Dynamic testing device for simulating steel pipe core concrete environment
By designing a dynamic test device that simulates the core concrete environment of steel pipes, the problem of inaccurate deformation measurement of steel pipe concrete is solved, and the accurate deformation measurement of steel pipe concrete at different ambient temperatures is achieved. The most accurate test data is provided, which helps to select the appropriate type of expansion agent and control its dosage, solves the separation problem caused by shrinkage of steel pipe concrete, and broadens the application prospects of steel pipe concrete.
Patent Information
- Application Number
- CN202421772722.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-24
AI Technical Summary
In the prior art, the deformation measurement of steel pipe concrete is inaccurate and cannot effectively simulate the environment of steel pipe concrete in actual projects, resulting in the obtained data not truly reflecting the deformation of steel pipe concrete.
Design a dynamic testing device that simulates the concrete environment of steel pipe core, including test molds, pressure sensors, heating parts and measurement components. The expansion pressure of concrete to the inner wall of the steel pipe is measured by a pressure sensor arranged on the inner wall of the mold, the measurement component measures the vertical deformation of the concrete, and simulates different ambient temperatures through the heating parts.
Accurate deformation measurement of steel pipe concrete at different ambient temperatures is achieved, the most accurate and reliable test data is provided, which helps to select the appropriate type of expansion agent and control its dosage, solves the separation problem caused by shrinkage of steel pipe concrete, and broadens the application prospects of steel pipe concrete.
Smart Images
Figure CN222784096U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete performance testing, in particular to a dynamic testing device for simulating a steel tube core concrete environment. Background Art
[0002] Steel tube concrete combines the advantages of high compressive resistance of concrete and high bending resistance of steel. It not only increases the compressive strength of concrete by several times, but also improves the stiffness of the steel tube, achieving the effect of 1 plus 1 being greater than 2. It is widely used in practical projects such as large foundations, high-rise buildings and long-span bridges.
[0003] However, the main factor restricting the development of steel tube concrete is the separation problem between the core concrete and the steel tube. From the perspective of the core concrete, one of the main reasons for the separation problem is the shrinkage of the concrete under the sealing constraint of the steel tube, including autogenous shrinkage, thermal shrinkage and creep, which leads to asynchronous deformation between the concrete and the steel tube, and peeling and separation at the interface. For this reason, steel tube concrete is often mixed with expansion agents to compensate for shrinkage in order to reduce the separation caused by concrete shrinkage. At the same time, most expansion agents are highly sensitive to temperature, and steel tube concrete of different strengths has different requirements for the type and dosage of expansion agents. Therefore, for steel tube concrete of different strengths and service environments, the influence of expansion agents on the volume deformation of concrete needs to be studied during the mix design process to determine the optimal type and dosage of expansion agents.
[0004] At present, the detection methods of conventional concrete volume deformation are relatively mature, mainly including embedded strain gauge, capacitance micrometer method, staged self-shrinkage test method using vertical micrometer and non-contact displacement sensor, non-contact displacement sensor test method, annular constraint test method, plate constraint test method, volume method, buoyancy method, and the types of sensors include micrometer, eddy current displacement sensor, laser displacement sensor, vibrating wire meter, strain gauge, etc. However, the measurement methods for the volume deformation of steel tube concrete are mostly carried out according to the volume deformation of ordinary concrete. This measurement method is relatively inaccurate and cannot simulate the environment of steel tube concrete in actual engineering. The data obtained cannot truly reflect the deformation of steel tube concrete. Utility Model Content
[0005] In view of the defects existing in the prior art, the purpose of the utility model is to provide a dynamic testing device for simulating the environment of steel tube core concrete, so as to solve the problem of inaccurate deformation measurement of steel tube concrete in the prior art.
[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0007] The present application provides a dynamic testing device for simulating a steel tube core concrete environment, comprising:
[0008] a test mold having a cavity therein for filling the concrete sample;
[0009] At least two pressure sensors are arranged at intervals on the inner wall of the test mold along the height direction of the test mold, and are used to measure the pressure of concrete at different heights on the tube wall of the test mold;
[0010] A heating element, which is coated on the outer side of the tube wall of the test mold and is used to heat the concrete sample in the test mold;
[0011] A measuring assembly is used to measure the vertical deformation of the concrete sample in the test mold.
[0012] In some optional embodiments, the top of the test mold has an opening, and the measurement assembly includes:
[0013] A holding plate, which is used to be placed on the upper surface of the concrete sample in the test mold;
[0014] A micrometer is fixed above the test mold, and a pointer of the micrometer passes through an opening at the top of the test mold and contacts the holding plate.
[0015] In some optional embodiments, a test bracket is further included, and the test bracket includes:
[0016] A base, on which the test mold is placed;
[0017] A first leveling member, which is disposed on the base and is used to adjust the level of the base;
[0018] A fixing frame is connected to the base, and the micrometer is fixed on the fixing frame and is located above the test mold.
[0019] In some optional embodiments, the first leveling member includes at least two leveling screws spaced apart on the bottom surface of the base.
[0020] In some optional embodiments, the first leveling member further includes a base level, which is placed on the base and is used to measure the levelness of the base.
[0021] In some optional embodiments, the fixing frame includes:
[0022] Two vertical support rods are respectively vertically set on both sides of the test mold and connected to the base;
[0023] A transverse support rod, which is connected between the two vertical support rods through a second leveling member and is located above the test mold, and the micrometer is fixed on the transverse support rod;
[0024] A micrometer level is arranged on the above-mentioned transverse support rod and is used to measure the horizontality of the above-mentioned transverse support rod.
[0025] In some optional embodiments, the test mold includes two arc plates and a circular bottom plate that are interlocked with each other. The two arc plates are detachably connected and interlocked to form a tubular structure. The circular bottom plate is detachably connected to the tubular structure to close the bottom of the tubular structure.
[0026] In some optional embodiments, the pressure sensor has an accuracy of 0.01 kN and a measuring range of 0-3 kN, and the heating element has an accuracy of 0.1°C and a measuring range of 0-150°C.
[0027] In some optional embodiments, the micrometer has an accuracy of 0.001 mm and a measuring range of 0-10 mm.
[0028] In some optional embodiments, a data acquisition system is further included, which is connected to the pressure sensor and the micrometer signal.
[0029] Compared with the prior art, the advantages of the utility model are:
[0030] Not only can the expansion pressure of concrete at different positions on the inner wall of the steel tube be measured by the pressure sensor set on the inner wall of the mold, but the measuring component can also measure the vertical deformation of the concrete. At the same time, by adjusting the temperature controller, on the one hand, the deformation of the steel tube concrete at different ambient temperatures can be obtained; on the other hand, by simulating the temperature history of the core concrete in the solid structure, the volume deformation of the steel tube core concrete can be accurately obtained. In addition, the concrete samples in the test mold can be monitored and recorded in real time for a long time, providing the most accurate and reliable test data for the measurement of the volume deformation of the steel tube concrete, so as to better select the type of expansion agent and control the dosage of the expansion agent, solve the problem of steel tube concrete separation caused by the shrinkage of steel tube concrete, and further broaden the application prospects of steel tube concrete. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0032] Figure 1 It is a cross-sectional schematic diagram of a dynamic testing device for simulating a steel tube core concrete environment according to the utility model;
[0033] Figure 2The utility model is a structural schematic diagram of a dynamic testing device for simulating a steel tube core concrete environment.
[0034] In the figure: 1. test mold; 2. pressure sensor; 3. heating element; 31. temperature controller; 4. measuring assembly; 41. holding plate; 42. micrometer; 5. test bracket; 51. base; 52. first leveling piece; 521. leveling screw; 522. base level; 53. fixing frame; 531. vertical support rod; 532. horizontal support rod; 533. second leveling piece; 534. micrometer level; 6. data acquisition system. DETAILED DESCRIPTION
[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0036] The following is a further detailed description of an embodiment of a dynamic testing device for simulating a steel tube core concrete environment according to the utility model in conjunction with the accompanying drawings.
[0037] like Figure 1 and Figure 2 As shown, the present application provides a dynamic testing device for simulating the concrete environment of a steel tube core, including a test mold 1, a pressure sensor 2, a heater 3 and a measuring assembly 4. The test mold 1 is used to load a concrete sample, and the temperature inside the test mold 1 is adjusted by the heater 3. The pressure sensor 2 arranged on the inner wall of the test mold 1 measures the expansion pressure of the concrete at different positions on the inner wall of the steel tube, and the measuring assembly 4 measures the vertical deformation of the concrete, so that the deformation of the steel tube concrete at different ambient temperatures can be accurately obtained.
[0038] Specifically, the interior of the test mold 1 has a cavity for filling a concrete sample; at least two pressure sensors 2 are provided and are arranged on the inner wall of the test mold 1 at intervals along the height direction of the test mold 1, so as to measure the wall pressure of concrete at different heights on the test mold 1; the heating element 3 is coated on the outer side of the wall of the test mold 1, so as to heat the concrete sample in the test mold 1; the measuring component 4 is used to measure the vertical deformation of the concrete sample in the test mold 1.
[0039] It can be understood that, since the test mold 1 has a certain height and cross-sectional area, the concrete samples located at different heights of the test mold 1 are subjected to different pressures and have different deformation capabilities. In the present application, the test mold 1 is a cylindrical steel pipe, so its height direction is its axial direction, and the radius is constant. Three pressure sensors 2 are arranged at equal intervals to measure the expansion pressure of concrete samples at various height positions, and compare the measurement results to determine the relationship between the height of the concrete and the expansion pressure.
[0040] In other embodiments, the test mold can also select different shapes as needed, and the arrangement of the pressure sensors can also be set in number and spacing according to measurement needs. However, it should be noted that when pouring the concrete sample into the cavity of the test mold 1, the concrete sample should be compacted to avoid voids, and during the compaction process, the pressure sensor 2 should be prevented from shifting.
[0041] The heating element 3 is used to heat the concrete sample. During the experiment, the heater can be controlled to rise to a set temperature and heated for a set time to determine the relationship between temperature and concrete expansion pressure. It should be noted that the heating element 3 should completely cover the outer wall of the entire test mold 1 to avoid causing local temperature to be too high or too low, resulting in test errors.
[0042] In this example, the heating element 3 is a silicone heating plate, and is tightly wrapped around the outer wall of the cylindrical steel pipe. The heating element 3 can be controlled by a temperature controller 31 .
[0043] In some optional embodiments, the top of the test mold 1 has an opening, and the measuring assembly 4 includes a holding plate 41 and a dial gauge 42. The holding plate 41 is used to be placed on the upper surface of the concrete sample in the test mold 1; the dial gauge 42 is fixed above the test mold 1, and the pointer of the dial gauge 42 passes through the opening at the top of the test mold 1 and contacts the holding plate 41.
[0044] It can be understood that since the concrete sample is a fluid after being poured into the test mold 1, a holding plate 41 is provided to facilitate measurement of the micrometer 42. The holding plate 41 may be a glass sheet, and the weight of the holding plate 41 has a negligible effect on the pressure of the concrete sample. The micrometer 42 is fixedly provided, and the pointer of the micrometer 42 is in contact with the holding plate 41. When the concrete sample expands with the passage of temperature and time, its height in the test mold 1 will change accordingly, and at this time, the height of the holding plate 41 will also change accordingly, thereby driving the pointer of the micrometer 42 to move.
[0045] In this example, the expansion pressure and deformation of the concrete sample are measured by the pressure sensor 2 and the micrometer 42 respectively. Therefore, the test mold 1 is a cylindrical steel pipe with an open end. When the concrete sample is poured into the cavity of the test mold 1, it can be kept at a certain distance from the top opening to reserve space for the expansion of the concrete sample. Then the holding plate 41 is placed, and the holding plate 41 provides a contact surface for the pointer of the micrometer 42 to contact with. By reading the reading of the micrometer, the deformation of the concrete sample can be obtained. It should be noted that the contact between the pointer and the holding plate 41 here means that there is no gap between the pointer and the holding plate 41 at this time, and the pointer has no interaction force on the holding plate 41.
[0046] In some optional embodiments, a test bracket 5 is further included, and the test bracket 5 includes a base 51, a first leveling member 52 and a fixing frame 53, the base 51 is used to place the test mold 1; the first leveling member 52 is arranged on the base 51, and is used to adjust the horizontality of the base 51; the fixing frame 53 is connected to the base 51, and the micrometer 42 is fixed on the fixing frame 53 and is located above the test mold 1.
[0047] That is, the test mold 1 is placed on the base 51 for measurement, so that it is not limited by the scene restrictions. Even in a non-horizontal position, the axis of the test mold 1 can be made to coincide with the plumb plane through the first leveling member 52 on the base 51. The micrometer 42 is fixed on the fixing frame 53, so that the integrity of the test device is higher. On the other hand, the micrometer 42 maintains a stable relative position with the test mold 1 through the fixing frame 53, which can also improve the accuracy during the measurement process.
[0048] In some optional embodiments, the first leveling member 52 includes at least two leveling screws 521 spaced apart on the bottom surface of the base 51 .
[0049] Taking the present application as an example, the first leveling member 52 includes four leveling screws, which are respectively located at the four vertices of the rectangular base 51. The leveling screws 521 are threadedly matched with the base 51, and the length of the leveling screws extending from the base 51 is adjusted by rotating the leveling screws 521, so that different leveling screws can be adjusted respectively to adjust the levelness of the base 51.
[0050] Of course, in other embodiments, the base 51 may also be leveled by telescopic members or the like.
[0051] In order to facilitate leveling, the center of mass of the test mold 1 needs to coincide with the center of mass of the test bracket 5. For example, in this example, the test mold 1 is a cylindrical steel pipe, the base 51 is rectangular, and the fixing frame 53 is axisymmetric. The axis of the test mold 1 is perpendicular to the top surface of the base 51 and coincides with the center of mass of the base 51, and the axis of symmetry of the fixing frame 53 coincides with the axis of the test mold 1. In this way, it can be ensured that when the levelness of the base 51 is adjusted, the levelness of the test mold 1 is adjusted.
[0052] Preferably, the first leveling member 52 further includes a base level 522 , which is placed on the base 51 and is used to measure the levelness of the base 51 .
[0053] It can be understood that the base level 522 is used to assist the leveling screw 521, making the leveling process of the base 51 more intuitive and efficient. In this example, there are two base level 522, which are symmetrically arranged on both sides of the radial direction of the cylindrical steel pipe. This is because the test mold 1 is located at the center of the base 51, so it is impossible to arrange a level at the center of the base 51. In order to accurately adjust the level of the base 51, two level 522 are symmetrically arranged on both sides of the test mold 1.
[0054] In some optional embodiments, the above-mentioned fixed frame 53 includes two vertical support rods 531, a transverse support rod 532 and a micrometer level 534. The two vertical support rods 531 are vertically set up on both sides of the above-mentioned test mold 1 and are connected to the above-mentioned base 51; the transverse support rod 532 is connected between the two vertical support rods 531 through a second leveling member 533, and is located above the above-mentioned test mold 1, and the above-mentioned micrometer 42 is fixed on the above-mentioned transverse support rod 532; the micrometer level 534 is arranged on the above-mentioned transverse support rod 532, and is used to measure the horizontality of the above-mentioned transverse support rod 532.
[0055] It can be understood that the two vertical support rods 531 are symmetrically arranged on both sides of the test mold 1, the transverse support rod 532 is arranged above the test mold 1 through the two vertical support rods 531, and the micrometer 42 is fixed on the transverse support rod 532. By adjusting the horizontality of the transverse support rod 532, the horizontality of the micrometer 42 is adjusted to ensure that the pointer of the micrometer 42 is in a vertical state when it contacts the holding plate 41 on the top surface of the concrete sample, thereby ensuring the measurement accuracy. The micrometer level 534 is convenient for observation when the transverse support rod 532 is leveled.
[0056] In this example, two micrometer levels 534 are symmetrically arranged with the micrometer 42 as the symmetry center.
[0057] In some optional embodiments, the test mold 1 includes two arc plates and a circular bottom plate that are interlocked with each other, the two arc plates are detachably connected and interlocked to form a tubular structure, and the circular bottom plate is detachably connected to the pipe pile structure to close the bottom of the pipe pile structure.
[0058] It can be understood that the test mold 1 is assembled by an arc plate and a circular bottom plate to form a cylindrical tubular structure. Its purpose is to facilitate the installation and removal of the pressure sensor in the tube wall. At the same time, after the test reaches a certain age and the deformation of the steel tube concrete is stable, the mold is disassembled and the concrete sample in the mold is cleaned for use in the next test, thereby improving the utilization rate of the test device.
[0059] In some optional embodiments, the pressure sensor 2 has an accuracy of 0.01 kN and a measuring range of 0-3 kN, and the heating element 3 has an accuracy of 0.1°C and a measuring range of 0-150°C.
[0060] In other embodiments, pressure sensors and heating elements with corresponding accuracy may be selected according to measurement requirements.
[0061] In some optional embodiments, the micrometer 42 has an accuracy of 0.001 mm and a measuring range of 0-10 mm.
[0062] In other embodiments, a micrometer with corresponding accuracy and range can be selected according to measurement requirements.
[0063] In some optional embodiments, the dynamic testing device further includes a data acquisition system, which is signal-connected to the pressure sensor 2 and the micrometer 42 .
[0064] It can be understood that the data acquisition system is used to collect data from the pressure sensor 2 and the micrometer 42, and analyze the deformation of the concrete sample at different ages and temperatures based on the collected data, providing the most accurate and reliable test data for the measurement of the volume deformation of the steel tube concrete, so as to better select the type of expansion agent and control the dosage of the expansion agent.
[0065] The working principle of the embodiment of the present application is as follows: after the test mold 1 is assembled, the fresh concrete samples are loaded into the cylindrical test mold 1 in layers and vibrated to make them dense. It should be noted that during the loading of the concrete samples, attention should be paid to the position of the pressure sensor 2 arranged on the inner wall of the test mold 1 to avoid displacement due to vibration and loading of the concrete samples; the test mold 1 loaded with the concrete sample is placed on the base 51, and the level of the base 51 is adjusted by the first leveling member 52, so that the test mold 1 is stable and placed horizontally; the heating element 3 is tightly wrapped on the outer wall of the test mold 1, and the temperature of the heating element 3 is adjusted to The required temperature; two vertical support rods 531 are symmetrically fixed on the base 51 and located on both sides of the radial direction of the test mold 1, and the transverse support rod 532 is leveled and fixed on the top of the test mold 1; the dial gauge 42 is fixed on the transverse support rod 532, and the holding plate 41 is placed on the top of the concrete sample, and the pointer of the dial gauge 42 is just in contact with the top surface of the holding plate 41; the pressure sensor 2 and the dial gauge 42 are connected to the data acquisition system for data detection; after the test reaches a certain age and the deformation of the concrete sample is stable, turn off the power, remove the corresponding instruments, and disassemble and clean the test mold 1 for use in the next test.
[0066] The utility model discloses a dynamic testing device for simulating a core concrete environment. The pressure sensor 2 arranged on the inner wall of the mold 1 measures the expansion pressure of concrete at different positions on the inner wall of the steel pipe, and the measuring component 4 measures the vertical deformation of the concrete, so that the deformation of the steel pipe concrete at different ambient temperatures can be accurately obtained. By placing the test mold 1 on the base 51 for measurement, it is not limited by scene restrictions. Even in a non-horizontal position, the axis of the test mold 1 can be made to coincide with the plumb plane through the first leveling member 52 on the base 51 to ensure measurement accuracy. The horizontality of the micrometer 42 is adjusted by adjusting the horizontality of the transverse support rod 532 to ensure that the pointer of the micrometer 42 is in a vertical state when it contacts the holding plate 41 on the top surface of the concrete sample, so as to ensure measurement accuracy. The measuring mold 1 is assembled by an arc plate and a circular bottom plate to form a cylindrical tubular structure, which is convenient for installing and disassembling the pressure sensor in the pipe wall. At the same time, after the test reaches a certain age and the deformation of the steel pipe concrete is stable, the mold is disassembled to clean the concrete sample in the mold for use in the next test, thereby improving the utilization rate of the testing device.
[0067] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0068] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.
[0069] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. A dynamic testing device for simulating a steel tube core concrete environment, characterized in that: include: A test mold (1) having a cavity therein for filling a concrete sample; At least two pressure sensors (2) are arranged at intervals on the inner wall of the test mold (1) along the height direction of the test mold (1), and are used to measure the pressure of concrete at different heights on the tube wall of the test mold (1); A heating element (3), which is coated on the outer side of the tube wall of the test mold (1) and is used to heat the concrete sample in the test mold (1); A measuring assembly (4) is used to measure the vertical deformation of the concrete sample in the test mold (1).
2. The dynamic testing device according to claim 1, characterized in that: The top of the test mold (1) has an opening, and the measuring component (4) comprises: A holding plate (41) for being placed on the upper surface of the concrete sample in the test mold (1); A micrometer (42) is fixed on the top of the test mold (1), and the pointer of the micrometer (42) passes through the opening at the top of the test mold (1) and contacts the holding plate (41).
3. The dynamic testing device according to claim 2, characterized in that: Also included is a test stand (5), the test stand (5) comprising: A base (51), on which the test mold (1) is placed; A first leveling member (52), which is disposed on the base (51) and is used to adjust the levelness of the base (51); A fixing frame (53) is connected to the base (51), and the micrometer (42) is fixed on the fixing frame (53) and is located above the test mold (1).
4. The dynamic testing device according to claim 3, characterized in that: The first leveling member (52) comprises at least two leveling screws (521) which are arranged at intervals on the bottom surface of the base (51).
5. The dynamic testing device according to claim 4, characterized in that: The first leveling member (52) further comprises a base level (522), which is placed on the base (51) and is used to measure the levelness of the base (51).
6. The dynamic testing device according to claim 3, characterized in that: The fixing frame (53) comprises: Two vertical support rods (531) are respectively vertically arranged on two sides of the test mold (1) and connected to the base (51); a transverse support rod (532), which is connected between the two vertical support rods (531) via a second leveling member (533) and is located above the test mold (1); the micrometer (42) is fixed on the transverse support rod (532); A micrometer level (534) is provided on the transverse support rod (532) and is used to measure the horizontality of the transverse support rod (532).
7. The dynamic testing device according to claim 1, characterized in that: The test mold (1) comprises two arc-shaped plates and a circular bottom plate that are interlocked with each other, the two arc-shaped plates are detachably connected and interlocked to form a tubular structure, and the circular bottom plate is detachably connected to the tubular structure to seal the bottom of the tubular structure.
8. The dynamic testing device according to claim 1, characterized in that: The pressure sensor (2) has an accuracy of 0.01 kN and a measuring range of 0-3 kN; the heating element (3) has an accuracy of 0.1°C and a measuring range of 0-150°C.
9. The dynamic testing device according to claim 2, characterized in that: The micrometer (42) has an accuracy of 0.001 mm and a measuring range of 0-10 mm.
10. The dynamic testing device according to claim 2, characterized in that: It also includes a data acquisition system (6) which is connected to the pressure sensor (2) and the micrometer (42) for signal transmission.