Experimental Investigate on Seismic Performance of RC Hill-Side Stilted Buildings Affected by Vertical Stiffness Irregularity

ABSTRACT

In this study, the ratio of lateral stiffness of the stilted story to that of the second story was proposed as the story stiffness ratio (SSR) to quantify vertical stiffness irregularities of hillside stilted buildings. A quasi-static experiment was conducted on a plane stilted frame with an SSR of 40 in the slope direction. Experimental results were compared with those of a stilted frame with an SSR of 1.01. The results show that SSR is an important factor influencing seismic failure modes of stilted buildings. As SSR decreases, structural ductility and deformation capacity improve, and stiffness degradation decelerates.

KEYWORDS:

• Stilted buildings
• story stiffness ratio
• quasi-static experiment
• failure mode
• seismic performance

Disclosure Statement

No potential conflict of interest was reported by the author(s).

Data Availability Statement

Data will be made available on request.

Additional information

Funding

This work was sponsored by the National Science Foundation of China (NSCF) [grant numbers 52278481, 51638001] and Graduate Scientific Research and Innovation Foundation of Chongqing [grant numbers CYB 22030].