Moment and energy dissipation capacities of post-tensioned precast concrete connections employing a friction device
Moment and energy dissipation capacities of post-tensioned precast concrete connections employing a friction device
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DOI：
10.1016/j.engstruct.2017.02.012
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发表时间：
2017-05
影响因子：
5.5
通讯作者：
T. Koshikawa
中科院分区：
文献类型：
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作者：
T. Koshikawa
本文介绍了一个分析研究设计的无粘结后张（PT）预制混凝土梁柱连接，采用摩擦装置。以规范化的形式开发了与PT连接的弯矩承载力、滞回耗能能力和自定心能力相关的设计公式。分析了摩擦力、后张预应力初始值、摩擦装置位置等规范化参数对结构弯矩和耗能能力的影响，验证了设计公式的正确性。还利用设计公式开发了一种设计程序，以实现PT连接所需的设计力矩和耗能能力。线性极限弯矩和滞回耗能比的等值线图，用于确定所需的归一化参数值。调查是基于非线性截面分析方法的分析响应的PT连接与各种规范化参数的集合。计算结果验证了设计公式和设计方法的正确性。
This paper describes an analytical investigation into the design of unbonded post-tensioned (PT) precast concrete beam-column connections that employ a friction device. Design formulas related to the moment capacities, hysteretic energy dissipation capacities, and self-centering capabilities of the PT connections are developed in normalized form. The validation of the design formulas and the effect of normalized parameters such as friction force, initial post-tensioning force and the location of the friction device on the moment and energy dissipation capacities are investigated. A design procedure to achieve desired design moment and energy dissipation capacities for the PT connections is also developed using the design formulas. Contour plots for the linear limit moment and hysteretic energy dissipation ratio are provided for determining the required values of the normalized parameters. The investigation is based on the analytical responses from a nonlinear section analysis method for a number of PT connections with various sets of normalized parameters. The results confirm the adequacy of the design formulas and design procedure.