Analysis method for monitoring stress of tunnel inverted arch steel coupling

Abstract

The application relates to the technical field of building construction, and discloses an analysis method for monitoring the stress coupling of tunnel inverted arch steel bars, which comprises an overall external mechanism, and the overall external mechanism further comprises an overall shell. The application fully utilizes the lever mode. When a power motor rotates, a supporting movable rod contacts an overall limiting frame, and the overall limiting frame swings, so that a supporting piston block absorbs liquid in the overall shell and transmits the liquid to the inside of a detection shell, the detection telescopic rod expands outward, and pressure is generated when the detection telescopic rod contacts the external steel bar, so that detection data is provided for subsequent detection. When the detection telescopic rod contacts the steel bar, the contact force is directly fed back to the pressure receptor. At this time, the pressure directly acts on the outer wall of the pressure receptor, so that the pressure limit of the coupling position between the soft foundation steel pipe and the inverted arch steel bar can be monitored in real time.

Description

Technical Field

[0001] This invention relates to the field of equipment technology in building construction, specifically to an analytical method for monitoring the coupled stress of steel reinforcement in tunnel inverts. Background Technology

[0002] In tunnel construction, the grouting steel pipe and the upper invert arch steel mesh can share the load after being connected. The grouting method of the grouting steel pipe and its connection method and connection quality with the upper invert arch steel mesh directly affect the load distribution of the joint. Therefore, it is necessary to study the grouting process of the steel pipe and the connection process between the steel pipe and the invert arch steel mesh.

[0003] Currently available testing devices are too large. When transporting large equipment, they can easily cause deformation of steel pipes and reinforcing bars inside the tunnel, affecting the use of materials and the testing results. They are also subject to significant limitations during handling. In addition, most of the stress testing devices currently used employ an outward-pushing design to achieve the testing effect. However, this design can easily lead to deformation of the steel after the test, increasing the difficulty of later maintenance. The pressure borne by the connection between the external soft-base steel pipe, the inverted arch reinforcing bars, and the bottom cement is also a major standard for testing coupled stress. The testing effect can be achieved by testing the pressure borne between the cement and the steel pipe. In response to the above problems, the following solutions are proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an analysis method for monitoring the coupled stress of the reinforcing steel bars in a tunnel invert. The analysis method for stress monitoring includes the following steps:

[0005] Step 1: Data Acquisition: Data is collected on the invert arch reinforcement using a stress detection device; stress data is acquired by sensors, continuously collected and recorded.

[0006] Step 2: Data Analysis: The system program processes and analyzes the collected stress data, including the magnitude of the force, the direction of the force, and the trend of force changes.

[0007] Step 3: Result Evaluation: Based on the data analysis results, evaluate the coupling stress between the steel pipe in the soft soil foundation of the tunnel and the invert arch reinforcement, including potential stress concentration areas and stress anomalies;

[0008] Step 4: Alarms and Warnings: When the monitoring results exceed the preset threshold, an alarm and warning mechanism will be automatically triggered to promptly remind relevant personnel to take measures.

[0009] The force monitoring device includes an overall external mechanism, which also includes an overall shell. The outer wall of the overall shell has several overall external grooves, and the bottom outer wall of the overall shell has several overall side grooves. This overall external mechanism provides an installation position for subsequent mechanisms and plays a stabilizing role during operation, counteracting the shaking and vibration generated during the operation of the mechanism, ensuring the normal operation of the equipment, and avoiding problems such as bumps.

[0010] The bottom support mechanism includes a support housing fixedly connected to the outer wall of several integral side grooves, a support receiving groove fixedly connected to the inner wall of the support housing, and a support sliding plate rotatably connected to the inner wall of the support receiving groove.

[0011] The internal testing mechanism includes a testing housing that is slidably connected to the inner wall of several integral outer grooves. The bottom outer wall of the testing housing has testing holes, and a testing slide plate is slidably connected to the outer wall of the testing housing. This device has a simple structure and is smaller in size than other testing devices on the market, making it easier to transport and apply. It reduces the assembly time before use and improves the efficiency of the device.

[0012] Preferably, the overall external mechanism further includes an integral inner plate fixedly connected to the inner wall of the overall outer shell, and a plurality of integral sliding tubes are provided on the outer wall of the integral inner plate. An integral middle shell is fixedly connected to the outer wall of the overall outer shell, and the inner wall of the integral middle shell is fixedly connected to the outer wall of the integral inner plate. The present invention is provided with an overall outer shell, an integral inner plate, and an integral middle shell. The tight fit between the overall outer shell and the integral inner plate increases the stability of the overall external mechanism during operation and helps to reduce the shaking generated by the overall outer shell during operation.

[0013] Preferably, the overall external mechanism further includes an overall central hole formed in the inner wall of the overall middle shell, an overall sliding plate slidably connected to the inner wall of the overall middle shell, an overall small plate fixedly connected to the outer wall of the overall sliding plate, an overall handle fixedly connected to the outer wall of the overall small plate, the outer wall of the overall handle slidably connected to the inner wall of the overall middle shell, and a number of overall small holes formed in the outer wall of the overall sliding plate. By pushing the external overall handle, the overall small holes are aligned with the overall central hole, allowing the liquid inside the overall middle shell to enter the interior of the overall outer shell.

[0014] Preferably, the overall external mechanism further includes a pressure sensor fixedly connected to the inner wall of the overall inner panel, an overall outer frame rotatably connected to the outer wall of the pressure sensor, and a power motor fixedly connected to the back of the outer wall of the overall shell. This power motor provides the operating power for the overall mechanism, driving the rotation of the overall shell and the overall sliding plate within the overall external mechanism, thus achieving the rotational effect.

[0015] Preferably, the overall external mechanism also includes an overall limiting frame fixedly connected to the outer wall of the power motor, an overall support frame fixedly connected to the outer wall of the power motor, several overall rollers rotatably connected to the outer wall of the overall support frame, and an overall outer plate fixedly connected to the outer wall of the overall inner shell. When the power motor is turned on, the overall equipment will generate a rotational movement tendency. With the restriction of the overall outer frame, the power motor is restricted, and the rotational force will rotate towards the overall outer shell, allowing the equipment to move forward with bearings.

[0016] Preferably, the bottom support mechanism further includes a support movable rod rotatably connected to the inner wall of several support housings. A support piston block is fixedly connected to the top of the outer wall of the support movable rod, and a support telescopic plate is slidably connected to the outer wall of the support piston block. Before using the equipment, the external overall handle is pushed to align the overall small hole with the overall central hole, allowing the liquid inside the overall central shell to enter the overall outer shell. The height of the detection telescopic rod is limited in the above manner, thereby limiting the maximum pressure generated by the equipment and avoiding excessive pressure that could damage the reinforcing steel.

[0017] Preferably, the bottom support mechanism further includes a support base plate that is connected through to the inner wall of the overall shell, a support movable bead is provided on the inner wall of the support base plate, and a support outer plate is fixedly connected to the outer wall of the support shell.

[0018] Preferably, the internal detection mechanism also includes a detection hole on the top outer wall of the detection slide plate. A detection top plate is fixedly connected to the top outer wall of the detection slide plate, and a detection spring is fixedly connected to the outer wall of the detection top plate. The end of the detection spring away from the detection top plate is fixedly connected to the outer wall of the detection housing. When the power motor rotates, the support movable rod contacts the overall limiting frame, causing the overall limiting frame to swing. This causes the support piston block to draw liquid from inside the overall housing and transfer it to the inside of the detection housing, causing the detection telescopic rod to expand outward. When the detection outer strip contacts the external steel bar, pressure is generated, providing detection data for subsequent detection.

[0019] Preferably, the internal detection mechanism also includes a detection transmission pipe that runs through the outer wall of the detection housing. The end of the detection transmission pipe away from the detection housing is connected through the outer wall of the support outer plate. A detection telescopic rod is slidably connected to the inner wall of the detection housing. The bottom of the detection telescopic rod is fixedly connected to the outer wall of the pressure sensor. A detection outer belt is fixedly connected to the end of the detection telescopic rod away from the detection housing. When the detection telescopic rod contacts the reinforcing bar, the resulting contact force will be directly fed back to the pressure sensor. At this time, the pressure acts directly on the outer wall of the pressure sensor, thereby achieving real-time monitoring of the pressure limit at the coupling point between the soft foundation steel pipe and the inverted arch reinforcing bar.

[0020] The analytical method for monitoring the coupled stress of the reinforcing steel bars in a tunnel invert, and the method for using the stress monitoring device, include the following steps:

[0021] S1: Before using the device, slide the external handle to align the small hole with the central hole, allowing the liquid inside the central shell to enter the outer shell.

[0022] S2: Place the detection belt on the outer wall of the steel reinforcement and connect the power motor to make the entire shell rotate;

[0023] S3: The bottom of the supporting movable rod rotates with the overall limiting frame, causing the bottom support mechanism and the internal detection mechanism to draw out the liquid inside the overall external mechanism and extend it outward, and to perform a pressure test on the steel bars;

[0024] S4: After the test is completed, press the outer wall of the test slide to make the test telescopic rod slide down and complete the retraction.

[0025] The present invention has the following beneficial effects:

[0026] (1) The present invention makes full use of the lever method. When the power motor rotates, the support movable rod contacts the overall limiting frame and generates the overall limiting frame to swing, so that the support piston block draws the liquid inside the overall shell and transmits it to the inside of the detection shell, so that the detection telescopic rod expands outward and generates pressure when the detection outer strip contacts the external steel bar, providing detection data for subsequent detection.

[0027] (2) In this invention, when the telescopic rod contacts the reinforcing bar, the resulting contact force will be directly fed back to the pressure sensor. At this time, the pressure acts directly on the outer wall of the pressure sensor, thereby achieving real-time monitoring of the pressure limit at the coupling point between the soft foundation steel pipe and the inverted arch reinforcing bar.

[0028] (3) Before using the device, the present invention pushes the external overall handle to align the overall small hole with the overall central hole, so that the liquid inside the overall central shell enters the overall outer shell. The height of the detection telescopic rod is limited by the above method, thereby limiting the maximum pressure generated by the device and avoiding excessive pressure that could damage the steel bars.

[0029] (4) The equipment has a simple structure and is smaller in size than other testing devices on the market, making it easier to transport and use, reducing the assembly time before use and improving the efficiency of equipment use. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1This is an exploded view of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 3 This is a cross-sectional schematic diagram of the overall external structure of the present invention;

[0034] Figure 4 This is a schematic diagram of the bottom support mechanism of the present invention;

[0035] Figure 5 For the present invention Figure 4 Enlarged view of A in the middle;

[0036] Figure 6 This is a cross-sectional schematic diagram of the internal detection mechanism of the present invention;

[0037] Figure 7 For the present invention Figure 6 Enlarged view of B in the middle;

[0038] Figure 8 This is a schematic diagram illustrating the monitoring operation of the present invention.

[0039] The attached diagram lists the components represented by each number as follows:

[0040] In the diagram: 1. Overall external structure; 101. Overall outer shell; 102. Overall outer groove; 103. Overall side groove; 104. Overall inner panel; 105. Overall slide tube; 106. Overall middle shell; 107. Overall central hole; 108. Overall sliding plate; 109. Overall small plate; 110. Overall handle; 111. Overall small hole; 112. Pressure sensor; 113. Overall outer frame; 114. Power motor; 115. Overall limit frame; 116. Overall support frame; 117. Overall roller; 118. Overall outer panel; 2. Bottom Support mechanism; 201, Support shell; 202, Support receiving groove; 203, Support slide plate; 204, Support movable rod; 205, Support piston block; 206, Support telescopic plate; 207, Support base plate; 208, Support movable ball; 209, Support outer plate; 3. Internal detection mechanism; 301, Detection shell; 302, Detection hole; 303, Detection slide plate; 304, Detection small hole; 305, Detection top plate; 306, Detection spring; 307, Detection transmission pipe; 308, Detection telescopic rod; 309, Detection outer belt. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Example 1, please refer to Figure 1 - Figure 3 This invention provides an analysis method for monitoring the coupled stress of the reinforcing steel bars in a tunnel invert. The analysis method for stress monitoring includes the following steps: Step 1: Data acquisition: Data is acquired from the reinforcing steel bars in the invert using a stress detection device; stress data is obtained by using sensors, and the data is continuously collected and recorded.

[0043] Step 2: Data Analysis: The system program processes and analyzes the collected stress data, including the magnitude of the force, the direction of the force, and the trend of force changes.

[0044] Step 3: Result Evaluation: Based on the data analysis results, evaluate the coupling stress between the steel pipe in the soft soil foundation of the tunnel and the invert arch reinforcement, including potential stress concentration areas and stress anomalies.

[0045] Step 4: Alarms and Warnings: When the monitoring results exceed the preset threshold, an alarm and warning mechanism will be automatically triggered to promptly remind relevant personnel to take measures.

[0046] The force monitoring device includes an overall external mechanism 1, which also includes an overall outer shell 101. The outer wall of the overall outer shell 101 has several overall outer grooves 102, and the bottom outer wall of the overall outer shell 101 has several overall side grooves 103. The overall external mechanism 1 provides an installation position for subsequent mechanisms and plays a stabilizing role during operation, counteracting the shaking and vibration generated during the operation of the mechanism, ensuring the normal operation of the equipment, and avoiding problems such as bumps.

[0047] The bottom support mechanism 2 includes a support housing 201 fixedly connected to the outer wall of several integral side grooves 103, a support receiving groove 202 fixedly connected to the inner wall of the support housing 201, and a support slide plate 203 rotatably connected to the inner wall of the support receiving groove 202.

[0048] The internal testing mechanism 3 includes a testing housing 301 that is slidably connected to the inner wall of several integral outer grooves 102. The bottom outer wall of the testing housing 301 has a testing hole 302, and a testing slide plate 303 is slidably connected to the outer wall of the testing housing 301. This device has a simple structure and is smaller in size than other testing devices on the market, making it easier to transport and apply, reducing the assembly time before use, and improving the efficiency of the device.

[0049] The overall external mechanism 1 also includes an overall inner plate 104 fixedly connected to the inner wall of the overall outer shell 101. Several overall sliding tubes 105 are provided on the outer wall of the overall inner plate 104. An overall middle shell 106 is fixedly connected to the outer wall of the overall outer shell 101. The inner wall of the overall middle shell 106 is fixedly connected to the outer wall of the overall inner plate 104. The present invention is provided with an overall outer shell 101, an overall inner plate 104, and an overall middle shell 106. The tight fit between the overall outer shell 101 and the overall inner plate 104 increases the stability of the overall external mechanism 1 during operation and helps to reduce the shaking generated by the overall outer shell 101 during operation.

[0050] The overall external mechanism 1 also includes an overall central hole 107 opened in the inner wall of the overall middle shell 106. An overall sliding plate 108 is slidably connected to the inner wall of the overall middle shell 106. An overall small plate 109 is fixedly connected to the outer wall of the overall sliding plate 108. An overall handle 110 is fixedly connected to the outer wall of the overall small plate 109. The outer wall of the overall handle 110 is slidably connected to the inner wall of the overall middle shell 106. Several overall small holes 111 are opened in the outer wall of the overall sliding plate 108. By pushing the external overall handle 110, the overall small holes 111 are aligned with the overall central hole 107, so that the liquid inside the overall middle shell 106 enters the interior of the overall outer shell 101.

[0051] The overall external mechanism 1 also includes a pressure sensor 112 fixedly connected to the inner wall of the overall inner plate 104. An overall outer frame 113 is rotatably connected to the outer wall of the pressure sensor 112, and a power motor 114 is fixedly connected to the back of the outer wall of the overall outer shell 101. The power motor 114 provides power for the operation of the overall mechanism, driving the overall outer shell 101 and the overall sliding plate 108 in the overall external mechanism 1 to rotate, thereby achieving the effect of rotation.

[0052] The overall external mechanism 1 also includes an overall limiting frame 115 fixedly connected to the outer wall of the power motor 114, an overall support frame 116 fixedly connected to the outer wall of the power motor 114, a number of overall rollers 117 rotatably connected to the outer wall of the overall support frame 116, and an overall outer plate 118 fixedly connected to the outer wall of the overall inner shell 106. When the power motor 114 is turned on, the overall equipment will generate a rotational movement tendency. With the restriction of the overall outer frame 113, the power motor 114 is restricted, and the rotational force will rotate towards the overall outer shell 101, so that the equipment can move forward with the bearing.

[0053] Example 2, please refer to Figure 4 - Figure 8 This invention provides an analytical method for monitoring the coupled stress of the reinforcing steel bars in a tunnel invert. Based on Example 1, the bottom support mechanism 2 further includes a support movable rod 204 rotatably connected to the inner wall of several support shells 201. A support piston block 205 is fixedly connected to the top of the outer wall of the support movable rod 204, and a support telescopic plate 206 is slidably connected to the outer wall of the support piston block 205. Before using the device, by pushing the external overall handle 110, the overall small hole 111 is aligned with the overall central hole 107, allowing the liquid inside the overall central shell 106 to enter the overall shell 101. This method limits the height of the detection telescopic rod 308, thereby limiting the maximum pressure generated by the device and preventing excessive pressure that could damage the reinforcing steel bars.

[0054] The bottom support mechanism 2 also includes a support base plate 207 that is connected through to the inner wall of the overall shell 101. A support movable bead 208 is provided on the inner wall of the support base plate 207, and a support outer plate 209 is fixedly connected to the outer wall of the support shell 201.

[0055] The internal detection mechanism 3 also includes a detection hole 304 opened on the top outer wall of the detection slide plate 303. A detection top plate 305 is fixedly connected to the top outer wall of the detection slide plate 303. A detection spring 306 is fixedly connected to the outer wall of the detection top plate 305. The end of the detection spring 306 away from the detection top plate 305 is fixedly connected to the outer wall of the detection housing 301. When the power motor 114 rotates, the support movable rod 204 contacts the overall limiting frame 115 and causes the overall limiting frame 115 to swing, so that the support piston block 205 draws the liquid inside the overall housing 101 and transmits it into the detection housing 301, causing the detection telescopic rod 308 to expand outward. When the detection outer belt 309 contacts the external steel bar, pressure is generated, providing detection data for subsequent detection.

[0056] The internal detection mechanism 3 also includes a detection transmission pipe 307 that runs through the outer wall of the detection housing 301. The end of the detection transmission pipe 307 away from the detection housing 301 is connected through the outer wall of the support outer plate 209. A detection telescopic rod 308 is slidably connected to the inner wall of the detection housing 301. The bottom of the detection telescopic rod 308 is fixedly connected to the outer wall of the pressure sensor 112. A detection outer belt 309 is fixedly connected to the end of the detection telescopic rod 308 away from the detection housing 301. When the detection telescopic rod 308 contacts the reinforcing bar, the resulting contact force will be directly fed back to the pressure sensor 112. At this time, the pressure acts directly on the outer wall of the pressure sensor 112, thereby achieving real-time monitoring of the pressure limit at the coupling point between the soft foundation steel pipe and the inverted arch reinforcing bar.

[0057] The method of using the force monitoring device includes the following steps:

[0058] S1: Before using the device, slide the external handle 110 to align the small hole 111 with the central hole 107, so that the liquid inside the central shell 106 enters the interior of the outer shell 101.

[0059] S2: Place the detection outer belt 309 on the outer wall of the steel bar and connect the power motor 114 to make the overall outer shell 101 rotate;

[0060] S3: The bottom of the support rod 204 rotates with the overall limiting frame 115, causing the bottom support mechanism 2 and the internal detection mechanism 3 to draw out the liquid inside the overall external mechanism 1 and extend it outward, and to perform a pressure test on the steel bars.

[0061] S4: After the test is completed, press the outer wall of the test slide plate 303 to make the test telescopic rod 308 slide downward to complete the retraction.

[0062] A specific application of this embodiment is as follows: Before using the device, by pushing the external integral handle 110, the integral small hole 111 is aligned with the integral central hole 107, allowing liquid inside the integral middle shell 106 to enter the integral outer shell 101. This limits the height of the detection telescopic rod 308, thereby limiting the maximum pressure generated by the device and preventing excessive pressure that could damage the reinforcing steel. The bottom support mechanism 2 fully utilizes a lever mechanism; when the power motor 114 rotates, the support movable rod 204 contacts the integral limiting frame 115, causing the integral limiting frame 115 to swing, thus causing the support piston block 205 to absorb the entire... The liquid inside the outer shell 101 is transferred to the detection outer shell 301, causing the detection telescopic rod 308 to expand outward. When the detection outer strip 309 comes into contact with the external steel reinforcement, pressure is generated, providing detection data for subsequent detection. When the detection telescopic rod 308 contacts the steel reinforcement, the contact force generated is directly fed back to the pressure sensor 112. At this time, the pressure acts directly on the outer wall of the pressure sensor 112, thereby achieving real-time monitoring of the pressure limit at the coupling point between the soft foundation steel pipe and the inverted arch steel reinforcement. The device has a simple structure and is smaller in size than other detection devices currently on the market, making it easier to transport and apply, reducing the assembly time before use, and improving the efficiency of the device.

[0063] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An analytical method for monitoring the coupled stress of steel reinforcement in tunnel inverts, characterized in that; The analysis method for stress monitoring includes the following steps: Step 1: Data Acquisition: Data is collected on the invert arch reinforcement using a stress monitoring device; stress data is acquired by sensors, continuously collected and recorded. Step 2: Data Analysis: The system program processes and analyzes the collected stress data, including the magnitude of the force, the direction of the force, and the trend of force changes. Step 3: Result Evaluation: Based on the data analysis results, evaluate the coupling stress between the steel pipe in the soft soil foundation of the tunnel and the invert arch reinforcement, including potential stress concentration areas and stress anomalies; Step 4: Alarms and Warnings: When the monitoring results exceed the preset threshold, an alarm and warning mechanism will be automatically triggered to promptly remind relevant personnel to take measures; The force monitoring device includes an overall external mechanism (1), which further includes an overall outer shell (101). The outer wall of the overall outer shell (101) has several overall external grooves (102), and the bottom outer wall of the overall outer shell (101) has several overall side grooves (103). It also includes: Bottom support mechanism (2), the bottom support mechanism (2) includes a support shell (201) fixedly connected to the outer wall of a plurality of integral side grooves (103), a support receiving groove (202) fixedly connected to the inner wall of the support shell (201), and a support slide plate (203) rotatably connected to the inner wall of the support receiving groove (202). An internal detection mechanism (3) includes a detection housing (301) slidably connected to the inner wall of several integral outer grooves (102), a detection hole (302) is provided on the bottom outer wall of the detection housing (301), and a detection slide plate (303) is slidably connected to the outer wall of the detection housing (301). The overall external mechanism (1) also includes an overall inner plate (104) fixedly connected to the inner wall of the overall outer shell (101). The outer wall of the overall inner plate (104) is provided with a plurality of overall sliding tubes (105). An overall middle shell (106) is fixedly connected to the outer wall of the overall outer shell (101). The inner wall of the overall middle shell (106) is fixedly connected to the outer wall of the overall inner plate (104). The overall external mechanism (1) also includes an overall central hole (107) opened in the inner wall of the overall middle shell (106), an overall sliding plate (108) is slidably connected to the inner wall of the overall middle shell (106), an overall small plate (109) is fixedly connected to the outer wall of the overall sliding plate (108), an overall handle (110) is fixedly connected to the outer wall of the overall small plate (109), the outer wall of the overall handle (110) is slidably connected to the inner wall of the overall middle shell (106), and a plurality of overall small holes (111) are opened in the outer wall of the overall sliding plate (108). The overall external mechanism (1) also includes a pressure sensor (112) fixedly connected to the inner wall of the overall inner plate (104), an overall outer frame (113) is rotatably connected to the outer wall of the pressure sensor (112), and a power motor (114) is fixedly connected to the back of the outer wall of the overall outer shell (101). The overall external mechanism (1) also includes an overall limiting frame (115) fixedly connected to the outer wall of the power motor (114), an overall support frame (116) fixedly connected to the outer wall of the power motor (114), a plurality of overall rollers (117) rotatably connected to the outer wall of the overall support frame (116), and an overall outer plate (118) fixedly connected to the outer wall of the overall inner shell (106). The bottom support mechanism (2) further includes a support movable rod (204) rotatably connected to the inner wall of a plurality of support shells (201). A support piston block (205) is fixedly connected to the top of the outer wall of the support movable rod (204), and a support telescopic plate (206) is slidably connected to the outer wall of the support piston block (205). The bottom support mechanism (2) further includes a support base plate (207) that is connected through to the inner wall of the overall shell (101). The inner wall of the support base plate (207) is provided with a support movable bead (208), and the outer wall of the support shell (201) is fixedly connected with a support outer plate (209). The internal detection mechanism (3) also includes a detection hole (304) opened on the top outer wall of the detection slide plate (303). A detection top plate (305) is fixedly connected to the top outer wall of the detection slide plate (303). A detection spring (306) is fixedly connected to the outer wall of the detection top plate (305). One end of the detection spring (306) away from the detection top plate (305) is fixedly connected to the outer wall of the detection housing (301). The internal detection mechanism (3) further includes a detection transmission pipe (307) that is connected through to the outer wall of the detection housing (301). The end of the detection transmission pipe (307) away from the detection housing (301) is connected through to the outer wall of the support outer plate (209). A detection telescopic rod (308) is slidably connected to the inner wall of the detection housing (301). The bottom of the detection telescopic rod (308) is fixedly connected to the outer wall of the pressure sensor (112). A detection outer belt (309) is fixedly connected to the end of the detection telescopic rod (308) away from the detection housing (301).

2. The analytical method for monitoring the coupled stress of the tunnel invert reinforcement according to claim 1, characterized in that, The method of using the force monitoring device includes the following steps: S1: Before using the device, slide the external integral handle (110) to align the integral small hole (111) with the integral central hole (107) so that the liquid inside the integral middle shell (106) enters the integral outer shell (101); S2: Place the detection outer belt (309) on the outer wall of the steel bar and connect the power motor (114) to make the overall shell (101) rotate; S3: The bottom of the support rod (204) rotates with the overall limiting frame (115), causing the bottom support mechanism (2) and the internal detection mechanism (3) to absorb the liquid inside the overall external mechanism (1) and extend it outward, and to perform a pressure test on the steel bars; S4: After the test is completed, press the outer wall of the test slide plate (303) to make the test telescopic rod (308) slide down to complete the recycling.

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