JIANG Shaofei, ZHAO Jian, LIAN Shenghang. Restoring force model for bolted-connection assembled shear wall[J]. 2022, 54(4): 55-64.
DOI:
JIANG Shaofei, ZHAO Jian, LIAN Shenghang. Restoring force model for bolted-connection assembled shear wall[J]. 2022, 54(4): 55-64.DOI: 10.11918/202106068.
Restoring force model for bolted-connection assembled shear wall
In order to further improve the construction efficiency and structural integrity of precast reinforced concrete (RC) shear walls
a bolted-connection assembled shear wall (BASW) with integrated steel connection joints was proposed
including fully assembled shear wall and semi-assembled shear wall with cast-in-place edge members at both ends. One piece of the cast-in-place ordinary concrete shear wall
three pieces of the fully assembled shear wall
and three pieces of the semi-assembled shear wall were designed. The comparison parameters were assembly methods and shear-span ratio
and quasi-static tests were carried out. Test results show that the shear-span ratio and assembly methods had significant impact on the seismic performance of the shear wall. Due to the connecting steel frame
the failure surface of the fully assembled shear wall was lifted
and the peak bearing capacity was higher than that of cast-in-place and semi-assembled shear walls with the same shear-span ratio. Combined with numerical analysis
the influences of the parameters such as assembly rate
shear-span ratio
axial compression ratio
edge component hoop ratio
and edge component size on the skeleton lines and hysteretic performance of the specimens were studied. According to the results
the three-fold skeleton line model and restoring force model of the new type BASW were established. It was found that the proposed restoring force model was in good agreement with the test curves
which can reflect the hysteretic performance of the wall. This indicates that the models can be used for the elastoplastic analysis of these types of BASWs.