现代桥梁结构设计中减隔震技术的应用分析

刘亚洲

摘  要：现代桥梁极为注重结构设计，尤其是结构抗震设计，强调在进行桥梁设计与建设过程中，需要运用有效手段，降低地震对于桥梁的破坏，以对民众生命财产形成有效保护，减隔震设计就是其中一种较为有效的桥梁抗震性能强化手段。在进行桥梁周期延长时，因为随之增加的桥梁位移反应会直接增加桥梁结构设计难度，所以需要将减隔震设备放入塑性区域，以通过对设备自身能量进行消耗的方式，降低桥梁塑性能耗以及结构能耗，进而降低地震运动对于桥梁结构的影响，强化桥梁抵御性能，确保减隔震技术所具有的各项优势可以在桥梁结构设计中得到完全性发挥。通过对减隔震技术的应用，可实现破坏桥梁结构地面运动与桥梁结构的有效隔离，延长桥梁使用寿命，其应用价值不言而喻。通过对减隔震技术相关内容的介绍，对减隔震技術在桥梁结构设计中的应用步骤展开分析，进而对该项技术在现代桥梁结构设计中的应用展开全面论述，旨在提升减隔震技术应用水平，促进现代桥梁结构设计发展。

关键词：技术原理;减隔震技术;技术适用条件;桥梁结构设计

中图分类号：U442.5 文献标志码：A 文章编号：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