現(xiàn)代橋梁結(jié)構(gòu)設(shè)計中減隔震技術(shù)的應(yīng)用分析

劉亞洲

摘 ?要：現(xiàn)代橋梁極為注重結(jié)構(gòu)設(shè)計，尤其是結(jié)構(gòu)抗震設(shè)計，強調(diào)在進(jìn)行橋梁設(shè)計與建設(shè)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(chǎn)形成有效保護(hù)，減隔震設(shè)計就是其中一種較為有效的橋梁抗震性能強化手段。在進(jìn)行橋梁周期延長時，因為隨之增加的橋梁位移反應(yīng)會直接增加橋梁結(jié)構(gòu)設(shè)計難度，所以需要將減隔震設(shè)備放入塑性區(qū)域，以通過對設(shè)備自身能量進(jìn)行消耗的方式，降低橋梁塑性能耗以及結(jié)構(gòu)能耗，進(jìn)而降低地震運動對于橋梁結(jié)構(gòu)的影響，強化橋梁抵御性能，確保減隔震技術(shù)所具有的各項優(yōu)勢可以在橋梁結(jié)構(gòu)設(shè)計中得到完全性發(fā)揮。通過對減隔震技術(shù)的應(yīng)用，可實現(xiàn)破壞橋梁結(jié)構(gòu)地面運動與橋梁結(jié)構(gòu)的有效隔離，延長橋梁使用壽命，其應(yīng)用價值不言而喻。通過對減隔震技術(shù)相關(guān)內(nèi)容的介紹，對減隔震技術(shù)在橋梁結(jié)構(gòu)設(shè)計中的應(yīng)用步驟展開分析，進(jìn)而對該項技術(shù)在現(xiàn)代橋梁結(jié)構(gòu)設(shè)計中的應(yīng)用展開全面論述，旨在提升減隔震技術(shù)應(yīng)用水平，促進(jìn)現(xiàn)代橋梁結(jié)構(gòu)設(shè)計發(fā)展。

關(guān)鍵詞：技術(shù)原理;減隔震技術(shù);技術(shù)適用條件;橋梁結(jié)構(gòu)設(shè)計

中圖分類號：U442.5 文獻(xiàn)標(biāo)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