| Summary: | 博士 === 雲林科技大學 === 工程科技研究所博士班 === 98 === In these years, supply chain or demand-supply collaboration is widely investigated and performed in industrial business. To present construction demand-supply issues, this study separately performs demand and supply planning of a construction precast project as two sub projects. Optimization techniques are adopted to support decision making with total cost in each sub projects.
The precast component demand is planned in construction project scheduling under resource-constrained environment as resource requirement. Resource characteristics are investigated to demonstrate a new sight of construction project scheduling. In addition, the critical resource chain, which originates from the Theory of Constraints, is proposed for uncertain environment of construction projects. With visualize figure of critical resource chain, key resource information is shaped according to project time. A project buffer is also adopted to handle project uncertainties. Otherwise, a rescheduling method is also proposed when the original schedule is inopportune.
The precast component supply is supported according to precast factory’s plan. The precast factory’s plan includes component production, storage, and transportation. Component storage is further investigated, because precast components are huge, heavy, and with various shape. The component zoning concept is proposed to group and store components. Various zones can be options before planning, and suitable zones will be selected then allocated into inventory space during optimization process with total cost. In addition, details of component storage and transportation are completely display base on optimized component zoning.
A component demand-supply contract is determined based on construction project scheduling and precast factory’s plan. When the contract is impossible to keep, rescheduling methods for both construction project scheduling and precast factory’s plan are also proposed. Furthermore, three common demand-supply situations are involved: (1) the construction project scheduling is the main plan; (2) the precast factory’s plan is the main plan; (3) collaboration.
This study plans demand-supply based on resource considerations. All decisions are made according to total cost during optimization. To overcome the uncertain environment of construction projects, the critical resource chain is proposed to enhance project stakeholders’ understanding on project schedules by outlining key resource information. In precast factory’s plan, component zoning not only provides a method in storage plan, but retains flexible ways to store components. Rescheduling methods are also available to adjust schedule or plan if required. Both demand-supply plans are transparent and independent. Base on case study, construction demand-supply issues are practiced and generally surveyed.
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