独塔混合梁斜拉桥设计研究  

Design and Research of Single Tower Hybrid Beam Cable-Stayed Bridge

作　　者：李辉 夏飞龙 LI Hui;XIA Fei-long(Anhui Transport Consulting&Design Institute Co.,Ltd.,Hefei,Anhui 230088,China;Road Traffic Energy Saving and Environmental Protection Technology Transportation Industry R&D Center,Hefei,Anhui 230088,China)

机构地区：[1]安徽省交通规划设计研究总院股份有限公司,安徽合肥230088 [2]公路交通节能环保技术交通运输行业研发中心,安徽合肥230088

出　　处：《黑龙江交通科技》2023年第3期76-79,共4页Communications Science and Technology Heilongjiang

摘　　要：近年来,混合梁斜拉桥因其可以充分发挥混凝土与钢材的优点,在国内发展迅速。以S16合肥至周口高速公路寿县刘岗至保义段东淝河大桥(95+175)m混合梁门式塔独塔斜拉桥为研究对象,针对该桥上跨引江济淮二级航道特点,对东淝河大桥的跨径布置,上下部结构构造尺寸确定,并给出主要的计算结果对比,研究结果表明:加大混凝土梁侧索力提高了跨中、主塔附近主梁的安全储备分别为17.31%、28.43%;降低了跨中主梁正截面压应力2.18%,提高了主塔附近主梁的正截面压应力2.67%。In recent years,hybrid girder cable-stayed bridge has developed rapidly in China because it can give full play to the advantages of concrete and steel.In this paper,the Dongfeihe bridge(95+175)m mixed girder portal tower single tower cable-stayed Bridge in Shouxian Liugang Baoyi section of S16 Hefei Zhoukou Expressway is taken as the research object.According to the characteristics of the bridge crossing the secondary channel of the Yangtze Huaihe River,the span layout of the Dongfeihe Bridge,the structural dimensions of the upper and lower structures are determined,and the main calculation results are given.The research results show that increasing the side cable force of the concrete beam improves the mid span the safety reserves of main beams near the main tower are 17.31%and 28.43%respectively;The normal section compressive stress of the main beam in the middle span is reduced by 2.18%,and the normal section compressive stress of the main beam near the main tower is increased by 2.67%.

关 键 词：混合梁 独塔 斜拉桥 

分 类 号：U442[建筑科学—桥梁与隧道工程]