Distributed TLDs in RC floors and their vibration reduction efficiency
Ye Lieping (Ò¶ÁÐƽ)1, Lu Xinzheng (½ÐÂÕ÷)1, Qu Zhe (Çú ÕÜ)1
and Hou Jianqun (ºî½¨Èº)2
1. Key Laboratory of Structural Engineering and Vibration of China Education
Ministry, Department of Civil
Engineering,Tsinghua University, Beijing 100084, China
2. Tsinghua Institute of Architectural Design, Beijing 100084, China
Abstract:
A novel distributed tuned liquid damper (DTLD)
for reducing vibration in structures is proposed in this paper. The basic
working principle of the DTLDs is to fill the empty space inside the pipes or
boxes of cast-in-situ hollow reinforced concrete (RC) floor slabs with water or
other liquid. The pipes or boxes then work as a series of small TLDs inside the
structure, to increase the damping ratio of the entire structural system.
Numerical simulation that accounts for the fluid-structure coupling effect is
carried out to evaluate the vibration-reduction efficiency of the DTLDs. The
results show that the DTLDs are able to considerably increase the damping of the
structure and thus reduce its vibration. An additional benefit is that the DTLDs
do not require architectural space to be added to the structure.
Keywords: distributed tuned liquid damper (DTLD);
fluid-structure interaction (FSI); vibration reduction; hollow floor slab
