A new type of prestressed anchor cable stress compensation alarm device

Abstract

In order to solve the problem in the prior art that the loss of prestress of anchor cables leads to sliding deformation of rock and soil bodies, and then leads to slope collapse, the utility model provides a new prestressed anchor cable stress compensation alarm device, including an anchor and an anchor seat, and a stress detection device is arranged between the anchor and the anchor seat, and the stress detection device includes a disc-shaped gasket device. The stress detection device of the utility model is pre-placed between the anchor and the anchor seat of the prestressed anchor cable, and the construction is simple and convenient, and does not increase, damage, or affect the original anchoring system. It can slightly compensate for the prestress relaxation and deformation of the prestressed anchor cable, ensuring safety and stability during the construction and operation periods of high slopes.

Description

Technical Field

[0001] The utility model relates to the field of stress anchor cable tensioning, in particular to a novel prestressed anchor cable stress compensation alarm device. Background Art

[0002] In recent years, transportation projects have advanced into the central and western regions and into the mountainous areas. High-cut slope protection projects have been increasingly widely used in highway projects, and prestressed anchor cable frame slope management has dominated high-cut slope projects. Prestressed anchor cable frame stabilizes slopes by applying prestress to rock formations through anchor cables, increasing friction between rock masses and between rock masses and anchor cables, reducing shear deformation of slopes caused by the deadweight of soil and rock, and preventing slope cracking and collapse caused by earthquakes and other factors. As the prestress of the anchor cable creeps over time, the prestress of the anchor cable decreases, thereby increasing the risk of the slope. Commonly used prestressed anchor cables do not have the ability to compensate for prestress, resulting in a short interval between years and high costs for prestress repair of slope anchor cables.

[0003] In the case of unpredictable natural forces such as earthquakes, the rock and soil layers slide due to huge external forces, causing the anchor cables to stretch and break instantly, thus causing the slope to become unstable. Therefore, it is very necessary to add facilities to monitor the stability of the slope in real time. With the update of engineering technology materials and the development of mobile communication technology, low-cost and highly reliable detection and communication technology are used to continuously monitor whether the prestress of the anchor cables drops below the threshold, which has become the key to ensuring the safety and stability of prestressed high slope projects. At the same time, it also reduces the risk of manual detection of prestress in extreme weather.

[0004] In order to solve the above problems, the Chinese utility model patent with patent number CN212612450U proposes an anchor cable prestress compensation device, including a waist beam, an anchor and an anchor cable, the side of the anchor is a conical surface, two oppositely arranged and semi-cylindrical fasteners are provided on both sides of the anchor, the outer side of the fastener is sleeved with a connecting tube, the inner side of the connecting tube is provided with two layers of inwardly protruding and respectively matching with the fastener and the clamping groove of the load-bearing column, the outer side of the connecting tube is sleeved with a guide tube, the upper half of the load-bearing column is located outside the connecting tube and is penetrated by a slidable load-bearing plate, the two ends of the load-bearing plate penetrate the load-bearing column and the bottom is in contact with the top rods of the hydraulic jacks on both sides of the load-bearing column. However, the utility model needs to insert a gasket to achieve prestress compensation, and only protects the anchor structure as a whole, without considering that the gasket continuously provides prestress and is prone to structural damage, and timely handling when the gasket is damaged. Utility Model Content

[0005] The utility model mainly solves the problem in the prior art that the loss of prestress of anchor cables leads to sliding and deformation of rock and soil bodies, which in turn leads to slope collapse, and provides a novel prestressed anchor cable stress compensation alarm device.

[0006] The above technical problems of the utility model are mainly solved by the following technical solutions:

[0007] A novel prestressed anchor cable stress compensation alarm device, characterized in that it includes an anchor and an anchor seat, a stress detection device is provided between the anchor and the anchor seat, and the stress detection device includes a disc-shaped gasket device. The stress detection device of the utility model is pre-placed between the anchor and the anchor seat of the prestressed anchor cable, and the construction is simple and convenient, and does not increase, damage, or affect the original anchoring system. It can perform micro-compensation for the prestressed relaxation and deformation of the prestressed anchor cable, ensuring safety and stability during the construction and operation periods of high slopes.

[0008] As a preferred solution, the material of the disc-shaped gasket device is memory alloy steel, so that the device can compensate for part of the prestress loss by restoring its elastic deformation.

[0009] As a preferred solution, a pressure sensing resistor is provided on one side of the disc-shaped gasket device close to the anchor seat, and the resistance of the pressure sensing resistor can change with the deformation degree of the disc-shaped gasket device, so that the utility model has the ability to detect the deformation of the slope.

[0010] As a preferred solution, the pressure sensing resistor is connected to an early warning circuit, so that the pressure sensing resistor can provide an early warning through the connected circuit.

[0011] As a preferred solution, a signal transmitting device is provided inside the pressure sensing resistor, which can send out early warning information.

[0012] As a preferred solution, the outside of the anchor is wrapped with a trapezoidal concrete head, a solar panel is provided on the top of the concrete head away from the anchor, and a battery capacitor is provided on the top of the concrete head close to the anchor.

[0013] As a preferred solution, the solar panel, battery capacitor and early warning circuit are connected via a circuit, which greatly saves energy costs.

[0014] As a preferred solution, the anchor seat is fixed to the external corrugated steel pipe by spiral ribs to stabilize the device structure.

[0015] Therefore, the advantages of the utility model are:

[0016] 1. The stress detection device of the utility model is pre-placed between the anchor and the anchor seat of the prestressed anchor cable. The construction is simple and convenient, and does not increase, damage or affect the original anchoring system. It can perform micro-compensation and early warning for the prestress relaxation and deformation of the prestressed anchor cable, ensuring safety and stability during the construction and operation periods of high slopes.

[0017] 2. The utility model can perform unmanned micro-stress compensation and monitoring of the prestressed anchor cable by pre-installing a disc-shaped gasket device, an alarm circuit and a signal transmitting device in the prestressed anchor cable system.

[0018] 3. The utility model has a simple structure and low cost, can be widely used in geotechnical engineering, and has significant social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model.

[0020] Figure 2 It is a circuit diagram of the early warning circuit of the utility model.

[0021] In the figure: 1. Anchor; 2. Anchor seat; 3. Disc-shaped gasket device; 4. Pressure sensing resistor; 41. Signal transmitting device; 5. Solar panel; 6. Battery capacitor. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings. Example

[0023] The utility model provides a new type of prestressed anchor cable stress compensation alarm device, which aims to improve the safety and stability during the construction and operation periods of high slopes, including an anchor 1 and an anchor seat 2, and a stress detection device is arranged between the anchor 1 and the anchor seat 2, and the stress detection device includes a disc-shaped gasket device 3 in the shape of a flat bottom V. This design structure helps to ensure stability and durability. The stress detection device of the utility model is pre-placed between the anchor 1 and the anchor seat 2 of the prestressed anchor cable, and the construction is simple and convenient, without adding, damaging, or affecting the original anchoring system, and can perform micro-compensation for the prestressed relaxation and deformation of the prestressed anchor cable, ensuring safety and stability during the construction and operation periods of high slopes.

[0024] In engineering construction, prestressed anchor cables are often used to provide additional support and stability. However, over time, the prestress may relax or deform due to various reasons, which may lead to a decrease in the safety of the entire structure. Therefore, it is crucial to monitor and compensate for changes in prestress in a timely manner.

[0025] The utility model pre-installs a stress detection device between the anchor 1 and the anchor seat 2, which makes it very easy to install during construction. The device is designed not to increase the complexity of construction or cause damage to the existing anchoring system. The construction team can quickly and easily install the device without affecting the original structure.

[0026] The core function of the stress detection device is to monitor the stress changes of the prestressed anchor cables and make micro-compensations when necessary. It can detect small changes in prestress relaxation and deformation and compensate through appropriate adjustments. This micro-compensation ensures the safety and stability of the high slope during construction and operation, allowing the engineering structure to maintain good performance under various conditions.

[0027] In addition, the flat-bottomed V-shaped disc gasket design also has the function of dispersing stress, making it more reliable in application. This structure can effectively avoid excessive local stress, thereby reducing the risk of structural damage caused by stress concentration.

[0028] In summary, the new prestressed anchor cable stress compensation alarm device provided by the utility model has significant advantages in the construction and operation of high slopes. It is simple to install and convenient to construct, and will not cause damage to the existing anchoring system. At the same time, it can effectively monitor the changes in prestress, make micro-compensation in time, and ensure the stability and safety of high slope structures under different conditions. The application of this device helps to reduce engineering risks and ensure the safety of construction and operation.

[0029] The material of the disc-shaped gasket device 3 is memory alloy steel, which has unique properties, enabling the device to recover elastic deformation by itself, effectively coping with the problem of prestress loss in engineering and compensating for part of the prestress loss. Memory alloy steel is well known for its unique shape memory performance. When deformed by external forces, it can quickly return to its original state through its own recovery elastic deformation, thereby compensating for part of the prestress loss. This feature is particularly important in the engineering field, especially for structures that require long-term stability and reliability. The application of the disc-shaped gasket device 3 can effectively extend the service life of the prestressed anchor cable, reduce maintenance costs, and improve the safety and sustainability of the project.

[0030] In addition to the selection of materials, a pressure sensing resistor 4 is provided on the side of the disc-shaped gasket device 3 close to the anchor seat 2. This is an electronic component that can produce resistance changes according to external force or deformation. The resistance of the pressure sensing resistor 4 can change with the degree of deformation of the disc-shaped gasket device 3, and this change can be accurately measured and recorded. By monitoring the change in the resistance of the pressure sensing resistor 4, the degree of deformation of the disc-shaped gasket device 3 can be understood in real time, thereby indirectly reflecting the deformation of the slope. This intelligent design enables the disc-shaped gasket device 3 to have the ability to detect the deformation of the slope, providing important support for the safety monitoring and early warning of the project.

[0031] In practical applications, the disc-shaped gasket device 3 can not only be used in the prestressed anchor cable system of the slope, but can also be widely used in engineering structures such as bridges, tunnels, and buildings to enhance the stability and reliability of the structure. Its material advantages and intelligent design have brought innovative solutions to the engineering field and provided more options and guarantees for engineering construction and operation. Therefore, the disc-shaped gasket device 3 has broad application prospects and is expected to become one of the important technologies in the engineering field, contributing to social development and construction.

[0032] While ensuring safety, the device also has a complete set of alarm functions for monitoring and warning the safety status of prestressed anchor cables on high slopes. If an abnormal change in the stress of the prestressed anchor cable is detected, the device can quickly issue an alarm to remind the construction personnel or the operation team to take appropriate countermeasures to prevent potential accidents. This alarm mechanism works based on the resistance change of the pressure sensing resistor 4. When the prestressed anchor cable is subjected to abnormal stress, the resistance value of the pressure sensing resistor 4 changes significantly, triggering the early warning circuit, which in turn triggers the alarm. If an abnormal change in the stress of the prestressed anchor cable is detected, the device can issue an alarm to remind the construction personnel or the operation team to take appropriate measures. This function plays an important role in ensuring the safety of high slopes. In order to ensure the reliability and timeliness of the alarm system, the pressure sensing resistor 4 is connected to the early warning circuit, so that the pressure sensing resistor 4 can issue an early warning through the connected circuit, can sensitively sense the resistance change of the pressure sensing resistor 4, and decide whether to trigger the alarm according to the preset threshold. When the stress level of the prestressed anchor cable exceeds the safety range, the early warning circuit will be automatically activated to ensure that the construction personnel or the operation team can be informed of the abnormal situation at the first time. At the same time, a signal transmitting device 41 is provided inside the pressure sensing resistor 4, which can transmit the alarm information to a remote end, ensuring that the entire engineering monitoring network can grasp the safety status of the site in real time.

[0033] In addition, the existence of the signal transmitter 41 makes the early warning function of the device more flexible and scalable. It can be connected to the remote monitoring system to achieve remote data transmission and real-time monitoring, which is particularly important when the project is large-scale or there are many monitoring points. The design of the signal transmitter 41 fully considers the actual needs of on-site construction and operation, and can operate stably in harsh environments to ensure that the early warning information can be transmitted to the control center in a timely and accurate manner.

[0034] The establishment of this alarm mechanism is of great significance for the safety monitoring of high slopes. It can not only detect potential safety risks at the first time, but also provide a reliable decision-making basis for the engineering operation team, helping them to take preventive measures in time and reduce the risk of accidents. By continuously optimizing the early warning circuit and signal transmitting device 41, the alarm function of the device will become more intelligent and accurate, providing a stronger guarantee for the safe operation of high slopes.

[0035] Therefore, the alarm device of the utility model plays a key role in ensuring the safety of high slopes. By monitoring the resistance change of the pressure sensing resistor 4 and issuing an alarm in time, the device can effectively reduce the probability of safety accidents and ensure the safety and stability during construction and operation. The design of the early warning circuit and the signal transmitting device 41 enables the device to perform well in complex engineering environments and become an indispensable and important tool for high slope engineering.

[0036] The outside of the anchor 1 is wrapped with a trapezoidal concrete head. This design can not only protect the anchor 1 from erosion and damage from the external environment, but also provide additional structural support and stability for the anchor 1. A solar panel 5 is provided on the top of the concrete head away from the anchor 1. This design cleverly utilizes solar energy resources and converts light energy into electrical energy to provide a stable power supply for the device. A battery capacitor 6 is provided on the top of the concrete head close to the anchor 1 to store the electrical energy collected by the solar panel 5 for emergency use.

[0037] The solar panel 5, the battery capacitor 6 and the early warning circuit are connected by circuits. This connection mode not only enables efficient transmission of energy between the various components, but also greatly saves energy costs. Through the control and regulation of intelligent circuits, the rational use and distribution of electric energy can be achieved, ensuring the long-term stable operation of the device and reducing maintenance and operating costs. This intelligent design also makes the device more autonomous and adaptable, and can adjust energy consumption and supply in real time according to the environment and working status, improve energy utilization, and extend the service life of the equipment.

[0038] The anchor seat 2 is fixed to the external corrugated steel pipe by spiral ribs to stabilize the device structure. This structural design can not only effectively stabilize the overall structure of the device, but also adapt to various terrain and environmental requirements. The selection and fixing method of the spiral ribs have been carefully calculated and tested to ensure a firm connection between the anchor seat 2 and the corrugated steel pipe, preventing the device from loosening or tilting due to external forces or environmental factors. This stable structural design provides a solid foundation for the long-term stable operation of the device, reduces the frequency of maintenance and repair, and reduces operating costs and safety risks. Example

[0039] When the reinforced soil and rock mass is deformed due to the deformation of the slope, the deformation of the anchor cable or other reasons, the disc-shaped gasket device 3 is pressed to a certain elastic deformation when the anchor cable applies prestress. When the prestress is lost, the disc-shaped gasket device 3 compensates for part of the prestress loss by restoring its elastic deformation. When the deformation of the anchor cable or the slope is large, the deformation of the disc-shaped gasket reaches the threshold, the resistance value of the pressure sensing resistor 4 changes, and an early warning is issued through the connected circuit. The early warning circuit is powered by solar energy and capacitor circuits, and 2.4G wireless communication is used to collect the warning position and warning data to the centralized transceiver. The centralized transceiver transmits the warning position and warning data to the monitoring center through GPRS communication, so as to compensate and deal with the prestress loss in time.

[0040] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A new type of prestressed anchor cable stress compensation alarm device, characterized in that: It comprises an anchor and an anchor seat, wherein a stress detection device is arranged between the anchor and the anchor seat, and the stress detection device comprises a disc-shaped gasket device.

2. A novel prestressed anchor cable stress compensation alarm device according to claim 1, characterized in that: The material of the disc-shaped gasket device is memory alloy steel.

3. A novel prestressed anchor cable stress compensation alarm device according to claim 1 or 2, characterized in that: A pressure sensing resistor is arranged on one side of the disc-shaped gasket device close to the anchor seat.

4. A novel prestressed anchor cable stress compensation alarm device according to claim 3, characterized in that: The pressure sensing resistor is connected to an early warning circuit.

5. A novel prestressed anchor cable stress compensation alarm device according to claim 4, characterized in that: A signal transmitting device is arranged inside the pressure sensing resistor.

6. A novel prestressed anchor cable stress compensation alarm device according to claim 4, characterized in that: The outside of the anchor is wrapped with a trapezoidal concrete head, a solar panel is arranged on the top of the concrete head away from the anchor, and a battery capacitor is arranged on the top of the concrete head close to the anchor.

7. A novel prestressed anchor cable stress compensation alarm device according to claim 6, characterized in that: The solar cell panel, the battery capacitor and the early warning circuit are connected via a circuit.

8. The novel prestressed anchor cable stress compensation alarm device according to claim 1 is characterized in that: The anchor seat is fixed on the external corrugated steel pipe through spiral ribs.

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