Identification of the dynamic properties of a reinforced concrete coupled shear wall residential high-rise building

2012 ◽  
Vol 39 (6) ◽  
pp. 631-642 ◽  
Author(s):  
Natthapong Areemit ◽  
Michael Montgomery ◽  
Constantin Christopoulos ◽  
Agha Hasan
Keyword(s):  
Reinforced Concrete ◽  
State Of The Art ◽  
Dynamic Properties ◽  
Shear Wall ◽  
Full Scale ◽  
Design Parameters ◽  
High Rise ◽  
Coupled Shear Wall ◽  
Current State

As high-rise buildings increase with height and slenderness, they become increasingly sensitive to dynamic vibrations, and therefore the natural frequency of vibration and damping ratio are very important design parameters, as they directly impact the design wind forces. Recent advances in sensing and computing technology have made it possible to monitor the dynamic behaviour of full-scale structures, which was not possible in the past. Full-scale validation of the dynamic properties is useful for high-rise designers to verify design assumptions, especially since recent measurements have shown that damping decreases as the height of the building increases, and in situ damping measurements have been lower than many currently assumed design values, potentially leading to unconservative designs. A 50-storey residential building in downtown Toronto, with a reinforced concrete coupled shear wall lateral load resisting system with outriggers was monitored using current state-of-the-art sensing technologies and techniques to determine, in situ, the dynamic properties under real wind loads. The in situ measurements were then compared with results obtained using current state-of-the-art computer modelling techniques.

scholarly journals Investigation of Settlement and Load Sharing on Piled Rafts by Monitoring Full-Scale Structures

2011 ◽  
Vol 51 (3) ◽  
pp. 513-532 ◽  
Author(s):  
Kiyoshi Yamashita ◽  
Takeshi Yamada ◽  
Junji Hamada
Keyword(s):  
Load Sharing ◽  
Full Scale ◽  
Scale Structures

scholarly journals Working with Uncertainties: An Adaptive Fabrication Workflow for Bamboo Structures

2021 ◽  
pp. 265-279
Author(s):  
Yue Qi ◽  
Ruqing Zhong ◽  
Benjamin Kaiser ◽  
Long Nguyen ◽  
Hans Jakob Wagner ◽  
...  
Keyword(s):  
Computer Vision ◽  
Large Scale ◽  
Full Scale ◽  
Minor Importance ◽  
Sustainable Building ◽  
Large Scale Structures ◽  
Sensory Data ◽  
Scale Structures ◽  
Performance Domains ◽  
Stiff Joint

AbstractThis paper presents and investigates a cyber-physical fabrication workflow, which can respond to the deviations between built- and designed form in real-time with vision augmentation. We apply this method for large scale structures built from natural bamboo poles. Raw bamboo poles obtain evolutionarily optimized fibrous layouts ideally suitable for lightweight and sustainable building construction. Nevertheless, their intrinsically imprecise geometries pose a challenge for reliable, automated construction processes. Despite recent digital advancements, building with bamboo poles is still a labor-intensive task and restricted to building typologies where accuracy is of minor importance. The integration of structural bamboo poles with other building layers is often limited by tolerance issues at the interfaces, especially for large scale structures where deviations accumulate incrementally. To address these challenges, an adaptive fabrication process is developed, in which existing deviations can be compensated by changing the geometry of subsequent joints to iteratively correct the pose of further elements. A vision-based sensing system is employed to three-dimensionally scan the bamboo elements before and during construction. Computer vision algorithms are used to process and interpret the sensory data. The updated conditions are streamed to the computational model which computes tailor-made bending stiff joint geometries that can then be directly fabricated on-the-fly. In this paper, we contextualize our research and investigate the performance domains of the proposed workflow through initial fabrication tests. Several application scenarios are further proposed for full scale vision-augmented bamboo construction systems.

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