Six-lane expressway reconstruction and expansion full lane maintenance method and lane guidance system

Abstract

The present invention relates to a method for maintaining full lane traffic during the reconstruction and expansion of a six-lane highway and a lane guidance system, and relates to the field of reconstruction and expansion of highway traffic, including a vehicle sensor module, a data processing module, a guidance instruction terminal, and a display terminal. By rationally dividing the construction sections of the left and right road widths into construction sections, while ensuring the construction resources and investment conditions, traffic circulation guidance can be achieved, and the reconstruction and expansion construction of the two-way road surface can be completed in an orderly manner at the same time. The present invention can ensure that the six-lane highway maintains safe and smooth traffic in both directions on six lanes during the reconstruction and expansion construction period, can make full use of road resources, rationally plan emergency parking points and rescue forces, effectively improve construction efficiency, and thus efficiently complete the reconstruction and expansion project of a high-traffic highway; the lane guidance system optimizes the traffic flow speed of the reconstruction and expansion construction section in real time, further ensuring the safety and smoothness of vehicle traffic during construction.

Description

Technical Field

[0001] The present invention relates to the field of highway traffic reconstruction and expansion, and in particular to a full-lane traffic maintenance method and a lane guidance system for reconstruction and expansion of a six-lane expressway. Background Art

[0002] The reconstruction and expansion of multi-lane expressways with six or more lanes is currently just beginning in China. Reconstruction and expansion of multi-lane expressways differ significantly from new construction, primarily in that highway reconstruction and expansion typically require a three- to four-year construction period. During construction, traffic flow must be maintained on six lanes in both directions. Traffic organization plans are complex and impact every aspect of the project. Maintaining traffic flow and construction during construction are in conflict. Traffic organization and construction organization interact and are deeply intertwined in reconstruction and expansion projects, requiring compatible coordination and overall planning. Furthermore, coordinated design of various specialized areas, including roadbed, bridges, culverts, interchanges, and tunnels, is crucial to ensuring the smooth implementation of traffic organization plans and construction during the construction period. Conventional traffic organization designs for highway reconstruction and expansion projects often struggle to avoid interference between construction and traffic operations. While some success has been achieved in maintaining traffic flow, actual implementation is far from ideal. Sometimes construction needs to follow the requirements for vehicle traffic maintenance. When a certain traffic maintenance method is implemented, the planned construction process must begin to run, including traffic control, construction section adjustment, central median opening and closing, isolation, etc., which need to be repeatedly adjusted and optimized; sometimes construction needs to follow the traffic organization plan, causing construction to wait and delay the construction schedule. Summary of the Invention

[0003] Purpose of the invention: To provide a method for maintaining full lane access during the reconstruction and expansion of a six-lane expressway, and further to provide a lane guidance system applied to the method for maintaining full lane access during the reconstruction and expansion of a six-lane expressway, so as to solve the above-mentioned problems existing in the prior art.

[0004] Technical Solution: A method for maintaining full lane traffic during the reconstruction and expansion of a six-lane expressway, including the following steps:

[0005] S1. Determine the lane area to be expanded and constructed, divide the left and right sections of the expressway construction section into multiple sections, and assign staggered numbers to each section;

[0006] S2. Perform synchronous construction work on the corresponding numbered areas in the left and right sections in sequence;

[0007] S3. During the construction process, unconstructed sections will be used to maintain smooth traffic flow, and phased speed limits will be used to maintain traffic flow.

[0008] S4. The expansion construction is completed and traffic returns to normal.

[0009] In a further embodiment, the construction of the six-lane expressway expansion and reconstruction project is divided into four periods; the first period corresponds to the roadbed construction stage, and the construction content mainly includes widening the roadbed to the top surface of the roadbed; the construction and demolition of the overpass; the construction of the upper and lower structures of the newly widened bridges on both sides of the main line bridge; the second and third periods correspond to the pavement construction stage; the main construction content is to renovate the old road of the existing expressway and splice the old and new pavements; lay temporary bridge decks on new bridges in some sections, reinforce and renovate old main line bridges, and splice the old and new bridges; construction of pavement and bridge deck surface layers; reconstruction and construction of the central dividing strip; the fourth period is the construction of the entire line traffic project and ancillary facilities such as facilities along the line, opening traffic, and all lanes are open to traffic.

[0010] In a further embodiment, step S1 is to divide the left and right sections of a construction section of the highway reconstruction and expansion into eight sections, and the numbering of the left and right sections is staggered by two sections; one of the sections is arranged in the order of 1, 2, 3, and 4, and the corresponding sections of the other section are arranged in the order of 3, 4, 1, and 2; two sections are grouped together and arranged in a cyclical manner.

[0011] In a further embodiment, the construction sequence of the left and right sections in step S2 specifically includes the following steps:

[0012] During the roadbed construction phase of S201, the roadbed on both sides will be widened and new bridges and culverts will be constructed. The original road will maintain six lanes in both directions.

[0013] S202: Simultaneously construct the No. 3 working section on both the left and right sides to widen the road surface to the top of the lower layer or middle layer, flush with or nearly flush with the original road elevation. The corresponding widened bridges and culverts will be constructed simultaneously, and the original road traffic will continue to maintain six lanes in both directions.

[0014] S203: After the lower and middle surface layers of the widened section of Section 3 are completed, the pavement of Section 4 will be constructed simultaneously until the lower and middle surface layers are flush with the original road surface elevation. During this period, the bridges and culverts corresponding to the widened section of Section 3 will be completed, making it temporarily open to traffic.

[0015] S204. Once Section 4 is ready for temporary traffic, Section 1 will be closed and traffic will be diverted. Traffic from the original two-lane Section 3 will be diverted to the widened road surface, and traffic from the original two-lane Section 1 will be diverted to the original road surface of Section 1, forming a single-lane temporary two-way six-lane traffic lane. The hard shoulder width area can be used as a temporary emergency stop, and construction can begin in full swing on Section 1, including the removal of the overpass, construction of the central median piers and reconstruction of the overpass, splicing of the main line bridge superstructure, and construction of the road surface, until all construction content in Section 1 is fully completed.

[0016] S205: After the construction of Section 1 is completed, the traffic of Section 2 will be transferred to a temporary two-way six-lane road in the opposite direction, and Section 2 will be completely closed for construction;

[0017] S206: After the upper paving of Section 2 is completed, traffic will be transferred to Section 1, which has already been completed. In the early stage, the original road surface will be improved and the upper paving will be carried out in Section 3. The bridge structure will be spliced and ancillary facilities will be constructed. All the contents of the renovation and expansion of Section 3 will be completed.

[0018] S207. After the construction of Section 3 is completed, the remaining part of Section 4 will be constructed, including the improvement of the original road surface and the overall paving of the upper layer corresponding to Section 4, the splicing of the bridge structure and the construction of ancillary facilities, and the completion of all the contents of the renovation and expansion construction of Section 4.

[0019] The lane guidance system applied to the method for maintaining full lane traffic during the reconstruction and expansion of a six-lane expressway includes a vehicle sensing module, a data processing module, a guidance instruction terminal and a display terminal; the vehicle sensing module is used to record passing vehicles in different time periods, that is, to record and count the number of passing vehicles in a predetermined time period; the data processing module is used to receive relevant data recorded by the vehicle sensing module and analyze and process the received data; the guidance instruction terminal is used to receive the data analyzed and processed by the data processing module, match the corresponding instruction signal, and generate an instruction execution signal; the display terminal is used to receive the instruction execution signal generated by the guidance instruction terminal and display the corresponding instruction.

[0020] In a further embodiment, the vehicle sensor is an optical sensor, which uses a camera to record real-time video of the traffic conditions on the road to capture images, and identifies and counts the number of vehicles by processing the captured images; the vehicle sensor periodically sends the vehicle data recorded within a predetermined time period to the data processing module.

[0021] In a further embodiment, the specific analysis steps of the vehicle sensor real-time camera image capture, image processing recognition and counting are as follows:

[0022] R1. Segment the real-time video recorded by the camera into multiple frames to generate a pixel set of the original image frame. , where N represents the total number of image pixel frames, Represents the original pixel value of the I-th frame image in the set;

[0023] R2, perform noise reduction and quality enhancement processing on each image frame in the generated image frame set P, and generate a pixel set of enhanced image frames , where N represents the total number of image pixel frames, Represents the quality-enhanced pixel value of the I-th frame image in the set. The specific operating formula is as follows:

[0024]

[0025] Where Ω is the neighborhood centered at (x, y), and K is the number of pixels in the neighborhood;

[0026] R3. Input the preset target threshold T of the vehicle, compare the preset target threshold T with each enhanced pixel in the pixel set Z (x, y) of the enhanced image frame one by one, and generate a screening threshold sequence and through The target image is determined by screening the values in the image. The specific operation formula is as follows:

[0027]

[0028] Select the screening threshold sequence The enhanced image frame corresponding to the value of 1 is the target image frame, which is tracked and recorded to obtain the corresponding number of vehicles passing f.

[0029] In a further embodiment, the data processing module performs data analysis and processing after receiving the relevant data recorded by the vehicle sensor module. The specific analysis and processing steps are as follows:

[0030] T1. Determine the vehicle congestion coefficient Y during the recording period of the vehicle sensor module. The specific processing formula is as follows:

[0031]

[0032] Where f is the number of vehicles passing during the recording period, w is the lane width of the open lane in the maintained access section, l is the lane length of the maintained access section, and s is the number of lanes in the maintained access section;

[0033] T2. When the calculated Y value is greater than 1, smooth traffic flow is ensured in the road section, and speed limit regulation is not required. When the calculated Y value is less than or equal to 1, there is a risk of traffic congestion, and timely speed limit regulation is required for passing vehicles.

[0034] T3. When speed limit regulation is required, the maximum allowed vehicle speed d is calculated based on the obtained vehicle congestion coefficient Y, and then the vehicle speed limit regulation is implemented. The specific analysis formula is as follows:

[0035]

[0036] Where f is the number of vehicles passing during the recording period, v is the median value of the vehicle speed allowed under normal traffic conditions in the maintained section, l is the lane length of the maintained section, and Y is the vehicle congestion coefficient.

[0037] In a further embodiment, after determining the maximum allowed vehicle speed, corresponding data information is generated and transmitted to the guidance instruction terminal. After receiving the corresponding data information, the guidance instruction terminal matches and generates a corresponding speed limit instruction, and sends the execution signal and the speed limit instruction synchronously to the display terminal, which displays the speed limit instruction.

[0038] In a further embodiment, the display terminal is provided with a display screen of a predetermined operation size, which can generate and display corresponding instructions.

[0039] Beneficial effects: The present invention relates to a method for maintaining full lane traffic during the reconstruction and expansion of a six-lane highway and a lane guidance system, which relates to the field of reconstruction and expansion of highway traffic, and includes a vehicle sensing module, a data processing module, a guidance instruction terminal, and a display terminal. By rationally dividing the construction sections of the left and right road widths into construction sections, while ensuring the construction resources and investment conditions, traffic circulation guidance can be achieved, and the reconstruction and expansion construction of the two-way road surface can be completed in an orderly manner at the same time. The present invention can ensure that the six-lane highway maintains safe and smooth traffic in both directions on six lanes during the reconstruction and expansion construction, and rationally plans emergency parking points and rescue forces by making full use of road resources. At the same time, it can effectively improve construction efficiency and progress, thereby efficiently completing the reconstruction and expansion project of a high-traffic highway. The lane guidance system can also optimize and adjust the vehicle speed of the reconstruction and expansion construction section in real time, further ensuring the safety and smoothness of lane vehicle traffic during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of traffic organization during the roadbed widening stage of the present invention.

[0041] Figure 2 The left and right schematic diagrams are of the construction section of the present invention.

[0042] Figure 3 This is a construction diagram of Section 3 of the present invention.

[0043] Figure 4 This is a construction diagram of Section 4 of the present invention.

[0044] Figure 5 In order to divert traffic for the present invention, Section 1 is closed for construction, and a schematic diagram of the construction of a single-lane two-way six-lane road in the opposite direction is shown.

[0045] Figure 6 In order to divert traffic for the present invention, Section 2 is closed for construction, and a schematic diagram of the construction of a single-lane two-way four-lane road in the opposite direction is shown.

[0046] Figure 7In order to divert traffic for the present invention, Section 3 is closed for construction, and a schematic diagram of the construction of a single-lane two-way four-lane road in the opposite direction is shown.

[0047] Figure 8 In order to divert traffic for the present invention, Section 4 is closed for construction, and a schematic diagram of the construction of a single-lane, two-way, four-lane road in the opposite direction is shown.

[0048] Figure 9 The construction of the present invention is completed and the traffic flow diagram of the entire lane is opened.

[0049] Figure 10 This is a schematic diagram of step 1 of the bridge widening traffic organization process according to the present invention.

[0050] Figure 11 This is a schematic diagram of step 2 of the bridge widening traffic organization process according to the present invention.

[0051] Figure 12 This is a schematic diagram of step 3 of the bridge widening traffic organization process according to the present invention.

[0052] Figure 13 This is another schematic diagram of step 3 of the bridge widening traffic organization according to the present invention. DETAILED DESCRIPTION

[0053] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without one or more of these details. In other instances, certain technical features well known in the art are not described to avoid confusion with the present invention.

[0054] The applicant believes that conventional traffic organization designs during highway expansion and reconstruction projects often struggle to avoid interference between construction and traffic operations. While some degree of traffic flow is maintained, actual implementation is far from ideal. Sometimes, construction must be conducted in accordance with vehicle traffic flow requirements. Once a particular traffic flow maintenance method is implemented, the planned construction process must begin, including traffic control, construction section adjustments, median openings and closings, and isolation measures, which require repeated adjustments and optimization. Sometimes, construction must follow the traffic organization plan, resulting in delays and delays in the construction schedule.

[0055] To this end, the applicant designed a method and lane guidance system for maintaining full lane access during the six-lane highway reconstruction and expansion project. This method fully utilizes road resources and rationally plans emergency stops and rescue resources. This method also effectively improves construction efficiency and progress, allowing for the efficient completion of the high-traffic highway reconstruction and expansion project. The lane guidance system also optimizes and adjusts vehicle speeds in real time along the reconstruction and expansion construction section, further ensuring safe and smooth traffic during construction.

[0056] The present invention relates to a method for maintaining full lane access during the reconstruction and expansion of a six-lane highway and a lane guidance system, comprising the following steps:

[0057] S1. Determine the lane area to be expanded and constructed, divide the left and right sections of the expressway construction section into multiple sections, and assign staggered numbers to each section;

[0058] S2. Perform synchronous construction work on the corresponding numbered areas in the left and right sections in sequence;

[0059] S3. During the construction process, unconstructed sections will be used to maintain smooth traffic flow, and phased speed limits will be used to maintain traffic flow.

[0060] S4. The expansion construction is completed and traffic returns to normal.

[0061] The construction of the six-lane expressway expansion and reconstruction project is divided into four periods; the first period corresponds to the roadbed construction stage, and the construction content mainly involves widening the roadbed to the top surface of the roadbed; the construction and demolition of overpasses; the construction of the upper and lower structures of the newly widened bridges on both sides of the main line bridge; the second and third periods correspond to the pavement construction stage; the main construction content is to renovate the old road of the existing expressway and splice the old and new pavements; lay temporary bridge decks on new bridges in some sections, reinforce and renovate old main line bridges, and splice the old and new bridges; pavement and bridge deck surface construction; central median reconstruction construction; the fourth period is the construction of traffic projects along the entire line and ancillary facilities such as facilities along the line, open traffic, and all lanes are open to traffic.

[0062] In a further preferred embodiment, the present invention is mainly applicable to the reconstruction and expansion project of a six-lane highway with double-sided widening. By distributing and sorting out the structures along the highway and rationally dividing the construction sections, a phased six-lane traffic organization plan is implemented, and road traffic is adjusted at different times, as shown in the following table:

[0063] Table 1 Traffic conditions of roads during different traffic organization periods

[0064]

[0065] The first period (estimated to be 12 months): corresponds to the roadbed construction stage, and the construction content mainly includes widening the roadbed to the top surface of the roadbed; construction and demolition of overpasses; and construction of the upper and lower structures of the newly widened bridges on both sides of the main line bridge.

[0066] The main objectives of traffic organization at this stage are:

[0067] ① As the widening of the roadbed has almost no impact on the main line traffic operation, the original speed limit will be basically maintained for large and small vehicles during the construction period. Due to construction needs, the speed limit at some work sites can be appropriately reduced to 80km / h. The speed limit can be further limited to 60km / h on some sections with restricted conditions without diversion.

[0068] ② The construction and demolition of overpasses will be carried out in accordance with the principle of ensuring safety, and the six-lane bidirectional traffic will be maintained as much as possible. During this phase, some sections of the road will be closed to traffic for a short period of time.

[0069] The second and third phases (approximately 16 months in total) correspond to the pavement construction phase. The main construction content includes the reconstruction of the existing expressway and the splicing of the old and new pavement; the laying of temporary bridge decks on some new bridges; the reinforcement and reconstruction of existing mainline bridges and the splicing of the new and old bridges; the construction of pavement and bridge deck surfaces; and the reconstruction of the central median.

[0070] The main objectives of traffic organization during this period are:

[0071] ① Traffic transfer maintains six lanes in both directions. Since the splicing of the roadbed and pavement on some sections requires the use of the emergency lane of the old road, the six lanes will be maintained in both directions while ensuring that there is at least 0.5 meters of lateral width for vehicles.

[0072] The main goal of traffic organization at this stage is to ensure traffic safety and orderly construction under the conditions of two-way six-lane traffic.

[0073] ② After the paving of the roadbed and pavement surface layer in a construction section is completed, the signs and markings will be reset to prepare for the next stage of traffic transfer to the two-way six-lane section.

[0074] The fourth period (8 months in total): Construction of the entire line's traffic engineering and ancillary facilities such as facilities along the line will be carried out, traffic will be open, and all lanes in both directions will be open to traffic.

[0075] In step S1, the left and right sections of a construction bid section of the highway expansion and reconstruction are divided into eight sections, and the numbering of the left and right sections is staggered by two sections; one section is arranged in the order of 1, 2, 3, and 4, and the corresponding sections of the other section are arranged in the order of 3, 4, 1, and 2; two sections are grouped together and arranged in a cyclical manner.

[0076] The construction sequence of the left and right sections in step S2 specifically includes the following steps:

[0077] During the roadbed construction phase of S201, the roadbed on both sides will be widened and new bridges and culverts will be constructed. The original road will maintain six lanes in both directions.

[0078] S202: Simultaneously construct the No. 3 working section on both the left and right sides to widen the road surface to the top of the lower layer or middle layer, flush with or nearly flush with the original road elevation. The corresponding widened bridges and culverts will be constructed simultaneously, and the original road traffic will continue to maintain six lanes in both directions.

[0079] S203: After the lower and middle surface layers of the widened section of Section 3 are completed, the pavement of Section 4 will be constructed simultaneously until the lower and middle surface layers are flush with the original road surface elevation. During this period, the bridges and culverts corresponding to the widened section of Section 3 will be completed, making it temporarily open to traffic.

[0080] S204. Once Section 4 is ready for temporary traffic, Section 1 will be closed and traffic will be diverted. Traffic from the original two-lane Section 3 will be diverted to the widened road surface, and traffic from the original two-lane Section 1 will be diverted to the original road surface of Section 1, forming a single-lane temporary two-way six-lane traffic lane. The hard shoulder width area can be used as a temporary emergency stop, and construction can begin in full swing on Section 1, including the removal of the overpass, construction of the central median piers and reconstruction of the overpass, splicing of the main line bridge superstructure, and construction of the road surface, until all construction content in Section 1 is fully completed.

[0081] S205: After the construction of Section 1 is completed, the traffic of Section 2 will be transferred to a temporary two-way four-lane road in the opposite direction, and Section 2 will be completely closed for construction;

[0082] S206: After the upper paving of Section 2 is completed, traffic will be transferred to Section 1, which has already been completed. In the early stage, the original road surface will be improved and the upper paving will be carried out in Section 3. The bridge structure will be spliced and ancillary facilities will be constructed. All the contents of the renovation and expansion of Section 3 will be completed.

[0083] S207. After the construction of Section 3 is completed, the remaining part of Section 4 will be constructed, including the improvement of the original road surface and the overall paving of the upper layer corresponding to Section 4, the splicing of the bridge structure and the construction of ancillary facilities, and the completion of all the contents of the renovation and expansion construction of Section 4.

[0084] In a further preferred embodiment, for further elaboration and explanation, the maintenance of roadbed and pavement during the construction period of reconstruction and expansion is taken as the research object, and the specific steps are as follows:

[0085] Step A1:

[0086] During the roadbed construction phase, the roadbed on both sides will be widened and the new bridges and culverts will be constructed. The original road will maintain six lanes in both directions. The traffic organization at this stage is as follows: Figure 1 shown.

[0087] Step A2:

[0088] During the pavement construction phase, the left and right sections of a construction bid section of the expanded expressway are divided into 8 sections. To facilitate the alternating traffic between the left and right sections, the numbering of the left and right sections is staggered by two sections. One section is arranged in the order of 1, 2, 3, 4, and the corresponding sections of the other section are arranged in the order of 3, 4, 1, 2. Two sections are grouped together and arranged in a cyclical manner. The specific situation of the section arrangement is as follows: Figure 2 shown.

[0089] Step A3:

[0090] First, the No. 3 working section on both sides will be constructed simultaneously to widen the road surface to the top of the lower layer or middle layer, flush with or nearly flush with the original road elevation. The corresponding widened bridges and culverts will be constructed simultaneously. The original road traffic will still maintain two-way six-lane traffic. The traffic organization plan for this stage is as follows: Figure 3 shown.

[0091] Step A4:

[0092] After the construction of the lower and middle surface layers of the widened section of Section 3 is completed in advance, the road surface of Section 4 will be constructed simultaneously until the lower and middle surface layers are flush with the original road surface elevation. During this period, the bridge and culvert (temporary road surface) corresponding to the widened section of Section 3 will also be completed, and the conditions for temporary traffic will be met. The traffic organization plan for this stage is as follows: Figure 4 shown.

[0093] Step A5:

[0094] When Section 4 is ready for temporary traffic, Section 1 will be closed and traffic will be diverted. Traffic on the two lanes of Section 3 will be diverted to the widened road surface, and traffic on the two lanes of Section 1 will be diverted to the original road surface of Section 1, forming a single-lane temporary two-way six-lane traffic. The hard shoulder width area can be used as a temporary emergency parking point, and construction can be fully carried out on Section 1, including the demolition of the overpass, construction of the central median piers and reconstruction of the overpass, splicing of the main line bridge superstructure, road surface construction, etc., until all construction content of Section 1 is fully completed. The traffic organization plan for this stage is as follows: Figure 5 shown.

[0095] Step A6:

[0096] After the construction of Section 1 is completed, the traffic of Section 2 will be transferred to a temporary two-way four-lane road in the opposite direction, and Section 2 will be closed for construction. The traffic organization plan for this stage is as follows: Figure 6 shown.

[0097] Step A7:

[0098] After the paving of the upper layer of Section 2 is completed, traffic will be transferred to Section 1, which has already been completed. In the early stage, the original road surface of Section 3 will be improved and the upper layer will be paved as a whole. The bridge structure will be spliced and the auxiliary facilities will be constructed. All the contents of the reconstruction and expansion of Section 3 will be completed. The construction and traffic organization plan for this stage is as follows: Figure 7 shown.

[0099] Step A8:

[0100] After the construction of Section 3 is completed, the remaining part of Section 4 will be constructed, and the original road surface renovation and upper layer paving, bridge structure splicing and auxiliary facilities construction corresponding to Section 4 will be completed, and all the contents of the reconstruction and expansion construction of Section 4 will be completed. The traffic organization plan for this stage is as follows: Figure 8 shown.

[0101] After the construction of Section 4 is completed, the reconstruction and expansion of the entire line will be basically completed, and the project will be expanded into a two-way ten-lane expressway and open to traffic. The traffic organization plan for this stage is as follows Figure 9 shown.

[0102] The method for maintaining full lane accessibility and the lane guidance system used in the six-lane highway reconstruction and expansion project include a vehicle sensing module, a data processing module, a guidance instruction terminal, and a display terminal; the vehicle sensing module is used to record passing vehicles in different time periods, that is, to record and count the number of passing vehicles in a predetermined time period; the data processing module is used to receive relevant data recorded by the vehicle sensing module and analyze and process the received data; the guidance instruction terminal is used to receive the data analyzed and processed by the data processing module, match the corresponding instruction signal, and generate an instruction execution signal; the display terminal is used to receive the instruction execution signal generated by the guidance instruction terminal and display the corresponding instruction.

[0103] The vehicle sensor is an optical sensor that uses a camera to record real-time video of road traffic conditions to capture images, and identifies and counts the number of vehicles by processing the captured images; the vehicle sensor periodically sends the vehicle data recorded within a predetermined period to the data processing module.

[0104] In a further preferred embodiment, considering that the construction, renovation and expansion work is on a two-way lane, the traffic guidance systems described in this application are multiple, and are placed in different directions and positions of the two-way lane. The two-way vehicles can be monitored and processed synchronously, and data analysis can be performed separately, so that the two-way lanes can flexibly adjust the speed limit according to actual conditions, avoiding the problem of low vehicle traffic efficiency during the construction process.

[0105] The specific analysis steps for the real-time camera image capture, image processing, recognition and counting of the vehicle sensor are as follows:

[0106] R1. Segment the real-time video recorded by the camera into multiple frames to generate a pixel set of the original image frame. , where N represents the total number of image pixel frames, Represents the original pixel value of the I-th frame image in the set;

[0107] R2, perform noise reduction and quality enhancement processing on each image frame in the generated image frame set P, and generate a pixel set of enhanced image frames , where N represents the total number of image pixel frames, Represents the quality-enhanced pixel value of the I-th frame image in the set. The specific operating formula is as follows:

[0108]

[0109] Where Ω is the neighborhood centered at (x, y), and K is the number of pixels in the neighborhood;

[0110] R3. Input the preset target threshold T of the vehicle, compare the preset target threshold T with each enhanced pixel in the pixel set Z (x, y) of the enhanced image frame one by one, and generate a screening threshold sequence and through The target image is determined by screening the values in the image. The specific operation formula is as follows:

[0111]

[0112] Select the screening threshold sequence The enhanced image frame corresponding to the value of 1 is the target image frame, which is tracked and recorded to obtain the corresponding number of vehicles passing f.

[0113] After receiving the relevant data recorded by the vehicle sensor module, the data processing module performs data analysis and processing. The specific analysis and processing steps are as follows:

[0114] T1. Determine the vehicle congestion coefficient Y during the recording period of the vehicle sensor module. The specific processing formula is as follows:

[0115]

[0116] Where f is the number of vehicles passing during the recording period, w is the lane width of the lane open in the construction section, l is the lane length of the construction section, and s is the number of lanes in the construction section;

[0117] T2. When the calculated Y value is greater than 1, traffic on the construction section can be kept smooth and no speed limit is required. When the calculated Y value is less than or equal to 1, there is a risk of traffic congestion and speed limit regulation is required for passing vehicles.

[0118] T3. When speed limit regulation is required, the maximum allowed vehicle speed d is calculated based on the obtained vehicle congestion coefficient Y, and then the vehicle speed limit regulation is implemented. The specific analysis formula is as follows:

[0119]

[0120] Where f is the number of vehicles passing during the recording period, v is the median value of the vehicle speed allowed under normal traffic conditions on the construction section, l is the lane length of the construction section, and Y is the vehicle congestion coefficient.

[0121] After determining the maximum allowed vehicle speed, corresponding data information is generated and transmitted to the guidance instruction terminal. After receiving the corresponding data information, the guidance instruction terminal matches and generates a corresponding speed limit instruction, and sends the execution signal and the speed limit instruction synchronously to the display terminal, which displays the speed limit instruction.

[0122] The display terminal is equipped with a display screen of a predetermined size, capable of generating and displaying corresponding instructions. The display screen of the display terminal can be located at various locations along the road under construction or expansion, as long as it does not interfere with construction or traffic and provides a certain level of guidance. The vehicle sensing module, data processing module, and guidance terminal can be integrated with the display screen of the display terminal. The vehicle sensing module can also be installed separately to facilitate data collection.

[0123] Secondly, through multi-level sequential traffic organization and modification, consideration is given to better coordinating the main line bridges and other structures within the section to ensure traffic flow.

[0124] Step 1:

[0125] Corresponding to the first and second phases of roadbed and pavement construction, while the roadbed on both sides of the expansion section is being filled to the top of the roadbed and the pavement on both sides is being built to the top of the flexible base, new bridges will be built on both sides of the bridge simultaneously, cast-in-place leveling layers will be laid, and temporary isolation guardrails will be installed. The traffic organization plan for this phase is as follows: Figure 10 shown.

[0126] It is particularly important to note that this step requires addressing two issues: differential foundation settlement and concrete shrinkage and creep. This requires a waiting period (approximately six months) before the widened structure can be joined to the original bridge. During this period, a gap remains between the two, allowing them to bear independent loads. This solution, within subgrade and pavement steps A1 and A2, allows sufficient time for the widened structure to settle and shrink, creating the necessary conditions for joining and widening the bridge.

[0127] Step 2:

[0128] Corresponding to the third period of roadbed construction, the roadbed is constructed on one side in sections. At the same time, the bridge will simultaneously divert the left lane (or right lane) traffic flow to the right lane (or left lane), splicing the new and old bridges on the left lane (or right lane). The traffic organization plan for this stage is as follows: Figure 11 shown.

[0129] Step 3:

[0130] During the fourth period of roadbed construction, the roadbed will be constructed on one side of the roadbed, and traffic will be transferred to the other side. Construction step 3 will be repeated to connect the new and old bridges on the other side. The traffic organization plan for this stage is as follows: Figure 12-13 shown.

[0131] After the splicing is completed, the temporary guardrails are removed and the bridge construction is completed.

[0132] Again, through multi-level sequential traffic organization plans, traffic organization emergency plans can be well planned.

[0133] While formulating the overall traffic organization plan, detailed plans were made for traffic maintenance, rescue and equipment in each construction area for road section traffic conversion, and police force and facility equipment were adjusted in real time as the overall traffic organization plan section conversion cycle progressed.

[0134] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A method for maintaining full lane traffic during the reconstruction and expansion of a six-lane expressway, characterized in that: The following steps are included: S1. Determine the lane area to be expanded and constructed, divide the left and right sections of the expressway construction section into multiple sections, and assign staggered numbers to each section; S2. Perform synchronous construction work on the corresponding numbered areas in the left and right sections in sequence; S3. During the construction process, unconstructed sections will be used to maintain smooth traffic flow, and phased speed limits will be used to maintain traffic flow. S4. Expansion construction is completed and traffic returns to normal: The construction of the six-lane expressway expansion project is divided into four phases; The first period corresponds to the roadbed construction phase, which mainly involves widening the roadbed to the top surface; building and demolishing overpasses; and constructing the upper and lower structures of newly widened bridges on both sides of the main line bridge. The second and third periods correspond to the pavement construction phase; the main construction content includes the reconstruction of the existing expressway and the splicing of the old and new pavement; the laying of temporary bridge decks for new bridges in some sections, the reinforcement and reconstruction of old mainline bridges, and the splicing of new and old bridges; the construction of pavement and bridge deck surface layers; and the reconstruction of the central median strip. During the fourth period, all traffic projects and ancillary facilities along the entire line will be under construction, and all lanes will be open to traffic; In step S1, the left and right sections of a construction bid section of the highway expansion and reconstruction are divided into eight sections, and the numbering of the left and right sections is staggered by two sections; one section is arranged in the order of 1, 2, 3, and 4, and the corresponding sections of the other section are arranged in the order of 3, 4, 1, and 2; two sections are grouped together and arranged in a cyclical manner.

2. The method for maintaining full lane traffic during the reconstruction and expansion of a six-lane expressway according to claim 1, characterized in that: The construction sequence of the left and right sections in step S2 specifically includes the following steps: During the roadbed construction phase of S201, the roadbed on both sides will be widened and new bridges and culverts will be constructed. The original road will maintain six lanes in both directions. S202: Simultaneously construct the No. 3 working section on both the left and right sides to widen the road surface to the top of the lower layer or middle layer, flush with or nearly flush with the original road elevation. The corresponding widened bridges and culverts will be constructed simultaneously, and the original road traffic will continue to maintain six lanes in both directions. S203: After the lower and middle surface layers of the widened section of Section 3 are completed, the pavement of Section 4 will be constructed simultaneously until the lower and middle surface layers are flush with the original road surface elevation. During this period, the bridges and culverts corresponding to the widened section of Section 3 will be completed, making it temporarily open to traffic. S204. Once Section 4 is ready for temporary traffic, Section 1 will be closed and traffic will be diverted. Traffic from the original two-lane Section 3 will be diverted to the widened road surface, and traffic from the original two-lane Section 1 will be diverted to the original road surface of Section 1, forming a single-lane temporary two-way six-lane traffic lane. The hard shoulder width area can be used as a temporary emergency stop, and construction can begin in full swing on Section 1, including the removal of the overpass, construction of the central median piers and reconstruction of the overpass, splicing of the main line bridge superstructure, and construction of the road surface, until all construction content in Section 1 is fully completed. S205: After the construction of Section 1 is completed, the traffic of Section 2 will be transferred to a temporary two-way six-lane road in the opposite direction, and Section 2 will be completely closed for construction; S206: After the upper paving of Section 2 is completed, traffic will be transferred to Section 1, which has already been completed. In the early stage, the original road surface will be improved and the upper paving will be carried out in Section 3. The bridge structure will be spliced and ancillary facilities will be constructed. All the contents of the renovation and expansion of Section 3 will be completed. S207. After the construction of Section 3 is completed, the remaining part of Section 4 will be constructed, including the improvement of the original road surface and the overall paving of the upper layer corresponding to Section 4, the splicing of the bridge structure and the construction of ancillary facilities, and the completion of all the contents of the renovation and expansion construction of Section 4.

3. A vehicle guidance system for a six-lane highway reconstruction and expansion method for maintaining full lane traffic according to any one of claims 1 to 2, characterized in that: It includes vehicle sensor module, data processing module, guidance instruction terminal and display terminal; The vehicle sensing module is used to record the number of vehicles passing through in different time periods, that is, to record and count the number of vehicles passing through in a predetermined time period; The data processing module is used to receive the relevant data recorded by the vehicle sensor module and analyze and process the received data; The guidance instruction terminal is used to receive the data analyzed and processed by the data processing module, match the corresponding instruction signal, and generate an instruction execution signal; The display terminal is used to receive the instruction execution signal generated by the guidance instruction terminal and perform corresponding instruction display.

4. A vehicle guidance system according to claim 3, characterized in that: The vehicle sensor is an optical sensor that uses a camera to record real-time images of vehicles passing on the road, and identifies and counts the number of vehicles by processing the captured images; The vehicle sensor periodically sends the vehicle data recorded within a predetermined period to the data processing module.

5. The vehicle guidance system according to claim 4, characterized in that: The specific analysis steps for the real-time camera image capture, image processing, recognition and counting of the vehicle sensor are as follows: R1, perform video segmentation on the real-time video recorded by the camera, divide the video into multiple frames, and generate the pixel set P(i,j)={p1(i,j),p2(i,j),…,p I (i,j),…p N (i, j)}, where N represents the total number of image pixel frames, p I Represents the original pixel value of the I-th frame image in the set; R2, perform noise reduction and quality enhancement processing on each image frame in the generated image frame set P, and generate a pixel set Z(x,y)={z1(x,y),z2(x,y),…,z I (x,y),…,z N (x,y)}, where N represents the total number of image pixel frames, z I Represents the quality-enhanced pixel value of the I-th frame image in the set. The specific operating formula is as follows: Where Ω is the neighborhood centered at (x, y), and K is the number of pixels in the neighborhood; R3. Input the preset target threshold T of the vehicle. Compare the preset target threshold T with each enhanced pixel in the pixel set Z(x, y) of the enhanced image frame one by one to generate a screening threshold sequence Z′(x, y). Then, the target image is determined by screening each value in Z′(x, y). The specific operation formula is as follows: The enhanced image frame corresponding to the value 1 in the screening threshold sequence Z′(x,y) is selected as the target image frame, and the tracking record is performed to obtain the corresponding number of vehicles passing f.

6. The vehicle guidance system according to claim 5, characterized in that: After receiving the relevant data recorded by the vehicle sensor module, the data processing module performs data analysis and processing. The specific analysis and processing steps are as follows: T1. Determine the vehicle congestion coefficient Y during the recording period of the vehicle sensor module. The specific processing formula is as follows: Where f is the number of vehicles passing during the recording period, w is the lane width of the lane open in the construction section, l is the lane length of the maintained section, and s is the number of lanes in the maintained section; T2. When the calculated Y value is greater than 1, smooth traffic flow in the road section can be ensured, and speed limit regulation is not required; When the calculated Y value is less than or equal to 1, there is a risk of traffic congestion and it is necessary to promptly limit the speed of passing vehicles; T3. When speed limit regulation is required, the maximum allowed vehicle speed d is calculated based on the obtained vehicle congestion coefficient Y, and then the vehicle speed limit regulation is implemented. The specific analysis formula is as follows: Where f is the number of vehicles passing during the recording period, v is the median value of the vehicle speed allowed under normal traffic conditions in the maintenance section, l is the lane length of the construction section, and Y is the vehicle congestion coefficient.

7. The vehicle guidance system according to claim 6, characterized in that: After determining the maximum allowed vehicle speed, corresponding data information is generated and transmitted to the guidance instruction terminal. After receiving the corresponding data information, the guidance instruction terminal matches and generates a corresponding speed limit instruction, and sends the execution signal and the speed limit instruction synchronously to the display terminal, which displays the speed limit instruction.

8. The vehicle guidance system according to claim 3, characterized in that: The display terminal is provided with a display screen of a predetermined operation size, which can generate and display corresponding instructions.

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