Neuentwicklung eines Ladungsrückhaltesystems aus textilbewehrten Betonfertigteilen - Bemessungsvorschlag zu dem als Koppelelement wirkenden Textilbetondübel mit Kreisquerschnitt

New development of a load restraint system of textile reinforced precast concrete units: design proposal to the textile reinforced concrete anchor with circular cross-section that is acting as a coupling element

The two load restraint systems that are globally known so far are produced in steel construction. For those steel systems the impact energy of the load object will be consumed exclusively by deformation energy of the restraint system. This already leads at a comparatively low load impact to considerable repair or replace works of the deformed safety barrier with the connected reductions of the road traffic and the maintenance costs resulting from it.
Up to now there is no safety barrier known in solid construction whose function consists exclusively in holding back the transported load of a vehicle running off the road, if necessary. Therefore a load restraint system of textile reinforced precast concrete units has been developed, where the kinetic energy of the load object is converted in reversible construction deformations under the use of concrete mass inertia and, from a possible higher energy level of the load object, in irreversible deformations of a special deformation layer.
The contribution discusses the construction and the function of the developed load restraint system. Furthermore a design proposal is presented to the textile reinforced concrete anchor with circular cross-section that is acting as a coupling element and whose shear force capacity was derived from static and dynamic tests.