科技的進步影響了建築業的發展，建築資訊模型(Building Information Modeling) 已經逐漸成為每一個建築專案的主要設計工具，隨著建築項目的複雜度提高，建築資訊模型的應用需要跨領域的知識交流才得以協作完成。跨領域的知識交流往往會遇到一些問題，像是溝通不良、傳遞資訊有誤等，因此在1995 年野中提出的知識螺旋理論中，外化促進了設計合作中的知識交流，因此模型庫是建築行業的必要資訊。然而，目前的模型庫是中心化系統，導致數據篡改和版權糾紛，提供的模型不能滿足當前建築項目的要求。為此，本文開發了基於區塊鏈的BIM 協同參數模型庫，實現知識共享。參數模型庫中的參數化模型可以通過調整參數靈活的應用到項目中。區塊鏈網絡提供可靠的存儲並確保
上傳順序。在這項研究中，基於所提出的系統通過以太坊創建了一個網站，並將其應用於幕牆項目。

A building lifecycle consists of multiple domains, and the application of building information modeling (BIM) requires the cross-domain exchange of knowledge. In knowledge spiral theory proposed by Nonaka, externalization facilitates knowledge exchange in designing cooperation, so a model library (ML) is the necessary information for the construction industry. However, current MLs are centralized systems, leading to data tampering and copyright disputes and the provided model cannot meet the requirements of the current building project. Therefore, this article developed a blockchain-based parametric model library for BIM collaboration to realize knowledge sharing. The parametric model in our model library can be flexibly applied to the project by adjusting the parameters. A blockchain network provides reliable storage and ensure the upload sequence. In this research, a website was created based on the proposed system through Ethereum and applied it to a curtain wall project.

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