1.Beijing Higher Institution Engineering Research Center of Civil Engineering Structure and Renewable Material,Beijing University of Civil Engineering and Architecture,Beijing 100044,China；
2.Administrative Bureau of the Central Committee of the Communist Party,Beijing 100017,China；
3.Franshion Properties(China) Limited,Beijing 100022,China；
4.The Research Center of Blast-resistant Structures and Disaster Reduction,61517 Troops of the P.L.A.，Beijing 100850,China
To evaluate the impact resistant performance of reinforced concrete (RC) beams strengthened with the High Strength Steel Wire Mesh and Polymer Mortar (HSSWM-PM),on the basis of experiments on three un-retrofitted RC beams and four retrofitted RC beams in drop-weight impact tests,a finite element model was established by using ANSYS/LS-DYNA code to simulate and predict the impact resistant behavior of RC beams specimens.Then the process parameters of reinforcement,such as the diameter of steel wire and mortar layer thickness of cement mortar were studied.The results show that the impact resistance performance of RC beams retrofitted with HSSWM-PM is greatly improved; The thickness of cement mortar and the diameter of steel wire have obvious advantages on the improvement of impact resistance performance,and increasing the thickness of mortar layer and diameter of steel wire appropriately is beneficial to alleviate cracks on beam and change the failure mode.It is essential to consider the effect of the thickness of mortar layer and the diameter of steel wire on the impact resistant behavior properly in practical engineering.
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