田赋都
    （中钢集团天澄环保科技股份有限公司，武汉430205）

[摘要] 分析了钢管混凝土柱柱芯混凝土施工的特点和难点，采取改进混凝土配合比、设置混凝土止回阀、泄压孔等措施，解决了泵送顶升混凝土浇筑的难题，满足混凝土施工质量要求。
[关键词] 钢管混凝土柱；混凝土配合比；泵送顶升；止回阀；泄压孔
中图分类号：TU528.59    文献标识码：A  文章编号：1002-848X(2011) S2-0496-04

    Concrete pumping technology of concrete filled steel tube column core
    Tian Fudu
    ( Sinosteel Tiancheng Environmental Protection Science & Technology Co., Ltd., Wuhan 430205, China)

Abstract: The characteristics and difficulties in concrete construction of concrete filled steel tube column core were analyzed. Methods such as optimizing concrete mix proportion and supplying concrete check valve and pressure discharge hole can solve the problem of concrete pumping in concrete placement so as to meet the requirements of concrete construction quality.
Keywords: concrete filled steel tube column; micro-expanding concrete; concrete pumping; check valve; pressure discharge hole