松花江大桥承台大体积混凝土施工技术  

Construction Techniques for Bulky Concrete

作　　者：曹立波[1] 王慧东[2] 

机构地区：[1]石家庄铁道学院研究生分院,河北石家庄050043 [2]石家庄铁道学院土木分院,河北石家庄050043

出　　处：《国防交通工程与技术》2007年第4期68-70,共3页Traffic Engineering and Technology for National Defence

摘　　要：在松花江大桥承台大体积混凝土的施工过程中,通过对绝热升温等所造成的和布置降温管后混凝土内部中心温度的计算,发现施工中易出现温度裂缝问题,为此从混凝土组成、配合比、降温管及施工后的养护等方面采取控制措施,实践证明效果良好,同时也降低了成本,获得较好的经济效益,值得在以后的施工中加以推广和借鉴。In the course of the construction of the bulky concrete cap of the Songhuajiang Bridge, adiabatic warming caused by the layout of the cooling tube and concrete is often found able to result in cracks in concrete after the calculation of internal temperature at the center of concrete, so a few crack-preventing measures, such as the control of concrete composition and mixture ratios, cooling pipes, construction conservation and so on, are taken to prevent cracks from occurring, which are found not only very effective in practice but also able to reduce costs, and help improve economic results, owing to which it is worth popularizing in future.

关 键 词：大体积混凝土 温度裂缝 降温管 配合比 

分 类 号：U443.25[建筑科学—桥梁与隧道工程]