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（長安大學建筑工程學院， 西安 710000）

［摘要］以受控搖擺橋墩為研究對象，研究其滯回性能和穩(wěn)定性。通過理論推導得到水平力-轉角曲線及抗側移剛度-轉角曲線，并提出簡化的滯回模型，采用案例詳細分析阻尼器各參數(shù)對受控搖擺橋墩的滯回性能及抗側移剛度的影響。結果表明：阻尼器的屈服強度對搖擺橋墩耗能能力有較大的影響，阻尼器其他參數(shù)不影響結構的耗能能力且對滯回性能影響較??；在受控搖擺橋墩轉動過程中，橋墩自身的抗側移剛度數(shù)值變化很小。

［關鍵詞］搖擺橋墩； 阻尼器； 抗側移剛度； 滯回性能

中圖分類號： TU352    文獻標識碼： A    文章編號： 1002-848X(2015)S2-0519-04

Study on the hysteretic mechanics and stability of rocking bridge piers

Li Bo， Zhang Xiaobo

(School of Architecture Engineering, Chang′an University, Xi′an 710000， China)

Abstact: Based on the rocking bridge piers as the research object, the hysteretic mechanics and stability were researched. Kinds of cases were taken into account to investigate the horizontal force-rotation curve and lateral stiffness-rotation curve. Then, simplified hysteresis model was put forward. The study results show that yield strength of the damper affect energy dissipation of rocking bridge piers and other components of the damper has little effect. The lateral stiffness-rotation changes little in the process of rotation.

Keywords: rocking-bridge pier; damper; lateral stiffness; hysteretic mechanics

作者簡介： 李波，博士，副教授，一級注冊結構工程師，Email：liboxuat@163.com。