Analytical Modeling and Design Validation of Posttensioned Precast Concrete Coupling Beams for Seismic Regions
Analytical Modeling and Design Validation of Posttensioned Precast Concrete Coupling Beams for Seismic Regions
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DOI：
10.1061/(asce)st.1943-541x.0000415
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发表时间：
2012-02
期刊：
影响因子：
--
通讯作者：
B. Weldon;Y. Kurama
中科院分区：
文献类型：
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作者：
B. Weldon;Y. Kurama
本文对无粘结后张法预制混凝土连梁的分析建模和设计进行了试验验证。将一系列楼层连梁组合试件的试验结果与纤维单元分析模型的预测结果进行了比较。试验结果还被用来验证理想化的连梁端部弯矩与弦杆转动关系，该关系是作为遵循平衡、协调和本构关系基本原则的设计工具开发的。在试验和分析比较的基础上，提出了无粘结后张法预制连梁满足抗侧强度、刚度、延性和耗能能力的抗震设计方法。
This paper provides an experimental validation on the analytical modeling and design of unbonded posttensioned precast concrete coupling beams. Previous test results from a series of floor-level coupling beam subassembly specimens are compared with the predicted results from a fiber-element analytical model. The test results are also used to validate an idealized coupling beam end moment versus chord rotation relationship that was developed as a design tool following basic principles of equilibrium, compatibility, and constitutive relationships. Based on the experimental and analytical comparisons, the paper presents a seismic design approach to achieve the desired lateral strength, stiffness, ductility, and energy dissipation capacity in unbonded posttensioned precast coupling beams.