CN119721630A - Dynamic management method, system, medium and equipment for the whole process of construction cost - Google Patents
Dynamic management method, system, medium and equipment for the whole process of construction cost Download PDFInfo
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Abstract
A dynamic management method, system, medium and equipment for the whole process of construction cost relate to the technical field of construction management. The method comprises the steps of determining a target sub-plan corresponding to a current stage of a building project, wherein the building project comprises a plurality of stages, each stage corresponds to one sub-plan, determining key cost indexes associated with the current stage based on the target sub-plan, obtaining actual cost data of the current stage, determining abnormal indexes with cost deviation based on the actual cost data and the key cost indexes, and adjusting the sub-plans corresponding to the stages in the building project based on the abnormal indexes to obtain new sub-plans corresponding to the stages. By implementing the technical scheme provided by the application, the abnormal cost condition in the building project can be timely found and adjusted, and the overall management effect on the building project is improved.
Description
Technical Field
The application relates to the technical field of building management, in particular to a method, a system, a medium and equipment for dynamic management of the whole process of building cost.
Background
As the scale of construction projects is continuously enlarged and the complexity is continuously improved, the importance of construction cost management is increasingly highlighted. The goal of construction cost management is to reasonably control and optimize construction cost and realize maximization of investment benefit on the premise of ensuring engineering quality.
At present, the construction engineering cost management mainly adopts a staged management mode, and a manager periodically collects actual cost data in the construction process of each construction stage for comparison and analysis, and adopts corresponding adjustment measures when the cost is found to exceed the expected cost. However, since engineering projects often face a number of unpredictable situations during actual construction, such as market fluctuations in raw material prices and labor costs, the manufacturing costs deviate from the budget. These factors often have burstiness and uncertainty, and conventional management modes are difficult to discover and adjust in time when coping with these complex situations, resulting in poor overall management of the building project.
Disclosure of Invention
The application provides a dynamic management method for the whole construction cost process, which can timely find out and adjust abnormal construction cost conditions in a construction project and improve the overall management effect on the construction project.
In a first aspect, the present application provides a method for dynamic overall process management of construction costs, the method comprising:
determining a target sub-plan corresponding to a current stage of a building project, wherein the building project comprises a plurality of stages, and each stage corresponds to one sub-plan;
determining key cost indexes associated with the current stage based on the target sub-plan;
Acquiring actual cost data of the current stage, and determining an abnormal index with cost deviation based on the actual cost data and the key cost index;
And adjusting the sub-plans corresponding to each stage in the building project based on the abnormal indexes to obtain new sub-plans corresponding to each stage.
By adopting the technical scheme, the systematic decomposition of the cost management is realized by determining the target sub-plan corresponding to the current stage of the building project, then the key cost index of the current stage is determined based on the target sub-plan, the accurate identification of the management key is realized, a definite reference standard is provided for the cost management, the actual cost data is acquired, the abnormal index with the cost deviation is determined, a dynamic cost monitoring mechanism is established, and finally the sub-plans of each stage are adjusted based on the abnormal index, so that the abnormal cost condition in the building project can be found in time and adjusted, and the overall management effect on the building project is improved.
Optionally, the determining the target sub-plan corresponding to the current stage of the building project includes:
Acquiring construction drawings and technical requirements at the current stage, and extracting engineering component characteristics and construction process requirements;
determining the engineering quantity of the current stage according to the engineering component characteristics and the construction process requirements;
Calculating the project cost of the current stage according to the project quantity and the current market price;
Determining a cost control standard of the current stage according to the engineering cost quota standard and the implementation condition;
And integrating the project cost and the cost control standard into a target sub-plan of the current stage.
Optionally, the determining, based on the target sub-plan, the key cost index associated with the current stage includes:
extracting the sub-project cost data in the target sub-plan;
determining a cost constituent based on the itemized engineering cost data;
determining key monitoring items according to the manufacturing cost components;
setting a target building value and an early warning value of each key monitoring item;
And determining the target manufacturing value and the early warning value of each key monitoring project as key manufacturing cost indexes.
Optionally, the determining, based on the actual cost data and the key cost index, an abnormal index with a cost deviation includes:
Extracting actual cost data and actual engineering quantity of each key monitoring project;
Acquiring target building values and target engineering quantities of key monitoring projects from the key cost indexes;
calculating the cost deviation rate of the actual cost data and the target cost value and the engineering quantity deviation rate of the actual engineering quantity and the target engineering quantity respectively;
Calculating a comprehensive deviation value based on the cost deviation rate and the engineering quantity deviation rate;
And comparing the comprehensive deviation value with a corresponding early warning value, and determining an important monitoring item exceeding the early warning value as an abnormal index.
Optionally, the adjusting the sub-plan corresponding to each stage in the building project based on the abnormality index to obtain a new sub-plan corresponding to each stage includes:
calculating the influence degree of the abnormal index, and judging whether the sub-plan at the current stage can eliminate the influence of the abnormal index or not based on the influence degree;
If the sub-plan of the current stage can not eliminate the influence of the abnormal index, analyzing the association degree of the abnormal index and each subsequent stage after the current stage;
determining a stage range to be adjusted based on the association degree;
And determining a new sub-plan to be adjusted for each subsequent stage in the stage range.
Optionally, the determining the stage range to be adjusted based on the association degree includes:
Analyzing influence chains of abnormal indexes on each subsequent stage after the current stage to obtain initial influence coefficients of each subsequent stage;
calculating the influence transfer intensity between each subsequent stage based on the initial influence coefficient;
determining the key stage affected in each subsequent stage and the accumulated impact value according to the impact transfer intensity;
determining the comprehensive influence degree of each key stage by combining the accumulated influence values;
and generating a stage range which needs to be adjusted based on each key stage of which the comprehensive influence degree exceeds the influence degree threshold.
Optionally, the method further comprises:
calculating the adjustment amplitude of the new sub-plan corresponding to each stage, and generating an adjustment intensity distribution map;
Identifying a phase node with abnormal adjustment amplitude based on the adjustment intensity distribution map;
And establishing constraint conditions of the stage nodes, and performing secondary optimization on the new sub-plans of each stage according to the constraint conditions to obtain optimized sub-plans.
In a second aspect of the application there is provided a building cost overall process dynamic management system, the system comprising:
The plan determining module is used for determining a target sub-plan corresponding to the current stage of the building project, the building project comprises a plurality of stages, and each stage corresponds to one sub-plan;
The index determining module is used for determining key cost indexes associated with the current stage based on the target sub-plan;
The abnormality determining module is used for acquiring actual cost data of the current stage and determining an abnormality index with cost deviation based on the actual cost data and the key cost index;
And the plan adjustment module is used for adjusting the sub-plans corresponding to each stage in the building project based on the abnormal indexes to obtain new sub-plans corresponding to each stage.
In a third aspect the application provides a computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the above-described method steps.
In a fourth aspect the application provides an electronic device comprising a processor and a memory, wherein the memory stores a computer program adapted to be loaded by the processor and to perform the above-mentioned method steps.
In summary, one or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
The application realizes systematic decomposition of the cost management by determining the target sub-plan corresponding to the current stage of the building project, then determines the key cost index of the current stage based on the target sub-plan, realizes accurate identification of management key points, provides clear reference standard for the cost management, acquires actual cost data and determines the abnormal index with cost deviation, establishes a dynamic cost monitoring mechanism, and finally adjusts the sub-plans of each stage based on the abnormal index, thereby timely finding and adjusting the abnormal cost condition in the building project and improving the overall management effect of the building project.
Drawings
FIG. 1 is a schematic flow chart of a dynamic management method for the whole process of construction cost according to an embodiment of the application;
FIG. 2 is a schematic block diagram of a dynamic management system for the whole process of construction cost according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Reference numerals illustrate 300, electronic devices, 301, processors, 302, communication buses, 303, user interfaces, 304, network interfaces, 305, memories.
Detailed Description
In order that those skilled in the art will better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments.
In describing embodiments of the present application, words such as "for example" or "for example" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "such as" or "for example" in embodiments of the application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "or" for example "is intended to present related concepts in a concrete fashion.
In the description of embodiments of the application, the term "plurality" means two or more. For example, a plurality of systems means two or more systems, and a plurality of screen terminals means two or more screen terminals. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating an indicated technical feature. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless expressly specified otherwise.
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments.
Referring to fig. 1, a flow chart of a dynamic management method for the whole process of construction cost is specifically provided, the method can be implemented by a computer program, can be implemented by a single chip microcomputer, can also be operated on a dynamic management system for the whole process of construction cost, the computer program can be integrated in a computer device, can also be operated as an independent tool application, and specifically comprises steps 10 to 40, and the steps are as follows:
and 10, determining a target sub-plan corresponding to the current stage of the building project, wherein the building project comprises a plurality of stages, and each stage corresponds to one sub-plan.
Building projects in embodiments of the present application refer to building projects requiring cost management that are divided from start to finish into a plurality of sequential construction stages, including but not limited to foundation engineering stages, main structure construction stages, finishing engineering stages, etc., each stage having relatively independent construction content and cost objectives.
The current stage refers to a specific stage of the construction project in construction in the embodiment of the application, and the stage has definite construction drawings, technical requirements and cost control targets and is an object stage of real-time cost management and monitoring.
The target sub-plan is a cost control plan formulated for the current stage in the building project by a pointer, and the plan comprises the contents of project cost data, cost control reference and the like of the stage. The target sub-plan is a cost control scheme formulated by combining engineering cost quota standards based on engineering component characteristics, construction process requirements, engineering quantity, current market price and other factors.
Specifically, in the implementation process of the building engineering, in order to realize accurate cost control, a specific stage where the current construction is located and a corresponding target sub-plan thereof need to be defined first. Because building projects are generally longer in span, construction contents and manufacturing cost characteristics of different stages are remarkably different, the whole project is divided into a plurality of stages, and sub-plans are manufactured respectively. When determining the target sub-plan corresponding to the current stage, firstly, the construction drawing and the technical requirement of the current stage are required to be acquired, and the engineering component characteristics and the construction process requirement are extracted from the construction drawing and the technical requirement. For example, in the construction stage of the main structure, it is required to analyze the characteristics of the structural member, such as the dimension specification, the arrangement requirement of the reinforcing steel bars, the strength grade of the concrete, and the like, and the technological requirements of the formwork support, the reinforcing steel bar binding, the concrete pouring, and the like. Based on the characteristics and the requirements, the engineering quantity of the current stage, such as concrete quantity, reinforcing steel bar quantity and the like, can be accurately calculated. And then, calculating the cost data of each sub-project in the current stage by combining the price information of various materials, manpower and machinery in the current market. Meanwhile, the construction cost rating standard is required to be consulted, and the construction cost control standard is determined by combining the specific implementation conditions of projects, such as construction site conditions, climate characteristics and the like. And finally, integrating the project cost and the cost control standard to form a target sub-plan of the current stage.
On the basis of the above embodiment, as an optional embodiment, the step of determining the target sub-plan corresponding to the current stage of the building project may further include the steps of:
And 101, acquiring a construction drawing and technical requirements at the current stage, and extracting characteristics of engineering components and construction process requirements.
Specifically, the construction drawing comprises engineering drawings such as a building plan, a detailed structure drawing, an equipment layout drawing and the like, the technical requirements comprise technical files such as construction specifications, quality standards, acceptance regulations and the like, and after the construction drawing and the technical requirements are obtained, the characteristics of engineering components and the construction process requirements are required to be extracted in an important way. Taking the construction stage of the main structure as an example, the engineering member features comprise geometric parameters such as the length, the height and the thickness of a wall body, the span and the thickness of a floor slab, the section size and the height of a column and material parameters such as the strength grade of concrete and the type of steel bars. The construction process requirements comprise technical specifications of concrete construction links such as a formwork supporting mode, a steel bar binding requirement, a concrete pouring process, a maintenance requirement and the like. And identifying the type and the basic size of the component in the construction drawing, and checking and supplementing the identification result by a manager according to the construction process requirement to ensure that the extracted characteristic data is accurate and complete. For example, for the construction of concrete structures, the concrete strength requirements of different components, material loss which may occur during the construction process, and the like need to be considered.
And 102, determining the engineering quantity at the current stage according to the characteristics of the engineering component and the construction process requirements.
Specifically, the engineering quantity of the current stage can be calculated by adopting corresponding calculation rules for different types of components. For example, the concrete volume is calculated according to the geometric dimension of the component, the construction loss coefficient is considered, the steel bar volume is calculated according to the reinforcement ratio and the component dimension, and the actual volume is determined by combining the construction process requirement. In this way, a detailed engineering quantity list including the amount of earth excavation, the amount of concrete, the amount of reinforcing bars, the area of the form, etc. can be obtained.
Step 103, calculating the project cost of the current stage based on the project quantity and the current market price.
In particular, there is a need to obtain material, labor and mechanical price information currently on the market. Taking the construction stage of the main structure as an example, market quotations of main materials such as reinforcing steel bars, concrete, templates and the like, and labor cost standards of constructors such as woodworkers, reinforcing steel bar workers, concrete and the like are required to be collected, and meanwhile, the renting cost or the using cost of large-scale machines such as tower cranes, concrete pump trucks and the like are also required to be considered. In order to ensure the accuracy of the price information, the price data can be obtained through various ways of building material market research, price inquiry price comparison, historical data analysis and the like. After the price information is obtained, the price information is combined with the determined engineering quantity data, and the manufacturing cost of each sub-engineering is calculated. In the calculation process, characteristics of different sub-projects need to be considered, for example, the construction cost calculation of the concrete sub-projects needs to comprise a plurality of components such as material cost, labor cost, mechanical cost, transportation cost and the like. In this way, a detailed project cost list including foundation projects, main body structures, finishing projects, and the like can be obtained.
And 104, determining a cost control standard of the current stage according to the engineering cost quota standard and the implementation condition.
Specifically, when determining the cost control reference, reference to the engineering cost rating standard is required, and reasonable adjustment is performed in combination with the specific implementation conditions of the project. Engineering cost rating criteria typically include the manual, material, mechanical, etc. consumption rating of various types of projects, as well as corresponding pricing methods. When the standards are used, the influence of factors such as climate conditions, site conditions, traffic conditions and the like on the construction environment characteristics of the project site on the cost is considered. For example, cold-proof and heat-insulating measures are required to be taken into consideration in cold-region construction, and an increase in material transportation cost is required to be taken into consideration in construction in inconvenient traffic regions.
Step 105, integrating the project cost and the cost control standard into a target sub-plan of the current stage.
Specifically, the calculated project cost and the determined cost control standard are integrated to form a target sub-plan of the current stage.
And 20, determining key cost indexes associated with the current stage based on the target sub-plan.
The key cost index refers to core monitoring data having an important influence on the construction project cost in the embodiment of the application, and the core monitoring data comprise, but are not limited to, main material unit price, labor cost unit price, mechanical use cost unit price, project comprehensive unit price and the like.
Specifically, the construction cost composition of each sub-project in the current stage and the proportion of the construction cost composition in the total construction cost are analyzed. Taking the construction stage of the main structure as an example, it can be found by analyzing the construction cost data of the sub-projects of the target, the construction cost of the concrete project and the reinforcement project generally occupies a large proportion. Therefore, the cost index such as the material unit price, the labor cost unit price and the like in the two sub-projects needs to be paid attention as a key cost index. Secondly, factors which are liable to cause price fluctuation or market supply and demand change in the construction process need to be considered. For example, the use cost of large-scale machinery may fluctuate with market demand, so the use cost price of main machinery such as tower cranes, concrete pump trucks and the like should also be included in the key cost index range. Meanwhile, for some materials or cost items with low cost ratio but large price fluctuation, such as templates and turnover use fees thereof, the related indexes of the templates are required to be determined as key cost indexes. In the process of determining the key cost indexes, the items and links most prone to cost abnormality in different stages can be identified through statistical analysis of historical item data, so that the key cost indexes can be determined in a targeted manner.
On the basis of the above embodiment, as an alternative embodiment, the step of determining the key cost index associated with the current stage based on the target sub-plan may further include the steps of:
step 201, extracting the subentry engineering cost data in the target sub-plan.
Specifically, the engineering content in the current stage is classified and arranged according to the construction process and the pricing characteristics. Taking the construction stage of the main structure as an example, the engineering content can be divided into concrete engineering, reinforced bar engineering, template engineering and other engineering. The cost data of each sub-project is extracted, including the total cost, the comprehensive unit price and various cost components of the sub-project. In the extraction process, the cost management software can be adopted to conduct data analysis on the target sub-plan, and the cost data list of each project is automatically generated.
And 202, determining the construction cost constituent elements based on the sub-project construction cost data.
Specifically, the construction cost of each sub-project is decomposed, and the main components are identified. For example, the construction cost of concrete engineering includes concrete material cost, pouring labor cost, pumping machinery cost, etc., and the reinforcement engineering includes reinforcement material cost, processing cost, installation labor cost, etc. Through the decomposition analysis, the internal structure of each sub-project cost can be clearly displayed, and the ratio of different elements in the total cost can be calculated.
And 203, determining an important monitoring project according to the construction cost components.
Specifically, when determining the important monitoring item, the importance and the change risk of the construction cost constituent elements need to be comprehensively considered, and the main monitoring object is determined according to the construction cost proportion, for example, when the occupation of the reinforcing steel bar material cost in the total construction cost is found to be relatively large, the reinforcing steel bar material cost is listed as the important monitoring item. Secondly, considering market fluctuation factors, even if the cost ratio of certain elements is not high, if the price fluctuation is frequent or large, important monitoring range is also needed to be included. For example, the wages of professional constructors may vary greatly with the market supply and demand relationship, so the related labor cost should also be used as an important monitoring project.
And 204, setting target building values and early warning values of all key monitoring projects.
Specifically, when the target price is set, reasonable determination needs to be performed by taking the cost data in the target sub-plan as a reference and combining market price trend and project actual conditions. Taking the steel bar engineering as an example, the target manufacturing value needs to be set by considering a plurality of factors such as the change rule of the steel market price, the regional difference of the transportation cost, the construction process requirement and the like. Specifically, the target unit price of the reinforcing steel bar material can be determined by analyzing historical price data and combining with a market prediction report, the target unit price of the work cost of the reinforcing steel bar workers can be determined by researching a local labor market, the target use cost of the reinforcing steel bar processing equipment can be determined by measuring and calculating the use efficiency of the machine, and the specific indexes together form a target value-making system of the reinforcing steel bar engineering.
The setting of the early warning value needs to consider the acceptable range of the manufacturing cost fluctuation on the basis of the target manufacturing value. A reasonable fluctuation interval is usually determined by setting upper and lower limits, i.e. on the basis of the target manufacturing value. The determination of this interval needs to take into account the characteristics of the different monitoring items. For example, for a concrete material with a relatively stable price, the early warning value may be set within ±5% of the target manufacturing value, whereas for a steel material with a relatively large price fluctuation, it may be necessary to expand the early warning value range to ±10%. Meanwhile, the setting of the early warning value also needs to consider the cost control requirement and the risk bearing capacity of the project, and the normal construction is prevented from being disturbed by frequent early warning while the cost control effect is ensured.
And 205, determining the target manufacturing value and the early warning value of each key monitoring project as key manufacturing cost indexes.
Specifically, the set target manufacturing value and early warning value are determined as key manufacturing cost indexes, and a complete index system is established, wherein the system comprises index names, measuring units, target values, early warning upper limit values, early warning lower limit values and other elements.
Step 30, obtaining actual cost data of the current stage, and determining abnormal indexes with cost deviation based on the actual cost data and key cost indexes.
The actual cost data in the embodiment of the application refers to the actual cost information obtained through site statistics, recording and accounting in the construction process of the building project, and comprises the actual material purchase price, the actual labor cost, the actual mechanical use cost paid, the actual completion cost of the sub project calculated by the actual cost information, and the like.
The abnormal index in the embodiment of the present application refers to the cost index that is found to be out of the allowable deviation range by comparing the actual cost data with the cost control reference set in the target sub-plan.
Specifically, the actual cost data of the current stage is acquired by using the cost management information system. For example, the actual purchase price of the material is automatically obtained by interfacing with a material management system, the manual expense is automatically counted by interfacing with a labor management system, and the equipment use expense is automatically recorded by interfacing with a mechanical equipment management system. Based on the obtained actual cost data, the system comparison is required to be carried out with the key cost index determined in the earlier stage, and the abnormal index is identified. In the comparison process, the actual cost data is compared with the target value of the key cost index to calculate an offset value, and then the offset value is compared with an early warning value to judge whether the allowable range is exceeded. For example, when the actual purchase price of a certain steel material is found to exceed the early warning upper limit value or a certain labor cost is lower than the early warning lower limit value, it can be determined as an abnormal index.
On the basis of the above embodiment, as an alternative embodiment, the step of determining an abnormality index having a cost deviation based on the actual cost data and the key cost index may further include the steps of:
And 301, extracting actual cost data and actual engineering quantity of each key monitoring project.
Specifically, a multi-source data acquisition mechanism is established, and the acquisition of actual cost data is mainly carried out through financial vouchers such as engineering statement, material purchase order, manual cost statement and the like. For example, for reinforcement engineering, it is necessary to collect a price voucher such as a reinforcement purchase invoice, a transportation charge bill, a processing charge bill, and the like. The actual engineering quantity is mainly collected by technical data such as construction logs, engineering acceptance records, field measurement data and the like, for example, concrete engineering quantity data such as the finished steel bar processing installation quantity, the concrete pouring quantity and the like need to be counted.
And 302, acquiring the target construction value and the target engineering quantity of each key monitoring project from the key construction cost indexes.
Specifically, when target data is obtained from key cost indexes, system extraction is required by combining target sub-plans. The acquisition of the target price is mainly based on a key price index system determined in advance, and the key price index system comprises unit price indexes and total price indexes of all monitoring projects. The target engineering quantity is obtained by extracting the planned engineering quantity of each sub-engineering according to the construction plan and the technical scheme.
And 303, calculating the cost deviation rate of the actual cost data and the target cost value and the engineering quantity deviation rate of the actual engineering quantity and the target engineering quantity respectively.
Specifically, when calculating the deviation rate of the actual cost data and the target cost value, a standardized calculation formula is adopted, namely the cost deviation rate= (actual cost data-target cost value)/target cost value multiplied by 100%. For example, for a rebar project, if the actual cost is 580 ten thousand yuan and the target cost is 500 ten thousand yuan, the cost deviation rate is 16%, indicating that the project cost is beyond expectations. Also, in calculating the deviation ratio of the actual engineering amount from the target engineering amount, a similar calculation method is used, i.e., engineering amount deviation ratio= (actual engineering amount-target engineering amount)/target engineering amount×100%.
And 304, calculating a comprehensive deviation value based on the cost deviation rate and the engineering quantity deviation rate.
Specifically, after the cost deviation rate and the engineering quantity deviation rate are obtained, a comprehensive deviation value capable of reflecting the overall deviation condition needs to be obtained through comprehensive calculation. The calculation formula is that the comprehensive deviation value=alpha×the cost deviation rate+beta×the engineering quantity deviation rate, wherein alpha and beta are weight coefficients, and alpha+beta=1. The determination of the weight coefficient needs to consider the characteristics and the importance degree of different monitoring projects. For example, α=0.6 and β=0.4 may be set for a material-consuming project to represent importance of a change in manufacturing cost, and α=0.4 and β=0.6 may be set for a labor-intensive project to highlight influence of a change in the amount of work.
And 305, comparing the comprehensive deviation value with a corresponding early warning value, and determining an important monitoring item exceeding the early warning value as an abnormal index.
Specifically, the calculated comprehensive deviation value is compared with a preset early warning value, so that the abnormal index can be accurately identified. When the comprehensive deviation value exceeds the early warning value range, the monitoring item can be judged to be an abnormal index. For example, if the early warning value of an item is set to ±15%, when the calculated integrated deviation value is 18%, it is indicated that the item has exceeded the acceptable fluctuation range, and important attention needs to be paid as an abnormality index.
And step 40, adjusting the sub-plans corresponding to each stage in the building project based on the abnormality indexes to obtain new sub-plans corresponding to each stage.
Specifically, when the sub-plan adjustment is performed, it is first necessary to analyze the specific cause of the occurrence of the abnormality index. Through deep analysis of the cost deviation rate and the engineering quantity deviation rate, key factors causing abnormality are identified by combining project actual conditions. For example, when it is found that an abnormal index of a reinforcing steel bar project is caused by fluctuation of market price, it is necessary to adjust a material purchasing plan with emphasis, and when it is found that an abnormality of a concrete project is caused by change of a construction scheme, it is necessary to adjust a construction organization plan with emphasis. Adjustment of the sub-plan is based on systematic principles, taking into account both the adjustment requirements of the current phase and the effects on the subsequent phases. For the sub-plan of the current stage, the emphasis is on correcting the deviations that have occurred by adjusting the specific implementation. For example, if the labor cost of a certain project is found to be severe, the labor cost can be reduced by optimizing the construction process, improving the operation mode and the like. For the sub-plan in the subsequent stage, related parameters and control measures are adjusted in advance through pre-judgment analysis, so that similar problems are prevented. In the specific adjustment process, a step-by-step adjustment method is adopted. The method comprises the steps of firstly adjusting directly related sub-plans, such as material purchasing plans, construction scheme modification and the like, and then correspondingly adjusting indirectly related sub-plans, such as fund payment plans, progress update plans and the like, according to the association relation. This stepwise adjustment ensures that coordination is maintained between the individual sub-plans.
On the basis of the above embodiment, as an optional embodiment, the step of adjusting the sub-plan corresponding to each stage in the building project based on the abnormality index to obtain a new sub-plan corresponding to each stage may further include the following steps:
And step 401, calculating the influence degree of the abnormal index, and judging whether the sub-plan at the current stage can eliminate the influence of the abnormal index or not based on the influence degree.
Specifically, when the influence degree of the abnormal index is calculated, a comprehensive evaluation method is adopted, wherein the influence degree=gamma×the cost influence coefficient+delta×the construction period influence coefficient+epsilon×the quality influence coefficient, gamma, delta and epsilon are weight coefficients, and gamma+delta+epsilon=1. The cost influence coefficient reflects the influence of the abnormal index on the total cost of the project, the construction period influence coefficient reflects the influence on the project progress, and the quality influence coefficient represents the influence on the project quality. For example, when an abnormality occurs in a reinforcing steel bar engineering, if the cost impact coefficient is 0.3, the construction period impact coefficient is 0.2, the quality impact coefficient is 0.1, and the weight coefficient γ=0.5, δ=0.3, and ε=0.2 are set, the impact degree of the abnormality index can be calculated to be 0.23. Based on the calculated influence degree, whether the sub-plan adjustment of the current stage is enough to eliminate the influence of the abnormal index is judged by combining a preset influence degree threshold. For example, if the influence level threshold is set to 0.2, when the calculated influence level exceeds the threshold, it is indicated that the sub-plan adjusting only the current stage may not completely eliminate the influence of the abnormality index, and it is necessary to consider enlarging the adjustment range.
Step 402, if the sub-plan of the current stage cannot eliminate the influence of the abnormal index, analyzing the association degree of the abnormal index and each subsequent stage after the current stage.
Specifically, if the sub-plan at the current stage cannot eliminate the influence of the abnormal index, the adjustment range needs to be enlarged, and the association degree between the abnormal index and each subsequent stage needs to be analyzed. The association degree is calculated by a weighted scoring method, namely association degree=Σ (wi×fi), wherein Wi is the weight of each evaluation factor, and Fi is the scoring value of each factor. The evaluation factors include technical relevance, resource dependence, progress relevance, and the like. For example, for an abnormal index of a concrete project, it is necessary to evaluate the degree of association with the subsequent stages of finishing work, equipment installation work, and the like. If the correlation degree with the decoration project is calculated to be 0.8 and the correlation degree with the equipment installation project is calculated to be 0.3, the method indicates that the adjustment of the decoration project stage needs to be focused.
Step 403, determining the stage range needing to be adjusted based on the association degree.
Specifically, when determining the adjustment stage range, a correlation threshold method is adopted, that is, when the correlation between a certain subsequent stage and the abnormality index exceeds a set threshold, the stage is brought into the adjustment range. For example, if the association threshold is set to 0.5, the association is required to be adjusted correspondingly in the stage where the association is greater than 0.5. The method can ensure that the adjustment range is not too large to cause resource waste and too small to cause insufficient regulation.
On the basis of the above embodiment, as an alternative embodiment, the step of determining the stage range to be adjusted based on the association degree may further include the steps of:
Step 4031, analyzing the influence chains of the abnormal indexes on each subsequent stage after the current stage to obtain the initial influence coefficients of each subsequent stage.
Specifically, when analyzing the influence chain of the abnormal index, firstly, an influence transfer model needs to be constructed, and the model takes the abnormal index as a starting point, and forms a complete influence network through a plurality of dimension transfer paths such as association of a carding technology, resource dependence, progress influence and the like. For example, when a construction cost abnormality occurs in a reinforcing bar construction, it is necessary to analyze the influence path thereof on the subsequent concrete construction, finishing construction, installation of equipment and the like. The influence can be transmitted in a direct mode, such as the rising of the price of the steel bar, so as to directly influence the construction cost of the structural engineering, or in an indirect mode, such as the delay of the steel bar engineering, so as to lead to the time compression of the subsequent working procedure, thereby influencing the construction cost.
When the initial influence coefficient of each subsequent stage is calculated, a multi-factor evaluation method is adopted, wherein the initial influence coefficient=λ1×technology influence factor+λ2×resource influence factor+λ3×progress influence factor, wherein λ1, λ2 and λ3 are weight coefficients, and λ1+λ2+λ3=1. The value range of each influence factor is 0-1, and is determined through expert evaluation or historical data analysis. For example, if the technical influence factor of the abnormal reinforcing steel bar engineering on the concrete engineering is 0.8, the resource influence factor is 0.6, the progress influence factor is 0.7, and the weight coefficients are 0.4, 0.3 and 0.3 respectively, the initial influence coefficient of the concrete engineering can be calculated to be 0.71.
Step 4032, calculating the influence transfer intensity between each subsequent stage based on the initial influence coefficient.
Specifically, after the initial influence coefficient of each subsequent stage is obtained, the influence transfer intensity between stages needs to be calculated. The transmission intensity is calculated by using an attenuation model, namely the transmission intensity=initial influence coefficient×attenuation coefficient K, wherein the attenuation coefficient K is related to the distance between the phases and the association degree. For example, if there is a direct correlation between the two phases, the K value may be close to 1, and if the degree of correlation is weak, the K value will be correspondingly reduced. The attenuation model can reflect the attenuation characteristic of the cost effect in the transmission process.
Step 4033, determining the affected key stage and the accumulated impact value of the key stage in each subsequent stage according to the impact transfer intensity.
Specifically, the cumulative impact value for each subsequent stage is calculated based on the impact transfer intensity. The cumulative effect value is calculated by a weighted accumulation method, namely the cumulative effect value=Σ (αi×si), wherein αi is a weight coefficient of each transmission path, and Si is the corresponding transmission intensity. For example, when a certain stage is affected by three different paths, the transmission intensity is 0.6, 0.4 and 0.3, and the corresponding weights are 0.4, 0.35 and 0.25, the cumulative impact value of the stage is 0.445, and the calculation method considers the superposition effect of multipath impact, so that the actual affected degree can be reflected more accurately.
Step 4034, determining the comprehensive influence degree of each key stage by combining the accumulated influence values.
Specifically, based on the cumulative impact value, in combination with the stage characteristic index, the degree of the overall impact of each stage can be calculated. The calculation uses an extremum comparison method, namely the comprehensive influence degree=Max (cumulative influence value, characteristic index). The characteristic index mainly considers factors such as stage cost ratio, construction period criticality, quality sensitivity and the like, and takes the maximum value as the characteristic index. For example, if the cumulative impact value at a stage is 0.6, the cost ratio is 0.5, the construction period criticality is 0.7, and the quality sensitivity is 0.4, the characteristic index is 0.7, and finally the overall impact degree at that stage is 0.7.
Step 4035, generating a stage range to be adjusted based on each key stage of which the comprehensive influence degree exceeds the influence degree threshold.
Specifically, when determining the stage range that needs to be adjusted, a threshold judgment is adopted. The influence degree threshold value theta is preset, and when the comprehensive influence degree of a certain stage exceeds theta, the stage is brought into the adjustment range. The influence degree threshold value needs to be set by considering factors such as project characteristics, management capability, resource conditions and the like. For example, when θ=0.5 is set, the stage with the comprehensive influence degree greater than 0.5 needs to be adjusted, and the method can avoid the problem that the adjustment range is too large or too small, and ensure the pertinence and feasibility of the regulation measures.
Step 404, determining a new sub-plan to be adjusted for each subsequent stage in the range of stages.
Specifically, when a new sub-plan is formulated, first, the original plan parameters of each stage need to be analyzed, including key elements such as a planning period, a planning cost, and planning resource allocation. By comparing the original planning parameters with the comprehensive influence degree, specific parameters to be adjusted can be determined. For example, when the degree of the integrated influence of a stage is 0.7, it is indicated that the original planning parameters of the stage may require a larger adjustment. The new sub-plan is formulated by adopting a plan parameter correction method. For the time period adjustment, a time buffer value is determined based on the degree of the integrated influence. And when the comprehensive influence degree exceeds a threshold value, increasing the buffer time on the basis of the original planning period. In terms of resource allocation, a resource replenishment strategy is adopted, and the amount of resources to be replenished is determined according to the comprehensive influence degree, so that the strategy ensures the sufficiency of resource supply. The cost adjustment adopts a cost correction method. And determining the cost adjustment amplitude according to the comprehensive influence degree. For example, if the original planning cost is 100 ten thousand yuan at a certain stage and the comprehensive influence degree is 0.8, the cost budget of 80 ten thousand yuan needs to be increased, so that the new planning cost reaches 180 ten thousand yuan.
On the basis of the above embodiment, as an alternative embodiment, a method for dynamically managing the whole process of construction cost may further include the following steps:
Specifically, the adjustment amplitude of the new sub-plan at each stage is calculated. The adjustment amplitude is obtained by comparing the new and old planning parameters, and the calculation method is that the adjustment amplitude= (new planning parameter-original planning parameter)/original planning parameter. For example, the original schedule period is 30 days at a certain stage, the new schedule period is 51 days, the schedule period adjustment range is 0.7, the original schedule cost is 100 ten thousand yuan, the new schedule cost is 180 ten thousand yuan, the cost adjustment range is 0.8, and the maximum value of these parameter adjustment ranges is taken as the overall adjustment range of the stage, in this example, 0.8. And generating an adjustment intensity distribution map based on the calculated adjustment amplitude of each stage. The distribution diagram is characterized in that a project time axis is taken as an abscissa, the adjustment amplitude is taken as an ordinate, and the adjustment amplitude of each stage is drawn into a curve. The visual display method can intuitively reflect the distribution characteristics of the adjustment intensity, and is convenient for finding abnormal fluctuation. For example, if the amplitude of the adjustment at a stage is significantly higher than at an adjacent stage, a significant peak will be formed on the profile. By analyzing the adjustment intensity distribution map, a stage node in which the adjustment amplitude is abnormal can be identified. And performing anomaly identification by adopting a range analysis method, namely calculating the difference value of the adjustment amplitude of the adjacent stages, and marking the node as an anomaly node when the difference value exceeds a preset threshold value. For example, the threshold is set to 0.3, and if the adjustment amplitude of a certain stage is 0.8 and the adjacent stage is 0.4, and the difference is 0.4 greater than the threshold, the node is identified as an abnormal node.
For the identified abnormal nodes, constraint conditions need to be established for secondary optimization. Constraints include smoothness constraints for the adjustment amplitude of adjacent phases, resource capability constraints, and overall cost constraints. The smoothness constraint requires that the difference value of the adjustment amplitude of adjacent stages does not exceed a threshold value, the resource capacity constraint ensures that the adjusted resource requirement does not exceed the upper limit of available resources, and the total cost constraint ensures that the total cost after optimization is within an acceptable range.
Based on the constraint conditions, a section balance method is adopted to secondarily optimize the new sub-plan. Firstly, an adjustment interval of the abnormal node is determined, namely, the abnormal node is taken as a center, and the adjustment interval extends forwards and backwards to form an optimization interval. In this section, the adjustment amplitude is smoothed by adjusting the planning parameters of each stage. For example, if the adjustment amplitude of an abnormal node is 0.8, it is possible to reduce the adjustment amplitude of the node to 0.6 by reassigning the adjustment amount in the optimization interval, and to properly increase the adjustment amplitude of the adjacent stage, thereby realizing the overall balance. For example, in some engineering projects, the adjustment amplitude of the decoration stage is found to be abnormally high to be 0.9 by adjusting the intensity distribution diagram, and the adjacent stage is only 0.4. The adjustment amplitude of the decoration stage is reduced to 0.7 through secondary optimization, and the adjustment amplitude of the adjacent stage is properly improved to 0.5, so that necessary adjustment force is ensured, and local excessive adjustment is avoided.
Referring to fig. 3, a schematic block diagram of a dynamic management system for whole construction cost process according to an embodiment of the present application may include a plan determining module, an index determining module, an anomaly determining module, and a plan adjusting module, where:
The plan determining module is used for determining a target sub-plan corresponding to the current stage of the building project, the building project comprises a plurality of stages, and each stage corresponds to one sub-plan;
The index determining module is used for determining key cost indexes associated with the current stage based on the target sub-plan;
The abnormality determining module is used for acquiring actual cost data of the current stage and determining an abnormality index with cost deviation based on the actual cost data and the key cost index;
And the plan adjustment module is used for adjusting the sub-plans corresponding to each stage in the building project based on the abnormal indexes to obtain new sub-plans corresponding to each stage.
Optionally, the plan determining module is further configured to obtain a construction drawing and a technical requirement at the current stage, and extract a feature of an engineering component and a construction process requirement;
determining the engineering quantity of the current stage according to the engineering component characteristics and the construction process requirements;
Calculating the project cost of the current stage according to the project quantity and the current market price;
Determining a cost control standard of the current stage according to the engineering cost quota standard and the implementation condition;
And integrating the project cost and the cost control standard into a target sub-plan of the current stage.
Optionally, the index determining module is further configured to extract the project cost data of the sub-projects;
determining a cost constituent based on the itemized engineering cost data;
determining key monitoring items according to the manufacturing cost components;
setting a target building value and an early warning value of each key monitoring item;
And determining the target manufacturing value and the early warning value of each key monitoring project as key manufacturing cost indexes.
Optionally, the abnormality determination module is further configured to extract actual cost data and actual engineering quantity of each key monitoring item;
Acquiring target building values and target engineering quantities of key monitoring projects from the key cost indexes;
calculating the cost deviation rate of the actual cost data and the target cost value and the engineering quantity deviation rate of the actual engineering quantity and the target engineering quantity respectively;
Calculating a comprehensive deviation value based on the cost deviation rate and the engineering quantity deviation rate;
And comparing the comprehensive deviation value with a corresponding early warning value, and determining an important monitoring item exceeding the early warning value as an abnormal index.
Optionally, the plan adjustment module is further configured to calculate an influence degree of the abnormal indicator, and determine whether adjusting the sub-plan in the current stage can eliminate the influence of the abnormal indicator based on the influence degree;
If the sub-plan of the current stage can not eliminate the influence of the abnormal index, analyzing the association degree of the abnormal index and each subsequent stage after the current stage;
determining a stage range to be adjusted based on the association degree;
And determining a new sub-plan to be adjusted for each subsequent stage in the stage range.
Optionally, the plan adjustment module is further configured to analyze an influence chain of the abnormality index on each subsequent stage after the current stage, so as to obtain an initial influence coefficient of each subsequent stage;
calculating the influence transfer intensity between each subsequent stage based on the initial influence coefficient;
determining the key stage affected in each subsequent stage and the accumulated impact value according to the impact transfer intensity;
determining the comprehensive influence degree of each key stage by combining the accumulated influence values;
and generating a stage range which needs to be adjusted based on each key stage of which the comprehensive influence degree exceeds the influence degree threshold.
Optionally, the plan adjustment module is further configured to calculate an adjustment amplitude of the new sub-plan corresponding to each stage, and generate an adjustment intensity distribution map;
Identifying a phase node with abnormal adjustment amplitude based on the adjustment intensity distribution map;
And establishing constraint conditions of the stage nodes, and performing secondary optimization on the new sub-plans of each stage according to the constraint conditions to obtain optimized sub-plans.
It should be noted that, when the system provided in the above embodiment implements the functions thereof, only the division of the above functional modules is used for illustration, in practical application, the above functional allocation may be implemented by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules, so as to implement all or part of the functions described above. In addition, the system and method embodiments provided in the foregoing embodiments belong to the same concept, and specific implementation processes of the system and method embodiments are detailed in the method embodiments, which are not repeated herein.
The embodiment of the application also provides a computer storage medium, which can store a plurality of instructions, the instructions are suitable for being loaded by a processor and executing the dynamic management method for the whole construction cost process of the embodiment, and the specific execution process can be referred to the specific description of the embodiment and is not repeated here.
Referring to fig. 3, the application also discloses an electronic device. Fig. 3 is a schematic structural diagram of an electronic device according to the disclosure. The electronic device 300 may include at least one processor 301, at least one network interface 304, a user interface 303, a memory 305, and at least one communication bus 302.
Wherein the communication bus 302 is used to enable connected communication between these components.
The user interface 303 may include a Display screen (Display), a Camera (Camera), and the optional user interface 303 may further include a standard wired interface, and a wireless interface.
The network interface 304 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), among others.
Wherein the processor 301 may include one or more processing cores. The processor 301 utilizes various interfaces and lines to connect various portions of the overall server, perform various functions of the server and process data by executing or executing instructions, programs, code sets, or instruction sets stored in the memory 305, and invoking data stored in the memory 305. Alternatively, the processor 301 may be implemented in at least one hardware form of digital signal Processing (DIGITAL SIGNAL Processing, DSP), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor 301 may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU), an image processor (Graphics Processing Unit, GPU), and a modem, etc. The CPU mainly processes an operating system, a user interface, an application program and the like, the GPU is used for rendering and drawing contents required to be displayed by the display screen, and the modem is used for processing wireless communication. It will be appreciated that the modem may not be integrated into the processor 301 and may be implemented by a single chip.
The Memory 305 may include a random access Memory (Random Access Memory, RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 305 includes a non-transitory computer readable medium (non-transitory computer-readable storage medium). Memory 305 may be used to store instructions, programs, code, sets of codes, or sets of instructions. The memory 305 may include a stored program area that may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the respective method embodiments described above, etc., and a stored data area that may store data, etc., involved in the respective method embodiments described above. Memory 305 may also optionally be at least one storage device located remotely from the aforementioned processor 301. Referring to fig. 3, an operating system, a network communication module, a user interface module, and an application program of a construction cost overall process dynamic management method may be included in the memory 305 as a computer storage medium.
In the electronic device 300 shown in fig. 3, the user interface 303 is primarily used to provide an input interface for a user to obtain data entered by the user, while the processor 301 may be used to invoke an application program in the memory 305 that stores a construction cost overall process dynamic management method, which when executed by the one or more processors 301, causes the electronic device 300 to perform the method as described in one or more of the embodiments above. It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present application is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all of the preferred embodiments, and that the acts and modules referred to are not necessarily required for the present application.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus may be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative, such as a division of units, merely a division of logic functions, and there may be additional divisions in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some service interface, device or unit indirect coupling or communication connection, electrical or otherwise.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable memory. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in whole or in part in the form of a software product stored in a memory, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method of the various embodiments of the present application. The memory includes various media capable of storing program codes, such as a USB flash disk, a mobile hard disk, a magnetic disk or an optical disk.
The foregoing is merely exemplary embodiments of the present disclosure and is not intended to limit the scope of the present disclosure. That is, equivalent changes and modifications are contemplated by the teachings of this disclosure, which fall within the scope of the present disclosure. Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure.
This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a scope and spirit of the disclosure being indicated by the claims.
Claims (10)
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