Evaluation method of utilization level of unloading points in construction area based on refined traffic management

Abstract

This invention provides a method for evaluating the utilization level of unloading points in construction areas based on refined traffic management. Based on the spatial information and usage of each unloading point in the construction area, saturation is further converted into a utilization index. Using the time utilization index of the unloading points and the time-spatial utilization index of the buildings as a basis, the calculated time-spatial utilization index and time-spatial equilibrium index of each building are analyzed, and the utilization level of each building is evaluated. Based on the time utilization index of each building and the total time-spatial utilization index of the construction area, the time-spatial utilization index and time-spatial equilibrium index of the construction area are calculated, and finally, the time-spatial utilization level of the construction area is evaluated. This invention implements refined traffic management of the time and space of the construction area, proposes the concept of a utilization index to quantify the impact of different saturation levels, and uses the utilization level determined by the time-spatial utilization index and time-spatial equilibrium index to identify existing problems and find corresponding suggestions and measures.

Description

Technical Field

[0001] The present invention relates to the field of construction zone management assessment, and in particular to a construction zone unloading point utilization level assessment method based on saturation and balance calculation of refined traffic management. Background Art

[0002] With the further deepening of my country's reform and development, my country's economy is developing rapidly, continuously, stably and harmoniously. Infrastructure construction is still in full swing, providing impetus for my country's economic development. Whether the project can be completed and delivered within the construction period will directly affect the economic benefits of the project.

[0003] The unloading process is a very important part of the construction process. It is the beginning of the construction and will affect a series of subsequent construction arrangements. Blind allocation of resources will cause waste of manpower and material resources and ineffective waiting. In order to form good economic benefits, the construction party must reasonably arrange the unloading tasks to avoid low utilization and unbalanced use of manpower and material resources. It is necessary to carry out refined management of the construction site, and to carry out refined division and management of cargo transportation to unloading from the aspects of time and space. The efficient use of unloading points can ensure that the cargo is brought in and unloaded as scheduled, and ensure the efficient use of time and space in the construction. However, there is currently a lack of evaluation methods for whether the unloading area and unloading task arrangement under refined management are reasonable. The existing methods cannot reflect the nonlinear impact of different usage levels and different saturation on the construction progress. There is no analysis and evaluation from the perspectives of time and space. The evaluation indicators are too single and do not cover the utilization and balance at the micro, meso and macro levels at the same time. Summary of the invention

[0004] Purpose of the invention: In order to overcome the deficiencies of the above-mentioned prior art, the present invention is based on the concepts of time and space saturation and time and space utilization index, and is based on the time saturation and time utilization index of the building, the space saturation and space utilization index of the building, the total space utilization index of the building, and the total space-time utilization index, the time and space balance in the building, the space utilization index of each period in the construction area, the time balance index and the space balance index in the construction area. The utilization level of each construction area is evaluated and the total space-time utilization index and the total space-time balance index of the construction area are calculated, and finally the utilization level of the unloading point in the construction area is evaluated. Based on the utilization level obtained by the evaluation, its characteristics are determined, and corresponding construction area traffic organization is formulated for different states, and problems with the current unloading arrangement are determined, and directions and suggestions are provided for the improvement of the plan.

[0005] Technical solution: To solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A method for evaluating the utilization level of unloading points in a construction area based on refined traffic management, the method comprising the following steps:

[0007] (A) Based on the spatial information and usage of each unloading point in the existing construction area, establish a spatiotemporal distribution table of unloading points in the construction area;

[0008] (B) Calculate the time saturation of each unloading point and calculate its utilization index based on the time saturation;

[0009] (C) determining the time saturation and time utilization index of each building respectively, calculating the time period space saturation and time period space utilization index of each building according to the space saturation, and determining the time and space utilization index of each building;

[0010] (D) determining the temporal balance index and spatial balance index between the unloading points in each building, and obtaining the temporal and spatial balance index of each building respectively;

[0011] (E) Determine the total spatial saturation of the construction area, the total spatial utilization index of the construction area, and the total spatial and temporal utilization index of the construction area;

[0012] (F) Determine the overall spatial and temporal balance index of the construction area;

[0013] (G) First, the utilization level of the unloading points of each building is evaluated based on the spatiotemporal utilization index and spatiotemporal uniformity index of each building, and then the utilization level of the unloading points in the construction area is evaluated by combining multiple indicators.

[0014] The step (A) is as follows: the statistical time period is divided into T sub-time periods. If a loading point is occupied in a sub-time period, it is marked as 1, otherwise it is marked as 0, thereby obtaining a spatiotemporal distribution table of loading points in the construction area.

[0015] Step (B): Time saturation of the jth unloading point of the i-th building and time use index It is calculated using the following formula:

[0016]

[0017] Where T is the number of sub-time periods included in the statistical time period, T i,j It refers to the number of sub-time periods in which the j-th unloading point of the i-th building is occupied during the statistical time period.

[0018] The minimum requirement for saturation during the construction area statistical period P 0 P is the minimum target of the saturation of all unloading points in the construction area during the statistical period. This value is an important indicator to measure the urgency of the construction period. The more urgent the construction period, the higher the P value. 0 The larger the P 0 The value is generally between 0.15 and 0.4.

[0019] Time saturation of the jth unloading point using the i-th building Get the time utilization index of the jth unloading point of the i-th building The index is used to transform the saturation curve to reflect the nonlinear impact of different degrees on the project progress, reducing the saturation close to the minimum requirement P 0 Contribution of unloading point.

[0020] The calculation method of is as follows:

[0021]

[0022] Step (C): Based on the time saturation and time utilization index of all unloading points of the i-th building obtained in step (B), the time saturation of the i-th building can be calculated. and time use index The calculation model is as follows:

[0023]

[0024]

[0025] Where n i is the number of unloading points of the i-th building.

[0026] According to the spatiotemporal distribution map of the construction area, the spatial saturation of the i-th building in the t-th sub-time period is obtained. The calculation model is as follows:

[0027]

[0028] Where n i,t is the number of occupied unloading points of the i-th building in the t-th sub-time period.

[0029] Use the time period spatial saturation of the tth time period of the i-th building Get the time period space utilization index of the tth sub-time period of the i-th building The calculation method is as follows:

[0030]

[0031] Based on the obtained space utilization index of the i-th building in all time periods, the space utilization index of the i-th building can be calculated The calculation model is as follows:

[0032]

[0033] According to the time utilization index of the i-th building obtained above and space utilization index To determine the time and space utilization index of building i The calculation model is as follows:

[0034]

[0035] The step (D): the time balance and space balance in each building need to be determined separately before the time and space balance index of the building can be obtained. The time (space) balance index measures whether the use distribution of all unloading points in the building is uniform.

[0036] According to the time utilization index of all unloading points of the i-th building in step (B), the time balance index of the i-th building It can be calculated according to the following model:

[0037]

[0038] In the formula is the time utilization index of the kth unloading point of the i-th building.

[0039] Spatial balance index of the i-th building It can be calculated according to the following model:

[0040]

[0041] In the formula is the space utilization index of the i-th building in the m-th sub-time period.

[0042] According to the time balance index and space balance index calculated above, the time and space balance index of the i-th building can be calculated: The calculation model is as follows:

[0043]

[0044] Step (E): Obtain the total spatial saturation of the construction area in the t-th sub-time period according to the construction area spatiotemporal distribution map The calculation model is as follows:

[0045]

[0046] Where n t is the number of occupied unloading points in the construction area during the tth sub-time period.

[0047] Total spatial saturation of the construction area in the tth period Obtain the total space utilization index in the tth sub-time period of the construction area The calculation method is as follows:

[0048]

[0049] Based on the time utilization index of each building obtained in step (C) and the total time and space utilization index of all sub-time periods in the construction area, the total time and space utilization index U of the construction area can be calculated. TS , the calculation model is as follows:

[0050]

[0051] Where n is the number of buildings in the construction area; U T is the total time utilization index of the construction area; U S Total space utilization index of the construction area.

[0052] Step (F): Calculate the total time balance index E of the construction area according to the time utilization index and space utilization index of all buildings respectively T and spatial total equilibrium index E S , and then the total space-time balance index E of the construction area TS It can be calculated according to the following model:

[0053]

[0054] In the formula, is the time utilization index of the qth building in the construction area; is the space utilization index of the construction area in the pth sub-time period.

[0055] Step (G): Utilization level L of the unloading point of the i-th building i It can be divided according to the following conditions:

[0056]

[0057] In the formula is the time-space utilization index of the i-th building, The spatiotemporal equilibrium index of the i-th building.

[0058] A′ indicates that the utilization level of the unloading point of the i-th building is high, which can meet the schedule of the project and can be maintained; B′ indicates that the utilization level of the unloading point of the i-th building is medium, and the occupation time and turnover times of the unloading point need to be increased to improve its time-space utilization index; C′ indicates that the utilization level of the unloading point of the i-th building is low, and the unloading time and unloading points of the materials need to be evenly distributed, the pressure of the unloading points with higher utilization indexes needs to be shared, and the unloading efficiency needs to be improved to improve its time-space utilization index and time-space balance index.

[0059] By comparing the utilization levels of the unloading points of each building, we can quantitatively compare the utilization of the unloading points of each building and see which one is better or worse. Or by comparing the utilization levels of the unloading points of the same building at different times, we can quantitatively understand the changes in the utilization of the unloading points.

[0060] The total time and space utilization index U of the comprehensive construction area TS , time-space total equilibrium index E TS And the utilization level of each building, the utilization level L of the construction area is evaluated, and the evaluation model is as follows:

[0061]

[0062] Where N A is the number of buildings with utilization level A′ in the construction area, N B Refers to the number of buildings with utilization level B′ in the construction area.

[0063] A indicates that the utilization level of unloading points in the construction area is high, which can be maintained; B indicates that the utilization level of unloading points in the construction area is above average, and the occupation time and turnover times of each unloading point in the construction area are increased to improve the space-time utilization index of each building in the construction area; C indicates that the utilization level of unloading points in the construction area is medium, and the unloading time and unloading points of materials in each building are evenly distributed to improve the overall space-time balance index of the construction area; D indicates that the utilization level of unloading points in the construction area is below average, and the utilization level of each building needs to be improved to improve the overall space-time balance index of the construction area; E indicates that the utilization level of unloading points in the construction area is low, and the use time and frequency of unloading points of each building need to be increased, and the unloading time and unloading points of materials are evenly distributed to improve the overall space-time utilization index and the overall space-time balance index of the construction area.

[0064] If we rely on our feelings to evaluate the utilization of the construction area, we can only get qualitative conclusions, which will be biased and affected by subjective factors, and we may not even be able to feel the changes in the utilization. Through the above evaluation model, we can quantitatively analyze and compare the changes in the utilization of the unloading points in the construction area by comparing the utilization levels of the unloading points in the same construction area at different times. Or by comparing the utilization levels of multiple unloading points in the construction area, we can quantitatively compare the advantages and disadvantages of the utilization of each unloading point in the construction area.

[0065] Beneficial effects:

[0066] The present application provides a method for calculating the saturation and balance of a construction zone based on refined traffic management. Compared with the prior art, the present invention has the following advantages:

[0067] 1) Compared with other calculation methods of construction area saturation, based on saturation, the concept and calculation model of utilization index are proposed, which converts the linear saturation into nonlinear utilization index, reflecting the nonlinear impact of different saturations on project progress. For saturation close to the minimum requirement of saturation P 0 For saturation higher than the minimum requirement P, a lower score will be obtained, and the difference between it and the minimum requirement will be reduced; for saturation higher than the minimum requirement P 0 The higher the score, the greater the difference between it and the minimum requirement.

[0068] 2) Compared with other calculation methods of construction area saturation, this method calculates saturation, utilization index and equilibrium index from the aspects of time and space, and comprehensively evaluates the distribution of construction area plan in time and space.

[0069] 3) Compared with other calculation methods of construction area saturation, the concept and calculation model of equilibrium index are proposed to measure whether the use of each building (unloading point) in each construction area (building) is balanced, and whether the unloading load of some buildings (unloading points) is too high or too low.

[0070] 4) Compared with other calculation methods of construction area saturation, the indicators of unloading point, building and construction area are calculated and evaluated respectively, and the utilization of micro, meso and macro levels can be reflected. The process of construction area utilization level evaluation integrates multiple indicators from micro to macro, and divides them into five levels of AE according to different characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 is a flow chart of the method of the present invention;

[0072] Figure 2 is a flow chart of an embodiment of the present invention. DETAILED DESCRIPTION

[0073] The present invention is further described below based on specific examples of the present invention in conjunction with the accompanying drawings.

[0074] In one embodiment, a method for evaluating the utilization level of unloading points in a construction area based on refined traffic management is provided, such as Figure 1 As shown, the method comprises the following steps:

[0075] (A) Based on the spatial information and usage of each unloading point in the existing construction area, establish a spatiotemporal distribution table of unloading points in the construction area;

[0076] (B) Calculate the time saturation of each unloading point and calculate its utilization index based on the time saturation;

[0077] (C) determining the time saturation and time utilization index of each building respectively, calculating the time period space saturation and time period space utilization index of each building according to the space saturation, and determining the time and space utilization index of each building;

[0078] (D) determining the temporal balance index and spatial balance index between the unloading points in each building, and obtaining the temporal and spatial balance index of each building respectively;

[0079] (E) Determine the total spatial saturation of the construction area, the total spatial utilization index of the construction area, and the total spatial and temporal utilization index of the construction area;

[0080] (F) Determine the overall spatial and temporal balance index of the construction area;

[0081] (G) First, the utilization level of the unloading points of each building is evaluated based on the spatiotemporal utilization index and spatiotemporal uniformity index of each building, and then the utilization level of the unloading points in the construction area is evaluated by combining multiple indicators.

[0082] In one embodiment, a construction area unloading point utilization level assessment device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned construction area unloading point utilization level assessment method when executing the computer program.

[0083] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the above-mentioned construction area unloading point utilization level evaluation method are implemented.

[0084] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0085] In one embodiment, there are three buildings in a construction site that need to unload materials, and the minimum saturation requirement P in the construction area during the statistical period is 0 is 0.25, the first building has 3 unloading points, the second building has 4 unloading points, and the third building has 3 unloading points, for a total of 10 unloading points. The number ij is used to represent the jth unloading point of service building i. The statistical time is from 7:00 to 12:00, for a total of 5 hours.

[0086] (A) The time and space of the construction area are managed in a refined manner. The statistical time is divided into five equal parts. According to the usage time of each unloading point, the time-space distribution table of the unloading point is obtained as shown in Table 1.

[0087] Table 1 Time and space distribution of unloading points

[0088]

[0089] (B) Calculate the time saturation of each unloading point and calculate its utilization index based on the time saturation.

[0090] Take the first unloading point of the first building as an example:

[0091]

[0092]

[0093] Calculate the time saturation of other unloading points and time use index Finally, all the results are summarized as shown in Table 2.

[0094] Table 2 Time saturation and time utilization index of each building unloading point

[0095]

[0096] (C) Determine the time saturation and time utilization index of each building respectively, calculate the time period space saturation and time period space utilization index of each building, and determine the time and space utilization index of each building.

[0097] Take Building 1 as an example:

[0098]

[0099]

[0100] Take the first sub-time period (7:00-8:00) of Building 1 as an example:

[0101]

[0102] After calculating the time period spatial saturation of all sub-time periods of other buildings, all calculation results are statistically shown in Table 3.

[0103] Table 3 Spatial saturation of all sub-time periods of each building

[0104]

[0105] Take the time period space utilization index of the first sub-time period of the first building as an example:

[0106]

[0107] The time period space utilization index of all sub-time periods of other buildings is calculated, and all calculation results are shown in Table 4.

[0108] Table 4 Time period space utilization index of all sub-time periods of each building

[0109]

[0110] Take Building 1 as an example:

[0111]

[0112] The time and space utilization index of the first building is as follows:

[0113]

[0114]

[0115] (D) Determine the temporal balance index and spatial balance index between the unloading points in each building, and obtain the temporal and spatial balance index of each building accordingly.

[0116] Take Building 1 as an example:

[0117]

[0118]

[0119] Take Building 1 as an example:

[0120]

[0121]

[0122] According to the time balance index and space balance index calculated above, the time and space balance index of each building can be calculated. The calculation model is as follows:

[0123]

[0124]

[0125]

[0126] (E) Determine the total time-spatial saturation and total time-spatial utilization index of the construction area, as shown in Table 5.

[0127] Take Building 1 as an example:

[0128]

[0129]

[0130] Table 5 Total time space saturation and total time space utilization index of all sub-time periods of each building

[0131]

[0132] The total space-time utilization index of the construction area is calculated as follows:

[0133]

[0134] (F) Determine the overall temporal and spatial balance index of the construction area.

[0135]

[0136] (G) Because Therefore, the utilization level of the first building is L 1 is A′;

[0137] because Therefore, the utilization level of the second building is L 2 is C′;

[0138] because Therefore, the utilization level of the third building is L 3 is C′.

[0139] like Figure 2 As shown, the total space-time utilization index U of the comprehensive construction area TS , time-space total equilibrium index E TS And the utilization level of each building, the utilization level L of the construction area is evaluated, and the evaluation model is as follows:

[0140]

[0141] Because 0.75>U TS =0.4≥0.25,0.75>E TS =0.57≥0.25, and Therefore, the utilization level L of the construction area is E.

[0142] Through comprehensive evaluation of indicators, the utilization level of the construction area is low, only level E. It is necessary to increase the use time and frequency of each building unloading point to improve the total space-time utilization index and total space-time balance index of the construction area.

[0143] The utilization level of the first building is A′, but its time-space utilization index just meets the A′ condition, so the use time of each unloading point in the first building can be increased to improve the time-space utilization index. Most importantly, the utilization level of the second and third buildings is only C′, so it is necessary not only to increase the use time of each unloading point in the second and third buildings to improve the time-space utilization index, but also to evenly distribute the unloading tasks in time and space. Through adjustment, the total time-space utilization index and the total time-space balance index can be improved, and the utilization level is at a higher level.

[0144] The above description is only a specific implementation of the present invention in an embodiment, but the protection scope of the present invention is not limited thereto. Any person familiar with the technology can understand and think of any changes or substitutions within the technical scope disclosed by the present invention, which should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for evaluating the utilization level of unloading points in construction areas, characterized in that: The method comprises the following steps: Step (A), establishing a spatiotemporal distribution table of unloading points in the construction area according to the spatial information and usage of each unloading point in the construction area; Step (B), calculating the time saturation of each unloading point, and calculating its utilization index according to the time saturation; Step (C), respectively determining the time saturation and time utilization index of each building, calculating the time period space saturation and time period space utilization index of each building, and determining the time and space utilization index of each building; Step (D), determining the time balance index and space balance index between the unloading points in each building, and obtaining the time and space balance index of each building respectively based on the time balance index and space balance index of each building; Step (E), determining the total time-spatial saturation of the construction area, the total time-spatial utilization index, and the total time-space utilization index of the construction area; Step (F), determining the overall temporal and spatial balance index of the construction area; Step (G), evaluating the utilization level of the unloading points of each building according to the spatiotemporal utilization index and spatiotemporal balance index of each building, and then evaluating the utilization level of the unloading points in the construction area; In the step (A), the statistical time period is divided into several sub-time periods. If a loading point is occupied in a sub-time period, it is marked as 1, otherwise it is marked as 0, thereby obtaining a spatiotemporal distribution table of loading points in the construction area; The time saturation of the jth unloading point of the i-th building in (B) is and time use index It is calculated using the following formula: Where T is the number of sub-time periods included in the statistical time period, T i,j It refers to the number of sub-time periods occupied by the j-th unloading point of the i-th building during the statistical time period, and P0 is the minimum requirement for saturation during the statistical time period; The time saturation of the i-th building in step (C) and time use index It is calculated using the following formula: Where n i is the number of unloading points of the i-th building; The spatial saturation of the i-th building in the t-th sub-time period It is calculated using the following formula: Where n i,t is the number of occupied unloading points of the i-th building in the t-th sub-time period; The time period space utilization index of the i-th building in the t-th sub-time period It is calculated using the following formula: The space utilization index of the i-th building It is calculated using the following formula: The time-space utilization index of the i-th building It is calculated using the following formula: The time balance index of the i-th building in step (D) It is calculated using the following formula: In the formula is the time utilization index of the kth unloading point of the i-th building; Spatial balance index of the i-th building It is calculated using the following formula: In the formula is the space utilization index of the i-th building in the m-th sub-period; The time-space equilibrium index of the i-th building It is calculated using the following formula: The total spatial saturation of the construction area in the tth sub-time period in step (E) It is calculated using the following formula: Where n t is the number of unloading points occupied in the construction area in the tth sub-time period; The total space utilization index of the construction area in the tth sub-time period is It is calculated using the following formula: Total space-time utilization index U of the construction area TS It is calculated using the following formula: Where n is the number of buildings in the construction area; U T is the total time utilization index of the construction area; U S Total space utilization index of construction area; The total time-space equilibrium index E of the construction area in step (F) TS It is calculated using the following formula: In the formula, is the time utilization index of the qth building in the construction area; is the space utilization index of the construction area in the pth sub-time period; E T is the total time balance index of the construction area; E S is the total spatial balance index of the construction area; The utilization level L of the unloading point of the i-th building in step (G) i The classification is based on the following conditions: In the formula is the time-space utilization index of the i-th building, is the time-space balance index of the i-th building; A′ indicates that the utilization level of the unloading point of the i-th building is high, and it can be maintained; B′ indicates that the utilization level of the unloading point of the i-th building is medium, and the unloading point occupation time and turnover times need to be increased to improve its time-space utilization index; C′ indicates that the utilization level of the unloading point of the i-th building is low, and the unloading time and unloading points of materials need to be evenly distributed to improve its time-space utilization index and time-space balance index; The utilization level L of the unloading point in the construction area is divided according to the following conditions: Where N A is the number of buildings with utilization level A′ in the construction area, N B Refers to the number of buildings with a utilization level of B′ in the construction area; A means that the utilization level of the unloading points in the construction area is high, which can be maintained; B means that the utilization level of the unloading points in the construction area is medium-high, and the occupation time and turnover times of each unloading point in the construction area are increased to improve the time-space utilization index of each building in the construction area; C means that the utilization level of the unloading points in the construction area is medium, and the unloading time and unloading points of the materials of each building are evenly distributed to improve the total time-space balance index of the construction area; D means that the utilization level of the unloading points in the construction area is medium-low, and the utilization level of each building needs to be improved to improve the total time-space balance index of the construction area; E means that the utilization level of the unloading points in the construction area is low, and the use time and frequency of the unloading points of each building need to be increased, and the unloading time and unloading points of the materials are evenly distributed to improve the total time-space utilization index and the total time-space balance index of the construction area.

2. A construction area unloading point utilization level assessment device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the construction area unloading point utilization level evaluation method according to claim 1 are implemented.

3. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the construction area unloading point utilization level evaluation method according to claim 1 are implemented.

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