現代橋梁結構設計中減隔震技術的應用分析

劉亞洲

摘 ?要：現代橋梁極為注重結構設計，尤其是結構抗震設計，強調在進行橋梁設計與建設過程中，需要運用有效手段，降低地震對于橋梁的破壞，以對民眾生命財產形成有效保護，減隔震設計就是其中一種較為有效的橋梁抗震性能強化手段。在進行橋梁周期延長時，因為隨之增加的橋梁位移反應會直接增加橋梁結構設計難度，所以需要將減隔震設備放入塑性區域，以通過對設備自身能量進行消耗的方式，降低橋梁塑性能耗以及結構能耗，進而降低地震運動對于橋梁結構的影響，強化橋梁抵御性能，確保減隔震技術所具有的各項優勢可以在橋梁結構設計中得到完全性發揮。通過對減隔震技術的應用，可實現破壞橋梁結構地面運動與橋梁結構的有效隔離，延長橋梁使用壽命，其應用價值不言而喻。通過對減隔震技術相關內容的介紹，對減隔震技術在橋梁結構設計中的應用步驟展開分析，進而對該項技術在現代橋梁結構設計中的應用展開全面論述，旨在提升減隔震技術應用水平，促進現代橋梁結構設計發展。

關鍵詞：技術原理;減隔震技術;技術適用條件;橋梁結構設計

中圖分類號：U442.5 文獻標志碼：A 文章編號：2095-2945（2019）22-0167-02

Abstract： Modern bridges attach great importance to structural design， especially structural seismic design， and emphasize that in the process of bridge design and construction， it is necessary to use effective means to reduce the damage caused by earthquake to the bridge， in order to protect the lives and property of the people effectively. Seismic isolation design is one of the more effective means to strengthen the seismic performance of bridges. When the bridge period is prolonged， because the increasing displacement response of the bridge will directly increase the difficulty of the bridge structure design， it is necessary to put the seismic isolation equipment into the plastic area， in order to consume the energy of the equipment itself， reduce the plastic energy consumption and structural energy consumption of the bridge， and thereby reduce the influence of seismic motion on the bridge structure and strengthen the resistance performance of the bridge， so as to ensure that the advantages of seismic isolation technology can be fully brought into full play in the design of bridge structure. Through the application of seismic isolation technology， the ground motion of damaged bridge structure can be effectively isolated from the bridge structure， the service life of bridge can be prolonged， and its application value is self-evident. Through the introduction of the related contents of the seismic reduction and isolation technology， this paper analyzes the application steps of the seismic reduction and isolation technology in the bridge structure design， and then comprehensively discusses the application of this technology in the modern bridge structure design， in order to improve the application level of the seismic reduction and isolation technology and promote the development of modern bridge structure design.

Keywords： technical principle; seismic reduction and isolation technology; technical application condition; bridge structure design