采用地基加固用高强钢管的SP-锚杆和SP-土钉  

SP-Rockbolt and SP-Soil Nail with High Strength Steel Pipe for Foundation Reinforcement

作　　者：罗晔 LUO Ye(R&D Center of Wuhan Iron&Steel Co.,LTD.,Baosteel Central Research Institute,Wuhan 430080,Hubei,China)

机构地区：[1]宝钢中央研究院武钢有限技术中心,湖北武汉430080

出　　处：《四川冶金》2023年第3期44-48,共5页Sichuan Metallurgy

摘　　要：锚杆是隧道的关键支护构件。POSCO集团与韩国材料公司共同开发了SP-锚杆和SP-土钉等钢建材产品,这两类产品均采用了屈服强度800 MPa的钢管,其重量相当于普通锚杆的50%,强度则提高了2倍以上,不仅利于施工,在安装后还可以最大程度地提高安全性,大大降低了安全事故的风险。另外,通过中空钢管向内部灌注砂浆,加固效果更为理想。The rockbolt is the key supporting component of the tunnel.POSCO Group and Korea Materials Company have jointly developed steel building materials products such as SP-rockbolt and SP-nail.these two kinds of products use steel pipes with a yield strength of 800 MPa,whose weight is equivalent to 50%of that of ordinary anchors,and the strength has been increased by more than 2 times,which is not only conducive to construction,but also can maximize safety after installation,greatly reducing the risk of safety accidents.In addition,the reinforcement effect is more ideal by pouring mortar into the hollow steel pipe.

关 键 词：变形钢筋 SP-锚杆 SP-土钉 灌浆填料 拉拔试验 

分 类 号：TU352[建筑科学—结构工程]