Steel anchoring system GFRP

glassfor exterior fittings

Cuttable anchor for use in urban applications or adjacent to tunnels. The DYWIDAG GFRP Bar Anchor system comprises Glass Fibre Reinforced Polymer threadbars, typically arranged as a multi-bar system to form the anchor tendon. Because the anchors do not require de-stressing before cutting, they can be easily cut with simple digging equipment such as an excavator bucket or road header. This means they are often used in applications where subsequent works such as piling or tunneling are required within the anchoring zone once the anchors are redundant. GFRP is very efficient in tension but has poor compressive strength and shear characteristics. Therefore, coupling and nut terminations have significant lower capacities than the bar. GFRP anchor free lengths are typically single section, with the option of a steel coupler at the free length / bonded length intersection. Free length sections can be supplied as a single 22-meter section, as couplers within the free length are not recommended. For termination and stressing, long-length steel nuts are typically used. The GFRP Bar System is supplied with standard free length details (debond tubes) as used on conventional ground anchors, therefore stressing and lock-off operations are as per standard anchors. Stressing of GFRP multi-bar systems requires an open stool and multiple back nuts at the top of the jack. Product Features & Benefits Cuttable anchors for when piling or tunnelling works will take place nearby, saving time and labor Easily cut with simple digging equipment, such as an excavator bucket or road header, which avoids extra operations