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通过对72个圆心角为120°的双跨偏心支承弯箱梁桥模型的计算分析,以梁格系法为基础编制的3D-BSA软件系统为结构计算工具,用统计分析的方法建立双跨偏心支承弯箱梁桥结构反应在使用极限状态及承载能力极限状态下与桥梁跨长、支承偏心距等参数间的经验公式,为双跨偏心弯箱梁桥的实用设计提出适当建议或借鉴依据。
Through the calculation and analysis of 72 double-span eccentrically supported curved box-girder bridges with a central angle of 120 °, the 3D-BSA software system based on the beam grid method is a structural calculation tool, and a double-span The experiential formula between eccentric bearing curved box-girder bridge structural response under the limit state and ultimate bearing capacity, span length of bridge, eccentricity of support and so on, so as to put forward appropriate suggestions or references for the practical design of double-span eccentric curved box girder bridge .