CN114964384A - Health monitoring system for large-scale earthquake simulation research facility - Google Patents
Health monitoring system for large-scale earthquake simulation research facility Download PDFInfo
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- CN114964384A CN114964384A CN202210715156.2A CN202210715156A CN114964384A CN 114964384 A CN114964384 A CN 114964384A CN 202210715156 A CN202210715156 A CN 202210715156A CN 114964384 A CN114964384 A CN 114964384A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention provides a health monitoring system for a large-scale earthquake simulation research facility, which comprises a sensor, a data acquisition module, a cloud server, a data processing module, a remote monitoring terminal and an early warning module. The sensors comprise a dynamic strain gauge, a displacement sensor and an acceleration/speed sensor and are used for acquiring strain, displacement, acceleration and speed information of a large-scale earthquake simulation research facility; the data acquisition module converts signals acquired by the sensor into real-time data and uploads the real-time data to the cloud server; the data processing module processes, analyzes and judges the uploaded data, and the early warning module gives an alarm when the acquired signal exceeds a set alarm threshold value. The health monitoring system provided by the invention can monitor the strain, displacement and dynamic response of a large earthquake simulation research facility in real time, provide early warning and alarm, comprehensively master the running state of the research facility and ensure the structural safety.
Description
Technical Field
The invention relates to a health monitoring system for a large-scale earthquake simulation research facility, and belongs to the field of civil engineering health monitoring.
Background
The large-scale earthquake simulation research facility generally comprises an earthquake simulation vibrating table, a laboratory structure and other matched systems, is mainly used for earthquake simulation tests of large-scale or even full-scale models, more truly and accurately presents structural reaction and failure modes under an earthquake, and provides data support for researching the earthquake reaction and failure mechanism of an engineering structure.
The large-scale earthquake simulation shaking table has the characteristics of large table surface size, high test load, large excitation acceleration, wide motion displacement and working frequency range and the like, and can obviously influence the shaking table foundation, the laboratory structure and the surrounding environment in the operation process, so the health monitoring significance of large-scale earthquake simulation research facilities is great.
At present, no targeted health monitoring system and monitoring method exist for the large earthquake simulation research facilities.
Disclosure of Invention
The invention provides a health monitoring system for a large-scale earthquake simulation research facility, aiming at the problem that the health monitoring for the large-scale earthquake simulation research facility is lacked at present. The system monitors dynamic stress, dynamic strain, acceleration and speed of a vibration table foundation and a laboratory structure through a sensor, and data are collected by a data collection module and uploaded to a cloud server; processing and analyzing the uploaded collected data through a data processing module, judging whether the uploaded collected data exceed a preset alarm threshold value or not, and displaying a data processing result and a graph on a remote monitoring terminal in real time; and when the alarm threshold value is exceeded, the early warning module gives an alarm. The invention can monitor the stress strain and dynamic response of large earthquake simulation research facilities in real time and provide early warning and alarm.
Preferably, the dynamic strain gauges are arranged at the bottom of the peripheral span frame column, the mid-span bottom of the main structure of the roof truss and the mid-span bottom of the crane beam of the main structure of the large-scale earthquake simulation research facility
Preferably, the displacement, acceleration/speed sensors are arranged at the corners of the vibration table foundation, the ground 10m away from the vibration table, the bottom of the spanning structure column at the periphery of the vibration table foundation of the laboratory main body, the bottom of the spanning structure of the roof truss main structure and the central position of the filling wallboard.
Preferably, the data acquisition module, when the signal variation exceeded 10%, automatic triggering, can gather simultaneously and handle strain, displacement, acceleration and speed signal to upload to the cloud server in real time.
Preferably, the early warning threshold value is 0.0002 for dynamic strain, 0.1mm for displacement, 0.08g for acceleration and 10mm/s for speed.
Preferably, the table size of the vibration table in a large seismic modeling research facility is greater than 6 m.
The invention has the beneficial effects that: the system can monitor the stress strain and the dynamic response of the large-scale earthquake simulation research facility in real time, provide early warning and alarm, improve the structural safety while comprehensively mastering the running state of the research facility, and has higher engineering application value.
Drawings
FIG. 1 is a schematic diagram of a health monitoring system for a large seismic simulation research facility, according to an embodiment of the present invention.
Detailed Description
For a clear description of the solution according to the invention, preferred embodiments are given below and are described in detail with reference to the accompanying drawings. The following description is merely exemplary in nature and is in no way intended to limit the application or uses of the disclosure.
Referring to fig. 1, the health monitoring system for a large-scale earthquake simulation research facility in this embodiment may mainly include a dynamic strain gauge, an acceleration/velocity sensor, a data acquisition module, a cloud server, a data processing module, an early warning module, and a remote monitoring terminal. The system monitors dynamic stress, dynamic strain, acceleration and speed of a vibration table foundation and a laboratory structure of a large-scale earthquake simulation research facility through a sensor, and data are collected by a data collection module and uploaded to a cloud server; processing and analyzing the uploaded collected data through a data processing module, judging whether the uploaded collected data exceed a preset alarm threshold value or not, and displaying a data processing result and a graph on a remote monitoring terminal in real time; and when the alarm threshold value is exceeded, the early warning module gives an alarm. The invention can monitor the stress strain and dynamic response of large earthquake simulation research facilities in real time and provide early warning and alarm.
More specifically, for example, the dynamic strain gauge can be applied to stress-strain measurement in a motion state of the vibration table by adopting a wireless dynamic strain measurement and analysis technology, and meanwhile, the problem of inconvenient wiring of a measuring point is solved; the acceleration/speed sensor can adopt a magnetoelectric speed sensor, comprises two working gears of acceleration and speed, has a speed range of 0.6m/s and an acceleration range of 20m/s2, and can realize vibration acceleration/speed measurement with a bandwidth of 0.1-100 Hz; the data acquisition module can adopt an online monitoring and analyzing system, and can realize the acquisition of various physical quantities such as strain, stress, acceleration, speed, displacement, temperature, wind speed and the like; the cloud server can adopt an ECS general g6 Ali cloud server to realize data transmission and storage; the data processing module can adopt a PaddleDetection module of python, and a customized data processing module is formed by module extension development according to project requirements; the early warning module and the remote monitoring terminal can monitor early warning software and terminals based on windows.
In practical application, the dynamic strain gauges may be arranged at the bottom of a peripheral cross-frame column, the top of the frame column, the bottom of a main structure span of a roof frame, and the bottom of a crane beam span of a main structure of a large-scale seismic simulation research facility (for example, the size of a table top is not less than 6m × 6m), and the total number of the dynamic strain gauges is 10 groups or other numbers according to needs.
The displacement and acceleration/speed sensors can be arranged at the corners of the vibrating table foundation, the ground 10m away from the vibrating table, the bottoms of the spanning structure columns on the periphery of the vibrating table foundation of the laboratory main body, the bottoms of the spanning structures of the roof truss main structure and the central positions of the filling wallboards, and the total number of the displacement and acceleration/speed sensors is 10 groups or other numbers.
It can be set that the data acquisition module acquisition system is automatically triggered when any signal of strain, acceleration or speed changes by more than 10% or other values. The data acquisition module can monitor, acquire and process static strain, dynamic strain, acceleration and speed signals simultaneously and upload the signals to the cloud server in real time.
The early warning threshold value can be set to 0.0002 for dynamic strain, 0.1mm for displacement, 0.08g for acceleration and 10mm/s for speed. When the acquired data exceeds the corresponding threshold value, the alarm early warning module starts to work to realize alarm. Of course, other pre-warning thresholds may be set according to specific situations.
The health monitoring system for the large-scale earthquake simulation research facility, which is provided by the embodiment, can monitor the stress strain and the dynamic response of the large-scale earthquake simulation research facility in real time, provide early warning and alarm, improve the structural safety while comprehensively mastering the operation state of the research facility, and has higher engineering application value.
While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It will be understood by those skilled in the art that variations and modifications of the embodiments of the present invention can be made without departing from the scope and spirit of the invention.
Claims (6)
1. A health monitoring system for a large seismic simulation research facility, comprising: the method comprises the following steps: dynamic strain gauges, acceleration/velocity sensors; a data acquisition module; a cloud server; a data processing module; the early warning module and the remote monitoring terminal;
the dynamic strain gauge and the acceleration/speed sensor are arranged on the large-scale earthquake simulation research facility and are used for monitoring dynamic stress, dynamic strain, acceleration and speed;
the data acquisition module is connected with the dynamic strain gauge and the acceleration/speed sensor and is used for acquiring monitored data;
the cloud server is connected with the data acquisition module and is used for receiving the data uploaded by the data acquisition module;
the data processing module is connected with the cloud server and used for processing and analyzing the uploaded collected data and judging whether the uploaded collected data exceeds a preset alarm threshold value or not;
the early warning module is connected with the data processing module and is used for giving an alarm according to the processing result of the data processing module; and
and the remote monitoring terminal is connected with the early warning module and the data processing module and is used for displaying a data processing result and a graph.
2. A health monitoring system for a large seismic simulation research facility according to claim 1, wherein: the dynamic strain gauges are arranged at the bottom of a peripheral span frame column of a vibrating table foundation of a main structure of the large-scale earthquake simulation research facility, the middle bottom of a main structure span of a roof truss and the middle bottom of a crane beam span.
3. A health monitoring system for a large seismic simulation research facility according to claim 1, wherein: the acceleration/speed sensor is arranged at the corner of the vibration table foundation, the ground 10m away from the vibration table, the bottom of a cross-structure column at the periphery of the vibration table foundation of the main body of the laboratory, the middle bottom of a main structure of the roof truss and the central position of the filling wallboard.
4. A health monitoring system for a large seismic simulation research facility according to claim 1, wherein: when the signal change exceeds 10%, the data acquisition module is triggered automatically, can acquire and process strain, displacement, acceleration and speed signals simultaneously, and uploads to the cloud server in real time.
5. A health monitoring system for a large seismic simulation research facility according to claim 1, wherein: in the alarm threshold values, the dynamic strain early warning threshold value is 0.0002, the displacement early warning threshold value is 0.1mm, the acceleration early warning threshold value is 0.08g, and the speed early warning threshold value is 10 mm/s.
6. A health monitoring system for a large seismic simulation research facility according to claim 1, wherein: the size of the table top of the vibration table in a large earthquake simulation research facility is larger than 6m by 6 m.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116256016A (en) * | 2022-11-30 | 2023-06-13 | 广东省建筑设计研究院有限公司 | Whole process health monitoring system of building structure system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116256016A (en) * | 2022-11-30 | 2023-06-13 | 广东省建筑设计研究院有限公司 | Whole process health monitoring system of building structure system |
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