Rehabilitation system for existing structures and rehabilitation method for existing structures

Abstract

To provide an existing structure rehabilitation system and an existing structure rehabilitation method that can improve workability of quality inspection of a back-filling material and enable a highly objective quality control.SOLUTION: An existing structure rehabilitation system 10 comprises: a rehabilitation structure 20 installed inside an existing structure 40; and a back-filling material 30 injected between the existing structure and the rehabilitation structure, in which the existing structure and the rehabilitation structure are integrated by curing the backfilling material. The rehabilitation system 10 comprises: a temperature sensor, attached at the rehabilitation structure, that can detect a temperature at which the backfilling material is cured and can transmit a detection result by wireless communication; and an information processing device 44, located outside the existing structure, that records preliminarily acquired data relating to a heat generation temperature when the backfilling material is cured, and records temperature data received from the temperature sensor.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a system and a method for rehabilitating an existing structure, and more particularly to a system and method for rehabilitating an existing structure. Sewer pipes and the rehabilitation structure installed inside it A cylindrical rehabilitation material The present invention relates to a rehabilitation system and method that integrates the above using a time-hardening backfill material.

[0002] Existing structures, such as sewer pipes and box culverts buried underground, inevitably deteriorate over many years of use. For example, sewer pipes not only lose their ability to flow sewage due to deformation and cracks caused by aging, but also cause cavities in the ground when groundwater and soil around the pipes flow into the pipes through cracks, resulting in ground subsidence. Sewer pipes buried underground are also susceptible to the effects of ground movements such as earthquakes, and require some kind of repair at certain times.

[0003] Generally, the lifespan of a sewer pipe is said to be about 50 years, and in recent years, the number of sewer pipes reaching the end of their lifespan has been increasing, making repair work due to aging urgently necessary.

[0004] As a method for rehabilitating deteriorated sewer pipes, for example, Patent Document 1 discloses a method of installing a rehabilitation pipe inside a sewer pipe, which is an existing structure. In this method, a rehabilitation pipe is first installed inside the existing sewer pipe. Next, a backfilling material such as mortar is injected into the gap between the sewer pipe and the rehabilitation pipe through a backfilling material injection port provided in the rehabilitation pipe. The backfilling material hardens with heat generated by a hydration reaction between cement and water, and the hardened backfilling material integrates the sewer pipe and the rehabilitation pipe. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2008-51183 A Summary of the Invention [Problem to be solved by the invention]

[0006] In the above-mentioned construction method, the gap formed between the outer circumferential surface of the rehabilitating pipe and the inner circumferential surface of the existing sewer pipe is sufficiently filled with backfilling material, so that the rehabilitating pipe and the sewer pipe can be firmly integrated. However, if there are cracks in the aging sewer pipe, the backfilling material may leak out of the sewer pipe through the cracks, creating a cavity between the rehabilitating pipe and the sewer pipe, or groundwater may seep in through the cracks, resulting in an insufficient filling state of the backfilling material.

[0007] In order to prevent such problems, after a certain amount of time has passed since the backfill material was filled, workers enter the inside of the rehabilitated pipe and visually check the filling condition of the backfill material through the backfill material injection port, or check the filling condition from inside the rehabilitated pipe using a hammering method, thereby controlling the quality of the backfill material.

[0008] However, the above-mentioned visual inspection and hammering inspection methods require workers to enter the sewer pipes, and the work requires the sewer to be stopped temporarily, which is time-consuming.In addition, visual inspection and hammering inspection require the experience of the worker, and errors occur depending on the experience, so a more objective quality control method was required.

[0009] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a system and method for rehabilitating an existing structure that integrates an existing structure and a rehabilitation structure using backfill material, which can improve the workability of quality inspection of backfill material and enable highly objective quality control. [Means for solving the problem]

[0010] In order to achieve the above object, the present invention provides the sewer pipe The rehabilitation system is Sewer pipes buried between manholes placed at regular intervals Installed inside the A cylindrical rehabilitation material with its axial direction aligned substantially horizontally. and, Said sewer pipe and The rehabilitating material and a backfill material injected between the The backfill material hardens with heat. Said sewer pipe and The rehabilitating material and become one sewer pipe In the rehabilitation system, When the rehabilitating material is installed in a state in which the rehabilitating material is capable of contacting the cover member that closes the through hole for injecting the backfilling material formed at the top of the rehabilitating material, the cover member is capable of contacting the backfilling material when the backfilling material is filled into the through hole. a temperature sensor that is attached and can transmit a detected temperature via wireless communication; Said sewer pipe and storing previously acquired data on the heat generation temperature when the backfilling material hardens, and recording the temperature data received from the temperature sensor. The temperature data is compared with the data on the heat generation temperature to determine whether the filling state and hardening state of the backfilling material are good or bad. An information processing device, 、 the lid member includes a cylindrical socket body fixed to the rehabilitating material, and a lid main body that is inserted into the socket body and is detachable from the socket body, The temperature sensor is attached to the lid body and is detachable from the socket body together with the lid body. It is characterized by:

[0011] According to this configuration, Circular tube-shaped regeneration material The temperature sensor attached to the backfill detects the temperature of the injected backfill material and displays the detection result. sewer pipe The worker receives the information from an external information processing device. sewer pipe The temperature at which the injected backfilling material hardens can be detected while the worker is outside the building. The worker can also check the hardening state of the injected backfilling material by comparing the received temperature data with data on the heat generation temperature at which the backfilling material hardens that has been previously acquired and stored in the information processing device. Rehabilitation materials and sewer pipe It is possible to determine whether the backfill material filled between the sewer pipe It can be confirmed that there are defects such as leakage from cracks in the water. In this way, the quality inspection of the backfill material is carried out by the workers. sewer pipe This can be done by using an information processing device located outside the Rehabilitation materials This eliminates the need to enter the inside of the product to perform the inspection, thereby improving the efficiency of quality inspection. Furthermore, by performing quality control based on the numerical temperature data received from the temperature sensor, quality assessments do not differ from one worker to another, making it possible to implement highly objective quality control. In addition, according to this configuration, a temperature sensor is embedded in a through hole formed in the rehabilitation material, and the temperature of the backfilling material can be directly measured by contacting the temperature sensor with the backfilling material, allowing for more accurate temperature detection.

[0012] Also, as described in claim 2 Change of The regeneration system according to claim 1 、 before The temperature sensor is characterized in that a plurality of temperature sensors are installed at predetermined intervals in the axial direction of the rehabilitating material.

[0013] According to this configuration, the hardening state and filling state of the injected backfill material at each part in the axial direction of the pipe can be appropriately managed by multiple temperature sensors installed at a predetermined interval in the axial direction of the tubular rehabilitation material, and defective parts can be easily detected by comparing the temperature data received from each temperature sensor with the data on the heat generation temperature acquired in advance, thereby improving the workability of quality inspection. In addition, there is no need to take measures such as temporarily blocking the fluid flowing through the existing pipe during the inspection work as in the past, and the inspection work is greatly simplified.

[0016] In order to achieve the above object, the following claims are provided: 3 Described in sewer pipe The rehabilitation method is Sewer pipes buried between manholes placed at regular intervals and installed inside it The tube axis direction is approximately horizontal. Backfilling material is injected between the wall and the backfilling material hardens with heat. Said sewer pipe and The rehabilitating material and become one sewer pipe In the rehabilitation method of A cover member for closing a through hole for injecting backfill material formed at the top of the rehabilitation material in the installed state, A temperature sensor capable of transmitting detection results wirelessly When the backfilling material is filled, the backfilling material is in contact with the backfilling material. The installation process, Said sewer pipe The temperature data transmitted from the temperature sensor is received by an information processing device disposed outside the device, and the received temperature data is compared with previously acquired data regarding the heat generation temperature when the backfilling material hardens, thereby determining the temperature of the backfilling material. Determine whether the filling and hardening conditions are good or bad A process for quality inspection, including fruit, the lid member includes a cylindrical socket body fixed to the rehabilitating material, and a lid main body that is inserted into the socket body and is detachable from the socket body, The temperature sensor is attached to the lid body and is detachable from the socket body together with the lid body. It is characterized by:

[0017] According to this configuration, Circular tube-shaped regeneration material The temperature of the backfill material injected is detected by a temperature sensor attached to the sewer pipe The temperature data is received by an information processing device installed outside the device, and the received temperature data is compared with previously acquired data on the heat generation temperature when the backfilling material hardens, thereby inspecting the hardening state of the injected backfilling material. This allows the quality inspection of the backfilling material to be performed. sewer pipe This can be done by using an information processing device located outside the Rehabilitation materials This eliminates the need to enter the inside of the product to perform the inspection, thereby improving the efficiency of quality inspection. Furthermore, since quality control is performed based on the numerical temperature data received from the temperature sensor, highly objective quality control can be performed. In addition, according to this configuration, the temperature sensor is attached to the lid member that closes the through hole for injecting the backfilling material, and the lid member can simultaneously close the backfilling material injection port and install the temperature sensor, which is excellent in workability. In addition, the temperature sensor can directly measure the temperature of the backfilling material, allowing for more accurate temperature detection.

[0018] Also, claims 4 Described in Change of The method of production is as claimed in claim 3 In the rehabilitating method described in before The temperature sensor is a plurality of sensors penetrating the pipe wall formed at predetermined intervals in the pipe axial direction of the rehabilitating material. The above For each through hole Through the lid member It is characterized by being installed by fitting.

[0019] According to this configuration, the hardening state and filling state of the injected backfill material at each part in the pipe axial direction can be properly managed by the multiple temperature sensors, and defective parts can be easily detected, improving the workability of quality inspection. In addition, after the tubular rehabilitation material is installed, the temperature sensor can be easily installed by the simple work of fitting the temperature sensor into the through hole. Furthermore, there is no need to take measures such as temporarily blocking the fluid flowing through the existing pipe during the inspection work as in the conventional method, and the inspection work is greatly simplified. Effect of the Invention

[0026] The present invention sewer pipe Rehabilitation system and sewer pipe According to the rehabilitation method, Rehabilitation materials The temperature sensor attached to the backfill material that can communicate wirelessly detects the temperature when the backfill material hardens, and transmits the detection result to the sewer pipe The data is received by an external information processing device, so the worker can compare it with previously acquired data on the heat generated when the backfill material hardens, sewer pipe This allows workers to check the hardening and filling status of the backfill material in the area outside the building. Rehabilitation materials It is possible to improve workability by inspecting the quality of the backfill material without entering the building. In addition, it is possible to perform quality control based on the received temperature data of the backfill material, which is information that accurately reflects the hardening state, making it possible to perform highly objective quality control. [Brief description of the drawings]

[0027] [Figure 1] 1 is a cross-sectional view showing a sewer pipe rehabilitation system rehabilitated by a method for rehabilitating an existing structure, which is one embodiment of the present invention. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 4] 5 is an enlarged cross-sectional view of a main area surrounded by a dashed line in FIG. 4. [Diagram 5]FIG. 4 is an explanatory diagram of the rehabilitation pipe installation process. [Figure 6] A cross-sectional view showing the support state of the rehabilitation pipe by the shoring. [Figure 7] FIG. 4 is an explanatory diagram of a through-hole forming step. [Figure 8] FIG. 13 is an explanatory diagram of the backfilling material injection process. [Figure 9] FIG. 11 is an explanatory diagram showing another embodiment of the sewer pipe rehabilitation system. [Figure 10] 13A and 13B are diagrams illustrating another embodiment of the installation state of the temperature sensor. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] The system and method for rehabilitating an existing structure according to the present invention will be described below with reference to Figures 1 to 8. Note that the drawings used in the description of the present invention are schematic diagrams and do not strictly depict the dimensions of each component.

[0029] FIG. 1 is a cross-sectional view showing a rehabilitation system 10 for rehabilitating a sewer pipe (existing pipe) 50, which is an existing structure buried underground, using a method for rehabilitating an existing structure that is one embodiment of the present invention. The sewer pipe 50 is disposed between two manholes 52, 53, which are in communication with each other. The rehabilitation system 10 includes a newly installed tubular rehabilitation material 20, which is a rehabilitation structure installed inside the sewer pipe 50, a backfilling material 30 filled between the sewer pipe 50 and the rehabilitation material 20, a cover member 34 that closes the injection port of the backfilling material 30, a temperature sensor 40 that is attached to the cover member 34 and capable of wireless communication, and an information processing device 44. The sewer pipe 50, the rehabilitation material 20, and the backfilling material 30 are integrated to form a rehabilitation pipe.

[0030] The rehabilitating material 20 is installed inside the sewer pipe 50 so as to cover the inner wall surface of the sewer pipe 50. As shown in Fig. 5, the rehabilitating material 20 is formed into a tubular shape by spirally winding a long strip-shaped member (profile) 22. In Fig. 5, a part of the strip-shaped member 22 is indicated by a two-dot chain line. Fig. 2 is a cross-sectional view of the strip-shaped member 22, showing a cross-sectional view of the strip-shaped member 22 cut in the width direction. The strip-shaped member 22 comprises a strip-shaped main body 23 and a sealing member 28, and is flexible.

[0031] The main body 23 can be formed of synthetic resin such as hard polyvinyl chloride (PVC). One side of the main body 23 is provided with a plurality of protruding ribs 24, 25, 26 spaced apart in the width direction. Each of the ribs 24, 25, 26 extends long along the length of the main body 23. The rib 24 formed at one end of the main body 23 in the width direction and the rib 26 formed at the other end are fitted together so as to be connected to each other when the belt-shaped member 22 is spirally wound to form a tubular shape. In the following description, the rib 24 at one end is also referred to as the "male rib 24" and the rib 26 at the other end is also referred to as the "female rib 26."

[0032] The male rib 24 is provided at its tip with a mating protrusion 24a having a generally circular cross section. The female rib 26 has a groove 26a into which the mating protrusion 24a can be fitted. The opening of the groove 26a is formed to be narrow. As shown by the imaginary line in Fig. 2, the female rib 26 of the belt-shaped member 22 wound in a spiral shape is press-fitted into the groove 26a.

[0033] The rib 25 provided between the male rib 24 and the female rib 26 has a substantially T-shaped cross section. In the illustrated example, three ribs 25 are arranged, but the number of ribs 25 is not limited to this and is appropriately set according to the width dimension of the main body 23. An inclined portion 27 is formed in an area on the outer side in the width direction of the female rib 26, facing diagonally outward. The tip of the inclined portion 27 abuts against the T-shaped corner of the rib 25 adjacent to the male rib 24.

[0034] A seal member 28 for preventing the intrusion of water and the like is attached to the flat surface of the main body 23 between the male rib 24 and the adjacent rib 25. The seal member 28 can be made of an elastic material such as rubber or elastomer, and is formed in a strip shape extending long along the length of the main body 23. In this embodiment, when the male rib 24 and the female rib 26 of the spirally wound strip-shaped member 22 are fitted together, the seal member 28 is pressed against the flat surface of the main body 23 overlapping the strip-shaped member 22 in the thickness direction by the pushing reaction force of the inclined portion 27.

[0035] The backfilling material 30 is made of a material that has fluidity when injected and hardens over time, and can be, for example, mortar or concrete. In this embodiment, non-shrink mortar that is less likely to expand or shrink due to heat is used as the backfilling material 30. After being injected, the backfilling material 30 hardens while generating heat due to a hydration reaction, which is a chemical reaction.

[0036] As shown in Figures 3 and 4, the lid member 34 is a member that closes the through holes 21 that are injection ports for the backfilling material 30 formed in the rehabilitating material 20. The lid member 34 preferably has the same strength as the strip-shaped member 22, and can be made of a synthetic resin such as polyvinyl chloride (PVC). As shown in Figures 3 and 4, in this embodiment, a plurality of through holes 21 are formed at predetermined intervals in the pipe axial direction in the wall surface on the vertical upper side (ground side) of the rehabilitating material 20, and the lid member 34 is fitted and installed in each of the through holes 21.

[0037] As shown in FIG. 4, the lid member 34 includes a socket body 36 that is fitted into the through hole 21, which is an injection port, and a lid main body 38 that is inserted and installed in the socket body 36 to close the through hole 21. The socket body 36 is hollow and tubular, and has a cross-sectional shape that conforms to the shape of the through hole 21. In this embodiment, the socket body 36 is formed into a cylindrical shape with a circular cross section so as to fit the through hole 21, which has a circular cross section. The socket body 36 has a flange portion 36a that protrudes radially outward at one end, and this flange portion 36a abuts against the inner wall surface of the rehabilitating material 20 in the installed state. The socket body 36 can be joined to the rehabilitating material 20 using an adhesive or the like.

[0038] The lid body 38 has a cylindrical insertion portion 38a that is inserted into the socket body 36, and a seat portion 38b provided on one end side of the insertion portion 38a. The seat portion 38b is a portion that protrudes radially outward at the end of the insertion portion 38a, and abuts against the flange portion 36a in the installed state. A temperature sensor 40 is attached to the tip end of the insertion portion 38a (the end opposite to the end where the seat portion 38b is formed). In this embodiment, the temperature sensor 40 is disposed inside a recess formed at the tip end of the insertion portion 38a.

[0039] The lid member 34 may not have the socket body 36. In this case, the insertion portion 38a of the lid body 38 is formed to have substantially the same outer shape as the through hole 21 and is fitted into the through hole 21. In this embodiment, the socket body 36 is provided, so that the lid body 38 to which the temperature sensor 40 is attached is detachable from the socket body 36. As shown by the imaginary line in FIG. 4, the lid body 38 may have a space 38c therein. By providing the space 38c in this manner, the wireless communication state of the temperature sensor 40 can be improved.

[0040] The temperature sensor 40 has a sensor for detecting temperature, and also has a built-in wireless communication circuit for wirelessly communicating detected temperature data to the outside, and a battery for driving the wireless communication circuit. The temperature sensor 40 is preferably thin, for example, in the form of a thin plate or sheet. As shown in FIG. 4, the temperature sensor 40 can measure the temperature of the backfilling material 30 over time by contacting the backfilling material 30 with the lid member 34 installed. In the rehabilitation method of this embodiment, heat is generated by a hydration reaction when the backfilling material 30 hardens, and the temperature of the heat is measured by the temperature sensor 40. The temperature sensors 44 are attached to each lid member 34, and thus a plurality of temperature sensors 44 are installed at predetermined intervals in the axial direction of the rehabilitation material 20. The detection results of the temperature sensor 40 can be transmitted to the information processing device 44 by wireless communication.

[0041] The information processing device 44 is a device capable of receiving the detection results of each temperature sensor 40 via wireless communication. The information processing device 44 is configured to include, for example, an operation means such as an operation panel or switch buttons, a display means such as a monitor screen, as well as an information processing means such as a CPU, a storage means such as a RAM or ROM, an input / output interface, and a microcomputer. For example, a personal computer or a tablet terminal owned by the worker 90 can be used as such information processing device 44.

[0042] In this embodiment, the storage means of the information processing device 44 stores previously acquired data on the heat generation temperature when the backfilling material 30 hardens. Such data on the heat generation temperature can be acquired in advance by conducting experiments or the like. In addition, the storage means of the information processing device 44 can record the temperature data received from each temperature sensor 40.

[0043] Next, a method for rehabilitating the sewer pipe 50 using the above-described rehabilitation system 10 will be described.

[0044] First, as shown in Fig. 5, a tubular rehabilitating material 20 is installed inside a sewer pipe 50 (rehabilitating material installation process). A strip-shaped member 22 forming the rehabilitating material 20 is transported to the construction site while wound around a rotating drum 78, and is fed into the sewer pipe 50 from the rotating drum 78 arranged on the ground through one of the manholes 52. The rehabilitating material 20 is installed using a self-propelled pipe-making machine 70 introduced into the sewer pipe 50. The pipe-making machine 70 has a forming frame and a joining mechanism part arranged on the forming frame. The pipe-making machine 70 is driven by a hydraulic unit 72 that provides power. Electricity is supplied to the hydraulic unit 72 from a power source vehicle 76 arranged on the ground.

[0045] The forming frame of the pipe making machine 70 is a frame body that contacts the inner wall surface of the spirally wound belt-shaped member 22, and is formed in a cylindrical shape so that the rehabilitated material 20 has a substantially circular cross-sectional shape that conforms to the shape of the inner wall surface of the sewer pipe 50. The belt-shaped member 22 is wound around this forming frame along the outer circumferential surface, so that the belt-shaped member 22 is formed into a tubular shape with a circular cross-section. The joining mechanism engages the female rib 26 and the male rib 24 of the spirally wound belt-shaped member 22. The belt-shaped member 22 is wound so that the ribs 24, 25, and 26 are located on the outer circumferential surface side of the rehabilitated material 20. In this method of forming the rehabilitated material 20 using the belt-shaped member 22, it is possible to form the rehabilitated material 20 while flowing sewage into the sewer pipe 50.

[0046] Next, as shown in Fig. 6, the rehabilitating material 20 is fixed at a predetermined position of the sewer pipe 50 using a support 60 (support installation process). A plurality of supports 60 are arranged at predetermined intervals in the pipe axial direction of the rehabilitating material 20. The support 60 shown in Fig. 6 includes an octagonal frame member 62, rod-shaped supports 64 extending radially from each side of the frame member 62, a wale-raising member 66 attached to the tip of the support 64, and a rod-shaped reaction member 68 extending vertically upward from the upper side of the frame member 62. The frame member 62 is configured to be expandable and contractable in diameter. The reaction member 68 penetrates the rehabilitating material 20 and has its tip abutting the inner wall of the sewer pipe 50. The rehabilitating material 20 is pressed from the inside to the outside in the radial direction by the wale-raising member 66 of the support.

[0047] The structure of the support 60 is not limited to this, and may be any structure capable of supporting the rehabilitated material 20 so as to prevent the rehabilitated material 20 from floating up or deforming in the backfilling material injection process described later. The support 60 can be installed in the area where the rehabilitated material 20 is formed while the rehabilitated material 20 is being formed, or may be installed after the rehabilitated material 20 is installed over the entire area of ​​the sewer pipe 50. Alternatively, instead of the support 60 or simultaneously with the support 60, a heavy chain may be placed inside the rehabilitated material 20 along the pipe axis direction to prevent the rehabilitated material 20 from floating up due to sewage. For example, when the inner diameter of the sewer pipe 50 is relatively small, the bottom wall of the rehabilitated material 20 can be pressed against the sewer pipe 50 by the chain without using the support 60, and the rehabilitated material 20 can be prevented from floating up due to sewage or the backfilling material 30, so that the rehabilitated material 20 can be held at a predetermined position in the sewer pipe 50.

[0048] Next, as shown in Fig. 7, through holes 21 that serve as injection ports for the backfilling material 30 are formed in the rehabilitating material 20 (through hole forming process). A plurality of through holes 21 are formed at predetermined intervals in the axial direction of the rehabilitating material 20. In Fig. 7, two through holes 21 are formed, but the number of through holes is not limited to this and can be three or more. The through holes 21 can be formed using a drilling tool (not shown) such as a hole saw.

[0049] Next, as shown in FIG. 8, the backfilling material 30 is injected into the gap S (see FIG. 6) between the rehabilitating material 20 and the sewer pipe 50 (backfilling material injection process). The backfilling material 30 is generated in a backfilling material plant 82 mounted on a vehicle 80 placed on the ground. The generated backfilling material 30 is supplied into the sewer pipe 50 through a supply pipe 84 connected to the backfilling material plant 82, as shown by the arrow in FIG. 8, and is injected into the gap S through the through hole 21 from a nozzle 86 of the supply pipe 84. In this embodiment, the backfilling material 30 is injected into the gap S between one end of the rehabilitating material 20 and the sewer pipe 50 through the supply pipe 84 together with the through hole 21. The backfilling material 30 overflowing from the gap S is discharged to the outside of the gap S from an overflow pipe 88 connected to the gap S at the other end side of the rehabilitating material 20.

[0050] Next, the temperature sensor 40 is attached to the rehabilitating material 20 (temperature sensor attachment process). As shown in Fig. 1, in this embodiment, after the gap S is filled with the backfilling material 30, the through hole 21 is blocked with the cover member 34 and the support 60 is removed. As described above, since the temperature sensor 40 is attached to the cover member 34, the temperature sensor 40 is attached to the rehabilitating material 20 by fitting and installing the cover member 34 in the through hole 21.

[0051] Next, a quality inspection of the backfilling material 30 is performed based on the temperature data acquired by the temperature sensors 40 (inspection process). Specifically, the temperature of each part of the backfilling material 30 in the pipe axial direction is measured over time by each temperature sensor 40. The detection results of each temperature sensor 40 are transmitted via wireless communication to an information processing device 44 that is located on the ground outside the sewer pipe 50. After receiving the temperature data from each temperature sensor 40, the information processing device 44 compares the received temperature data with data related to the heat generation temperature of the backfilling material 30 stored in the storage means, and performs a quality inspection of the backfilling material 30.

[0052] In this embodiment, the temperature sensor 40 and the information processing device 44 measure the temperature change of the backfilling material 30 over time and compare it with existing data on the heat generation temperature, thereby inspecting the hardening state and filling state of the backfilling material 30. Specifically, the temperature sensor 40 detects an appropriate temperature rise of the backfilling material 30, thereby making it possible to confirm that the backfilling material 30 has hardened by a hydration reaction. In addition, if no temperature rise is detected in the data acquired from the temperature sensor 40, it is possible to detect a defect. For example, if the backfilling material 30 leaks from a crack that has occurred in the sewer pipe 50, or if groundwater has entered the crack and the hardening reaction has not been sufficiently carried out, the temperature does not rise, so that it is possible to detect a defect. In this way, by performing an inspection based on information that accurately reflects the hardening state, namely the temperature data of the backfilling material 30, it is possible to perform highly objective quality control. In addition, since a plurality of temperature sensors 40 are set at intervals in the axial direction of the rehabilitating material 20, it is possible to detect the presence or absence of a defect in each area where the temperature sensor 40 is installed.

[0053] Such quality inspection of the backfilling material 30 based on temperature may be performed automatically to determine whether the quality is good or bad (whether there are any defects in the backfilling material 30) based on a quality inspection program preset in the information processing device 44, or the worker 90 may compare and examine the data based on preset criteria to determine whether the quality is good or bad.

[0054] The period for acquiring temperature data by the temperature sensor 40 may be, for example, 1 to 2 days. After a certain curing period, the backfilling material 30 hardens, and the sewer pipe 50 and the rehabilitation material 20 are integrated. By acquiring temperature data periodically thereafter, it is possible to check for leakage of the backfilling material 30 over the long term.

[0055] As described above, in the rehabilitation system 10 and rehabilitation method of this embodiment, the temperature of the backfill material 30 is detected by the wireless temperature sensor 40, and the detection result can be received by the information processing device 44 outside the sewer pipe 50, so that the worker 90 can check the hardening state and filling state of the backfill material 30 while in an area outside the sewer pipe 50 (for example, on the ground). This saves the worker 90 the trouble of entering the rehabilitating material 20 to perform the inspection work, and there is no need to take measures such as temporarily blocking the sewage flowing through the sewer pipe during the inspection work as in the past. Therefore, the inspection work is greatly simplified, and the workability of the quality inspection can be improved.

[0056] Furthermore, by comparing the temperature data received from each of the multiple temperature sensors 40 installed in the axial direction of the pipe with previously acquired data on heat generation temperature, the location of the defect can be easily detected. If a defect is detected, the worker 90 needs to enter the rehabilitating material 20 to conduct a detailed inspection, but by installing multiple temperature sensors 40, the location of the defect can be easily identified, and the time that the worker 90 needs to enter the rehabilitating material 20 for inspection can be shortened.

[0057] Furthermore, in the rehabilitation system 10 and rehabilitation method of the present embodiment, quality inspection can be performed based on the numerical temperature data acquired from the temperature sensor 40, so that inspection evaluation does not vary depending on the worker 90, and highly objective inspection can be performed. In particular, quality control can be performed based on the received temperature data of the backfilling material 30, which is information that accurately reflects the hardening state, so that highly objective quality control can be performed.

[0058] Moreover, the temperature sensor 40 used for the inspection is configured to be installed by fitting it into the through hole 21 formed in the rehabilitation material 20, and therefore the installation work is easy. In particular, in this embodiment, the temperature sensor 40 is attached to the cover member 34 that closes the injection port of the backfilling material 30, so that the temperature sensor 40 can be installed at the same time as the injection port is closed, and this provides excellent workability.

[0059] Furthermore, in this embodiment, since the temperature sensor 40 can be brought into contact with the backfilling material 30 to directly measure the temperature of the backfilling material 30, more accurate temperature detection can be performed.

[0060] Furthermore, in this embodiment, the lid body 38 on which the temperature sensor 40 is attached is configured to be detachable from the socket body 36 fixed to the rehabilitation material 20. Therefore, in the event of a malfunction, the lid body 38 can be removed and the filling state and hardening state of the backfilling material 30 can be easily checked through the through hole 21.

[0061] In this embodiment, the temperature sensor 40 is installed in the vertical upper region of the rehabilitating material 20 where sewage does not usually flow. The temperature sensor 40 is preferably installed within a circumferential range of 60 degrees from the vertical upper apex of the rehabilitating material 20, more preferably within a 45 degree range, and even more preferably within a 15 degree range. In addition to the upper region, the temperature sensor 40 may be installed in the bottom wall region where sewage flows, to measure the temperature change in each region. In this case, the surface temperature of the backfill material 30 differs between a state where the temperature sensor 40 is above the sewage water surface and a state where the rehabilitating material 20 is below the sewage water surface and is cooled by the sewage, so that the temperature rise value that serves as the standard for quality inspection can be changed for each region based on the experimental results obtained in advance in a laboratory.

[0062] Next, another embodiment of the rehabilitation system will be described. FIG. 9 is a diagram for explaining another embodiment of the rehabilitation system 10 for a sewer pipe 50. In the embodiment shown in FIG. 9, the same components as those in the above-mentioned embodiment are given the same reference numerals. In this embodiment, in the rehabilitation material installation process, a steel ring 210 that serves as the framework of the rehabilitation structure is assembled inside the sewer pipe 50. A plurality of ring members 210 are installed at intervals in the pipe axial direction, and each ring 210 is connected by a connecting member. Then, a pipe rehabilitation member 212 made of high-density polyethylene, which is a surface member that forms the surface of the newly installed tubular rehabilitation member 20, and a fitting member 214 that connects the pipe rehabilitation member 212 are assembled inside the ring 210. When installed, the length direction of the pipe rehabilitation member 212 is oriented in the pipe axial direction of the rehabilitation material 20, and the width direction is oriented in the circumferential direction of the rehabilitation material 20. The multiple pipe rehabilitation members 212 are arranged in an annular shape in the circumferential direction of the rehabilitation material 20, and adjacent pipe rehabilitation members 212 are connected by fitting members 214. Note that, in Fig. 9, multiple long plate-shaped pipe rehabilitation members 212 are arranged in the circumferential direction of the sewer pipe 50 to form a tubular body that becomes the rehabilitation material 20, but this is not limited thereto, and the rehabilitation material 20 may be formed by arranging cylindrical pipe rehabilitation members 212 in the pipe axial direction of the sewer pipe 50.

[0063] In this embodiment, the temperature sensor 40 is attached to the outer surface of the pipe rehabilitation member 212, which is the outer peripheral surface of the rehabilitation material 20, when the pipe rehabilitation member 212 is assembled (temperature sensor attachment process). A plurality of temperature sensors 40 are installed at predetermined intervals in the length direction of the long plate-shaped surface member 212 on the pipe rehabilitation member 212 that forms the surface on the vertical upper side of the rehabilitation material 20 (temperature sensor attachment process). The temperature sensor 40 can be attached to the surface of the pipe rehabilitation member 212 using an adhesive or the like. The backfill material 30 is injected into the gap between the rehabilitation material 20 and the sewer pipe 50 after the rehabilitation material 20 is installed. Note that in the embodiment shown in FIG. 1, the temperature sensor 40 may be attached to the surface of the band-shaped member 22 that forms the outer surface of the rehabilitation material 20 when the band-shaped member 22 is introduced into the sewer pipe 50. In this case, by attaching a plurality of temperature sensors 40 at predetermined intervals in the length direction of the band-shaped member 22, the temperature of each part in the pipe axis direction of the sewer pipe 50 can be detected.

[0064] In this manner, the temperature sensor 40 may be configured to be installed in the rehabilitation material 20 before the backfill material 30 is injected. In this embodiment, the temperature sensor 40 can be attached to the surface member 212 outside the sewer pipe 50, so that the installation work is easy and the workability is excellent.

[0065] Next, another embodiment of the installation mode of the temperature sensor 40 will be described with reference to FIG. 10. FIG. 10 is a perspective view of the pipe rehabilitation member 212 constituting the rehabilitation material 20 in the rehabilitation system 10 shown in FIG. 9. In this embodiment, the temperature sensor 40 is embedded inside the pipe rehabilitation member 212 constituting the rehabilitation material 20. The pipe rehabilitation member 212 has a substantially rectangular plate-shaped main body and a pair of ribs protruding from both sides in the width direction of the main body, and the temperature sensor 40 is built into the main body. Note that a plurality of temperature sensors 40 may be embedded at predetermined intervals in the length direction of the pipe rehabilitation member 212. It is preferable that the temperature sensor 40 is embedded in the main body 213 of the strip-shaped member 212 near the outer peripheral surface that contacts the backfill material 30. In this way, since the temperature sensor 40 is built into the strip-shaped member 22 constituting the rehabilitation material 20 in advance, it is possible to eliminate the effort of attaching the temperature sensor 40 to the rehabilitation material 20 at the construction site, and the work time can be shortened. 1, the temperature sensor 40 may be embedded in the main body 23 of the belt-shaped member 22 forming the rehabilitating material 20. In this case, by embedding a plurality of temperature sensors 40 at predetermined intervals in the longitudinal direction of the belt-shaped member 22, it is possible to detect the temperature of each portion of the sewer pipe 50 in the axial direction.

[0066] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the invention.

[0067] For example, in the above-described embodiment, a rehabilitation material with a circular cross-section is installed on an existing pipe with a circular cross-section, but the pipe shapes of the existing pipe and the rehabilitation material are not limited to this, and the cross-sectional shape may be rectangular, elliptical, etc.

[0068] In addition, the rehabilitation system and rehabilitation method according to the present invention can be widely applied to systems and methods for constructing composite pipes in which the rehabilitation material, which is made of rehabilitation material and backfill material, and the existing pipe are structurally integrated to have load-bearing performance and durability performance equal to or greater than that of the rehabilitation material. For example, as in the above-mentioned embodiment, it can be applied to the SPR method (registered trademark) and the Tamby method, in which a belt-shaped member called a profile is wound in a spiral shape to form a rehabilitation material. It can also be applied to the SW Liner method, in which a belt-shaped member made of hard polyvinyl chloride, called a strip, is wound in a spiral shape in a manhole to form a tubular body, and this tubular body is extruded into the existing pipe to form the rehabilitation material. It can also be applied to the Partem Flooring method, in which rings are assembled in the existing pipe to form a framework, and a pipe rehabilitation member and a fitting member are assembled on the surface of the ring member in the pipe axial direction to form the rehabilitation material, as in the embodiment shown in FIG. 9. It can also be applied to the Clearflow (registered trademark) method, in which a rehabilitation material is formed from a pipe rehabilitation member made of high-density polyethylene with a reinforcing steel attached to the back, and an inorganic polymer cement filler is used as the backfill material. It can also be applied to the PFL method, in which a carbon fiber reinforcing material or an aramid fiber reinforcing material is attached to the inside of an existing pipe, and a polyethylene pipe rehabilitation member with a protrusion on the back is placed on the inside side to form a rehabilitation material. It can also be applied to the String (registered trademark) method, in which a pipe rehabilitation member made of high-density polyethylene and a fitting material (fastener) are assembled inside an existing pipe to form a rehabilitation material.

[0069] Furthermore, for example, the existing structure to be rehabilitated is not limited to the sewer pipe 50, but may be an existing drinking water pipe, an agricultural water pipe, an industrial pipe, a box culvert, or the like. [Explanation of symbols]

[0070] 10 Rehabilitation System 20 Rehabilitation materials (rehabilitation structures) 22 Belt-shaped member 30 Backfill material 34 Lid member 40 Temperature Sensor 44 Information processing equipment 50 Sewer pipes (existing structures) 52,53 Manhole 60 Shoring 70 Pipe making machine 90 Workers

Claims

1. A cylindrical rehabilitation material that is installed inside a sewer pipe buried between manholes installed at a predetermined interval and has a pipe axis direction substantially horizontally arranged; A backfill material is injected between the sewer pipe and the rehabilitation material, In a sewer pipe rehabilitation system, the backfill material is heated and hardened to integrate the sewer pipe with the rehabilitation material, a temperature sensor that is attached to a cover member that closes a through hole for injecting backfilling material formed at the top of the rehabilitation material when the rehabilitation material is installed in a state where it can come into contact with the backfilling material when the backfilling material is filled, and that can transmit a detected temperature by wireless communication; an information processing device that is disposed outside the sewer pipe, stores previously acquired data on the heat temperature generated when the backfilling material hardens, records temperature data received from the temperature sensor, and compares the temperature data with the data on the heat temperature to determine whether the filling state and hardening state of the backfilling material are good or bad; the lid member includes a cylindrical socket body fixed to the rehabilitating material, and a lid main body that is inserted into the socket body and is detachable from the socket body, The sewer pipe rehabilitation system is characterized in that the temperature sensor is attached to the lid body and is detachable from the socket body together with the lid body.

2. The rehabilitation system as described in Claim 1, characterized in that the temperature sensors are installed at predetermined intervals in the axial direction of the rehabilitation material.

3. A method for rehabilitating a sewer pipe, comprising: injecting backfill material between a sewer pipe buried between manholes installed at a predetermined interval and a cylindrical rehabilitation material installed inside the sewer pipe and oriented substantially horizontally in the axial direction; and hardening the backfill material with heat, thereby integrating the sewer pipe with the rehabilitation material, a step of attaching a temperature sensor capable of transmitting detection results by wireless communication to a cover member that closes a through hole for injecting backfilling material formed at the top of the rehabilitation material in an installed state, in a state in which the temperature sensor can come into contact with the backfilling material when the backfilling material is filled; receiving temperature data transmitted from the temperature sensor by an information processing device disposed outside the sewer pipe, and comparing the received temperature data with previously obtained data on the heat generation temperature when the backfilling material hardens, thereby performing a quality inspection to determine whether the filling state and hardening state of the backfilling material are good or bad; the lid member includes a cylindrical socket body fixed to the rehabilitating material, and a lid main body that is inserted into the socket body and is detachable from the socket body, The method for rehabilitating a sewer pipe, wherein the temperature sensor is attached to the lid body and is detachable from the socket body together with the lid body.

4. The rehabilitation method described in Claim 3, characterized in that the temperature sensor is installed by fitting it into each of a plurality of through holes that penetrate the pipe wall formed at a predetermined interval in the pipe axial direction of the rehabilitation material, via the cover member.

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