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Seismic Performance and Fragility Analysis of Precast Concrete Sandwich Wall Structure
Journal of Earthquake Engineering ( IF 2.6 ) Pub Date : 2021-11-22 , DOI: 10.1080/13632469.2021.2003272
Gang Xu 1 , Tong Guo 1 , Aiqun Li 1, 2
Affiliation  

ABSTRACT

As an innovative concrete shear wall, sandwich wall (SW) is expected to be applied to improve the seismic performance of regular shear wall (RW). The test process of SW component and precast SW structure are described, numerical models are verified by the test results, and parameter analysis is also conducted by numerical simulation to expand the tests. The results show that a better match between the stiffness, ductility, load capacity, and energy dissipation can be achieved by reasonably designing SW; there is little difference between the hysteretic performances of SW structures with different vertical loading modes, but different horizontal loading modes have great impact, it is suggested to use horizontal load distributed based on the first vibration mode or the inverted triangular, which is closer to the real seismic action. Then, the seismic design procedure of SW structure is proposed, the analysis of a design example shows that the seismic responses meet the requirements of all limit states; while the application of precast SW structure can save the consumption of concrete materials, reduce the amount of grout-filled sleeves, and reduce the complexity of assembly and workloads significantly. In addition, fragility analysis is also conducted to evaluate the seismic performance and collapse resistance of precast SW structure, the results show that the seismic performance of precast RW structure is slightly better than that of precast SW structure, however, there is little difference in the seismic fragility between SW structure and RW structure.



中文翻译:

预制混凝土夹心墙结构的抗震性能及易损性分析

摘要

夹心墙(SW)作为一种创新的混凝土剪力墙,有望应用于提高普通剪力墙(RW)的抗震性能。描述了SW构件和预制SW结构的试验过程,通过试验结果验证了数值模型,并通过数值模拟进行了参数分析,扩大了试验范围。结果表明,通过合理设计SW可以实现刚度、延性、承载能力和耗能之间更好的匹配;不同竖向加载方式下SW结构的滞回性能差异不大,但不同水平加载方式影响较大,建议采用基于第一振型或倒三角分布的水平载荷分布,更接近于真正的地震作用。然后,提出了SW结构的抗震设计程序,设计实例分析表明其抗震响应满足所有极限状态的要求;而预制SW结构的应用可以节省混凝土材料的用量,减少灌浆套筒的用量,显着降低装配的复杂性和工作量。此外,还进行了脆性分析,对预制SW结构的抗震性能和抗倒塌性能进行了评价,结果表明,预制RW结构的抗震性能略优于预制SW结构,但两者相差无几。 SW结构和RW结构之间的地震易损性。设计实例分析表明,地震响应满足所有极限状态的要求;而预制SW结构的应用可以节省混凝土材料的用量,减少灌浆套筒的用量,显着降低装配的复杂性和工作量。此外,还进行了脆性分析,对预制SW结构的抗震性能和抗倒塌性能进行了评价,结果表明,预制RW结构的抗震性能略优于预制SW结构,但两者相差无几。 SW结构和RW结构之间的地震易损性。设计实例分析表明,地震响应满足所有极限状态的要求;而预制SW结构的应用可以节省混凝土材料的用量,减少灌浆套筒的用量,显着降低装配的复杂性和工作量。此外,还进行了脆性分析,对预制SW结构的抗震性能和抗倒塌性能进行了评价,结果表明,预制RW结构的抗震性能略优于预制SW结构,但两者相差无几。 SW结构和RW结构之间的地震易损性。并显着降低组装和工作量的复杂性。此外,还进行了脆性分析,对预制SW结构的抗震性能和抗倒塌性能进行了评价,结果表明,预制RW结构的抗震性能略优于预制SW结构,但两者相差无几。 SW结构和RW结构之间的地震易损性。并显着降低组装和工作量的复杂性。此外,还进行了脆性分析,对预制SW结构的抗震性能和抗倒塌性能进行了评价,结果表明,预制RW结构的抗震性能略优于预制SW结构,但两者相差无几。 SW结构和RW结构之间的地震易损性。

更新日期:2021-11-22
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