Project schedule tracking adjustment method and system based on PERT

A technology of project schedule and adjustment method, which is applied in the direction of instruments, data processing applications, office automation, etc., and can solve problems such as low efficiency, lack of project consideration, and poor rationality

Active Publication Date: 2017-05-10
STATE GRID SHANDONG ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In large-scale construction projects, due to the complexity of the structure of the construction network diagram, most of the schedule planning methods adopt heuristi

Method used

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  • Project schedule tracking adjustment method and system based on PERT
  • Project schedule tracking adjustment method and system based on PERT
  • Project schedule tracking adjustment method and system based on PERT

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Embodiment Construction

[0058] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0059] The system structure of the present invention is as figure 1 shown. The structure is divided into data input module, preprocessing module, schedule module and tracking adjustment module.

[0060] figure 2 It is an overall flow chart of the present invention, image 3 Create a flow chart of the calculation example for the schedule, as shown in the figure. The specific steps to realize the PERT schedule planning method based on the improved time parameter estimation are as follows:

[0061] 1) Estimate the construction period of each process in the network plan diagram of a certain project code number according to the most pessimistic construction period b, select the construction path with the largest total construction period as the critical path, and express the obtained critical path as 1→2→3→4→ 5. The key process flow chart is as follows...

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Abstract

The invention discloses a project schedule tracking adjustment method and a system based on a PERT. With the planned project duration complying with beta distribution as a basis, a scale principle estimated to be followed by time parameters is demonstrated, a method of replacing the most optimistic time by the minimum time for resource allocation consideration is brought forward, and an estimation basis for time parameters is cleared; a fitting method is adopted to solve the beta distribution corresponding to the time parameters; and finally, a cost-projection duration linear model is further built, according to the beta distribution probability constraints and given project duration float requirements, a schedule plan is solved, and more reasonable schedule plan making is realized. Problems that schedule plan deviation is likely to happen as the time parameter estimation scale is inaccurately mastered and project resource constraints are not considered in the network PERT can be solved, and the method and the system are applicable to scheme plan making and tracking adjustment for a large construction project.

Description

technical field [0001] The invention relates to a PERT-based project progress tracking and adjusting method and system. Background technique [0002] As the current project owners have higher and higher requirements for the project construction party, in order to ensure that the project is completed as required, the project construction party must formulate a reasonable project schedule, and track the actual progress of the project in real time and make timely corrections and adjustments. The planning and adjustment of the project are inseparable, but in the existing methods or technologies, the focus is on the formulation of the initial project plan, while the adjustment plan is mostly heuristic and depends on the experience of the construction party, lacking a linkage system with the planning. [0003] PERT (Program Review Technique) is widely used in the method of project schedule formulation. PERT is a network planning and evaluation technology that considers the uncert...

Claims

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Application Information

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IPC IPC(8): G06Q10/10
CPCG06Q10/103
Inventor 刘志清高浩瀚张永武张映晖刘家远张学凯方敬韬刘佳刘效真
Owner STATE GRID SHANDONG ELECTRIC POWER
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