无粘结后张法梁柱连接的纤维铰模型

Hu Qi, Yelei Shen, Haishan Guo, Wenxuan Zhang, Zheng Lu
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引用次数: 0

摘要

采用无粘结后张法梁柱连接(UPBC)的预制混凝土框架近年来受到重视,因为这种框架能够承受设计基准地震,且损坏程度较轻。本文提出的纤维铰模型(FHM)是一种简单有效的方法,用于模拟 UPBC。在 FHM 中,穿过界面的低碳钢和预应力筋被整合为一个元素。本文介绍了 FHM 的机理和行为。本文提出的模型是在 OpenSees 中开发的,已经过测试验证,FHM 能够准确描述预制梁和柱之间的界面打开所引起的受压中心偏移,以及 "梁伸长效应"。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The fiber hinge model for unbonded post‐tensioned beam‐column connections
The precast concrete frame with unbonded post‐tensioned beam‐column connections (UPBC) has been emphasized in recent years for it is capable of sustaining a design‐basis earthquake with minor damage. The fiber hinge model (FHM), which is a simple and effective approach, is proposed in this paper for the simulation of UPBC. In the FHM, the mild steels and prestressed tendons crossing the interface are integrated into one element. The mechanism and behavior of the FHM are presented in this paper. The proposed model, which is developed in OpenSees, has been validated by tests, and the FHM is able to accurately describe the shift of compressive center induced by the opening of the interface between the precast beam and column, as well as “beam elongation effects.”
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