鋼筋混凝土柱側推分析之研究與探討

A Study on Pushover Analysis of Reinforced Concrete Columns

宋裕祺(Yu-Chi Sung) ； 劉光晏(Kuang-Yen Liu) ； 蘇進國(Chin-Kuo Su) ； 蔡益超(I-Chau Tsai) ； 張國鎮(Kuo-Chen Chang)

《建築學報》 46期 (2004/06) Pp. 47-65

摘要

本文針對單柱式與構架式鋼筋混凝土柱提出一套側推分析流程。分析方法以力學三大原則為基礎，同時考量軸力、撓曲與剪力等三種應力交互作用的理論模式，作為構材塑性鉸的訂定依據，繼而進行結構側推分析。分析結果並與國家地震工程研究中心和日本土木學會之實驗成果進行比對。本文所提方法可有效掌握單柱式鋼筋混凝土柱構材整體及局部行為，建構合理的非線性側推分析曲線；在構架式鋼筋混凝土柱方面，則提供一考慮軸力變化且不失準確性的簡化分析模式，對於鋼筋混凝土結構的耐震性能評估與多目標耐震性能設計將有所助益。本文成果冀能供為學術研究與實務設計參考之用。

關鍵字

側推分析 ； 鋼筋混凝土柱 ； 塑性鉸

並列摘要

This paper proposes a realistic approach on pushover analyses of reinforced concrete (RC) structures for single column or multiple-column bent. According to theoretical bases and the empirical information, axial force, bending, and shear interactions are considered to derive the properties of plastic hinge corresponding to three distinct failure modes of RC column members. A simplified methodology, considering the variation of axial force of column members during the pushover process of the structure with multiple-column bent, is also recommended for nonlinear analysis of RC buildings with efficiency as well as accuracy. Comparing the experimental results, the proposed approach has been verified in high precision and may be expected to facilitate the pushover analyses of RC structures.

並列關鍵字

pushover analysis ； reinforced concrete column ； plastic hinge

參考文獻

Arthur H. Nilson(2003).Design of Concrete Structures.New York:McGraw-Hill.

Aschheim, M.,Moehle, J.P.(1992).Shear Strength and Deformability of Reinforced Concrete Bridge Columns Subjected to Inelastic Cyclic Displacement.(Report No. UCB/EERC-92/04, Earthquake Engineering Research Center).

ATC-40(1996).Seismic Evaluation and Retrofit of Concrete Building.California:Applied Technology Council.

Computers and Structures, Inc.(2002).SAP 2000.(Integrated Finite Element Analysis and Design of Structures, Analysis Reference Manual, Version 8.12).

FEMA(1997).NEHRP Guidelines for the Seismic Rehabilitation of Buildings.Washington, D.C.:Federal Emergency Management Agency.