hollow drill steel bar是什么意思

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This article analyzes vertical transportation program in concrete construction of high and steep slope,by introducing power-bearing principle,functional parameter,design elements,construction technology essentials and innovation highlights of self-drilling hollow anchor poles.

介绍自钻式中空锚杆的受力原理、性能参数、设计要素、施工技术要点和创新亮点,对高陡边坡混凝土施工的垂直运输方案进行分析探讨。

Suspender presetting technology of PVC suspender casing and steel inserted bar are adopted.

结合工程实际情况,针对机电吊杆生根于预应力楼板的特点,采用PVC吊杆套管+钢筋插杆的吊杆预设施工方法。