Six-lane expressway reconstruction and expansion full-lane traffic keeping method and lane guiding system

Abstract

The invention relates to a six-lane highway reconstruction and expansion full-lane traffic keeping method and a lane guiding system, and relates to the field of highway traffic reconstruction and expansion, and the system comprises a vehicle sensing module, a data processing module, a guiding instruction terminal and a display terminal. The construction sections of the left road width and the right road width are reasonably divided into construction sections, under the condition that construction resources and investment are guaranteed, traffic circulation guide and modification can be achieved, and meanwhile reconstruction and expansion construction of the two-way road surface can be orderly completed. According to the method, it can be guaranteed that safe and smooth two-way traffic of six lanes can be maintained in the reconstruction and extension construction period of the six-lane expressway, road surface resources can be fully utilized, emergency parking points and rescue force can be reasonably planned, the construction efficiency is effectively improved, and therefore the reconstruction and extension project of the large-flow expressway is efficiently completed; the traffic flow speed of the reconstruction and extension construction road section is optimized in real time through the lane guiding system, and safety and smoothness of vehicle passing in the construction period are further guaranteed.

Description

Technical Field

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

[0002] At present, the reconstruction and expansion of multi-lane expressways with six lanes or more has just started in China. The reconstruction and expansion of multi-lane expressways is significantly different from the construction of new expressways. The main manifestation is that the construction of expressway reconstruction and expansion usually takes 3-4 years of construction period. During the construction of the reconstruction and expansion of expressways, it is also necessary to ensure that the traffic flow carried by the expressway is still maintained in two-way six lanes. The traffic organization plan is complex and is related to all aspects of the project construction. During the construction period, maintaining traffic and construction are contradictory. Traffic organization and construction organization influence each other and are deeply bound in the reconstruction and expansion construction. The two need to be compatible, coordinated and coordinated. At the same time, the professional design of roadbed, bridges, culverts, interchanges, tunnels, etc. must be coordinated to ensure the smooth implementation of traffic organization plans and construction during the construction period. It is difficult to avoid the interference between construction and traffic operation in the traffic organization design during the reconstruction and expansion of conventional projects. Although there is a certain effect of maintaining traffic, the actual operation cannot reach the ideal. Sometimes construction needs to follow the requirements for vehicle traffic maintenance. When a certain method of traffic maintenance is implemented, the planned construction procedures must begin to run, including traffic control, construction section adjustment, central median opening and closure, isolation, etc., which require repeated adjustment and optimization; sometimes construction needs to follow the traffic organization plan, which causes construction waiting and delays 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, comprising the following steps: S1. Determine the lane area to be expanded and constructed, divide the left and right sections of the construction section of the expanded and rebuilt expressway into multiple sections, and number each section in a staggered manner; S2. Perform synchronous construction work on the corresponding numbered areas in the left and right sections in sequence; S3. During the construction process, the unconstructed sections are used to maintain the smooth flow of traffic, and the speed limit is adopted in stages to ensure smooth traffic. S4. The expansion construction is completed and traffic returns to normal.

[0005] 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; pavement and bridge deck surface construction; central dividing strip reconstruction construction; the fourth period is the construction of the entire line traffic project and ancillary facilities such as facilities along the line, open traffic, and all lanes are open to traffic.

[0006] In a further embodiment, step S1 divides the left and right sections of a construction section of the expanded and rebuilt expressway 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, 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.

[0007] In a further embodiment, the construction sequence of the left and right sections in step S2 specifically includes the following steps: S201, during the roadbed construction phase, the roadbed of the widened parts on both sides and the construction of the new bridge and culvert structures will be completed, and the original road will maintain two-way six-lane traffic; S202: Simultaneously construct the No. 3 working section on the left and right sides to widen the road surface to the top surface of the lower layer or the middle layer, flush with or nearly flush with the original road elevation. The corresponding widened bridges and culverts are constructed simultaneously, and the original road traffic still maintains two-way six-lane traffic; S203: After the lower middle surface layer of the widened section of Section 3 is constructed in advance, the pavement of Section 4 will be constructed simultaneously until the lower middle surface layer is flush with the original road surface elevation. During this period, the bridge and culvert construction of the widened section corresponding to Section 3 will be completed, and the conditions for temporary opening to traffic will be met; S204. When Section 4 is ready for temporary traffic, Section 1 will be closed and traffic will be diverted. The traffic on the two lanes of Section 3 will be diverted to the widened road surface, and the 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 removal of the overpass, the construction of the central median pier and the reconstruction of the overpass, the splicing of the main line bridge superstructure, the construction of the road surface, etc., until all the construction contents of Section 1 are 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 closed for construction; S206, after the paving of the upper layer of Section 2 is completed, the traffic will be transferred to Section 1 which has been completed. The original road surface will be improved and the upper layer will be paved as a whole in the early stage of Section 3, and the bridge structure will be spliced ​​and the auxiliary facilities will be constructed, completing all the contents of the reconstruction and expansion of Section 3; S207. After the construction of Section 3 is completed, the remaining part of Section 4 will be constructed. The original road surface improvement and the overall paving of the upper layer corresponding to Section 4, the bridge structure splicing and the construction of ancillary facilities will be completed, and all contents of the reconstruction and expansion construction of Section 4 will be completed.

[0008] The lane guidance system applied to the method for maintaining full lane traffic during the reconstruction and expansion of a six-lane expressway comprises 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 to analyze and process the received data; the guidance instruction terminal is used to receive the data analyzed and processed by the data processing module, and to match corresponding instruction signals to generate instruction execution signals; the display terminal is used to receive the instruction execution signals generated by the guidance instruction terminal, and to display corresponding instructions.

[0009] In a further embodiment, the vehicle sensor is an optical sensor, which uses a camera to capture images of vehicle traffic on the road in real time, 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.

[0010] 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: 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; R2, perform noise reduction and quality enhancement processing on each image frame in the generated image frame set P frame by frame to 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:

[0011] 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, 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:

[0012] 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 vehicle passing f.

[0013] 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: T1. Determine the vehicle congestion coefficient Y within the recording period of the vehicle sensor module. The specific processing formula is as follows:

[0014] Where f is the number of vehicles passing during the recording period, w is the lane width of the open lane in the road-keeping section, l is the lane length of the road-keeping section, and s is the number of lanes in the road-keeping section; T2. When the calculated Y value is greater than 1, the traffic in the road section can be ensured to be smooth, and there is no need for speed limit regulation; when the calculated Y value is less than or equal to 1, there is a risk of traffic jam, and it is necessary to carry out speed limit regulation on passing vehicles in a timely manner; 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:

[0015] 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 guaranteed passage section, l is the lane length of the guaranteed passage section, and Y is the vehicle congestion coefficient.

[0016] 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.

[0017] 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.

[0018] 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, including a vehicle sensor module, a data processing module, a guidance instruction terminal and a display terminal. By reasonably dividing the construction sections of the left and right road widths into construction sections, the traffic circulation guidance can be realized while ensuring the construction resources and investment conditions, 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 with six lanes during the reconstruction and expansion construction, and reasonably 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-volume 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

[0019] Figure 1 This is a schematic diagram of traffic organization during the roadbed widening stage of the present invention.

[0020] Figure 2 The left and right schematic diagrams are of the construction section of the present invention.

[0021] Figure 3 This is a schematic diagram of the construction of Section 3 of the present invention.

[0022] Figure 4 This is a schematic diagram of the construction of Section 4 of the present invention.

[0023] Figure 5 In order to divert traffic in 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.

[0024] Figure 6 In order to divert traffic in 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.

[0025] Figure 7 In order to divert traffic in 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.

[0026] Figure 8 In order to divert traffic in 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.

[0027] Fig. 9 The construction of the present invention is completed and the traffic flow diagram of the entire lane is opened.

[0028] Fig.10This is a schematic diagram of step 1 of the bridge widening traffic organization process of the present invention.

[0029] Fig.11 This is a schematic diagram of step 2 of the bridge widening traffic organization process of the present invention.

[0030] Fig.12 This is a schematic diagram of step 3 of the bridge widening traffic organization of the present invention.

[0031] Fig.13 This is another schematic diagram of step 3 of the bridge widening traffic organization of the present invention. DETAILED DESCRIPTION

[0032] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0033] The applicant believes that it is difficult to avoid the interference between construction and traffic operation in the traffic organization design during the reconstruction and expansion of conventional highway projects. Although there is a certain effect of maintaining traffic, the actual operation cannot reach the ideal. Sometimes the construction needs to follow the requirements of vehicle maintenance. When a certain maintenance method begins to be implemented, the planned construction process must start to run, including traffic control, construction section adjustment, central median opening and closing, isolation, etc., which need to be repeatedly adjusted and optimized; sometimes the construction needs to follow the traffic organization plan, causing construction waiting and delaying the construction schedule.

[0034] To this end, the applicant designed a method for maintaining full lane traffic during the reconstruction and expansion of a six-lane expressway and a lane guidance system, which fully utilized road resources and rationally planned emergency parking points and rescue forces. At the same time, it can effectively improve construction efficiency and progress, thereby efficiently completing the reconstruction and expansion of high-volume expressways. 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.

[0035] The present invention relates to a method for maintaining full lane traffic during reconstruction and expansion of a six-lane expressway and a lane guidance system, comprising the following operating steps: S1. Determine the lane area to be expanded and constructed, divide the left and right sections of the construction section of the expanded and rebuilt expressway into multiple sections, and number each section in a staggered manner; S2. Perform synchronous construction work on the corresponding numbered areas in the left and right sections in sequence; S3. During the construction process, the unconstructed sections are used to maintain the smooth flow of traffic, and the speed limit is adopted in stages to ensure smooth traffic. S4. The expansion construction is completed and traffic returns to normal.

[0036] 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 overpasses; the construction of the upper and lower structures of the newly widened bridges on both sides of the main line bridges; 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 surface construction; central median reconstruction construction; the fourth period is the construction of the entire line's traffic projects and ancillary facilities such as facilities along the line, open traffic, and all lanes are open to traffic.

[0037] 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 line and rationally dividing the construction sections, a six-lane traffic organization plan is carried out in stages, and the road traffic is adjusted at different times, as shown in the following table: Table 1 Traffic conditions of roads at different traffic organization periods

[0038] The first period (estimated to be 12 months): corresponds to the roadbed construction stage, the construction content mainly includes widening the roadbed to the top surface of the roadbed; the construction and demolition of the overpass; and the construction of the upper and lower structures of the newly widened bridges on both sides of the main line bridge.

[0039] The main objectives of traffic organization at this stage are: 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. The speed limit can be appropriately reduced to 80km / h for local work sites due to construction needs, and the speed limit can be further limited to 60km / h on some sections with restricted conditions without diversion.

[0040] ② The construction and demolition of overpasses shall be based on the principle of ensuring safety, and try to ensure normal traffic on two-way six-lane roads. During this stage, some sections of the road will be closed for a short period of time.

[0041] The second and third periods (about 16 months in total): corresponding to the road surface construction stage. The main construction content is to renovate the old road of the existing expressway and splice the new and old road surfaces; lay temporary bridge decks for new bridges in some sections, reinforce and renovate the old bridges on the main line, and splice the new and old bridges; construct the road surface and bridge surface layer; and renovate the central dividing strip.

[0042] The main objectives of traffic organization during this period are: ① Traffic transfer maintains six lanes in both directions. As the splicing of the roadbed and pavement on some sections requires the occupation of the emergency lane of the old road, the six lanes are maintained in both directions while ensuring that the lateral width for vehicles is at least 0.5 meters.

[0043] The main goal of traffic organization at this stage is to ensure traffic safety and orderly construction under the conditions of traffic transfer and six-lane two-way traffic.

[0044] ② After the paving of the roadbed splicing 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 this two-way six-lane section.

[0045] 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, and traffic will be open to all lanes in both directions.

[0046] In step S1, the left and right sections of a construction bid section of the expanded expressway are divided 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, 4, and the corresponding sections of the other section are arranged in the order of 3, 4, 1, 2; two sections are grouped as a group and arranged in a cyclical manner.

[0047] The construction sequence of the left and right sections in step S2 specifically includes the following steps: S201, during the roadbed construction phase, the roadbed of the widened parts on both sides and the construction of the new bridge and culvert structures will be completed, and the original road will maintain two-way six-lane traffic; S202: Simultaneously construct the No. 3 working section on the left and right sides to widen the road surface to the top surface of the lower layer or the middle layer, flush with or nearly flush with the original road elevation. The corresponding widened bridges and culverts are constructed simultaneously, and the original road traffic still maintains two-way six-lane traffic; S203: After the lower middle surface layer of the widened section of Section 3 is constructed in advance, the pavement of Section 4 will be constructed simultaneously until the lower middle surface layer is flush with the original road surface elevation. During this period, the bridge and culvert construction of the widened section corresponding to Section 3 will be completed, and the conditions for temporary opening to traffic will be met; S204. When Section 4 is ready for temporary traffic, Section 1 will be closed and traffic will be diverted. The traffic on the two lanes of Section 3 will be diverted to the widened road surface, and the 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 removal of the overpass, the construction of the central median pier and the reconstruction of the overpass, the splicing of the main line bridge superstructure, the construction of the road surface, etc., until all the construction contents of Section 1 are fully completed; 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 closed for construction; S206, after the paving of the upper layer of Section 2 is completed, the traffic will be transferred to Section 1 which has been completed. The original road surface will be improved and the upper layer will be paved as a whole in the early stage of Section 3, and the bridge structure will be spliced ​​and the auxiliary facilities will be constructed, completing all the contents of the reconstruction and expansion of Section 3; S207. After the construction of Section 3 is completed, the remaining part of Section 4 will be constructed. The original road surface improvement and the overall paving of the upper layer corresponding to Section 4, the bridge structure splicing and the construction of ancillary facilities will be completed, and all contents of the reconstruction and expansion construction of Section 4 will be completed.

[0048] In a further preferred implementation manner, 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: Step A1: 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.

[0049] Step A2: Corresponding to the road construction stage, the left and right sections of a construction section of the expanded expressway are divided into 8 sections. In order 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 section of the other section is arranged in the order of 3, 4, 1, 2. Two sections are grouped together and arranged in a cycle. The specific situation of the section arrangement is as follows: Figure 2 shown.

[0050] Step A3: First, the No. 3 working section on the left and right sides will be constructed at the same time to widen the road surface to the top surface of the lower layer or the middle surface layer, which will be flush or nearly flush with the original road mark height. 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.

[0051] Step A4: After the lower and middle surface layers of the widened section of Section 3 are completed in advance, 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 (temporary pavement) corresponding to the widened section of Section 3 will also be completed and ready for temporary traffic. The traffic organization plan for this stage is as follows: Figure 4 shown.

[0052] Step A5: 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 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 of Section 1 is completed. The traffic organization plan for this stage is as follows: Figure 5 shown.

[0053] Step A6: 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.

[0054] Step A7: After the paving of the upper layer of Section 2 is completed, the 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, and 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.

[0055] Step A8: After the construction of Section 3 is completed, the remaining part of Section 4 will be constructed, the original road surface corresponding to Section 4 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, and all the contents of the reconstruction and expansion of Section 4 will be completed. The traffic organization plan for this stage is as follows: Figure 8 shown.

[0056] After the construction of Section 4 is completed, the reconstruction and expansion of the entire line has basically been completed, and the reconstruction and expansion of this project into a two-way ten-lane expressway has been completed and opened to traffic. The traffic organization plan for this stage is as follows Fig. 9 shown.

[0057] The method for maintaining full lane traffic during the reconstruction and expansion of a six-lane expressway and the lane guidance system 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 to analyze and process the received data; the guidance instruction terminal is used to receive the data analyzed and processed by the data processing module, and to match corresponding instruction signals to generate instruction execution signals; the display terminal is used to receive the instruction execution signals generated by the guidance instruction terminal, and to display corresponding instructions.

[0058] The vehicle sensor is an optical sensor, which 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 of time to the data processing module.

[0059] In a further preferred embodiment, taking into account that the construction, renovation and expansion work is on a two-way lane, the traffic guidance systems described in the present 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 speed limit of the two-way lane can be flexibly adjusted according to actual conditions, thereby avoiding the problem of low vehicle traffic efficiency during the construction process.

[0060] The specific analysis steps of the vehicle sensor real-time camera image capture, image processing recognition and counting are as follows: 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; R2, perform noise reduction and quality enhancement processing on each image frame in the generated image frame set P frame by frame to 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:

[0061] 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, 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:

[0062] 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 vehicle passing f.

[0063] 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 within the recording period of the vehicle sensor module. The specific processing formula is as follows:

[0064] 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; T2. When the calculated Y value is greater than 1, the traffic on the construction section can be ensured to be smooth, and there is no need for speed limit regulation; 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 regulate 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:

[0065] 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.

[0066] 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.

[0067] The display terminal is provided with a display screen of a predetermined operation size, which can generate and display the corresponding instructions. The display screen of the display terminal can be located at multiple different locations of the construction and expansion section, as long as it does not affect the construction and traffic and can play a certain prompting role. The vehicle sensor module, data processing module, and guidance instruction terminal can be set up in an integrated manner with the display screen of the display terminal. The vehicle sensor module can also be set up separately to facilitate data collection.

[0068] Secondly, through multi-level sequential traffic organization and diversion, consideration is given to better coordinating the main line bridges and other structures within the section to ensure traffic flow.

[0069] Step 1: Corresponding to the first and second phases of roadbed and pavement construction, while the roadbed on both sides of the expansion part is filled to the top of the roadbed and the pavement on both sides is built to the top of the flexible base, the bridge is simultaneously built on both sides of the bridge, the cast-in-place leveling layer is laid, and temporary isolation guardrails are set up. The traffic organization plan for this phase is as follows: Fig.10 shown.

[0070] It is particularly pointed out that the new bridge widening structure in this step needs to solve the two problems of foundation settlement difference and concrete shrinkage creep between the original structure and the new bridge widening structure. There is a waiting period (about 6 months) to complete the above two problems. After the waiting period, the bridge widening structure can be spliced ​​with the original bridge. During this step, there is a gap between the two, and each is independently stressed. In the roadbed and pavement steps A1 and A2, this solution can provide enough time for the foundation settlement and shrinkage creep of the bridge widening structure, creating conditions for splicing and widening with the original bridge.

[0071] Step 2: 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 (or right) traffic to the right (or left) and splice the new and old bridges on the left (or right). The traffic organization plan for this stage is as follows: Fig.11 shown.

[0072] Step 3: Corresponding to the fourth period of roadbed construction, the roadbed is constructed on one side of the roadbed, and the traffic is transferred to the other side. Construction step 3 is repeated to splice the new and old bridges on the other side. The traffic organization plan for this stage is as follows: Figure 12-13 shown.

[0073] After the splicing is completed, the temporary guardrail is removed and the bridge construction is completed.

[0074] Again, through multi-level sequential traffic organization plans, traffic organization emergency plans can be well planned.

[0075] While formulating the overall traffic organization plan, detailed planning was made for the traffic maintenance, rescue and equipment of each construction area during the traffic conversion of road sections, and the police force and facilities were adjusted in real time as the overall traffic organization plan section conversion cycle progressed.

[0076] 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 reconstruction and expansion of a six-lane expressway, characterized in that: The steps include: S1. Determine the lane area to be expanded and constructed, divide the left and right sections of the construction section of the expanded and rebuilt expressway into multiple sections, and number each section in a staggered manner; S2. Perform synchronous construction work on the corresponding numbered areas in the left and right sections in sequence; S3. During the construction process, the unconstructed sections are used to maintain the smooth flow of traffic, and the speed limit is adopted in stages to ensure smooth traffic. S4. The expansion construction is completed and traffic returns to normal.

2. The method for maintaining full lane traffic during reconstruction and expansion of a six-lane expressway according to claim 1, characterized in that: The construction of the six-lane highway expansion project is divided into four phases; 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; construction and demolition of the overpass; and construction of the upper and lower structures of the newly widened bridges on both sides of the main line bridges; The second and third periods correspond to the road construction stage; the main construction content is to renovate the old roads of existing expressways and splice the old and new roads; lay temporary bridge decks for new bridges in some sections, reinforce and renovate the old bridges on the main line, and splice the old and new bridges; construct the road surface and bridge deck surface layer; and renovate the central median strip; During the fourth period, the entire line's traffic engineering and ancillary facilities such as facilities along the line are under construction, and all lanes are open to traffic.

3. The method for maintaining full lane traffic during reconstruction and expansion of a six-lane expressway according to claim 2, characterized in that: In step S1, the left and right sections of a construction bid section of the expanded expressway are divided 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, 4, and the corresponding sections of the other section are arranged in the order of 3, 4, 1, 2; two sections are grouped as a group and arranged in a cyclical manner.

4. The method for maintaining full lane traffic during reconstruction and expansion of a six-lane expressway according to claim 3, characterized in that: The construction sequence of the left and right sections in step S2 specifically includes the following steps: S201, during the roadbed construction phase, the roadbed of the widened parts on both sides and the construction of the new bridge and culvert structures will be completed, and the original road will maintain two-way six-lane traffic; S202: Simultaneously construct the No. 3 working section on the left and right sides to widen the road surface to the top surface of the lower layer or the middle layer, flush with or nearly flush with the original road elevation. The corresponding widened bridges and culverts are constructed simultaneously, and the original road traffic still maintains two-way six-lane traffic; S203: After the lower middle surface layer of the widened section of Section 3 is constructed in advance, the pavement of Section 4 will be constructed simultaneously until the lower middle surface layer is flush with the original road surface elevation. During this period, the bridge and culvert construction of the widened section corresponding to Section 3 will be completed, and the conditions for temporary opening to traffic will be met; S204. When Section 4 is ready for temporary traffic, Section 1 will be closed and traffic will be diverted. The traffic on the two lanes of Section 3 will be diverted to the widened road surface, and the 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 removal of the overpass, the construction of the central median pier and the reconstruction of the overpass, the splicing of the main line bridge superstructure, the construction of the road surface, etc., until all the construction contents of Section 1 are 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 closed for construction; S206, after the paving of the upper layer of Section 2 is completed, the traffic will be transferred to Section 1 which has been completed. The original road surface will be improved and the upper layer will be paved as a whole in the early stage of Section 3, and the bridge structure will be spliced ​​and the auxiliary facilities will be constructed, completing all the contents of the reconstruction and expansion of Section 3; S207. After the construction of Section 3 is completed, the remaining part of Section 4 will be constructed. The original road surface improvement and the overall paving of the upper layer corresponding to Section 4, the bridge structure splicing and the construction of ancillary facilities will be completed, and all contents of the reconstruction and expansion construction of Section 4 will be completed.

5. A lane guidance system applied to the method for maintaining full lane traffic during reconstruction and expansion of a six-lane highway according to any one of claims 1 to 4, characterized in that: It includes a vehicle sensor module, a data processing module, a guidance command terminal and a display terminal; The vehicle sensor module is used to record the 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 the relevant data recorded by the vehicle sensor module and analyze and process the received data; The guiding 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.

6. A lane guidance system according to claim 5, characterized in that: The vehicle sensor is an optical sensor that uses a camera to capture images of the traffic conditions of vehicles on the road in real time, 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 of time to the data processing module.

7. A lane guidance system according to claim 6, characterized in that: The specific analysis steps of the vehicle sensor real-time camera image capture, image processing recognition and counting are as follows: 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; R2, perform noise reduction and quality enhancement processing on each image frame in the generated image frame set P frame by frame to 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: ； 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, 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: ； 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 vehicle passing f.

8. A lane guidance system according to claim 7, 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 within 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 opened in the construction section, l is the lane length of the road maintenance section, and s is the number of lanes in the road maintenance section; T2. When the calculated Y value is greater than 1, the traffic flow in the road section can be ensured to be smooth, and there is no need for speed limit regulation; When the calculated Y value is less than or equal to 1, there is a risk of traffic jam, 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.

9. A lane guidance system according to claim 8, 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.

10. The lane guidance system according to claim 5, 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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