自密实微膨胀高强钢管混凝土的施工工艺  

Construction process of self-compacting minimum inflation high compressive strength concrete-filled steel tube

作　　者：陈囡[1,2] 马杰[3] 黄修林[3] 丁庆军[3] 

机构地区：[1]华南理工大学土木与交通学院,广东广州510641 [2]广州诚信公路建设监理咨询有限公司,广东广州510420 [3]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《混凝土》2009年第3期76-78,共3页Concrete

摘　　要：腊八斤特大桥、黑石沟特大桥为大跨连续刚构钢管混凝土组合高墩混凝土工程,其主墩最高墩高分别为182.5 m和157 m,在主桥墩钢管混凝土中,核心混凝土采用C80、C60高抛自密实微膨胀高强钢管混凝土。采用高位抛落免振捣法进行施工,着重介绍主墩钢管混凝土的施工工艺。Labajin and Heishigou bridge are the composite structure of long span continuous rigid frame with high-frusta concrete and con- crete-filled steel tube projects, the height of the major frusta of these two bridges are 182.5 m and 157 m, the still tubes of the major frusta of these two bridges are filled with stir-compacting minimum inflation high compressive strength cocrete, which are adopted high-toss and no vibrating ways to finish grouting the steel tube with those concrete.The construction process of the major frusta of these two bridges is introduced.

关 键 词：腊八斤特大桥 黑石沟特大桥 高墩 钢管混凝土 施工工艺 

分 类 号：TU528.053[建筑科学—建筑技术科学]