A case study of the structural responses of a tall building in Singapore subjected to close-in detonations

2011 ◽  
Vol 20 (2) ◽  
pp. 223-246 ◽  
Author(s):  
Bing Li ◽  
Tso-Chien Pan ◽  
Anand Nair
Keyword(s):  
Tall Building ◽  
Structural Responses

Analytical structural behaviour of elastic flapping wings under the actuator effect

2018 ◽  
Vol 122 (1254) ◽  
pp. 1176-1198
Author(s):  
H. Zare ◽  
Seid H. Pourtakdoust ◽  
A. Bighashdel
Keyword(s):  
Conceptual Understanding ◽  
Body Motion ◽  
Flapping Wings ◽  
Inertial Forces ◽  
Structural Behaviour ◽  
Initial Value ◽  
Sinusoidal Motion ◽  
Structural Responses ◽  
First Time

ABSTRACTThe effect of inertial forces on the Structural Dynamics (SD) behaviour of Elastic Flapping Wings (EFWs) is investigated. In this regard, an analytical modal-based SD solution of EFW undergoing a prescribed rigid body motion is initially derived. The formulated initial-value problem is solved analytically to study the EFW structural responses, and sensitivity with respect to EFWs’ key parameters. As a case study, a rectangular wing undergoing a prescribed sinusoidal motion is simulated. The analytical solution is derived for the first time and helps towards a conceptual understanding of the overall EFW's SD behaviour and its analysis required in their designs. Specifically, the EFW transient and steady response in on-off servo condition is also attended.

Wind-resistant design and equivalent static wind load of base-isolated tall building: A case study

2020 ◽  
Vol 212 ◽  
pp. 110533 ◽  
Author(s):  
Zhihao Li ◽  
Guoqing Huang ◽  
Xinzhong Chen ◽  
Ying Zhou ◽  
Qingshan Yang
Keyword(s):  
Wind Load ◽  
Tall Building ◽  
Equivalent Static Wind Load

scholarly journals The Latest Demonstrated Technical Innovations in Sydney CBD Tall Building: Case Study

2017 ◽  
Vol 180 ◽  
pp. 49-60
Author(s):  
Lester Partridge ◽  
Eng Shin Gan
Keyword(s):  
Tall Building ◽  
Technical Innovations

scholarly journals Backstay Effect of Diaphragm in Tall Building

2020 ◽  
Vol 9 (3) ◽  
pp. 1578-1587
Keyword(s):  
Seismic Analysis ◽  
Response Spectrum ◽  
Retaining Wall ◽  
Tall Building ◽  
Structural Systems ◽  
Base Shear ◽  
High Rise ◽  
Structural Engineer ◽  
Structural Responses ◽  
Seismic Forces

Seismic analysis of structural systems with floor diaphragms has been a requisite in the recent past. The duty of a structural engineer is to be prudent about the behavior of every structural system adopted. Amongst the structural systems that are adopted world over, diaphragm with rigid and semi-rigid floor plate are adopted widely in the analysis. This research focuses on the backstay effect i.e. podium structural interaction with the tower area and consideration of retaining wall as increment of lateral stiffness as specified in latest tall building code IS6700:2016 for low and high rise structures. In the current study models were prepared with low to high rise storeys with rigid and flexible diaphragms considering backstay diaphragm placing tower at center and corner. The models were subjected to seismic forces; response spectrum along with the combination of the gravity loads. The structural responses like natural periods, base shear, displacement and inter storey drift were also studied.

scholarly journals Wind effects on ‘Z’ plan-shaped tall building: a case study

2016 ◽  
Vol 8 (3) ◽  
pp. 319-335 ◽  
Author(s):  
Rajdip Paul ◽  
Sujit Kumar Dalui
Keyword(s):  
Tall Building ◽  
Wind Effects

Mitigation of Wind-Induced Vibration of a 600m High Skyscraper

2019 ◽  
Vol 19 (02) ◽  
pp. 1950015 ◽  
Author(s):  
J. W. Zhang ◽  
Q. S. Li
Keyword(s):  
Vibration Control ◽  
Tall Buildings ◽  
Tall Building ◽  
Dynamic Responses ◽  
Structural Vibrations ◽  
Structural Dynamic ◽  
High Rise ◽  
Structural Responses ◽  
Detailed Assessment ◽  
Wind Induced Vibration

The serviceability of super-tall buildings depends primarily on the wind-induced structural responses, especially accelerations. To mitigate the discomforting structural vibrations, pendulum-type tuned mass damper (TMD) systems are commonly employed in high-rise buildings. However, for a super-tall building with a considerably low fundamental natural frequency, the suspension length of a pendulum-suspended TMD (PTMD) becomes too long to be feasible as it would occupy substantial building space. For the sake of saving valuable space in a super-tall building, a multistage PTMD system is recommended for vibration control. This paper presents a detailed assessment study on the performance of a multistage PTMD system designed for a 600 m high skyscraper located in a typhoon-prone region in China. Wind tunnel tests are first conducted to determine the wind loads on the building for estimation of structural dynamic responses for the scenarios with and without installation of the multistage PTMD system. Optimal design of the multistage PTMD system is then carried out through examining the mitigation efficiency of the PTMD system for a variety of mass and damping ratios. To restrict the strokes of mass dampers in the PTMD system, two-section damping strategy is proposed. The assessment results demonstrate that the multistage PTMD system with two-section damping can function efficiently to suppress the excessive vibrations of the skyscraper, while occupying a minimal space in vertical and horizontal directions. This paper aims to provide an effective and economic design strategy for vibration control of super-tall buildings under wind excitations.

Field measurements of wind and structural responses of a 70-storey tall building under typhoon conditions

2000 ◽  
Vol 9 (5) ◽  
pp. 325-342 ◽  
Author(s):  
Q. S. Li ◽  
C. K. Wong ◽  
J. Q. Fang ◽  
A. P. Jeary ◽  
Y. W. Chow
Keyword(s):  
Field Measurements ◽  
Tall Building ◽  
Structural Responses

scholarly journals Performance of Fiber Optical Sensors in the Structure of Concrete Dams to Deal with the Impact Actions (Case Study: Seimare Dam)

2019 ◽  
Vol 15 (1) ◽  
pp. 42-47
Author(s):  
Sarah Bakhtiari ◽  
Mohammad Ali Nekooie
Keyword(s):  
Optical Sensors ◽  
Structural Control ◽  
Optical Fiber Sensor ◽  
Arch Dam ◽  
Double Curvature ◽  
Fiber Optical Sensors ◽  
Structural Responses ◽  
Control Criteria ◽  
The Impact

AbstractDue to the fact that dams are considered one of the strategic infrastructures of a country, it is very important to protect it against destructive acts. Accordingly, sensors were used at various points to record structural responses to the dam. Based on the questionnaires completed by experts, accuracy had the score of 3.8 so it was considered as the most important feature of the sensors and the optical fiber sensor with a mean score of 3.93 was selected as the best sensor type among the available ones. For this project, a questionnaire was prepared based on Likert scale and SPSS method was used in TOPSIS software. Then, Seimare concrete double curvature arch dam was simulated in ABAQUS 2017 software and the proper positioning of the sensors for optimum performance was determined based on Finite Element Method analysis and according to structural control criteria such as tension, displacement, strain, velocity and so one.

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