A subway lining wall concrete vibrating process optimization method and system
By optimizing the vibration process of concrete for subway lining walls, the vibration response monitoring and data processing module is used to automatically control the vibration equipment, solving the problem of insufficient compaction of thick walls and improving construction quality and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TENGDA CONSTR GROUP CORP
- Filing Date
- 2026-04-10
- Publication Date
- 2026-07-14
Smart Images
Figure CN122386665A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of concrete construction technology in civil engineering, and in particular to an optimized method and system for vibration compaction of concrete for subway lining walls. Background Technology
[0002] The inner lining wall is a key load-bearing and protective component of the main structure of a subway station. The quality of its concrete construction directly determines the structural safety, waterproofing performance, and long-term service life of the subway station. Concrete vibration, as the core process in the construction of the inner lining wall, directly affects the density and uniformity of the concrete and is a key means to eliminate quality defects such as honeycomb, pitting, voids, and looseness.
[0003] Currently, the commonly used vibration methods in the construction of subway lining concrete are mainly divided into two types: attached vibration and immersion vibration. In actual construction, the vibration method and process parameters are often selected based on the experience of the construction personnel. This results in the problem of insufficient compaction of thick walls, leading to poor stability of concrete construction quality. Summary of the Invention
[0005] This invention provides an optimized method and system for the vibration process of concrete lining walls in subways, which solves the problem of insufficient compaction in thick walls and can effectively improve the stability of concrete construction quality.
[0006] According to one aspect of the present invention, a method for optimizing the vibration process of concrete for subway lining walls is provided, which is implemented by a vibration process optimization system for concrete for subway lining walls, the system comprising a vibration response monitoring module, a data processing and control module, and a vibration execution module; the method includes:
[0007] The data processing and control module obtains the wall thickness of the subway lining wall, matches the corresponding vibration mode according to the wall thickness, and generates a control signal corresponding to the vibration mode to control the vibration execution module to start running.
[0008] The vibration response monitoring module collects vibration response parameters during the vibration process and transmits the vibration response parameters to the data processing and control module;
[0009] The data processing and control module determines whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model, and the preset threshold, and controls the vibration execution module to stop running when the concrete density meets the preset standard.
[0010] Optionally, the vibration execution module includes an attached vibrator and an inserted vibrator; the step of matching the vibration mode according to the wall thickness and generating a control signal corresponding to the vibration mode to control the vibration execution module to start operation includes:
[0011] When the wall thickness is less than the first preset thickness threshold, a first control signal is generated to control the vibration execution module to start the attached vibrator;
[0012] When the wall thickness is greater than or equal to the first preset thickness threshold and less than the second preset thickness threshold, a second control signal is generated to control the vibration execution module to start the immersion vibrator.
[0013] When the wall thickness is greater than or equal to the second preset thickness threshold, a third control signal is generated to control the attached vibrator and the inserted vibrator of the vibration execution module to operate synchronously and collaboratively; wherein, the first preset thickness threshold is less than the second preset thickness threshold.
[0014] Optionally, determining whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model, and the preset threshold includes:
[0015] Based on the vibration response parameters, the concrete density state is detected using a preset correlation model.
[0016] When the vibration response parameter is greater than or equal to the preset threshold of the corresponding wall thickness, the concrete density is determined to meet the preset standard.
[0017] When the vibration response parameter is less than the preset threshold corresponding to the wall thickness, an early warning signal is sent and the preset vibration process parameters are adjusted until the concrete density meets the preset standard.
[0018] Optionally, the system further includes a quality verification module, and the method further includes:
[0019] After the concrete has cured to the preset age, the quality verification module tests the density and uniformity of the concrete in the subway lining wall and transmits the test data to the data processing and control module.
[0020] Optionally, the preset threshold is obtained through testing or ultrasonic non-destructive testing. Different wall thicknesses correspond to different preset thresholds, which are pre-stored in the data processing and control module.
[0021] According to another aspect of the present invention, a vibration process optimization system for subway lining concrete is provided, which is used to execute the vibration process optimization method for subway lining concrete according to any embodiment of the present invention. The system includes a vibration response monitoring module, a data processing control module, and a vibration execution module.
[0022] The data processing and control module is used to obtain the wall thickness of the subway lining wall, match the corresponding vibration mode according to the wall thickness, and generate a control signal corresponding to the vibration mode to control the vibration execution module to start running.
[0023] The vibration response monitoring module is used to collect vibration response parameters during the vibration process and transmit the vibration response parameters to the data processing and control module.
[0024] The data processing and control module is also used to determine whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model, and the preset threshold, and to control the vibration execution module to stop running when the concrete density meets the preset standard.
[0025] Optionally, the vibration response monitoring module includes at least 9 sensors, and the vibration response monitoring module is communicatively connected to each sensor. Each sensor is equipped with a magnetic base for detachable fixing to the outside of the steel formwork of the subway inner lining wall.
[0026] The data processing and control module includes a data acquisition card, a controller, and a touch screen; the data acquisition card is communicatively connected to the vibration response monitoring module.
[0027] The vibration execution module includes an attached vibrator, an insertable vibrator, a telescopic frame, a vibration fixing frame, and start / stop control switches for the attached vibrator and the insertable vibrator. The attached vibrator is detachably installed on the vibration fixing frame via a customized base. The vibration fixing frame is detachably connected to the steel formwork of the inner lining wall, and the installation spacing of the attached vibrator can be adjusted. The insertable vibrator is connected to the vibration fixing frame via a telescopic bracket, and the insertion depth of the insertable vibrator can be adjusted. The start / stop control switches for the attached vibrator are electrically connected to the data processing control module and the attached vibrator, respectively. The start / stop control switches for the insertable vibrator are electrically connected to the data processing control module and the insertable vibrator, respectively.
[0028] Optionally, the data processing control module is communicatively connected to the vibration execution module, and the communication method is Bluetooth or WiFi transmission.
[0029] Optionally, the controller is a microcontroller or a PLC controller.
[0030] Optionally, the vibration response monitoring module also includes a built-in sensor embedded in the middle of the concrete pouring layer. The built-in sensor and the sensor deployed on the outside of the steel formwork of the inner lining wall are respectively set in the central area and corner positions of the steel formwork.
[0031] The technical solution provided by this invention obtains the wall thickness of the subway lining wall through a data processing control module, matches the corresponding vibration mode according to the wall thickness, and generates a control signal corresponding to the vibration mode to control the vibration execution module to start running. The vibration response monitoring module collects the vibration response parameters during the vibration process and transmits the vibration response parameters to the data processing control module. The data processing control module determines whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model, and the preset threshold, and controls the vibration execution module to stop running when the concrete density meets the preset standard. The technical solution provided by this invention can achieve matching the optimal vibration mode for different wall thicknesses, especially for the vibration of thick walls, solving the problem of insufficient compaction of thick walls and effectively improving the stability of concrete construction quality.
[0032] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 A flowchart of an optimized vibration process method for concrete lining walls of a subway, provided as an embodiment of the present invention;
[0035] Figure 2 A schematic diagram of a vibration process optimization system for subway lining concrete provided in an embodiment of the present invention;
[0036] Figure 3 A flowchart of another optimized method for vibration compaction process of subway inner lining concrete provided in an embodiment of the present invention;
[0037] Figure 4 A flowchart illustrating another optimized method for vibration compaction of concrete for subway lining walls, provided as an embodiment of the present invention. Detailed Implementation
[0038] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.
[0039] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0040] Figure 1 This is a flowchart illustrating an optimization method for the vibration process of concrete lining walls in subway systems, provided by an embodiment of the present invention. This embodiment is applicable to vibration control of subway lining walls of different thicknesses. The method can be implemented using a vibration process optimization system for subway lining wall concrete. Figure 2 A schematic diagram of a vibration process optimization system for subway lining concrete provided in an embodiment of the present invention is shown below. Figure 2 The system includes a vibration response monitoring module, a data processing and control module, and a vibration execution module. See also... Figure 1 The method includes:
[0041] S110 The data processing and control module obtains the wall thickness of the subway lining wall, matches the corresponding vibration mode according to the wall thickness, and generates a control signal corresponding to the vibration mode to control the vibration execution module to start running.
[0042] Specifically, the data processing and control module can obtain the wall thickness of the subway inner lining wall in two ways. One is to measure the designed thickness parameters of the inner lining wall through a laser rangefinder and automatically transmit them to the data processing and control module. The other is that on-site construction personnel can manually input the designed thickness parameters of the wall through the touch display screen supporting the data processing and control module. In the controller of the data processing and control module, there is a preset固化的“wall thickness - optimal vibration mode” matching rule, which will compare the obtained wall thickness with the preset interval threshold and automatically match the corresponding vibration mode. For example, when the wall thickness ≤ 400mm, a pure attached vibration mode is matched and the inserted vibrator is turned off; when the wall thickness is between 400mm and 600mm, a mode with attached vibration as the main and inserted vibration as the auxiliary is matched; when the wall thickness ≥ 600mm, an attached + inserted synchronous and collaborative vibration mode is matched. After the data processing and control module matches the vibration mode, it will not only generate a simple "on / off" signal, but generate a full-parameter standardized control instruction corresponding to this vibration mode, which mainly includes:
[0043] Equipment start / stop control signal: Clearly define the start / stop status of the corresponding vibration equipment (such as only sending a start signal to the attached vibrator and a stop signal to the inserted vibrator when the wall thickness ≤ 400mm); Process parameter control signal: Match the core parameters such as vibration frequency, insertion depth of the inserted vibrator, vibration position, and vibration duration of the corresponding mode; Threshold call signal: Synchronously match the preset threshold of the vibration response corresponding to this wall thickness to make a pre-configuration for the subsequent closed-loop control to stop the vibration execution module.
[0044] The generated control signal is transmitted wired through a waterproof cable or wirelessly through Bluetooth / WiFi, with an effective transmission distance ≥ 30m, and is stably sent to the vibration execution module. After receiving the control signal from the data processing and control module, the start / stop control switch of the vibration execution module strictly executes standardized operations according to the instructions:
[0045] Precisely control the start / stop and running duration of the corresponding vibration equipment, completely replacing manual start / stop operations; Operate strictly according to the parameters such as frequency, insertion depth, and vibration position set by the instructions to avoid errors in manual hand-held operations; Continuously maintain signal linkage with the data processing and control module during operation, and receive subsequent adjustment and stop instructions in real time, providing an execution basis for the real-time closed-loop control of the entire vibration process.
[0046] It should be noted that the term "固化的" in the original text seems incorrect. I translated it as "preset" according to the context. If there is a more accurate term, it can be adjusted accordingly.This invention uses the thickness of the subway lining wall as the sole core decision-making basis. Through the automated calculation of the data processing control module, it matches the optimal vibration scheme for walls of different thicknesses. Then, through standardized control signals, it drives the vibration equipment to execute precisely, completely eliminating the blindness of manual selection of vibration methods and setting of construction parameters based on experience in traditional construction. It solves the problems of poor vibration adaptability for walls of different thicknesses and insufficient compaction of thick walls from the source.
[0047] S120, the vibration response monitoring module collects vibration response parameters during the vibration process and transmits the vibration response parameters to the data processing and control module.
[0048] The vibration response monitoring module includes at least nine sensors, such as acceleration sensors, amplitude sensors, and frequency sensors. Vibration response parameters are real-time dynamic feedback data of the concrete itself after vibration energy is transferred into the concrete during the compaction process, rather than the preset parameters of the vibration equipment. Vibration response parameters include vibration acceleration, vibration amplitude, and vibration frequency.
[0049] Specifically, the vibration response monitoring module and the vibration execution module start completely synchronously. Simultaneously with the start of vibration, the sensor array begins continuous dynamic acquisition at the millisecond level, tracking the real-time changes in the concrete vibration response throughout the vibration process. After acquiring the vibration response parameters, the vibration response monitoring module first synchronously transmits these parameters to the data acquisition card built into the data processing control module. The data acquisition card performs high-precision conversion from analog to digital signals, and simultaneously performs secondary filtering, noise reduction, and verification. After eliminating invalid data, the clean and valid vibration response data is synchronously transmitted to the controller of the data processing control module, completing the conversion from field signals to data that the controller can process.
[0050] S130 The data processing and control module determines whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model and the preset threshold, and controls the vibration execution module to stop running when the concrete density meets the preset standard.
[0051] The reason for the existence of vibration response parameters is that the set parameters of the vibrator only represent the output capacity of the equipment, not the actual effect of vibration energy being transmitted into the concrete. The vibration response parameters of the concrete itself can directly and truly reflect the compaction process of aggregate disturbance and void filling, and are the only reliable real-time basis for judging the density. The preset correlation model is a model that can reflect the quantitative correspondence between vibration response parameters and concrete density. This model can be pre-built into the controller of the data processing control module. This model is formed through extensive laboratory tests and field vibration test data calibration. It is the core design of the quantitative correlation law of "vibration response parameters-concrete density" specifically for the working conditions of subway inner lining concrete. In the initial stage of vibration, the concrete contains a large number of voids and is in a loose state. The density increases significantly and rapidly with the increase of vibration acceleration and amplitude. As vibration continues, the voids inside the concrete are gradually filled by cement paste, and the rate of increase in density gradually slows down. When the vibration response parameter reaches the threshold, the voids inside the concrete have been basically filled, and the increase in density tends to be saturated. Continuing to vibrate will not increase the density further and may even cause over-vibration defects. The preset threshold is a critical vibration parameter value that is matched with the associated model to determine whether the concrete density meets the standard. This threshold is not a fixed universal value, but is calibrated according to different wall thicknesses, concrete grades, and mix proportions. Thin walls, medium-thick walls, and thick walls correspond to specific thresholds, which are pre-stored in the controller of the data processing control module. This threshold is obtained through testing or ultrasonic non-destructive testing. Different wall thicknesses correspond to different preset thresholds. One vibration response parameter corresponds to the preset threshold for the corresponding wall thickness. For example, vibration acceleration has a preset threshold for vibration acceleration under the wall thickness, and so on. In other words, this threshold can be calibrated through a combination of "preliminary laboratory tests + on-site vibration tests + ultrasonic non-destructive testing," mapping real-time vibration response parameters one-to-one with later measured concrete density data to lock in the critical vibration parameters at density saturation, which is the preset threshold for that working condition. This threshold can be manually adjusted via the touchscreen display of the data processing control module to adapt to special working conditions such as ambient temperature and reinforcement density, balancing standardization and flexibility. The preset standard can be pre-set according to construction needs.
[0052] Specifically, upon initiating vibration, the data processing and control module begins continuous dynamic assessment. Each set of vibration response data acquired and transmitted in milliseconds is simultaneously input into a preset correlation model for real-time calculation, outputting the current concrete density status across the entire wall area and cross-section. During the initial to mid-stages of vibration, if the vibration response parameters do not reach the preset threshold, and the preset correlation model shows the density is still rising, the data processing and control module determines that the concrete density does not meet the preset standard, does not send a stop vibration signal, and continues vibration. If the vibration response parameters are significantly lower than the preset threshold, the data processing and control module simultaneously sends a warning signal, automatically extending the vibration duration or adjusting the vibration frequency and insertion depth to enhance vibration energy. When the real-time acquired vibration response parameters reach and stabilize at the preset threshold, and the preset correlation model determines that the concrete density is approaching saturation, further vibration offers no benefit and carries the risk of over-vibration, the data processing and control module formally determines that the concrete density meets the preset standard. In addition, relying on the distributed sensor array, the data processing and control module not only judges the overall density of the wall, but also makes individual judgments on the local areas corresponding to each sensor point. If the overall density meets the standard but the local area does not, the data processing and control module will accurately locate the under-vibration area and send a local reinforcement vibration prompt to eliminate defects such as local honeycomb and holes, and achieve full-section blind-spot control.
[0053] The technical solution provided by this invention obtains the wall thickness of the subway lining wall through a data processing control module, matches the corresponding vibration mode according to the wall thickness, and generates a control signal corresponding to the vibration mode to control the vibration execution module to start running. The vibration response monitoring module collects the vibration response parameters during the vibration process and transmits the vibration response parameters to the data processing control module. The data processing control module determines whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model, and the preset threshold, and controls the vibration execution module to stop running when the concrete density meets the preset standard. The technical solution provided by this invention can achieve matching the optimal vibration mode for different wall thicknesses, especially for the vibration of thick walls, solving the problem of insufficient compaction of thick walls and effectively improving the stability of concrete construction quality.
[0054] Figure 3 This is a flowchart illustrating another optimized vibration process method for subway lining concrete, provided by an embodiment of the present invention. This embodiment further refines the aforementioned embodiments. See also... Figure 2 Optionally, the vibration execution module includes an attached vibrator and an immersion vibrator; see also Figure 3 S110 includes:
[0055] S210, the data processing and control module obtains the wall thickness of the subway inner lining wall.
[0056] S220. When the wall thickness is less than the first preset thickness threshold, a first control signal is generated to control the vibration execution module to start the attached vibrator.
[0057] The first preset thickness threshold can be preset based on experience. Generally, the first preset thickness threshold is set to 400mm. The first control signal is the signal that controls the vibration execution module to start the attached vibrator.
[0058] Specifically, when the wall thickness is less than 400mm, a first control signal is generated to control the vibration execution module to start the attached vibrator and turn off the immersion vibrator. The attached vibrator operates at a preset frequency of 30-50Hz.
[0059] S230. When the wall thickness is greater than or equal to the first preset thickness threshold and less than the second preset thickness threshold, a second control signal is generated to control the vibration execution module to start the insert vibrator.
[0060] The second preset thickness threshold can be preset based on experience. Generally, the second preset thickness threshold is set to 600 mm. The second control signal is the signal that controls the vibration execution module to start the immersion vibrator.
[0061] Specifically, when the wall thickness is greater than or equal to the first preset thickness threshold and less than the second preset thickness threshold, that is, when the wall thickness is between 400mm and 600mm, a second control signal is generated to control the vibration execution module to start the insert vibrator, with the attached vibrator as an auxiliary, and to perform intermittent vibration at a preset spacing of 300-500mm and an insertion depth of 1 / 2 to 2 / 3 of the wall thickness in areas with dense reinforcement and corners of the formwork.
[0062] S240. When the wall thickness is greater than or equal to the second preset thickness threshold, a third control signal is generated to control the attached vibrator and the inserted vibrator of the vibration execution module to operate synchronously and collaboratively; wherein, the first preset thickness threshold is less than the second preset thickness threshold.
[0063] The third control signal is a signal that controls the synchronous and coordinated operation of the attached vibrator and the inserted vibrator rod of the vibration execution module.
[0064] Specifically, when the wall thickness is ≥600mm, a third control signal is generated to control the attached vibrator and the inserted vibrator of the vibration execution module to operate synchronously and collaboratively. The attached vibrator ensures that the overall vibration energy is evenly distributed, while the inserted vibrator performs vibration operation at an insertion depth of not less than 2 / 3 of the wall thickness and a vibration frequency of 50-80Hz. It systematically inserts into the concrete to increase the energy penetration depth. The two work in sync to ensure the overall density of the wall.
[0065] The technical solution provided by the embodiments of the present invention is to match the optimal vibration method for different wall thicknesses, especially for the vibration of thick walls, which solves the problem of insufficient compaction of thick walls and can effectively improve the stability of concrete construction quality.
[0066] Figure 4 This is a flowchart illustrating another optimized vibration process method for subway lining concrete, provided by an embodiment of the present invention. This embodiment further refines the aforementioned embodiments. See also... Figure 4 Optionally, S130 includes:
[0067] S310. Based on the vibration response parameters, the concrete density is detected using a preset correlation model.
[0068] Specifically, in the initial stage of vibration, the concrete is loose and has many voids, and the vibration wave decays quickly. The collected vibration acceleration and vibration amplitude values are relatively low, corresponding to a low density, which continues to rise rapidly with vibration. In the middle stage of vibration, the voids inside the concrete are gradually filled by cement paste, the aggregate enters a suspended state, the vibration energy transmission efficiency is improved, the vibration acceleration and vibration amplitude rise simultaneously, and the density continues to increase. In the critical period of vibration, the voids inside the concrete are basically filled, and the increase in density tends to saturate. At this time, the vibration response parameters reach a stable peak value, and continuing vibration can no longer increase the density. Instead, it will cause over-vibration defects such as aggregate settling and water segregation.
[0069] S320. Determine whether the vibration response parameter is greater than or equal to the preset threshold; if yes, execute S330; otherwise, execute S340.
[0070] S330, Determine that the concrete density meets the preset standard.
[0071] S340, Send a warning signal and adjust the preset vibration process parameters.
[0072] The preset vibration process parameters include vibration duration, the required frequency of the vibration equipment, and vibration location.
[0073] S350: When the concrete density meets the preset standard, control the vibration execution module to stop running.
[0074] In other embodiments, see also Figure 2 Optionally, the system also includes a quality verification module, and the method further includes:
[0075] After the concrete has cured to the preset age, the quality verification module tests the density and uniformity of the concrete in the subway lining wall and transmits the test data to the data processing and control module.
[0076] Among them, the preset age is the preset curing age of concrete, which is generally 7 days and 28 days.
[0077] Before step S110, there are also system installation and debugging steps, specifically:
[0078] Each sensor of the vibration response monitoring module is installed at a preset monitoring position using a magnetic base, ensuring a tight fit between the sensing unit and the monitored object. The preset monitoring positions can be pre-set according to construction requirements. The attached vibrator and immersion vibrator of the vibration execution module are connected to the steel formwork of the inner lining wall via a vibration fixing frame. The installation spacing of the attached vibrator and the extension range of the immersion vibrator are adjusted to adapt to the thickness of the wall to be constructed. The signal and power lines of each module are connected. After powering on, the monitoring accuracy of the sensors, the stability of data transmission, and the responsiveness of the vibration mode matching function and the start / stop control function of the vibration equipment are tested. After testing, a trial vibration operation is performed, collecting vibration response data and concrete density data during the trial vibration process. The preset vibration response threshold for the corresponding wall thickness is calibrated to ensure the system meets construction requirements.
[0079] In summary, this application has the following significant advantages compared with the prior art:
[0080] (1) Simple structure, strong practicality, and suitable for on-site construction: The system adopts a modular design, each module is detachable and reusable, and is easy to install. It does not require large-scale modification of existing vibrating equipment. It supports dual power supply of mains power and backup battery, is suitable for the complex environment of subway construction site, reduces construction costs, and is easy to promote and apply.
[0081] (2) Realize quantitative and automated control of the vibration process: The vibration response monitoring module collects vibration response parameters in real time, and the data processing control module automatically analyzes and judges them, and sends control signals to control the start and stop of the vibration execution module. This replaces the traditional manual experience control, avoids human operation errors, and effectively eliminates quality defects such as over-vibration and under-vibration while ensuring the density of concrete, thus improving the uniformity of the wall.
[0082] (3) Targeted solution to the problem of vibration of thick walls: Through the collaborative design of the vibration execution module, the collaborative operation mechanism of the attached and inserted vibrators was clarified. With the precise control of the data processing control module, the synchronous linkage of combined vibration of thick walls (≥600mm) was realized, which solved the technical problem of insufficient compaction of the core area of thick walls in the existing technology.
[0083] (4) Wide adaptability and continuous optimization: The data processing and control module can automatically match the optimal vibration mode according to different wall thicknesses (thin wall, medium-thick wall, thick wall). The preset threshold can be calibrated and adjusted. At the same time, through the feedback function of the quality verification module, the preset vibration process parameters can be continuously optimized to adapt to the construction needs of subway inner lining walls under different working conditions, and it has strong universality.
[0084] (5) Economical and efficient, energy saving and consumption reduction: By accurately controlling the vibration time and optimizing the vibration method, unnecessary energy consumption and working hours are reduced while ensuring construction quality, reducing the labor intensity of construction personnel, improving construction efficiency, and reducing the repair cost of concrete quality defects, which has significant economic and social benefits.
[0085] See also Figure 2 This invention provides a vibration process optimization system for subway lining concrete, used to execute the vibration process optimization method for subway lining concrete described in any embodiment of this invention. The system includes a vibration response monitoring module, a data processing control module, and a vibration execution module.
[0086] The data processing and control module is used to obtain the wall thickness of the subway lining wall, match the corresponding vibration mode according to the wall thickness, and generate a control signal corresponding to the vibration mode to control the vibration execution module to start running.
[0087] The vibration response monitoring module is used to collect vibration response parameters during the vibration process and transmit the vibration response parameters to the data processing and control module.
[0088] The data processing and control module is also used to determine whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model, and the preset threshold, and to control the vibration execution module to stop running when the concrete density meets the preset standard.
[0089] See also Figure 2Optionally, the vibration response monitoring module includes at least nine sensors, which are communicatively connected to each sensor. Each sensor is equipped with a magnetic base for detachable fixing to the outside of the steel formwork of the subway lining wall. The data processing and control module includes a data acquisition card, a controller, and a touch screen. The data acquisition card is communicatively connected to the vibration response monitoring module. The vibration execution module includes an attached vibrator, an insert vibrator rod, a telescopic frame, a vibration fixing frame, and start / stop control switches for the attached vibrator and the insert vibrator rod. The attached vibrator is detachably installed on the vibration fixing frame via a customized base. The vibration fixing frame is detachably connected to the steel formwork of the lining wall, and the installation spacing of the attached vibrator can be adjusted. The insert vibrator rod is connected to the vibration fixing frame via a telescopic bracket, and the insertion depth of the insert vibrator rod can be adjusted. The start / stop control switches for the attached vibrator and the inserted vibrator are electrically connected to the data processing and control module and the attached vibrator, respectively.
[0090] Optionally, the data processing control module and the vibration execution module are connected in communication, and the communication method is Bluetooth or WiFi transmission.
[0091] Optionally, the controller can be a microcontroller or a PLC controller.
[0092] Optionally, the vibration response monitoring module also includes a built-in sensor embedded in the middle of the concrete pouring layer. The built-in sensor and the sensor deployed on the outside of the steel formwork of the inner lining wall are respectively set in the central area and corner positions of the steel formwork.
[0093] The vibration process optimization system for subway lining concrete provided in this embodiment of the invention can execute the vibration process optimization method for subway lining concrete provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method, which will not be elaborated here.
[0094] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.
[0095] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.
Claims
1. An optimized method for vibration compaction of concrete for subway lining walls, characterized in that, The method is achieved by an optimized vibration process system for subway lining concrete, the system comprising a vibration response monitoring module, a data processing and control module, and a vibration execution module; the method includes: The data processing and control module obtains the wall thickness of the subway lining wall, matches the corresponding vibration mode according to the wall thickness, and generates a control signal corresponding to the vibration mode to control the vibration execution module to start running. The vibration response monitoring module collects vibration response parameters during the vibration process and transmits the vibration response parameters to the data processing and control module; The data processing and control module determines whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model, and the preset threshold, and controls the vibration execution module to stop running when the concrete density meets the preset standard.
2. The method according to claim 1, characterized in that, The vibration execution module includes an attached vibrator and an inserted vibrator rod; the step of matching the vibration mode according to the wall thickness and generating a control signal corresponding to the vibration mode to control the start-up of the vibration execution module includes: When the wall thickness is less than the first preset thickness threshold, a first control signal is generated to control the vibration execution module to start the attached vibrator; When the wall thickness is greater than or equal to the first preset thickness threshold and less than the second preset thickness threshold, a second control signal is generated to control the vibration execution module to start the immersion vibrator. When the wall thickness is greater than or equal to the second preset thickness threshold, a third control signal is generated to control the attached vibrator and the inserted vibrator of the vibration execution module to operate synchronously and collaboratively; wherein, the first preset thickness threshold is less than the second preset thickness threshold.
3. The method according to claim 1, characterized in that, Determining whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model, and the preset threshold includes: Based on the vibration response parameters, the concrete density state is detected using a preset correlation model. When the vibration response parameter is greater than or equal to the preset threshold of the corresponding wall thickness, the concrete density is determined to meet the preset standard. When the vibration response parameter is less than the preset threshold corresponding to the wall thickness, an early warning signal is sent and the preset vibration process parameters are adjusted until the concrete density meets the preset standard.
4. The method according to claim 1, characterized in that, The system further includes a quality verification module, and the method further includes: After the concrete has cured to the preset age, the quality verification module tests the density and uniformity of the concrete in the subway lining wall and transmits the test data to the data processing and control module.
5. The method according to claim 1, characterized in that, The preset threshold is obtained through testing or ultrasonic non-destructive testing. Different wall thicknesses correspond to different preset thresholds, which are pre-stored in the data processing and control module.
6. An optimized vibration process system for subway lining concrete, characterized in that, A method for optimizing the vibration process of concrete for subway inner lining walls according to any one of claims 1-5, the system comprising a vibration response monitoring module, a data processing and control module, and a vibration execution module; The data processing and control module is used to obtain the wall thickness of the subway lining wall, match the corresponding vibration mode according to the wall thickness, and generate a control signal corresponding to the vibration mode to control the vibration execution module to start running. The vibration response monitoring module is used to collect vibration response parameters during the vibration process and transmit the vibration response parameters to the data processing and control module. The data processing and control module is also used to determine whether the concrete density meets the preset standard based on the vibration response parameters, the preset correlation model, and the preset threshold, and to control the vibration execution module to stop running when the concrete density meets the preset standard.
7. The system according to claim 6, characterized in that, The vibration response monitoring module includes at least 9 sensors. The vibration response monitoring module is communicatively connected to each sensor. Each sensor is equipped with a magnetic base for detachable fixing to the outside of the steel formwork of the subway inner lining wall. The data processing and control module includes a data acquisition card, a controller, and a touch screen; the data acquisition card is communicatively connected to the vibration response monitoring module. The vibration execution module includes an attached vibrator, an insertable vibrator, a telescopic frame, a vibration fixing frame, and start / stop control switches for the attached vibrator and the insertable vibrator. The attached vibrator is detachably installed on the vibration fixing frame via a customized base. The vibration fixing frame is detachably connected to the steel formwork of the inner lining wall, and the installation spacing of the attached vibrator can be adjusted. The insertable vibrator is connected to the vibration fixing frame via a telescopic bracket, and the insertion depth of the insertable vibrator can be adjusted. The start / stop control switches for the attached vibrator are electrically connected to the data processing control module and the attached vibrator, respectively. The start / stop control switches for the insertable vibrator are electrically connected to the data processing control module and the insertable vibrator, respectively.
8. The system according to claim 7, characterized in that, The data processing control module is communicatively connected to the vibration execution module, and the communication method is Bluetooth or WiFi transmission.
9. The system according to claim 7, characterized in that, The controller is a microcontroller or a PLC controller.
10. The system according to claim 7, characterized in that, The vibration response monitoring module also includes a built-in sensor embedded in the middle of the concrete pouring layer. The built-in sensor and the sensor deployed on the outside of the steel formwork of the inner lining wall are respectively set in the central area and corner positions of the steel formwork.