大型渡槽减隔震设计研究

渡槽结构由于上部水体及槽体重量大,地震时动力反应强烈.按传统抗震设计难以保障其安全性,采用减隔震装置是解决渡槽抗震安全的可行措施,适度延长隔震结构周期与调整阻尼是控制渡槽振动的有效途径.由于无渡槽减隔震设计规范,借鉴桥梁减隔震设计原理,结合某渡槽进行了减隔震参数设计,给出了设计步骤.

Seismic Isolation Design of Large-Scale Aqueduct-Bridge

Since the weight of the aqueduct-bridge together with its inside water is huge, the dynamic response of the structure is intensive under seism,its safety could not be guaranteed according to the traditional aseismatic design. Therefore the seismic isolator is a feasible measure to ensure the safety of the aqueduct-bridge. Prolonging the period and adjusting the damp of the aqueduct-bridge are effective ways to control its vibration. As no design criterion about the aqueduct-bridge can be followed currently,the isolation principle of the bridge is used for reference and applied to the parameter design of an aqueduct-bridge,and the design process is given at the same time.