Aseismic performance and anti-shear capacity of a new prefabricated monolithic fibre-reinforced recycled concrete shear wall
HUANG Wei1,2,3, SUN Yujiao1,2,3, SHENG Yawen4, LI Bin5, HUANG Hui1,2,3
1.School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055，China；
2.Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education, Xi’an University of Architecture & Technology, Xi’an 710055， China；
3.Collaborative Innovation Center for Assembled Buildings in Western China,Xi’an 710055， China；
4.Pearl River Water Planning Survey and Design Co., Ltd., Anhui Branch, Wuhu 241000， China;
5.School of Urban Planning and Municipal Engineering, Xi’an Polytechnic University, Xi’an 710600， China
Abstract：New prefabricated monolithic fiber-reinforced recycled concrete (NPFRC) shear wall is composed of prefabricated green fiber reinforced concrete wall panels and cast-in-place edge members to adopt well-shaped reinforcement arrangement, vertical horse toothed joint and horizontal mortar setting connection, and have characteristics of ecological energy saving, energy consumption and shock absorption, rapid construction and so on. Here, to study aseismic performance of NPFRC shear walls, four specimens were made. Through quasi-static tests, effects of fiber types and wall processing methods on failure mode, hysteretic curve, deformation performance, stiffness degradation and energy dissipation capacity of specimens were analyzed. The test results showed that fiber types have a larger influence on aseismic performance of NPFRC shear wall; connections between wall panels and foundation are decisive to keep load-bearing capacity of NPFRC shear wall; strengthening horizontal seam connection is the key to study NPFRC shear wall. Based on the softened strut-and-tie model, considering fiber action to strengthen anti-shear strength of NPFRC shear wall, the shear-bearing capacity formula of NPFRC shea wall was proposed, and theoretical values were compared with test results. The contrastive analysis results showed that theoretical value is about 3%-9% lower than test one, so the former is conservative and has a good accuracy.
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