JP2020159010A - Installation method for fitting joint, vibrator applicable for this method and guard pipe - Google Patents

Abstract

To provide an installation method for a fitting joint improving a filling property for a fitting joint between wall members jointed through being filled with a solidification material having flowability and achieving excellent cut-off performance after the solidification material is solidly filled and solidified.SOLUTION: An installation method for a fitting joint comprises: a step S21 of inserting a vibrator with a detecting sensor capable of detecting a solidification material into a female joint of a first wall member; a step S23 of applying vibration with the vibrator to the solidification material in the female joint; a step S24 of detecting with the detecting sensor whether the solidification material is in the female joint or not; a step S25 of lifting up the vibrator; and a step of forming the fitting joint through inserting a male joint of a second wall member into the female joint of the first wall member, to control lifting of the vibrator based on a detection result by the detecting sensor, when installing the fitting joint jointing the first wall member and the second wall member through filling and solidifying the solidification material having flowability to construct a consecutive wall structure.SELECTED DRAWING: Figure 5

Description

The present invention relates to a fitting joint construction method capable of improving fillability in a fitting joint for constructing a continuous wall structure, a vibrator and a protective pipe that can be used in this method.

A method of continuously building steel wall members in the ground is known as a steel underground continuous wall method. In this construction method, the wall member is built in the soil cement obtained by excavating the ground and mixing and stirring the in-situ earth and sand generated by this excavation and the solidifying liquid, but the wall member and the adjacent wall member are connected. A fitting joint is provided between the wall members for this purpose. If a certain amount of time elapses until the adjacent wall member is built and the soil cement adhering to the wall member joint solidifies, the effect of the fitting joint becomes insufficient. Therefore, as shown in FIG. 7A, the protective pipe BP is inserted into the female joint JI when the wall member is built, and the protective pipe BP is pulled out in the next process after a lapse of a certain period of time and then adjacent. It is common to build wall members.

Patent Document 1 discloses a joint cleaner for removing mud cake adhering to a joint portion of an underground continuous wall, and a cleaner in which a brush is densely planted on a side surface of a main body in a stabilizing liquid filled in a groove. By raising and lowering, the tip of the brush slides into contact with the surface of the joint bar and the partition steel plate, and the mud cake adhering to the surface of the reinforcing bar and the steel plate is scraped off (Fig. 7). Patent Document 2 discloses a joint cleaner in which a brushed vibrator is provided around a side surface of a cleaner body, and is attached to the surface by transmitting minute vibrations to a reinforcing bar or a partition steel plate in contact with the brushed vibrator. The mud cake is peeled off (FIGS. 5 and 6).

In Patent Document 3, a steel panel connected to each other via a joint portion is built in a rectangular excavation hole excavated in the ground, and then a curable material such as concrete is filled in the excavation hole. In the method of cleaning steel materials in the underground continuous wall construction method in which the leading and trailing panels connected in the lateral direction are sequentially constructed, the drilling holes for the trailing panel are drilled in the lateral direction of the leading panel. The stabilizer liquid filled in the drilling hole is sprayed onto the steel panel exposed at the end of the drilling hole while moving in the vertical direction, and a cleaning brush is inserted into the joint to move the shaft up and down. A method for cleaning a steel material for a medium continuous wall is disclosed (claim 1).

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

In the conventional steel underground continuous wall construction method, for example, the female joint JI of the wall member built on the previous day depends on the self-filling property of the soil cement and is protected as shown in FIG. 7 (a). A fragile soil cement or earth and sand adheres to the gap gp (for example, about 10 mm) with the pipe BP. 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, as shown in FIG. 7 (b), a water path is formed at the boundary bd between the old soil cement LC and the new soil cement NC. May occur, or insufficient filling may occur, the water stoppage may decrease, and water leakage may occur.

Patent Documents 1 to 3 describe mud adhering to the surface by filling or injecting a stabilizing liquid into the groove of the joint to be cleaned, or by transmitting minute vibration to a reinforcing bar or a partition steel plate with a brushed vibrator. It peels off the cake and requires special stabilizers, injection means, and vibration means.

In view of the above-mentioned problems of the prior art, the present invention improves the filling property in the fitting joint between the wall members to which a fluid solidifying material such as soil cement is filled and connected, and the solidifying material is densely packed. It is an object of the present invention to provide a fitting joint construction method capable of exhibiting good water stopping property after filling and solidification, and a vibrator and a protective pipe that can be used in this method.

In the fitting joint construction method for achieving the above object, the first wall member and the second wall member are connected by filling with a fluid solidifying material and solidifying in order to construct a continuous wall structure. It is a method of constructing a fitting joint,
The first wall member has a female joint at the end having an internal cavity filled with the solidifying material.
The second wall member has a male joint at the end to be inserted into the female joint.
A step of inserting a vibrator having a detection sensor capable of detecting a solidifying material into the female joint with the first wall member built in the construction position.
A step of applying vibration to the solidifying material in the female joint by the vibrator, and
A process of detecting the presence or absence of a solidifying material in the female joint by the detection sensor, and
The step of pulling up the vibrator in the female joint and
The step of inserting the male joint of the second wall member into the female joint of the first wall member to form the fitting joint when the second wall member is built is included.
The pulling up of the vibrator is controlled based on the detection result of the solidifying material by the detection sensor.

According to this fitting joint construction method, the solidifying material can easily move downward by applying vibration to the fluid solidifying material in the female joint with the first wall member built in by a vibrator. As a result, the female joint is densely filled, the filling property is improved, and good water stopping property can be exhibited after solidification. By detecting the presence or absence of the solidifying material in the female joint by the detection sensor and controlling the pulling up of the vibrator based on the detection result, the filling property of the solidifying material in the female joint is improved and the filling is surely performed. be able to. For example, when the solidifying material is not detected by the detection sensor, the vibrator is stopped from being pulled up and the vibration by the vibrator is continued to surely eliminate the unfilled part of the solidifying material in the female joint and to fill the solidifying material densely. Can be done.

In the fitting joint construction method, it is preferable to pull up the vibrator by a predetermined height after detecting the solidifying material by the detection sensor.

Further, the ground was excavated for the construction of the second wall member in a state where the first wall member was built at the construction position and the protective pipe was inserted into the female joint, and the excavation was performed. The in-situ earth and sand and the solidifying liquid are stirred and mixed to form a fluid solidifying material, and then the vibrator is inserted into the protective pipe and placed in the female joint, and then vibrated by the vibrator to perform the detection. After detecting the solidifying material by the sensor, it is preferable to pull up the protective pipe by a predetermined height.

The protective pipe has a lid portion at the lower end that can be opened by a force from the upper portion, and the vibrator is inserted into the protective pipe and abuts on the lid portion to open the lid portion, and then the protection is performed. It is preferably placed in the internal cavity through the lower end of the pipe.

Further, the vibrator has a cleaning brush that protrudes from the outer peripheral portion thereof toward the inner peripheral surface of the female joint to clean the inner peripheral surface, and is pulled up in the female joint by the cleaning brush. It is preferable to remove the deposits adhering to the inner peripheral surface. The cleaning brush can clean the inner peripheral surface of the female joint in conjunction with pulling up the vibrator.

Further, the vibrator has a cleaning brush that protrudes from the outer peripheral portion thereof toward the inner peripheral surface of the female joint to clean the inner peripheral surface, and the vibrator is inserted into the protective pipe. The cleaning brush is bent and housed in the protective pipe, and when the protective pipe is pulled up, the cleaning brush spreads in the female joint, and while the vibrator is pulled up in the female joint, the cleaning brush is used. It is preferable to remove the deposits adhering to the inner peripheral surface.

The vibrator for achieving the above object is used in the above-mentioned fitting joint construction method.

The protective pipe for achieving the above object is used in the above-mentioned fitting joint construction method.

According to the present invention, in a fitting joint between wall members to which a fluid solidifying material is filled and connected, the filling property is improved and the solidifying material is densely filled to exhibit good water stopping property after solidification. A joint construction method, a vibrator and a protective pipe that can be used for this method can be provided.

Top view (a) of a wall member built underground to construct a continuous wall by the steel underground continuous wall construction method of the present embodiment and the upper surface of a continuous wall member built adjacent to the wall member in the same manner. FIG. (B). A vertical sectional view of a main part (a) showing a main part of a protective pipe and a vibrator that can be used in the present embodiment, a perspective view (b) of a main part showing a closed lid part at the lower end of the protective pipe, and an open state. It is a main part perspective view (c) which shows the lid part. Top view (a) showing a cleaning brush provided in the vibrator of FIG. 2 (a) and housed in the protective pipe, and top view (b) showing a cleaning brush spread toward the inner peripheral surface in the female joint. Is. It is a flowchart for demonstrating each process S01-S12 of continuous wall construction by this embodiment. It is a flowchart for demonstrating each process S21-S27 concerning the construction of the fitting joint executed between the process S07 and the process S08 of FIG. In the construction of the fitting joint according to the present embodiment, a vertical cross-sectional view (a) of a main part similar to FIG. 2 (a), which schematically shows a state in which the protective pipe is pulled up with the vibrator inserted, and vibration and cleaning by the vibrator are performed. It is a vertical sectional view (b) of a main part which shows the state schematicly. Top view (a) showing a state in which a protective pipe is inserted into the female joint of the wall member when the wall member is built in the steel underground continuous wall construction method, and water generated after filling and solidifying the soil cement in the conventional construction method. It is a top view (b) which shows the way schematicly.

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows a top view (a) of a wall member built underground in order to construct a continuous wall underground by the steel underground continuous wall construction method of the present embodiment, and similarly built adjacent to the wall member. It is a top view (b) of the built-in continuous wall member.

First, refer to FIGS. 1 (a) and 1 (b) for the first wall member and the second wall member to be built underground in order to construct a continuous wall in the ground by the steel underground continuous wall construction method in the present embodiment. I will explain.

As shown in FIG. 1A, in the continuous wall construction area A, the first wall member 11a, the second wall member 12a, and the first wall member 11b are underground in this order from the left side of the figure. It is built in. The first wall members 11a and 11b are provided at both ends of a pair of flanges 13 and 13 made of steel plates, a web 14 made of steel plates connecting the pair of flanges 13 and 13, and a pair of flanges 13 and 13, respectively. It has a small diameter pipe 15 that constitutes a joint. The small diameter pipe 15 is made of a steel pipe and has an internal cavity 15a extending in the vertical direction and a notch portion 15b formed in the vertical direction.

The second wall member 12a is provided with a pair of flanges 13 and 13 made of steel plates, a web 14 made of steel plates connecting the pair of flanges 13 and 13, and male joints provided at both ends of the pair of flanges 13 and 13, respectively. It has a narrow plate 16 made of a constituent steel plate. The second wall member 12a is built by inserting the narrow plate 16 into the internal cavity 15a through the notch 15b of the small diameter pipe 15 of the first wall member 11a. As a result, the small diameter pipe 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. To do. 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 build an adjacent second wall member 12b (FIG. 1B) in the next step. ..

As shown in FIG. 1B, in the continuous wall construction area B adjacent to the continuous wall construction area A, the second wall member 12b and the first wall member 12b having the same configuration as described above are arranged in order from the left side of the figure to the lateral direction. The wall member 11c is built underground.

Next, the protective pipe and the vibrator used in the present embodiment will be described with reference to FIGS. 2 and 3. FIG. 2 is a vertical sectional view (a) of a main part showing a main part of a protective pipe and a vibrator that can be used in the present embodiment, a perspective view (b) of a main part showing a closed lid portion at the lower end of the protective pipe, and an open view. It is a main part perspective view (c) which shows the lid part. 3A and 3B are a top view (a) showing a cleaning brush provided in the vibrator of FIG. 2A and housed in the protective pipe, and a top view showing a cleaning brush spread toward the inner peripheral surface of the internal cavity. (B).

As shown in FIG. 2A, the protective pipe 20 has a size that can be inserted into the internal cavity 15a of the small diameter pipe 15 that constitutes the female joint of the first wall member 11a, 11b, 11c of FIG. The tip 21 is inclined so as to be sharp. As shown in FIG. 2B, the lid 22 is attached to the tip 21 of the protective pipe 20 at an angle, and is urged by a coil spring (not shown) at the hinge 23 to close the opening of the tip 21. By closing the opening of the tip 21 of the protective pipe 20 with the lid portion 22, the agitated soil cement does not flow into the protective pipe 20.

As shown in FIG. 2C, when the vibrator 30 is inserted into the protective pipe 20, the tip 31 of the vibrator 30 abuts on the lid 22, and the lid 22 receives a force pushed from above, the coil spring of the hinge 23 (not shown). The tip 21 of the protective pipe 20 is opened by rotating against the urging force of (omitted). The protective pipe 20 is pulled up after the vibrator 30 described later is inserted.

As shown in FIG. 2A, the vibrator 30 is provided on the vibrating portion 32 arranged on the tip 31 side and vibrates, and is provided at a predetermined height F (for example, 50 cm) from the tip 31 and 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, and has an elongated shape like a pipe as a whole, and a wire 36 is connected to the upper end thereof. When the wire 36 is rewound from the state of being wound by an electric reel (not shown) installed on the ground, the vibrator 30 is inserted into the protective pipe 20 and the solidifying material is vibrated in the internal cavity 15a. The vibrator 30 is pulled up by being automatically wound up corresponding to a predetermined height H (FIG. 6) at the time of addition.

As the detection sensor 33, a known sensor of the applied voltage type including a pair of electrodes (not shown) can be used, and can detect soil cement, concrete, mortar, water, and air. The wire 36 houses the wiring of the detection sensor 33 and an electric cable for supplying power to the vibrating unit 32.

As shown in FIG. 2A, the cleaning brushes 34 and 35 are provided on the inner peripheral surface of the vibrator 30 in two stages apart from each other in the vertical direction so as to clean the inner peripheral surface of the internal cavity 15a. As shown in (a), the vibrator 30 is elastically bent and housed in the protective pipe 20 in a state of being inserted into the protective pipe 20. When the protective pipe 20 is pulled out from the internal cavity 15a, as shown in FIG. 3B, the cleaning brushes 34 and 35 elastically restore and expand in the internal cavity 15a, while the vibrator 30 is pulled up in the internal cavity 15a. Cleaning brushes 34 and 35 are used to remove deposits adhering to the inner peripheral surface of the internal cavity 15a.

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

Next, each step of constructing a continuous wall in the ground according to the present embodiment will be described with reference to FIGS. 4 to 6. FIG. 4 is a flowchart for explaining each process S01 to S12 of the continuous wall construction according to the present embodiment. FIG. 5 is a flowchart for explaining steps S21 to S27 relating to the construction of the fitting joint executed between the steps S07 and S08 of FIG. FIG. 6 is based on a vertical cross-sectional view (a) of a main part and a vibrator similar to FIG. 2 (a), which schematically shows a state in which a protective pipe is pulled up with a vibrator inserted in the construction of a fitting joint according to the present embodiment. It is a vertical sectional view (b) of a main part which shows the state of vibration and cleaning schematicly.

Explaining with reference to FIGS. 1 to 4, first, the ground is excavated by an excavation machine at the construction position of the continuous wall (S01), and the in-situ earth and sand generated by the excavation, the solidified liquid composed of cement and water, and the solidified liquid. After stirring the soil cement obtained by mixing and stirring (S02), the wall member is built in the soil cement (S03). For example, in the continuous wall construction area A of FIG. 1A, the first wall member 11a, the second wall member 12a, and the first wall member 11b are built in this order.

Next, as in the first wall member 11b in FIG. 1A, the protective pipe 20 is inserted into the internal cavity 15a at the end of the unconstructed female joint (S04). Then, as the predetermined time elapses, the soil cement in the area A of FIG. 1A solidifies (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 further connected. 11b is connected by a fitting joint. The above steps S01 to S05 are the construction of the first wall member (reference pile), and then the construction from the next day onward continues.

For example, in the area B adjacent to the continuous wall construction area A in FIG. 1 (b), the ground is excavated (S06), the soil cement is agitated (S07), and the protective pipe 20 in FIG. 2 (a) is excavated in the same manner as described above. 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 Build the member (S10). For example, in the continuous wall construction area B of FIG. 1B, the second wall member 12b and the first wall member 11c are built in order.

Next, as in the first wall member 11c of FIG. 1B, the protective pipe 20 is inserted into the internal cavity 15a of the female joint that has not been constructed to prevent the intrusion of excavated earth and sand (S11). The first wall member 11c and the protective pipe 20 may be built together. Then, as the predetermined time elapses, the soil cement in the area B of FIG. 1B solidifies (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 further connected by a fitting joint. To. Further, when the construction of the adjacent area is performed (S13), the process is moved to the adjacent area and the same steps are repeated from the above step S06.

As described above, the first wall members 11a, 11b, 11c, ... And the second wall members 12a, 12b, ... Are continuously connected by a fitting joint filled with soil cement. Walls can be built underground.

Next, with reference to FIGS. 1 to 6, each step S21 to S27 (FIG. 5) of the fitting joint construction will be described. After the soil cement stirring step S07 of FIG. 4, as shown in FIG. 2 (a). , The vibrator 30 is inserted into the protective pipe 20 in the internal cavity 15a of the first wall member 11b of FIGS. 1A and 1B (S21).

As shown in FIGS. 2A to 2C, when the tip 31 of the vibrator 30 comes into contact with the lid 22 of the tip 21 of the protective pipe 20, the lid 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), but is inside by the vibrating portion 32 of the vibrator 30. Vibration is applied to the soil cement in the cavity 15a (S23). As a result, the inflow of soil cement SC into the internal cavity 15a is promoted.

The detection sensor 33 operates at the start of vibration by the vibrating portion 32 of the vibrator 30 described above to detect the presence or absence of soil cement (S24). When the detection sensor 33 does not detect the soil cement, the vibrator 30 continues to vibrate in the same state without pulling up the vibrator 30.

When the detection sensor 33 detects the soil cement SC in the detection step S24, the protective pipe 20 is pulled upward and the vibrator 30 is pulled upward by a predetermined height H as shown in FIGS. 6A and 6B. S25).

By pulling up the protective pipe 20 described above, the cleaning brushes 34 and 35 inside the protective pipe 20 expand in the internal cavity 15a as shown in FIG. 3 (b), and by pulling up the vibrator 30, the cleaning brushes 34 and 35 Moves relative to the inner peripheral surface of the inner cavity 15a to remove fragile soil cement, earth and sand, and other deposits adhering to the inner peripheral surface of the inner cavity 15a.

The predetermined height H for pulling up the vibrator 30 in the step S25 is preferably adjusted to the filling height of the soil cement SC, but specifically, it is, for example, about 50 cm. Further, the pulling height of the protective pipe 20 is set to such that the cleaning brushes 34 and 35 can be removed from the protective pipe 20 and expanded in the internal cavity 15a as shown in FIG. 6A at the first time. , The height H of the raising of the vibrator 30 may be substantially the same as the predetermined height H.

Further, by pulling up the protective pipe 20 by a predetermined height prior to raising the predetermined height H of the vibrator 30, the vibrator 30 can be surely pulled up, and the cleaning brushes 34 and 35 are the protective pipes. It does not enter the inside of the 20 and does not interfere with the cleaning of the inner peripheral surface of the internal cavity 15a.

Next, it is confirmed whether or not the depth position of the vibrator 30 has reached the top end of the wall member (S26), and if not, the process returns to the vibration step S23, and as shown in FIG. 6B, the soil is similarly formed. Vibration is applied to the cement SC, and the same steps S24 to S26 are repeated, and when the vibration is reached, the vibration by the vibrator 30 is completed (S27). Next, steps S09 and S10 of FIG. 4 described above are continued.

According to the fitting joint construction method according to the present embodiment, the vibrator 30 applies vibration to the fluid soil cement in the internal cavity 15a of the female joint in a state where the first wall member is built. As a result, the soil cement can easily move downward and is densely filled in the internal cavity 15a, the filling property is improved, and good water stopping property can be exhibited after solidification.

In addition, the detection sensor 33 detects the presence or absence of soil cement in the internal cavity 15a, and controls the raising of the vibrator 30 based on the detection result, thereby ensuring a solid filling of the soil cement in the internal cavity 15a. It can be carried out. When the soil cement is not detected by the detection sensor 33, the pulling up of the vibrator 30 is stopped and the vibration by the vibrator 30 is continued to surely eliminate the unfilled portion of the solidifying material in the internal cavity and fill the solidifying material densely. be able to.

Further, 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, special stability as in Patent Documents 1 to 3 is obtained. No liquid, injection means, or vibration means is required. Since the cleaning brushes 34 and 35 remove fragile soil cement, earth and sand, and other deposits adhering to the inner peripheral surface of the inner cavity 15a, water paths are generated at the boundary between the old and new soil cement near the inner peripheral surface of the inner cavity 15a. This can be prevented and the 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 can be made within the scope of the technical idea of the present invention. For example, in the present embodiment, ground excavation is performed in an area adjacent to the first wall member in the built-in state, soil cement is agitated at the excavation position, and soil cement is placed in a female joint adjacent to the area. The second wall member was built after being filled, but the present invention is not limited to this, and a solidifying material such as soil cement is directly put into the female joint of the first wall member in the built state. Then, vibration is applied with a vibrator and the detection sensor confirms that there is no unfilled portion of the solidifying material, and then the male joint of the second wall member is inserted into the female joint of the first wall member. The wall member of 2 may be built. In this case, the protective pipe can be omitted.

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

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

Further, in the present embodiment, a continuous wall constructed by a steel underground continuous wall construction method is targeted, but the present invention is not limited to this, and a continuous wall structure such as a sheet pile connected by a fitting joint may be used. ..

According to the fitting joint construction method of the present invention, the filling property is improved in the fitting joint between the wall members to which the fluid solidifying material is filled and connected, and the solidifying material is densely filled and good stopping after solidification. Since it can exhibit water-based properties, the water-stopping property is improved in the continuous wall structure to be constructed, 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 sensor 34, 35 Cleaning brush 36 Wire A, B Continuous wall construction area SC Soil cement

Claims (8)

A method of constructing a fitting joint in which a first wall member and a second wall member are connected by filling with a fluid solidifying material and solidifying in order to construct a continuous wall structure.
The first wall member has a female joint at the end having an internal cavity filled with the solidifying material.
The second wall member has a male joint at the end to be inserted into the female joint.
A step of inserting a vibrator having a detection sensor capable of detecting a solidifying material into the female joint with the first wall member built in the construction position.
A step of applying vibration to the solidifying material in the female joint by the vibrator, and
A process of detecting the presence or absence of a solidifying material in the female joint by the detection sensor, and
The step of pulling up the vibrator in the female joint and
The step of inserting the male joint of the second wall member into the female joint of the first wall member to form the fitting joint when the second wall member is built is included.
A fitting joint construction method for controlling the pulling up of the vibrator based on the detection result of the solidifying material by the detection sensor. The fitting joint construction method according to claim 1, wherein the vibrator is pulled up by a predetermined height after the solidifying material is detected by the detection sensor. The ground is excavated for the construction of the second wall member in a state where the first wall member is built in the construction position and the protective pipe is inserted in the female joint.
The excavated in-situ earth and sand and the solidifying liquid are stirred and mixed to form a fluid solidifying material, and then the vibrator is inserted into the protective pipe and placed in the female joint.
Next, the fitting joint construction method according to claim 1 or 2, wherein the vibration is performed by the vibrator, the solidifying material is detected by the detection sensor, and then the protective pipe is pulled up by a predetermined height. The protective pipe has a lid at the lower end that can be opened by a force from the upper part.
The fitting according to claim 3, wherein the vibrator is inserted into the protective pipe and abuts on the lid to open the lid, and then is arranged in the female joint through the lower end of the protective pipe. Joint construction method. The vibrator has a cleaning brush that protrudes from the outer peripheral portion thereof toward the inner peripheral surface of the female joint to clean the inner peripheral surface, and is inside the vibrator while being pulled up in the female joint. The fitting joint construction method according to claim 1 or 2, which removes deposits adhering to the peripheral surface. The vibrator has a cleaning brush that protrudes from the outer peripheral portion thereof toward the inner peripheral surface of the female joint to clean the inner peripheral surface.
The cleaning brush is bent and housed in the protective pipe with the vibrator inserted in the protective pipe.
By pulling up the protective pipe, the cleaning brush spreads in the female joint,
The fitting joint construction method according to claim 3 or 4, wherein the cleaning brush removes deposits adhering to the inner peripheral surface while the vibrator is pulled up in the female joint. The vibrator used in the fitting joint construction method according to any one of claims 1 to 6. A protective pipe used in the fitting joint construction method according to claim 3, 4 or 6.

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