Optimal Design and Practical Considerations of Tuned Mass Dampers for Structural Control - Design Optimization of Active and Passive Structural Control Systems - page 134

Figure 4. (a) Transfer function of roof displacement of a 3-story building-MTMD system with different
α ; (b) Transfer function of MTMD stroke with different α

study, a real MTMD device was designed and
fabricated. Then, experiments were performed
on a 5m ×5m three-dimensional shake table. This
section describes the details and the results of the
study. It also provides a useful reference when a
real-life case is implemented.

building parameters; (3) Building-MTMD system
test: to evaluate the control effectiveness of
MTMD.
Two acceleration sensors and two displacement
sensors along the excitation direction at each floor
were deployed.

Test Program and Sensors Setup

The experimental structure used in the experimen-
tal study was a large-scale three-story steel frame
as shown in Figure 5. This structure is regarded as
a benchmark building designed for the demonstra-
tion of research on structural control and health
monitoring in Taiwan. It was a uniform building
with total of 18 tons in weight and 9 m in height.
The dimension of the rectangular floor is 3 m × 2
m. Four columns of H-shape (H150×150×7×10)
section with the same section orientation are used
for support. The weak axis of the column section
is also the test direction.
The test program includes three major steps:
(1) Bare building test: to identify the dynamic
parameters of the building at the time and to es-
tablish the uncontrolled response for future com-
parisons; (2) MTMD design and fabrication: to
create the control device based on the identified

Figure 5. Configuration of 3-story building and
MTMD device