高层建筑支腿系统抗震设计

发布时间：2021-12-11 09:57

　　支腿系統是一種有效的結構方案,常用於高層建築中,以提高剛度,並將所需的力矩分配到外柱上。儘管世界各地都在使用支腿結構系統,但還是缺少一個正式的地震設計程式。本文提出了一種等效的基於能量的設計過程（EEDP）來設計地震應用的支腿系統。利用能量平衡的概念,將彈性單自由度系統等同于等效非線性系統,利用塑性機制推匯出支腿系統的設計力。等效的基於能量的設計程式（EEDP）允許工程師設計的支腿牆建築,以達到不同的性能目標,在不同的地震危險性水準,這是理想的創造地震彈性的建築物。在加拿大溫哥華的一個假想網站上,設計了三個不同高度的模型式支腿牆建築。利用OpenSees對原型建築物的抗震性能進行了詳細的有限元模型研究。非線性時間歷史分析結果表明,該原型能夠滿足設計過程中指定的性能目標。最後,利用聯邦應急管理局P695方法對基於等效能量設計程式（EEDP）設計的支腿系統的抗震安全性進行了增量動態分析。結果表明,所提出的等效能量設計過程（EEDP）是設計支腿系統的一種有效方法,在該結構中可以達到足夠的安全裕度以防止坍塌,滿足多個性能目標。不帶反覆運算的不同危險級別。 

【文章来源】：东南大学江苏省 211工程院校 985工程院校 教育部直属院校

【文章页数】：87 页

【学位级别】：硕士

【文章目录】：
摘要
Abstract
Chapter 1 Introduction
    1.1 Literature Review
        1.1.1 History of Outrigger System
        1.1.2 Outrigger Design Considerations
        1.1.3 Existing Seismic Design Guideline for Outriggers
        1.1.4 Simplified Studies of Outrigger Systems
        1.1.5 Use of Fuses and Other Innovative Structural Components in Outrigger Systems
    1.2 Objective and Scope
    1.3 Thesis Organization
Chapter 2 Behavior of Outrigger Systems
    2.1 Theoretical Solution of Elastic Outrigger System Response Under Static Load
        2.1.1 Parameter Studies
        2.1.2 Comparison to Analysis Results
    2.2 Theoretical Solution of Elastic Outrigger System Response Under Dynamic Loads ….
        2.2.1 Conventional Beam Derivation
        2.2.2 Parameter Study
Chapter 3 Design Methodology for Outrigger Systems
    3.1 Conventional Design Approach
        3.1.1 Model and Analysis
        3.1.2 Design of Plastic Hinge
        3.1.3 Design of Outrigger
        3.1.4 Capacity-Design
    3.2 Equivalent Energy-Based Design Approach
        3.2.1 Define Performance Objectives
        3.2.2 Displacement Modification Factor
Chapter 4 Performance Assessment of Outrigger System under Seismic Loads
    4.1 Seismic Hazard
    4.2 Ground Motion Selection
    4.3 Prototype Buildings
    4.4 Nonlinear Modelling Technique
        4.4.1 Modelling Assumptions
        4.4.2 Materials
        4.4.3 Elements
    4.5 Nonlinear Time-History Analysis Results
        4.5.1 Results for Tower A
        4.5.2 Results for Tower B
        4.5.3 Results for Tower C
    4.6 Comparison to Performance Objectives
Chapter 5 Verification of Design Procedure for Outrigger Systems
    5.1 Overview of FEMA P695 methodology
    5.2 Application to prototype outrigger buildings
        5.2.1 Nonlinear Pushover Results
        5.2.2 Incremental Dynamic Analysis Results
Chapter 6 Conclusion
    6.1 Conclusions and Significance
    6.2 Future research
Reference



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