简述桥梁改建方案摘要:主要阐述了公路桥梁改建加宽,按上部构造和下部构造连接处理的三种方案,三种方案的优缺点和适用的基础形式,对基底的要求等。关键词:桥梁;改建;加宽;连接处理Abstract:Mainlyelaboratedthehighwayreconstructionofbridgewidening,threeschemesaccordingtotheupperandlowertectonicstructureconnectionprocessing,threeschemesandthebasicformofapplication,onthebasisoftherequirements...