A temperature and humidity measuring device and arrangement method accompanying dam concrete pouring

Abstract

The application discloses a temperature and humidity measuring device and arrangement method accompanying dam concrete pouring, which comprises a threading connecting pipe and a supporting base arranged between two opposite formworks, the top of the supporting base is fixedly connected with the bottom of a vertically arranged adjustable telescopic mechanism, the top of the adjustable telescopic mechanism is provided with a protection frame, a temperature and humidity sensor is arranged in the protection frame, and the bottom side of the adjustable telescopic mechanism is slidably connected with the threading connecting pipe; the application can effectively avoid damage and displacement of the temperature and humidity sensor during concrete pouring construction, prolong the service life of the temperature and humidity sensor, improve the accuracy of the monitoring result of the temperature and humidity sensor, has strong construction adaptability in combination with the concrete construction process, and effectively avoids the phenomenon that the data line of the temperature and humidity sensor is damaged during pouring.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dam concrete construction of water conservancy and hydropower engineering, and particularly relates to a temperature and humidity measuring device and arrangement method accompanying dam concrete pouring. BACKGROUND

[0002] With the gradual enhancement of the comprehensive strength of China, the continuous improvement of the infrastructure construction capacity, and the gradual expansion of the number of water conservancy and hydropower engineering construction projects, various problems existing in the engineering construction and operation process are becoming more and more significant, especially the safety of the dam as the main body of the water conservancy and hydropower engineering, which is closely related to the service life of the overall project.

[0003] The dam of the water conservancy project mostly uses concrete with excellent mechanical properties and durability as the main material. Due to the influence of factors such as the limitation of the material itself, pouring process, complex working environment and bearing load, cracking phenomenon often occurs in the dam during the construction period and operation period, which increases the engineering operation and maintenance cost and affects the service life and safe operation.

[0004] Previous studies show that the cracking of the concrete dam is mostly caused by the volume expansion or shrinkage due to the uneven and change of the internal temperature and humidity of the structure, and the tensile stress in the structure exceeds a certain stress level under the constraint condition. In some areas in the northwest of China, due to the cold winter, the annual average temperature is lower than 5℃, and the annual extreme maximum temperature difference is even as high as 81℃. Influenced by this changeable and harsh climate environment, the internal temperature change of the concrete is more severe, and the change of the environmental temperature also has a certain influence on the internal humidity distribution and law of the concrete. The stress borne by the concrete is greater due to the interaction of the above factors, and the cracking is more likely to occur. Therefore, in order to better control the cracking of the concrete, it is necessary to study the internal temperature and humidity distribution and evolution of the dam concrete. In order to deeply study the stress influence caused by the temperature and humidity change of the concrete, the internal temperature and humidity data of the concrete need to be accurately obtained, and therefore a technology capable of accurately measuring the temperature and humidity of the specific position of the concrete is needed.

[0005] Many studies have been carried out by industry experts and scholars on the measurement method of the internal temperature and humidity of the concrete. Some feasible measuring devices and methods have been explored under different working conditions, but so far, the measurement of the internal humidity of the dam concrete is still a recognized problem. On the one hand, there is a lack of effective device for measuring the internal humidity of the concrete; on the other hand, the temperature and humidity sensor is not easy to arrange and is easy to be displaced and damaged during the construction of the dam concrete. The following can be optimized and improved:

[0006] (1) The sensor protection of temperature and humidity is not enough. When the dam is poured, sometimes three or even four grade concrete is selected according to the structure needs, and the large size aggregate in the aggregate will impact and extrude in the process of entering the warehouse and vibrating. The sensor for measuring temperature and humidity is a small precision instrument, which is easy to be damaged under the action of large external force.

[0007] (2) The positioning is not accurate enough, and displacement phenomenon is easy to occur. During the concrete vibrating and pulp lifting process, if the temperature and humidity sensor is not firmly laid, it will be displaced with the flow of the pulp. This displacement cannot be predicted and controlled, resulting in invalid measurement results, which cannot accurately reflect the temperature and humidity data of the dam concrete, and is not conducive to the further study of the temperature and humidity field distribution and evolution of the dam concrete.

[0008] (3) Poor construction adaptability. Many current humidity measuring devices and arrangement methods are based on laboratory research. Even if it is a large size concrete model, there is still a big difference compared with the dam. When a large number of sensors need to be embedded in the dam concrete, similar methods are difficult to directly copy and use.

[0009] (4) The data line of the temperature and humidity sensor is easy to be damaged during pouring. The data line of the current temperature and humidity sensor is directly embedded in the concrete, which is easy to be scoured by the concrete during pouring, and there is a phenomenon of being damaged.

[0010] Therefore, a new device and arrangement method is needed to avoid damage and displacement of the temperature and humidity sensor during concrete pouring construction, prolong the service life of the temperature and humidity sensor, improve the accuracy of the monitoring results of the temperature and humidity sensor, improve the construction adaptability, and effectively avoid the damage of the data line of the temperature and humidity sensor during pouring. SUMMARY

[0011] The purpose of the present application is to overcome the above-mentioned shortcomings, and provide a temperature and humidity measuring device and arrangement method accompanying dam concrete pouring, to avoid damage and displacement of the temperature and humidity sensor during concrete pouring construction, prolong the service life of the temperature and humidity sensor, improve the accuracy of the monitoring results of the temperature and humidity sensor, improve the construction adaptability, and effectively avoid the damage of the data line of the temperature and humidity sensor during pouring.

[0012] In order to solve the above technical problems, the technical scheme adopted by the present application is as follows: a temperature and humidity measuring device accompanying dam concrete pouring, which comprises a threading connecting pipe and a supporting base arranged between two opposite forms, the top of the supporting base is fixedly connected with the bottom of a vertically arranged adjustable telescopic mechanism, the top of the adjustable telescopic mechanism is provided with a protection frame, the protection frame is provided with a temperature and humidity sensor, and the bottom side of the adjustable telescopic mechanism is slidably connected with the threading connecting pipe.

[0013] Preferably, the data line of the temperature and humidity sensor passes through the adjustable telescopic mechanism and the connecting pipe inside and leads out to the outside of the template.

[0014] Preferably, the adjustable telescopic mechanism comprises a plurality of telescopic pipes which are sequentially sleeved together from top to bottom, and screw holes for passing through the jackscrews are formed on the surfaces of the telescopic pipes.

[0015] Preferably, the bottom of the telescopic pipe is provided with connecting holes on both sides for slidingly cooperating with the wire passing connecting pipes, and the top of the wire passing connecting pipe is provided with a wire passing hole for communicating with the inside of the telescopic pipe.

[0016] Preferably, the protection frame is a regular hexagonal prism frame structure, the protection frame is fixed at the center of the surface of the topmost telescopic pipe, the temperature and humidity sensor is arranged in the protection frame, and the side wall of the topmost telescopic pipe is provided with a through hole.

[0017] Preferably, a plurality of wire passing connecting pipes are arranged between the two opposite templates, and a connecting rod is fixedly connected between every two adjacent wire passing connecting pipes.

[0018] Preferably, the support base comprises a cross-shaped support frame, and the bottom of the cross-shaped support frame is fixed with a fixed net.

[0019] In addition, the application also discloses a layout method of the temperature and humidity measuring device for accompanying dam concrete pouring, which comprises the following steps:

[0020] S1: determining the monitoring scheme of the concrete, determining the embedding position of the temperature and humidity sensor, drawing a three-dimensional space layout grid of the temperature and humidity sensor, and obtaining the positioning coordinates of each temperature and humidity sensor;

[0021] S2: when the concrete is poured to the height position where the corresponding temperature and humidity sensor can be arranged, according to the positioning plane coordinates of the temperature and humidity sensor, the support base is first pre-installed at the corresponding position on the surface of the concrete, then the adjustable telescopic mechanism is installed on the support base, the length of the adjustable telescopic mechanism is adjusted, so that the height of the top protection frame of the adjustable telescopic mechanism is consistent with the height of the positioning coordinates of the corresponding temperature and humidity sensor;

[0022] S3: the wire passing connecting pipe passes through the template and sequentially passes through the bottom of the corresponding adjustable telescopic mechanism;

[0023] S4: the corresponding temperature and humidity sensor is bound in the protection frame, then the data line of the temperature and humidity sensor passes through the adjustable telescopic mechanism and the connecting pipe inside and leads out to the outside of the template, and finally the data line is connected with the paperless recorder;

[0024] S5: the concrete continues to be poured and the temperature and humidity sensor is submerged.

[0025] Further, the step S3 is specifically: the threading connection pipe one end is passed through one of the templates, then sequentially passes through the connecting hole of the bottom telescopic pipe of a plurality of adjustable telescopic mechanisms, and makes the threading connection pipe top threading hole aligns with the bottom telescopic pipe, finally the other end of the threading connection pipe is threaded out of the other template, after a plurality of threading connection pipes are arranged between the two opposite templates, each adjacent two threading connection pipes are fixedly connected through the connecting rod.

[0026] Further, the step S4 is specifically: the corresponding temperature and humidity sensor is bound in the protection frame, then the data line is passed into the adjustable telescopic mechanism through the perforation of the telescopic pipe side wall, then continues to pass downward until from the threading hole of the top of the threading connection pipe into the threading connection pipe, then finally from the end of the threading connection pipe to the outside of the template, finally the data line is connected with the paperless recorder.

[0027] The beneficial effects of the present application are:

[0028] 1、The present application can bury the temperature and humidity sensor at any position in the concrete through the height adjustment of the adjustable telescopic mechanism, so that the temperature and humidity data of the specific point can be measured, by burying the device at different positions, a sensor network can be formed, a few data with contrast significance are selected for comparison, and then the desired conclusion can be obtained, which has a positive guiding significance for the exploration of the principle of concrete temperature and humidity coupling and the dam concrete temperature control and crack prevention.

[0029] 2、The present application can bind a plurality of sensors together in the protection frame, and simultaneously measure a plurality of parameters such as temperature and humidity at the position, which is convenient for data arrangement and comparative analysis, and has important significance for the exploration of the principle of concrete temperature and humidity coupling.

[0030] 3、The present application can effectively reduce the damage of the sensor in the concrete pouring process through the protection frame, can fix the sensor at a specific position, reduce the position deviation of the sensor in the pouring process, and thus ensure the accuracy and reliability of the sensor data.

[0031] 4、The present application can adjust the length of the entire adjustable telescopic mechanism on site according to the actual situation, so as to accurately adjust the height of the protection frame and the temperature and humidity sensor inside it, and improve the accuracy of the temperature and humidity sensor monitoring result.

[0032] 5、The present application can well protect the sensor data line in the process of pouring concrete due to the protection of the data line by the adjustable telescopic mechanism and the connecting pipe, prevent damage to the data line in the pouring process, and ensure the accuracy and precision of the measurement.

[0033] 6. The present invention can form a mesh structure for a temperature and humidity sensor, and its support frame can effectively avoid problems such as shaking, tilting, and settling.

[0034] 7. This invention can effectively avoid damage and displacement of temperature and humidity sensors during concrete pouring, extend the service life of temperature and humidity sensors, improve the accuracy of temperature and humidity sensor monitoring results, and is highly adaptable to the concrete construction process. It also effectively avoids damage to the temperature and humidity sensor data cable during pouring. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a temperature and humidity measuring device used during the concrete pouring of a dam.

[0036] Figure 2 for Figure 1 Schematic diagram of the connection structure between the adjustable telescopic mechanism, the protective frame, and the support base;

[0037] Figure 3 for Figure 2 Exploded view of the adjustable telescopic mechanism and supporting base;

[0038] Figure 4 for Figure 1 Schematic diagram of the structure of the conduit for connecting wires;

[0039] Figure 5 This is a schematic diagram showing the distribution structure of temperature and humidity sensors after the concrete has been poured. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0041] like Figures 1 to 5 As shown, a temperature and humidity measuring device accompanying the concrete pouring of a dam includes a wire connecting pipe 2 and a support base 3 located between two opposing templates 1. The top of the support base 3 is fixedly connected to the bottom of a vertically arranged adjustable telescopic mechanism 4. The top of the adjustable telescopic mechanism 4 is provided with a protective frame 5, and a temperature and humidity sensor 6 is provided inside the protective frame 5. The bottom side of the adjustable telescopic mechanism 4 is slidably engaged with the wire connecting pipe 2.

[0042] Preferably, the data cable of the temperature and humidity sensor 6 passes through the adjustable telescopic mechanism 4 and the connecting pipe 2 and extends to the outside of the template 1. In this embodiment, the adjustable telescopic mechanism 4 and the connecting pipe 2 protect the data cable, preventing damage during concrete pouring.

[0043] Preferably, the adjustable telescopic mechanism 4 comprises a plurality of telescopic pipes 4.1 sleeved together from top to bottom, and screw holes for screwing the jackscrews 4.2 are formed on the surfaces of the telescopic pipes 4.1. When the length of the adjustable telescopic mechanism 4 is adjusted, the jackscrews 4.2 are loosened first, then the telescopic pipes 4.1 are slid, and finally the jackscrews 4.2 are tightened to fix the length of the entire adjustable telescopic mechanism 4. According to the actual situation, the length of the entire adjustable telescopic mechanism 4 can be adjusted on site, so that the height of the protection frame 5 and the temperature and humidity sensor 6 inside the protection frame 5 can be accurately adjusted, and the accuracy of the monitoring result of the temperature and humidity sensor is improved.

[0044] Preferably, the bottom telescopic pipe 4.1 is provided with connecting holes 4.3 on both sides of the bottom thereof for slidingly connecting with the threading connecting pipes 2, and the top of each threading connecting pipe 2 is provided with a threading hole 2.1 for communicating with the inside of the telescopic pipe 4.1. In this way, the threading connecting pipe 2 can be conveniently inserted into the telescopic pipe 4.1, so that the threading connecting pipe 2 and the telescopic pipe 4.1 are connected and communicated.

[0045] Preferably, the protection frame 5 is a regular hexagonal prism frame structure, the protection frame 5 is fixed at the center of the surface of the top telescopic pipe 4.1, the temperature and humidity sensor 6 is arranged in the protection frame 5, and the side wall of the top telescopic pipe 4.1 is provided with a perforation 4.4. As shown in the drawings, the regular hexagonal prism frame structure can isolate the coarse aggregate outside, so that the temperature and humidity sensor 6 inside will not be extruded even when vibrating; and the umbrella-shaped structure at the top can make the coarse aggregate with large particle size directly slide away from the outer surface when the concrete is poured into the warehouse, so that the temperature and humidity sensor 6 will not be directly pressed.

[0046] Preferably, a plurality of threading connecting pipes 2 are arranged between the two opposite formworks 1, and a connecting rod 7 is fixedly connected between every two adjacent threading connecting pipes 2. In this way, the plurality of threading connecting pipes 2 are connected with each other to form a whole, so that the entire structure is more stable and will not easily shake.

[0047] Preferably, the support base 3 comprises a cross-shaped support frame 3.1, and a fixed net 3.2 is fixed at the bottom of the cross-shaped support frame 3.1. The structure of the support base 3 increases the area of the bottom of the adjustable telescopic mechanism 4 in contact with the surface of the concrete, so that the adjustable telescopic mechanism 4 can stand on the surface of the concrete in the preset starting stage and is not easy to fall down, facilitating the subsequent arrangement process.

[0048] In addition, the application also discloses a layout method of the temperature and humidity measuring device accompanying the concrete pouring of a dam.

[0049] S1: determining the monitoring scheme of the concrete, determining the embedding position of the temperature and humidity sensor 6, drawing a three-dimensional space layout grid of the temperature and humidity sensor 6, and obtaining the positioning coordinates of each temperature and humidity sensor 6;

[0050] S2: when the concrete is poured to the height position where the corresponding temperature and humidity sensor 6 can be arranged, according to the positioning plane coordinates of the temperature and humidity sensor 6, first, the support base 3 is prepositioned at the corresponding position of the concrete surface, then the adjustable telescopic mechanism 4 is installed on the support base 3, the length of the adjustable telescopic mechanism 4 is adjusted, so that the height of the top protection frame 5 of the adjustable telescopic mechanism 4 is consistent with the positioning coordinate height of the corresponding temperature and humidity sensor 6;

[0051] S3: the threading connection pipe 2 is threaded through the formwork 1 and then through the bottom of the corresponding adjustable telescopic mechanism 4;

[0052] S4: the corresponding temperature and humidity sensor 6 is tied in the protection frame 5, then the data line thereof is threaded through the adjustable telescopic mechanism 4 and the connection pipe 2 inside and led out to the outside of the formwork 1, and finally the data line is connected with the paperless recorder;

[0053] S5: the concrete continues to be poured and the temperature and humidity sensor 6 is submerged.

[0054] Further, the step S3 is specifically that one end of the threading connection pipe 2 is threaded through one of the formworks 1, then through the connection holes 4.3 of the bottom telescopic pipes 4.1 of the plurality of adjustable telescopic mechanisms 4 in sequence, and the top threading hole 2.1 of the threading connection pipe 2 is aligned with the bottom of the telescopic pipe 4.1, and finally the other end of the threading connection pipe 2 is threaded out of the other formwork 1, after a plurality of threading connection pipes 2 are arranged between the two opposite formworks 1, the adjacent two threading connection pipes 2 are fixedly connected through the connecting rods 7.

[0055] Further, the step S4 is specifically that the corresponding temperature and humidity sensor 6 is tied in the protection frame 5, then the data line thereof is threaded through the perforations 4.4 of the side wall of the telescopic pipe 4.1 into the adjustable telescopic mechanism 4, then continues to be threaded downward until entering the threading connection pipe 2 from the threading hole 2.1 at the top of the threading connection pipe 2, and finally threaded out from the end of the threading connection pipe 2 to the outside of the formwork, and finally the data line is connected with the paperless recorder.

[0056] The above embodiments are only preferred technical solutions of the present application, and should not be regarded as limitations of the present application. The embodiments in the application and the features in the embodiments can be combined with each other as long as they do not conflict. The protection scope of the present application should be based on the technical solutions claimed in the claims, including the equivalent replacement solutions of the technical features claimed in the claims. That is, the equivalent replacement improvements within this range are also within the protection scope of the present application.

Claims

1. A temperature and humidity measuring device for use in conjunction with dam concrete placement, characterized by: It includes threading connecting pipe (2) and support base (3) arranged between two opposite formworks (1), the top of the support base (3) is fixedly connected with the bottom of the vertically arranged adjustable telescopic mechanism (4), the top of the adjustable telescopic mechanism (4) is provided with a protection frame (5), the protection frame (5) is provided with a temperature and humidity sensor (6), and the bottom side of the adjustable telescopic mechanism (4) is slidably connected with the threading connecting pipe (2); the adjustable telescopic mechanism (4) comprises a plurality of telescopic pipes (4.1) which are sleeved together from top to bottom, and screw holes for threading top tightening screws (4.2) are formed in the surfaces of the telescopic pipes (4.1); the protection frame (5) is a regular hexagonal prism frame structure, the center of the protection frame (5) is fixed to the surface of the topmost telescopic pipe (4.1), the temperature and humidity sensor (6) is arranged in the protection frame (5), and the side wall of the topmost telescopic pipe (4.1) is provided with a through hole (4.4); the support base (3) comprises a cross support frame (3.1), and the bottom of the cross support frame (3.1) is fixedly provided with a fixed net (3.2).

2. The temperature and humidity measuring device according to claim 1, wherein: The data line of the temperature and humidity sensor (6) is threaded through the inside of the adjustable telescopic mechanism (4) and the connecting pipe (2) and led out to the outside of the formwork (1).

3. The temperature and humidity measuring device according to claim 1, wherein: The bottom of the bottommost telescopic pipe (4.1) is provided with connecting holes (4.3) on both sides for slidably connecting with the threading connecting pipe (2), and the top of the threading connecting pipe (2) is provided with a threading hole (2.1) in communication with the inside of the telescopic pipe (4.1).

4. The temperature and humidity measuring device according to claim 1, wherein: A plurality of threading connecting pipes (2) are arranged between the two opposite formworks (1), and a connecting rod (7) is fixedly connected between every two adjacent threading connecting pipes (2).

5. A method of arranging the temperature and humidity measuring device for the concrete pouring of a dam according to any one of claims 1 to 4, characterized in that: It comprises the following steps: S1: determining the monitoring scheme of the concrete, determining the embedding position of the temperature and humidity sensor (6), drawing the three-dimensional space arrangement grid of the temperature and humidity sensor (6), and obtaining the positioning coordinates of each temperature and humidity sensor (6); S2: when the concrete is poured to the height position where the corresponding temperature and humidity sensor (6) can be arranged, according to the positioning plane coordinates of the temperature and humidity sensor (6), the support base (3) is first preset at the corresponding position on the surface of the concrete, then the adjustable telescopic mechanism (4) is installed on the support base (3), the length of the adjustable telescopic mechanism (4) is adjusted, so that the height of the top protection frame (5) of the adjustable telescopic mechanism (4) is consistent with the height of the positioning coordinates of the corresponding temperature and humidity sensor (6); S3: the threading connecting pipe (2) is threaded through the formwork (1) and the bottom of the corresponding adjustable telescopic mechanism (4) in sequence; S4: the corresponding temperature and humidity sensor (6) is tied in the protection frame (5), then the data line of the temperature and humidity sensor (6) is threaded through the inside of the adjustable telescopic mechanism (4) and the connecting pipe (2) and led out to the outside of the formwork (1), and finally the data line is connected with the paperless recorder; S5: the concrete continues to be poured and the temperature and humidity sensor (6) is submerged.

6. The method of claim 5, wherein the temperature and humidity measuring device is arranged to be attached to the dam concrete pouring. The step S3 is specifically: one end of the threading connection pipe (2) is threaded through one of the templates (1), then sequentially threaded through the connecting holes (4.3) of the bottommost telescopic pipes (4.1) of the plurality of adjustable telescopic mechanisms (4), and the top threading hole (2.1) of the threading connection pipe (2) is aligned with the bottom of the telescopic pipe (4.1), and finally the other end of the threading connection pipe (2) is threaded out of the other template (1), after a plurality of threading connection pipes (2) are arranged between the two opposite templates (1), every two adjacent threading connection pipes (2) are fixedly connected through the connecting rods (7).

7. The method of claim 5, wherein the temperature and humidity measuring device is arranged to be attached to the dam concrete pouring. The step S4 is specifically: the corresponding temperature and humidity sensor (6) is tied into the protection frame (5), then the data line is threaded into the adjustable telescopic mechanism (4) through the perforation (4.4) of the side wall of the telescopic pipe (4.1), then continues to thread down until entering the threading connection pipe (2) from the threading hole (2.1) at the top of the threading connection pipe (2), and finally threaded out from the end of the threading connection pipe (2) to the outside of the template, and finally the data line is connected with the paperless recorder.

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