Engineering cost data management system and method

Abstract

The invention discloses a project cost data management system and a project cost data management method, which relate to the technical field of project cost data of building construction, and are characterized in that project cost data of related projects are changed and input on a user management page of a project data system by using a data input and preprocessing module, and the project cost data are substituted by using a data management calculation module; calculating and outputting project initial cost CB, project adjustment cost TC and project final cost ZTC in sequence, outputting the change of project cost and an estimation result of project prediction completion based on the project final cost ZTC, and modifying and replacing project cost data of related projects by using a data input and preprocessing module according to current project requirements. According to the method, the data close relevance and accuracy of project cost data management and the efficiency of fitting the actual situation and the current project demand are improved, and the adaptability and flexibility of a project data system are enhanced, so that the purpose of dynamic cyclic feedback is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction cost data of building construction, and in particular to a construction cost data management system and method. Background Art

[0002] Project cost management plays an important role in the construction industry. It is a key link in ensuring project quality and controlling costs. With the rapid development of the construction industry and the intensification of market competition, traditional project cost management methods have been unable to meet the needs of modern project management. Therefore, with the help of computer-aided management, the development of project cost data management system has become an important means to improve the efficiency and accuracy of project cost management.

[0003] In the calculation of engineering cost, the existing system often stores data in an isolated database, lacking the consideration of the correlation and cyclical influence between data. This leads to the inability to fully consider the mutual influence between various factors when calculating the engineering cost, thus affecting the accuracy of the cost. In addition, the existing system mostly adopts a static calculation method, that is, it calculates according to fixed formulas and parameters, and cannot adapt to the changes in parameters in actual projects, which leads to a large deviation between the calculation results and the actual engineering cost. In addition, the existing system lacks sufficient flexibility when dealing with complex and changeable engineering cost issues. Once encountering special circumstances and parameter changes, the system often needs to be adjusted manually, which increases the workload and the risk of error. In addition, the existing system lacks a cyclic feedback mechanism and cannot automatically adjust and optimize parameters according to the calculation results, which limits the system's dynamic and optimization capabilities in engineering cost management. Summary of the invention

[0004] The purpose of the present invention is to provide a construction cost data management system and method, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides a method for managing construction cost data, and the specific implementation steps are as follows:

[0006] Step 1: Use the data input and preprocessing module to change and input the engineering cost data of the relevant project in the user management page of the engineering data system;

[0007] Step 2: Use the data management calculation module to substitute the engineering cost data, and calculate the output engineering preliminary cost CB, engineering adjustment cost TC and engineering final cost ZTC in sequence;

[0008] Step 3: Based on the final cost ZTC of the project, output the change in the project cost and the estimated completion result of the project;

[0009] Step 4: According to the current project requirements, and using the data input and preprocessing module, modify and replace the project cost data of the relevant project until the current project requirements are met;

[0010] Step 5: Use the data storage and query module to store and query the engineering cost data for each input and calculation output.

[0011] The present invention also provides the following engineering cost data management system, comprising:

[0012] The data management calculation module is used to substitute the engineering cost data, and calculate and output the preliminary cost CB, the adjusted cost TC and the final cost ZTC of the engineering in sequence;

[0013] Data input and preprocessing module, used to modify and replace the engineering cost data of related projects until the current engineering requirements are met;

[0014] Data storage and query module, used to store and query the engineering cost data of each input and calculation output;

[0015] Wherein, the data management calculation module includes determining the preliminary cost unit of the project, determining the adjusted cost unit of the project and determining the final adjusted cost unit of the project;

[0016] Current project requirements include project cost and the progress of project completion years.

[0017] Optionally, the devices used in the data input and preprocessing module include input devices of computer devices, routers, and switches;

[0018] The equipment used in the data management and calculation module includes a server and a client computer with computer equipment, which are used to run the engineering data system and calculate and analyze engineering cost data;

[0019] The devices used by the data storage and query module include storage devices of computer devices.

[0020] Optionally, the calculation formula for determining the preliminary cost unit of the project is as follows:

[0021]

[0022] ZJ=(CB frist -YC) / N;

[0023] YC=CB frist ×CL;

[0024] in:

[0025] CB is the preliminary cost of the project;

[0026] D is the tonnage of material;

[0027] DJ1 is the unit price of material per ton;

[0028] M is the project area;

[0029] MJ1 is the cost per square meter;

[0030] ZJ is the depreciation expense;

[0031] CB frist The first preliminary cost of the project, CB frist Reflects the initial cost CB of the current project that is put into construction and output for cost calculation;

[0032] YC is the estimated residual value;

[0033] CL is the residual value rate;

[0034] N is the useful life.

[0035] Optionally, the data management of the engineering data system generates inflation according to the change of the service life N, and the calculation formula of the inflation rate TPL is as follows:

[0036]

[0037] m is the number of years that the project has occurred, and m reflects the number of years that the current project has been carried out and has occurred up to now;

[0038] TPL i is the inflation rate in the i-th year, reflecting the inflation rate TPL calculated and output within the project’s duration m;

[0039] Based on the inflation rate TPL, the adjustment calculation formulas for the material price per ton DJ1 and the construction cost per square meter MJ1 under inflation are as follows:

[0040] DJ2 = DJ1 + DJ1 × TPL;

[0041] MJ2=MJ1-MJ1×TPL.

[0042] Optionally, the calculation formula for determining the engineering adjustment cost unit is as follows:

[0043]

[0044] in:

[0045] TC is the engineering adjustment cost;

[0046] DJ2 is the adjusted unit price per ton of material;

[0047] MJ2 is the adjusted cost per square meter.

[0048] Optionally, the calculation formula for determining the final adjusted cost unit of the project is as follows:

[0049]

[0050] in:

[0051] ZTC is the final cost of the project;

[0052] QCZ is the other cost percentage;

[0053] QZJ is other depreciation expense;

[0054] QN is the additional useful life, which reflects the additional period of years beyond the useful life N;

[0055] F is the material waste coefficient;

[0056] n is the total number of projects, which reflects the total number of completed construction projects with the same duration as N+QN;

[0057] F i is the material waste coefficient of the i-th project.

[0058] Optionally, the cost of the other expenses is calculated as follows:

[0059] QC=ZTC old ×G+SJ×SL;

[0060] QC is other cost;

[0061] ZTC old The final cost of the previous project;

[0062] G is the management fee rate;

[0063] SJ is the taxable amount;

[0064] SL is the tax rate;

[0065] The calculation formula of the other cost percentage QCZ is as follows:

[0066] QCZ=QC / ZTC old ;

[0067] The calculation formula of other depreciation expenses QZJ is as follows:

[0068] QZJ=QC frist ×ZJ×(QN / N);

[0069] QC frist For the first other cost of the project, QC fristIt reflects the first other cost QC output of cost calculation for the current project investment in construction.

[0070] Optionally, the management analysis based on the final cost ZTC of the project is as follows:

[0071] If the final cost of the project ZTC is compared with the final cost of the previous project ZTC old If it increases, it is considered that other depreciation expenses QZJ increase, the useful life N decreases, the project cost increases, and the project is completed ahead of schedule;

[0072] If the final cost of the project ZTC is compared with the final cost of the previous project ZTC old If there is a decrease, it is considered that other depreciation expenses QZJ decrease, the additional useful life QN increases, the project cost decreases, and the project is completed later.

[0073] Compared with the prior art, the present invention has the following beneficial effects:

[0074] 1. The present invention determines the preliminary cost unit of the project, determines the adjusted cost unit of the project and determines the final adjusted cost unit of the project, thereby realizing a close connection between data through the association and circular influence between parameters. Specifically, the result values ​​and related calculation parameters of the output preliminary cost CB and the adjusted cost TC of the project are introduced into the calculation of the adjusted cost TC of the project and the final cost ZTC of the project, and the historical data of the first and previous project costs are introduced into the calculation, which ensures the comprehensiveness and accuracy of the project cost data in the system and avoids the problem of data isolation.

[0075] 2. The present invention supports dynamic calculation for determining the preliminary cost unit of the project, determining the adjusted cost unit of the project and determining the final adjusted cost unit of the project, and can update the calculation results in real time according to changes in parameters, including inflation, other depreciation and additional years of use. This improves the adaptability of the engineering data system to changes in actual engineering costs, ensures the accuracy and reliability of the calculation results, and the engineering data system can handle complex and changeable engineering cost issues, and flexibly respond to various special situations by adjusting parameters and formulas, thereby reducing workload and error risks.

[0076] 3. The present invention realizes a circular feedback mechanism by determining the preliminary cost unit of the project, determining the adjusted cost unit of the project and determining the final adjusted cost unit of the project, so that the engineering data system can automatically adjust and optimize parameters according to the calculation results. This improves the dynamics and optimization capabilities of the engineering data system in engineering cost management and ensures continuous optimization and innovation of engineering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 This is the flow chart of the cost data management method for this project;

[0078] Figure 2 A schematic diagram of the current engineering requirements in this engineering data system;

[0079] Figure 3 It is a structural diagram of the data management and calculation module of the present invention;

[0080] Figure 4 This is a structural diagram of the project data system for annual progress data management. DETAILED DESCRIPTION

[0081] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0082] Regarding this engineering cost data management system, it is different from the existing engineering data system. The existing engineering data system lacks the consideration of the correlation and circular influence between data, cannot adapt to the situation of parameter changes in actual projects, and lacks sufficient flexibility when dealing with complex and changeable engineering cost problems. In addition, the existing engineering data system also lacks a circular feedback mechanism. This algorithm unit improves the close correlation and accuracy of data in engineering cost data management, and the efficiency of adapting to actual conditions and current engineering needs, enhances the adaptability and flexibility of the engineering data system, so as to achieve the purpose of dynamic circular feedback.

[0083] For example, see Figures 1 to 4 , this implementation provides a method for engineering cost data management, and the specific implementation steps are as follows:

[0084] Step 1: Use the data input and preprocessing module to change and input the engineering cost data of the relevant project in the user management page of the engineering data system;

[0085] Step 2: Use the data management calculation module to substitute the engineering cost data, and calculate the output engineering preliminary cost CB, engineering adjustment cost TC and engineering final cost ZTC in sequence;

[0086] Step 3: Based on the final cost ZTC of the project, output the change in the project cost and the estimated completion result of the project;

[0087] Step 4: According to the current project requirements, and using the data input and preprocessing module, modify and replace the project cost data of the relevant project until the current project requirements are met;

[0088] Step 5: Use the data storage and query module to store and query the engineering cost data input and calculated output each time;

[0089] The data management calculation module includes determining the preliminary cost unit of the project, determining the adjusted cost unit of the project, and determining the final adjusted cost unit of the project;

[0090] Current project requirements include project cost and the timeline for project completion;

[0091] The equipment used in the data input and preprocessing module includes input devices, routers, and switches of computer equipment;

[0092] The equipment used in the data management and calculation module includes a server with computer equipment and a client computer, which is used to run the engineering data system and calculate and analyze engineering cost data;

[0093] The devices used by the data storage and query module include storage devices of computer devices.

[0094] In this embodiment, the system, through the mutual cooperation of three algorithm units, jointly constructs a closely related and circularly feedback engineering data system, combining the three operation results of CB, TC and ZTC. Specifically, CB is the preliminary cost of the project, which provides a relatively accurate estimate of the preliminary cost of the project for the engineering data system by comprehensively considering the material cost, area cost and depreciation cost adjustment, and provides a basis for subsequent cost adjustment and optimization. TC is the engineering adjustment cost, which can adjust the preliminary cost for inflation to more accurately reflect the impact of market changes on the cost, and provide a more accurate basis for subsequent cost calculation. ZTC is the final cost of the project, which can provide an accurate estimate of the final cost of the project, and provide an important basis for the cost control and budget management of the project. The calculation result of ZTC can also affect the calculation feedback to CB and TC, forming a circular influence. Therefore, this design also ensures the dynamics and flexibility of the entire engineering cost data management system, so that the three algorithms of this system are closely related and each has a significant beneficial effect. The circular influence of ZTC on CB and TC further improves the accuracy and flexibility of the entire engineering cost data management system, and provides strong support for the smooth progress and cost control of the project.

[0095] See also Figures 1 to 4 , the calculation formula for determining the preliminary cost unit of the project is as follows:

[0096]

[0097] ZJ=(CB frist -YC) / N;

[0098] YC=CBfrist ×CL;

[0099] in:

[0100] CB is the preliminary cost of the project;

[0101] D is the tonnage of material;

[0102] DJ1 is the unit price of material per ton;

[0103] M is the project area;

[0104] MJ1 is the cost per square meter;

[0105] ZJ is the depreciation expense;

[0106] CB frist The first preliminary cost of the project, CB frist Reflects the initial cost CB of the current project that is put into construction and output for cost calculation;

[0107] YC is the estimated residual value;

[0108] CL is the residual value rate;

[0109] N is the useful life.

[0110] In this embodiment: First, the calculation part "D×DJ1+M×MJ1" in this algorithm unit calculates the direct cost in the preliminary cost CB of the project, including the material cost and the cost based on the project area. Specifically, "D×DJ1" represents the total material cost calculated based on the tonnage of materials and the price per ton of materials, and "M×MJ1" represents the area-based cost calculated based on the project area and the cost per square meter. As the main component of the preliminary cost CB of the project, this part directly reflects the direct cost of the project and is an important basis for preliminary cost evaluation. The calculation part calculates the adjustment of the initial cost by the depreciation expense ZJ based on the useful life N, where ZJ represents the depreciation expense. It represents the square root of the useful life N and is used to smooth the calculation of depreciation expense ZJ as a reduction to the preliminary cost of the project CB. This part of the calculation reflects the decrease in the value of the asset over time, thereby adjusting the preliminary cost;

[0111] The calculation of the total material cost product in this algorithm unit not only takes into account the cost of the material itself, but also implies the impact of material selection on cost. Specifically, choosing high-quality but expensive materials will increase costs, while choosing low-quality but cheap materials will increase maintenance costs. The calculation of the product based on area cost is directly related to the scale of the project, reflecting the impact of project size on cost. At the same time, the cost per square meter MJ1 also implies the cost efficiency of each link of design and construction. This calculation method of the calculation part takes into account the depreciation of assets over time and reflects the impact of time on costs. Through the square root function, the depreciation expense ZJ is more smoothly allocated to each year, avoiding sudden large depreciation;

[0112] The parameters in the unit for determining the preliminary cost of the project are adjusted according to the actual situation. This flexibility enables the preliminary cost of the project to more accurately reflect the actual situation. Specifically, when the price of materials changes, it is only necessary to adjust the unit price of materials per ton DJ1. When the project area and the cost per square meter change, it is only necessary to adjust the project area M and the cost per square meter MJ1.

[0113] The form of determining the preliminary cost unit of the project is concise and clear. You only need to substitute various parameters into the formula to calculate the preliminary cost CB of the project. This ease of operation can quickly and accurately complete the cost calculation, improve work efficiency, and the calculated output preliminary cost CB of the project is the basis for the subsequent determination of the project adjustment cost unit and the determination of the final adjustment cost unit of the project. Only by ensuring the accuracy of the preliminary cost CB of the project can the consistency and accuracy of subsequent calculations be ensured. Therefore, determining the preliminary cost unit of the project plays a vital role in the engineering data system.

[0114] See also Figures 1 to 4 , the calculation formula for determining the engineering adjustment cost unit is as follows:

[0115]

[0116] in:

[0117] TC is the engineering adjustment cost;

[0118] DJ2 is the adjusted unit price per ton of material;

[0119] MJ2 is the adjusted cost per square meter.

[0120] In this embodiment, first The calculation part calculates the adjustment of the preliminary cost due to inflation. The preliminary cost of the project CB represents the preliminary cost, and TPL represents the inflation rate. After converting it into a decimal, it is added to 1 and then multiplied by the preliminary cost of the project CB to obtain the adjusted cost. This calculation part reflects the impact of inflation on the project cost and is an important part of the adjustment cost calculation. The impact of the adjustment of material prices and cost per square meter on the increase or decrease of costs is calculated, where "D×(DJ1-DJ2)" represents the increase or decrease of costs after the material price adjustment, where DJ2 is the adjusted material price. Indicates the increase or decrease in cost after the price adjustment per square meter, where MJ2 is the adjusted price per square meter. This calculation part reflects the impact of price adjustment on the adjusted cost, which helps to more accurately evaluate the project cost;

[0121] This algorithm unit determines the engineering adjustment cost unit taking into account the inflation rate TPL and the adjustment of material prices and the cost per square meter. This adjustment method enables the engineering adjustment cost to reflect actual market changes and is dynamic. Specifically, when the inflation rate TPL rises, the material price and the cost per square meter will also rise accordingly, thereby increasing the engineering adjustment cost TC. By introducing the inflation rate TPL and price adjustment factors, the engineering adjustment cost unit can more accurately calculate the engineering adjustment cost TC. This accuracy is not only reflected in the numerical value, but also in the prediction of the cost change trend. Specifically, when the market fluctuates, the engineering adjustment cost unit can respond quickly and calculate the corresponding adjustment cost;

[0122] The engineering adjustment cost TC is the basis for the subsequent calculation of the final engineering adjustment cost unit. Only by ensuring the accuracy of the engineering adjustment cost TC can the consistency and accuracy of subsequent calculations be ensured. Therefore, determining the engineering adjustment cost unit also plays a vital role in the engineering data system.

[0123] See also Figures 1 to 4 , the calculation formula for determining the final adjusted cost unit of the project is as follows:

[0124]

[0125] in:

[0126] ZTC is the final cost of the project;

[0127] QCZ is the other cost percentage;

[0128] QZJ is other depreciation expense;

[0129] QN is the additional useful life, which reflects the additional period of years beyond the useful life N;

[0130] F is the material waste coefficient;

[0131] n is the total number of projects, which reflects the total number of completed construction projects with the same duration as N+QN;

[0132] F i is the material waste coefficient of the i-th project;

[0133] The cost of other expenses is calculated as follows:

[0134] QC=ZTC old×G+SJ×SL;

[0135] QC is other cost;

[0136] ZTC old The final cost of the previous project;

[0137] G is the management fee rate;

[0138] SJ is the taxable amount;

[0139] SL is the tax rate;

[0140] The calculation formula of other fee percentage QCZ is as follows:

[0141] QCZ=QC / ZTC old ;

[0142] The calculation formula for other depreciation expenses QZJ is as follows:

[0143] QZJ=QC frist ×ZJ×(QN / N);

[0144] QC frist For the first other cost of the project, QC frist It reflects the first other cost QC output of cost calculation for the current project investment in construction.

[0145] In this embodiment, the algorithm unit is first based on The calculation part calculates the adjustment of other costs to the adjusted cost. The other cost percentage QCZ is converted to a decimal and added to 1, and then multiplied by the project adjustment cost TC to obtain the adjusted cost, which reflects the impact of other costs on the final cost except materials, area and inflation. The calculation part calculates the adjustment to the final cost due to the additional useful life QN and other depreciation expenses QZJ, It represents the square root of the sum of the useful life N and the additional useful life QN, and is used to smooth the calculation of other depreciation expense QZJ as a reduction to the final cost of the project ZTC. This part of the calculation reflects the additional reduction in the value of the asset over time, thereby adjusting the final cost;

[0146] The final adjusted cost unit of the project in this algorithm unit comprehensively considers other cost percentage QCZ, other depreciation cost QZJ, additional useful life QN, adjusted material price per ton DJ2 and material waste coefficient F. This comprehensive consideration enables the final cost of the project to more accurately reflect the actual situation. Specifically, when other cost QC increases, only the other cost percentage QCZ needs to be adjusted. When material waste increases, only the material waste coefficient FW needs to be adjusted.

[0147] By introducing additional useful life QN and other depreciation expense QZJ factors, the final cost ZTC of the project can be more accurately calculated when determining the final adjusted cost unit of the project. This accuracy provides a more scientific basis for resource allocation.

[0148] The calculation results in the final adjusted cost unit of the project can in turn affect the parameters in the preliminary cost unit and the adjusted cost unit of the project. This cyclical influence makes the entire project cost data management system more dynamic and flexible. Specifically, when the final cost ZTC of the project changes, it can be traced back to the parameters in the preliminary cost unit and the adjusted cost unit of the project and make adjustments to ensure the accuracy and consistency of the entire system.

[0149] See also Figures 1 to 4 , the management analysis based on the final project cost ZTC is as follows:

[0150] If the final cost of the project ZTC is compared with the final cost of the previous project ZTC old If it increases, it is considered that other depreciation expenses QZJ increase, the useful life N decreases, the project cost increases, and the project is completed ahead of schedule;

[0151] If the final cost of the project ZTC is compared with the final cost of the previous project ZTC old If there is a decrease, it is considered that other depreciation expenses QZJ decrease, the additional useful life QN increases, the project cost decreases, and the project is completed later.

[0152] In this embodiment, the increase of other depreciation expenses QZJ based on this algorithm unit means that in addition to normal depreciation expenses ZJ, there are additional depreciation expenses to be considered. This is due to the rapid obsolescence of assets and the increase in maintenance costs caused by technological progress. The increase of other depreciation expenses QZJ will directly lead to an increase in the final cost of the project ZTC. Because the depreciation expense ZJ is part of the cost, the increase of other depreciation expenses QZJ will increase the final cost of the project ZTC, which will prompt the engineering data system to re-evaluate the budget and cost-effectiveness of the project. If the engineering data system believes that the cost is too high, it will adjust the preliminary cost of the project CB and the engineering adjustment cost TC to reduce the total cost;

[0153] Among them, although the change of other depreciation expenses QZJ does not directly affect the inflation rate TPL in determining the project adjustment cost unit, the increase in the final cost of the project ZTC will lead to changes in the expectation of future inflation, because the increase in costs may trigger price increases;

[0154] If the engineering data system reduces the final cost of the project ZTC by adjusting the preliminary cost of the project CB and the adjusted cost of the project TC, these adjustments will in turn affect the depreciation expense ZJ, but please note that the increase in other depreciation expense QZJ will not usually directly affect the calculation of ZJ unless the increase in other depreciation expense QZJ changes the book value and useful life of the asset;

[0155] As for the increase of additional useful life QN, it means that the useful life of the asset is extended, which is due to technological progress and maintenance work factors. The increase of additional useful life QN usually reduces the annual depreciation expense ZJ, but the total depreciation expense remains unchanged, which may prompt the engineering data system to re-evaluate the cost-effectiveness and life cycle cost of the project. In addition, the increase of additional useful life QN does not directly affect TPL, but if it affects the life cycle cost of the project, it will indirectly affect the expectation of future inflation. The increase of additional useful life QN will affect the calculation of depreciation expense because the depreciation rate is usually inversely proportional to the useful life. In addition, if the increase of additional useful life QN leads to a reduction in total cost, the engineering data system will consider adjusting the engineering preliminary cost CB and the engineering adjustment cost TC to reflect these changes;

[0156] In summary, the changes in other depreciation costs QZJ and additional useful life QN have an important impact on the construction cost management system. They not only directly affect the calculation of the final cost ZTC of the total cost project, but also affect other parameters and the final result through a circular feedback mechanism. Therefore, when conducting construction cost management, it is necessary to fully consider the interaction and mutual influence between various parameters;

[0157] This embodiment continuously corrects and adjusts the parameters in the preliminary cost unit of the project by determining the cyclical impact of the final adjusted cost unit of the project. This correction and adjustment is not only reflected in the numerical value, but also in the in-depth understanding of the cost structure and change trend. The cyclical impact of the final adjusted cost unit of the project makes the entire project cost data management system more dynamic and flexible. This dynamicity and flexibility provide the project data system with more accurate and comprehensive cost information, which helps to optimize decision-making and resource allocation. Specifically, when the project data system needs to formulate a cost control strategy, it can formulate a strategy based on the final cost of the project calculated by determining the final adjusted cost unit of the project and adjust the parameters in the preliminary cost unit of the project to achieve the target cost. By determining the cyclical impact of the final adjusted cost unit of the project, problems and deficiencies in the project cost data management system can be continuously discovered and improved. This discovery and improvement is not only reflected in the calculation formula itself, but also in the optimization and improvement of the entire system.

[0158] When other depreciation costs QZJ or additional useful life QN change, through the circular feedback of the formula chain, the system can quickly reflect the impact of these changes on the key parameters of total cost engineering final cost ZTC, unit cost engineering preliminary cost CB, cost adjustment coefficient engineering adjustment cost TC and inflation rate TPL. This precise feedback mechanism helps the engineering data system to more accurately evaluate the cost-effectiveness and feasibility of the project, so as to make more informed decisions. The circular feedback mechanism allows the engineering data system to adjust its strategy in time when facing parameter changes to adapt to the new market environment and project needs;

[0159] In addition, the feedback loop mechanism can detect potential risk factors in a timely manner. Specifically, when the other depreciation expenses QZJ suddenly increase and the additional useful life QN unexpectedly decreases, once these risk factors are discovered, the engineering data system will immediately take measures to intervene to avoid further expansion of the risk.

[0160] To sum up, determining the preliminary cost unit of the project, determining the adjusted cost unit of the project, and determining the final adjusted cost unit of the project; each has a profound beneficial effect, and the cyclical influence of determining the final adjusted cost unit of the project on determining the preliminary cost unit of the project further improves the accuracy and flexibility of the entire engineering cost data management system. This circular feedback influence has a significant beneficial effect in the engineering cost management system. It improves the accuracy and flexibility of decision-making, optimizes resource allocation and cost control, enhances the project's risk resistance, and promotes continuous improvement and innovation of the project. Therefore, when conducting engineering cost management, the advantages of the circular feedback mechanism should be fully utilized to achieve the maximum benefits of the project.

[0161] For example 2, please refer to Figures 1 to 4 The data management of the engineering data system generates inflation according to the change of the service life N. The calculation formula of the inflation rate TPL is as follows:

[0162]

[0163] m is the number of years that the project has occurred, and m reflects the number of years that the current project has been carried out and has occurred up to now;

[0164] TPL i is the inflation rate in the i-th year, reflecting the inflation rate TPL calculated and output within the project’s duration m;

[0165] Based on the inflation rate TPL, the adjustment calculation formula for the unit price DJ1 per ton of material and the cost MJ1 per square meter under inflation is as follows:

[0166] DJ2 = DJ1 + DJ1 × TPL;

[0167] MJ2=MJ1-MJ1×TPL.

[0168] In this embodiment, the project cost refers to all the costs required for the construction of the project, including building materials, labor, equipment, and technology, while inflation refers to the phenomenon that the price level in an economy continues to rise over a certain period of time. When inflation occurs, the purchasing power of money decreases and prices generally rise, which has a direct impact on the project cost. This project data system calculates and outputs the inflation rate TPL that is closely related to the cost of this construction project based on the current inflation status and the inflation rate TPL that has been calculated and output within the project's years m. Based on the current inflation rate TPL, the unit price DJ1 per ton of materials and the cost MJ1 per square meter are adjusted for inflation, further ensuring the close association of data and the flexible adjustment adaptability of this project data system.

[0169] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction cost data management system, characterized in that: include: The data management calculation module is used to substitute the engineering cost data, and calculate and output the preliminary cost CB, the adjusted cost TC and the final cost ZTC of the engineering in sequence; Data input and preprocessing module, used to modify and replace the engineering cost data of related projects until the current engineering requirements are met; Data storage and query module, used to store and query the engineering cost data of each input and calculation output; Wherein, the data management calculation module includes determining the preliminary cost unit of the project, determining the adjusted cost unit of the project and determining the final adjusted cost unit of the project; Current project requirements include project cost and the progress of project completion years.

2. A construction cost data management system according to claim 1, characterized in that: The equipment used in the data input and preprocessing module includes input equipment, routers, and switches of computer equipment; The equipment used in the data management and calculation module includes a server and a client computer with computer equipment, which are used to run the engineering data system and calculate and analyze engineering cost data; The devices used by the data storage and query module include storage devices of computer devices.

3. The construction cost data management system according to claim 2, characterized in that: The calculation formula for determining the preliminary cost unit of the project is as follows: ZJ=(CB frist -YC) / N; YC=CB frist ×CL; in: CB is the preliminary cost of the project; D is the tonnage of material; DJ1 is the unit price of material per ton; M is the project area; MJ1 is the cost per square meter; ZJ is the depreciation expense; CB frist The first preliminary cost of the project, CB frist Reflects the initial cost CB of the current project that is put into construction and output for cost calculation; YC is the estimated residual value; CL is the residual value rate; N is the useful life.

4. The construction cost data management system according to claim 3, characterized in that: The data management of the engineering data system generates inflation according to the change of the service life N. The calculation formula of the inflation rate TPL is as follows: m is the number of years that the project has occurred, and m reflects the number of years that the current project has been carried out and has occurred up to now; TPL i is the inflation rate in the i-th year, reflecting the inflation rate TPL calculated and output within the project’s duration m; Based on the inflation rate TPL, the adjustment calculation formulas for the material price per ton DJ1 and the construction cost per square meter MJ1 under inflation are as follows: DJ2 = DJ1 + DJ1 × TPL; MJ2=MJ1-MJ1×TPL.

5. The construction cost data management system according to claim 4, characterized in that: The calculation formula for determining the engineering adjustment cost unit is as follows: in: TC is the engineering adjustment cost; DJ2 is the adjusted unit price per ton of material; MJ2 is the adjusted cost per square meter.

6. A construction cost data management system according to claim 5, characterized in that: The calculation formula for determining the final adjusted cost unit of the project is as follows: in: ZTC is the final cost of the project; QCZ is the other cost percentage; QZJ is other depreciation expense; QN is the additional useful life, which reflects the additional period of years beyond the useful life N; F is the material waste coefficient; n is the total number of projects, which reflects the total number of completed construction projects with the same duration as N+QN; F i is the material waste coefficient of the i-th project.

7. A construction cost data management system according to claim 6, characterized in that: The cost of the other expenses is calculated as follows: QC=ZTC old ×G+SJ×SL; QC is other cost; ZTC old The final cost of the previous project; G is the management fee rate; SJ is the taxable amount; SL is the tax rate; The calculation formula of the other cost percentage QCZ is as follows: QCZ=QC / ZTC old 4 The calculation formula of other depreciation expenses QZJ is as follows: QZJ=QC frist ×ZJ×(QN / N); QC frist For the first other cost of the project, QC frist It reflects the first other cost QC output of cost calculation for the current project investment in construction.

8. The construction cost data management system according to claim 7, characterized in that: The management analysis based on the final cost ZTC of the project is as follows: If the final cost of the project ZTC is compared with the final cost of the previous project ZTC old If it increases, it is considered that other depreciation expenses QZJ increase, the useful life N decreases, the project cost increases, and the project is completed ahead of schedule; If the final cost of the project ZTC is compared with the final cost of the previous project ZTC old If there is a decrease, it is considered that other depreciation expenses QZJ decrease, the additional useful life QN increases, the project cost decreases, and the project is completed later.

9. The management method of a construction cost data management system according to claim 1, characterized in that: The specific implementation steps are as follows: Step 1: Use the data input and preprocessing module to change and input the engineering cost data of the relevant project in the user management page of the engineering data system; Step 2: Use the data management calculation module to substitute the engineering cost data, and calculate the output engineering preliminary cost CB, engineering adjustment cost TC and engineering final cost ZTC in sequence; Step 3: Based on the final cost ZTC of the project, output the change in the project cost and the estimated completion result of the project; Step 4: According to the current project requirements, and using the data input and preprocessing module, modify and replace the project cost data of the relevant project until the current project requirements are met; Step 5: Use the data storage and query module to store and query the engineering cost data for each input and calculation output.

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