Influence of foundation settlements in load redistribution on columns in a monitoring construction - Case Study

Savaris, Gustavo; Hallak, Patrícia H.; Maia, Paulo César de Almeida

doi:10.1590/s1983-41952010000300006

Cited by 5 publications

(5 citation statements)

References 2 publications

(1 reference statement)

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“…In their comparison of a real building with a numerical simulation, Savaris et al [16] verify the importance of joint consideration of structure and foundations. The simulation was able to prove the redistribution of the loads, and the settlements monitoring equipment was effective in its verification.…”

Section: Soil-structure Interaction (Ssi)mentioning

confidence: 99%

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Analysis of constructive effect and soil-structure interaction in tall building projects with shallow foundations on sandy soils

Marques

Feitosa

Bicalho

et al. 2021

Rev. IBRACON Estrut. Mater.

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The influence of incremental constructive effects (IE) and soil-structure interaction (SSI) on high-rise buildings of reinforced concrete with shallow foundations on sandy soils were analyzed. IE and SSI evaluations were carried out by the parameters of global instability, maximum horizontal displacements, foundation loads, and settlements of a symmetrical and non-symmetrical plant of a 23-storey building For the analysis of the IE, the variation of the modulus of elasticity was considered over time along with the phases of application of loads in the building. For ISS analysis, the continuous medium was considered, and the calculation model considers a multi-spring-mass system under the foundation of the building. The results show a significant redistribution in the foundation efforts and suggest that a failure in considering these effects along with the structure can lead to projects that do not meet the standard specifications regarding stability parameters and overall structure displacements.

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Section: Soil-structure Interaction (Ssi)mentioning

confidence: 99%

“…On the other hand, Alves and Feitosa [12], Danziger et al [13], Feitosa and Alves [14], Gusmão [15], Savaris et al [16], Pavan et al [17], Agrawal and Harne [18] study (SSI) for buildings, but don't consider the influence of the incremental effect on the analyses performed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of constructive effect and soil-structure interaction in tall building projects with shallow foundations on sandy soils

Marques

Feitosa

Bicalho

et al. 2021

Rev. IBRACON Estrut. Mater.

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“…with finite element analysis modeling. Savaris et al (2010) started by modeling a simple two-dimensional frame consisting of one beam supported by three columns and expected the center column to settle more than the exterior ones by virtue of carrying more load.…”

Section: Numerical Modelingmentioning

confidence: 99%

Enhancing Building Resistance to Differential Settlement with Canadian Seismic Design Provisions

Desbrousses

Lin

2021

Pract. Period. Struct. Des. Constr.

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Enhancing Building Resistance to Differential Settlement with Canadian Seismic Design Provisions Romaric Léo Esteban DesbroussesThis research project focuses on evaluating the influence of Canadian seismic design provisions on the resistance of reinforced concrete buildings against the differential settlement of their foundation. Three types of moment-resisting frame buildings located Vancouver, Montreal and Toronto are designed in accordance with the latest editions of the National Building Code of Canada and the Canadian concrete design standards. These locations are selected to represent high, moderate, and low seismic hazard regions respectively. The buildings in each location are designed for three span lengths, namely, 4m, 6m and 8m. A total of nine finite element models are developed using SAP2000 with structural element non-linearity being represented through plastic hinges at the ends of beams and columns. Both P-delta effects and the interaction between axial loads and moments are considered in the modeling. A non-linear analysis is performed on each model by gradually subjecting a center column to a settlement of 100mm. The analysis reveals that buildings with a shorter span (e.g., 4m) length are more vulnerable to settlementinduced damage than buildings with longer spans (e.g., 8m). Failure of the settling column occurs at settlements that exceed the range of maximum allowable differential settlements prescribed in the Canadian Foundation Engineering Manual. However, all the studied buildings survive the maximum 0.75-inch settlement allowed by ACI. Failure of the buildings is only observed at excessive settlements such as 50mm for the 4m-span This project would not have been possible without her help.I would also like to extend my gratitude to all the faculty and staff in the department who made me feel part of the Concordia family throughout the course of both my undergraduate and graduate studies at the university, and who were always happy to lend me a helping hand. Special thanks are due to Dr. Jassim Hassan whose office door was always open to me whenever I needed help and thanks to whom I became a teaching assistant.I am very grateful for my laboratory partners whose friendliness, support, and engineering expertise were very much appreciated, particularly Mahmoud Khalifa and Abdelhady Hosny who always took the time to answer my questions.Last but not least, I am incredibly thankful for my friends and loved ones who have supported me throughout my journey as a research student. viTABLE OF CONTENTS LIST OF TABLES .

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“…In terms of structural design, many engineers still design structures without considering the effects of settlement [10]. Amancio [11] states that such a condition often occurs since predicting settlements in structures is still a complex factor due to the difficulty of obtaining parameters such as soil strength and deformability.…”

Section: Introductionmentioning

confidence: 99%

Reliability analysis of reinforced concrete frames subjected to post-construction settlements

Junior¹,

Moraes

Beck

et al. 2023

Rev. IBRACON Estrut. Mater.

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Most papers in the literature address reliability analysis of isolated elements, like beams and columns. However, symmetry and regularity are often exploited in the construction of regular RC frames, resulting in the same or similar designs for all columns of a floor or all beams of a building. This leads to significant differences in member reliability, due to different axial load to bending moment ratios, in different parts of the structure. Moreover, load effects increase, and symmetry is lost under individual support settlements. In this scenario, reliability analyses are performed, for an intact 4-floors and 3-spans RC frame; and considering different settlement conditions. Monte Carlo simulation is performed, considering uncertainties in dead and live loading, and steel and concrete strengths. The results show that a settlement of 10 mm, corresponding to an angular distortion of 1/500, reduced the average reliability of the frame by only 14%, just the same, it reduced the reliability index of several cross-sections of the beams to up to 2.40, value lower than that recommended in the Model Code 2010. It is concluded that the methodology used in this work presents an important tool for the analysis of events not foreseen in the design, supporting the decision making about the need for intervention in the structures.

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Influence of foundation settlements in load redistribution on columns in a monitoring construction - Case Study

Cited by 5 publications

References 2 publications

Analysis of constructive effect and soil-structure interaction in tall building projects with shallow foundations on sandy soils

Analysis of constructive effect and soil-structure interaction in tall building projects with shallow foundations on sandy soils

Enhancing Building Resistance to Differential Settlement with Canadian Seismic Design Provisions

Reliability analysis of reinforced concrete frames subjected to post-construction settlements

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