XIONG Ergang, GUO Fan, ZHANG Meng, et al. Mechanical behavior of a new horizontal connection device for fabricated shear wall[J]. 2022, 54(11): 112-121.
DOI:
XIONG Ergang, GUO Fan, ZHANG Meng, et al. Mechanical behavior of a new horizontal connection device for fabricated shear wall[J]. 2022, 54(11): 112-121.DOI: 10.11918/202111005.
Mechanical behavior of a new horizontal connection device for fabricated shear wall
The mechanical properties of the connection joints/horizontal joints of the fabricated shear wall structure play a vital role in the fabricated structure. To improve the seismic performance of the fabricated shear wall structure
we designed and developed a new type of horizontal connection device based on the energy dissipation technology. Through the design
two kinds of horizontal connection devices with different numbers of bolts were prepared. The dynamic mechanical properties of the devices under different sinusoidal loading frequencies were tested
and the influences of bolt preload
loading frequency
and bolt number on the mechanical properties of the device were explored. The influence of temperature rise caused by friction on the mechanical properties of the device was investigated. Results show that the device could ensure the reliable connection of the structure and meanwhile consume much seismic energy due to the internal friction
so as to effectively reduce the seismic response of the structure and protect the main structure. In addition
the bolt preload linearly correlated with the energy dissipation capacity and secant stiffness of the device
but had little effect on the equivalent damping ratio. The mechanical properties of the horizontal connection device were hardly affected by the loading frequency. Increasing the number of bolts could greatly improve the energy consumption capacity of the device. Bolt preload and loading frequency were important factors for the temperature rise in the device
but the temperature change in the device had little effect on its mechanical properties.