鋼筋混凝土含牆結構物非線性靜力分析之研究

A Nonlinear Static Analysis Study of a Rc Structure With Walls

陳信宏(Hsin-Hung Chen) ； 蔡益超(I-Chau Tsai)

《結構工程》 30卷2期 (2015/06) Pp. 61-85

https://doi.org/10.6849/SE.201506_30(2).0004

摘要

瞭解RC牆其側向載重-側向位移反應，乃是RC含牆結構物進行非線性靜力分析及評估其耐震能力的重要工作。本文說明如何適當地計算軸力－彎矩作用下RC牆之彎矩－彎曲位移反應及使用修正壓力場理論（MCFT）與考量RC牆高深比（Hin／Lw）之影響，計算軸力-剪力作用下RC牆之剪力-剪位移反應。經上述兩反應的結合，可以合理地決定RC牆於軸力－剪力－彎矩互制下之側向載重-側向位移反應。此外，本文於SAP2000或ETABS程式下，建立一6層RC含牆及一6層開氣窗RC含牆構架，說明如何以等值柱模擬RC牆，並設置相關之塑鉸以進行非線性靜力分析，提供給工程師於應用上作為參考。

關鍵字

RC牆 ； 等值柱 ； 側向載重－側向位移反應 ； 非線性靜力分析

並列摘要

Knowing a lateral load-lateral displacement response of an RC wall is an important work of executing nonlinear static analysis and evaluating earthquake-resistant capacity of an RC structure with RC walls. This paper explains how to calculate the moment-bending displacement response of an RC wall under axial load and moment properly, and calculate the shear-shear displacement response of the RC wall under axial load and shear by using the modified compression-field theory (MCFT) with considering the effect of the height-depth ratio (Hin/Lw). By integrating the moment-bending displacement response and the shear-shear displacement response, the lateral load-lateral displacement response of the RC wall under axial load-moment-shear interaction can be decided reasonably. In addition, to provide an application illustration for engineers, this paper establishes a 6 floor RC structure with walls and a 6 floor RC structure with walls containing windows to explain how to use an equivalent column model to simulate an RC wall on SAP2000 or ETABS nonlinear static analysis.

並列關鍵字

RC wall ； equivalent column ； lateral load-lateral displacement response ； nonlinear static analysis