大型群组地脚螺栓三维可调式整体预埋技术研究

Study on 3-D Adjustable Integral Pre-buried Technique on Large Foundation Anchor Bolts Group

传统的螺栓预埋方式,其安装精度不能满足大型设备螺栓安装要求。介绍了一种新型的大型群组地脚螺栓三维可调式整体预埋技术。该技术在施工时通过制作定位板,准确固定群组螺栓相对位置,通过调整定位板上、下螺母,调整螺栓高度,在基槽周边布设钢筋拉锚,以调整群组螺栓的轴线位置,在浇筑混凝土时,随时监测调整,以达到螺栓精确预埋的目的。

The installation precision of traditional pre-buried bolts methods can not meet the bolts installation requirement of the large equipment.The author introduces a new kind of 3-D adjustable integral pre-buried technique on large foundation anchor bolts.The new technique is that during construction,relative position of bolts group can be accurately fixed by making position-plate;the bolt＇s height can be determined by adjusting the top and bottom nut of the position plate;the axial position of bolts group is determined by setting up pulling anchor bars in the surrounding of foundation;the bolts position is monitored and adjusted on time during pouring concrete.The new technique can meet the precision requirement of pre-buried bolts.