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 http://eng.midasuser.com/products/img_common/bu_1.gif特殊橋分析

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif施工階段分析(Construction Stage Analysis)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif移動荷載分析(Moving Load Analysis)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif合成斷面橋梁分析(Analysis of Composite Girder Bridges)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif整體橋梁分析(Analysis of Integral Bridges)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif預力箱型梁橋梁分析(Analysis of PSC Box Bridges)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif節塊推進工法橋梁施工階段分析(ILM Construction)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif平衡懸臂工法橋梁施工階段分析(FCM Construction)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif支撐先進工法橋梁施工階段分析(MSS Construction)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif預力箱型梁橋梁後處理(Post-processing of PSC Box Bridges)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif斜張橋分析(Cable-Stayed Bridge Analysis)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif懸索橋分析(Suspension Bridge Analysis)

http://eng.midasuser.com/products/img_common/Features_menu_ico01.gif水化熱分析(Heat of Hydration Analysis)

 

http://eng.midasuser.com/products/img_common/bu_1.gifConstruction Stage Analysis

施工階段分析功能可以讓使用者在連續的施工步驟中建立與移除桿件元素、改變邊界條件與荷重。確切而言,施工階段分析是考慮臨時結構的建造與拆除步驟、複合橋梁分析以及混凝土水化熱分析。

http://eng.midasuser.com/products/img_common/bu_2.gif輸入施工階段

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依順序輸入每一個施工階段的構件、邊界條件等資料。

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依時間步驟安排新增與移除荷載。

 

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      http://eng.midasuser.com/products/img_common/bu_1.gif階段樹狀圖

 

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階段樹狀圖以系統化、綱要式的列舉出模型中全部施工階段的順序。

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簡單快速的修正某一施工階段內容。

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簡單快速的刪除某一施工階段或插入一個新的施工階段。

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可以修正施工階段的順序。

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工作樹狀圖可以幫助使用者有條不紊的檢查與修改每一個施工階段的結構與荷載條件。

 

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      http://eng.midasuser.com/products/img_common/bu_1.gif特定施工階段分析

可以自行設定某一施工階段作為最終施工階段,使用者可以在各個施工階段執行歷時分析或車輛移動荷載等分析。


      http://eng.midasuser.com/products/img_common/bu_1.gifMoving Load Analysis

http://eng.midasuser.com/products/img_common/bu_2.gif移動荷載資料庫

midas Civil 內建多國規範的車輛載重,使用者也可以自訂不同的車輛載重。

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http://eng.midasuser.com/products/img_common/bu_2.gifMoving Load Tracer

移動荷載追蹤器會判斷對結構造成最大影響的移動荷載位置,可用圖形表示梁的內力與應力,也可針對板或實體的局部座標系計算節點力量總和或元素內特定位置的內力。

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       http://eng.midasuser.com/products/img_common/bu_2.gifTransverse Analysis Model Wizard

midas Civil根據橋梁的縱向梁單元模型自動生成橫向分析模型的功能。選擇縱向模型的任意位置,利用該位置的截面數據自動生成二維橫向分析模型。且可以輸入作用在橫向分析模型的荷載(恆荷載、移動荷載及其它荷載)、定義橫向模型的預應力鋼筋、普通鋼筋。

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      http://eng.midasuser.com/products/img_common/bu_1.gifAnalysis of Composite Girder Bridge

midas Civil可以檢核斷面於合成前與合成後的內力,可以省掉建立兩個分析模型與結果的麻煩

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http://eng.midasuser.com/products/img_common/bu_1.gifAnalysis of Integral Bridge

當一座橋梁無伸縮縫,視橋面板與其橋台、橋墩為一個整體,完全由橋台與橋墩的彈性去吸收橋面板的變形時,稱其為整體橋梁。整體橋梁最重要的關鍵點是由溫度差異引起的橋面板變形,橋面板的收縮會影響橋墩與回填土間的力學行為,橋面板膨脹會造成回填土夯實,橋面板收縮會造成回填土滑動。多次的夯實與滑動後,地盤反力模數與壓力分佈會隨深度成比例變化。經過無限次的夯實與滑動後,地盤反力模數會趨於常數,可依B.M. Lehane導出的公式設定土壤彈簧係數,側向土壤彈簧為只受壓彈簧,垂直向彈簧為線彈性彈簧。

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      http://eng.midasuser.com/products/img_common/bu_1.gifAnalysis of PSC (Prestressed Concrete) Box Bridge

http://eng.midasuser.com/products/img_common/bu_2.gifTime Dependent Material

時間依存材料為考慮混凝土彈性模數因材齡而變化,因乾縮、潛變造成的長期撓度。

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       http://eng.midasuser.com/products/img_common/bu_2.gifSectional Property Calculator

斷面特性計算器是有效、快速計算複雜截面截面特性的工具。計算出的截面特性可以方便的通過截面輸入功能導入到結構模型中。下面總結了SPC(Sectional Property Calculator)的主要方面:

l   使用輸入(Import)功能可以從AUTOCAD的DXF文件。

l   各種建模功能簡化了數據的輸入。

l   SPC可以對輸入的截面進行完全自動的網格劃分。

l   能夠計算由不同材料組成的聯合截面。

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       http://eng.midasuser.com/products/img_common/bu_2.gifPSC Box Section & Tapered Section

midas Civil可以快速又符合實際的建立與分析多種預力箱形斷面的預力橋梁。

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以平衡懸臂工法橋梁為例,斷面性質會自動依兩端斷面與變化曲率做計算。

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可以設定縱向與橫向變化線形。

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可以修改自動生成的斷面。

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會依照設計規範計算有效寬度並運用於分析 

 

http://eng.midasuser.com/products/img_common/bu_2.gif放置預力鋼腱

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3D座標輸入鋼腱位置並計算鋼腱預力損失

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可設定先拉法、後拉法、握裹、非握裹、內置與外置的預力種類

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鋼腱位置不需另設節點

 

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鋼腱可以佈設在任何位置,並可查看構件的橫斷面以檢驗佈設位置是否正確。

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瞬時預力損失包含錨定端滑動、鋼腱與套管摩擦與混凝土彈性收縮。

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長時預力損失包含乾縮、潛變與鋼腱鬆弛。

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載重與溫度差異會造成鋼腱預力的變化。

 


 

      http://eng.midasuser.com/products/img_common/bu_1.gifILM Construction(節塊推進工法)

http://eng.midasuser.com/products/img_common/bu_2.gifILM Model Wizard

使用節塊推進工法橋梁建模精靈須要依據橋梁規劃內容輸入節塊數量與橋梁配置狀況,建立節塊的施工階段可以在設定節塊數量時同時設定好。

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輸入施工階段的天數,程式會自動設置載重與混凝土材齡。

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通過用戶輸入的控制點生成曲率最小的曲線鋼束。

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內建節塊推進工法常見鋼腱佈設種類。

 

http://eng.midasuser.com/products/img_common/bu_2.gifILM Bridge Stage Wizard

輸入施工天數與鼻梁長度,程式會自動設定推進過程邊界條件細部施工步驟。

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在推進過程,施工階段僅表示邊界條件改變,沒有增加施工天數。

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當所有施工階段可以放在同一個分析檔案時,可以輕鬆明瞭的在每個施工階段建立與移除構件、邊界條件、荷載。

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在分析過程中會考慮乾縮與潛變的影響。

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節塊推進工法橋梁建模精靈也可以建立曲橋形式。

 


 

      http://eng.midasuser.com/products/img_common/bu_1.gifFCM Construction(平衡懸臂工法)

http://eng.midasuser.com/products/img_common/bu_2.gifFCM Bridge Wizard

透過平衡懸臂工法橋梁建模精靈,使用者只須定義斷面形式、鋼腱位置與橋梁配置,就可以完成建模工作。

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      http://eng.midasuser.com/products/img_common/bu_1.gifMSS Construction(支撐先進工法)

http://eng.midasuser.com/products/img_common/bu_2.gifMSS Bridge Wizard

藉由支撐先進工法/滿堂支架法建(MSS/FSM)模精靈簡易的完成結構模型與施工階段。

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http://eng.midasuser.com/products/img_common/bu_1.gifPSC Box Bridge後處理

http://eng.midasuser.com/products/img_common/bu_2.gif後處理

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在曲橋橫斷面的左右兩邊產生最大應力

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考慮移動荷載在結構中產生的最大內力

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可圖形化的顯現每個施工階段的內力、應力、位移、反力等分析結果。

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可顯現每個施工階段分析結果的動畫

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輸出特定斷面的細部結果

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以曲線與時間變化顯示預力損失

 

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http://eng.midasuser.com/products/img_common/bu_1.gifCable-Stayed Bridge Analysis

midas Civil 具有斜張橋的建模精靈,可以快速建立完成模型,並以初始平衡狀態得到最佳化的初始索力,也可以設定施工階段進行分析。

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可以建立對稱與非對稱斜張橋

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可以建立桁架形式或箱型形式的主梁

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可以建立直線式或曲線式的主梁

 

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http://eng.midasuser.com/products/img_common/bu_2.gif索力計算

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最佳化計算初始索力

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可設定多種束制條件去計算最佳化索力

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以未知載重係數(unknown load factors)滿足主塔與主梁的束制條件

 

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http://eng.midasuser.com/products/img_common/bu_2.gif索元素進行非線性分析

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以二力桁架桿或索元素的方式進行線性與非線性分析

 http://eng.midasuser.com/products/img_common/bu_3.gif索元素可以施加預拉力

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http://eng.midasuser.com/products/img_common/bu_2.gif考慮幾何勁度進行靜力與動力分析

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輸入斜張橋的初始荷載(initial forces)後組立幾何勁度

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考慮該幾何勁度後進行靜力與動力分析

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以最終階段進行特徵值分析

 

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http://eng.midasuser.com/products/img_common/bu_2.gif施工階段分析

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施工階段分析可以考慮幾何非線性的結構

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施工階段可以正裝或倒裝分析

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可轉換基本階段與最終階段(base stage & final stage)

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施工階段分析可以考慮P-Delta效應

 

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http://eng.midasuser.com/products/img_common/bu_1.gifSuspension Bridge Analysis

與一般結構不同,懸索橋由彎曲的索元素構成,有其特定的分析步驟,懸索橋建模精靈會自動計算最終狀態的索元素座標與拉力,並考慮索元素的非線性特性,在施工階段中也可以分析幾何非線性結構。

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http://eng.midasuser.com/products/img_common/bu_2.gif最終結構分析

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線性分析初始荷載(initial forces)下的幾何勁度(線性化分析有限變形)

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移動荷載分析(影響線分析與影響面分析)

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於各施工階段中顯現支承

 

http://eng.midasuser.com/products/img_common/bu_2.gifSuspension Bridge Wizard

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懸索橋包含主纜在內的所有座標會自動依懸垂、主梁自重等設計條件判斷

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於結構完成階段會自動計算主纜與吊索的拉力

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轉換主纜與吊索的拉力為初始載重(initial forces)去組立幾何勁度

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可以使用懸索橋建模精靈完成初始平衡階段並分析之

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使用懸索橋建模精靈定義完成初始平衡狀態後,可再進行最終結構和施工階段的分析

 

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http://eng.midasuser.com/products/img_common/bu_2.gif最終結構與施工階段分析結果

midas Civil 可以進行幾何非線性(大位移分析)與施工階段分析,會依據元素的內力與特定階段的變形作為接續階段的條件進行精確分析。

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http://eng.midasuser.com/products/img_common/bu_2.gif定義施工階段

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於施工階段對話框中指定每個施工階段的結構群組、邊界群組、載重群組

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結構中的臨時載重可在指定階段中作用或移除

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施工階段的狀態可已在模型圖中對應顯現

 

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http://eng.midasuser.com/products/img_common/bu_2.gif施工階段分析的結果

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每個施工階段均會計算其位移、內力與應力

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可以分析出作用於多個施工階段的臨時載重與風力作用的結果

 

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http://eng.midasuser.com/products/img_common/bu_1.gifHeat of Hydration Analysis

midas Civil 的水化熱分析可以考慮熱傳導與熱應力的影響,水化熱的施工階段分析可以考慮隨著混凝土材齡而變化的彈性係數、乾縮潛變、水管冷卻效果等效果。

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http://eng.midasuser.com/products/img_common/bu_2.gif混凝土溫度參數與時間依存參數

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http://eng.midasuser.com/products/img_common/bu_2.gif定義施工階段

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 http://eng.midasuser.com/products/img_common/bu_1.gif有限元素資料庫

桁架 (Truss)

可設定極限強度的只受壓元素 (Compression-only element with strength limit)

可設定極限強度的只受拉元素 (Tension-only element with strength limit)

間隙 (Gap)

(Hook)

彈性阻尼 (Viscoelastic Damper)

遲滯系統 (Hysteretic System)

橡膠支隔震系統 (Lead Rubber Bearing Isolator)

摩擦擺隔震系統 (Friction Pendulum System Isolator)

(Cable)

一般梁元素 (General Beam)

變截面梁元素 (Tapered Beam)

平面應力 (Plane Stress)

平面應變 (Plane Strain)

板元素(厚板/薄板、面內/面外厚度)  (Plate (Thick/Thin, In-plane/Out-of-plane Thickness, Drilling D.O.F, Orthotropic, Offset))

軸對稱元素 (Axisymmetric)

實體單元(四面體、楔形、六面體) (Solid Element (Hexagon, Wedge, Tetrahedron))

 

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http://eng.midasuser.com/products/img_common/bu_1.gif分析特色

midas Civil沒有節點數和單元數限制,對荷載和荷載組合的數量也沒有限制,而且提供可以連續分析多個模型的批次處理功能。

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靜力分析 (Static Analysis)
→線性靜力分析 (Linear Static Analysis)

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動力分析 (Dynamic Analysis)
→特徵值分析 (Free Vibration Analysis)
→反應譜分析 (Response Spectrum Analysis)
→歷時分析 (Time History Analysis)

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幾何非線性分析 (Geometric Nonlinear Analysis)
P-delta分析 (P-Delta Analysis)
大變位分析 (Large Displacement Analysis)

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材料非線性分析 (Material Nonlinear Analysis)
→Von-Mises, Tresca, Mohr-Coulomb & Drucker - Prager
石構
(Structural Masonry Analysis)

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挫屈分析 (Buckling Analysis)

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移動載重分析 (Moving Load Analysis)

→影響線分析 (Influence Line Analysis)

→影響面分析 (Influence Surface Analysis)

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熱傳導分析(傳導、對流、輻射) (Heat Transfer Analysis)
→穩態分析 (Steady State Analysis)
→瞬態分析 (Time Transient Analysis)

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水化熱分析 (Heat of Hydration Analysis)
→熱彈性分析 (Thermo-elastic Analysis)
→發展強度、潛變、乾縮、管冷分析 (Maturity, Creep, Shrinkage, Pipe Cooling)

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施工階段分析 (Construction Stage Analysis)
→時間依存材料特性(乾縮、潛變、硬化) (Time Dependent Material (Strength, Creep/Shrinkage))

CEB-FIP, ACI, PCA, INDIA, Eurocode…等規範
→邊界條件變化 (Boundary Group and Static Load Group)

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側推分析 (Pushover Analysis)

提供了四種基本的塑鉸性質(P, V, M & PMM),可以自己定義塑鉸性質,也可以讓程式根據構件的截面、材料、荷載狀態等,自動生成塑鉸性質

→具有FEMAEurocode、雙線性、三線性的塑鉸基本形

→可將塑鉸設定於鋼筋混凝土、鋼材、鋼骨鋼筋混凝土、石材構件
→力量或位移控制
→產生容量譜與最佳性能點 (Demand Spectrums/Performance Points)

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邊界非線性歷時分析 (Boundary Nonlinear Time History Analysis)

對建築物隔震和減震所使用的粘彈性消能器(Visco-elastic Damper)、間隙(Gap)、鉤(Hook)、遲滯系統(Hysteretic System)、鉛芯橡膠支撐隔震裝置(Lead Rubber Bearing Isolator)以及摩擦擺隔震裝置(Friction Pendulum System Isolator)等進行邊界非線性動力分析的功能

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非彈性歷時分析 (Inelastic Time History Analysis)

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其他分析
利用優化設計方法求未知荷載係數 (Unknown Forces)
→支座沉降分析 (Support Settlements)

→考慮鋼橋合成斷面合成前後斷面剛度變化的分析 (before and after Composite Actions)

 

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