An investigation of Concrete Dalle in Chain Conditions and Their Hardening by FRP Fibers

One of the issues that is now of high interest to civil engineers is the hardening of structures against unusual loads(including blast loads, fire-caused loads, impact loads). One of the features which has attracted attention in the field of structure hardening is the application of the capacity derived from chain performance to harden structures against failure caused by unusual loads. In this regard, since the armed concrete dalle is considered one of the main members of concrete structures, their behavior in the chain conditions and their ability during the chain performance greatly affect the lives of personnel and the general sustainability of concrete. In regard to this important point, their hardening is of utmost importance. Therefore in this research, firstly an armed concrete dalle similar to the test samples, has been modeled and analyzed using the ABAQUS software and then ensuring the ability of this software to model and analyze the relevant sample, all kinds of hardening and improving the behavior of concrete dalle using FRP in the chain conditions, has been reviewed. In this research, various status has been studied taking different models of fiber formation and various thickness into consideration. The results showed that the loading capacity of dalle and its formability increased by 50% and 30% respectively and the FRP- reinforced dalles have suitable performance in the chain conditions and can prevent failures caused by unusual loads.