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Finite element analysis on the seismic behavior of side joint of Prefabricated Cage System in prefabricated concrete frame

机译：预制混凝土框架中预制笼式系统侧缝抗震性能的有限元分析

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摘要

The Prefabricated Cage System (PCS) has the advantages of high bearing capacity and good ductility. Meanwhile, it is convenient for factory production and it is beneficial to the cost savings, construction period shortening. Side joint is the weak region of PCS concrete frame and has great influence on seismic behavior of the whole structure. Thus systematically study on the seismic behavior of PCS concrete side joint is necessary. This paper presents a finite element study on behavior of the side joint under seismic loading. In the finite element model, PCS concrete and the reinforced concrete (RC) is modeled by the solid element and fiber-beam element, respectively. The numerical results is compared with the experimental results and it is found that the results of model based on fiber-beam element is in better agreement with the experimental results than solid element model. In addition, the overall seismic behavior of the side joints in PCS concrete is better than that of the RC with the same strength.
机译：预制笼系统（PCS）具有高承载能力和良好延展性的优点。同时，方便工厂生产，有利于节约成本，缩短工期。侧缝是PCS混凝土框架的薄弱区域，对整个结构的抗震性能影响很大。因此，有必要对PCS混凝土侧节点的抗震性能进行系统研究。本文对侧向节点在地震荷载作用下的行为进行了有限元研究。在有限元模型中，PCS混凝土和钢筋混凝土（RC）分别由实体单元和纤维梁单元建模。将数值结果与实验结果进行了比较，发现基于纤维束单元的模型结果与实体单元模型具有更好的一致性。此外，在相同强度下，PCS混凝土中侧缝的整体抗震性能要优于RC。

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