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研究生：	王子紳 Wang, Zih-Shen
論文名稱：	預力混凝土橋樑設計自動化程式之建立 Development of the Prestressed Concrete Bridge Design Program
指導教授：	朱聖浩 Ju, Shen-Haw
學位類別：	碩士 Master
系所名稱：	工學院 - 土木工程學系 Department of Civil Engineering
論文出版年：	2009
畢業學年度：	97
語文別：	英文
論文頁數：	195
中文關鍵詞：	斷面深度、LUD 、跨徑長度、自動化程式、連續橋、橋樑最佳化設計、簡支橋、懸臂橋樑設計、預力混凝土橋樑設計
外文關鍵詞：	Prestressed concrete bridge design, Span length, Section depth, Continuous bridges, Cantilever bridge design, Optimal bridge design, Automation program, LUD, Simply supported bridges
相關次數：	點閱：203 下載：8
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預力混凝土橋樑是目前國內外最普遍使用的橋樑形式之一，它不僅可以建造比混凝土橋樑更長的跨徑，也有著比鋼橋造價便宜的優點，因此本文發展一套自動化預力混凝土橋設計之程式，藉助個人電腦，便可以在短時間內有效率的設計出符合需求的預力混凝土橋樑。
本程式GBRIDGE附屬於Micro-SAP Version-III之下，設計程式採用最新401-96中國土木水利學會出版之混凝土工程設計規範，與交通部民國90年出版之公路橋梁設計規範。程式只需輸入少許設計參數，即可執行橫向與縱向分析並列出設計結果、數量統計與錯誤。此外，本文提供一種可以找出橋樑最佳化設計之方法，並藉由此方法研究簡支、連續橋樑與適用橋跨長度之關係；簡支橋樑長度與適用斷面深度之關係；與使用LUD裝置於橋墩之優點。所得之趨勢可作為橋樑經濟性設計之參考。
此外，由於懸臂橋樑之特殊施工方式有別於其他施工法須做不同之分析，故本文亦發展一套專用於懸臂橋樑分析設計之子程式GBDCAN，該程式針對每個施工階段結構模型與預力鋼腱之施拉等因素皆作詳細之考量。本文並於最後附上懸臂橋範例加以說明。

Prestressed concrete bridge is one of the generally used bridge types in domestic and foreign at present. It not only can construct longer span than the concrete bridges but also have the advantage of that the cost is cheaper than the steel bridges. Therefore, this study develops a prestressed concrete bridge design program. It can efficiently design the bridge which is conformed to our requirements.
The program GBRIDGE is attached to the program Micro-SAP Version-III. The design program adopts the newest specification: 401-96 Concrete engineering specification which was published by Chinese Institute of Civil and Hydraulic Engineering, and Highway bridge design specification which was published by Ministry of Transportation and Communications in 2001. The program just has to input few design data, and then it can execute the transverse and longitudinal analysis and show the design result, quantity statistic, and error message. Furthermore, this study proposes a method which can find the optimal bridge design. By using the method, some investigations such as the relationship between simply supported bridges, continuous bridges and the suitable span length of the bridge, the relationship between the span lengths of simply supported bridges and the section depths, and the advantages of using the LUD device on the bridges. The trends we get can be the reference of the bridge economic design.
In addition, although the method of cantilever bridges is different from other construction methods, it has to consider more advanced analyses. Accordingly, this study develops a subordinate program GBDCAN which is specially used for the cantilever bridge analysis and design. The program considers the factors such as every structural model of construction stage and the cable prestressed in every stage in detail. Finally, there are examples to illustrate and demonstrate the usability of the program.

Chapter 1 Introduction 1
1 Background and Propose 1
2 Literature Review 2
3 Brief Account of the Research 7
Chapter 2 Ordinary Prestressed Concrete Bridges 10
1 Introduction 10
2 Illustration of Bridge Types and Construction Methods 10
2.1 Cross Section Types 11
2.2 Construction Methods 14
3 Illustration of Design Procedure 17
4 Transverse Analysis and Design Concept of the Program	18
4.1 Determination of the Live-Load Moment 19
4.2 Determination of the Equivalent Live Load 24
4.3 Combination the Factored Loads 26
4.4 Reinforced Concrete Design 26
5 Longitudinal Analysis and Design Concept of the Program 27
5.1 Drawing up the Design Principle 28
5.2 Cable Arrangement 28
5.3 Computation of Cross Section Properties 29
5.4 Equivalent Load Due to Prestressed Forces 30
5.5 Computation of Prestress Losses 30
5.6 Checking the Allowable Stresses 31
5.7 Checking the Ultimate Moments 32
5.8 Shear and Torsional Strength Design 34
Chapter 3 Optimal Bridge Design 49
1 Introduction 49
2 Investigation of the Bridge Length Effect 49
2.1 Investigation Method 50
2.2 Illustration of the Compared Schemes 53
2.3 Results and Discussion 55
3 Investigation of the Bridge Section Dimensions Effect 59
3.1 Investigation Method 60
3.2 Illustration of the Compared Schemes 62
3.3 Results and Discussion 64
4 Advantages of Using the LUD Devices on Bridges 68
4.1 Introduction of the LUD Device 69
4.2 Program Design Concept of the LUD Device 70
4.3 Illustration of the Compared Schemes 71
4.4 Results and Discussion 72
5 Summary 73
Chapter 4 Cantilever Construction of Prestressed Concrete Bridges 91
1 Introduction 91
2 Cabling Arrangement 92
2.1 Outline of the Cantilever Beam Cables 92
2.2 Outline of the Integration Cables 94
3 Creep Redistribution of Moments 97
3.1 1-e Method 97
3.2 Aging Coefficient Method 100
3.3 Step-By-Step Method 101
4 Shrinkage and Creep Prediction Models 103
4.1 ACI Model Code (1993) 104
4.2 CEB-FIP Model Code (1990) 105
5 Camber and Deflection Evaluation 109
6 Analysis and Design Concept of the Program 112
Chapter 5 Examples of the Cantilever Bridges 121
1 Introduction 121
2 Example 1 121
3 Example 2 123
Chapter 6 Conclusions and Recommendations 130
1 Conclusions 130
2 Recommendations 132
Reference 134
Appendix A 輸入說明 139
Appendix B 懸臂橋輸入說明 162
Appendix C Partial Input and Output Files 164
                                    

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校外：2009-07-06公開

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