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      BIM 選課中心 APP下載
      當前位置: 首頁 > BIM > BIM考試動態 > BIM答疑精選 > BIM與計算機輔助設計(CAD)的比較

      BIM與計算機輔助設計(CAD)的比較

      發布時間:2018年03月13日 15:17:29 來源:環球網校 點擊量:

      【摘要】BIM軟件進行一次修改,則平面、立面、剖面、三維視圖、明細表等都自動進行相關修改,實現了一處改動,處處改動。

        BIM 是繼CAD之后的新生代

        1.CAD技術表達的各個建筑元素之間沒有相關性,而BIM技術中的構件則相 互關聯。例如刪除一面墻,墻上的窗和門跟著自動刪除;刪除一扇窗,墻上原來窗的位置會自動恢復為完整的墻。

        2.CAD技術中的點、線、面等無專業意義。而BIM技術的基本元素,如:墻、 窗、門等,不但具有幾何特性,同時還具有建筑物理特征和功能特征的構件。

        3.CAD技術中的點、線、面等無專業意義。而BIM技術的基本元素,如:墻、 窗、門等,不但具有幾何特性,同時還具有建筑物理特征和功能特征的構件。

        BIM相對于CAD的優勢有以下內容:

        1.協調性:各行業項目信息易出現“不兼容”現象,如:管道與結構沖突, 預留的洞口沒留或尺寸不對等情況。使用有效BIM協調流程進行協調綜合,減少不合理變更方案或問題變更方案。

        2.可視化:模型三維的立體實物圖形可視,項目設計、建造、運營等整個 建設過程可視,可方便進行更好的溝通、討論與決策。

        3.模擬性:包括3D畫面的模擬,能效、緊急疏散、日照、熱能傳導等的模 擬,4D(時間上)的模擬,5D(造價控制上)的模擬,對地震人員逃生及消防人員疏散等日常緊急情況的處理方式的模擬。

        4.可出圖性:如綜合管線圖、綜合結構留洞圖、碰撞檢查偵錯報告和建議 改進方案等

        實用的施工圖紙。

        5.優化性: BIM及與其配套的各種優化工具能對項目進行可能的優化處理 如:利用模型提供的各種信息來優化幾何、物理、規則、建筑物變化以后的各種情況信息。

        CAD軟件在平面上進行一次修改,則其它各面都需要進行人工修改,如果 操作不當會出現不同角度視圖不一致的低級錯誤。而BIM軟件進行一次修改,則平面、立面、剖面、三維視圖、明細表等都自動進行相關修改,實現了一處改動,處處改動。
       

      分享到: 編輯:張美遷

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