Experimental formula for the fundamental period of RC buildings with shear-wall dominant systems

Revisiting Eurocode 8 formulae for periods of vibration and their employment in linear seismic analysis

“…(11) which includes explicitly the dimensions of the walls, appears to be better correlated to the period of vibration, but was nevertheless found to be too conservative. Both Goel and Chopra [1998] and Lee et al [2000] decided to calibrate an equation for the period of vibration of shear wall structures by considering the fundamental period of a uniform cantilever beam with both flexural and shear deformations. Figure 2 shows the period of vibration of a cantilever with both flexural and shear deformations (based on Dunkerley's method -see Inman [1996]) divided by the period of vibration of a pure-flexural cantilever as a function of the ratio of height to depth (H/D).…”

Dynamic characteristics of light-frame wood buildings

“…The measured data used for the derivation of Equation 1-20 were based on reinforced concrete shear wall buildings. Large scatter was observed in the collected data when the measured period was related to only the height of the structures (Saatcioglu and Humar, 2003 Lee et al (2000), Morales (2000), and Goel and Chopra (1998)) to evaluate the applicability of various code period equations for concrete buildings. A summary of these studies is provided in section 2.1.…”

“…The code period formula used to calculate the building's fundamental period has been evaluated by several researchers (Goel and Chopra 1998;Lee et al, 2000;Morales, 2000;Gilles, 2011) for its applicability to concrete shear wall buildings. Only one study proposed an alternative period equation for wood based buildings (Camelo, 2003), which presents a clear need to evaluate the code period equation, using a comprehensive data base of natural periods from real buildings.…”

Establishing the fundamental period of light-frame wood buildings on the basis of ambient vibration tests

“…An improved formula was then suggested, which 78 incorporated a parameter related to shear wall dimensions. Lee et al (2000) focused on the 79 evaluation of the period formula in the Korean building code using a data base of 50 reinforced 80 concrete shear wall buildings whose periods were measured using ambient vibration testing. Fewer studies have been conducted on the dynamic characteristics of light-frame wood 97 buildings.…”