CN110633822A

CN110633822A - Optimization method for minimum and relative minimum of arbitrary project combination resources by overall planning method

Info

Publication number: CN110633822A
Application number: CN201910246078.4A
Authority: CN
Inventors: 吴茜龄; 吴开平
Original assignee: Jinan Senkun Enterprise Management Consulting Co Ltd
Current assignee: Jinan Senkun Enterprise Management Consulting Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2019-12-31

Abstract

The present invention provides a method for: the optimization method can be used as a whole to carry out any combination of various projects of unified organization management and target control, has the advantages of unchanged construction period and minimum and relatively minimum resource requirements; according to a resource requirement dynamic summary table of each project organization management and target control plan and/or a project organization management and target control multilevel plan system in a combined project, respectively adopting a time period with the most resource requirements from left to right and from right to left as an optimization time period, sequencing the work in the optimization time period according to relative importance degree, and then optimizing the work in the last time period to the time period within the range of total time difference; in each optimization step, the time parameters of the related organization management and the target control plan are calculated according to the starting time of the optimized work, and then the optimization is continued; until there is no optimizable non-critical work in the combined project.

Description

Optimization method for minimum and relative minimum of arbitrary project combination resources by overall planning method

Technical Field

The invention belongs to the technical field of a coordination method, and relates to one of main components of a coordination method project or task organization management and target control technology, in particular to a method for realizing the following functions: under the condition that various project organization management and target control plans and/or project organization management and target control multi-level plan systems which can be used as a whole for carrying out unified organization management and target control are combined at will, the optimization method with unchanged construction period and minimum and relatively minimum combined project resource requirements is carried out by utilizing the non-critical total working time difference in the combined project organization management and target control plans and/or the project organization management and target control multi-level plan systems.

Background

In the beginning of the fifties of the last century, in order to meet the requirements of scientific research with complex relationships and technical development work organization management, advanced industrial countries in the world have been researched on new plan management technologies in sequence, wherein the U.S. has firstly researched CPM (critical line method) and PERT (plan review technology) successfully, and the methods are established on the basis of a working relationship network model and organically combine the formulation, coordination, optimization and control of a plan, so the method is called as a network planning technology abroad.

The PERT (plan review technology) invented in 1956 in the United states is applied to compiling a research plan of a North Star missile, and more than three thousand enterprises are coordinated, so that the plan is completed two years ahead of time according to preset time; the method is applied to the management and control of Apollo space planning which costs more than four billion dollars and mobilizes more than forty thousand manpower, and achieves good effects.

According to the statistics of the former Soviet Union government, the construction period of a building installation enterprise applying the network planning technology can be shortened by 20%, and the engineering cost can be reduced by about 10%.

In 3 1978, the american society for civil engineering and engineers journal commentary states that this method is currently the only new method for project management and that no new method will appear to replace it in the foreseeable future, and therefore we should enjoy it, use it, and improve it.

At present, network planning techniques are popularized and applied in various advanced industrial countries in the world, such as the United states, the Russia, the English, the Japanese, the French, the Germany, and the like.

The professor of Hualuo heptyl, a famous mathematic scientist in China, sets up a scientific system of an overall method on the basis of absorbing the technical theory of foreign network planning from the national situation of China, and is popularized and applied in production practice from the beginning of sixty years in the last century to obtain great economic benefits.

The network planning technology has the following defects and shortcomings, which influence and restrict the implementation, popularization and application of the network planning technology.

(1) Establishing the restriction of the network model rule of project or task organization management and target control plan and the restriction of the expression mode of the plane network model, so that most of project or task organization management and target controllers cannot complete, especially large or complex projects;

(2) the method is not beneficial to the restriction of the application of the computer technology, the application of the technology depends on the support of the computer technology, the establishment and modification of a network model, the calculation of time parameters, the optimization control of a construction period target, the optimization control of a resource target and the like, and the method is difficult to complete only by manpower;

(3) due to the restriction of application range, the CPM is only suitable for organization management and target control of a series of specific work directly decomposed from positive projects or tasks; PERT is only applicable to the review of non-affirmative project or task milestone targets; with the overall and rapid development of scientific technology, not only most projects or tasks have mixed features, but also the organization method has mixed features;

(4) the necessary functional technologies are lacked, and the main functional technologies are only: construction period-cost optimization technology; the construction period is unchanged, and the resource demand is balanced and optimized; the resources are limited, and the construction period is the shortest optimization technology; and non-affirmative project or task milestone target review techniques;

(5) the main functional technologies all have obvious defects and shortcomings, such as:

1) the construction period-cost optimization technology comprises the following steps: the method comprises the steps that after time parameter calculation is carried out on each line consisting of key work, the key line can be judged, the rate of each key work needs to be calculated, and the project duration-cost optimization can be carried out, which is difficult or even impossible in actual work;

2) the construction period is unchanged, and the resource balance optimization technology comprises the following steps: the optimization method does not consider the dynamic condition of resource demand of non-key work in the local (or maneuvering) time difference range, and is obviously unreasonable;

3) the optimization technology has the advantages of limited resources and shortest construction period: arranging the work started before the optimization time period at the most important head, and not considering the influence of the optimization of the non-critical work started before the optimization time period on the construction period;

4) the evaluation technology of the non-affirmation type project or task milestone target does not consider the non-keyTarget interval Lag of milestone_i-jThe influence on the estimated variance, etc.

The network planning technology belongs to a coordination method, and is one of application technologies of the coordination method; it can be said that the network planning technique is a orchestration method, and not vice versa.

The optimization method for various arbitrarily combined projects or tasks organization management and target control plans and/or project organization management and target control multi-level plan systems with unchanged construction period and minimum resource requirements and relatively minimum resource requirements is one of the target controls of the overall project or task organization management and target control technology, and is shown in the following points by professor warreceipt: and applying a planning method to obtain benefits for non-key work.

In the traditional network planning technology, an optimization method with constant construction period and minimum and relatively minimum resource requirements does not exist in any combination of various project or task organization management and target control plans and/or project organization management and target control multi-level plan systems.

The method reduces various project or task organization management and target control plans and/or project organization management and target control plan systems which are combined randomly, reduces the resource demand in the time period with the most resource demand, can reduce the cost for completing the project or task, and improves the economic benefit, such as:

(1) the resource demand of various projects or tasks of any combination in the time period with the most resource demand in the project organization management and target control plan and/or project organization management and target control plan system is reduced, and the scale of auxiliary production and living facilities for completing any combination of projects or tasks can be reduced;

(2) the resource demand of various projects or tasks of any combination in the time period with the most resource demand of the project organization management and target control plan and/or project organization management and target control plan system is reduced, and main equipment required for completing any combination of projects or tasks, such as hoisting or vertical transportation equipment, concrete pumping equipment and the like, can be reduced.

Disclosure of Invention

The invention can be used as a whole to carry out unified organization management and target control, and various projects or tasks of any combination are organized, managed and target control plan and/or project organization management and target control multilevel plan system, Gantt chart or image progress cross-track chart thereof and resource demand dynamic table; searching the time interval with the most resource requirements or the relative most resource requirements from left to right and from right to left by the resource requirement dynamic summary table of the combined project respectively to be used as the optimization time interval; by optimizing the non-critical work in the optimization time period, the maximum resource demand of various projects combined at will and the resource demand in the relative maximum time period are reduced.

The invention divides the project or task into two types of positive type work and non-positive type work according to the requirements of organization management and target control:

(1) positive finalization "work": time t required for completing "work_i(or T)_i) Is positive;

(2) non-affirmative type "work": the time required for completing the work is not positive, and a three-point estimation method is adopted for estimating the time for completing the work:

1)a_T、m_T、b_T，D_T＝(a_T+4m_T+b_T)÷6，σ_T ²＝[(b_T-a_T)÷6]²

2)a_t、m_t、b_t，D_t＝(a_t+4m_t+b_t)÷6，σ_t ²＝[(b_t-a_t)÷6]²

a_T、a_t-optimistic completion "work" time;

m_T、m_tpossible "work" time to complete;

b_T、b_t-pessimistic completion "work" time;

D_T、D_t-estimating a weighted average of the time to complete the "work";

σ_T ²、σ_t ²-estimated deviation of the completion "working" time.

According to the type of work decomposed by the project, the project is divided into a positive type, a non-positive type and a mixed type:

(1) positive type item: according to the requirements of organization management and target control, the decomposed 'work' is positive type 'work';

(2) non-affirmative type item: according to the requirements of organization management and target control, the decomposed 'work' is 'work' of a non-positive type;

(3) and (3) mixing type items: according to the requirements of organization management and target control, the decomposed work has both positive and negative fixed work.

The project of the invention is divided into an organization mode and an organization method between 'works' according to the requirements of organization management and target control, and the invention comprises the following seven types:

the project is according to organization management and target control requirement, the organization mode and organization method between the decomposed 'works', taking i 'work' and j 'work' as an example, i 'work' is the immediately preceding 'work' of j 'work', or j 'work' is the immediately following 'work' of i 'work', the organization mode and organization method between i 'work' and j 'work':

(1) fys (lt): i 'work' ends LT day, j 'work' begins;

(2)STS(LT_i): i "work" Start LT_iDay, j "work" begins;

(3)FTF(LT_j): i "work" end LT_jDay, j "work" ends;

(4)STF(LT_i，LT_j): i "work" Start LT_iLT for daily and reuse_jDay, j "work" ends, i.e. j "work" is to start LT at I "work_iAfter a day, with LT_jFinishing the day;

(5) STS and FTF (LT)_i，LT_j): i "work" Start LT_iThe day, j 'work' starts, i 'work' ends LT_jFinishing the day and j work;

(6) STS and STF (LT)_i，LT_i’，LT_j)：iStart of "work" LTi day, start of "j work", start of "i work" LT_i _‘LT for daily and reuse_jDay, j "work" ends, i.e. j "work" starts LT at i "work_i’After a day, with LT_jFinishing the day;

(7) FTS and STF (LT, LT)_i，LT_j): i 'work' ends LT day, j 'work' starts, i 'work' starts LT_iLT for daily and reuse_jDay, j "work" ends, i.e. j "work" starts LT at i "work_iAfter a day, with LT_jThe day is over.

The invention divides the organization management and target control modes between 'work' into two types of affirmation type and non-affirmation type:

(1) the positive type organization management and target control mode is as follows: the lapping relation and the lapping time interval are both positive organization management and target control modes;

(2) non-positive type organization management and target control mode: the lap relationship is positive; however, the lap time interval is not certain, and a three-point estimation method is adopted to estimate the lap time interval:

a.LT_a、LT_m、LT_b，D_LT＝(LT_a+4LT_m+LT_b)÷6，σ_LT ²＝[(LT_b-LT_a)÷6]²

b.LT_ia、LT_im、LT_ib，D_iLT＝(LT_ia+4LT_im+LT_ib)÷6，σ_iLT ²＝[(LT_ib-LT_ia)÷6]²

c.LT_ja、LT_jm、LT_jb，D_jLT＝(LT_ja+4LT_jm+LT_jb)÷6，σ_jLT ²＝[(LT_jb-LT_ja)÷6]²

d.LT_i＇a、LT_i＇m、LT_i＇b，D_i＇LT＝(LT_i＇a+4LT_i＇m+LT_i＇b)÷6，σ_i＇LT ²＝[(LT_i＇b-LT_i＇a)÷6]²

according to the difference between the project organization management and target control modes and methods, the project organization management and target control modes and methods are divided into positive type, non-positive type and mixed type:

(1) the positive project organization management and target control mode comprises the following steps: the organization management and target control modes between the work decomposed by the project are both positive organization management and target control modes;

(2) non-positive project organization management and target control mode: the organization management and target control modes between the work decomposed by the project are both non-affirmatively set organization management and target control modes;

(3) the mixed project organization management and target control mode comprises the following steps: the organization management and target control modes between the work decomposed by the project are both the organization management and target control modes which are affirmatively fixed and are not affirmatively fixed.

The invention divides the object organization management and the object control plan into three categories:

(1) positive project organization management and goal control plan: a positive type project adopts a project organization management and target control plan of a positive type organization management and target control mode and method;

(2) the non-affirmative project organization management and target control plan comprises the following three types:

1) the positive project adopts a project organization management and target control plan of a non-positive organization management and target control mode;

2) a non-affirmative project adopts a project organization management and target control plan of a positive organization management and target control mode;

3) the non-positive project adopts a project organization management and target control plan of a non-positive organization management and target control mode;

(3) the mixed project organization management and target control plan comprises the following five types:

1) a mixed project adopts a project organization management and target control plan of a positive type organization management and target control mode;

2) the mixed project adopts a project organization management and target control plan of a non-positive organization management and target control mode;

3) the mixed project adopts a project organization management and target control plan of a mixed organization management and target control mode;

4) a non-affirmative project, which adopts a project organization management and target control plan of a hybrid organization management and target control mode;

5) the positive project adopts a project organization management and target control plan of a hybrid organization management and target control mode.

In the combined project, the project organization management and target control plan is formulated as shown in the following table:

wherein:

A. and (3) performing positive setting work:

a_t＝m_t＝b_t＝D_t＝t；σ_t ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

in the combined project, the project is decomposed by three levels according to project, single project and work step by step, each level respectively makes an organization management and target control plan, and an established project organization management and target control multi-level plan system is taken as an example,

the method for establishing the project organization management and target control multi-level planning system is shown in the following table:

according to the requirements of organization management and target control, the invention adopts a step-by-step construction period control method to make various levels of organization management and target control plans, and a built project organization management and target control multi-level plan system, which is shown in the following table:

(1) project level organizational management and goal control planning, as shown in the following table:

wherein:

A. positive type item division:

a_T＝m_T＝b_T＝D_T＝T；σ_T ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

the project level organization manages the target construction period of the target control plan, and the target construction period is required to meet the requirements of contracts or preset construction periods.

(2) One of the project levels organizes the management and target control plans as shown in the following table:

wherein:

A. positive type list item:

a_T＝m_T＝b_T＝D_T＝T；σ_T ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

the target construction period of the project secondary organization management and target control plan is controlled by the construction period of corresponding sub-projects in the primary organization management and target control plan.

(3) One of the project levels organizes the management and target control plans as shown in the following table:

wherein:

A. the positive design work orders are as follows:

a_t＝m_t＝b_t＝D_t＝t；σ_t ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

the target construction period of the project three-level organization management and target control plan is controlled by the construction period of a corresponding single project in the second-level organization management and target control plan.

According to the requirements of organization management and target control, the invention adopts a reverse step-by-step construction period control method to make various levels of organization management and target control plans, and establishes a project organization management and target control multi-level plan system, which is shown in the following table:

(1) project level organizational management and goal control plans, as shown in the following table:

wherein:

A. positive type item division:

a_T＝m_T＝b_T＝D_T＝T；σ_T ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

wherein:

A. positive type list item:

a_T＝m_T＝b_T＝D_T＝T；σ_T ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

and organizing the target construction period of the management and target control plan of each project in the project secondary level as the construction period of the corresponding project in the primary management and target control plan.

wherein:

A. and (3) performing positive setting work:

a_t＝m_t＝b_t＝D_t＝t；σ_t ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

and (4) organizing the target construction period of the management and target control plan of each single project in the project three-level, wherein the target construction period is used as the construction period of the corresponding single project in the second-level organization management and target control plan.

According to the requirements of organization management and target control, the invention adopts a step-by-step and reverse step-by-step construction period control method to make various levels of organization management and target control plans, and establishes a project organization management and target control multi-level plan system; taking the first-level and second-level organization management and target control plans to adopt the step-by-step time control, and the second-level and third-level organization management and target control plans to adopt the reverse step-by-step time control as an example, the following table shows:

wherein:

A. positive type item division:

a_T＝m_T＝b_T＝D_T＝T；σ_T ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

wherein:

A. positive type list item:

a_T＝m_T＝b_T＝D_T＝T；σ_T ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

wherein:

A. and (3) performing positive setting work:

a_t＝m_t＝b_t＝D_t＝t；σ_t ²＝0；

B. positive fixed lap joint time interval:

a.LT_a＝LT_m＝LT_b＝D_LT＝LT，σ_LT ²＝0；

b.LT_ia＝LT_im＝LT_ib＝D_iLT＝LT_i，σ_iLT ²＝0；

c.LT_ja＝LT_jm＝LT_jb＝D_jLT＝LT_j，σ_jLT ²＝0；

d.LT_i＇a＝LT_i＇m＝LT_i＇b＝D_i＇LT＝LT_i＇，σ_i＇LT ²＝0。

In the combined project, each project organization management and target control plan and/or each organization management and target control plan in the project organization management and target control multi-level plan system are formulated through the following steps:

(1) the conversion of the organizational logical relationship between "jobs" is performed as determined by project organizational management and the objective control planner: the work immediately before the work B is the work A, and the work immediately after the work A is converted into the work B; or the work immediately after the work A is the work B, and the work immediately before the work B is converted into the work B is the work A;

(2) organizing logical relationship arrangement

(3) Checking and supplementing the logical relation defect of the work organization: the "work" items in the main "work" list, except for ST, must be determined to have the immediate "work", including FIN; in addition to FIN, it must be determined that there is immediate "work", including ST; the "work" which is not the immediately preceding "work" of any "work" is the immediately preceding "work" of FIN; the "work" which is not the "work" immediately after any "work" is the "work" immediately after ST; the work before the organization defect is found is not determined or (and) the work after the organization defect is not determined, namely the work with the organization defect is obtained, and the work before the organization defect or (and) the work after the organization defect is supplemented according to the organization logic relationship;

(4) the "work" in the main "work" list organizes the ordering of the orders: in order from ST: "work" with ST as immediately before; the work with the ordered work as the immediately previous work; … …, respectively; until FIN; starting from FIN, the following are in sequence: work of work after FIN is taken as tight; the ordered work is used as the work of the next work; … …, respectively; until ST;

(5) checking and modifying of logical relation defects and errors by work organization: in the process of sequencing according to the organization sequence before and after, the 'work' which cannot finish sequencing is the 'work' with the defects or errors of the organization logic relationship, and the 'work' is supplemented or modified according to the organization logic relationship.

In the combined project, project organization management and target control plan; in each level and each organization management and target control plan in the multi-level plan system, the time parameter calculation method comprises the following steps:

(1) time of earliest possible start of "work

(2) Time of earliest possible end of "work

(3) Interval between "work

(4) Maneuver (local) time differences of "work": FF_i＝min(Lag_i-j)；

(5) Total time difference for "work": TF_i＝min(TF_j+Lag_i-j)；

(6) Time at which "work" must start at the latest: LS (least squares)_i＝ES_i+TF_i；

(7) Time at which "work" must be ended at the latest: LF (Low frequency)_i＝EF_i+TF_i。

In the combined project, project organization management and target control plan; the estimated variance calculation method for each level and each organization management and target control plan in the multi-level planning system is as follows:

in the combined project, project organization management and target control plan; after time parameter calculation is finished, the influence of deviation on the implementation process of the next work is estimated according to the completion time of each main work, and the deviation sigma is carried out²After the adjustment of (2), the calculation of the estimated variance thereof is performed.

For discontinuously completed work (namely discontinuous work), the adjustment of the estimated deviation of the time for completing the work is carried out;

the method for adjusting the time deviation of the completion of each main work estimation work comprises the following steps:

note:

(1)^*σ_i ²to adjusted σ_i ²；

(2)σ_i ²-variance of estimated completion time offset for the main "jobs" i: sigma_i ²＝[(b_it-a_it)÷6]²Wherein:

1)b_it-a pessimistic (longest) value of estimated completion time for the main "work" i;

2)a_it-an optimistic (shortest) value of the estimated completion time for the main "jobs" i;

(3)D_it-as weighted average of estimated completion times of the main "jobs" i: d_it＝(a_it+4m_it+b_it) 6, wherein:

1)m_it-the most probable (time) value of estimated completion time for the primary "work" i;

(4)D_it' -a limit value for the estimated completion time of the main "jobs" i,

by normal distribution of parameters

When lambda is_iP (D) is more than or equal to 3.5_it') approximately equal to 100%, therefore

In the organization management and target control plan, the estimation deviation of the main work completion time has influence on the work after the tight joint, and the influence of the actual lap joint time distance is considered, namely the influence on the work after the tight joint is adjusted according to the lap joint time distance;

at lap joints between main "workDistance estimation variance, impact value on post-tightening "work

The calculation method of (a) is shown in the following table:

in the project organization management plan, each item of 'work' organization arrangement (lap time interval) estimation variance ((Taking the maximum of the following calculation results)

The influence of the estimated variance of "work" in the tissue management and target control plan on the "work" immediately after the "work" is taken into account_i-j) The influence factors of (a) are as follows:

the variance of the time deviation value of each main 'work' accumulated estimation completion

The calculating method of (2):

note:

(1)EF_i'As the main work' i, the time which can be completed at the latest due to the estimation deviation of the estimation completion time of the work is calculated by the normal distribution parameter

λ_iP is more than or equal to 3.5_(iEF’)About 100%, therefore

(2) In the item groupIn the management and target control plan, the variance of the deviation of the time for completing each main 'work' estimation consists of two parts: namely, it is

(excluding^*σ_j ²) And^*σ_j ²；υ² _i(t)also comprising two parts, i.e. v² _i(t)And^*σ_i ²the effect on j "work";

(excluding^*σ_j ²) -an estimated variance for the j job start time; upsilon is² _i(t)(excluding^*σ_i ²) -estimated variance for i job start time.

The project organization management and target control plan time parameter and the calculation method of the estimated variance in the combined project are as follows:

(1) computing ES with project organization management and target control plans expressed with immediately prior organizational logical relationships_i、EF_iAnd upsilon_i ²；

(2) Computing lags for project organization management and target control plans expressed by closely organized logical relationships_i-jAfter that, FF is determined_iThen calculating TF_i、LS_iAnd LF_i。

The method for calculating the time parameter and the estimated variance of the project organization management and target control multi-level planning system in the combined project comprises the following steps:

the method for calculating the time parameters and the estimated variances of the project organization management and target control multi-level planning system established by the gradual construction period control comprises the following steps:

(1) the first-level organization management and target control plan and the calculation of time parameters:

1) project organization management and goal control for immediately prior organizational logical relationship representationPlanning, calculating ES_i、EF_i；

2) Computing lags for project organization management and target control plans expressed by closely organized logical relationships_i-jAfter that, FF is determined_iThen calculating TF_i、LS_iAnd LF_i；

(2) And (3) secondary organization management and target control plan, calculation of time parameters:

1) computing ES with project organization management and target control plans expressed with immediately prior organizational logical relationships_i、EF_i；

Note: the project construction periods in the first-level organization management and target control plan are the target construction periods of the second-level project organization management and target control plan;

(3) calculating three levels of tissue management and target control plans, time parameters and estimation variances:

1) computing ES with project organization management and target control plans expressed with immediately prior organizational logical relationships_i、EF_i、υ_i ²；

Note: the construction period of a single project in the secondary organization management and target control plan is the target construction period of the organization management and target control plan of a tertiary single project;

(4) and (3) calculating estimated variance of the management and target control plan of each second-level organization: calculating upsilon of organization management and target control plan of each secondary sub-project by taking the estimated variance of the organization management and target control plan planning and completion time of the three-level single project as the estimated variance of the construction period of the single project in the secondary organization management and target control plan_i ²；

(5) The first-level organization management and target control plan is used for calculating the estimation variance: calculating upsilon of the primary organization management and target control plan by taking the estimated variance of the organization management and target control plan and the completion time of the secondary project as the estimated variance of the project construction period and the project construction period in the primary organization management and target control plan_i ²。

The project organization management and target control multi-level planning system established by reverse step-by-step construction period control, and the calculation method of the time parameter and the key variance are as follows:

(1) calculating three levels of tissue management and target control plans, time parameters and estimation variances:

2) Computing lags for project organization management and target control plans expressed by closely organized logical relationships_iAfter-j, determining FF_iThen calculating TF_i、LS_iAnd LF_i；

(2) And (3) calculating a second-level organization management and target control plan, a time parameter and an estimated variance: and taking the estimated variances of the construction period and the construction period of each single project in the three-level organization management and target control plan as the estimated variances of the construction period and the construction period of each single project in the two-level organization management and target control plan:

(3) Calculating a primary tissue management and target control plan, a time parameter and an estimated variance: and taking the estimated variances of the construction period and the construction period of the organization management and target control plan of each secondary project as the estimated variances of the construction period and the construction period of each project in the primary organization management and target control plan:

Estimated variance of each level of tissue management and target control plan:

(1) ES in project in primary organization management and target control plan_iThe estimated variance of (1) is the estimated variance of the starting time of project organization management and target control plan in the secondary organization management and target control plan;

(2) ES for single project in two-level organization management and target control plan_iThe estimated variance of the target control plan is the estimated variance of the starting time of the single-project organization management and the target control plan in the three-level organization management and the target control plan;

(3) in the three-level organization management and target control plan, the estimation variance of the completion time of the organization management and target control plan of a single project is the estimation variance of the completion time of the single project in the two-level organization management and target control plan;

(4) in the secondary organization management and target control plan, the estimation variance of the completion time of the organization management and target control plan of each project is the estimation variance of the completion time of each project in the primary organization management and target control plan.

The resource requirement of the 'working' unit time is a main resource considered in the optimization, and for the 'working' without the resource, the resource requirement is set to be zero;

the resource requirement of the single project in unit time is equal to the sum of the resource requirements of the single project organization management and the target control plan divided by the construction period of the single project; similarly, the resource requirement per time unit of project is equal to the sum of the resource requirements of project organization management and target control plan divided by the project time limit of project.

The invention relates to an optimization step and a method for keeping the whole construction period of a combined project unchanged and requiring minimum resources and relatively minimum resources, which comprises the following steps:

(1) the project organization management and target control multi-level planning system in the combined project comprises:

1) the construction period of each project in the secondary plan in the organization management and target control plan is added with the total time difference (TF) of the project in the primary organization management and target control plan_i) Then, the organization management of each sub item in the secondary plan and the time parameter calculation of the target control plan are carried out again;

2) according to the time parameter calculation result of the organization management and target control plan of each sub-project in the secondary plan, the construction period of the organization management and target control plan of each single project in the tertiary plan is added with the total time difference (TF) of the single project in the secondary organization management and target control plan_i) Then, the organization management of each single item in the three-level plan and the time parameter calculation of the target control plan are carried out again;

(2) drawing Gantt charts or image progress charts according to the earliest possible starting time of each work in each project organization management and target control plan and/or each project organization management and target control multi-level planning system and each organization management and target control plan at the last stage in the combined project, and counting a resource demand dynamic summary table of the combined project;

(3) searching the time interval with the most resource demands from left to right and from right to left respectively as an optimization time interval by using a resource demand dynamic summary table; and sorting the non-critical work in the time period according to the following method, and then arranging the last work in TF_iWithin range, optimized (or right-shifted) after that period; then continuing to optimize according to the method;

(4) when the optimization is carried out until no optimizable non-key work exists, comparing the resource demand of the time period with the most resource demand after each step of optimization, wherein the relatively least resource demand is the resource demand with unchanged construction period and least resource demand; then, the optimization results of the time period with the most resource requirements are searched from left to right and from right to left, and a better scheme is selected.

The sequencing method of non-critical work in the optimization time period comprises the following steps:

(1)(TF_i- Δ t) ≧ 0 and (TF)_i- Δ t) is small;

(2)(TF_i- Δ t) are identical, FF_iSmall;

(3)FF_ialso, same as ES_iEarly;

(4)ES_ialso, r is the same_iMore than one;

(5)r_ialso, t is the same_iLong;

(6)t_ialso, the LF of the work place organization management and target control plan_FINLate;

(7)LF_FINalso, the work place organizes the ES of management and target control plans_STLate;

(8)ES_STalso, work is organized to manage upsilon with a target control plan_FIN ²Large;

(9)υ_FIN ²also, v is the same_i ²Large;

(10)υ_i ²also, σ_i ²Large;

(11)σ_i ²similarly, the relative importance degree of the project organization management and target control plan or the project organization management and target control plan system in which the work is located is ranked, and the relative importance degree is higher;

note: Δ t — time of job optimization (or right shift).

And each optimization step comprises:

(1) combining project organizational management with goal control plans in a project to optimize the start time of post-work as its earliest possible start time (ES)_i) Calculating time parameters again, redrawing Gantt chart or image progress chart, andcounting a resource requirement dynamic table, and then continuously optimizing according to the method;

(2) combining project organization management and target control multi-level planning system in a project, optimizing each step by using the start time of the optimized work as the earliest possible start time (ES) of the work_i) After the time parameters of the system of the project organization management and target control multi-level plan are calculated again according to the reverse construction period control method, the construction period of the organization management and target control plan of each sub project in the second level plan is added with the total time difference (TF) of the sub projects in the first level organization management and target control plan_i) The organization management of each sub item in the secondary plan and the time parameter calculation of the target control plan are carried out again; then, the construction period of each single project organization management and target control plan in the three-level plan is added with the total time difference (TF) of the single project organization management and target control plan in the two-level organization management and target control plan_i) Carrying out organization management of each single item in the three-level plan and time parameter calculation of the target control plan again; redrawing the Gantt chart or the image progress chart, counting the resource requirement dynamic table, and then continuing to optimize according to the method.

The lapping relation is the work of STS, FTF, STF, STS and FTF, STS and STF, and is optimized according to one work in the optimization process;

then, respectively searching the time interval with the relative maximum resource requirement outside the time interval with the maximum resource requirement from left to right and from right to left by using a resource requirement dynamic table as an optimization time interval; and sorting the non-critical work in the time interval according to the following method, and then ranking the last work in TF_iWithin range, optimized (or right-shifted) after that period; then continuing to optimize according to the method; when the optimization is carried out until no optimizable non-key work exists, comparing the resource requirement after each step of optimization with the resource requirement in the relative most time period, wherein the relative least resource requirement is the resource requirement with unchanged construction period and relatively least resource requirement of the combined project;

then, the resource demand dynamic table respectively adopts the left-to-right and right-to-left resource demand searching phaseTaking the relative most time period of resource requirement outside the most time period as an optimized time period; and sorting the non-critical work in the time interval according to the following method, and then ranking the last work in TF_iWithin range, optimized (or right-shifted) after that period; then continuing to optimize according to the method; when the optimization is carried out until no optimizable non-critical work exists, comparing the resource requirement after each step of optimization with the resource requirement in the relative most time period, wherein the relative least resource requirement is the resource requirement of the combined project, the construction period is unchanged, and the resource requirement is relatively least; until the requirements of organization management and target control are met; then, the optimization results of the time interval with the most resource demands are searched from left to right and from right to left, and a better scheme is selected.

(1)(TF_i- Δ t) ≧ 0 and (TF)_i- Δ t) is small;

(2)(TF_i- Δ t) are identical, FF_iSmall;

(3)FF_ialso, same as ES_iEarly;

(4)ES_ialso, r is the same_iMore than one;

(5)r_ialso, t is the same_iLong;

(9)υ_FIN ²also, v is the same_i ²Large;

(10)υ_i ²also, σ_i ²Large;

(11)σ_i ²also, as per workThe relative importance degree of the project organization management and the target control plan or the project organization management and the target control plan system is ranked, and the relative importance is before;

note: Δ t — time of job optimization (or right shift).

And each optimization step comprises:

(1) combining project organizational management with goal control plans in a project with the start time of the optimized work as its earliest possible start time (ES)_i) Calculating time parameters again, redrawing a Gantt chart or an image progress chart of the time parameters, counting a resource requirement dynamic table, and then continuously optimizing according to the method;

(2) combining project organization management and target control multi-level planning system in a project, optimizing each step by taking the start time of the optimized work as the earliest possible start time (ES) of the work_i) After the time parameters of the system of the project organization management and target control multi-level plan are calculated again according to the reverse construction period control method, the construction period of the organization management and target control plan of each sub project in the second level plan is added with the total time difference (TF) of the sub projects in the first level organization management and target control plan_i) The organization management of each sub item in the secondary plan and the time parameter calculation of the target control plan are carried out again; then, the construction period of each single project organization management and target control plan in the three-level plan is added with the total time difference (TF) of the single project organization management and target control plan in the two-level organization management and target control plan_i) Carrying out organization management of each single item in the three-level plan and time parameter calculation of the target control plan again; redrawing the Gantt chart or the image progress chart, counting the resource requirement dynamic table, and then continuing to optimize according to the method.

The lapping relation is the work of STS, FTF, STF, STS and FTF, STS and STF, and is optimized according to one work in the optimization process.

The method is characterized in that the construction period of each type of project combination is unchanged, the resource optimization with the aim of relatively minimum resource demand is realized, and the method is used for optimizing one or more time periods with relatively maximum resource demand except the time period with relatively maximum resource demand; the purpose and the function are as follows: the resource demand of the time period with the most resource demand is a main basis for determining scales of related auxiliary facilities, mechanical equipment, turnover tools, materials and the like; because the proportion of the time interval with the most resource demands to the whole organization management and target control planning cycle is very small, the scales of related auxiliary facilities, mechanical equipment, turnover tools, materials and the like are determined according to the resource demands in the time interval with the most resource demands, and the scales are obviously unreasonable or uneconomical; aiming at the resource demand of one or more time periods with the most resource demand or the relative most resource demand, technology and organizational measures are adopted to meet the requirements of organizational management and target control, the resource demand for determining the scales of relevant auxiliary facilities, mechanical equipment, turnover tools, materials and the like is reduced, and the method is undoubtedly an effective method for mining the potential saving and improving the economic benefit.

Claims

1. A method for optimizing the minimum and relative minimum of any project combination resources by a comprehensive planning method is characterized by comprising the following steps: the method realizes a complete scheme that various projects or tasks are organized, managed and targeted to control plans and/or the project organization management and targeted to control multi-level plan system is established by adopting step-by-step decomposition and making the organization management and targeted to control plans at all levels respectively, and the project organization management and targeted to control multi-level plan system is not changed in construction period, has minimum resource requirement and is relatively least optimized under the condition of any combination, and is realized by the following steps:

the multi-level plan system takes the project to be decomposed into three levels of projects, single projects and specific work step by step, establishes a project organization management and target control multi-level plan system by making various levels, various organization management and target control plans as an example, and explains the specific method of the invention:

the first-level decomposition is carried out, and a first-level organization management and target control plan of the project is formulated, namely the project organization management and target control plan;

performing secondary decomposition, and respectively making a secondary organization management and target control plan of the project, namely each sub-project organization management and target control plan;

three-level decomposition, namely respectively making three-level organization management and target control plans of projects, namely each single project organization management and target control plan;

making various levels, various organization management and target control plans according to the method, and establishing a project organization management and target control multi-level plan system;

step (1) according to each project organization management and target control plan in the combination and/or step-by-step decomposition, each level respectively formulates the organization management and target control plan, establishes a project organization management and target control multi-level plan system, and respectively draws a Gantt chart or an image progress cross-track chart;

step (2) according to each project organization management and target control plan in the combination and/or a Gantt chart or an image progress cross-road chart of a project organization management and target control multi-level plan system, a resource demand dynamic summary table is counted;

step (3) according to each project organization management and target control plan and/or project organization management and target control multilevel plan system in the combination, a Gantt chart or an image progress crosswalk chart thereof and a resource demand dynamic summary table, searching a resource demand maximum time period from left to right and from and to the left respectively by the resource demand dynamic summary table as an optimization time period; sequencing the relative importance degree of the non-key work in the time period, wherein the relative importance degree is ranked in front; optimizing the last job within the total time difference range to be carried out after the period; then, the starting time of the optimized work is taken as the earliest possible starting time, and the calculation of the time parameters of the related project organization management and target control plan or the project organization management and target control multi-level plan system is carried out again; redrawing a Gantt chart or an image progress cross-track chart and carrying out statistics on a resource demand dynamic table; then, continuing to optimize according to the optimization method until no optimizable non-key work target exists;

after the optimization in the step (4) is finished, comparing the resource demand of the time period with the maximum resource demand after each step of optimization, and selecting the optimization with the relatively minimum resource demand of the time period with the maximum resource demand as an optimization result, namely the optimization result with unchanged project period and minimum resource demand for any combination of projects;

if the resource requirement of the combined project resource requirement dynamic table in the relative most time period of the resource requirement is expected to be further reduced, the optimization is continued according to the following steps and methods:

step (5-1) according to each project organization management and target control plan in the combination and/or step-by-step decomposition, respectively making an organization management and target control plan at each level, establishing a project organization management and target control multi-level plan system, and respectively drawing a Gantt chart or an image progress cross-track chart;

step (5-2) according to each project organization management and target control plan in the combination and/or a Gantt chart or an image progress cross-track chart of a project organization management and target control multi-level plan system, a resource demand dynamic summary table is counted;

step (5-3) according to each project organization management and target control plan and/or project organization management and target control multilevel plan system in the combination, a Gantt chart or an image progress crosswalk chart thereof and a resource demand dynamic summary table, and respectively searching a resource demand relative most time period from left to right and from left to right to serve as an optimization time period; sequencing the relative importance degree of the non-key work in the time period, wherein the relative importance degree is ranked in front; optimizing the last job within the total time difference range to be carried out after the period; then, the starting time of the optimized work is taken as the earliest possible starting time, and the calculation of the time parameters of the related project organization management and target control plan or the project organization management and target control multi-level plan system is carried out again; redrawing a Gantt chart or an image progress cross-track chart and carrying out statistics on a resource demand dynamic table; then, continuing to optimize according to the optimization method until no optimizable non-key work target exists;

after the optimization in the step (5-4) is finished, comparing the resource demand with the resource demand in the relatively most time period after the optimization in each step, selecting the optimization with the resource demand in the relatively least time period as an optimization result, then applying an index for balancing the balance of the organization management and the target control plan or the balance of resource consumption, comparing the optimization results of searching the resource demand in the relatively most time period from left to right and from right to left, and selecting an optimized scheme as the optimization result of keeping the construction period of the organization management and target control multi-level plan system unchanged and having the relatively least resource demand;

step (6-1) according to each project organization management and target control plan in the combination and/or step-by-step decomposition, respectively making an organization management and target control plan at each level, establishing a project organization management and target control multi-level plan system, and respectively drawing a Gantt chart or an image progress cross-track chart;

step (6-2) according to each project organization management and target control plan in the combination and/or a Gantt chart or an image progress cross-track chart of a project organization management and target control multi-level plan system, a resource demand dynamic summary table is counted;

step (6-3) according to each project organization management and target control plan and/or project organization management and target control multilevel plan system in the combination, a Gantt chart or an image progress crosswalk chart thereof and a resource demand dynamic summary table, and respectively searching a resource demand relative most time period from left to right and from left to right to serve as an optimization time period; sequencing the relative importance degree of the non-key work in the time period, wherein the relative importance degree is ranked in front; optimizing the last job within the total time difference range to be carried out after the period; then, the starting time of the optimized work is taken as the earliest possible starting time, and the calculation of the time parameters of the related project organization management and target control plan or the project organization management and target control multi-level plan system is carried out again; redrawing a Gantt chart or an image progress cross-track chart and carrying out statistics on a resource demand dynamic table; then, continuing to optimize according to the optimization method until no optimizable non-key work target exists;

after the optimization in the step (6-4) is finished, comparing the resource demand with the resource demand in the relatively most time period after the optimization in each step, selecting the optimization with the resource demand in the most time period with the resource demand in the relatively most time period as an optimization result, then applying an index for measuring the balance of the organization management and the target control plan or the balance of resource consumption, comparing the optimization results of searching the resource demand in the relatively most time period from left to right and from right to left, and selecting an optimized scheme as the optimization result of keeping the construction period of the organization management and target control multi-level plan system unchanged and having the relatively least resource demand;

until the requirements of organization management and target control are met.

2. The method of claim 1, wherein the categories of items are selected from a group consisting of:

(1) according to the types of sub-projects (single project and specific work) decomposed by projects or tasks, the projects (the sub-projects and the single projects) are divided into a positive type, a non-positive type and a mixed type;

(2) according to the type of the lap joint time distance between the sub-projects (single project and specific work) decomposed by the projects or tasks, the project (sub-projects and single project) organization methods are divided into a positive type, a negative type and a mixed type;

(3) various project organization management and target control plans and various project organization multi-level plan systems, wherein each level and each organization management and target control plan comprises:

1) positive type projects (sub-projects and single projects), and organization management and target control plans made by adopting a positive type organization method;

2) positive type projects (sub-projects and single projects), and organization management and target control plans made by adopting a non-positive type organization method;

3) affirming type projects (sub-projects and single projects), and adopting an organization management and target control plan formulated by a mixed stereotype organization method;

4) non-positive projects (sub-projects and single projects), and organization management and target control plans made by adopting a positive organization method;

5) non-positive projects (sub-projects and single projects), and an organization management and target control plan made by adopting a non-positive organization method;

6) non-positive projects (sub-projects and single projects), and an organization management and target control plan made by adopting a mixed fixed organization method;

7) mixed projects (sub-projects and single projects), and an organization management and target control plan made by adopting a positive organization method;

8) mixed projects (sub-projects and single projects), and an organization management and target control plan made by adopting a non-affirmative organization method;

9) mixed projects (sub-projects and single projects) adopt a mixed organization method to make an organization management and target control plan.

3. The method of claim 1, wherein the optimization method for fewest and relatively fewest arbitrary project combinations of resources in a pool comprises: the project organization management and target control plan system established by respectively formulating the organization management and target control plan by stage decomposition and each stage is optimized as follows:

(1) adding the total time difference of the project in the first-level organization management and target control plan to the construction period of the organization management and target control plan of each second-level project, and then calculating the time parameters of the organization management and target control plan of each second-level project again;

(2) and adding the total time difference of the single project in the secondary organization management and target control plan to the construction period of the organization management and target control plan of each single project in the third stage, and then recalculating the time parameters of the organization management and target control plan of each single project.

4. The method of claim 1, wherein the optimization method for pooling resources of any combination of items is characterized in that the optimization method for any combination of items comprises: the method comprises the steps of carrying out unified organization management and target control on various projects or tasks, organizing a management and target control plan and/or dynamically and randomly combining various project or task organization management and target control plan systems as a whole, namely, the projects are naturally quitted and combined, and the combined projects are added as required at any time.

5. The method of claim 1, wherein the optimization method for fewest and relatively fewest arbitrary project combinations of resources in a pool comprises: the dynamic summary table of the resource requirements is counted according to a Gantt chart or an image progress cross-track chart of each project organization management and target control plan and/or project organization management and target control multi-level plan system in the combination; selecting a main resource to be optimized to perform statistics and summarization of a resource demand dynamic table, and performing optimization of a resource target; for jobs that do not require such resources, the resource requirements are set to zero.

6. The method for optimizing the minimum and relative minimum resources of any project combination by the overall planning method as claimed in claim 1, wherein the method for calculating the time parameter of the project organization management and target control plan in the combination project comprises:

7. The method for optimizing any project combination resource minimum and relative minimum by a universalization method according to claim 1, wherein the combined project is controlled according to a stage-by-stage construction period, is decomposed stage by stage, and is respectively formulated into an organization management and target control plan at each stage, and the time parameter calculation method of the established project organization management and target control multi-stage plan system comprises the following steps:

1) project organization management and target control meter for immediately prior organization logical relationship expressionCalculating ES_i、EF_i；

(4) calculating the estimated variance of the second-level organization management and target control plan: calculating upsilon of the organization management and target control plan of each secondary sub-project by taking the estimated variance of the completion time of the organization management and target control plan of the three-level single project as the estimated variance of the construction period of the single project in the secondary organization management and target control plan_i ²；

(5) Calculating the estimated variance of the first-stage organization management and target control plan: calculating upsilon of the primary organization management and target control plan by taking the estimated variance of the completion time of the organization management and target control plan of the secondary project as the estimated variance of the project construction period and the project construction period in the primary organization management and target control plan_i ²；

(6) ES in project in primary organization management and target control plan_iThe estimated variance of (1) is the estimated variance of the starting time of project organization management and target control plan in the secondary organization management and target control plan;

(7) ES for single project in two-level organization management and target control plan_iThe estimated variance of the target control plan is the estimated variance of the starting time of the single-project organization management and the target control plan in the three-level organization management and the target control plan;

(8) in the three-level organization management and target control plan, the estimation variance of the completion time of the organization management and target control plan of a single project is the estimation variance of the completion time of the single project in the two-level organization management and target control plan;

(9) in the secondary organization management and target control plan, the estimation variance of the completion time of the organization management and target control plan of each project is the estimation variance of the completion time of each project in the primary organization management and target control plan.

8. The method for optimizing any project combination resource minimum and relative minimum by a universalization method according to claim 1, wherein the combined project is controlled according to reverse progressive construction period, is decomposed progressively, and is respectively formulated into an organization management and target control plan at each level, and the time parameter calculation method of the established project organization management and target control multi-level plan system comprises the following steps:

(3) Calculating the time parameter and the estimation variance according to the first-stage organization management and target control plan: and taking the estimated variance of the construction period and the construction period of the organization management and target control plan of each secondary project as the estimated variance of the construction period and the construction period of each project in the primary organization management and target control plan:

(4) ES in project in primary organization management and target control plan_iThe estimated variance of (1) is the estimated variance of the starting time of project organization management and target control plan in the secondary organization management and target control plan;

(5) are single-project atES in secondary organization management and target control plan_iThe estimated variance of the target control plan is the estimated variance of the starting time of the single-project organization management and the target control plan in the three-level organization management and the target control plan;

(6) in the three-level organization management and target control plan, the estimation variance of the completion time of the organization management and target control plan of a single project is the estimation variance of the completion time of the single project in the two-level organization management and target control plan;

(7) in the secondary organization management and target control plan, the estimation variance of the completion time of the organization management and target control plan of each project is the estimation variance of the completion time of each project in the primary organization management and target control plan.

9. The method of claim 1, wherein the method comprises the steps of: taking the start time of the optimized work as the earliest possible start time, and carrying out the organization management and the calculation of the target control plan time parameter again; for the project organization management and target control multi-level plan system in the combined project, after the calculation of the project organization management and target control multi-level plan system time parameters is carried out again according to the reverse construction period control method, the construction period of the organization management and target control plan of each sub project in the second level plan is added with the total time difference (TF) of the sub projects in the first level organization management and target control plan_i) The organization management of each sub item in the secondary plan and the time parameter calculation of the target control plan are carried out again; then, the construction period of each single project organization management and target control plan in the three-level plan is added with the total time difference (TF) of the single project organization management and target control plan in the two-level organization management and target control plan_i) And the organization management of each single item in the three-level plan and the time parameter calculation of the target control plan are carried out again.

10. The method of claim 1, wherein the optimization method for fewest and relatively fewest arbitrary project combinations of resources in a pool comprises: for the use of STS (LT) according to the process requirements_i）、FTF（LT_j）、STF（LT_i，LT_j) STS and FTF (LT)_i，LT_j) STS and STF (LT)_i，LT_i’，LT_j) FTS and STF (LT, LT)_i，LT_j) An organizational task is optimized as a task.