钢筋混凝土柱抗震性能试验研究英文文献和中文翻译(2)

Textile-reinforced concrete, as a combination of a textile and fine-grain concrete, has the capacities of crack resistance, seepage resistance, and corrosion resistance (Bösche et al。 2008; Yin et al。 2014)。 The mechanical characteristics of the composite were tested and studied in previous research (Yin et al。 2013, 2016)。 It uses mortar as a cementitious material, which can improve the bonding property with the substrate, overcome the defects of the organic gel matrix, and fill the defects of the repaired structure’s surface (Yin et al。 2015)。 TRC reinforcement does not require an additional con- crete protection layer but only a 10–20 mm anchoring thickness of reinforcing fiber, and the size and the weight of the original struc- tures are barely changed。 Therefore, TRC is widely used in the reinforcement of reinforced concrete structures (Yin et al。 2014)。

Many scholars have recently conducted preliminary studies on the seismic performance of reinforced concrete structures strength- ened by TRC。 Bournas et al。 (2007, 2009) studied the seismic behavior of reinforced concrete columns strengthened with TRM and analyzed the influence that the lap length of different longitu- dinal bars has on the seismic performance。 Their studies showed that the TRM could delay the yielding of the longitudinal bars of the column plastic hinge and enhance the overall energy- dissipation capacity of the columns。 Compared with the equivalent strength and stiffness of the TRM, the seismic performance of the

concrete columns strengthened by TRM was better than that of the columns strengthened by FRP。 In addition, Bournas and Triantafillou (2011) analyzed the yield variation process of large- size RC columns strengthened with TRM under seismic action。 The study showed that TRM reinforcement could transfer the excess load distribution to the column center when the axial force of the steel bar reaches the critical load, and the deformation capacity of the strengthened columns was enhanced with the increase in the stiffness of the TRM。 Al-Salloum et al。 (2011) used TRM to strengthen a beam-column joint。 Pseudostatic test results showed that the TRC reinforcement could significantly increase the ulti- mate bearing capacity and deformation capacity of the joint and improve the ductility and the energy dissipation capacity。 The bear- ing capacity and ductility of the joint increased with the increase in the number of layers of the textile。 Abadel (2012) used finite- element simulation to study a beam-column joint strengthened with FRP and TRM and analyzed the load-displacement characteristics, ultimate load, and crack development model of the specimens。 It was also shown that the specimens strengthened with CFRP had the maximum bearing capacity but that the specimens strengthened with TRM were better able to limit the development of cracks。 At the end of the paper, a simple finite-element analysis model was presented。 Koutas et al。 (2014) studied the use of TRM to strengthen a three-story reinforced concrete frame wall that was filled with masonry。 Their study showed that the lateral bearing capacity of the frame structure strengthened with TRM increased by approximately 56% and that the deformation at the top of the structure improved by 52% when the ultimate bearing capacity was reached。 The lateral stiffness of the first story increased by approx- imately 2 times in the case of lower lateral displacement (approx- imately 0。5%)。 Accordingly, TRM can effectively prevent the shear failure of the columns and improve their shear capacity。 Comert et al。 (2014) tested reinforced concrete columns under a constant axial load and cyclic lateral displacement reversals before and after retrofitting with basalt mesh–reinforced sprayed glass–fiber rein- forced concrete (GFRC) jackets。钢筋混凝土柱抗震性能试验研究英文文献和中文翻译(2):http://www.youerw.com/fanyi/lunwen_83402.html