双曲面球型减隔震支座在临河黄河特大桥上的应用  

Application of Double Spherical Anti-seismic Bearing in Linhe Yellow River Bridge

作　　者：原学明[1] 凡明杰[1] 陶泉霖[1] 刘红杰[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《华北水利水电大学学报（自然科学版）》2015年第2期30-34,共5页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

摘　　要：超长联大跨连续梁桥体型庞大、头重脚轻,在地震工况下,下部结构的强度要求和变形较大.传统的结构抗震设计方法是增大桥墩和基础的截面尺寸以及配筋量,不仅会增加下部结构造价,还会给施工带来一定的困难.结合临河黄河特大桥的抗震设计,研究双曲面球型摩擦摆隔震支座在桥梁抗震设计中的应用,并采用有限元计算程序SAP2000对该桥进行了抗震效果模拟.结果表明,采用双曲面球型减隔震支座与常规方案相比,可显著降低墩底内力,有效地解决了下部结构截面设计难以满足受力的技术难题,经济技术优势显著.A continuous girder bridge with super-long unit and large span is large-size and top-heavy,under the condition of earthquake,the strength requirement and deformation of substructure are bigger.The traditional measures of structure anti-seismic design are to increase the quantity of reinforcements as well as the size of piers and foundation sections,which will increase the cost of substructure and bring some difficulties to the construction.Combining with the anti-seismic design of Linhe Yellow River Bridge,the application of double spherical anti-seismic bearing to the anti-seismic design of bridges was researched,and the anti-seismic effect was simulated with the finite element program SAP2000.The results show that comparing with the traditional scheme,the scheme of double spherical anti-seismic bearing can obviously decrease the internal force of piers＇ bottom,and can effectively resolve the technical problem that the sectional design is difficult to meet the requirement of force.

关 键 词：超长联大跨连续梁桥 抗震设计 双曲面球型摩擦摆隔震支座 抗震效果 

分 类 号：U442.55[建筑科学—桥梁与隧道工程]