Environmental data acquisition system for plateau railway concrete structure exposure test field

Abstract

The invention relates to the technical field of civil engineering materials, and discloses an environmental data acquisition system for a plateau railway concrete structure exposure test field, which is composed of a natural environment data acquisition system and a concrete structure local environment acquisition system. Environmental parameters measured by the natural environment data acquisition system comprise natural environment temperature, natural environment humidity, natural environment air pressure and the like; environmental parameters measured by the concrete structure local environment acquisition system comprise concrete structure surface temperature, concrete structure surface humidity, concrete surface moisture content, concrete structure negative-positive surface temperature difference, concrete structure surface radiation intensity and the like. According to the invention, measurement, acquisition and transmission of natural environment data in a concrete structure exposure test field and concrete local environment data are realized, and data support is provided for concrete structure exposure test research so as to meet requirements of exposure field concrete performance research.

Description

Technical Field

[0001] The invention relates to the technical field of civil engineering materials, and more specifically to an environmental data acquisition system for a plateau railway concrete structure exposure test site. Background Art

[0002] Meteorological observation instruments should be installed in the exposure test site to monitor the climate environment of the exposure test site in real time. Generally speaking, the natural environment data collection parameters monitored in the exposure test site include: ambient temperature, ambient humidity, atmospheric pressure, solar radiation parameters, strong wind parameters, etc. However, when it comes to plateau concrete structures, only measuring the natural environment parameters such as temperature, humidity, atmospheric pressure, solar radiation, strong wind, etc. is not enough to meet the research needs. It is necessary to conduct targeted environmental data measurements based on the particularity of concrete structures.

[0003] Therefore, it is necessary to establish an environmental data collection system for the plateau railway concrete exposure test site as a goal. While carrying out the natural environment data collection work, it is also necessary to carry out the data collection work of the local environment of the concrete structure. Summary of the invention

[0004] In view of this, the present invention proposes an environmental data acquisition system for a plateau railway concrete structure exposure test field, which realizes the measurement, acquisition and transmission of natural environment data and local concrete environment data in the concrete structure exposure test field, and provides data support for concrete structure exposure test research to meet the needs of concrete performance research in the exposure field.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] The invention discloses an environmental data acquisition system for a plateau railway concrete structure exposure test field, which consists of two parts: a natural environment data acquisition system and a concrete structure local environment acquisition system. The environmental parameters measured by the natural environment data acquisition system include: natural environment temperature, natural environment humidity, natural environment air pressure, natural environment wind speed, and natural environment sunlight radiation intensity; the environmental parameters measured by the concrete structure local environment acquisition system include: concrete structure surface temperature, concrete structure surface humidity, concrete surface moisture content, concrete structure yin-yang surface temperature difference, concrete structure surface radiation intensity, concrete surface local wind speed, concrete structure internal temperature, and concrete structure internal humidity.

[0007] Preferably, the environmental parameters measured by the natural environment data acquisition system have a measurement frequency that can be freely set within the range of [1s, 1m]; the environmental parameters measured by the concrete structure local environment acquisition system have a measurement frequency that can be freely set within the range of [1s, 1m].

[0008] Preferably, the parameter data measured by the natural environment data acquisition system and the concrete structure local environment acquisition system are transmitted in wired or wireless mode, wherein the wireless transmission mode is any one of 5G, 4G, WI FI, and Ethernet transmission modes.

[0009] Preferably, the power supply for the natural environment data acquisition system and the concrete structure local environment acquisition system is an electric energy-solar energy fusion power supply.

[0010] Preferably, the local environment acquisition system of the concrete structure needs to carry out measurement work on a cylindrical concrete entity, which should be located on a flat and open surface with smooth ground, no stagnant water, no weeds, and no soil or sandy ground, and have a diameter of not less than 2m and a height of not less than 2m.

[0011] Preferably, the surface of the cylindrical concrete entity needs to determine the longest and shortest sunshine time points on the cylindrical concrete entity structure according to the geographical location, and define them as the sunny side test point and the shady side test point respectively; two temperature sensors for measuring the sunny side and the shady side of the concrete are respectively buried in the concrete of the sunny side test point and the shady side test point, and the sensors are no more than 5 mm away from the outer edge of the cylindrical concrete entity; at the same moment, the temperature difference between the sunny side test point and the shady side test point is determined as the shady-sun side temperature difference at this moment.

[0012] Preferably, the radiometer used to measure the radiation intensity on the surface of the concrete structure and the anemometer used to measure the local wind speed on the surface of the concrete structure should be placed at a position with the same sunshine duration as the cylindrical concrete entity test point and at a distance of no more than 20 cm.

[0013] Preferably, when the environmental data of the natural environment data acquisition system and the concrete structure local environment acquisition system are abnormal, an alarm will be automatically issued, and the safety threshold of each environmental measurement parameter can be manually set.

[0014] In the present invention, the environmental data acquisition system for the structural exposure test site consists of two parts: a natural environment data acquisition system and a concrete structure local environment acquisition system. By setting up the natural environment data acquisition system, data on the environment of a certain geographical location and the environment of a certain large area can be collected; by setting up the concrete structure local environment acquisition system, environmental data of a specific concrete structure (such as a bridge pier, a span beam, a lining, etc.) can be collected. Whether it is the natural environment or the local environment of the concrete structure, the quantitative value of the above environmental data is an important influencing factor for analyzing the laws of changes in the mechanical properties, durability, long-term deformation performance, and crack resistance of plateau structural concrete, and can provide data support for the study of the laws of concrete structure exposure tests and the establishment of an "environment-performance" mapping relationship. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 This is a temperature data diagram of the positive side test points and the negative side test points in the concrete structure exposure test field in a specific embodiment. DETAILED DESCRIPTION

[0017] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0018] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] The invention provides an environmental data acquisition system for a plateau railway concrete structure exposure test field, which consists of two parts: a natural environment data acquisition system and a concrete structure local environment acquisition system.

[0021] Among them, the environmental parameters measured by the natural environment data acquisition system include: natural environment temperature, natural environment humidity, natural environment air pressure, natural environment wind speed, and natural environment sunlight radiation intensity.

[0022] The natural environment data acquisition system in the present invention mainly measures the data of the concrete service environment (ie, the environment of the geographical location).

[0023] The natural environment data acquisition system includes a temperature and humidity sensor for measuring the temperature and humidity of the natural environment, a differential pressure sensor for measuring the air pressure of the natural environment, an omnidirectional hot wire thermal anemometer for measuring the wind speed of the natural environment, and a solar radiation meter or light intensity meter for measuring the intensity of sunlight radiation in the natural environment.

[0024] The environmental parameters measured by the local environment acquisition system of concrete structure include: surface temperature of concrete structure, surface humidity of concrete structure, moisture content of concrete surface, temperature difference between the yin and yang sides of concrete structure, radiation intensity of concrete structure surface, local wind speed on concrete surface, temperature inside concrete structure, and humidity inside concrete structure.

[0025] The local environment acquisition system of concrete structure in the present invention mainly measures the response of concrete entity to the natural environment at different positions under the influence of the concrete service environment (i.e. the environment of the geographical location), including surface temperature and humidity, temperature and humidity of the positive and negative surfaces, internal temperature and humidity, surface wind speed, surface radiation intensity, etc.

[0026] In a further specific embodiment, the measurement frequency of the environmental parameters measured by the natural environment data acquisition system can be freely set within the range of [1s, 1m]; the measurement frequency of the environmental parameters measured by the concrete structure local environment acquisition system can be freely set within the range of [1s, 1m].

[0027] The plateau environment changes violently and frequently, which requires a certain degree of real-time measurement and real-time recording of environmental data in order to more accurately clarify the correspondence between "environmental changes-concrete internal environmental changes". The above measurement frequency can also be relaxed to [1s, 2h], that is, the measurement frequency can vary from [1s, 1m] to [1s, 2h].

[0028] In a further specific embodiment, the parameter data measured by the natural environment data acquisition system and the concrete structure local environment acquisition system are transmitted in wired or wireless mode, wherein the wireless transmission mode is any one of 5G, 4G, WIFI, and Ethernet transmission modes.

[0029] In a further specific embodiment, the power supply for the natural environment data acquisition system and the concrete structure local environment acquisition system is an electric-solar fusion power supply, which can meet the needs of all-weather power supply and ensure the effective operation of the system throughout the entire process.

[0030] In a further specific embodiment, the local environment acquisition system of the concrete structure needs to carry out measurement work on a cylindrical concrete entity. The cylindrical concrete entity should be located on a flat and open ground with a smooth surface, no stagnant water, no weeds, and no soil or sandy ground, and the diameter should be not less than 2m and the height should be not less than 2m.

[0031] In a further specific embodiment, the surface of the cylindrical concrete entity needs to determine the longest and shortest sunshine time points on the cylindrical concrete entity structure according to the geographical location, and define them as the sunny side test point and the shady side test point respectively; two temperature sensors for measuring the sunny side and the shady side of the concrete are respectively buried in the concrete of the sunny side test point and the shady side test point, and the sensors are no more than 5 mm away from the outer edge of the cylindrical concrete entity; at the same moment, the temperature difference between the sunny side test point and the shady side test point is determined as the shady-sun side temperature difference at this moment.

[0032] For concrete structures, the temperature difference between the shady and sunny sides in the plateau area is one of the important reasons for the cracking of concrete structures, which is also an important characteristic of the plateau climate.

[0033] In a further specific embodiment, the radiometer for measuring the radiation intensity on the surface of the concrete structure and the anemometer for measuring the local wind speed on the surface of the concrete structure should be placed at a position with the same sunshine duration as the cylindrical concrete entity test point and at a distance of no more than 20 cm.

[0034] In a further specific embodiment, when the environmental data of the natural environment data acquisition system and the concrete structure local environment acquisition system are abnormal, an alarm will be automatically issued, and the safety threshold of each environmental measurement parameter can be manually set.

[0035] Example:

[0036] The embodiment of the present invention provides an environmental data acquisition system for a plateau railway concrete structure exposure test site applied to the Lhasa area of ​​Tibet. The system consists of two parts: a natural environment data acquisition system and a concrete structure local environment acquisition system.

[0037] The main measurement parameters of the natural environment data acquisition system of the plateau railway concrete structure exposure test site in Lhasa, Tibet include: natural environment temperature, natural environment humidity, natural environment air pressure, natural environment wind speed, natural environment solar radiation intensity, wind direction and sunshine duration.

[0038] The main measurement parameters of the local environment acquisition system of the concrete structure at the plateau railway concrete structure exposure test site in Lhasa, Tibet include: surface temperature of the concrete structure, surface humidity of the concrete structure, moisture content of the concrete surface, temperature difference between the yin and yang sides of the concrete structure, radiation intensity of the concrete structure surface, local wind speed on the concrete surface, internal temperature of the concrete structure, internal humidity of the concrete structure, etc.

[0039] In the concrete exposure field in Lhasa, Tibet, a concrete structure entity with a diameter of 3m and a height of 2m has been cast. After determining the temperature positive and negative test points, the corresponding thermocouple temperature sensors were buried. The shortest distance between the buried depth of the sensor probe and the surface of the concrete entity was 2mm and 3mm respectively.

[0040] Figure 1 Shown are the temperature data of the positive and negative side test points in the concrete structure exposure test field in Lhasa, Tibet. By obtaining real and effective positive and negative side data of concrete structures in Tibet, a data basis is provided for subsequent research.

[0041] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0042] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An environmental data acquisition system for a plateau railway concrete structure exposure test site, characterized in that: It consists of two parts: the natural environment data acquisition system and the concrete structure local environment acquisition system; the environmental parameters measured by the natural environment data acquisition system include: natural environment temperature, natural environment humidity, natural environment air pressure, natural environment wind speed, and natural environment sunlight radiation intensity; the environmental parameters measured by the concrete structure local environment acquisition system include: concrete structure surface temperature, concrete structure surface humidity, concrete surface moisture content, concrete structure yin-yang surface temperature difference, concrete structure surface radiation intensity, concrete surface local wind speed, concrete structure internal temperature, and concrete structure internal humidity.

2. The environmental data acquisition system for a plateau railway concrete structure exposure test site according to claim 1 is characterized in that: The environmental parameters measured by the natural environment data acquisition system can be freely set at a measurement frequency within the range of [1s, 1m]. The environmental parameters measured by the local environment acquisition system of the concrete structure can be freely set at a measurement frequency within the range of [1s, 1m].

3. The environmental data acquisition system for a plateau railway concrete structure exposure test field according to claim 1 is characterized in that: The parameter data measured by the natural environment data acquisition system and the concrete structure local environment acquisition system are transmitted in wired or wireless mode, wherein the wireless transmission mode is any one of 5G, 4G, WIFI, and Ethernet transmission modes.

4. The environmental data acquisition system for a plateau railway concrete structure exposure test site according to claim 1 is characterized in that: The power supply for the natural environment data acquisition system and the concrete structure local environment acquisition system is an electric energy-solar energy fusion power supply.

5. The environmental data acquisition system for a plateau railway concrete structure exposure test site according to claim 1 is characterized in that: The local environment acquisition system of concrete structure needs to carry out measurement work on the cylindrical concrete entity. The cylindrical concrete entity should be located on a flat and open ground with smooth soil or sandy ground without stagnant water or weeds, and its diameter should not be less than 2m and its height should not be less than 2m.

6. The environmental data acquisition system for a plateau railway concrete structure exposure test site according to claim 5 is characterized in that: The surface of the cylindrical concrete entity needs to determine the longest and shortest sunshine time points on the cylindrical concrete entity structure according to the geographical location, and define them as the sunny side test point and the shady side test point respectively; the two temperature sensors used to measure the sunny side and the shady side of the concrete are buried in the concrete of the sunny side test point and the shady side test point respectively, and the sensors are no more than 5mm away from the outer edge of the cylindrical concrete entity; at the same moment, the temperature difference between the sunny side test point and the shady side test point is determined as the shady-sun side temperature difference at this moment.

7. The environmental data acquisition system for a plateau railway concrete structure exposure test site according to claim 5 is characterized in that: The radiometer used to measure the radiation intensity on the surface of the concrete structure and the anemometer used to measure the local wind speed on the surface of the concrete structure should be placed at a position with the same sunshine duration as the cylindrical concrete entity test point and at a distance of no more than 20 cm.

8. The environmental data acquisition system for a plateau railway concrete structure exposure test field according to claim 1 is characterized in that: When the environmental data of the natural environment data acquisition system and the local environment acquisition system of the concrete structure are abnormal, an alarm will be automatically issued, and the safety thresholds of each environmental measurement parameter can be set manually.

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