A bridge spraying maintenance system and a control method thereof

Abstract

The present application relates to the technical field of bridge maintenance, and more particularly to a road and bridge spraying maintenance system and a control method thereof, comprising a water supply execution module, a regional spraying module, an intelligent control module, a remote response module, a dynamic adaptation module, a parameter setting module and a regional adaptation module. The water supply execution module provides a pressure water source through an integrated water tank and a booster pump, and a water supply main pipe is arranged along the inner side of a bridge rail. The regional spraying module is provided with spraying assemblies and adjustable nozzles in the inner cavities of box chambers. The intelligent control module dynamically adjusts spraying parameters and branch opening and closing. The dynamic adaptation module realizes synchronization of pipeline and hanging basket displacement through quick dismounting joints and main pipe extension sections. The parameter setting module switches spraying modes according to the age of concrete and surface temperature. The regional adaptation module controls pipeline separation and jointing and nozzle angle correction. The present application solves the problems of insufficient corner coverage and poor timeliness, and improves maintenance uniformity and structural durability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge maintenance, in particular to a road and bridge spraying maintenance system and a control method thereof. BACKGROUND

[0002] With the continuous development of highway construction in China, as an important structure form in modern bridge engineering, the segment maintenance of continuous rigid frame bridge plays a decisive role in ensuring the quality, safe operation and service life of the bridge. Segment maintenance is a key link to ensure the safety and durability of the bridge structure. The traditional rigid frame segment construction maintenance has low intelligence, and even manual watering maintenance is adopted. The corner area is not maintained in place, the maintenance effect is poor, and special personnel are needed for on-site maintenance. Limited by the maintenance consciousness of the maintenance personnel, watering at night may not be timely, affecting the quality of the concrete.

[0003] Chinese Patent Publication No. CN111676829A discloses a spraying maintenance system and method for a cast-in-place box girder of an elevated bridge. The system comprises: a plurality of fixing frames arranged on the side of the box girder formwork; a water supply pipeline laid on the fixing frames; a plurality of first spray heads installed on the water supply pipeline; a water collecting tank arranged close to the cast-in-place box girder and containing water; a booster pump in communication with the water collecting tank, the booster pump being in communication with the water supply pipeline through a water delivery pipe, the water in the water collecting tank being pumped into the water supply pipeline by the booster pump, and the water in the water supply pipeline being sprayed from the water outlets of the first spray heads towards the top surface of the cast-in-place box girder to achieve spraying maintenance of the cast-in-place box girder. It can be seen that the spraying maintenance system and method for the cast-in-place box girder of the elevated bridge have the following problems: high risk of high-altitude work, insufficient coverage of spraying corners, and poor timeliness. SUMMARY

[0004] Therefore, the present application provides a road and bridge spraying maintenance system to overcome the problems of high risk of high-altitude work, insufficient coverage of corners and poor timeliness in traditional maintenance in the prior art, and to improve the uniformity of maintenance and the durability of the structure.

[0005] To achieve the above-mentioned purpose, in one aspect, the present application provides a road and bridge spraying maintenance system, comprising:

[0006] A water supply execution module comprising an integrated water tank arranged at a predetermined position of the bridge body structure, a booster pump in fluid connection with the integrated water tank, and a water supply main pipe arranged along the extension direction of the bridge body structure;

[0007] A regional spraying module comprising a plurality of sub-area control branches in communication with the water supply main pipe, each branch corresponding to a box girder top surface maintenance area, a flange plate maintenance area and a box chamber inner cavity maintenance area, wherein the top surface maintenance area and the box chamber inner cavity maintenance area branch are provided with a multi-directional spraying assembly; the flange plate maintenance area branch is provided with a wide-angle rotary spraying assembly and is connected through a flexible delivery pipeline;

[0008] An intelligent control module is connected with the booster pump and the monitoring sensor signal of each sub-control branch, respectively;

[0009] A remote response module is connected with the intelligent control module through a wireless communication protocol, used to receive remote instructions and forward them to the intelligent control module;

[0010] A dynamic adaptation module includes a spraying assembly mounting rack fixed on the cantilever casting construction equipment, and a pipeline connection assembly arranged at the joint of the water supply main pipe and the sub-control branch, used to realize the pipeline separation type dynamic docking;

[0011] A parameter setting module is connected with the intelligent control module and the regional spraying module, used to set the spraying time, water pressure parameters and regional start-stop sequence according to the characteristics of the concrete curing stage;

[0012] A regional adaptation module is connected with the dynamic adaptation module and the regional spraying module, used to synchronously adjust the spatial positioning of the spraying assembly according to the displacement state of the cantilever casting construction equipment, and control the pipeline connection assembly to perform the jointing or separating action.

[0013] As the preferred technical solution of the bridge and road spraying curing system, in the regional spraying module:

[0014] The box girder top surface curing area branch includes a rigid pipeline arranged along the longitudinal direction of the main girder of the hanging basket, and multiple double-spraying head structures are arranged at intervals in the rigid pipeline;

[0015] The branch of the box chamber inner cavity curing area includes a transverse pipeline array arranged along the inner transverse beam of the hanging basket, and the transverse pipeline array is provided with an angle-adjustable double-spraying head structure;

[0016] The flange plate curing area branch includes a fan-shaped spraying head connected through a flexible pipeline, and the fan-shaped spraying head is installed on the bottom longitudinal beam of the hanging basket and has a rotating structure;

[0017] The joint of each branch and the water supply main pipe is communicated through a tee joint.

[0018] As the preferred technical solution of the bridge and road spraying curing system, in the water supply execution module:

[0019] The integrated water tank is a steel plate welded structure, and is fixedly arranged at the center position of the top surface of the bridge zero block;

[0020] The water inlet of the booster pump is communicated with the water outlet of the integrated water tank, and the water outlet of the booster pump is connected with the water supply main pipe;

[0021] The water supply main pipe is arranged along the inside of the bridge parapet, and the pipe material is a polyethylene cold water pipe;

[0022] The flow monitor is arranged at the junction of each sub-control branch of the water supply main pipe.

[0023] The power input end of the booster pump is electrically connected with the intelligent control module.

[0024] As the preferred technical solution of the bridge spraying maintenance system, the intelligent control module determines whether to adjust the spraying parameters according to the flow monitoring data, comprising:

[0025] If the flow monitoring data is within the preset flow threshold range, the intelligent control module determines to maintain the current spraying parameters;

[0026] If the flow monitoring data is beyond the preset flow threshold range, the intelligent control module determines that the spraying parameters need to be adjusted, and the output power of the booster pump is reduced.

[0027] The flow monitoring data is obtained in real time through the flow monitor at the junction of each sub-control branch.

[0028] As the preferred technical solution of the bridge spraying maintenance system, the intelligent control module determines the power adjustment amount of the booster pump according to the flow monitoring data and the current water pressure parameter.

[0029] The intelligent control module determines the on-off state adjustment of a specific branch according to the flow monitoring data and the branch identification.

[0030] As the preferred technical solution of the bridge spraying maintenance system, in the dynamic adaptation module:

[0031] The spraying assembly mounting frame is connected with the main beam, bottom longitudinal beam and inner cross beam of the hanging basket through the steel wire fixing piece;

[0032] The pipeline connection assembly comprises a quick disassembly joint and a main pipe extension section;

[0033] The quick disassembly joint is arranged at the junction of the water supply main pipe and the sub-control branch.

[0034] The main pipe extension section is connected with the end of the water supply main pipe before the displacement of the hanging basket.

[0035] As the preferred technical solution of the bridge spraying maintenance system, the parameter setting module determines the spraying mode according to the concrete state characteristics and environmental characteristics.

[0036] If the concrete state characteristics meet the preset intensive maintenance condition, the spraying mode is a high-intensity spraying mode.

[0037] If the concrete state characteristics do not meet the preset intensive maintenance condition, the spraying mode is a reference spraying mode.

[0038] The preset strengthening maintenance condition is that the concrete age is less than a preset age threshold or the concrete surface temperature is greater than a preset temperature threshold.

[0039] As the preferred technical solution of the bridge spraying maintenance system, the regional adaptation module comprises:

[0040] The displacement state comprises a hanging basket forward movement state and a hanging basket in-place state.

[0041] In the hanging basket forward movement state, the control pipeline connection component performs a separation action to disconnect the sub-control branch from the water supply main pipe.

[0042] In the hanging basket in-place state, the control pipeline connection component performs a connection action to connect the main pipe extension section with the next section water supply main pipe.

[0043] The spatial positioning adjustment comprises correcting the spraying direction of the double-spraying head structure through an angle adjustment mechanism.

[0044] In another aspect, the present application also provides a control method of the bridge spraying maintenance system, comprising:

[0045] Step S1, collecting and acquiring the flow monitoring data of each sub-control branch, and continuously acquiring the displacement state signal of the cantilever casting construction equipment;

[0046] Step S2, determining the spraying control parameters according to the flow monitoring data combined with the concrete maintenance stage characteristics, and determining the pipeline connection action instruction according to the displacement state signal;

[0047] Step S3, controlling the spraying assembly of the regional spraying module to perform sub-regional spraying action according to the spraying control parameters;

[0048] Step S4, controlling the dynamic adaptation module to perform pipeline separation or connection operation according to the pipeline connection action instruction;

[0049] Step S5, determining the parameter adjustment instruction according to the flow monitoring data in the spraying process, and adjusting the output power of the booster pump and the opening and closing state of the sub-branch according to the parameter adjustment instruction.

[0050] Compared with the prior art, the beneficial effects of the present application are that the water supply execution module relies on the high water tank and the pressure stable design of the booster system, combined with the physical protection mechanism of the pipe inside the guardrail, not only guarantees the continuous and reliable water supply, but also significantly reduces the probability of pipe damage, laying a foundation for long-term stable operation of the system. The innovation of the regional spraying module lies in its three-dimensional space adaptation capability: the linear coverage network formed by the top surface area longitudinal rigid pipe completely eliminates the maintenance blind area in the middle of the roof, the multi-angle adjustable nozzle in the inner tank area breaks through the maintenance barrier of closed space, the combination of the flange plate rotating nozzle and the flexible pipe solves the coverage problem of the cantilever structure bottom side, and the flow channel optimization design of the tee joint further ensures the dynamic balance of the water pressure of each branch, so that the concrete surface is evenly wetted and maintained.

[0051] Especially, the intelligent control module builds a double protection mechanism of fault early warning and dynamic regulation. The threshold judgment based on the flow fluctuation model can quickly identify pipe blockage or leakage, the coupling adjustment of power and water pressure parameters realizes precise energy distribution under abnormal working conditions, and the branch priority strategy responds according to the importance of the structure, which ensures the flexible operation of the maintenance system. The dynamic adaptation module absorbs the construction vibration energy through elastic fixing parts, the millisecond quick connector eliminates the risk of pipeline winding when the hanging basket moves, and the modular extension segment design realizes seamless cooperation between the pipeline system and the construction progress, so that the spraying assembly always maintains high positioning accuracy.

[0052] Especially, the advancement of the parameter setting module is reflected in the deep response to the properties of concrete materials. By tracking the active period of cement hydration reaction, the spraying is automatically intensified during the strength jump period to inhibit early plastic cracks; combined with the identification of the critical state of water evaporation, the moisture frequency is dynamically increased in high temperature environment to block the development of dry shrinkage cracks. The regional adaptation module relies on accurate perception of hydraulic state to synchronize the pipeline connection with the displacement rhythm of the hanging basket, and the real-time correction technology of laser positioning further compensates for the spraying deviation caused by construction deformation, ensuring the coverage integrity of complex curved surface areas.

[0053] Especially, the subarea spraying assembly is deeply compatible with the bridge form to break through the maintenance bottleneck of special-shaped structures, multi-source data fusion builds a digital mirror of the maintenance state, and the dynamic optimal strategy is generated by the dual drive of material properties and construction process. The coupling of mechanical and control systems realizes spatial accurate positioning. It promotes the maintenance mode from passive remedy to active protection, and the resource consumption jumps to fine control. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 The figure is a structural schematic diagram of the bridge spraying maintenance system of the embodiment of the present application;

[0055] Figure 2 The figure is a side view schematic diagram of the pipeline arrangement of the embodiment of the present application;

[0056] Figure 3A pipeline arrangement plan view of an embodiment of the present application;

[0057] Figure 4 A flow chart of a control method of a bridge and road spraying maintenance system of an embodiment of the present application. DETAILED DESCRIPTION

[0058] In order to make the objects and advantages of the present application clearer, the present application will be further described in conjunction with embodiments. It should be understood that the specific embodiments described herein merely serve to explain the present application and should not be used to limit the present application.

[0059] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that the embodiments are merely used to explain the technical principles of the present application and are not used to limit the protection scope of the present application.

[0060] It should be noted that, in the description of the present application, the terms of "upper", "lower", "left", "right", "inner", "outer" and the like indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description and does not indicate or imply that the device or element 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.

[0061] In addition, it should also be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the terms of "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] Please refer to Figure 1 As shown in the figure, it is a structural schematic diagram of a bridge and road spraying maintenance system of an embodiment of the present application; the present application provides a bridge and road spraying maintenance system, which comprises:

[0063] The water supply execution module comprises an integrated water tank arranged at a predetermined position of the bridge body structure, a booster pump in fluid connection with the integrated water tank, and a water supply main pipe arranged along the extension direction of the bridge body;

[0064] The regional spraying module comprises a plurality of sub-area control branches in communication with the water supply main pipe, each branch corresponding to a box girder top surface maintenance area, a flange plate maintenance area and a box chamber inner cavity maintenance area, wherein the top surface maintenance area and the box chamber inner cavity maintenance area branch are provided with a multi-directional spraying assembly; the flange plate maintenance area branch is provided with a wide-angle rotary spraying assembly and connected through a flexible conveying pipe;

[0065] The intelligent control module is connected with the booster pump and the monitoring sensor signal of each sub-area control branch respectively;

[0066] The remote response module is connected with the intelligent control module through a wireless communication protocol, and is used to receive a remote instruction and forward the remote instruction to the intelligent control module.

[0067] The dynamic adaptation module comprises a spraying assembly mounting frame fixed on the cantilever casting construction equipment, and a pipeline connection assembly arranged at a joint of the water supply main pipe and the sub-area control branch, and is used to realize pipeline separation type dynamic connection.

[0068] The parameter setting module is connected with the intelligent control module and the area spraying module respectively, and is used to set a spraying time length, a water pressure parameter and an area start-stop sequence according to a concrete curing stage feature.

[0069] The area adaptation module is connected with the dynamic adaptation module and the area spraying module, and is used to synchronously adjust a spatial positioning of the spraying assembly according to a displacement state of the cantilever casting construction equipment, and control the pipeline connection assembly to perform a jointing or separating action.

[0070] The cantilever casting construction equipment refers to a hanging basket system for cantilever casting of a bridge, and comprises load-bearing structures such as a main beam, a bottom longitudinal beam and an inner cross beam. The hanging basket is a mobile support platform for cantilever casting, and bears a formwork and a concrete load.

[0071] In implementation, specific implementation forms of the water supply execution module and the area spraying module are not limited. The water supply execution module can complete the functions of taking water from a water source and pressurized delivery to a water supply network. The area spraying module can realize differential curing coverage of a top surface of a box girder, a flange plate and an inner cavity of a box chamber. The specific structures of the intelligent control module, the parameter setting module and the area adaptation module are not limited. The intelligent control module, the parameter setting module and the area adaptation module can be composed of logic components, and the logic components include a field programmable processor, a computer and a microprocessor in the computer.

[0072] The water supply execution module relies on pressure stabilization design of the high-level water tank and the booster system, and combines with a physical protection mechanism of the in-rail piping, so as to not only guarantee continuous and reliable water supply, but also significantly reduce the pipeline damage probability, and lay a foundation for long-term stable operation of the system. The area spraying module is innovative in three-dimensional space adaptation capability. A linear coverage network formed by the top surface area longitudinal rigid pipeline completely eliminates a curing blind area in the middle of the top plate. The multi-angle adjustable nozzle in the inner box area breaks through the curing barrier of a closed space. The combination of the flange plate rotary nozzle and the flexible pipeline solves the coverage problem of the overhanging structure bottom side. The flow channel optimization design of the three-way joint further ensures dynamic balance of water pressure of each branch, so that the concrete surface obtains uniform wet curing.

[0073] Please refer to Figures 2-3 as shown, Figure 2Figure 2 is a schematic diagram of a side view of a pipeline arrangement according to an embodiment of the present application; Figure 3 Figure 3 is a schematic diagram of a plan view of a pipeline arrangement according to an embodiment of the present application; the region spray module is in:

[0074] The branch of the top surface maintenance area of the box girder comprises a rigid pipeline arranged along the main girder of the hanging basket, and a plurality of double nozzle structures are arranged at intervals in the rigid pipeline;

[0075] The branch of the inner chamber maintenance area comprises a transverse pipeline array arranged along the inner transverse beam of the hanging basket, and the transverse pipeline array is provided with an angle-adjustable double nozzle structure;

[0076] The branch of the flange plate maintenance area comprises a fan-shaped nozzle connected by a flexible pipeline, and the fan-shaped nozzle is installed on the bottom longitudinal beam of the hanging basket and has a rotating structure;

[0077] The junction of each branch and the water supply main pipe is communicated through a tee joint.

[0078] In the implementation, the branch of the top surface maintenance area is arranged with a rigid pipeline along the main girder of the hanging basket, and a double nozzle structure with equal intervals is used. The nozzle spacing is determined based on the concrete surface humidity uniformity test: the test beam section is divided into grid areas, the humidity distribution differences of each grid under different spacing schemes are compared, and the scheme with the smallest humidity difference is selected as the standard configuration. The double nozzle adopts a fixed angle cross-jet design to form a water curtain covering the full width of the top plate. The purpose of the setting is to solve the problem of insufficient water coverage in the middle of the top plate in traditional maintenance, and the principle is to realize maintenance without dead angle through longitudinal linear distribution, which ensures uniform hardening of the top plate concrete and avoids dry shrinkage cracks. The pipeline is connected with the main girder of the hanging basket through mechanical fasteners to ensure the stability of the position under construction vibration.

[0079] The inner box maintenance area is arranged with a transverse pipeline array on the inner transverse beam of the hanging basket, and is provided with an angle-adjustable double nozzle structure. The nozzle adjustment range is determined through a box chamber scale model test: the water mist diffusion range under different angles is tested in the simulated cavity, and the best angle interval that can cover the top plate and the inside of the web is selected. In the implementation, the nozzle angle is locked by a manual knob to adapt to the complex spatial form of the box chamber. The purpose of the setting is to overcome the defect of poor accessibility of artificial maintenance in enclosed space, and the principle is to realize multi-directional accurate spraying by using adjustable nozzles, which ensures that the maintenance quality of the inner surface of the box chamber meets the durability requirements.

[0080] The flange plate area is connected with the fan-shaped nozzle through a flexible pipeline, and the nozzle bottom is integrated with a rotating driving structure. The rotating angle is selected based on wind tunnel simulation test: the water mist coverage effect of the nozzle in static and rotating state is tested under different wind speed environment, and it is confirmed that periodic rotation can significantly improve the coverage rate of the bottom side of the flange plate. The setting purpose is to solve the industry problem of insufficient maintenance of the bottom surface of the cantilever structure, and its principle is to combine the flexible pipeline to adapt to the deformation of the hanging basket, and cooperate with the rotating spray to cover the curved surface structure, which can eliminate the maintenance blind area of the flange plate edge. The nozzle is fixed to the hanging basket bottom longitudinal beam through a quick-release clamp, which is convenient for maintenance and replacement.

[0081] The branch pipe and the water supply main pipe joint adopts a three-way joint with a built-in flow guide structure. The flow guide design is optimized through fluid dynamics simulation: the pressure loss characteristics of different internal structures are compared, and the scheme with smooth water flow transition is selected. The setting purpose is to maintain the water pressure balance of each branch, and the principle is to reduce the disturbance of water distribution by optimizing the flow channel, and the effect is to ensure the stability of the coordinated operation of the partitioned spraying system.

[0082] Firstly, the concrete surface humidity uniformity test under standard curing conditions is used to select the nozzle spacing by taking the minimum surface humidity difference as the criterion; secondly, the spatial coverage test is carried out on the reduced scale box model, and the nozzle angle is gradually adjusted until the water mist uncovered area is eliminated; then the rotating angle is gradually increased in the wind tunnel environment to ensure that the water mist can still fully adhere under strong wind conditions; finally, CFD calculation is used to compare multiple flow guide configurations, and the optimal scheme with the most gentle pressure transition is selected.

[0083] Specifically, in the water supply execution module:

[0084] The integrated water tank is a steel plate welded structure, which is fixedly arranged at the center position of the top surface of the bridge zero block;

[0085] The water inlet of the booster pump is in communication with the water outlet of the integrated water tank, and the water outlet of the booster pump is connected with the water supply main pipe;

[0086] The water supply main pipe is arranged along the inner side of the bridge guardrail, and the pipe material is polyethylene cold water pipe;

[0087] The water supply main pipe is provided with a flow monitor at the branch pipe joint;

[0088] The power input end of the booster pump is electrically connected with the intelligent control module.

[0089] In implementation, the integrated water tank is formed by welding steel plates and is fixedly arranged at the center of the top surface of the bridge zero block. The volume of the water tank is determined according to the maximum segment maintenance requirement, and the center positioning is based on the principle of counterweight balance: the anchoring characteristics of the zero block are used to offset the unbalanced moment in the cantilever construction. The setting purpose is to store maintenance water in a concentrated manner to avoid frequent water replenishment interference with the construction; the principle is to form a natural pressure difference auxiliary booster system through the high-level water tank; and the effect is to ensure continuous and stable water supply and reduce the risk of high-altitude water transportation operation. The volume is calibrated through a typical segment water consumption test, and the maximum value is taken with a safety margin.

[0090] The water inlet of the booster pump is sealingly connected with the water outlet of the water tank, and the water outlet is connected with the water supply main pipe. The pump body is selected according to the resistance characteristics of the pipeline system, and a damping structure is arranged at the connection. The setting purpose is to establish a constant pressure water source, the principle is to maintain stable water pressure through mechanical sealing design, and the effect is to eliminate uneven spraying caused by pressure fluctuation. The threshold of lift is determined by hydraulic model calculation, considering the along-path resistance and safety factor.

[0091] The water supply main pipe is made of polyethylene pipe material and is laid along the inside of the embedded steel of the bridge guardrail. The pipe material is selected according to the pressure bearing requirement, and the laying path is avoided to pass through the construction passage. The setting purpose is to prevent external damage, the principle is to use the steel structure to form physical protection, and the effect is to ensure long-term reliable operation of the pipeline. The wall thickness is selected by referring to the pressure pipe grade test to meet the safety redundancy of blasting strength.

[0092] The flow monitor is arranged downstream of the branch joint and uses turbine sensing technology to monitor real-time flow. The data signal is transmitted to the intelligent control module. The setting purpose is to identify abnormal working conditions of the branch, the principle is to locate faults through flow mutation characteristics, and the effect is to realize accurate operation and maintenance response. The flow threshold is determined based on statistical analysis of normal working condition data, and the mean floating range is used as the reference.

[0093] The power supply of the booster pump is connected to the intelligent control module through a protection circuit, and the cable is laid by using a protective bridge. The setting purpose is to ensure electrical safety, the principle is that the hierarchical protection mechanism responds to current abnormalities, and the effect is to prevent equipment damage and prolong the service life. The overload threshold is set according to the motor characteristic curve, and is related to the rated working condition parameters.

[0094] Specifically, the intelligent control module determines whether to adjust the spraying parameters according to the flow monitoring data, including:

[0095] If the flow monitoring data is within a preset flow threshold range, the intelligent control module determines to maintain the current spraying parameters;

[0096] If the flow monitoring data exceeds the preset flow threshold range, the intelligent control module determines that the spraying parameters need to be adjusted, and reduces the output power of the booster pump;

[0097] The flow monitoring data is acquired in real time by a flow monitor of each partition control branch joint.

[0098] Specifically, the intelligent control module determines a power adjustment amount of the booster pump according to the flow monitoring data in combination with a current water pressure parameter.

[0099] The intelligent control module determines an on-off state adjustment of a specific branch according to the flow monitoring data in combination with a partition branch identifier.

[0100] In implementation, the boundary is determined by using a mathematical statistics method through long-term monitoring of flow fluctuation rules under normal working conditions. For example, flow values are recorded in continuous multiple standard spraying operations, after extreme deviation data is removed, a certain proportion of the mean value of the remaining data is taken as a threshold range, if the data is within the threshold, the current parameters are maintained, if it is beyond, the power of the booster pump is reduced. The purpose of the setting is to respond to pipeline abnormalities in a timely manner, and the principle is that flow mutation reflects blockage / leakage failure; on the effect, it prevents system overload operation.

[0101] When the flow is abnormal, the power adjustment amount is calculated in combination with the real-time water pressure parameter, the correlation model of water pressure-flow-power is established, and the coefficient is calibrated through fault simulation test. According to historical data, the corresponding relationship between flow attenuation rate and power under different water pressures is determined, and is fitted into an adjustment amount calculation formula. When the water pressure is too high, the power is reduced slightly to maintain water supply; when the water pressure is too low, the power is greatly reduced and the secondary branch is closed. The purpose of the setting is to optimize resource allocation under fault conditions, and the principle is to dynamically match the supply capacity and demand of the system; on the effect, the continuity of key area maintenance is maintained.

[0102] According to the flow data and the branch identifier, the control is executed, the importance of the branch is determined through the concrete curing effect comparison test, in the embodiment, different branches are closed in the test bridge section, the concrete strength development curve of the corresponding area is detected, and the area with a strength drop exceeding a critical value is listed as a high priority. When the key branch is abnormal, only the power is reduced without being closed; when the secondary branch is abnormal, it is closed and the adjacent area compensation is improved. The purpose of the setting is to minimize the impact of failure, and the principle is a differentiated protection strategy; on the effect, the maintenance quality of the core area of the structure is ensured.

[0103] In the present application, the intelligent control module establishes a dual protection mechanism of fault early warning and dynamic control. The threshold determination based on the flow fluctuation model can quickly identify pipeline blockage or leakage, the coupling adjustment of power and water pressure parameters realizes accurate energy distribution under abnormal working conditions, and the branch priority strategy responds according to the importance of the structure, the three cooperate to ensure the resilient operation of the maintenance system. The dynamic adaptation module absorbs the construction vibration energy through the elastic fixing piece, the millisecond level quick connector eliminates the risk of pipeline winding when the hanging basket moves, and the modular extension segment design realizes seamless cooperation of the pipeline system and the construction progress, so that the spraying assembly always maintains high positioning accuracy.

[0104] Specifically, the dynamic adaptation module comprises:

[0105] The spraying assembly mounting frame is connected with the hanging basket main beam, bottom longitudinal beam and inner transverse beam through steel wire fixing members;

[0106] The pipeline connection assembly comprises a quick dismounting joint and a main pipe extension section;

[0107] The quick dismounting joint is arranged at the joint of the water supply main pipe and the sub-control branch;

[0108] The main pipe extension section is connected with the end of the water supply main pipe before displacement of the hanging basket.

[0109] Specifically, the parameter setting module determines the spraying mode according to the concrete state characteristics and environmental characteristics;

[0110] If the concrete state characteristics meet the preset intensified maintenance condition, the spraying mode is a high-intensity spraying mode;

[0111] If the concrete state characteristics do not meet the preset intensified maintenance condition, the spraying mode is a reference spraying mode;

[0112] The preset intensified maintenance condition is that the concrete age is less than a preset age threshold value or the concrete surface temperature is greater than a preset temperature threshold value.

[0113] In implementation, the preset age threshold value is determined, the early strength development law of test blocks of different ages is tested in a standard maintenance environment through a concrete anti-cracking performance comparison test, and a critical time point at which the strength growth changes from rapid to gentle is selected as a threshold reference. When the age is less than the critical value, it is determined that the hydration reaction is active, and the high-intensity spraying mode needs to be started.

[0114] The preset temperature threshold value is determined, the surface humidity decay trend under different temperature conditions is observed in a simulated environment cabin based on a concrete moisture evaporation characteristic test, and a starting temperature point at which humidity accelerates to decline is selected as a threshold. When the surface temperature exceeds the critical point, it is determined that the evaporation risk significantly increases, and the high-intensity mode needs to be switched.

[0115] The purpose of the setting is to accurately match the concrete material characteristics, and the principle is to grasp the key window period of early strength formation and high-temperature water loss; the effect is to prevent plastic shrinkage cracks and ensure strength development.

[0116] The high-intensity spraying mode is to shorten the spraying interval period, prolong the single spraying duration, and moderately increase the end water pressure strength. The implementation is based on a concrete temperature and humidity coupling test: sensors are embedded in the test block to calibrate the spraying frequency and water pressure combination with the highest moisture retention efficiency.

[0117] The benchmark spraying mode is operated according to a regular cycle to maintain standard water pressure parameters. The frequency setting is based on a maturity theory model, and the temperature aging is equivalent to the constant temperature curing requirement.

[0118] The setting purpose is to dynamically optimize resource allocation, and the principle is to adjust the curing intensity according to the actual state of the material; and the effect is to avoid performance defects caused by insufficient curing or excessive moisture.

[0119] In the application, the advancement of the parameter setting module is embodied as a deep response to the properties of the concrete material. By tracking the active period of the cement hydration reaction, the spraying is automatically intensified during the strength jump period to inhibit early plastic cracks; in combination with the identification of the critical state of water evaporation, the moisture retention frequency is dynamically increased in a high-temperature environment to block the development of drying shrinkage cracks. The regional adaptation module relies on accurate perception of the hydraulic state to make the pipeline connection and the displacement of the hanging basket beat synchronous, and the laser positioning real-time correction technology further compensates for the spraying deviation caused by construction deformation, thereby ensuring the coverage integrity of complex curved surface regions.

[0120] Specifically, in the regional adaptation module:

[0121] The displacement state includes a hanging basket forward movement state and a hanging basket in-place state;

[0122] In the hanging basket forward movement state, the pipeline connection assembly is controlled to perform a separation action to disconnect the partition control branch from the water supply main pipe;

[0123] In the hanging basket in-place state, the pipeline connection assembly is controlled to perform a joint action to connect the main pipe extension section with the next section water supply main pipe;

[0124] The spatial positioning adjustment includes correcting the spraying direction of the double-spraying head structure through an angle adjustment mechanism.

[0125] In implementation, when the hydraulic cylinder thrust continuously exceeds the normal working threshold, it is determined that the hanging basket is in a moving condition. The threshold is calibrated through hanging basket empty-load and full-load movement tests, the pressure curve of the hydraulic system under different loads is recorded, and the critical point of pressure sudden increase is selected as the determination reference.

[0126] The in-place state determination principle is that when the hydraulic pressure is stable within the set fluctuation range, and the displacement sensor feedback change approaches zero, it is determined to be in the in-place state.

[0127] The forward movement state action is to trigger a quick disassembly joint separation instruction to automatically disconnect the partition branch from the main pipe. The separation action response time is optimized through human-machine cooperation tests: the influence of different response delays on the safety of the pipeline is tested, and the maximum allowable delay without pipeline pulling risk is selected.

[0128] The in-place state action controls the hydraulic locking of the extension section and the next section of the main pipe. The sealing performance is verified by a pressure decay test: the leakage rate is detected at the rated pressure, and optimized to within the industry-allowed upper limit.

[0129] The spatial positioning adjustment corrects the angle of the double spray heads through a worm gear mechanism. After positioning, the laser positioning instrument detects the distance between the spray head and the concrete surface. If the deviation exceeds the limit, the correction is triggered.

[0130] The angle compensation principle is to establish a geometric mapping model of the spray head installation coordinates and the beam profile, and to generate a correction amount through vector calculation. The typical position deviation caused by the form traveler deformation is measured in the test section. The water mist coverage blank area is compared under different deviations, and the maximum deviation when the blank area is less than the allowable value is selected as the threshold.

[0131] In the present application, the zoned spraying assembly is deeply integrated with the bridge form, breaking through the maintenance bottleneck of special-shaped structures. Multi-source data fusion is used to build a digital mirror of the maintenance state. The dynamic optimal strategy is generated by driving the material characteristics and the construction process. The spatial precise positioning is achieved by coupling the mechanical and control systems. The maintenance mode is shifted from passive remediation to active protection, and the resource consumption is upgraded to fine management and control.

[0132] Please refer to Figure 4 The present application also provides a control method for a road and bridge spraying maintenance system, which comprises:

[0133] Step S1, collect and acquire the flow monitoring data of each zoned control branch, and continuously acquire the displacement state signal of the cantilever casting construction equipment;

[0134] Step S2, determine the spraying control parameters according to the flow monitoring data combined with the characteristics of the concrete maintenance stage, and determine the pipe connection action instruction according to the displacement state signal;

[0135] Step S3, use the spraying control parameters to control the spraying assembly of the regional spraying module to execute the zoned spraying action;

[0136] Step S4, control the dynamic adaptation module to execute the pipe separation or connection operation according to the pipe connection action instruction;

[0137] Step S5, use the flow monitoring data during the spraying process to determine the parameter adjustment instruction, and adjust the output power of the booster pump and the on-off state of the zoned branch according to the parameter adjustment instruction.

[0138] Thus far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but it is readily understood by those skilled in the art that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the relevant technical features without departing from the principles of the present application, and the technical solutions after these changes or replacements will all fall within the protection scope of the present application.

[0139] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application; the present application can have various changes and variations for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A road and bridge spraying maintenance system, characterized in that, include: The water supply execution module includes an integrated water tank located at a predetermined position on the bridge structure, a booster pump fluidly connected to the integrated water tank, and a main water supply pipe laid along the extension direction of the bridge through the main water supply pipeline. The zone sprinkler module includes several zone control branches connected to the main water supply pipe. Each branch corresponds to the top surface curing area, the flange plate curing area, and the box girder interior curing area, respectively. The branches for the top surface curing area and the box girder interior curing area are equipped with multi-directional spray components; the branches for the flange plate curing area are equipped with wide-angle rotating spray components and are connected by flexible delivery pipelines. The intelligent control module is connected to the monitoring sensor signals of the booster pump and each zone control branch, respectively. The remote response module is connected to the intelligent control module via a wireless communication protocol to receive remote commands and forward them to the intelligent control module. The dynamic adaptation module includes a spraying component mounting bracket fixed on the cantilever construction equipment and a pipeline connection component, which is set at the junction of the main water supply pipe and the zone control branch to realize the separate dynamic connection of the pipeline. The spray assembly mounting frame is connected to the main beam, bottom longitudinal beam and inner transverse beam of the hanging basket by steel wire fasteners; the pipeline connection assembly includes a quick-release connector and a main pipe extension section; the quick-release connector is located at the junction of the main water supply pipe and the zone control branch; the main pipe extension section is connected to the end of the main water supply pipe before the hanging basket is displaced. The parameter setting module, which is connected to the intelligent control module and the area spraying module respectively, is used to set the spraying duration, water pressure parameters and area start-stop sequence according to the characteristics of the concrete curing stage; and to determine the spraying mode according to the concrete state characteristics and environmental characteristics; if the concrete state characteristics meet the preset enhanced curing conditions, the spraying mode is the high-intensity spraying mode; if the concrete state characteristics do not meet the preset enhanced curing conditions, the spraying mode is the baseline spraying mode. The preset enhanced curing conditions are that the concrete age is less than a preset age threshold, or the concrete surface temperature is greater than a preset temperature threshold. The area adaptation module, which is connected to the dynamic adaptation module and the area spraying module, is used to synchronously adjust the spatial positioning of the spraying component according to the displacement state of the cantilever construction equipment, and control the pipeline connection component to perform engagement or disengagement actions. The displacement states include the forward movement state and the in-position state of the hanging basket; in the forward movement state, the control pipeline connection component performs a separation action to disconnect the zone control branch from the main water supply pipe; in the in-position state, the control pipeline connection component performs a connection action to connect the main pipe extension section to the next section of the main water supply pipe; the spatial positioning adjustment includes correcting the spray direction of the dual-nozzle structure through an angle adjustment mechanism.

2. The bridge and road spraying maintenance system according to claim 1, characterized in that, In the area spraying module: The branch road of the maintenance area on the top surface of the box girder includes a rigid pipeline laid longitudinally along the main beam of the hanging basket, and the rigid pipeline is equipped with multiple double nozzle structures at intervals. The branch circuit of the chamber curing area includes a transverse pipeline array laid along the inner crossbeam of the hanging basket, and the transverse pipeline array is equipped with an adjustable dual-nozzle structure. The flange plate maintenance area branch includes a fan-shaped nozzle connected by a flexible pipeline. The fan-shaped nozzle is installed on the bottom longitudinal beam of the hanging basket and has a rotating structure. Each branch line is connected to the main water supply pipe via a tee joint.

3. The road and bridge spraying maintenance system according to claim 2, characterized in that, In the water supply execution module: The integrated water tank is a welded steel plate structure and is fixedly installed at the center of the top surface of the zero block of the bridge. The inlet of the booster pump is connected to the outlet of the integrated water tank, and the outlet of the booster pump is connected to the main water supply pipe. The main water supply pipe extends along the inner side of the bridge deck railing, and its material is polyethylene cold water pipe. The main water supply pipe is equipped with flow monitors at the junctions of the control branches in each zone. The power input terminal of the booster pump is electrically connected to the intelligent control module.

4. The road and bridge spraying maintenance system according to claim 3, characterized in that, The intelligent control module determines whether to adjust the spray parameters based on flow monitoring data, including: If the flow monitoring data is within the preset flow threshold range, the intelligent control module determines to maintain the current spray parameters. If the flow monitoring data exceeds the preset flow threshold range, the intelligent control module determines that the spray parameters need to be adjusted and the output power of the booster pump needs to be reduced. The traffic monitoring data is obtained in real time through the traffic monitors at the junctions of each zone control branch.

5. The road and bridge spraying maintenance system according to claim 4, characterized in that, The intelligent control module determines the booster pump power adjustment amount based on the flow monitoring data and the current water pressure parameters. The intelligent control module determines the opening and closing status adjustment of a specific branch based on the traffic monitoring data and the branch identifier of the zone.

6. A control method applied to the road and bridge spraying maintenance system according to any one of claims 1-5, characterized in that, The methods include: Step S1: Collect and acquire flow monitoring data of each zone control branch, and continuously acquire displacement status signals of the cantilever construction equipment; Step S2: Determine the spraying control parameters based on the flow monitoring data and the characteristics of the concrete curing stage, and determine the pipeline connection action command based on the displacement state signal. Step S3 is used to control the spray assembly of the area spray module to perform zoned spraying actions according to the spray control parameters. Step S4: Control the dynamic adaptation module to perform pipeline separation or connection operations according to the pipeline connection action command; Step S5 is used to determine parameter adjustment instructions based on the flow monitoring data during the spraying process, and adjust the output power of the booster pump and the opening and closing status of the zone branch according to the parameter adjustment instructions.

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