Viaduct rainwater storage and discharge control method and system based on water level induction

Abstract

The invention provides a viaduct rainwater storage and discharge control method and system based on water level induction, relates to the field of self-adaptive control, is applied to viaduct rainwater storage equipment, and comprises a plurality of porous drainage pipes and a plurality of rainwater storage assemblies, and discharge valves are arranged between the rainwater storage assemblies and municipal rainwater pipes. The method comprises the steps that according to historical rainfall information of the viaduct, the connection relation between a plurality of porous drainage pipes and a plurality of rainwater storage assemblies is determined, a plurality of connecting pipelines are arranged, and dispatching valves are arranged on the connecting pipelines; simulation operation information of the rainwater storage assembly is obtained, the optimal connection topology in various key rainfall scenes is determined, a key porous drainage pipe is determined, and water regimen monitoring equipment is arranged; and according to the real-time water regimen data and the optimal connection topology in various key rainfall scenes, the state of the dispatching valve, the operation of the rainwater storage assembly and the opening degree of the discharge valve are controlled, and the advantage of improving the rainwater storage efficiency of the viaduct is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of adaptive control, and particularly relates to a viaduct rainwater storage and discharge control method and system based on water level sensing. BACKGROUND

[0002] With the rapid growth of urban population density, the problem of urban traffic congestion is becoming more and more serious. In order to improve the traffic capacity of the city, save the occupied space and reduce the construction cost, more and more cities begin to build viaducts in the city. The construction of viaducts improves the traffic environment, but also faces the problems of large amount of rainwater discharge in the rainy season, high road surface temperature in the summer, and ice and snow on the road surface in the winter. Such problems are easy to cause damage to the viaduct and cause serious traffic accidents, thereby causing great loss to the safety of people's life and property.

[0003] In order to solve the above problems, a simple and practical method is to install rainwater collection and discharge pipelines on the viaduct deck, so that the rainwater can be directly discharged to the sewer under the viaduct through the discharge pipeline. However, this method is not conducive to the recycling of water resources, especially in the rainy season, causing a large amount of rainwater waste. Especially in summer, the temperature of the viaduct deck is too high, and a water truck is often needed to spray water for cooling, and the vegetation under the viaduct also needs to be artificially irrigated by the water truck. These methods do not make good use of rainwater, resulting in a lack of water resources on the one hand, and a large amount of water resources loss on the other hand.

[0004] Therefore, it is necessary to provide a viaduct rainwater storage and discharge control method and system based on water level sensing, for improving the efficiency of viaduct rainwater storage. SUMMARY

[0005] The application provides a viaduct rainwater storage and discharge control method based on water level sensing, which is applied to a viaduct rainwater storage device, and the viaduct rainwater storage device comprises a viaduct rainwater collection assembly and a plurality of rainwater storage assemblies, the viaduct rainwater collection assembly comprises a plurality of porous drainage pipes, and a discharge valve is arranged between the rainwater storage assembly and a municipal rainwater pipe, and the method comprises the following steps: determining the connection relationship between the plurality of porous drainage pipes and the plurality of rainwater storage assemblies according to historical rainfall information of the viaduct; setting a plurality of connection pipelines according to the connection relationship between the plurality of porous drainage pipes and the plurality of rainwater storage assemblies, wherein a scheduling valve is arranged on the connection pipeline; obtaining simulation operation information of the rainwater storage assembly according to the connection relationship between the plurality of porous drainage pipes and the plurality of rainwater storage assemblies and the historical rainfall information of the viaduct; determining the optimal connection topology of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under a plurality of key rainfall scenarios according to the simulation operation information of the rainwater storage assembly; determining a key porous drainage pipe from the plurality of porous drainage pipes according to the optimal connection topology of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under the plurality of key rainfall scenarios, and arranging a water regime monitoring device on the key porous drainage pipe; and controlling the state of the scheduling valve, the operation of the rainwater storage assembly and the opening degree of the discharge valve according to the real-time water regime data collected by the plurality of water regime monitoring devices and the optimal connection topology of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under the plurality of key rainfall scenarios.

[0006] Further, the historical rainfall information of the viaduct comprises the water level and flow rate of the plurality of porous drainage pipes at a plurality of historical rainfall time points in each historical rainfall process.

[0007] Further, the connection relationship between the plurality of porous drainage pipes and the plurality of rainwater storage assemblies is determined according to the historical rainfall information of the viaduct, and the method comprises the following steps: grouping a plurality of historical rainfalls according to the water level and flow rate of the plurality of porous drainage pipes at a plurality of historical rainfall time points in each historical rainfall process, and determining a plurality of key rainfall scenarios, wherein the key rainfall scenario comprises the water level and flow rate of the plurality of porous drainage pipes at a plurality of rainfall time points; for each key rainfall scenario, determining the total drainage amount of each porous drainage pipe corresponding to the key rainfall scenario and the drainage similarity of any two porous drainage pipes corresponding to the key rainfall scenario according to the water level and flow rate of the plurality of porous drainage pipes at the plurality of rainfall time points; for any two porous drainage pipes, calculating the comprehensive similarity of the two porous drainage pipes according to the drainage similarity of the two porous drainage pipes corresponding to each key rainfall scenario; grouping the plurality of porous drainage pipes according to the comprehensive similarity and distance of any two porous drainage pipes, and determining a plurality of porous drainage pipe groups, wherein the comprehensive similarity of any two porous drainage pipes in the porous drainage pipe group is less than a comprehensive similarity threshold value, and the distance is less than a distance threshold value; and for each porous drainage pipe group, determining the rainwater storage assembly connected by the porous drainage pipe group according to the total drainage amount of each porous drainage pipe included in the porous drainage pipe group corresponding to each key rainfall scenario.

[0008] Further, according to the connection relationship between the plurality of porous drainage pipes and the plurality of rainwater storage assemblies and historical rainfall information of the viaduct, simulation operation information of the rainwater storage assemblies is obtained, including: determining a plurality of connection topologies according to the connection relationship between the plurality of porous drainage pipes and the plurality of rainwater storage assemblies; for each key rainfall scenario, determining simulation operation information of the rainwater storage assemblies in each connection topology, wherein the simulation operation information includes total water storage and drainage of the rainwater storage assemblies.

[0009] Further, according to the simulation operation information of the rainwater storage assemblies, an optimal connection topology of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under a plurality of key rainfall scenarios is determined, including: establishing a multi-dimensional topology evaluation function; for each key rainfall scenario, determining a multi-dimensional topology evaluation function value of each connection topology according to the simulation operation information of the rainwater storage assemblies in each connection topology, and determining the optimal connection topology of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under the key rainfall scenario according to the multi-dimensional topology evaluation function value of each connection topology.

[0010] Further, according to the optimal connection topology of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under a plurality of key rainfall scenarios, a key porous drainage pipe is determined from the plurality of porous drainage pipes, including: for each porous drainage pipe, calculating a water regime similarity of the porous drainage pipe under any two key rainfall scenarios according to water levels and flow rates of the porous drainage pipe at a plurality of rainfall time points under the any two key rainfall scenarios; calculating a topology similarity of the optimal connection topology of the any two key rainfall scenarios; for each porous drainage pipe, calculating a topology influence value of the porous drainage pipe according to the water regime similarity of the porous drainage pipe under the any two key rainfall scenarios and the topology similarity of the optimal connection topology of the any two key rainfall scenarios; and determining a key porous drainage pipe from the plurality of porous drainage pipes according to the topology influence value of each porous drainage pipe.

[0011] Further, the viaduct rainwater collection assembly further comprises a full-permeable pavement arranged on both sides of the viaduct and a gravel layer arranged under the full-permeable pavement, a water-permeable geotextile is arranged between the full-permeable pavement and the gravel layer, and the porous drainage pipe is arranged in the gravel layer; the rainwater storage assembly comprises a distribution tank in communication with the connecting pipeline, a water storage tank, and a vacuum device, an overflow plate is arranged in the water storage tank, the overflow plate is used to divide the space inside the water storage tank into a first water storage area and a second water storage area, the first water storage area is located above the distribution tank, a filler area is arranged in the distribution tank, the first water storage area is in communication with the filler area, and the vacuum device is arranged on the water storage tank; the first water storage area is provided with a first water level sensor, and the second water storage area is provided with a second water level sensor.

[0012] Further, according to the real-time water regime data collected by the plurality of water regime monitoring devices and the optimal connection topologies of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under a plurality of key rainfall scenarios, the state of the scheduling valve is controlled: according to the real-time water regime data collected by the plurality of water regime monitoring devices and the optimal connection topologies of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under a plurality of key rainfall scenarios, the real-time optimal connection topologies are determined; according to the real-time optimal connection topologies, the state of the scheduling valve of the plurality of connecting pipes is controlled.

[0013] Further, according to the real-time water regime data collected by the plurality of water regime monitoring devices, the operation of the rainwater storage assembly and the opening degree of the discharge valve are controlled, and the method further comprises: for each rainwater storage assembly, according to the data collected by the first water level sensor, it is judged whether to start the vacuum device, if yes, the vacuum device is started, the internal air pressure of the water storage tank is adjusted, according to the data collected by the second water level sensor, it is judged whether to start the discharge valve, if yes, according to the real-time water regime data collected by the plurality of water regime monitoring devices and the data collected by the second water level sensor, the opening degree of the discharge valve is controlled.

[0014] The application provides a viaduct rainwater storage and discharge control system based on water level sensing, which is used to execute the viaduct rainwater storage and discharge control method based on water level sensing, and comprises: a connection analysis module, which is used to determine the connection relationship between the plurality of porous drainage pipes and the plurality of rainwater storage assemblies according to historical rainfall information of the viaduct; a pipe connection module, which is used to set the plurality of connecting pipes according to the connection relationship between the plurality of porous drainage pipes and the plurality of rainwater storage assemblies, wherein the scheduling valve is arranged on the connecting pipe; an operation simulation module, which is used to obtain the simulation operation information of the rainwater storage assembly according to the connection relationship between the plurality of porous drainage pipes and the plurality of rainwater storage assemblies and the historical rainfall information of the viaduct; determine the optimal connection topologies of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under a plurality of key rainfall scenarios according to the simulation operation information of the rainwater storage assembly; determine the key porous drainage pipe from the plurality of porous drainage pipes according to the optimal connection topologies of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under a plurality of key rainfall scenarios, and arrange the water regime monitoring device on the key porous drainage pipe; and an operation scheduling module, which is used to control the state of the scheduling valve, the operation of the rainwater storage assembly and the opening degree of the discharge valve according to the real-time water regime data collected by the plurality of water regime monitoring devices and the optimal connection topologies of the plurality of porous drainage pipes and the plurality of rainwater storage assemblies under a plurality of key rainfall scenarios.

[0015] Compared with the prior art, the viaduct rainwater storage and discharge control method and system based on water level sensing provided by the application at least have the following beneficial effects: The optimal connection topology is determined by historical rainfall information to realize dynamic matching of the multi-hole drainage pipe and the rainwater storage assembly, and to improve the adaptability of the system to different rainfall intensity and duration. Based on the simulation operation information, the key multi-hole drainage pipes are screened and the monitoring equipment is deployed to reduce unnecessary sensor investment and reduce construction and operation cost. Real-time water regime data drive valve and discharge valve control to quickly respond to waterlogging risk and avoid elevated road surface waterlogging and downstream pipe network overload. By optimizing the operation of the storage assembly and the opening degree of the discharge valve, rainwater storage and resource utilization (such as irrigation and greening) are considered to support the construction goal of sponge city. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present specification will be further illustrated in the manner of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting, and in these embodiments, the same numbers represent the same structures, wherein: Figure 1 is a structural schematic diagram of an elevated bridge rainwater storage device according to some embodiments of the present specification; Figure 2 is a structural schematic diagram of an elevated bridge rainwater collection assembly according to some embodiments of the present specification; Figure 3 is a structural schematic diagram of a rainwater storage assembly according to some embodiments of the present specification; Figure 4 is a flow chart of a water level sensing based elevated bridge rainwater storage and discharge control method according to some embodiments of the present specification; Figure 5 is a schematic diagram of a connection topology according to some embodiments of the present specification; Figure 6 is a module diagram of a water level sensing based elevated bridge rainwater storage and discharge control system according to some embodiments of the present specification.

[0017] In the figure, 1, elevated bridge; 2, elevated bridge rainwater collection assembly; 21, full permeable pavement; 22, gravel layer; 23, permeable geotextile; 24, multi-hole drainage pipe; 3, rainwater storage assembly; 31, distribution tank; 311, filler area; 32, water storage tank; 321, first water storage area; 322, second water storage area; 323, overflow plate; 33, vacuum device; 4, connecting pipeline; 5, municipal rainwater pipe. DETAILED DESCRIPTION

[0018] To more clearly illustrate the technical solutions of the embodiments in this specification, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this specification. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0019] Figure 1 This is a structural schematic diagram of an elevated bridge rainwater storage device according to some embodiments of this specification, such as... Figure 1 As shown, the elevated bridge rainwater storage equipment includes an elevated bridge rainwater collection component 2 and multiple rainwater storage components 3.

[0020] Figure 2 This is a structural schematic diagram of the elevated bridge rainwater harvesting assembly 2 according to some embodiments of this specification, such as... Figure 2 As shown, the elevated bridge rainwater collection component 2 includes multiple porous drainage pipes 24. The elevated bridge rainwater collection component 2 also includes a fully permeable pavement 21 set on both sides of the elevated bridge 1 and a pebble layer 22 set under the fully permeable pavement 21. A permeable geotextile 23 is set between the fully permeable pavement 21 and the pebble layer 22. The porous drainage pipes 24 are laid on the pebble layer 22. Multiple water inlets are opened on the side of the porous drainage pipes 24 facing the fully permeable pavement 21.

[0021] Figure 3 This is a structural schematic diagram of the rainwater storage component 3 according to some embodiments of this specification, such as... Figure 3 As shown, a discharge valve is installed between the rainwater storage component 3 and the municipal rainwater pipe 5. The rainwater storage component 3 includes a distribution pool 31, a water storage tank 32, and a vacuum device 33, which are connected to the connecting pipe 4. An overflow plate 323 is installed inside the water storage tank 32. The overflow plate 323 is used to divide the internal space of the water storage tank 32 into a first water storage area 321 and a second water storage area 322. The first water storage area 321 is located above the distribution pool 31. A packing area 311 is installed inside the distribution pool 31. The first water storage area 321 is connected to the packing area 311. The vacuum device 33 is installed on the water storage tank 32. A first water level sensor is installed in the first water storage area 321, and a second water level sensor is installed in the second water storage area 322.

[0022] The working principle of the elevated bridge rainwater storage equipment is as follows: Rainwater from the elevated bridge 1 is discharged through the road cross slope to the fully permeable pavement on the side of the road. Under the action of the fully permeable pavement, the rainwater enters the porous drainage pipe 24 arranged under the fully permeable pavement. The rainwater on the elevated bridge 1 enters the distribution pool 31 through the drainage pipe. The denser impurities can be deposited at the bottom of the distribution pool 31, while the less dense impurities can be intercepted by the filling area 311. There is a permeable geotextile 23 between the filling area 311 and the water storage tank 32. After passing through the distribution pool 31 and the filling area 311, the rainwater enters the first water storage area 321. When the water level in the first water storage area 321 rises to a certain level, the vacuum device 33 system at the top of the water storage tank 32 starts to operate. Because the atmospheric pressure at the top decreases, the rainwater enters the first water storage area 321 faster under the action of atmospheric pressure. When the water level in the first water storage area 321 reaches the height of the overflow plate 323, the upper clean rainwater crosses the overflow plate 323 and enters the second water storage area 322. A flexible hose is connected to the bottom of the second water storage area 322, allowing clean rainwater from this area to be used for irrigation during dry, sunny days. Additionally, a rainwater overflow pipe is installed at the bottom of the second water storage area 322; when the water depth exceeds a certain level, excess rainwater flows through this overflow pipe into the municipal stormwater system for discharge. When water is needed on a sunny day, the sewage pipe switch connected to the distribution tank 31 is opened, and the vacuum environment of the storage tank 32 is broken. The rainwater stored in the first water storage area 321 can then quickly flush the filler area 311 and the distribution tank 31, removing deposited impurities. The rainwater stored in the second water storage area 322 remains unaffected and can be used for irrigation, etc.

[0023] Figure 4 This is a flowchart illustrating a method for controlling rainwater storage and discharge on elevated bridges based on water level sensing, according to some embodiments of this specification. Figure 4 As shown, the method for controlling rainwater storage and discharge on elevated bridges based on water level sensing may include the following steps.

[0024] S1. Based on the historical rainfall information of the viaduct, determine the connection relationship between multiple perforated drainage pipes and multiple rainwater storage components.

[0025] In some embodiments, the historical rainfall information of the viaduct may include the water level and flow rate of multiple perforated drainage pipes at multiple historical rainfall time points during each historical rainfall event.

[0026] Specifically, water level sensors and flow velocity sensors are installed inside multiple porous drainage pipes to monitor changes in water level and flow velocity. Water level sensors can be of different types, such as float-type, pressure-type, or ultrasonic-type, and can accurately measure the water level height inside the porous drainage pipes; flow velocity sensors can measure the flow speed of rainwater using principles such as electromagnetic induction and the ultrasonic Doppler effect.

[0027] In some embodiments, determining the connection relationship between multiple porous drainage pipes and multiple rainwater storage components based on historical rainfall information of the viaduct includes: Based on the water level and flow velocity of multiple perforated drainage pipes at multiple historical precipitation time points during each historical rainfall event, multiple historical rainfall events were grouped to identify multiple key rainfall scenarios. Among them, the key rainfall scenarios include the water level and flow velocity of multiple perforated drainage pipes at multiple precipitation time points. For each key rainfall scenario, based on the water level and flow velocity of multiple perforated drainage pipes at multiple rainfall time points, the total drainage volume of each perforated drainage pipe corresponding to the key rainfall scenario and the drainage similarity of any two perforated drainage pipes corresponding to the key rainfall scenario are determined. For any two porous drainage pipes, calculate the comprehensive similarity between the two porous drainage pipes based on the drainage similarity of the two porous drainage pipes for each key rainfall scenario. Based on the comprehensive similarity and distance between any two porous drainage pipes, multiple porous drainage pipes are grouped to determine multiple porous drainage pipe groups. Among them, the comprehensive similarity between any two porous drainage pipes in a porous drainage pipe group is less than the comprehensive similarity threshold and the distance is less than the distance threshold. For each porous drain pipe assembly, the rainwater storage component connected to the porous drain pipe assembly is determined based on the total drainage volume corresponding to each key rainfall scenario for each porous drain pipe in the assembly.

[0028] Specifically, for any two historical rainfall events, the water level and flow velocity at multiple historical rainfall times corresponding to the two events can be calculated for each perforated drainage pipe, and the rainfall similarity between the two events can be calculated. Specifically, for each perforated drainage pipe, the mean and standard deviation of the water level and the mean and standard deviation of the flow velocity at multiple historical rainfall times corresponding to the two events can be calculated, yielding the mean water level, standard deviation of water level, mean flow velocity, and standard deviation of flow velocity. The differences between the mean water level, standard deviation of water level, mean flow velocity, and standard deviation of flow velocity corresponding to the two events corresponding to the two events can be calculated, yielding the absolute values ​​of the differences in the mean water level, the absolute values ​​of the differences in the standard deviation of water level, the absolute values ​​of the differences in the mean flow velocity, and the absolute values ​​of the differences in the standard deviation of flow velocity. The absolute values ​​of the values, the absolute values ​​of the standard deviations of the water level, the absolute values ​​of the mean and standard deviations of the flow velocity are summed to calculate the comprehensive difference between two historical rainfall events corresponding to the perforated drainage pipe. The comprehensive difference between two historical rainfall events corresponding to each perforated drainage pipe is summed to obtain the total difference between the two historical rainfall events. Based on the total difference between the two historical rainfall events, the rainfall similarity between the two historical rainfall events is calculated. The larger the total difference between the two historical rainfall events, the smaller the rainfall similarity. For example, the rainfall similarity between the two historical rainfall events is obtained by adding 1 to the rainfall similarity between the two historical rainfall events and then taking the reciprocal.

[0029] Clustering algorithms are used to group multiple historical rainfall events based on the similarity between any two events, thus determining historical rainfall groups. Taking the K-Means algorithm as an example, the number of clusters needs to be specified in advance. k This refers to the number of groups into which historical rainfall is divided. k The value can be determined using methods such as the elbow rule and silhouette coefficient to find the optimal number of clusters, resulting in high intra-group similarity and low inter-group similarity. Random selection is then used. k The system generates an initial cluster center, and then assigns each historical rainfall event to the group containing the nearest cluster center based on the similarity between the event and the cluster center. The cluster centers of each group are then recalculated, and this process is iterated until the cluster centers no longer change or the preset number of iterations is reached.

[0030] For each historical rainfall group and each perforated drainage pipe, the average water level and flow velocity of the perforated drainage pipe at multiple historical precipitation time points included in the historical rainfall group can be calculated to obtain the key rainfall scenario corresponding to the historical rainfall group.

[0031] For a circular perforated drainage pipe, assuming the pipe radius is r, and at a certain rainfall time, the average flow velocity inside the pipe is v, and the water level is h (h≤r), the effective cross-sectional area for water flow is:

[0032] flow Q = A × v .

[0033] For each perforated drainage pipe, the mean and standard deviation of the water level and the mean and standard deviation of the flow velocity at multiple precipitation time points corresponding to the key rainfall scenarios can be calculated to obtain the mean water level, standard deviation of the water level, mean flow velocity, and standard deviation of the flow velocity.

[0034] For any two porous drainage pipes, the differences between the mean water level, standard deviation of water level, mean flow velocity, and standard deviation of flow velocity corresponding to the key rainfall scenarios of the two porous drainage pipes can be calculated. The absolute values ​​of the differences in the mean water level, standard deviation of water level, mean flow velocity, and standard deviation of flow velocity corresponding to the key rainfall scenarios of the two porous drainage pipes can then be calculated. The sum of these absolute values ​​is then obtained to obtain the comprehensive difference between the two porous drainage pipes corresponding to the key rainfall scenarios. Based on the comprehensive difference between the two porous drainage pipes corresponding to the key rainfall scenarios, the drainage similarity between the two porous drainage pipes corresponding to the key rainfall scenarios can be calculated. The larger the comprehensive difference between the two porous drainage pipes corresponding to the key rainfall scenarios, the smaller the drainage similarity between the two porous drainage pipes corresponding to the key rainfall scenarios. For example, the drainage similarity of the two porous drainage pipes corresponding to key rainfall scenarios can be obtained by adding 1 to the comprehensive difference of the two porous drainage pipes to the key rainfall scenarios.

[0035] The average similarity of drainage for each key rainfall scenario for the two porous drainage pipes can be calculated to obtain the comprehensive similarity of the two porous drainage pipes.

[0036] For example, multiple porous drainage pipes can be grouped according to the comprehensive similarity and distance between any two porous drainage pipes, following the process below: Initialization: Create an empty group list `groups` to store the final grouping results.

[0037] Traverse the drain pipes: For each ungrouped perforated drain pipe i, perform the following operations: Create a new temporary group temp_group and add the perforated drain pipe i to it.

[0038] Iterate through all ungrouped porous drain pipes j (j is not i), and check whether porous drain pipe j satisfies the following conditions: the overall similarity with all porous drain pipes in temp_group is less than the overall similarity threshold and the distance is less than the distance threshold.

[0039] If the conditions are met, add the perforated drain pipe j to temp_group.

[0040] Repeat the above traversal process until no new perforated drain pipes can be added to temp_group.

[0041] Add temp_group to the groups list.

[0042] Remove duplicates and optimize: Check if there are groups that can be merged in the groups list (e.g., drain pipes in two groups meet the inclusion criteria), perform merge optimization, and obtain the final grouping result.

[0043] For each porous drainage pipe in the porous drainage pipe group, calculate the average total drainage volume of the porous drainage pipe for each key rainfall scenario to obtain the average total drainage volume of the porous drainage pipe.

[0044] The average drainage volume of each porous drain pipe in the porous drain pipe assembly is summed to obtain the total average drainage volume of the entire assembly. Based on the storage capacity of each individual rainwater storage component, the number of rainwater storage components connected to the porous drain pipe assembly is determined. Alternatively, the total average drainage volume of the porous drain pipe assembly can be divided by the storage capacity of each individual rainwater storage component, and the result can be rounded up to obtain the number of rainwater storage components connected to the porous drain pipe assembly.

[0045] Understandably, the overall similarity measure measures the degree of similarity in drainage characteristics between porous drainage pipes, encompassing multiple key indicators such as total drainage volume, drainage rate trend, and peak drainage time. When the overall similarity of two porous drainage pipes is less than a threshold, it means that they have significant differences in drainage characteristics. For example, one drainage pipe may have a larger drainage volume at the beginning of rainfall, while another may have a larger drainage volume at the end; or one drainage pipe may have a relatively stable drainage rate, while another may have a larger fluctuation. This difference results in different drainage time distributions and flow rates when facing the same rainfall. Rainwater storage components have a certain capacity limit. If multiple porous drainage pipes connected to the same rainwater storage component simultaneously discharge large amounts of water, and their drainage characteristics are highly similar (i.e., high overall similarity), then in a short period of time, a large amount of rainwater will rapidly flood into the rainwater storage component, easily causing its water level to rise sharply, even exceeding the design capacity, leading to problems such as overflow and bursting. By grouping drainage pipes with low overall similarity and connecting them to different rainwater storage components, drainage pressure can be distributed, the load on individual rainwater storage components can be reduced, the inflow load of each rainwater storage component can be balanced, system fluctuations caused by excessive local drainage can be reduced, and the stability and reliability of the entire drainage system can be improved.

[0046] S2. Based on the connection relationship between multiple perforated drainage pipes and multiple rainwater storage components, multiple connecting pipes are installed.

[0047] The connecting pipeline is equipped with a control valve.

[0048] Specifically, for each porous drain pipe in the porous drain pipe assembly and each rainwater storage component connected to the porous drain pipe assembly, a connecting pipe is provided to connect the porous drain pipe and the rainwater storage component. For example, if the porous drain pipe assembly includes porous drain pipes A1, A2, and A3, and the rainwater storage components connected to the porous drain pipe assembly include B1 and B2, a connecting pipe needs to be provided between porous drain pipe A1 and rainwater storage component B1, between porous drain pipe A2 and rainwater storage component B1, between porous drain pipe A3 and rainwater storage component B1, between porous drain pipe A1 and rainwater storage component B2, between porous drain pipe A2 and rainwater storage component B2, and between porous drain pipe A3 and rainwater storage component B2.

[0049] S3. Based on the connection relationship between multiple porous drainage pipes and multiple rainwater storage components and the historical rainfall information of the viaduct, obtain the simulated operation information of the rainwater storage components.

[0050] Specifically, it includes: Based on the connection relationship between multiple porous drainage pipes and multiple rainwater storage components, various connection topologies are determined; For each key rainfall scenario, the simulated operating information of the rainwater storage component is determined for each connection topology, where the simulated operating information includes the total water storage capacity and drainage capacity of the rainwater storage component.

[0051] Specifically, the connection topology describes the structural form and spatial layout of the physical connections between multiple porous drainage pipes and multiple rainwater storage components. It reflects the path and manner in which rainwater flows from the drainage pipes to the storage components within the system. Different connection topologies will have different impacts on the efficiency, reliability, and management and maintenance of rainwater harvesting, storage, and discharge.

[0052] In the connection topology, a porous drain pipe assembly is connected to a rainwater storage component. Taking the porous drain pipe assembly as including porous drain pipes A1, A2, and A3, and the rainwater storage component as including B1 and B2, as an example, the following different connection topologies can be determined: Figure 5 This is a schematic diagram of the connection topology shown according to some embodiments of this specification, such as... Figure 5 As shown, the connection topology is C1: The porous drain pipe A1 is connected to the rainwater storage component B1; The porous drain pipe A2 is connected to the rainwater storage component B2; The porous drain pipe A3 is connected to the rainwater storage component B1.

[0053] Connect topology C2: The porous drain pipe A1 is connected to the rainwater storage component B1; The porous drain pipe A2 is connected to the rainwater storage component B1; The porous drain pipe A3 is connected to the rainwater storage component B2.

[0054] Connect topology C2: The porous drain pipe A1 is connected to the rainwater storage component B1; The porous drain pipe A2 is connected to the rainwater storage component B2; The porous drain pipe A3 is connected to the rainwater storage component B2.

[0055] Build a simulation model of the elevated bridge's rainwater harvesting components and multiple rainwater storage components in simulation software (e.g., SWMM (Storm Water Management Model)). Based on each determined connection topology, establish connecting pipes between porous drainage pipes and the rainwater storage components in the simulation model. Set parameters such as pipe diameter, length, and slope, and configure control rules for the scheduling valves. For example, valves can be set to automatically close or open when the rainwater storage components reach a certain water level to achieve reasonable rainwater allocation. Input the rainfall duration and intensity changes of the selected key rainfall scenarios into the simulation model. Different time steps can be set according to actual needs; generally, shorter time steps (e.g., 1 minute or 5 minutes) are recommended to improve simulation accuracy. After completing the model building and parameter settings, run the simulation software for calculation. The software will simulate the rainwater generation, confluence, storage, and discharge processes in the site based on the input rainfall data, site parameters, and connection topology information, and record simulation operation information such as the total water storage and drainage volume of the rainwater storage components at each time step.

[0056] S4. Based on the simulated operation information of the rainwater storage components, determine the optimal connection topology between multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios.

[0057] Specifically, it includes: Establish a multi-dimensional topology evaluation function; For each critical rainfall scenario, based on the simulated operation information of the rainwater storage component in each connection topology, the multi-dimensional topology evaluation function value of each connection topology is determined. Based on the multi-dimensional topology evaluation function value of each connection topology, the optimal connection topology of multiple porous drainage pipes and multiple rainwater storage components under the critical rainfall scenario is determined.

[0058] Specifically, the multi-dimensional topology evaluation function comprehensively considers multiple key factors affecting the performance of a stormwater management system. By quantifying these factors and assigning different weights, a function is constructed that can comprehensively evaluate the quality of the connectivity topology. For example, the multi-dimensional topology evaluation function may include the following dimensions: Rainwater utilization efficiency reflects the degree to which a system effectively collects and utilizes rainwater. It can be measured by calculating the ratio of the total water storage capacity of rainwater storage components to the total rainfall in the area during the rainfall period. For example, rainwater utilization efficiency is the ratio of the sum of the water storage capacity of all rainwater storage components at the end of the simulation to the total rainfall. The higher the rainwater utilization efficiency, the larger the multi-dimensional topology evaluation function value. The total path length refers to the sum of the lengths of all connecting pipes in a specific porous drain pipe and rainwater storage module connection topology. It reflects the total distance rainwater travels from the porous drain pipe to the rainwater storage module through the pipes. For example, in a simple system, if a porous drain pipe A is connected to a rainwater storage module B through a pipe and the length of this pipe is 10 meters, then the total path length of this connection topology is 10 meters. If the system is more complex, with multiple drain pipes and multiple storage modules, and multiple connecting pipes, the total path length is the sum of the lengths of all these pipes. The longer the total path length, the smaller the multi-dimensional topology evaluation function value.

[0059] Storage imbalance refers to the degree of unevenness in the amount of rainwater stored by multiple rainwater storage components during rainfall, under a specific connection topology. Ideally, each storage component should approach its maximum storage capacity simultaneously, avoiding situations where some components fill up prematurely while others have significant idle capacity. Storage imbalance can be obtained by calculating the standard deviation of the water storage capacity of all rainwater storage components at the end of the simulation. The greater the storage imbalance, the smaller the value of the multi-dimensional topology evaluation function.

[0060] Based on the collected simulation operation information, the index values ​​of each connection topology in each dimension are calculated, and the comprehensive evaluation function value of each connection topology is calculated according to the established multi-dimensional topology evaluation function.

[0061] The multi-dimensional topology evaluation function values ​​of each connection topology are compared, and the connection topology with the largest evaluation function value is the optimal connection topology for this key rainfall scenario. Because the evaluation function comprehensively considers multiple important factors such as rainwater utilization efficiency, drainage safety, construction cost, and operation and maintenance difficulty, a larger evaluation function value indicates that the connection topology performs better in overall performance.

[0062] S5. Based on the optimal connection topology of multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios, identify the key porous drainage pipes from the multiple porous drainage pipes, and install water monitoring equipment on the key porous drainage pipes.

[0063] Specifically, it includes: For each perforated drainage pipe, the water level and flow velocity of the perforated drainage pipe at multiple precipitation time points under any two key rainfall scenarios are used to calculate the water situation similarity of the perforated drainage pipe under any two key rainfall scenarios. Calculate the topological similarity of the optimal connection topology between any two key rainfall scenarios; For each porous drainage pipe, the topological influence value of the porous drainage pipe is calculated based on the water situation similarity of the porous drainage pipe under any two key rainfall scenarios and the topological similarity of the optimal connection topology of any two key rainfall scenarios. Based on the topological influence value of each porous drain pipe, the critical porous drain pipe is identified from the multiple porous drain pipes.

[0064] Specifically, for each perforated drainage pipe, the differences between the mean water level, standard deviation of water level, mean flow velocity, and standard deviation of flow velocity corresponding to two key rainfall scenarios can be calculated. The absolute values ​​of these differences are then summed to obtain the comprehensive difference between the perforated drainage pipe and the two key rainfall scenarios. Based on this comprehensive difference, the similarity of the water conditions under the two key rainfall scenarios is calculated. The larger the comprehensive difference, the smaller the similarity of the water conditions under the two key rainfall scenarios. For example, the similarity of water conditions of the multi-hole drainage pipe under two key rainfall scenarios can be obtained by adding 1 to the comprehensive difference between the two key rainfall scenarios and taking the reciprocal.

[0065] For each porous drain pipe, based on the optimal connection topology of two key rainfall scenarios, determine whether the rainwater storage components connected to the porous drain pipe in the two key rainfall scenarios are consistent. If so, mark the porous drain pipe as a matched porous drain pipe. The ratio of the number of matched porous drain pipes to the total number of porous drain pipes is used as the topological similarity of the optimal connection topology of the two key rainfall scenarios.

[0066] For each porous drainage pipe, the hydrological similarity of the porous drainage pipe under any two key rainfall scenarios and the topological similarity of the optimal connection topology of any two key rainfall scenarios are substituted into the calculation formula of the correlation coefficient (e.g., Spearman rank correlation coefficient, distance correlation coefficient, or maximum information coefficient (MIC)) to obtain the correlation coefficient between the porous drainage pipe and the optimal connection topology. The absolute value of the correlation coefficient is then taken to obtain the topological influence value of the porous drainage pipe.

[0067] Porous drainage pipes with a topology influence value greater than a topology influence value threshold (e.g., 0.5) are designated as critical porous drainage pipes. The topology influence value threshold can be determined based on human experience or experimental data.

[0068] S6. Based on real-time hydrological data collected by multiple hydrological monitoring devices and the optimal connection topology of multiple perforated drainage pipes and multiple rainwater storage components under various key rainfall scenarios, control the status of the scheduling valve, the operation of the rainwater storage components, and the opening degree of the discharge valve.

[0069] In some embodiments, S6 includes: Based on real-time hydrological data collected by multiple hydrological monitoring devices and the optimal connection topology of multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios, the real-time optimal connection topology is determined. Based on the real-time optimal connection topology, the state of the scheduling valves of multiple connecting pipes is controlled. For example, if the real-time optimal connection topology is that the perforated drain pipe A1 is connected to the rainwater storage component B1, then the scheduling valve of the connecting pipe between the perforated drain pipe A1 and the rainwater storage component B1 is controlled to be in the open state, and the scheduling valve of the connecting pipe between the perforated drain pipe A1 and other rainwater storage components is controlled to be in the closed state.

[0070] Referring to the method of calculating the similarity between two historical rainfall events, based on real-time hydrological data collected by multiple hydrological monitoring devices, the similarity between the current rainfall scenario and each key rainfall scenario is calculated. The optimal connection topology of multiple porous drainage pipes and multiple rainwater storage components under the key rainfall scenario with the highest similarity is taken as the real-time optimal connection topology.

[0071] Understandably, by calculating the similarity between current rainfall and key rainfall scenarios, the optimal connection topology is quickly matched, making the system response more closely match the actual rainfall characteristics. Based on the real-time optimal connection topology, scheduling valves are opened in a targeted manner to ensure efficient rainwater flow into the target storage components. A proven and reliable topology is employed to reduce the risk of poor drainage or storage component overflow under extreme rainfall.

[0072] In some embodiments, S6 further includes: For each rainwater storage component, based on the data collected by the first water level sensor, it is determined whether to activate the vacuum device. If so, the vacuum device is activated to adjust the internal air pressure of the storage tank. Based on the data collected by the second water level sensor, it is determined whether to activate the discharge valve. If so, the opening degree of the discharge valve is controlled based on the real-time water level data collected by multiple water level monitoring devices and the data collected by the second water level sensor.

[0073] Specifically, if the water level in the first water storage area is determined to be higher than the first preset water level based on the data collected by the first water level sensor, the vacuum device is activated. If the water level in the second water storage area is determined to be higher than the second preset water level based on the data collected by the second water level sensor, the discharge valve is opened. The first and second preset water levels can be determined based on manual experience or experimental data.

[0074] It can be based on real-time hydrological data collected by multiple hydrological monitoring devices and data collected by a second water level sensor in any way.

[0075] For example, experiments can be conducted to determine the opening degree of the discharge valve corresponding to the water level of different secondary water storage areas under each key rainfall scenario. Based on the opening degree of the discharge valve corresponding to the water level of different secondary water storage areas under the key rainfall scenario with the highest rainfall similarity, the opening degree of the discharge valve corresponding to the water level of the current secondary water storage area can be determined.

[0076] For example, a multiple regression model can be established. The independent variables of the multiple regression model can include the mean water level, standard deviation of water level, mean flow velocity, and standard deviation of flow velocity of each key porous drain pipe connected to the rainwater storage component, as well as the water level of the second water storage area. The dependent variable of the multiple regression model is the opening degree of the discharge valve. Based on real-time water data collected by multiple water monitoring devices, the mean water level, standard deviation of water level, mean flow velocity, and standard deviation of flow velocity of each key porous drain pipe connected to the rainwater storage component are determined. Based on the data collected by the second water level sensor, the water level of the second water storage area is determined. Substituting these values ​​into the multiple regression model, the opening degree of the discharge valve is obtained and controlled.

[0077] Understandably, the first and second water level sensors trigger the vacuum equipment and the discharge valve respectively, enabling tiered control of the water storage tank's "rapid water intake - intelligent drainage." In this tiered control architecture, the vacuum equipment prioritizes ensuring sufficient water storage space, while the discharge valve subsequently adjusts the drainage rhythm, forming a dual buffer mechanism to effectively cope with sudden changes in rainfall.

[0078] Figure 6 This is a block diagram of a water level sensing-based elevated bridge rainwater storage and discharge control system, as shown in some embodiments of this specification. Figure 6 As shown, the elevated bridge rainwater storage and discharge control system based on water level sensing may include a connection analysis module, a pipeline connection module, an operation simulation module, and an operation scheduling module.

[0079] The connection analysis module is used to determine the connection relationship between multiple perforated drainage pipes and multiple rainwater storage components based on the historical rainfall information of the viaduct; The pipe connection module is used to set up multiple connecting pipes according to the connection relationship between multiple perforated drainage pipes and multiple rainwater storage components. The connecting pipes are equipped with control valves. The simulation module is used to obtain simulated operational information of the rainwater storage components based on the connection relationships between multiple porous drainage pipes and multiple rainwater storage components and the historical rainfall information of the viaduct; based on the simulated operational information of the rainwater storage components, the optimal connection topology between the multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios is determined; based on the optimal connection topology between the multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios, key porous drainage pipes are identified from the multiple porous drainage pipes, and water monitoring equipment is installed on the key porous drainage pipes; The operation scheduling module is used to control the status of the scheduling valves, the operation of the rainwater storage components, and the opening degree of the discharge valves based on real-time water data collected by multiple water monitoring devices and the optimal connection topology of multiple perforated drainage pipes and multiple rainwater storage components under various key rainfall scenarios.

[0080] The elevated bridge rainwater storage and discharge control system based on water level sensing can apply the above-mentioned elevated bridge rainwater storage and discharge control method based on water level sensing, which will not be elaborated here.

[0081] Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments described herein. Other variations may also fall within the scope of this specification. Therefore, alternative configurations of the embodiments described herein are intended to be illustrative rather than limiting, and should be considered consistent with the teachings of this specification. Accordingly, the embodiments described herein are not limited to those explicitly introduced and described herein.

Claims

1. A method for controlling rainwater storage and discharge from elevated bridges based on water level sensing, characterized in that, An application is made to an elevated bridge rainwater storage device, the elevated bridge rainwater storage device including an elevated bridge rainwater collection component and multiple rainwater storage components, the elevated bridge rainwater collection component including multiple perforated drainage pipes, and a discharge valve is installed between the rainwater storage component and the municipal rainwater pipe, the method including: Based on the historical rainfall information of the viaduct, the connection relationship between multiple perforated drainage pipes and multiple rainwater storage components was determined; Based on the connection relationship between multiple perforated drainage pipes and multiple rainwater storage components, multiple connecting pipes are set up, and a control valve is installed on the connecting pipes. Based on the connection relationship between multiple perforated drainage pipes and multiple rainwater storage components and the historical rainfall information of the viaduct, simulated operation information of the rainwater storage components is obtained; Based on the simulated operation information of the rainwater storage components, the optimal connection topology between multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios was determined. Based on the optimal connection topology of multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios, key porous drainage pipes are identified from the multiple porous drainage pipes, and water monitoring equipment is installed on the key porous drainage pipes. Based on real-time hydrological data collected by multiple hydrological monitoring devices and the optimal connection topology of multiple perforated drainage pipes and multiple rainwater storage components under various key rainfall scenarios, the status of the scheduling valves, the operation of the rainwater storage components, and the opening degree of the discharge valves are controlled.

2. The method for controlling rainwater storage and discharge from elevated bridges based on water level sensing according to claim 1, characterized in that, Obtain historical rainfall information for the viaduct, including: Obtain the water level and flow velocity of multiple perforated drainage pipes at multiple historical precipitation time points during each historical rainfall event.

3. The method for controlling rainwater storage and discharge from elevated bridges based on water level sensing according to claim 2, characterized in that, Based on historical rainfall data of the elevated bridge, the connection relationships between multiple perforated drainage pipes and multiple rainwater storage components were determined, including: Based on the water level and flow velocity of multiple perforated drainage pipes at multiple historical precipitation time points during each historical rainfall event, multiple historical rainfall events were grouped to identify multiple key rainfall scenarios. Among them, the key rainfall scenarios include the water level and flow velocity of multiple perforated drainage pipes at multiple precipitation time points. For each key rainfall scenario, based on the water level and flow velocity of multiple perforated drainage pipes at multiple rainfall time points, the total drainage volume of each perforated drainage pipe corresponding to the key rainfall scenario and the drainage similarity of any two perforated drainage pipes corresponding to the key rainfall scenario are determined. For any two porous drainage pipes, calculate the comprehensive similarity between the two porous drainage pipes based on the drainage similarity of the two porous drainage pipes for each key rainfall scenario. Based on the comprehensive similarity and distance between any two porous drainage pipes, multiple porous drainage pipes are grouped to determine multiple porous drainage pipe groups. Among them, the comprehensive similarity between any two porous drainage pipes in a porous drainage pipe group is less than the comprehensive similarity threshold and the distance is less than the distance threshold. For each porous drain pipe assembly, the rainwater storage component connected to the porous drain pipe assembly is determined based on the total drainage volume corresponding to each key rainfall scenario for each porous drain pipe in the assembly.

4. The method for controlling rainwater storage and discharge from elevated bridges based on water level sensing according to claim 3, characterized in that, Based on the connection relationships between multiple porous drainage pipes and multiple rainwater storage components, and the historical rainfall information of the elevated bridge, simulated operational information of the rainwater storage components was obtained, including: Based on the connection relationship between multiple porous drainage pipes and multiple rainwater storage components, various connection topologies are determined; For each key rainfall scenario, the simulated operating information of the rainwater storage component in each connection topology is determined, wherein the simulated operating information includes the total water storage capacity and drainage capacity of the rainwater storage component.

5. The method for controlling rainwater storage and discharge from elevated bridges based on water level sensing according to claim 4, characterized in that, Based on simulated operational information of the rainwater storage components, the optimal connection topology between multiple porous drainage pipes and multiple rainwater storage components was determined under various key rainfall scenarios, including: Establish a multi-dimensional topological evaluation function; For each critical rainfall scenario, based on the simulated operation information of the rainwater storage component in each connection topology, the multi-dimensional topology evaluation function value of each connection topology is determined. Based on the multi-dimensional topology evaluation function value of each connection topology, the optimal connection topology of multiple porous drainage pipes and multiple rainwater storage components under the critical rainfall scenario is determined.

6. The method for controlling rainwater storage and discharge from elevated bridges based on water level sensing according to claim 4, characterized in that, Based on the optimal connection topology of multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios, key porous drainage pipes are identified from the multiple porous drainage pipes, including: For each perforated drainage pipe, the water level and flow velocity of the perforated drainage pipe at multiple precipitation time points under any two key rainfall scenarios are used to calculate the water situation similarity of the perforated drainage pipe under any two key rainfall scenarios. Calculate the topological similarity of the optimal connection topology between any two key rainfall scenarios; For each porous drainage pipe, the topological influence value of the porous drainage pipe is calculated based on the water situation similarity of the porous drainage pipe under any two key rainfall scenarios and the topological similarity of the optimal connection topology of any two key rainfall scenarios. Based on the topological influence value of each porous drain pipe, the critical porous drain pipe is identified from the multiple porous drain pipes.

7. The method for controlling rainwater storage and discharge from elevated bridges based on water level sensing according to any one of claims 1-6, characterized in that, The elevated bridge rainwater collection component also includes a fully permeable pavement set on both sides of the elevated bridge and a pebble layer set under the fully permeable pavement. A permeable geotextile is set between the fully permeable pavement and the pebble layer, and a porous drainage pipe is laid on the pebble layer. The rainwater storage component includes a distribution pool, a water storage tank, and a vacuum device connected to a connecting pipe. The water storage tank is equipped with an overflow plate, which divides the internal space of the water storage tank into a first water storage area and a second water storage area. The first water storage area is located above the distribution pool. The distribution pool is equipped with a filling area, and the first water storage area is connected to the filling area. The vacuum device is installed on the water storage tank. The first water storage area is equipped with a first water level sensor, and the second water storage area is equipped with a second water level sensor.

8. The method for controlling rainwater storage and discharge from elevated bridges based on water level sensing according to claim 1, characterized in that, Based on real-time hydrological data collected from multiple hydrological monitoring devices and the optimal connection topology of multiple perforated drainage pipes and multiple rainwater storage components under various key rainfall scenarios, the state of the scheduling valves is controlled: Based on real-time hydrological data collected by multiple hydrological monitoring devices and the optimal connection topology of multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios, the real-time optimal connection topology is determined. Based on the real-time optimal connection topology, control the status of the scheduling valves of multiple connecting pipelines.

9. The method for controlling rainwater storage and discharge from elevated bridges based on water level sensing according to claim 7, characterized in that, Based on real-time hydrological data collected from multiple hydrological monitoring devices, the system controls the operation of rainwater storage components and the opening of discharge valves, and also includes: For each rainwater storage component, based on the data collected by the first water level sensor, it is determined whether to activate the vacuum device. If so, the vacuum device is activated to adjust the internal air pressure of the storage tank. Based on the data collected by the second water level sensor, it is determined whether to activate the discharge valve. If so, the opening degree of the discharge valve is controlled based on the real-time water level data collected by multiple water level monitoring devices and the data collected by the second water level sensor.

10. A rainwater storage and discharge control system for elevated bridges based on water level sensing, characterized in that, The method for controlling the storage and discharge of rainwater from elevated bridges based on water level sensing, as described in any one of claims 1-9, comprises: The connection analysis module is used to determine the connection relationship between multiple perforated drainage pipes and multiple rainwater storage components based on the historical rainfall information of the viaduct; The pipe connection module is used to set up multiple connecting pipes according to the connection relationship between multiple perforated drainage pipes and multiple rainwater storage components. The connecting pipes are equipped with control valves. The simulation module is used to obtain simulated operational information of the rainwater storage components based on the connection relationships between multiple porous drainage pipes and multiple rainwater storage components and the historical rainfall information of the viaduct; based on the simulated operational information of the rainwater storage components, the optimal connection topology between the multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios is determined; based on the optimal connection topology between the multiple porous drainage pipes and multiple rainwater storage components under various key rainfall scenarios, key porous drainage pipes are identified from the multiple porous drainage pipes, and water monitoring equipment is installed on the key porous drainage pipes; The operation scheduling module is used to control the status of the scheduling valves, the operation of the rainwater storage components, and the opening degree of the discharge valves based on real-time water data collected by multiple water monitoring devices and the optimal connection topology of multiple perforated drainage pipes and multiple rainwater storage components under various key rainfall scenarios.

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