超高索塔泵送混凝土技术  

Pumping Concrete Technology of Ultra High Cable Tower

作　　者：吴明威 刘冬冬 李耀宗 周雷 

机构地区：[1]中交二航局第五工程分公司,湖北武汉430012

出　　处：《施工技术》2017年第8期113-116,共4页Construction Technology

摘　　要：赤石大桥主桥为4塔双索面预应力混凝土斜拉桥,主塔为双面双曲线收腰结构,其中7号主塔为4塔中最高索塔。主塔混凝土施工采用泵送混凝土工艺,泵送高度已达到现代超高泵送混凝土技术的要求,具有浇筑总量大,单次浇筑量大的特点,且受塔身结构限制,泵送混凝土泵管更换较为困难,对混凝土泵送技术提出了较高要求。本文结合工程实例总结高程泵送的方法。Chishi bridge is a cable-stayed bridge with four towers and double cable plane prestressed concrete,the main tower is the double hyperbolic waist structure,the No. 7 main tower is the highest.Concrete construction of main tower by pumping concrete technology,the pumping has reached the height of modern super high pumping concrete technology requirements,with a large amount of single pouring,pouring a large amount of features,and because of the tower structure limit,the concrete pumping replacement is difficult,concrete pumping technology puts forward higher requirements combined with the engineering example,the method of vertical pumping is summarized.

关 键 词：混凝土 索塔 泵送 试验 施工技术 

分 类 号：TU755.5[建筑科学—建筑技术科学]