Preliminary results of the shake-table testing for the development of a diaphragm seismic design methodology

Seismic design of precast concrete diaphragms. a guide for practicing engineers

“…Experimental results related to the diaphragm aspect of the DSDM project are summarized in Schoettler et al (2008) and Zhang et al (2011). The design approach was developed through numerical models which were first calibrated against the UCSD and Lehigh experiments and used to conduct extensive parametric studies.…”

Seismic Behavior of Prestressed Precast Shear Wall Buildings Using Multiple Rocking Joints

“…Column-foundation connection is similar with the wall-foundation connection. The connection between the floors and the precast wall panels is assumed to be a vertical sleeved-type connection to allow the lateral forces to be transmitted from the floor to the wall while preventing any vertical actions to be transmitted from the wall panel to floor [15]. A listing of the important features of PPCW buildings is provided in Table 1 and Table 2 Note: ρ ptc = area ratio of PT steel in columns; ρ ptb = area ratio of PT steel in beams; Beam(NS) means beams in NS direction; Beam(EW) means beams in EW direction.…”

Finite Element Modeling of “Rocking Walls”

“…Detailed information on the test specimen geometry, material tests and loading sequence can be found elsewhere [11,12].…”

“…The dynamic interaction between rocking and hybrid walls and the rest of the structure was investigated during the DSDM project [10] in which shake table tests were conducted on a three story half-scale precast concrete structure whose lateral force resisting system consisted entirely on rocking and hybrid walls [11,12].…”

“…The present paper focuses on numerical modeling of rocking walls investigating the effects of different modeling techniques in both nonlinear static and dynamic analyses. The rocking wall chosen as reference for the present study is extrapolated from the aforementioned DSDM project [11,12]. Being the aim of the paper the investigation of finite modeling techniques, there is no interest in modeling the whole building in order to capture rocking wall and floors interaction and wall foundation influence; therefore the floors are modeled as point masses and the foundation is deliberately made rigid.…”