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首页> 外文期刊>Journal of Earthquake Engineering >CONCEPT AND DEVELOPMENT OF HYBRID SOLUTIONS FOR SEISMIC RESISTANT BRIDGE SYSTEMS
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CONCEPT AND DEVELOPMENT OF HYBRID SOLUTIONS FOR SEISMIC RESISTANT BRIDGE SYSTEMS

机译：抗震桥梁系统混合动力解决方案的概念与发展

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摘要

The development of alternative solutions for precast concrete buildings based on jointed ductile connections has introduced innovative concepts in the design of lateral-load resisting frame and wall systems. Particularly efficient is the hybrid system, where precast elements are connected via post-tensioning techniques and self-centring and energy dissipating properties are adequately combined to achieve the target maximum displacement with negligible residual displacements. In this contribution, the concept of hybrid system is extended to bridges as a viable and efficient solution for an improved seismic performance when compared with monolithic counterparts. Critical discussion on the cyclic behaviour of hybrid systems, highlighting the most significant parameters governing the response, is carried out. The concept of a flexible seismic design (displacement-based) of hybrid bridge piers and systems is proposed and its reliability confirmed by quasi-static cyclic (push-pull) and nonlinear time-history analyses based on lumped plasticity numerical models.
机译：基于关节延性连接的预制混凝土建筑物替代解决方案的开发在抗侧向荷载框架和墙体系统的设计中引入了创新概念。混合动力系统特别有效，在该系统中，预制件通过后张紧技术进行连接，并且自动定心和耗能特性得到充分组合，以达到目标最大位移而残余位移可忽略不计。在这一贡献中，与整体式系统相比，混合系统的概念被扩展到桥梁，作为可行和有效的解决方案，以提高抗震性能。对混合系统的循环行为进行了批判性讨论，突出了控制响应的最重要参数。提出了混合桥墩和系统的柔性抗震设计（基于位移）的概念，并通过基于集总塑性模型的准静态循环（推拉）和非线性时程分析来确认其可靠性。

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