2017年06月15日

Stong support-hollow bar

Heavy civil infrastructure projects can be some of the most difficult to coordinate and build. From site development and excavation to construction, coordinating utilities and site restoration there are many challenges faced on these complex projects.The reinforcement of expansive soil cutting slope has been a difficulty for the construction industry. And Sinorock carries a wide range of self drilling rock anchors to fit a variety of construction projects. You can choose among various lengths, load ratings and materials to find the perfect self drilling hollow anchor bars to safely complete your project.
Providing a ultimate load range from 261kN to 7909kN. All Sinorock self drilling rock bolt utilise a small diameter greased filled high density polyethylene sheathing, allowing for a greater number of individual strands to be contained in a given drill hole size.
Sinorock self drilling hollow anchor bars are used for rock reinforcement in Mining and Tunneling. Self drilling rock bolts limit the loosening of blocks out of the rock mass and shear displacements. Furthermore, the frictional force between individual rock layers is increased. Self drilling rock bolts with a variable anchor length enable pre-tensioning and thus an active force transmission.
There are also a great many other benefits of hollow anchor bar,include corrosion-prevention,long longevity,low density,environmental friendly,convenient,light,high tensile stress,easy cut,easy recycling,non-conducting and so on.
When you use hollow anchor bar of Sinorock, a large amounts of problems have been soloved in the manufacturing process and it is well apllicable to the poor ground conditions,such as loose soil,weak rocks,unsolidable layers and so on.
Sinorock's hollow anchor bar system is designed and fabricated to the international standards as set forth in the Post-Tensioning Institute’s Recommendations for Pre-stressed Rock and Soil Anchors. Bearing capacity is a function of the steel capacity as well as the geotechnical holding capacity.
Capacity of steel should be confined to 90% maximum test loading capacity and 60% lock-off load for permanent operation. Geotechnical capacity is a function of ground bond stress characteristics which can be moderated by necessary anchoring procedures.


Posted by seo2@sinorockco.com at 18:56│Comments(0)TrackBack(0)

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