无梁现浇混凝土 GBF管空心楼盖质量控制 : the cast-in-situ concrete hollow floor (GBF tube) structure is a dark beam and not by the core pulling type hollow floor structure composed of system, the application of the ministry of construction as a new technology, in part of the building has been very good use. According to the hollow floor engineering work experience, talk about the project cast-in-situ hollow f