Railway engineering mixing station layout setting method and system based on full cost perspective

Abstract

The invention discloses a railway engineering mixing station layout setting method and system based on a full-cost perspective, and the method comprises the steps: determining and avoiding a region where a concrete mixing station is not suitable for setting, and determining a preliminary region site selection of the concrete mixing station in combination with the concrete engineering amount required by a project and the distribution condition of the concrete engineering amount; on the basis of the preliminary area site selection result, a site suitable for setting of the concrete mixing station in the area is determined by combining site conditions, and a layout setting scheme of the concrete mixing station is preliminarily determined; based on the preliminarily determined layout setting scheme, total cost calculation including large temporary cost, land cost, matched small temporary engineering cost and material transportation cost is carried out; and adjusting and optimizing the layout setting scheme of the concrete mixing station according to the cost calculation result. The layout setting of the railway engineering concrete mixing station is analyzed and calculated from the perspective of full cost, the economical efficiency, rationality and implementability of the layout setting of the railway engineering concrete mixing station are improved, and the investment of the railway engineering concrete mixing station is scientifically controlled.

Description

Technical Field

[0001] The present invention relates to the technical field of railway engineering, and in particular to a method and system for setting up the layout of a railway engineering mixing station based on a full-cost perspective. Background Art

[0002] Railway engineering concrete mixing stations should be set up in areas with flat terrain and good foundation. In the design stage, the traditional method of setting up the layout of concrete mixing stations considered the large temporary engineering costs and land costs from the perspective of cost when making technical and economic comparisons. Although the equipment costs of concrete mixing stations, concrete mixing costs, transportation costs, and small temporary costs such as office and production houses included in the measures costs, which are amortized in the machine shifts, have been included in the overall project investment, they have not been considered in the technical and economic comparison of the layout of concrete mixing stations. According to project practical experience, the above problems often easily lead to the actual location of concrete mixing stations being different from the designed location during the construction phase, which has a certain impact on the acceptance and pricing and construction management.

[0003] In the past, the costs related to concrete mixing stations in railway engineering projects often adopted a lump sum model, and the external environment was relatively relaxed. After the project started, the location of the concrete mixing station could be slightly adjusted according to the specific conditions of the project. However, with the improvement of environmental protection requirements, the site selection of concrete mixing stations has become increasingly difficult. For example, in plateau mountain railways, due to the limitations of geological and topographical factors along the line, it is difficult to select a site suitable for the layout of a concrete mixing station according to the traditional site selection ideas for concrete mixing stations, and large three-connection and one-leveling costs may occur; for example, in plain area railways, some sites suitable for the layout of concrete mixing stations have been classified as permanent basic farmland. The above reasons have greatly increased the difficulty of adjusting the location of the concrete mixing station after the project starts.

[0004] In addition, with the development of the market economy and the improvement of people's living standards, the proportion of equipment costs, laboratories, living houses and other small temporary costs of concrete mixing stations is gradually increasing. The amortization costs and measures costs of concrete mixing stations in mechanical shifts are becoming more and more important. The previous technical and economic comparison method can no longer meet the layout and setting requirements of concrete mixing stations in current railway projects. Therefore, it is necessary to accurately consider various factors of the total cost of concrete mixing stations in the design stage, incorporate equipment costs and small temporary costs into the technical and economic comparison of the layout and setting of concrete mixing stations, and from the perspective of the total cost of concrete mixing stations, coordinate the actual project, environmental protection, land policies and other factors, scientifically select the location of concrete mixing stations, and reasonably layout the distribution of concrete mixing stations along the entire line. This is an urgent problem to be solved. Summary of the invention

[0005] The present application provides a method and system for setting up the layout of a railway engineering mixing station based on a full-cost perspective, so as to solve the problem that the existing layout setting of a concrete mixing station that only considers the temporary engineering costs and land use costs will cause the actual location of the concrete mixing station during the construction phase to be different from the designed location, which will affect the acceptance pricing and construction management.

[0006] According to the first aspect, an embodiment provides a method for setting up a railway engineering mixing plant layout based on a full cost perspective, the method comprising:

[0007] Identify and avoid areas that are not suitable for setting up concrete mixing plants, and determine the preliminary regional site selection for the concrete mixing plants based on the concrete engineering quantity and distribution required for the project;

[0008] Based on the preliminary regional site selection results and combined with site conditions, determine the site in the region that is suitable for setting up a concrete mixing plant, and preliminarily determine the layout and setting plan of the concrete mixing plant;

[0009] Based on the preliminary layout plan, calculate the full cost including major temporary construction costs and land costs, supporting minor temporary construction costs and material transportation costs;

[0010] According to the cost calculation results, adjust and optimize the layout and setting plan of the concrete mixing station.

[0011] Furthermore, identify and avoid areas that are not suitable for setting up concrete mixing plants, including:

[0012] By investigating and analyzing the external environmental factors along the railway project, areas that are not suitable for setting up concrete mixing plants are determined and avoided.

[0013] Furthermore, combined with the concrete engineering quantity and its distribution required by the project, the preliminary regional site selection of the concrete mixing plant is determined, including:

[0014] Calculate the concrete quantity of the project, including: estimating the concrete quantity based on the actual construction experience of the railway project site; or calculating the concrete quantity by referring to the statistical results of concrete quantity in the previous stage and adjusting the plan in combination with the actual situation in the current stage;

[0015] According to the concrete engineering quantity and its distribution, the concrete mixing station is preliminarily sited in the region, including: when setting up the layout of the concrete mixing station, it should be inclined towards the places where the concrete engineering quantity is concentrated, and the places where the concrete engineering quantity is more dispersed should be considered for setting up in a comprehensive manner.

[0016] Furthermore, based on the preliminary regional site selection results and combined with the site conditions, a site suitable for setting up a concrete mixing station in the region is determined, and a preliminary layout plan for the concrete mixing station is determined, including:

[0017] Obtain site conditions through investigation, including topography, construction conditions of access lines to stations, water sources, power supply conditions, and land costs;

[0018] Select areas with relatively flat terrain, convenient transportation, good construction water and power sources, and low land costs to set up concrete mixing plants;

[0019] On the basis of meeting the supply radius requirements, the location and number of concrete mixing stations are preliminarily determined.

[0020] Furthermore, the temporary expenses and land use costs are calculated, including:

[0021] The calculation includes earthwork, retaining costs, station access line costs, temporary water supply facilities, and temporary power supply facilities costs;

[0022] Investigate the type, unit price and number of surface attachments of temporary land at the proposed site, study the reclamation plan, and calculate the land cost of the concrete mixing station based on the service life of the temporary land.

[0023] Furthermore, the calculation of temporary expenses and land use costs also includes:

[0024] Analyze and calculate the daily peak concrete demand of each concrete mixing station in the layout plan;

[0025] Calculate the design production capacity of different types of concrete mixing plants;

[0026] Select equipment for each concrete mixing station based on the designed production capacity of different types of concrete mixing stations and the daily peak concrete demand of each concrete mixing station;

[0027] Based on the equipment selection results of the concrete mixing station, further calculation of temporary expenses and land use costs, including: earthwork, retaining costs, foundation treatment, hardened surface costs, equipment purchase and installation costs, drainage ditch masonry costs.

[0028] Further, calculate the cost of supporting small temporary projects, including:

[0029] The costs of small temporary projects include the costs of office, production, public housing and its supporting facilities within the concrete mixing station, the costs of small temporary housing and supporting facilities including earthwork, foundation treatment, hardened surface, masonry, and land use costs.

[0030] Furthermore, calculate the material transportation costs, including:

[0031] Material transportation costs include the transportation costs of transporting raw materials to a concrete mixing station and the transportation costs of transporting finished concrete from a concrete mixing station to the construction site.

[0032] Furthermore, according to the cost calculation results, the layout and setting plan of the concrete mixing plant is adjusted and optimized, including:

[0033] On the premise of meeting the supply radius requirements and concrete demand, the layout and setting plan of the concrete mixing station is adjusted, and the cost calculation results before and after the plan adjustment are compared, and the plan with lower cost is selected first.

[0034] According to the second aspect, in one embodiment, a railway engineering mixing plant layout setting system based on a full cost perspective is provided, the system comprising:

[0035] The preliminary regional site selection module is used to determine and avoid areas that are not suitable for setting up concrete mixing plants, and determine the preliminary regional site selection of concrete mixing plants based on the concrete engineering quantity required for the project and its distribution;

[0036] The module for determining the preliminary layout plan is used to determine the site suitable for setting up the concrete mixing plant in the region based on the preliminary regional site selection results and combined with the site conditions, and to preliminarily determine the layout plan of the concrete mixing plant;

[0037] The full cost calculation module is used to calculate the full cost including major temporary costs and land costs, supporting minor temporary project costs and material transportation costs based on the initially determined layout setting plan;

[0038] The layout scheme optimization module is used to adjust and optimize the layout setting scheme of the concrete mixing plant according to the cost calculation results.

[0039] The present application provides a method and system for setting up the layout of a railway engineering concrete mixing station based on a full-cost perspective. Based on the previous research on the layout of railway engineering concrete mixing stations, combined with new features that have emerged in the site selection, construction, and production of concrete mixing stations in recently started projects, and considering changes in external factors such as environmental protection and land use costs, the layout of railway engineering concrete mixing stations is analyzed and calculated from a full-cost perspective, thereby improving the economy, rationality, and feasibility of the layout of railway engineering concrete mixing stations, and scientifically controlling the investment in railway engineering concrete mixing stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 A flow chart of a method for setting up a railway engineering mixing plant layout based on a full-cost perspective provided by an embodiment of the present invention;

[0041] Figure 2 A specific implementation flow chart of a method for setting up a railway engineering mixing plant layout based on a full-cost perspective provided by an embodiment of the present invention;

[0042] Figure 3A schematic diagram of the logical structure of a railway engineering mixing plant layout setting system based on a full-cost perspective is provided for one embodiment of the present invention. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0044] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0045] The first embodiment of the present invention provides a method for setting up a railway engineering mixing station layout based on a full cost perspective. Figure 1 and Figure 2 Provide detailed explanation.

[0046] like Figure 1 As shown, in step S100, the area that is not suitable for setting up a concrete mixing station is determined and avoided, and the preliminary regional site selection of the concrete mixing station is determined in combination with the concrete engineering quantity required for the project and its distribution.

[0047] The above steps specifically include:

[0048] S110, by investigating and analyzing the external environmental factors along the railway project, determine the areas that are not suitable for setting up concrete mixing plants and avoid them.

[0049] Specifically, we first analyze and determine the external environmental factors for setting up a concrete mixing station for railway projects: first investigate the permanent basic farmland, environmental protection zones, areas with poor geological distribution, residential areas, etc. along the railway project, and the concrete mixing station should be set up away from the above areas.

[0050] S120, calculate the concrete quantity of the project, including: estimating the concrete quantity based on the actual construction experience of the railway project site; or calculating the concrete quantity by referring to the statistical results of concrete quantity in the previous stage and adjusting the plan in combination with the actual situation in the current stage.

[0051] S130, based on the concrete engineering quantity and its distribution, preliminary regional site selection for concrete mixing plants shall be carried out, including: when setting up the layout of concrete mixing plants, they should be tilted towards places where the concrete engineering quantity is concentrated, and places where the concrete engineering quantity is more dispersed should be considered for setting up in a comprehensive manner.

[0052] Specifically, after excluding the influence of the external environmental factors of S110 mentioned above, the concrete engineering quantity of the project is calculated: the concrete engineering quantity of this project is analyzed and counted. When laying out the concrete mixing station, it should be inclined towards the places where the concrete engineering quantity is concentrated, and the places where the concrete engineering quantity is more dispersed should be comprehensively considered for setting up. According to the concrete engineering quantity and its distribution, a preliminary regional site selection is carried out for the concrete mixing station.

[0053] There are several ways to calculate the concrete quantity of a project:

[0054] (1) Calculation based on empirical values

[0055] The layout and setting of railway engineering concrete mixing plants often occur in the project survey stage. At this stage, it is difficult for various professionals to provide relatively accurate concrete quantities. Therefore, the amount of concrete can be estimated based on the actual construction experience of the railway project site. The amount of concrete used in the lower part of the bridge project and the auxiliary project is affected by factors such as the height of the bridge, geological and topographical conditions, and is usually 21-44 cubic meters per meter. The amount of concrete used in the tunnel project is affected by factors such as the shape and size of the tunnel section with different speed target values ​​and the geological conditions along the tunnel line, and is usually 44-50 cubic meters per meter. Since the roadbed project is greatly affected by the topography along the line, the amount of concrete used in the retaining and reinforcement protection project is difficult to determine within a certain range, but it is usually less than the amount of concrete used per linear meter of the bridge and tunnel projects.

[0056] (2) Calculated based on the number of professional offers

[0057] During the preliminary design and construction drawing design stages of railway projects, the concrete project quantity can be calculated by counting the project quantity of the previous stage and combining it with the scheme adjustments of this stage.

[0058] For example:

[0059] A railway construction project, the new main line is led out from the exit of a certain station (DK299+200) to the designed end point (DK537+936), the main line length is 238.74km, the speed target value is 350km / h, the average bridge height is 34 meters, of which the mileage from DK299+200 to DK506+306 is 207.11km long, the tunnel project length is 168.64km, the bridge project length is 30.69km, and the remaining 7.78km is roadbed project, with a bridge-tunnel ratio of 96.2%; the remaining mileage is DK506+306-DK537+936, the main line length is 31.63km, there is no tunnel project, the bridge project length is 21.97km, the roadbed project length is 9.66km, and the bridge ratio is 69.5%. Through statistical calculation, the unit concrete consumption of the bridge project of this project is 23.6 cubic meters / extended meter, and the unit concrete consumption of the tunnel project (main tunnel) is 49.8 cubic meters / extended meter. Combined with the project distribution and the areas where concrete mixing stations should not be set up in S1, the density of setting up concrete mixing stations in the section from DK299+200 to DK506+306 of this project should be greater than that in the section from DK506+306 to DK537+936. According to the statistical analysis of the supply range of concrete mixing stations in completed projects, the supply radius is generally less than 15km. In the section DK506+306-DK537+936, preliminary regional site selection can be carried out according to the supply radius requirements and combined with the project distribution. Specifically, 1-2 concrete mixing stations can be set up in this section; in the section from DK299+200 to DK506+306, on the basis of meeting the supply radius requirements, the layout of concrete mixing stations can be appropriately increased in combination with the project distribution. For example, one concrete mixing station can be set up near the work site connected by the bridge and tunnel, and one mixing station can be considered to be set up at the auxiliary tunnel entrance that is far away. Specifically, according to the above-mentioned supply radius requirements and the principle of increasing the number of mixing stations, 60 concrete mixing stations can be set up in this section.

[0060] like Figure 1 As shown, in step S200, based on the preliminary regional site selection results and in combination with the site conditions, a site suitable for setting up a concrete mixing station in the region is determined, and a layout setting plan for the concrete mixing station is preliminarily determined.

[0061] The above steps specifically include:

[0062] S210, obtain on-site site conditions through investigation, including topography and landforms, construction conditions of access lines to stations, water sources, power supply conditions, and land use costs;

[0063] S220, select an area with relatively flat terrain, convenient transportation, good construction water and power supply, and low land cost to set up a concrete mixing station;

[0064] S230: On the basis of meeting the supply radius requirements, preliminarily determine the location and number of concrete mixing stations.

[0065] Specifically, based on the distribution of concrete engineering quantities and regional site selection conditions described in S100, site conditions are judged: site conditions include topography and geomorphology, construction conditions of access lines to stations, water sources, power supply conditions, land use costs, etc. The site where a concrete mixing station can be set up in the region is selected to set up a concrete mixing station in an area with relatively flat terrain, convenient transportation, and good water and power sources for construction.

[0066] Site condition determination: Based on the step described in S100, the site conditions are obtained through on-site investigation.

[0067] (1) For example, if a tunnel entrance is located on a high and steep slope and the terrain around the tunnel entrance is undulating, if a concrete mixing station is set up near the tunnel entrance, a large amount of excavation, filling and protection may be generated, resulting in an increase in the construction cost.

[0068] (2) Building a station here will require the construction of a new access line to the station. On the one hand, it is necessary to overcome the height difference by extending the line, which increases the length of the access line. On the other hand, the construction of the access line itself will also incur the cost of excavation, filling, and protection, further increasing the cost of station construction.

[0069] At this time, it is judged that the site conditions for the tunnel entrance station construction are poor, and it is necessary to expand the scope of investigation and select a suitable site.

[0070] (3) Water and power supply conditions also need to be determined through on-site investigation. For example, there should be available water and power sources around the site where the station is to be built, so as to reduce the cost of water supply mains and temporary power lines.

[0071] (4) To determine the land cost, an on-site investigation of the land type and the surface attachments is required. For example, there are two sites with basically the same conditions 500 meters away from the entrance of a tunnel. The land types are forest land and grassland respectively. According to the comprehensive land price of the administrative district to which the project belongs, it is calculated that the unit price of requisitioning grassland for one year is lower than the unit price of requisitioning forest land for one year. In this case, the grassland can be occupied to reduce the cost of station construction. For example, if both sites are forest land, one of which is planted with fruit trees and the other has scattered shrubs on the surface, the site with scattered shrubs on the surface can be selected to build the station to reduce the compensation cost for the surface attachments. The reclamation cost is calculated according to the design plan. For each proposed site, the land cost is calculated by comprehensively considering the land rental fee, surface attachment compensation fee, and reclamation fee.

[0072] By further narrowing the site selection range of concrete mixing stations, the number of concrete mixing stations is preliminarily determined. For example, for the A railway construction project, after calculating the amount of concrete, conducting on-site investigations and judging the site conditions, 45 concrete mixing stations were preliminarily selected on the basis of meeting the supply radius requirements, as shown in the following table:

[0073]

[0074]

[0075] like Figure 1 As shown, in step S300, based on the preliminarily determined layout setting plan, a full cost calculation including large temporary costs and land costs, supporting small temporary project costs and material transportation costs is performed.

[0076] (1) Calculate temporary expenses and land costs

[0077] Specifically including: S310, calculate the costs of earthwork, retaining walls (if any), access roads, temporary water supply facilities, and temporary power supply facilities; investigate the type of temporary land, unit price, and number of surface attachments at the proposed site, study the reclamation plan, and calculate the land cost of the concrete mixing station based on the term of use of the temporary land.

[0078] The relevant fees are calculated as follows:

[0079] The site condition cost of a concrete mixing station is: B 1 =C 1 +C 2 +C 3 +……+C n , where:

[0080] B 1 — Site condition cost of a concrete mixing station from a full cost perspective;

[0081] C 1 — Expenses for earthwork and protection of a concrete mixing station;

[0082] C 2 —Cost of the access line to a concrete mixing station;

[0083] C 3 —The land cost of a concrete mixing plant (including land rental fees, compensation fees for surface attachments, reclamation fees and other land-related costs);

[0084] C n —Other costs of site conditions at a concrete mixing station, such as temporary water and electricity costs, etc.

[0085] The above steps specifically include:

[0086] S320, analyze and calculate the daily peak concrete demand of each concrete mixing station in the layout plan; calculate the design production capacity of different types of concrete mixing stations; select equipment for each concrete mixing station according to the design production capacity of different types of concrete mixing stations and the daily peak concrete demand of each concrete mixing station; based on the equipment selection results of the concrete mixing station, further calculate the major temporary expenses and land use costs, including: earthwork, retaining costs, foundation treatment, hardened surface costs, equipment purchase and installation costs, drainage ditch masonry costs.

[0087] In this embodiment, the design production capacity of the concrete mixing station is determined based on the obtained distribution of concrete engineering quantities and the judgment results of site conditions: the daily peak concrete demand of each concrete mixing station is analyzed and calculated to determine the design production capacity of the concrete mixing station. The design production capacity affects the equipment selection, aggregate storage, and land size of the concrete mixing station. According to the determined design production capacity, the costs of major temporary projects such as site foundation treatment and hardened surface are calculated, and the land cost is further calculated. The purchase and installation costs of equipment such as mixing equipment and material conveying equipment of the concrete mixing station are calculated. The details are as follows:

[0088] Calculation of design production capacity of concrete mixing station:

[0089] (1) Calculate the daily peak concrete demand of the concrete mixing station, taking the No. 14-16 mixing station of the A railway construction project as an example:

[0090]

[0091] Concrete mixing station No. 14 supplies one tunnel and one extra-large bridge. According to the analysis of the overall project schedule, during the peak period of tunnel construction, there is one working face. Considering the III-level surrounding rock, the average daily progress index is 4.5 meters, and the daily concrete demand is 49.8*4.5*1=224.1 cubic meters. During the peak period of the bridge, there is one working face, divided into 2 pile foundations, with an average daily concrete demand of 21.6 cubic meters / pile, and 1 pedestal, with an average daily concrete demand of 244.6 cubic meters. The peak concrete consumption on that day is 224.1+21.6*2+244.6=511.9 cubic meters.

[0092] Concrete mixing station No. 15 supplies the entrance area and No. 1 inclined area of ​​a tunnel. According to the analysis of the overall project schedule, the three working faces during the peak period of tunnel construction are considered to have Grade III surrounding rock, with an average daily progress indicator of 4.5 meters. The peak concrete consumption on that day is 49.8*4.5*3=672.3 cubic meters.

[0093] Concrete mixing station No. 16 supplies the No. 2 inclined shaft work area and exit work area of ​​a tunnel, a middle bridge and the entrance work area of ​​another tunnel. According to the analysis of the overall project schedule, there are four working faces during the peak period of tunnel construction. Considering the III grade surrounding rock, the average daily progress index is 4.5 meters, and the daily concrete demand is 49.8*4.5*4=896.4 cubic meters; there is one working face during the peak period of the bridge, divided into 1 pile foundation, and the average daily concrete demand is 21.6 cubic meters / pile. The peak concrete consumption of the day is 896.4+21.6=918.0 cubic meters.

[0094] (2) Calculate the design production capacity of the concrete mixing station. According to the Technical Specifications for Mechanical Configuration of Railway Concrete Mixing Stations (Q / CR9223-2015), the daily production capacity of the mixing station is calculated using the following formula:

[0095] Q d =a×C×t×Q h

[0096] Where:

[0097] Q d --- Daily production capacity of mixing station (m 3 / d);

[0098] a---Daily production capacity imbalance coefficient, which can be 0.5 to 0.8;

[0099] C---Number of effective working shifts per day;

[0100] t---Effective working hours per shift, which can be 6 to 7. For economic considerations, large mixing plants should take a higher value;

[0101] Q h ---Hourly production capacity of mixing station (m 3 / h).

[0102] The hourly production capacity of the mixing station is calculated using the following formula:

[0103] Q h =n×Qz

[0104] Where:

[0105] Q h ---Hourly production capacity of mixing station (m 3 / h);

[0106] n---The number of mixers equipped in the mixing station;

[0107] Qz---Productivity of single mixer (m 3 / h);

[0108] Qz=3600×V 1×ф 1 / (t 1 +t 2 +t 3 )

[0109] Where:

[0110] Qz---Productivity of single mixer (m 3 / h);

[0111] V 1 ---Feeding capacity (m3)

[0112] ф 1 ---Discharge coefficient, can be 0.8~0.9;

[0113] t 1 ---Feeding time (s), can be 30s;

[0114] t 2 ---Pure stirring time (s), can be 120s;

[0115] t 3 ---Discharging time (s), can be 30s.

[0116] The daily production capacity of common types of concrete mixing plants is calculated as follows:

[0117]

[0118] Note: The discharge coefficient is 0.9, calculated based on 2 shifts of 14 hours per day

[0119] After the above two-step calculation of S4, the No. 14 concrete mixing station can select the 2HZS60 concrete mixing station, the No. 15 concrete mixing station can select the 2HZS90 concrete mixing station, and the No. 16 concrete mixing station can select the 2HZS120 concrete mixing station.

[0120] The relevant fees are calculated as follows:

[0121] The costs related to the designed production capacity of a concrete mixing station are:

[0122] D 1 =C 1-1 +C 3-1 +E 1 +E 2 ……+E n

[0123] Where:

[0124] D 1 — the costs of a concrete mixing plant related to the designed production capacity from a full cost perspective;

[0125] C 1-1 — Excavation and protection costs of a concrete mixing station: According to the selection results of the concrete mixing station, the costs are further calculated on the basis of S310;

[0126] C 3-1 —Land cost of a concrete mixing plant (including land rental fees, compensation fees for surface attachments, reclamation fees and other land-related costs): Based on the selection results of the concrete mixing plant, the land cost is further calculated on the basis of S310;

[0127] E 1 - Expenses for foundation treatment and hardened surface of a concrete mixing station: Since each mixing station has different locations, geological conditions and production capacities, the expenses for foundation treatment and hardened surface of each mixing station are also different. Such expenses should be calculated accordingly;

[0128] E 2 — Equipment purchase and installation costs for a concrete mixing station: including mixing equipment, material conveying equipment, etc.;

[0129] E n —Other costs related to the designed production capacity of a concrete mixing plant, such as drainage ditch masonry costs, and equipment costs for the purchase and installation of gas systems, hydraulic systems, electrical systems, etc.

[0130] (2) Calculate the cost of supporting small temporary projects

[0131] Specifically, S330 calculates the cost of supporting small temporary projects: including office, production, public housing, etc. inside the concrete mixing station, such as offices, laboratories, material warehouses, employee dormitories and other houses and their supporting facilities, and calculates the cost of site earthwork, foundation treatment, hardened surface, masonry, etc. Combined with the calculation results, optimize and adjust the layout of the concrete mixing station.

[0132] 1. Calculation of relevant expenses

[0133] Based on the production capacity and equipment selection of each concrete mixing station, calculate the cost of its supporting small temporary project:

[0134] H 1 =G 1 +G 2 +C 3-2

[0135] Where:

[0136] H 1 —All costs of a concrete mixing plant and a small temporary project;

[0137] G 1— Expenses for offices, laboratories, material storage, staff dormitories and other buildings and their supporting facilities at a concrete mixing station;

[0138] G 2 —Construction of a new concrete mixing station 1 Costs of earthwork, foundation treatment, hardened surface, masonry, etc. incurred by small temporary facilities;

[0139] C 3-2 ——The land cost of a concrete mixing station (including land rental fees, surface attachment compensation fees, reclamation fees and other land-related costs): According to the design plan of the small temporary project of the concrete mixing station, the land cost is further calculated on the basis of S320.

[0140] 2. Optimize and adjust the layout of the concrete mixing station

[0141] After the design production capacity and selection of the concrete mixing station and the small temporary project are determined, the land area is basically determined. For example, if the calculated design production capacity of a mixing station is relatively large, after expanding the proposed site in S200, there will be situations such as occupying permanent basic farmland, or the amount of earthwork and retaining will increase significantly, and the geological conditions will deteriorate, causing an increase in foundation treatment costs. At this time, another site can be selected near the original site to optimize and adjust the layout of the concrete mixing station.

[0142] (3) Calculate material transportation costs

[0143] Specifically, S340, based on the above-mentioned adjusted concrete mixing station layout, calculate the transportation costs of finished concrete and raw materials such as sand and gravel: Calculate the transportation costs of finished concrete according to the supply (concrete mixing station layout and design production capacity) and demand (work point distribution and work point concrete consumption) relationship. Calculate the raw material transportation costs according to the investigated sand and gravel point distribution. Adjust and optimize the concrete mixing station layout in combination with the calculation results.

[0144] Calculation of relevant costs:

[0145] On the basis of determining the supporting costs of small temporary projects of each concrete mixing station, calculate the transportation costs of finished concrete and raw materials:

[0146] J 1 =I 1 +I 2

[0147] Where:

[0148] J 1 — Cost of raw materials and finished concrete for a concrete mixing station from a full cost perspective

[0149] I 1—Transportation costs of raw materials such as sand and gravel to a concrete mixing station: Before determining the location of a concrete mixing station, each project has investigated the sand and gravel points available for the project, and can measure the road transportation distance from the sand and gravel points to each concrete mixing station. According to the highway freight rates published by various places, the amount of aggregates supplied by the sand and gravel points to each mixing station is calculated, and the relevant costs are calculated.

[0150] I 2 —Transportation costs of finished concrete from a concrete mixing station to construction sites: Based on the highway freight rates published by various places, measure the highway transportation distance from the concrete mixing station to each construction site within the supply range, calculate the concrete demand quantity of each construction site, and calculate the relevant costs.

[0151] like Figure 1 As shown, in step S400, the layout setting plan of the concrete mixing plant is adjusted and optimized according to the cost calculation result.

[0152] Optimize and adjust the layout settings of the concrete mixing station:

[0153] For example: The site condition costs of concrete mixing stations No. 14 and No. 15 are B 14 , B 15 , the cost related to design production capacity is D 14 , D 15 , the cost of supporting small temporary project is H 14 , H 15 , the transportation cost is J 14 , J 15 , the cost of the two concrete mixing stations is F 1 =B 14 +B 15 +D 14 +D 15 +H 14 +H 15 +J 14 +J 15 .

[0154] According to the daily peak concrete demand of the two concrete mixing stations and the daily production capacity of each type of concrete mixing station, the No. 14 and No. 15 concrete mixing stations can be combined into a 2HZS180 concrete mixing station. The supply range of the No. 14 and No. 15 concrete mixing stations is from DK376+854 to DK385+615, which does not exceed the supply radius requirement. At this time, a suitable site can be investigated on site within the range of DK376+854 to DK385+615, or the site of the original No. 14 and No. 15 concrete mixing stations (DK377+000 and DK382+600) can be used to set up a new 2HZS180 concrete mixing station. At this time, the cost of setting up a new concrete mixing station is F 2 =B 14新 +B15新 +D 14新 +D 15新 +H 14新 +H 15新 +J 14新 +J 15新 .

[0155] Compare F 1 and F 2 , if F 1 <F 2 , then maintain the original design of 2 concrete mixing stations No. 14 and No. 15; if F 1 >F 2 From the perspective of cost saving, you can choose to build a new 2HZS180 concrete mixing station.

[0156] Corresponding to the above-disclosed method for setting up the layout of a railway engineering mixing station based on a full-cost perspective, the embodiment of the present invention further discloses a system for setting up the layout of a railway engineering mixing station based on a full-cost perspective, such as Figure 3 As shown, it specifically includes:

[0157] The preliminary regional site selection module is used to determine and avoid areas that are not suitable for setting up concrete mixing plants, and determine the preliminary regional site selection of concrete mixing plants based on the concrete engineering quantity required for the project and its distribution;

[0158] The module for determining the preliminary layout plan is used to determine the site suitable for setting up the concrete mixing plant in the region based on the preliminary regional site selection results and combined with the site conditions, and to preliminarily determine the layout plan of the concrete mixing plant;

[0159] The full cost calculation module is used to calculate the full cost including major temporary costs and land costs, supporting minor temporary project costs and material transportation costs based on the initially determined layout setting plan;

[0160] The layout scheme optimization module is used to adjust and optimize the layout setting scheme of the concrete mixing plant according to the cost calculation results.

[0161] It should be noted that for the detailed description of a railway engineering mixing station layout setting system based on a full-cost perspective provided in an embodiment of the present invention, reference can be made to the relevant description of a railway engineering mixing station layout setting method based on a full-cost perspective provided in an embodiment of the present application, which will not be repeated here.

[0162] Those skilled in the art will appreciate that all or part of the functions of the various methods in the above-mentioned embodiments can be implemented by hardware or by computer programs. When all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can be stored in a computer-readable storage medium, and the storage medium can include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to implement the above-mentioned functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the above-mentioned functions can be implemented. In addition, when all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can also be stored in a storage medium such as a server, another computer, disk, optical disk, flash disk or mobile hard disk, and can be downloaded or copied and saved in the memory of the local device, or the system of the local device is updated, and when the program in the memory is executed by the processor, all or part of the functions in the above-mentioned embodiments can be implemented.

[0163] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. A method for setting up a railway engineering mixing station layout based on a full cost perspective, characterized in that: The method comprises: Identify and avoid areas that are not suitable for setting up concrete mixing plants, and determine the preliminary regional site selection for the concrete mixing plants based on the concrete engineering quantity and distribution required for the project; Based on the preliminary regional site selection results and combined with site conditions, determine the site in the region that is suitable for setting up a concrete mixing plant, and preliminarily determine the layout and setting plan of the concrete mixing plant; Based on the preliminary layout plan, calculate the full cost including major temporary construction costs and land costs, supporting minor temporary construction costs and material transportation costs; According to the cost calculation results, adjust and optimize the layout and setting plan of the concrete mixing station.

2. A method for setting up a railway engineering mixing station layout based on a full cost perspective as claimed in claim 1, characterized in that: Identify and avoid areas that are not suitable for setting up concrete mixing plants, including: By investigating and analyzing the external environmental factors along the railway project, areas that are not suitable for setting up concrete mixing plants are determined and avoided.

3. A method for setting up a railway engineering mixing station layout based on a full cost perspective as claimed in claim 2, characterized in that: Combined with the concrete engineering quantity and its distribution required by the project, the preliminary regional site selection of the concrete mixing plant is determined, including: Calculate the concrete quantity of the project, including: estimating the concrete quantity based on the actual construction experience of the railway project site; or calculating the concrete quantity by referring to the statistical results of concrete quantity in the previous stage and adjusting the plan in combination with the actual situation in the current stage; According to the concrete engineering quantity and its distribution, the concrete mixing station is preliminarily sited in the region, including: when setting up the layout of the concrete mixing station, it should be inclined towards the places where the concrete engineering quantity is concentrated, and the places where the concrete engineering quantity is more dispersed should be considered for setting up in a comprehensive manner.

4. A method for setting up a railway engineering mixing plant layout based on a full cost perspective as claimed in claim 1, characterized in that: Based on the preliminary regional site selection results, combined with the site conditions, determine the site suitable for setting up the concrete mixing plant in the region, and preliminarily determine the layout and setting plan of the concrete mixing plant, including: Obtain site conditions through investigation, including topography, construction conditions of access lines to stations, water sources, power supply conditions, and land costs; Select areas with relatively flat terrain, convenient transportation, good construction water and power sources, and low land costs to set up concrete mixing plants; On the basis of meeting the supply radius requirements, the location and number of concrete mixing stations are preliminarily determined.

5. A method for setting up a railway engineering mixing plant layout based on a full cost perspective as claimed in claim 1, characterized in that: Calculate the temporary expenses and land cost, including: The calculation includes earthwork, retaining costs, station access line costs, temporary water supply facilities, and temporary power supply facilities costs; Investigate the type, unit price and number of surface attachments of temporary land at the proposed site, study the reclamation plan, and calculate the land cost of the concrete mixing station based on the service life of the temporary land.

6. A method for setting up a railway engineering mixing station layout based on a full cost perspective as claimed in claim 5, characterized in that: Calculate the temporary expenses and land cost, including: Analyze and calculate the daily peak concrete demand of each concrete mixing station in the layout plan; Calculate the design production capacity of different types of concrete mixing plants; Select equipment for each concrete mixing station based on the designed production capacity of different types of concrete mixing stations and the daily peak concrete demand of each concrete mixing station; Based on the equipment selection results of the concrete mixing station, further calculate the temporary expenses and land cost, including: earthwork, retaining costs, foundation treatment, hardened surface costs, equipment purchase and installation costs, drainage ditch masonry costs.

7. A method for setting up a railway engineering mixing station layout based on a full cost perspective as claimed in claim 1, characterized in that: Calculate the cost of supporting small temporary projects, including: The costs of small temporary projects include the costs of office, production, public housing and its supporting facilities within the concrete mixing station, the costs of small temporary housing and supporting facilities including earthwork, foundation treatment, hardened surface, masonry, and land use costs.

8. A method for setting up a railway engineering mixing plant layout based on a full cost perspective as claimed in claim 1, characterized in that: Calculate material transportation costs, including: Material transportation costs include the transportation costs of transporting raw materials to a concrete mixing station and the transportation costs of transporting finished concrete from a concrete mixing station to the construction site.

9. A method for setting up a railway engineering mixing plant layout based on a full cost perspective as claimed in claim 1, characterized in that: According to the cost calculation results, adjust and optimize the layout of the concrete mixing plant, including: On the premise of meeting the supply radius requirements and concrete demand, the layout and setting plan of the concrete mixing station is adjusted, and the cost calculation results before and after the plan adjustment are compared, and the plan with lower cost is selected first.

10. A railway engineering mixing station layout setting system based on the full cost perspective, characterized in that: The system comprises: The preliminary regional site selection module is used to determine and avoid areas that are not suitable for setting up concrete mixing plants, and determine the preliminary regional site selection of concrete mixing plants based on the concrete engineering quantity required for the project and its distribution; The module for determining the preliminary layout plan is used to determine the site suitable for setting up the concrete mixing plant in the region based on the preliminary regional site selection results and combined with the site conditions, and to preliminarily determine the layout plan of the concrete mixing plant; The full cost calculation module is used to calculate the full cost including major temporary costs and land costs, supporting minor temporary project costs and material transportation costs based on the initially determined layout setting plan; The layout scheme optimization module is used to adjust and optimize the layout setting scheme of the concrete mixing plant according to the cost calculation results.

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