@Article{cmes.2020.09054,
AUTHOR = {Yafei Zhang, Ping Tan, Haitao Ma, Marco Donà},
TITLE = {Improving the Seismic Performance of Staircases in Building Structures with a Novel Isolator},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {124},
YEAR = {2020},
NUMBER = {2},
PAGES = {415--431},
URL = {http://www.techscience.com/CMES/v124n2/39530},
ISSN = {1526-1506},
ABSTRACT = {A staircase provides the main escape way from a building in an emergency. Unfortunately, it may suffer severe damages or even collapse during an
earthquake. For improving the seismic performance of staircases, this paper
proposes an innovative staircase isolator with the features of lightweight, costeffective and ease of construction and replacement, which is formed by suitable
engineering plastic shims between rubber layers. A connection construction
scheme is also proposed for the isolated staircase. Systematic performance tests
have been carried out to characterize the isolator in terms of mechanic behavior
and ultimate states. The test results show that mechanical properties of the
proposed staircase isolator are excellent and suitable for staircase in building
structure. In order to investigate the influence of staircase on building structural
responses, time history analyses of a typical building structure without staircase (WS), with fixed staircase (FS) and with isolated staircase (IS) are
conducted and compared within the environment of SAP2000. Results show
that staircase isolation can effectively eliminate the diagonal bracing effect
of staircase slab and make structural components uniformly stressed. When
the novel isolator is employed for staircase in a building structure, there is
no vulnerable position in staircase and the performance of staircase in building
structure can be greatly enhanced.},
DOI = {10.32604/cmes.2020.09054}
}