Large-tonnage slideway beam accurate in-position method and system based on stress monitoring

Abstract

The invention provides a large-tonnage slideway beam accurate in-position method and system based on stress monitoring, and relates to the technical field of stress monitoring, and the method comprises the steps: obtaining stress data of a preset position of a slideway beam through a stress sensor disposed at the preset position; obtaining a slideway beam material of the slideway beam; environmental data are obtained through a sensor arranged on a construction site, and the environmental data comprise temperature data and humidity data; determining an allowable stress value according to the slideway beam material and the environmental data; according to the stress data and the allowable stress value, determining a stress uniformity identification result and a stress allowable identification result at the preset position; and according to the stress uniformity identification result and the stress permission identification result, determining whether to adjust the preset position. According to the method, the stress uniformity condition and the maximum allowable stress condition of the slideway beam can be evaluated, and the in-place accuracy of the slideway beam is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of force monitoring, and in particular to a method and system for accurately positioning a large-tonnage slideway beam based on force monitoring. Background Art

[0002] In the related art, CN114486007A discloses a bridge force monitoring system and a method of using the same, which belongs to the field of bridges and solves the problem of high cost of the current bridge force monitoring system. It includes a bridge support, a plurality of piezoelectric sensors, a plurality of piezoelectric ceramic sheets, a signal collector, a signal converter, a data transmitter and an electric energy storage device. The bridge support is arranged between the bridge pier and the bridge main beam. A plurality of piezoelectric sensors are embedded in the bridge support so that when the bridge support is compressed, the piezoelectric sensors can be compressed to generate an electrical signal. A plurality of piezoelectric ceramic sheets are embedded in the bridge support so that when the bridge support is compressed, the piezoelectric ceramic sheets can be compressed to generate an electric charge. The piezoelectric sensor is electrically connected to the signal collector. The signal collector is electrically connected to the signal converter. The signal converter is electrically connected to the data transmitter. The piezoelectric ceramic sheet is electrically connected to the electric energy storage device. The signal collector, the signal converter and the data transmitter are all electrically connected to the electric energy storage device. The cost of this solution is low.

[0003] CN112729635B discloses a computer-based steel-concrete composite beam stress state real-time monitoring support and monitoring method, including the following steps: frame layout, installation of drive parts, preset connectors, monitoring component installation, and application. The beneficial effect is that the computer-based steel-concrete composite beam stress state real-time monitoring method proposed in the scheme connects the pressure sensor installed between the support steel lining plate and the upper seat plate with the data display control center, so that the data monitored by the pressure sensor in real time is integrated by the computer and displayed in the data display control center, which is convenient for people to find the stress state of the steel-concrete composite beam in time.

[0004] Based on the above related technologies, the stress condition of the composite beam can be monitored in real time. However, the related technologies do not consider the influence of the stress condition of the beam during the erection of the beam, that is, it is impossible to ensure that the beam is accurately positioned according to the environmental conditions and the stress condition of the beam.

[0005] The information disclosed in the background technology section of this application is only intended to deepen the understanding of the general background technology of this application, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] The present invention provides a method and system for accurately positioning a large-tonnage slideway beam based on force monitoring, which can solve the technical problem that related technologies cannot ensure accurate positioning of the beam body according to environmental conditions and the stress conditions of the beam body.

[0007] According to a first aspect of the present invention, there is provided a method for precisely positioning a large-tonnage slide beam based on force monitoring, comprising: obtaining stress data at a preset position of the slide beam by means of a stress sensor arranged at the preset position; obtaining the slide beam material of the slide beam; obtaining environmental data by means of a sensor arranged at the construction site, wherein the environmental data comprises: temperature data and humidity data; determining an allowable stress value according to the slide beam material and the environmental data; determining a uniform force identification result and an allowable force identification result at the preset position according to the stress data and the allowable stress value; and determining whether to adjust the preset position according to the uniform force identification result and the allowable force identification result.

[0008] According to the present invention, the allowable stress value is determined according to the slide beam material and the environmental data, including: determining a benchmark tensile strength and a benchmark shear strength according to the slide beam material; obtaining experimental data in a historical experimental cycle, wherein the experimental data include: experimental temperature, experimental humidity, experimental tensile strength and experimental shear strength; determining a tensile strength magnitude function and a shear strength magnitude function according to the benchmark tensile strength, the benchmark shear strength, the experimental temperature, the experimental humidity, the experimental tensile strength and the experimental shear strength; determining real-time tensile strength and real-time shear strength according to the tensile strength magnitude function, the shear strength magnitude function, the benchmark tensile strength, the benchmark shear strength and the environmental data; obtaining a safety factor; and determining an allowable stress value according to the safety factor, the real-time tensile strength and the real-time shear strength.

[0009] According to the present invention, determining the tensile strength magnitude function and the shear strength magnitude function according to the reference tensile strength, the reference shear strength, the experimental temperature, the experimental humidity, the experimental tensile strength and the experimental shear strength comprises: according to the formula , determine the first undetermined coefficient equation A of the tensile strength magnitude function and the second undetermined coefficient equation B of the shear strength magnitude function, where, is the base tensile strength, is the experimental tensile strength in the kth historical experimental cycle, is the experimental humidity in the kth historical experimental cycle, is the experimental temperature in the kth historical experimental cycle, is the preset temperature threshold, is the experimental shear strength in the kth historical experimental cycle, is the base shear strength, , , , , and is the first undetermined coefficient of the first undetermined coefficient equation A, , , , , and is the second undetermined coefficient of the second undetermined coefficient equation B; according to the benchmark tensile strength, the benchmark shear strength, the experimental temperature, the experimental humidity, the experimental tensile strength and the experimental shear strength, the first undetermined coefficient and the second undetermined coefficient are solved to obtain the solved values ​​of the first undetermined coefficient and the second undetermined coefficient; according to the solved values ​​of the first undetermined coefficient and the second undetermined coefficient, as well as the first undetermined coefficient equation A and the second undetermined coefficient equation B, the tensile strength magnitude function and the shear strength magnitude function are determined.

[0010] According to the present invention, the allowable stress value is determined according to the safety factor, the real-time tensile strength and the real-time shear strength, including: according to the formula , determine the allowable stress value ,in, is the real-time tensile strength, is the real-time shear strength, is the safety factor.

[0011] According to the present invention, a force uniformity identification result and a force allowable identification result at a preset position are determined based on the stress data and the allowable stress value, including: determining the force allowable identification result at the jth preset position based on the stress data at the jth preset position and the allowable stress value; determining the stress data standard deviation based on the stress data at each preset position; determining the force uniformity identification result at the jth preset position based on the stress data at the jth preset position and the stress data standard deviation.

[0012] According to the present invention, the allowable force identification result at the jth preset position is determined based on the stress data at the jth preset position and the allowable stress value, including: if the stress data at the jth preset position is greater than or equal to the allowable stress value, the allowable force identification result at the jth preset position is 1; if the stress data at the jth preset position is less than the allowable stress value, the allowable force identification result at the jth preset position is 0.

[0013] According to the present invention, according to the stress data at the j-th preset position and the standard deviation of the stress data, determining the force uniformity identification result at the j-th preset position includes: according to the formula , determine the uniform force identification result at the jth preset position , where if is a conditional function, is the stress data at the jth preset position, is the preset multiple, is the standard deviation of stress data, m is the number of preset positions, j≤m, j and m are both positive integers.

[0014] According to the present invention, whether to adjust the preset position is determined based on the uniform force recognition result and the allowed force recognition result, including: if the uniform force recognition result is 1, determining to adjust the preset position; if the allowed force recognition result is 1, determining to adjust the preset position; if the uniform force recognition result and the allowed force recognition result are both 0, determining not to adjust the preset position.

[0015] According to a second aspect of the present invention, there is provided a large-tonnage slide beam precise positioning system based on force monitoring, comprising: a stress detection module, used to obtain stress data at a preset position of the slide beam through a stress sensor arranged at the preset position; a slide beam material module, used to obtain the slide beam material of the slide beam; an environment detection module, used to obtain environmental data through a sensor arranged at a construction site, wherein the environmental data comprises: temperature data and humidity data; an allowable stress module, used to determine an allowable stress value according to the slide beam material and the environmental data; an identification result module, used to determine a force uniformity identification result and a force allowable identification result at a preset position according to the stress data and the allowable stress value; and an adjustment determination module, used to determine whether to adjust the preset position according to the force uniformity identification result and the force allowable identification result.

[0016] Technical effect: According to the present invention, the influence of the slideway beam material and environmental conditions on the design stress value can be accurately analyzed, the allowable stress value can be determined, and based on the stress data and allowable stress values ​​at each preset position, the force uniformity and maximum allowable force condition of the slideway beam can be evaluated, and the force uniformity identification result and the force allowable identification result can be determined. Further, according to the force uniformity identification result and the force allowable identification result, it is determined whether to adjust the slideway beam, thereby improving the accuracy of the slideway beam in place. When determining the tensile strength magnitude function and the shear strength magnitude function, the tensile strength magnitude function and the shear strength magnitude function can be determined based on the benchmark tensile strength, benchmark shear strength, experimental temperature, experimental humidity, experimental tensile strength and experimental shear strength, accurately describing the influence of temperature and humidity changes on tensile strength and shear strength, thereby improving the accuracy and objectivity of the tensile strength magnitude function and the shear strength magnitude function. When determining the allowable stress value, the allowable stress value can be determined based on the safety factor, real-time tensile strength and real-time shear strength. During the calculation process, the allowable value of the bending stress and the allowable value of the shear stress of the slideway beam can be determined separately, and the allowable stress value can be determined based on the vector properties and interactions of the stresses, thereby improving the accuracy and objectivity of the allowable stress value. When determining the uniform force identification result, the uniform force identification result at the jth preset position can be determined based on the stress data at the jth preset position and the standard deviation of the stress data. Whether the force at the jth preset position is uniform can be judged based on the deviation between the stress data at the jth preset position and the average stress data at the m preset positions, thereby improving the accuracy of the uniform force identification result.

[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and do not limit the present invention. Other features and aspects of the present invention will become more apparent from the following detailed description of exemplary embodiments with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other embodiments can be obtained based on these drawings without creative work. Figure 1 A schematic flow chart of a method for accurately positioning a large-tonnage slideway beam based on force monitoring according to an embodiment of the present invention is exemplarily shown; Figure 2 A block diagram of a large-tonnage slideway beam precise positioning system based on force monitoring according to an embodiment of the present invention is exemplarily shown. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0021] Figure 1 A flow chart of a method for accurately placing a large-tonnage slide beam based on force monitoring according to an embodiment of the present invention is exemplarily shown, the method comprising: step S101, obtaining stress data at a preset position of the slide beam by means of a stress sensor arranged at the preset position; step S102, obtaining the slide beam material of the slide beam; step S103, obtaining environmental data by means of a sensor arranged at the construction site, wherein the environmental data comprises: temperature data and humidity data; step S104, determining an allowable stress value according to the slide beam material and the environmental data; step S105, determining a force uniformity identification result and a force allowable identification result at the preset position according to the stress data and the allowable stress value; Step S106: Determine whether to adjust the preset position according to the force uniformity recognition result and the force allowance recognition result.

[0022] According to the precise positioning method of a large-tonnage slide beam based on force monitoring in an embodiment of the present invention, the influence of the slide beam material and environmental conditions on the design stress value can be accurately analyzed, the allowable stress value can be determined, and based on the stress data and the allowable stress value at each preset position, the force uniformity condition and the maximum allowable stress condition of the slide beam can be evaluated, and the force uniformity identification result and the force allowable identification result can be determined. Furthermore, according to the force uniformity identification result and the force allowable identification result, it is determined whether to adjust the slide beam, thereby improving the accuracy of the slide beam positioning.

[0023] According to an embodiment of the present invention, in step S101, stress data at a preset position of the slideway beam is acquired by a stress sensor disposed at the preset position.

[0024] For example, by setting stress sensors at multiple preset positions of the slide beam (such as the mid-span position, the support position, the hanging point position and the connection node position), the stress data of the slide beam at each preset position during the slide beam hoisting and erection process is obtained.

[0025] According to an embodiment of the present invention, in step S102, the slideway beam material of the slideway beam is obtained.

[0026] For example, determine the slide beam material of the slide beam based on the bridge design documents and construction records.

[0027] According to an embodiment of the present invention, in step S103, environmental data is acquired through sensors installed at the construction site, wherein the environmental data includes temperature data and humidity data.

[0028] For example, temperature sensors and humidity sensors are set at sampling locations on the construction site. The sampling locations can accurately reflect the environmental conditions of the construction site. The temperature and humidity data of the construction site can be obtained through the temperature sensors and humidity sensors.

[0029] According to an embodiment of the present invention, in step S104, the allowable stress value is determined according to the slideway beam material and the environmental data.

[0030] According to one embodiment of the present invention, step S104 includes: determining a benchmark tensile strength and a benchmark shear strength according to the slide beam material; obtaining experimental data in a historical experimental cycle, wherein the experimental data includes: experimental temperature, experimental humidity, experimental tensile strength and experimental shear strength; determining a tensile strength magnitude function and a shear strength magnitude function according to the benchmark tensile strength, the benchmark shear strength, the experimental temperature, the experimental humidity, the experimental tensile strength and the experimental shear strength; determining real-time tensile strength and real-time shear strength according to the tensile strength magnitude function, the shear strength magnitude function, the benchmark tensile strength, the benchmark shear strength and the environmental data; obtaining a safety factor; determining an allowable stress value according to the safety factor, the real-time tensile strength and the real-time shear strength.

[0031] For example, when the slideway beam is made of steel, by referring to the product standards of the steel (e.g., GB / T 700 Carbon Structural Steel or GB / T 1591 "Low-alloy high-strength structural steel"), obtain the benchmark tensile strength and benchmark shear strength of the slide beam material; in the historical experimental cycle, the tensile strength and shear strength of the slide beam material are tested under different temperature and humidity conditions to obtain experimental data of multiple historical experimental cycles; the experimental tensile strength and experimental shear strength are related to temperature and humidity to a certain extent, for example, under high or low temperature conditions, the experimental tensile strength and experimental shear strength will be lower, and under high humidity conditions, the experimental tensile strength and experimental shear strength will be lower. Based on the above correlation, the tensile strength size function between the experimental tensile strength, experimental temperature and experimental humidity, and the shear strength size function between the experimental shear strength, experimental temperature and experimental humidity can be determined; the real-time temperature and real-time humidity of the construction site are substituted into the tensile strength size function and the shear strength size function to determine the real-time tensile strength and real-time shear strength; according to the requirements of industry specifications, the safety factor is determined, which is usually 1.5-2.5; based on the safety factor, the real-time tensile strength and the real-time shear strength, the allowable stress value is determined.

[0032] According to one embodiment of the present invention, determining a tensile strength magnitude function and a shear strength magnitude function according to the reference tensile strength, the reference shear strength, the experimental temperature, the experimental humidity, the experimental tensile strength and the experimental shear strength includes: determining a first undetermined coefficient equation A of the tensile strength magnitude function and a second undetermined coefficient equation B of the shear strength magnitude function according to formula (1), (1), where is the base tensile strength, is the experimental tensile strength in the kth historical experimental cycle, is the experimental humidity in the kth historical experimental cycle, is the experimental temperature in the kth historical experimental cycle, is the preset temperature threshold, is the experimental shear strength in the kth historical experimental cycle, is the base shear strength, , , , , and is the first undetermined coefficient of the first undetermined coefficient equation A, , , , , and is the second undetermined coefficient of the second undetermined coefficient equation B; according to the benchmark tensile strength, the benchmark shear strength, the experimental temperature, the experimental humidity, the experimental tensile strength and the experimental shear strength, the first undetermined coefficient and the second undetermined coefficient are solved to obtain the solved values ​​of the first undetermined coefficient and the second undetermined coefficient; according to the solved values ​​of the first undetermined coefficient and the second undetermined coefficient, as well as the first undetermined coefficient equation A and the second undetermined coefficient equation B, the tensile strength magnitude function and the shear strength magnitude function are determined.

[0033] According to one embodiment of the present invention, Equivalent to , It means that the experimental tensile strength in the kth historical experimental cycle has a positive correlation with the benchmark tensile strength of the slideway beam material. It means that the experimental tensile strength in the kth historical experimental cycle is negatively correlated with the experimental humidity in the kth historical experimental cycle. When the humidity in the environment is high, it will cause a certain corrosion effect on the slide beam material, resulting in a decrease in the experimental tensile strength of the slide beam material. is the relative difference between the experimental temperature in the kth historical experimental cycle and the preset temperature threshold. The larger the ratio is, the greater the difference between the experimental temperature and the preset temperature threshold is, and the experimental temperature is too high or too low. It means that the experimental tensile strength in the kth historical experimental cycle is negatively correlated with the relative difference between the experimental temperature in the kth historical experimental cycle and the preset temperature threshold. When in a high temperature environment, the thermal motion of atoms inside the slide beam material intensifies, resulting in the weakening of the bonding force between atoms and the reduction of the experimental tensile strength. When in a low temperature environment, the dislocation motion is suppressed, and it is difficult for the slide beam material to release stress through plastic deformation, so the experimental tensile strength is reduced. Based on the above correlation, the first undetermined coefficient equation A of the tensile strength function can be obtained.

[0034] According to one embodiment of the present invention, Equivalent to , It means that the experimental shear strength in the kth historical experimental cycle has a positive correlation with the benchmark shear strength of the slide beam material. It means that the experimental shear strength in the kth historical experimental cycle is negatively correlated with the experimental humidity in the kth historical experimental cycle. A high humidity environment (especially one containing corrosive media such as chloride ions and sulfur dioxide) will accelerate the corrosion of the slide beam material, resulting in a lower experimental shear strength. It means that the experimental shear strength in the kth historical experimental cycle is negatively correlated with the relative difference between the experimental temperature in the kth historical experimental cycle and the preset temperature threshold. In a high temperature environment, the grains of the slide beam material will grow, resulting in a decrease in the number of grain boundaries and a weakening of the barrier effect of grain boundaries on dislocations, thereby reducing the shear strength of the steel. In a low temperature environment, the strength of the grain boundaries formed by carbon atoms is weakened, which can easily lead to grain boundary sliding and fracture, thereby reducing the shear strength of the steel. Based on the above correlation, the second undetermined coefficient equation B of the shear strength function can be obtained.

[0035] According to one embodiment of the present invention, fitting can be performed based on multiple parameters involved in the above first undetermined coefficient equation, that is, fitting can be performed based on experimental tensile strength, experimental temperature, experimental humidity and reference tensile strength to solve the above multiple first undetermined coefficients. There are 6 first undetermined coefficients, namely, , , , , and , according to the experimental tensile strength, experimental temperature, experimental humidity and benchmark tensile strength of at least 6 historical experimental cycles, the above 6 first undetermined coefficients are solved to obtain the solution values ​​of the above 6 first undetermined coefficients, and the solution values ​​of the above 6 first undetermined coefficients are substituted into the first undetermined coefficient equation A to determine the tensile strength size function.

[0036] According to one embodiment of the present invention, fitting can be performed based on multiple parameters involved in the above second undetermined coefficient equation, that is, fitting can be performed based on experimental shear strength, experimental temperature, experimental humidity and reference shear strength to solve the above multiple second undetermined coefficients. There are 6 second undetermined coefficients, namely, , , , , and , according to the experimental shear strength, experimental temperature, experimental humidity and benchmark shear strength of at least 6 historical experimental cycles, the above 6 second undetermined coefficients are solved to obtain the solution values ​​of the above 6 second undetermined coefficients, and the solution values ​​of the above 6 second undetermined coefficients are substituted into the second undetermined coefficient equation B to determine the shear strength size function.

[0037] In this way, the tensile strength magnitude function and the shear strength magnitude function can be determined according to the benchmark tensile strength, benchmark shear strength, experimental temperature, experimental humidity, experimental tensile strength and experimental shear strength, which accurately describes the influence of temperature and humidity changes on the tensile strength and shear strength, and improves the accuracy and objectivity of the tensile strength magnitude function and the shear strength magnitude function.

[0038] According to one embodiment of the present invention, determining the allowable stress value according to the safety factor, the real-time tensile strength and the real-time shear strength includes: determining the allowable stress value according to formula (2): , (2), where is the real-time tensile strength, is the real-time shear strength, is the safety factor.

[0039] According to one embodiment of the present invention, is the ratio of real-time tensile strength to safety factor, indicating the allowable bending stress of the slideway beam. is the ratio of real-time shear strength to safety factor, indicating the allowable shear stress of the slideway beam. The allowable value of combined stress, that is, the allowable stress value, is determined based on the vector properties and interaction of stress.

[0040] In this way, the allowable stress value can be determined based on the safety factor, real-time tensile strength and real-time shear strength. During the calculation process, the allowable value of the bending stress and the allowable value of the shear stress of the slideway beam can be determined separately, and the allowable stress value can be determined based on the vector properties and interaction of the stresses, thereby improving the accuracy and objectivity of the allowable stress value.

[0041] According to an embodiment of the present invention, in step S105, a force uniformity identification result and a force allowable identification result at a preset position are determined according to the stress data and the allowable stress value.

[0042] According to one embodiment of the present invention, step S105 includes: determining the allowable force identification result at the jth preset position based on the stress data at the jth preset position and the allowable stress value; determining the standard deviation of the stress data based on the stress data at each preset position; determining the force uniformity identification result at the jth preset position based on the stress data at the jth preset position and the standard deviation of the stress data.

[0043] For example, the stress data and allowable stress value at the j-th position of the slide beam are used to evaluate the stress condition at the j-th preset position and determine the allowable stress identification result; based on the stress data at all m positions of the slide beam, the stress data standard deviation of the m stress data is calculated; based on the stress data at the j-th preset position and the stress data standard deviation, it is determined whether the stress at the j-th preset position is uniform, and the uniform force identification result at the j-th preset position is determined.

[0044] According to one embodiment of the present invention, the allowable force identification result at the jth preset position is determined based on the stress data at the jth preset position and the allowable stress value, including: if the stress data at the jth preset position is greater than or equal to the allowable stress value, the allowable force identification result at the jth preset position is 1; if the stress data at the jth preset position is less than the allowable stress value, the allowable force identification result at the jth preset position is 0.

[0045] For example, if the stress data at the jth preset position is greater than or equal to the allowable stress value, it means that the stress at the jth preset position exceeds the design allowable value, which may cause the slide beam to deform and make the slide beam unable to be accurately positioned. The allowable force identification result at the jth preset position is 1; if the stress data at the jth preset position is less than the allowable stress value, it means that the stress at the jth preset position is within the design range, and the allowable force identification result at the jth preset position is 0.

[0046] According to an embodiment of the present invention, determining the uniform force identification result at the j-th preset position according to the stress data at the j-th preset position and the standard deviation of the stress data includes: determining the uniform force identification result at the j-th preset position according to formula (3): , (3), where if is a conditional function, is the stress data at the jth preset position, is the preset multiple, is the standard deviation of stress data, m is the number of preset positions, j≤m, j and m are both positive integers.

[0047] According to one embodiment of the present invention, in formula (3), the following two situations can be expressed in the form of conditional functions: When the condition is met, it means that the stress data at the jth preset position is within an interval centered on the average stress data and with the standard deviation of the stress data twice the preset multiple as the interval length, and the value of the condition function is 0. When the condition is met, the value of the conditional function is 1. If the stress data at the jth preset position meets the above conditions, it means that the deviation between the stress data at the jth preset position and the mean is small, and the jth preset position is subjected to uniform force. Otherwise, it can be considered that the deviation between the stress data at the jth preset position and the mean is large, and the jth preset position is subjected to uneven force.

[0048] In this way, the force uniformity identification result at the jth preset position can be determined based on the stress data at the jth preset position and the standard deviation of the stress data. Whether the force at the jth preset position is uniform can be judged based on the deviation between the stress data at the jth preset position and the average stress data at m preset positions, thereby improving the accuracy of the force uniformity identification result.

[0049] According to an embodiment of the present invention, in step S106, it is determined whether to adjust the preset position according to the uniform force recognition result and the allowable force recognition result.

[0050] According to one embodiment of the present invention, step S106 includes: if the uniform force recognition result is 1, determining to adjust the preset position; if the force allowed recognition result is 1, determining to adjust the preset position; if the uniform force recognition result and the force allowed recognition result are both 0, determining not to adjust the preset position.

[0051] For example, if the uniform force recognition result at the jth preset position is 1, it means that the force at the jth preset position is uneven, and the slide beam may be tilted, resulting in the slide beam being unable to be accurately positioned. According to the stress data and the average stress data at the jth preset position, the preset position is adjusted to make the stress data at the jth preset position close to the average stress data; if the allowable force recognition result at the jth preset position is 1, it means that the stress at the jth preset position is too large, and the preset position is adjusted to make the stress data at the jth preset position less than the allowable stress value; if the uniform force recognition result and the allowable force recognition result at the jth preset position are both 0, it means that the force condition at the position is normal and no adjustment is required.

[0052] According to the method for accurately positioning a large-tonnage slide beam based on force monitoring according to an embodiment of the present invention, the influence of the slide beam material and environmental conditions on the design stress value can be accurately analyzed, and the allowable stress value can be determined. Based on the stress data and allowable stress values ​​at each preset position, the force uniformity and maximum allowable force condition of the slide beam can be evaluated, and the force uniformity identification result and the force allowable identification result can be determined. Further, according to the force uniformity identification result and the force allowable identification result, it is determined whether to adjust the slide beam, thereby improving the accuracy of the slide beam positioning. When determining the tensile strength magnitude function and the shear strength magnitude function, the tensile strength magnitude function and the shear strength magnitude function can be determined based on the benchmark tensile strength, benchmark shear strength, experimental temperature, experimental humidity, experimental tensile strength and experimental shear strength, accurately describing the influence of temperature and humidity changes on tensile strength and shear strength, thereby improving the accuracy and objectivity of the tensile strength magnitude function and the shear strength magnitude function. When determining the allowable stress value, the allowable stress value can be determined based on the safety factor, real-time tensile strength and real-time shear strength. During the calculation process, the allowable value of the bending stress and the allowable value of the shear stress of the slideway beam can be determined separately, and the allowable stress value can be determined based on the vector properties and interactions of the stresses, thereby improving the accuracy and objectivity of the allowable stress value. When determining the uniform force identification result, the uniform force identification result at the jth preset position can be determined based on the stress data at the jth preset position and the standard deviation of the stress data. Whether the force at the jth preset position is uniform can be judged based on the deviation between the stress data at the jth preset position and the average stress data at the m preset positions, thereby improving the accuracy of the uniform force identification result.

[0053] Figure 2 A block diagram of a large-tonnage slide beam precise positioning system based on force monitoring according to an embodiment of the present invention is exemplarily shown, the system comprising: a stress detection module, used to obtain stress data at a preset position of the slide beam through a stress sensor arranged at the preset position; a slide beam material module, used to obtain the slide beam material of the slide beam; an environment detection module, used to obtain environmental data through sensors arranged at the construction site, wherein the environmental data comprises: temperature data and humidity data; an allowable stress module, used to determine the allowable stress value according to the slide beam material and the environmental data; an identification result module, used to determine the force uniformity identification result and the force allowable identification result at the preset position according to the stress data and the allowable stress value; and an adjustment determination module, used to determine whether to adjust the preset position according to the force uniformity identification result and the force allowable identification result.

[0054] The present invention may be a method, an apparatus, a system and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for executing various aspects of the present invention.

[0055] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. A method for accurately positioning a large-tonnage slideway beam based on force monitoring, characterized in that: include: Obtain stress data at a preset position of the slideway beam by means of a stress sensor arranged at the preset position; Obtaining slide beam material of the slide beam; Environmental data is obtained through sensors installed at the construction site, wherein the environmental data includes: temperature data and humidity data; the allowable stress value is determined according to the slide beam material and the environmental data; the force uniformity identification result and the force allowable identification result at the preset position are determined according to the stress data and the allowable stress value; whether to adjust the preset position according to the force uniformity identification result and the force allowable identification result is determined; the allowable stress value is determined according to the slide beam material and the environmental data, including: determining the benchmark tensile strength and the benchmark shear strength according to the slide beam material; obtaining the experimental data in the historical experimental cycle According to, the experimental data include: experimental temperature, experimental humidity, experimental tensile strength and experimental shear strength; according to the benchmark tensile strength, the benchmark shear strength, the experimental temperature, the experimental humidity, the experimental tensile strength and the experimental shear strength, determine the tensile strength size function and the shear strength size function; according to the tensile strength size function, the shear strength size function, the benchmark tensile strength, the benchmark shear strength and the environmental data, determine the real-time tensile strength and the real-time shear strength; obtain the safety factor; according to the safety factor, the real-time tensile strength and the real-time shear strength, determine the allowable stress value.

2. The method for accurately positioning a large-tonnage slideway beam based on force monitoring according to claim 1 is characterized in that: According to the reference tensile strength, the reference shear strength, the experimental temperature, the experimental humidity, the experimental tensile strength and the experimental shear strength, determining the tensile strength magnitude function and the shear strength magnitude function, including: according to the formula , determine the first undetermined coefficient equation A of the tensile strength magnitude function and the second undetermined coefficient equation B of the shear strength magnitude function, where, is the base tensile strength, is the experimental tensile strength in the kth historical experimental cycle, is the experimental humidity in the kth historical experimental cycle, is the experimental temperature in the kth historical experimental cycle, is the preset temperature threshold, is the experimental shear strength in the kth historical experimental cycle, is the base shear strength, , , , , and is the first undetermined coefficient of the first undetermined coefficient equation A, , , , , and is the second undetermined coefficient of the second undetermined coefficient equation B; according to the benchmark tensile strength, the benchmark shear strength, the experimental temperature, the experimental humidity, the experimental tensile strength and the experimental shear strength, the first undetermined coefficient and the second undetermined coefficient are solved to obtain the solved values ​​of the first undetermined coefficient and the second undetermined coefficient; according to the solved values ​​of the first undetermined coefficient and the second undetermined coefficient, as well as the first undetermined coefficient equation A and the second undetermined coefficient equation B, the tensile strength magnitude function and the shear strength magnitude function are determined.

3. The method for accurately positioning a large-tonnage slideway beam based on force monitoring according to claim 1 is characterized in that: Determining the allowable stress value according to the safety factor, the real-time tensile strength and the real-time shear strength includes: according to the formula , determine the allowable stress value ,in, is the real-time tensile strength, is the real-time shear strength, is the safety factor.

4. The method for accurately positioning a large-tonnage slideway beam based on force monitoring according to claim 1 is characterized in that: Determining a force uniformity identification result and a force allowable identification result at a preset position according to the stress data and the allowable stress value, including: determining the force allowable identification result at the jth preset position according to the stress data at the jth preset position and the allowable stress value; determining the stress data standard deviation according to the stress data at each preset position; determining the force uniformity identification result at the jth preset position according to the stress data at the jth preset position and the stress data standard deviation.

5. The method for accurately positioning a large-tonnage slideway beam based on force monitoring according to claim 4 is characterized in that: According to the stress data at the j-th preset position and the allowable stress value, determining the allowable force identification result at the j-th preset position, including: if the stress data at the j-th preset position is greater than or equal to the allowable stress value, the allowable force identification result at the j-th preset position is 1; if the stress data at the j-th preset position is less than the allowable stress value, the allowable force identification result at the j-th preset position is 0.

6. The method for accurately positioning a large-tonnage slideway beam based on force monitoring according to claim 4 is characterized in that: According to the stress data at the j-th preset position and the standard deviation of the stress data, determining the force uniformity identification result at the j-th preset position includes: according to the formula , determine the uniform force identification result at the jth preset position , where if is a conditional function, is the stress data at the jth preset position, is the preset multiple, is the standard deviation of stress data, m is the number of preset positions, j≤m, j and m are both positive integers.

7. The method for accurately positioning a large-tonnage slideway beam based on force monitoring according to claim 1 is characterized in that: Determine whether to adjust the preset position according to the uniform force recognition result and the allowed force recognition result, including: if the uniform force recognition result is 1, determine to adjust the preset position; if the allowed force recognition result is 1, determine to adjust the preset position; if the uniform force recognition result and the allowed force recognition result are both 0, determine not to adjust the preset position.

8. A large-tonnage slideway beam precise positioning system based on force monitoring for executing the method according to any one of claims 1 to 7, characterized in that: include: A stress detection module, used to obtain stress data at a preset position of the slideway beam through a stress sensor arranged at the preset position; A slide beam material module, used to obtain the slide beam material of the slide beam; An environmental detection module is used to obtain environmental data through sensors set up at the construction site, wherein the environmental data includes: temperature data and humidity data; an allowable stress module is used to determine the allowable stress value based on the slide beam material and the environmental data; an identification result module is used to determine the force uniformity identification result and the force allowable identification result at the preset position based on the stress data and the allowable stress value; an adjustment determination module is used to determine whether to adjust the preset position based on the force uniformity identification result and the force allowable identification result.

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