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首页> 外文期刊>Advances in Structural Engineering >Seismic behaviors of precast assembled bridge columns connected with prestressed threaded steel bar: Experimental test and hysteretic model
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Seismic behaviors of precast assembled bridge columns connected with prestressed threaded steel bar: Experimental test and hysteretic model

机译：预应力螺纹钢棒连接预制组装桥柱的地震行为：实验测试和滞后模型

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摘要

Three 1/10-scale bridge pier specimens were tested under quasi-static test. The specimens included two precast specimens (PC1 and PC2) and one cast-in-place reference specimen. The two precast bridge pier specimens were connected with prestressing threaded steel bar and steel flange at the connection between precast pier column and the foundation, and non-socket assembly scheme and socket assembly scheme are adopted, respectively. They were tested to verify the seismic performance of prefabricated piers connected by prestressed threaded steel bars and steel flanges and study which assembly scheme is better for non-socketed and socketed piers. The results show that the prefabricated pier with the combination of the prestressed threaded steel bars and steel flange has higher cracking load and smaller residual displacement, which indicates that it has good service performance and good self-resetting ability. Compared with the non-socket assembly scheme, the socket assembly scheme is superior due to its higher ductility, higher overall initial stiffness, and higher energy dissipation capacity. Therefore, the prefabricated assembled pier with the socket connection scheme of the combination of the prestressed threaded steel bars and steel flange has good service performance and seismic performance. After that, a hysteretic model for the precast assembled columns was proposed, which has a good agreement with the test results.
机译：在准静态测试下测试了三个1/10级桥墩标本。标本包括两个预制标本（PC1和PC2）和一个配送的参考标本。两个预制桥墩标本与预应力螺纹钢棒和钢法兰连接在预制墩柱和基础之间，采用非插座组装方案和插座组装方案。他们被测试以验证预应力螺纹钢筋和钢法兰连接的预制码头的地震性能，以及哪些装配方案对非侧插座和插座墩的研究。结果表明，采用预应力螺纹钢筋和钢法兰组合的预制码头具有更高的裂缝负荷和较小的残余位移，表明它具有良好的服务性能和良好的自动重置能力。与非插座组装方案相比，插座组装方案由于其较高的延展性，更高的总初始刚度和更高的能量耗散能力而优越。因此，采用预应力螺纹钢筋和钢法兰组合的具有插座连接方案的预制组装码头具有良好的服务性能和地震性能。之后，提出了一种预制组装柱的滞后模型，其与测试结果具有良好的一致性。

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