JP7132878B2 - Fitting joint construction method, vibrator and protection pipe that can be used for this method - Google Patents

Description

TECHNICAL FIELD The present invention relates to a fitting joint construction method capable of improving the filling property of a fitting joint for constructing a continuous wall structure, a vibrator and a protection pipe that can be used in this method.

A construction method in which steel wall members are continuously built into the ground is known as a steel diaphragm wall construction method. In this construction method, the ground is excavated, and the wall members are erected in the soil cement obtained by mixing and stirring the in-situ earth and sand generated by the excavation and the solidified liquid, and the wall members are connected to the adjacent wall members. A mating joint is provided between the wall members for the purpose. When a certain period of time elapses before the adjacent wall member is erected, and the soil cement adhering to the joint of the wall member solidifies, the effect of the fitted joint becomes insufficient. For this reason, as shown in FIG. 7(a), the protective pipe BP is inserted into the female joint JI when the wall member is erected, and after a certain period of time has elapsed, the protective pipe BP is pulled out in the next process, and then the adjacent wall member is installed. It is common to erect wall members.

Patent document 1 discloses a joint cleaning machine for removing mud cake attached to the joint of a diaphragm wall. By moving it up and down, the tip of the brush comes into sliding contact with the surfaces of the joint bars and partition steel plates, scraping off the mud cakes adhering to the surfaces of the reinforcing bars and steel plates (Fig. 7). Patent Literature 2 discloses a joint cleaning machine in which a brush-equipped vibrator is provided around the side of the cleaning machine body, and the brush-equipped vibrator adheres to the surface by transmitting minute vibrations to reinforcing bars and partition steel plates that are in contact with it. Peel off the mud cake (Figs. 5 and 6).

In Patent Document 3, steel panels connected to each other via joints are erected in a rectangular excavated hole dug in the ground, and then the excavated hole is filled with a hardening material such as concrete. In a method for cleaning steel materials in a diaphragm wall construction method in which front and rear panels connected in a horizontal direction are sequentially constructed, in a state in which a hole for the rear panel is drilled in the horizontal direction of the front panel, The steel panel exposed at the end of the excavation hole is sprayed with the stabilizing liquid filled in the excavation hole while moving vertically, and a cleaning brush is inserted into the joint and moved vertically. Disclosed is a method for cleaning a steel material for an intermediate continuous wall (claim 1).

Patent No. 2613541 Patent No. 2613542 Patent No. 3009846

In the conventional steel diaphragm wall construction method, for example, the female joint JI of the wall member erected the day before depends on the self-filling of the soil cement, and in addition, it is protected as shown in FIG. The gap gp (for example, about 10 mm) with the pipe BP is in a state where fragile soil cement or earth and sand adhere. In this state, when the protective pipe BP is pulled out and the internal cavity of the female joint JI is filled with soil cement, a water path is formed at the boundary bd between the old soil cement LC and the new soil cement NC, as shown in FIG. 7(b). Insufficient filling tends to occur, and the water stoppage is lowered, which may cause water leakage.

Patent Documents 1 to 3 disclose that the mud adhering to the surface is removed by filling or spraying a stabilizing liquid into the groove of the joint to be cleaned, or by transmitting minute vibrations to reinforcing bars and partition steel plates with a vibrator with a brush. It removes the cake, and requires a special stabilizing liquid, injection means, and vibration means.

In view of the problems of the prior art as described above, the present invention has been made to improve the filling performance of a fitting joint between wall members that are connected by being filled with a solidifying material having fluidity such as soil cement, so that the solidifying material is solidified. To provide a fitting joint construction method capable of exhibiting good water stoppage after being filled and solidified, a vibrator and a protection pipe that can be used in this method.

A fitting joint construction method for achieving the above object connects a first wall member and a second wall member by filling and solidifying a fluid solidifying material for constructing a continuous wall structure. A method of constructing a mating joint, comprising:
the first wall member has at its end a female joint having an internal cavity filled with the solidifying material;
The second wall member has a male joint inserted into the female joint at an end,
The first wall member is erected at the construction position and a protective pipe is inserted into the female joint, and a gap is provided between the inner peripheral surface of the female joint and the outer peripheral surface of the protective pipe. excavating the ground for erection of the second wall member with the
a step of stirring and mixing the excavated in-situ earth and sand and the solidifying liquid to form a fluid solidifying material;
placing a vibrator having a detection sensor capable of detecting the solidifying material in the female joint by inserting the vibrator into the protection pipe ;
a step of vibrating the hardening material in the female joint with the vibrator;
a step of detecting the presence or absence of the solidifying material in the female joint by the detection sensor;
pulling up the vibrator within the female joint;
When erecting the second wall member after the removal of the vibrator and the protection pipe is completed, the male joint of the second wall member is inserted into the female joint of the first wall member to form the fitting joint. and
The lifting of the vibrator is controlled based on the result of detection of the solidifying material by the detection sensor.

According to this fitted joint construction method, the vibrator applies vibrations to the fluid solidifying material in the female joint in a state where the first wall member is installed, so that the solidifying material moves downward easily. As a result, the inside of the female joint is densely filled, the filling property is improved, and good water stoppage can be exhibited after solidification. By detecting the presence or absence of the solidifying material in the female joint with a detection sensor and controlling the pulling up of the vibrator based on the detection result, the filling of the solidifying material in the female joint is improved and solid filling is ensured. be able to. For example, when no solidifying material is detected by the detection sensor, the vibrator is stopped pulling up and the vibration by the vibrator is continued, so that the unfilled portion of the female joint with the solidifying material is reliably eliminated and the solidifying material is filled densely. can be done.

In the fitted joint construction method, it is preferable that the vibrator is lifted by a predetermined height and the protection pipe is lifted by a predetermined height after the detection sensor detects the solidifying material.

The ground is excavated for erecting the second wall member in a state where the first wall member is erected at the construction position and the protective pipe is inserted into the female joint. The in-situ earth and sand and the solidified liquid are stirred and mixed to form a fluid solidified material, and then the vibrator is inserted into the protection pipe and placed in the female joint, and then vibration is performed by the vibrator to cause the detection. It is preferable that the protection pipe is pulled up by a predetermined height after the sensor detects the solidifying material.

The protective pipe has a lid portion at its lower end that can be opened by force from above, and the vibrator is inserted into the protective pipe and comes into contact with the lid portion to open the lid portion. It is preferably arranged in said internal cavity through the lower end of the pipe.
Further, the lid portion of the protection pipe is biased by an urging member to close the opening at the lower end of the protection pipe, and when the vibrator is inserted into the protection pipe, it abuts on the lid portion. It is preferable that the lid portion is opened against the biasing force of the biasing member.

The vibrator has a cleaning brush protruding from its outer peripheral portion toward the inner peripheral surface of the female joint for cleaning the inner peripheral surface. It is preferable to remove deposits adhering to the inner peripheral surface. The cleaning brush can clean the inner peripheral surface of the female joint in conjunction with the lifting of the vibrator.

Further, the vibrator has a cleaning brush protruding from its outer peripheral portion toward the inner peripheral surface of the female joint for cleaning the inner peripheral surface. A cleaning brush is bent and accommodated within the protection pipe, and when the protection pipe is pulled up, the cleaning brush spreads within the female joint, and while the vibrator is pulled up within the female joint, the cleaning brush It is preferable to remove deposits adhering to the inner peripheral surface.

A vibrator for achieving the above object is used in the fitting joint construction method described above.

A protective pipe for achieving the above object is used in the fitting joint construction method described above.

According to the present invention, the fitting joint between the wall members that are connected by being filled with a solidifying material having fluidity is improved in filling performance, and the solidifying material is densely filled, and a fitting that can exhibit good water stoppage after solidification. A joint construction method, a vibrator that can be used for this method, and a protective pipe can be provided.

A top view (a) of a wall member built into the ground to construct a continuous wall by the steel diaphragm wall construction method of this embodiment, and an upper surface of a continuous wall member built in the same manner adjacent to the wall member. It is a figure (b). A vertical cross-sectional view (a) showing the essential parts of the protection pipe and vibrator that can be used in this embodiment, a perspective view (b) showing the lid part in the closed state at the lower end of the protection pipe, and a perspective view (b) showing the lid part in the open state It is a principal part perspective view (c) which shows a cover part. Top view (a) showing the cleaning brush provided in the vibrator of FIG. 2 (a) and housed in the protection pipe, and top view (b) showing the cleaning brush spread toward the inner peripheral surface of the female joint. is. 4 is a flow chart for explaining steps S01 to S12 for constructing a continuous wall according to this embodiment. FIG. 5 is a flow chart for explaining steps S21 to S27 relating to construction of a fitting joint executed between steps S07 and S08 of FIG. 4; FIG. FIG. 2(a) is a longitudinal cross-sectional view similar to FIG. 2(a), which schematically shows how the protection pipe is pulled up with the vibrator inserted in construction of the fitting joint according to the present embodiment; It is a principal part longitudinal cross-sectional view (b) which shows a state roughly. Top view (a) showing a state in which a protective pipe is inserted into a female joint of a wall member when erecting the wall member in the steel diaphragm wall construction method, and water generated after filling and solidifying soil cement in the conventional construction method. It is a top view (b) which shows a path roughly.

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing this invention is demonstrated using drawing. FIG. 1 is a top view (a) of a wall member built into the ground to construct a continuous wall in the ground by the steel diaphragm wall construction method of this embodiment, and a wall member built in the same manner adjacent to the wall member. It is a top view (b) of a contiguous wall member.

First, referring to FIGS. 1(a) and 1(b) for the first wall member and the second wall member erected in the ground for constructing the continuous wall in the ground by the steel diaphragm wall construction method in this embodiment. and explain.

As shown in FIG. 1(a), in the continuous wall construction area A, a first wall member 11a, a second wall member 12a, and a first wall member 11b are placed in the ground in order from the left of the figure in the lateral direction. built in. The first wall members 11a and 11b include a pair of flanges 13 and 13 made of steel plates, a web 14 made of a steel plate connecting the pair of flanges 13 and 13, and female members provided at both ends of the pair of flanges 13 and 13, respectively. and a small-diameter tube 15 forming a joint. The small-diameter tube 15 is made of a steel tube, and has a longitudinally extending inner cavity 15a and a longitudinally formed notch 15b.

The second wall member 12a includes a pair of steel plate flanges 13, 13, a steel plate web 14 connecting the pair of flanges 13, 13, and male joints provided at both ends of the pair of flanges 13, 13, respectively. and a narrow plate 16 made of a steel plate. The second wall member 12a is erected by inserting its narrow plate 16 into the internal cavity 15a through the notch 15b of the small-diameter tube 15 of the first wall member 11a. Thus, the small-diameter tube 15 of the first wall member 11a and the narrow plate 16 of the second wall member 12a form a fitting joint for connecting the first wall member 11a and the second wall member 12a. do. In addition, a protective pipe 20 is inserted into the internal cavity 15a on the right end side of the first wall member 11b in order to erect the adjacent second wall member 12b (FIG. 1(b)) in the next step. .

As shown in FIG. 1(b), in the continuous wall construction area B adjacent to the continuous wall construction area A, the second wall member 12b having the same configuration as described above, the first A wall member 11c is built into the ground.

Next, the protective pipe and vibrator used in this embodiment will be described with reference to FIGS. 2 and 3. FIG. FIG. 2 is a longitudinal cross-sectional view (a) of a protective pipe and a vibrator that can be used in this embodiment, a perspective view (b) of a main part showing a closed lid at the lower end of the protective pipe, and a It is a principal part perspective view (c) which shows a cover part. FIG. 3 is a top view (a) showing the cleaning brush provided in the vibrator of FIG. (b).

As shown in FIG. 2(a), the protective pipe 20 has a dimension that allows it to be inserted into the internal cavity 15a of the small-diameter tube 15 that constitutes the female joint of the first wall members 11a, 11b, and 11c of FIG. Its tip 21 is inclined so as to be pointed. As shown in FIG. 2(b), the lid portion 22 is attached to the tip 21 of the protection pipe 20 at an angle, and is biased by a coil spring (not shown) at the hinge 23 to close the opening of the tip 21. As shown in FIG. By closing the opening of the tip 21 of the protection pipe 20 with the lid 22, the agitated soil cement does not flow into the protection pipe 20. - 特許庁

As shown in FIG. 2(c), when the vibrator 30 is inserted into the protection pipe 20, the tip 31 of the vibrator 31 abuts against the lid portion 22, and when the lid portion 22 receives a force pushing from above, the coil spring (illustrated) of the hinge 23 is pushed. (omitted) is rotated against the urging force, the tip 21 of the protection pipe 20 is opened. The protection pipe 20 is designed to be pulled up after a vibrator 30, which will be described later, is inserted.

As shown in FIG. 2( a ), the vibrator 30 includes a vibrating portion 32 that is arranged on the tip 31 side and vibrates, and a predetermined height F (for example, 50 cm) from the tip 31 that can detect a solidifying material such as soil cement. It has a detection sensor 33 and cleaning brushes 34 and 35 provided on the outer peripheral surface. The vibrator 30 is inserted into the protection pipe 20 by unwinding the wire 36 from the wound state by an electric reel (not shown) installed on the ground, and vibrates the solidification material inside the internal cavity 15a. When applied, the vibrator 30 is pulled up by being automatically rolled up corresponding to a predetermined height H (FIG. 6).

The detection sensor 33 can use a known voltage-applied sensor consisting of a pair of electrodes (not shown), and can detect soil cement, concrete, mortar, water, and air. The wire 36 accommodates wiring of the detection sensor 33 and an electric cable for supplying power to the vibrating portion 32 .

As shown in FIG. 2(a), the cleaning brushes 34 and 35 are provided in two stages on the inner peripheral surface of the vibrator 30 so as to clean the inner peripheral surface of the internal cavity 15a. As shown in (a), the vibrator 30 is elastically bent in the protective pipe 20 while being inserted into the protective pipe 20 . When the protection pipe 20 is pulled out of the internal cavity 15a, the cleaning brushes 34, 35 expand elastically within the internal cavity 15a, and while the vibrator 30 is pulled up within the internal cavity 15a, as shown in FIG. 3(b). The cleaning brushes 34 and 35 remove deposits adhering to the inner peripheral surface of the internal cavity 15a.

The cleaning brushes 34 and 35 can be composed of a large number of elastic linear materials made of resin such as polyethylene. The radial length of the cleaning brushes 34, 35 is preferably slightly longer than the distance from the outer peripheral surface of the vibrator 30 to the inner peripheral surface of the internal cavity 15a. Further, the cleaning brushes may be provided in multiple stages.

Next, each step of constructing a continuous wall in the ground according to this embodiment will be described with further reference to FIGS. 4 to 6. FIG. FIG. 4 is a flow chart for explaining steps S01 to S12 for constructing a continuous wall according to this embodiment. FIG. 5 is a flowchart for explaining steps S21 to S27 relating to construction of a fitting joint executed between steps S07 and S08 of FIG. FIG. 6 is a longitudinal cross-sectional view (a) similar to FIG. It is a principal part longitudinal cross-sectional view (b) which shows roughly the mode of vibration and cleaning.

1 to 4, first, the ground is excavated by an excavating machine at the construction position of the continuous wall (S01), the in-situ earth and sand generated by the excavation, a solidified liquid composed of cement and water, are mixed and stirred (S02), and then the wall member is erected in the soil cement (S03). For example, the first wall member 11a, the second wall member 12a, and the first wall member 11b are erected in order in the continuous wall construction area A in FIG. 1(a).

Next, like the first wall member 11b in FIG. 1(a), the protective pipe 20 is inserted into the internal cavity 15a of the unconstructed end of the female joint (S04). Then, after a predetermined period of time has passed, the soil cement in the area A in FIG. 1(a) is solidified (S05). As described above, as shown in FIG. 1A, the first wall member 11a and the second wall member 12a are connected by a fitting joint, and the second wall member 12a and the first wall member are connected. 11b are connected by fitting joints. The steps S01 to S05 described above are used as the construction of the first (reference pile) wall member, and then the construction on the next day and thereafter continues.

For example, in the area B adjacent to the continuous wall construction area A in FIG. is pulled out by a crane on the ground, the vibrator 30 is pulled out by an electric reel on the ground (S08), the cleaning brushes 34 and 35 are inspected (S09), and after confirming the cleaning state of the inner peripheral surface of the internal cavity 15a, the wall The members are erected (S10). For example, the second wall member 12b and the first wall member 11c are erected in order in the continuous wall construction area B in FIG. 1(b).

Next, like the first wall member 11c in FIG. 1(b), the protection pipe 20 is inserted into the inner cavity 15a of the unconstructed female joint to prevent the penetration of excavated earth and sand (S11). Note that the first wall member 11c and the protection pipe 20 may be erected together. After a predetermined period of time has elapsed, the soil cement in section B in FIG. 1(b) is solidified (S12). As described above, the first wall member 11b and the second wall member 12b are connected by a fitting joint, and the second wall member 12b and the first wall member 11c are connected by a fitting joint. be. Further, when construction is to be performed in the adjacent area (S13), it moves to the adjacent area and repeats the same steps from step S06.

As described above, the first wall members 11a, 11b, 11c, . . . and the second wall members 12a, 12b, . Walls can be built in the ground.

Next, referring to FIGS. 1 to 6, each step S21 to S27 (FIG. 5) for constructing a fitting joint will be described. After the soil cement stirring step S07 in FIG. , the vibrator 30 is inserted into the protection pipe 20 inside the internal cavity 15a of the first wall member 11b of FIGS. 1(a) and 1(b) (S21).

As shown in FIGS. 2(a) to 2(c), when the tip 31 of the vibrator 30 is inserted and the tip 31 comes into contact with the cover 22 of the tip 21 of the protection pipe 20, the cover 22 opens and the vibrator passes through the opening of the tip 21. 30 protrudes from the tip 21 of the protective pipe 20 (S22).

The soil cement stirred in the stirring step S07 (FIG. 4) flows into the bottom of the internal cavity 15a of the female joint of the first wall member through the notch 15b (FIG. 1). Vibration is applied to the soil cement in the cavity 15a (S23). This facilitates the inflow of the soil cement SC into the inner cavity 15a.

When the vibrator 32 of the vibrator 30 starts to vibrate, the detection sensor 33 operates to detect the presence or absence of soil cement (S24). When the detection sensor 33 does not detect the soil cement, the vibration by the vibrator 30 is continued without pulling up the vibrator 30. - 特許庁

When the detection sensor 33 detects the soil cement SC in the detection step S24, as shown in FIGS. S25).

As the protective pipe 20 is pulled up, the cleaning brushes 34 and 35 inside the protective pipe 20 spread out in the internal cavity 15a as shown in FIG. 3(b). moves relative to the inner peripheral surface of the internal cavity 15a to remove fragile soil cement, earth and sand, etc. adhering to the inner peripheral surface of the internal cavity 15a.

The predetermined height H to which the vibrator 30 is lifted in step S25 is preferably matched with the filling height of the soil cement SC, and specifically, it is, for example, about 50 cm. 6(a), the protective pipe 20 is pulled up to a height that allows the cleaning brushes 34 and 35 to come off the protective pipe 20 and expand in the internal cavity 15a. , may be approximately the same as the predetermined height H of lifting of the vibrator 30 .

Further, by lifting the protection pipe 20 by a predetermined height prior to lifting the vibrator 30 by the predetermined height H, the vibrator 30 can be reliably lifted, and the cleaning brushes 34 and 35 can move the protection pipe. 20, there is no problem in cleaning the inner peripheral surface of the internal cavity 15a.

Next, it is checked whether or not the depth position of the vibrator 30 has reached the top of the wall member (S26). Vibration is applied to the cement SC, and the same steps S24 to S26 are repeated, and when it reaches the vibrator 30 completes the vibration (S27). Next, steps S09 and S10 of FIG. 4 described above follow.

According to the fitting joint construction method according to the present embodiment described above, the vibration is applied by the vibrator 30 to the fluid soil cement in the internal cavity 15a of the female joint in a state where the first wall member is erected. Therefore, the soil cement can easily move downward, and the internal cavity 15a is densely filled, thereby improving the filling property and exhibiting good waterproof performance after solidification.

In addition, the detection sensor 33 detects the presence or absence of soil cement in the internal cavity 15a, and based on the detection result, controls the pulling up of the vibrator 30 to ensure solid filling of the internal cavity 15a with soil cement. It can be carried out. When the detection sensor 33 does not detect the soil cement, the lifting of the vibrator 30 is stopped and the vibrating by the vibrator 30 is continued, so that the unfilled portion of the solidifying material in the internal cavity is reliably eliminated and the solidifying material is densely filled. be able to.

In addition, since the cleaning brushes 34 and 35 provided in the vibrator 30 clean the inner peripheral surface of the internal cavity 15a in conjunction with the pulling up of the vibrator 30 in the internal cavity 15a, the special stability as in Patent Documents 1 to 3 can be obtained. No liquid, injection means or vibration means are required. Since the cleaning brushes 34 and 35 remove fragile soil cement, earth and sand adhering to the inner peripheral surface of the internal cavity 15a, a water path is formed at the boundary between the old and new soil cement near the inner peripheral surface of the internal cavity 15a. can be prevented, and water stoppage is improved.

Although the embodiments for carrying out the present invention have been described above, the present invention is not limited to these, and various modifications are possible within the scope of the technical idea of the present invention. For example, in this embodiment, the ground is excavated in an area adjacent to the first wall member in the erected state, the soil cement is agitated at the location of the excavation, and the soil cement is mixed in the female joint adjacent to the area. After filling, the second wall member was erected, but the present invention is not limited to this, and a solidifying material such as soil cement is put directly into the female joint of the first wall member in the erected state. After applying vibration with a vibrator and confirming that there is no unfilled portion of the solidifying material with a detection sensor, the male joint of the second wall member is inserted into the female joint of the first wall member. Two wall members may be erected. In this case, the protective pipe can be omitted.

Further, although the raising of the vibrator 30 in step S25 of FIG. 5 is performed intermittently by a predetermined height, the present invention is not limited to this. If not detected, pulling may be stopped and vibration may be performed until soil cement is detected.

In addition to soil cement, for example, concrete or mortar can be used as the solidifying material.

In addition, in the present embodiment, a continuous wall constructed by a steel diaphragm wall construction method is targeted, but the present invention is not limited to this, and may be a continuous wall structure using sheet piles or the like connected by fitting joints. .

According to the fitting joint construction method of the present invention, the fitting joint between wall members that are filled with a solidifying material having fluidity and are connected to each other is improved in filling performance, and the solidifying material is densely filled, resulting in good sealing after solidification. Since it exhibits water resistance, the continuous wall structure to be constructed has improved water stoppage, and the occurrence of water leakage can be reliably prevented.

11a, 11b, 11c First wall member 12a, 12b Second wall member 15 Small diameter pipe (female joint)
15a Internal cavity 15b Notch 16 Narrow plate (male joint)
20 Protective pipe 22 Lid 23 Hinge 30 Vibrator 32 Vibrating part 33 Detection sensors 34, 35 Cleaning brush 36 Wires A, B Continuous wall construction area SC Soil cement

Claims (8)

A method for constructing a fitting joint for connecting a first wall member and a second wall member by filling and solidifying a fluid solidifying material for construction of a continuous wall structure, the method comprising:
the first wall member has at its end a female joint having an internal cavity filled with the solidifying material;
The second wall member has a male joint inserted into the female joint at an end,
The first wall member is erected at the construction position and a protective pipe is inserted into the female joint, and a gap is provided between the inner peripheral surface of the female joint and the outer peripheral surface of the protective pipe. excavating the ground for erection of the second wall member with the
a step of stirring and mixing the excavated in-situ earth and sand and the solidifying liquid to form a fluid solidifying material;
placing a vibrator having a detection sensor capable of detecting the solidifying material in the female joint by inserting the vibrator into the protection pipe ;
a step of vibrating the hardening material in the female joint with the vibrator;
a step of detecting the presence or absence of the solidifying material in the female joint by the detection sensor;
pulling up the vibrator within the female joint;
When erecting the second wall member after the removal of the vibrator and the protection pipe is completed, the male joint of the second wall member is inserted into the female joint of the first wall member to form the fitting joint. and
A fitting joint construction method for controlling lifting of the vibrator based on a detection result of the solidifying material by the detection sensor. 2. The fitting joint construction method according to claim 1, wherein the vibrator is lifted by a predetermined height and the protection pipe is lifted by a predetermined height after the solidifying material is detected by the detection sensor. The protective pipe has a lid at its lower end that can be opened by force from above,
3. The vibrator according to claim 1 or 2 , wherein the vibrator is inserted into the protective pipe and comes into contact with the cover to open the cover, and then passes through the lower end of the protective pipe and is arranged in the female joint. Fitting joint construction method. The lid portion of the protection pipe is biased by a biasing member to close the opening at the lower end of the protection pipe. 4. The fitting joint construction method according to claim 3, wherein the portion is opened against the biasing force of the biasing member . The vibrator has a cleaning brush protruding from its outer peripheral portion toward the inner peripheral surface of the female joint for cleaning the inner peripheral surface, and the inner peripheral surface is cleaned by the cleaning brush while being pulled up inside the female joint. 5. The fitted joint construction method according to any one of claims 1 to 4, wherein deposits adhering to the peripheral surface are removed. the vibrator has a cleaning brush protruding from its outer peripheral portion toward the inner peripheral surface of the female joint for cleaning the inner peripheral surface;
The cleaning brush is bent and accommodated in the protective pipe with the vibrator inserted into the protective pipe,
By pulling up the protective pipe, the cleaning brush spreads within the female joint,
5. The fitting joint construction method according to any one of claims 1 to 4, wherein deposits adhering to said inner peripheral surface are removed by said cleaning brush while said vibrator is pulled up inside said female joint. A vibrator used in the fitted joint construction method according to any one of claims 1 to 6. A protective pipe used in the fitted joint construction method according to any one of claims 1 to 6 .

Images