斜拉桥钻石形主塔下横梁与塔柱异步施工技术  

Asynchronous Construction Technology of Lower Beam and Tower Column of Cable-Stayed Bridge with Diamond-Type Main Tower

作　　者：余定军 王吉英[2] 刘勇 袁锡权 

机构地区：[1]中交二航局第二工程有限公司,重庆市400013 [2]辽宁省交通勘测设计院,沈阳市110005

出　　处：《公路》2010年第11期7-11,共5页Highway

摘　　要：辽河特大桥为主跨436 m的双塔双索面斜拉桥,主塔高度为150.2 m。主塔采用钻石形混凝土塔,并设置一道下横梁,下横梁与塔柱采用异步施工技术。虽然异步施工技术在A形或H形主塔施工中有过应用,但在钻石形主塔中,国内外还没有先例。结合工程实例,重点介绍斜拉桥钻石形主塔下横梁与塔柱异步施工技术。结果表明,该技术切实可行,并节约了工期。Liaohe Ultra-long Bridge is designed as a cable-stayed bridge with a main span 436m,double pylons and double cable planes,and the main tower is 150.2 meter high.The main tower is designed as diamond-type concrete tower with a lower beam and asynchronous construction technology is adopted in the lower beam and tower column construction.Although the asynchronous construction technology has ever used in A-type or H-type main tower construction,the technology has never used in diamond-type main tower construction at home and abroad.Connecting with the construction case,the asynchronous construction technology of the lower beam and tower column of cable-stayed bridge with diamond-type main tower is emphatically introduced.The results show that the technology is feasible and save construction period.

关 键 词：辽河特大桥 钻石形主塔 下横梁 异步施工 

分 类 号：U445.559[建筑科学—桥梁与隧道工程]