44 is not necessarily provided. Further, the transverse sheath tube portion 32 of the sheath tube main body 30 does not necessarily have to have a length over the entire length of the void hole 106.

  For example, as shown in FIG. 9, in the sheath tube 10 according to another embodiment of the present invention, the lateral opening 30 b of the sheath tube body 30 is previously opened, and the length of the transverse sheath tube portion 32 of the sheath tube body 30 is set. Is set short. The length from the step surface 38a to the tip of the transverse sheath tube portion 32 is, for example, 30 mm. Other parts are the same as those of the sheath tube 10 shown in FIG.

  When embedding and fixing the sheath tube 10 shown in FIG. 9, as shown in FIG. 10, the transverse sheath tube portion 32 of the sheath tube 10 is fitted into the void hole 106, and the peripheral edge of the void hole 106 and the transverse sheath of the sheath tube 10 are fitted. The step surface 38a of the pipe portion 32 is brought into contact with the stepped portion 38a. In this state, the sheath tube 10 is temporarily fixed using a holding member 110 such as a hanging thread. For example, the holding member 110 may be attached so that the holding member attaching portion 46 provided in the upper opening reinforcing portion 42 is connected to the anchor bolt 108 of the rising portion 102 and the sheath tube 10 is temporarily fixed.

  After temporarily fixing the sheath tube 10, the soil concrete 116 is cast so as to cover the periphery of the longitudinal sheath tube portion 36 of the sheath tube 10, and the sheath tube 10 is embedded and fixed. At this time, the stepped surface 38 a is brought into contact with the entire circumferential length of the edge of the void hole 106, so that the soil for backfilling or ready-mixed concrete can be Intrusion (outflow) into the gap between the surfaces is prevented.

  After the sheath tube 10 is buried and fixed, the holding member 110 used for temporarily fixing the sheath tube 10 is removed, and the upstream end of the longitudinal sheath tube portion 36 is cut at a position near the upper surface of the soil concrete 116 to The opening reinforcing portion 42 is cut and removed. Thereby, since the penetration path which connects the indoor side and the outdoor side of the fabric foundation 100 is formed by the void hole 106 and the sheath tube main body 30, a drain pipe is installed using this penetration path.

  Also in the embodiment shown in FIG. 9, as in the embodiment shown in FIG. 1, the upper opening reinforcing portion 42 that connects the peripheral edge to the upper opening 30 a of the sheath tube main body 30 is provided. The deformation of the sheath tube 10 due to the ready-mixed concrete pressure can be appropriately prevented. In addition, since the upper opening reinforcing portion 42 also functions as a cap, the work of sealing the upper opening 30a using a cap, tape, or the like before placing the soil concrete 116 can be omitted.

  In the above-described embodiment, the void hole 106 having a circular cross section is formed in the rising portion 102 of the fabric foundation 100, but the cross sectional shape of the void hole 106 is not particularly limited. The void hole 106 may be, for example, a through-hole having a rectangular cross section or a horseshoe-shaped (arched) cross section.

  Moreover, although the example which applied the sheath tube 10 with respect to the fabric foundation 100 was shown in the above-mentioned Example, the sheath tube 10 can also be applied with respect to the solid foundation 128. FIG. In FIG. 11, an example of the sheath tube 10 used for the solid foundation 128 is shown.

  As shown in FIG. 11, in the sheath tube 10 of still another embodiment of the present invention, the lateral opening 30b of the sheath tube main body 30 is opened in advance, and the axial length of the lateral sheath tube portion 32 is solid. The thickness is about the same as the thickness of the rising portion of the foundation 128. Other parts are the same as those of the sheath tube 10 shown in FIG.

  A method of constructing a drain pipe that penetrates the solid foundation 128 using the sheath pipe 10 shown in FIG. 11 will be described with reference to FIG.

  First, as shown in FIG. 12 (A), a foundation mold 120 for placing a solid foundation 128 is formed. In this basic formwork 120, reinforcing bars 122 are appropriately arranged (reinforcement). And the sheath pipe 10 is installed so that it may pass between the reinforcing bars 122 with respect to the piping position of a drain pipe. In this case, for example, the holding member 110 is attached so as to connect the holding member attaching portion 46 provided in the upper opening reinforcing portion 42 and the protruding portion 124 of the basic mold 120 or the curved portion of the sheath tube main body 30. The holding member 110 is attached so that the holding member attaching part 46 provided in 34 outer surface and the reinforcing bar 122 may be connected, and the sheath tube 10 is temporarily fixed. Further, the lateral opening 30b of the sheath tube main body 30 is sealed with a sealing member 126 such as a cap or a tape in order to prevent the entry of ready-mixed concrete or dust into the sheath tube main body 30.

  After the installation of the sheath tube 10, a concrete foundation is placed in the foundation mold 120 as shown in FIG. When placing the concrete foundation, the upper limit position displayed on the display portion 48 is not exceeded, and the entire upper opening reinforcing portion 42 protrudes from the upper surface of the solid foundation 128.

  When the concrete is solidified and the sheath tube 10 is buried and fixed, as shown in FIG. 12C, the holding member mounting portion 46 provided in the upper opening reinforcing portion 42 and the protruding portion 124 of the foundation mold 120 are connected. While removing the held holding member 110, the foundation mold 120 is removed. Further, the upper opening reinforcing portion 42 is cut and removed by cutting the upstream end portion of the longitudinal sheath tube portion 36 at a position near the upper surface of the solid foundation 128, and the sealing attached to the lateral opening 30b of the sheath tube main body 30. The member 126 is removed. Thereby, since the through-hole which connects the indoor side and the outdoor side of the solid foundation 128 is formed by the sheath tube main body 30, a drain pipe is installed using this through-passage.

  Also in the embodiment shown in FIG. 11, as in the embodiment shown in FIG. 1, the upper opening reinforcing portion 42 that connects the peripheral edge to the upper opening 30 a of the sheath tube main body 30 is provided. The deformation of the sheath tube 10 due to the ready-mixed concrete pressure can be appropriately prevented. Further, since the upper opening reinforcing portion 42 also functions as a cap, the work of sealing the upper opening 30a using a sealing member such as a cap or a tape before placing the solid foundation 128 can be omitted.

  In the above-described embodiment, the inner tube 12 is formed by adhesively bonding a straight tube to a 90 ° elbow. However, the present invention is not limited to this. For example, the inner pipe 12 may be integrally formed in advance instead of connecting members, or may be formed by joining a straight pipe to a 90 ° elbow with a rubber ring. However, from the viewpoint of reducing the cost by reducing the number of dedicated parts and from the viewpoint of water-stopping, it is preferable to form the inner tube 12 by bonding and bonding general-purpose members.

  Moreover, in the above-mentioned Example, although the inner pipe 12 in which the elbow part 20 and the horizontal pipe part 22 were integrated previously was inserted in the sheath pipe 10, it is not limited to this. For example, the elbow part 20 (90 ° elbow) and the horizontal pipe part 22 (straight pipe) may be joined in the sheathed and fixed tube 10.

  Further, the shape of the inner tube 12 is not particularly limited. For example, the inner tube 12 may be one in which the elbow portion 20 is not bent at an angle of 90 ° but is bent at an angle of 45 ° or 60 °, for example. Further, the inner tube 12 may be a flexible tube.

  Furthermore, although the vertical pipe is connected as the indoor side pipe 14 to the inner pipe 12 in the above-described embodiment, the present invention is not limited to this. For example, a curved pipe may be connected to the inner pipe 12, and a ridge such as a merging rod or a swivel rod may be connected directly or via a connecting pipe.

  Furthermore, in the above-described embodiment, the drain pipe is exemplified as the pipe inserted into the sheath pipe 10, but the pipe inserted into the sheath pipe 10 may be a water supply pipe or a gas pipe.

  In the above-described embodiment, the curved portion 34 of the sheath tube 10 is curved relatively gently upward, but the curved portion 34 rises from the base end portion 38 of the transverse sheath tube portion 32 in a substantially vertical direction. It may be curved. As a result, the longitudinal sheath pipe portion 36 can be arranged close to the lateral sheath pipe portion 32 side, that is, in the vicinity of the rising portion 102, so that the indoor side pipe 14 is arranged along the wall surface on the indoor side of the rising portion 102. It becomes easy to pipe.

  Furthermore, in the above-described embodiment, the upper opening 30a of the sheath tube 10 is opened in an oval shape (rounded rectangular shape). However, the upper opening 30a may be opened in a horseshoe shape, an elliptical shape, and a circular shape. Further, the upper opening 30a (vertical sheath tube portion 36) of the sheath tube body 30 does not necessarily have a size that can be inserted and removed without dividing the inner tube 12. That is, the sheath tube main body 30 only needs to have an inner diameter that allows at least the inner tube 12 to be inserted in accordance with the type of the inner tube 12 (integral type, split type, flexible type, etc.).

  Furthermore, in the above-described embodiment, the longitudinal sheath tube portion 36 of the sheath tube 10 is formed so as to extend in a substantially vertical direction, but the longitudinal sheath tube portion 36 may be formed so as to extend in an oblique direction.

  For example, as shown in FIG. 13, the sheath tube 10 of still another embodiment of the present invention includes a sheath tube body 30 having an upper opening 30a and a lateral opening 30b. The sheath tube main body 30 includes a transverse sheath tube portion 32 extending in the lateral direction, a curved portion 34 and a longitudinal sheath tube portion 36 extending in an oblique direction, and is formed in a 45 ° elbow shape as a whole. The sheath tube main body 30 has a circular cross section over substantially the entire length thereof.

  Further, the sheath tube main body 30 is integrally formed with a top opening reinforcing portion 42 that is formed in a dome shape so as to cover the top opening 30a and that connects the peripheral edges of the top opening 30a. On the other hand, the lateral opening 30b of the sheath tube body 30 is previously opened. The upper opening reinforcing portion 42 is provided with a ring-shaped holding member mounting portion 46.

  The sheath tube 10 as shown in FIG. 13 is applicable to both the fabric foundation 100 and the solid foundation 128. For example, as shown in FIG. 14, when constructing a drain pipe penetrating the solid foundation 128 using the sheath pipe 10 shown in FIG. 13, it passes between the reinforcing bars 122 with respect to the pipe position of the drain pipe. The sheath tube 10 is installed in At this time, for example, the holding member 110 is attached so as to connect the holding member attaching portion 46 provided in the upper opening reinforcing portion 42 and the protruding portion 124 of the basic form frame 120, and the sheath tube 10 is temporarily fixed. . Further, the lateral opening 30b of the sheath tube main body 30 is sealed with a sealing member 126 such as a cap or a tape in order to prevent the entry of ready-mixed concrete or dust into the sheath tube main body 30.

  After the installation of the sheath tube 10, a concrete foundation is placed in the foundation mold 120 so that the upper opening reinforcing portion 42 protrudes from the upper surface of the solid foundation 128, and the sheath tube 10 is embedded and fixed. Thereafter, the base mold 120 and the like are removed, the upper opening reinforcing portion 42 is cut and removed, and the sealing member 126 attached to the lateral opening 30b of the sheath tube main body 30 is removed. Thereby, since the through-hole which connects the indoor side and the outdoor side of the solid foundation 128 is formed by the sheath tube main body 30, a drain pipe is installed using this through-passage.

  Also in the embodiment shown in FIG. 13, as in the embodiment shown in FIG. 1, the upper opening reinforcing portion 42 that connects the periphery to the upper opening 30 a of the sheath tube body 30 is provided. The deformation of the sheath tube 10 due to the ready-mixed concrete pressure can be appropriately prevented. In addition, since the upper opening reinforcing portion 42 also functions as a cap, the work of sealing the upper opening 30a using a cap, a tape, or the like can be omitted.

  It should be noted that the specific numerical values such as the dimensions mentioned above are merely examples, and can be appropriately changed as necessary.

DESCRIPTION OF SYMBOLS 10 ... Base-through sheath pipe 12 ... Inner pipe 14 ... Indoor side pipe 16 ... Outdoor side pipe 30 ... Sheath pipe main body 30a ... Upper opening 30b ... Lateral opening 32 ... Lateral sheath pipe part 34 ... Curved part 36 ... Vertical sheath pipe part 42 ... Upper opening reinforcing portion 44 ... Horizontal opening reinforcing portion 46 ... Holding member attaching portion 100 ... Cloth foundation 102 ... Rising part (rising foundation)
104 ... footing 106 ... void hole 116 ... dirt concrete 128 ... solid foundation

Claims (6)

A sheath pipe for passing through the foundation used for the construction of piping that penetrates the foundation of the building,
A sheath tube for base penetration, comprising: a sheath tube main body having an upper opening and a lateral opening; and an upper opening reinforcing portion for connecting a peripheral edge of the upper opening so as to cover the upper opening.   The sheath tube for base penetration of Claim 1 provided with the holding member attaching part provided in the said upper opening reinforcement part, and the holding member for temporarily fixing the said sheath pipe for base penetration is attached.   The upper surface of the said upper opening reinforcement part is a sheath pipe for foundation penetration of Claim 1 or 2 which has a horizontal surface.   The sheath tube for base penetration in any one of Claims 1 thru | or 3 provided with the horizontal opening reinforcement part which connects the periphery of the said horizontal opening so that the said horizontal opening may be covered. A pipeline construction method for constructing piping that penetrates the foundation of a building,
(A) a step of providing a basic through-hole sheath tube comprising a sheath tube main body having an upper opening and a lateral opening, and an upper opening reinforcing portion for connecting the periphery of the upper opening so as to cover the upper opening;
(B) a step of fitting the transverse sheath tube portion of the sheath tube main body into the rising foundation void hole and installing the foundation penetration sheath tube;
(C) After installing the foundation penetration sheath tube in the step (b), placing the soil concrete so that the upper opening reinforcing portion protrudes, and burying and fixing the foundation penetration sheath tube;
(D) cutting the upper opening reinforcing portion from the sheath pipe main body after embedding and fixing the base penetration sheath pipe in the step (c); and (e) reinforcing the upper opening reinforcement in the step (d). A pipe construction method including a step of inserting and installing the pipe into the base penetration sheath pipe after cutting the section. A pipeline construction method for constructing piping that penetrates the foundation of a building,
(A) a step of installing a basic formwork in which reinforcing bars are arranged;
(B) a step of providing a basic through-hole sheath tube comprising a sheath tube main body having an upper opening and a lateral opening, and an upper opening reinforcing portion for connecting the periphery of the upper opening so as to cover the upper opening;
(C) installing the base penetration sheath tube so as to pass between the reinforcing bars;
(D) After installing the foundation penetration sheath tube in the step (c), placing a concrete foundation so that the upper opening reinforcing portion protrudes, and burying and fixing the foundation penetration sheath tube;
(E) cutting the upper opening reinforcing portion from the sheath pipe main body after embedding and fixing the foundation penetration sheath pipe in the step (d), and (f) reinforcing the upper opening reinforcement in the step (e). A pipe construction method including a step of inserting and installing the pipe into the base penetration sheath pipe after cutting the section.

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