【摘要】 探讨了震害遗址保护性加固的设计原则。考虑到震害遗址的功能应能反映震害状况,并可以供科考参观,建议加固原则为要尽量避免影响震害现象,保持遗址结构的稳定承重和在常遇地震下不倒塌。保护性加固工程的安全冗余度可略低于常规结构。加固设计应合理估算原结构构件的震损程度,并以此作为加固设计的依据。接着,介绍了四川白鹿镇中法友谊桥遗址的保护性加固设计:通过震害调查确定结构的基本尺寸,采用ABAQUS有限元实体建模进行了遗址结构的受力分析,结合遗址结构特点制定了加固方案。分析表明,加固方案显著加强了拱桥遗址的抗震承载能力,能够满足震害遗址的保护性加固要求。更多还原

【Abstract】 This paper discusses the principle of the protective retrofit of the earthquake damaged structure ruins.Considering that the function of the earthquake damaged structure ruins is retaining earthquake damage situation for scientific investigation and tourist visit,recommended protective retrofit principle should be able to reflect the damage phenomenon,keep the site structure stable and prevent the site from collapsing during frequent earthquake.Thus the design reliability of the protective retrofit can be slightly lower than that of new structure.Damage level of the structural elements of the site should be estimated and be taken into account during the design of the protective retrofit components.Then the protection retrofit design of an earthquake damaged stone arch bridge in Bailu Town,Sichuan Province,was presented as a case study:structure size was estimated by seismic damage investigation,FEA was carried out by ABAQUS,retrofit plan was drawn up in combination with the bridge site character.FEA shows that the retrofit construction can strengthen the earthquake resistant capability of the site structure significantly and meet the protective retrofit requirement.更多还原