基於公共工程履約績效之最低價決標優化模式研究

A CONTRACT PERFORMANCE BASED MODEL TO ENHANCE LOWEST TENDER CONTRACTOR SELECTION FOR PUBLIC CONSTRUCTION PROCUREMENT

10.6652/JoCICHE.202210_34(6).0005

王志磊(Zhi-Lei Wang)；余文德(Wen-Der Yu)；張憲寬(Hsien-Kuan Chang)；鄭道明(Tao-Ming Cheng)

最低價決標 ； 市場效能彈性 ； 合約績效評估 ； 決標模式 ； Lowest Tender ； Market Price Elasticity of Performance ； Contract Performance Evaluation ； Contractor Selection Model

中國土木水利工程學刊

34卷6期（2022 / 10 / 01）

501 - 511

英文

公共工程採購最常用最低標決標，其具簡單、客觀及較少人為因素影響等特點，故獲多數機關青睞。然而最低標亦有其根本缺點，易使廠商為追求利潤而降低工程之品質與安全。為解決此一問題，本研究結合先前提出之市場效能彈性（E_m）分析及公共工程施工廠商履約評分資料，提出｢A+Q決標模式｣，以改進最低標之負面效應。經案例模擬驗證，本模式均能選出對業主較有利之廠商，不但保有最低標簡單、快速之特點，同時兼顧最有利標之優點。此外，本方法將廠商過去之績效加入評選，長期而言可鼓勵廠商積極提升履約績效，能促進營建產業朝更健康方向發展。

The "lowest tender (LT)" has been widely adopted in construction industry due to its simplicity, objectivity and less human involvement in the contractor selection process. However, the LT also suffers in its inevitable drawback of lowest price competitiveness that usually results in inferior quality compared with other methods. To tackle the disadvantages of traditional LT, this paper proposes an A + Q Contractor Selection Model (A + Q) based on previous model of Market Price Elasticity of Performance (E_m) and Historical Contract Performance Evaluation Data (HCPED) of the contractors to form a new contractor selection method for project owner. Based on the results of a case study with the HCPED of building projects and a set of simulated bidding data, the A + Q is shown to select the most advantageous contractor for the owner. The proposed A + Q does not only include the strengths of fast and streamline selection process of traditional LT, but also retain the benefits of the BV method. Moreover, the proposed A + Q tends to encourage the contractor in improving their quality and schedule performance by incorporating the past performance of the contractors into the selection process. As a result, the proposed A + Q has the potential to enhance traditional LT not only in terms of the benefit of the owner, but also for a healthier construction procurement market in the long run.

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