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Yunsong Li

Bio: Yunsong Li is an academic researcher from Tongji University. The author has contributed to research in topics: Damper & Incremental Dynamic Analysis. The author has an hindex of 2, co-authored 2 publications receiving 16 citations.

Papers
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Journal ArticleDOI
TL;DR: Using the incremental dynamic analysis and fragility analysis, the seismic performance of five types of dampers designed by the Chinese code under the main shock-aftershock sequences are compared from the respective of structural collapse, damage and the equipment's acceleration failure.

15 citations

Journal ArticleDOI
Wei Guo1, Jun Wu2, Yao Hu1, Yunsong Li2, Tony Yang 
TL;DR: In this study, a nine-story benchmark steel building is established, and three different and typical types of dampers are designed according to the Chinese Building Code to realize structural vibration control under strong earthquake excitation.
Abstract: Adding dampers is a commonly adopted seismic risk mitigation strategy for modern buildings, and the corresponding design procedure of dampers has been well established by the Chinese Building Code. Even though all types of dampers are designed by the same procedure, actual seismic performance of the building may differ from one to the others. In this study, a nine-story benchmark steel building is established, and three different and typical types of dampers are designed according to the Chinese Building Code to realize structural vibration control under strong earthquake excitation. The seismic response of the prototype building equipped with a viscoelastic damper, viscous damper and buckling-restrained brace (BRB) subjected to 10 earthquake records are calculated, and Incremental Dynamic Analysis (IDA) is performed to describe progressive damage of the structure under increasing earthquake intensity. In the perspective of fragility, it shows that the viscoelastic damper has the highest collapse margin ratio (CMR), and the viscous damper provides the best drift control. Both the BRB and viscoelastic dampers can effectively reduce the floor acceleration responses in the mid-rise building.

11 citations

Journal ArticleDOI
TL;DR: In this article , an effective damage detection method based on the combined modal strain energy index is proposed to detect the location of the damaged members in a single-layer latticed shells.

10 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, a low-rise precast wall panel structure with bolt connections is proposed, which has advantages of convenient and rapid assembly, and a shaking table test of a 1 2 scaled three-story model is conducted, by which the structural dynamic responses, damage pattern, and seismic fragility are analyzed.

58 citations

Journal ArticleDOI
Zhipeng Zhai1, Wei Guo1, Yaozhuang Li1, Zhiwu Yu1, Hongpeng Cao, Dan Bu 
TL;DR: A trilinear force-displacement model indicating three prescribed performance objectives at three seismic hazard levels is adopted to improve the performance-based plastic design method, and the proposed improved PBPD method can be used for designing seismic resilient fused high-rise buildings.

23 citations

Journal ArticleDOI
TL;DR: Using the incremental dynamic analysis and fragility analysis, the seismic performance of five types of dampers designed by the Chinese code under the main shock-aftershock sequences are compared from the respective of structural collapse, damage and the equipment's acceleration failure.

15 citations

Journal ArticleDOI
TL;DR: In this article, a novel steel strip damper is proposed to enhance seismic resilience of high-rise steel frame in high seismic intensity regions, which consists of external casing, internal casing and steel strip fuses dissipating seismic energy via bending-dominated deformation throughout the entire section, which is convenient for post-earthquake replacement.

13 citations

Journal ArticleDOI
TL;DR: The results show that the employed damper can effectively mitigate dynamic responses of low-, mid- and high-rise frames; the effect of damper failure on IDA curves is significant at relatively large seismic intensity, especially for the high- rise frame.

11 citations