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工程力学  2015 

高强钢筋混凝土桥墩抗震性能试验研究与分析

DOI: 10.6052/j.issn.1000-4750.2014.03.0221, PP. 99-105

Keywords: 桥墩,高强钢筋,抗震性能,影响因素,拟静力

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Abstract:

通过拟静力试验研究配置高强钢筋混凝土桥墩的抗震性能。分析桥墩试件的破坏形态,对往复荷载作用下桥墩试件的滞回特性、承载能力、延性性能、耗能能力等抗震性能指标进行比较研究。分析轴压比、剪跨比、箍筋间距及钢筋强度等对抗震性能的影响规律。研究表明:配置高强钢筋混凝土桥墩试件的破坏形态与配置普通钢筋的混凝土桥墩的一致,剪跨比较小的桥墩变形能力有限,呈弯剪破坏形态;剪跨比较大的桥墩变形能力较大,呈弯曲破坏形态。提高轴压比虽能提高试件的承载能力,但使其抗震性能指标降低,不利于桥墩抗震。提高钢筋强度和加密箍筋能提高其各方面的抗震性能指标,有利于结构抗震。

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