scholarly journals Development of FE Model Updating for Three-Story Building considering Soil-Structure Interaction

2020 ◽  
Vol 20 (6) ◽  
pp. 261-270
Author(s):  
Gun Park ◽  
Jongwon Jung ◽  
Hyungchul Yoon
Keyword(s):  
Performance Evaluation ◽  
Service Life ◽  
Soil Structure ◽  
Model Updating ◽  
Soil Structure Interaction ◽  
Seismic Load ◽  
Fe Model ◽  
Construction Technology ◽  
Structure Interaction ◽  
Fe Model Updating

Owing to the development of construction technology, structures are becoming increasingly taller. Furthermore, with the improvement in construction materials, the service life of the structures is also increasing. The increased service life of large structures has highlighted the importance of structure maintenance and performance evaluation; thus, the need for an accurate model development for performance evaluation is increasing. This study predicts the structural characteristics through finite element (FE) model updating using a genetic algorithm (GA). The GA was applied to determine whether the structural member was damaged. In particular, it is intended to improve the reliability of the FE model updating during a seismic load by considering the soil-structure interaction effect that has been overlooked in the existing model updating study. The results of this study show that the model that considers the soil-structure interaction can estimate the dynamic characteristics of the structure more accurately compared to the model that does not consider the soil-structure interaction. The accuracy of the updated parameters by the proposed method was found to be over 90%.

scholarly journals Bridge Digital Twining Using an Output-Only Bayesian Model Updating Method and Recorded Seismic Measurements

2021 ◽  
Author(s):  
Farid Ghahari ◽  
Niloofar Malekghaini ◽  
Hamed Ebrahimian ◽  
Ertugrul Taciroglu
Keyword(s):  
Real World ◽  
Bayesian Model ◽  
Soil Structure ◽  
Model Updating ◽  
Free Field ◽  
Interaction Effects ◽  
Soil Structure Interaction ◽  
Fe Model ◽  
Numerical Verification ◽  
Structure Interaction

Rapid post-earthquake damage diagnosis of bridges can guide decision-making for emergency response management and recovery. This can be facilitated using digital technologies to remove the barriers of manual post-event inspections. Prior mechanics-based Finite Element (FE) models can be used for post-event response simulation using the measured ground motions at nearby stations; however, the damage assessment outcomes would suffer from uncertainties in structural and soil material properties, input excitations, etc. For instrumented bridges, these uncertainties can be reduced by integrating sensory data with prior models through a model updating approach. This study presents a sequential Bayesian model updating technique, through which a linear/nonlinear FE model, including soil-structure interaction effects, and the foundation input motions are jointly identified from measured acceleration responses. The efficacy of the presented model updating technique is first examined through a numerical verification study. Then, seismic data recorded from the San Rogue Canyon Bridge in California are used for a real-world case study. Comparison between the free-field and the foundation input motions reveals valuable information regarding the soil-structure interaction effects at the bridge site. Moreover, the reasonable agreement between the recorded and estimated bridge responses shows the potentials of the presented model updating technique for real-world applications. The updated FE model is considered as the digital twin of the bridge and can be used to analyze the bridge and monitor the structural response at element, section, and fiber levels to diagnose the location and severity of any potential damage mechanism.

Research of Longitudinal Seismic Response of Self-Anchored Cable-Stayed Suspension Bridge under Pile-Soil-Structure Interaction

2011 ◽  
Vol 255-260 ◽  
pp. 1167-1170
Author(s):  
Feng Miao ◽  
Wang Bo ◽  
Guan Ping
Keyword(s):  
Seismic Response ◽  
Soil Structure ◽  
Suspension Bridge ◽  
Soil Structure Interaction ◽  
Response Analysis ◽  
Fe Model ◽  
Longitudinal Displacement ◽  
Finite Element Program ◽  
Structure Interaction ◽  
Element Program

Based on scheme of Dalian gulf cross-sea bridge, in this paper, a 3-dimensional FE model for Self-anchored cable-stayed suspension bridge is established with finite element program and pile-soil-structure interaction is simulated by use of the equivalent embed fixation model. Based on the FE model, model analysis is carried out and the effects of pile-soil-structure interaction on dynamic behavior of long-span self-anchored cable-stayed suspension bridge are specially studied. The seismic response analysis result considering that pile-soil-structure interaction was compared with that of without considering such interaction. The analysis result show that interaction extend the nature period of structure, has the greatest impact to the first vibration mode; meanwhile, enlarged longitudinal displacement and moment of stiffening beam in middle of main span, longitudinal displacement on top of tower and axial force at bottom, but reduced the moment of tower at bottom. The research results provide some theoretical foundation to composite structure system.

scholarly journals Performance evaluation of an MR damper in building structures considering soil-structure interaction effects

2009 ◽  
Vol 18 (1) ◽  
pp. 105-115 ◽  
Author(s):  
Sung-Kyung Lee ◽  
Sang-Hyun Lee ◽  
Kyung-Won Min ◽  
Byoung-Wook Moon ◽  
Kyung-Jo Youn ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Soil Structure ◽  
Mr Damper ◽  
Interaction Effects ◽  
Soil Structure Interaction ◽  
Building Structures ◽  
Structure Interaction

Performance Evaluation of a Strengthened Building Considering the Soil-Structure Interaction

2008 ◽  
Vol 12 (sup2) ◽  
pp. 222-233 ◽  
Author(s):  
Engin Orakdöğen ◽  
Konuralp Girgin ◽  
M. Hasan Boduroğlu ◽  
Berna Büyükşişli ◽  
Tansu Gökçe
Keyword(s):  
Performance Evaluation ◽  
Soil Structure ◽  
Soil Structure Interaction ◽  
Structure Interaction

Horizontal Seismic Response of Self-Anchored Cable-Stayed Suspension Bridge under Pile-Soil-Structure Interaction

2011 ◽  
Vol 63-64 ◽  
pp. 421-424
Author(s):  
Miao Feng ◽  
Guan Ping ◽  
Wang Bo
Keyword(s):  
Seismic Response ◽  
Soil Structure ◽  
Suspension Bridge ◽  
Horizontal Displacement ◽  
Soil Structure Interaction ◽  
Response Analysis ◽  
Fe Model ◽  
Finite Element Program ◽  
Structure Interaction ◽  
Element Program

Based on scheme of Dalian gulf cross-sea bridge, in this paper, a 3-dimensional FE model for Self-anchored cable-stayed suspension bridge is established with finite element program and pile-soil-structure interaction is simulated by use of the equivalent embed fixation model. Based on the FE model, model analysis is carried out and the effects of pile-soil-structure interaction on dynamic behavior of long-span self-anchored cable-stayed suspension bridge are specially studied. The seismic response analysis result considering that pile-soil-structure interaction was compared with that of without considering such interaction. The analysis result show that interaction reduced horizontal displacement in middle span of stiffening beam and top of tower, horizontal moment not only at bottom of tower, but also assistant piers. The research results provide some theoretical foundation to composite structure system.

scholarly journals Analysis of the Second Order Effect of the SSI on the Building during a Seismic Load

2021 ◽  
Vol 6 (2) ◽  
pp. 20
Author(s):  
El Mehdi Echebba ◽  
Hasnae Boubel ◽  
Abdelhay El Omari ◽  
Mohamed Rougui ◽  
Mimoun Chourak ◽  
...  
Keyword(s):  
Soil Structure ◽  
Cohesive Soil ◽  
Order Effect ◽  
Second Order ◽  
Soil Structure Interaction ◽  
Soil Conditions ◽  
Soil Parameters ◽  
Seismic Load ◽  
Structure Interaction ◽  
Story Drift

The type and the properties of the soil can potentially intensify the internal forces on buildings during seismic loads. To predict the effects of the soil parameters on the soil–structure interaction of buildings, it is necessary to consider the soil–structure interaction (SSI) in the modeling process. Therefore, this document aims to evaluate the seismic effect on the maximal displacement and inter-story drift, and evaluate the behavior of buildings under the second-order effect known in the literature as the P-delta effect. For this purpose, three cases of buildings with 5, 10 and 15 stories were modelled using a FLAC 2D finite-difference element calculation software with infinite soil conditions, including five types of base with four types of soil (one cohesive soil and three non-cohesive soils) considering the soil–structure interaction and a fixed base (without soil–structure interaction). According to the results for the above-mentioned boundary, as the height of the building increases and due to the weak properties of the soil, we notice that the maximal displacements and inter-story drift increase considerably. To that purpose, we recommend considering the second-order effect in seismic design, especially for non-cohesive soil.

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