Seismic response analysis of frame structures with uneven settlement of foundation considering soil-structure interaction
Uneven settlement of foundation (USF) has a significant effect on the seismic response of rigid foundation structures. However, the main reason for USF is that the balance between superstructure and site soil is failure. For investigating seismic response characteristics of the USF structure conside...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
|
| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123023007016 |
| _version_ | 1797385175155343360 |
|---|---|
| author | Haodong Shang Chao Bao Huxiang Wang Xiaotong Ma Jixing Cao Jiaoyan Du |
| author_facet | Haodong Shang Chao Bao Huxiang Wang Xiaotong Ma Jixing Cao Jiaoyan Du |
| author_sort | Haodong Shang |
| collection | DOAJ |
| description | Uneven settlement of foundation (USF) has a significant effect on the seismic response of rigid foundation structures. However, the main reason for USF is that the balance between superstructure and site soil is failure. For investigating seismic response characteristics of the USF structure considering soil-structure interaction (SSI), USF closer to reality is achieved by nonlinear direct integration method and Stage-Construction method. And the model reliability is verified by Sway-Rocking model and Lagrange energy method. Five different models, three seismic intensities, and different values of USF are performed. The natural period, inter-story drift ratios, the plastic hinges rate, and torsional angles are extracted to investigate structural seismic response. The results show that the effect of SSI on the magnitude of increase in structural inter-story drift ratio is not monotonous with the increase of USF in the presence of earthquakes. The USF structure considering SSI may significantly affect its seismic response, and will suffer more structural damage compared to the rigid foundation and the even settlement foundation. The rigid foundation structure with large value of USF leads to severe stretching on the settlement area and increases damage to the structure. Finally, the USF structures have relatively large torsional angles at the top story, and will exhibit significant torsional behavior. Hence, it is necessary and reasonable to consider SSI in the seismic design of USF structures. The research results can provide some references for seismic design. |
| first_indexed | 2024-03-08T21:50:21Z |
| format | Article |
| id | doaj.art-c73e5a8f89474a1c8da994e418203d35 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-03-08T21:50:21Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-c73e5a8f89474a1c8da994e418203d352023-12-20T07:36:15ZengElsevierResults in Engineering2590-12302023-12-0120101574Seismic response analysis of frame structures with uneven settlement of foundation considering soil-structure interactionHaodong Shang0Chao Bao1Huxiang Wang2Xiaotong Ma3Jixing Cao4Jiaoyan Du5School of Civil Engineering and Hydraulic Engineering, Ningxia University, Ningxia Hui Autonomous Region, ChinaSchool of Civil Engineering and Hydraulic Engineering, Ningxia University, Ningxia Hui Autonomous Region, China; Corresponding author.School of Civil Engineering and Hydraulic Engineering, Ningxia University, Ningxia Hui Autonomous Region, ChinaSchool of Civil Engineering, North Minzu University, Ningxia Hui Autonomous Region, ChinaDepartment of Civil and Environmental Engineering, National University of Singapore, SingaporeSchool of Civil Engineering and Hydraulic Engineering, Ningxia University, Ningxia Hui Autonomous Region, ChinaUneven settlement of foundation (USF) has a significant effect on the seismic response of rigid foundation structures. However, the main reason for USF is that the balance between superstructure and site soil is failure. For investigating seismic response characteristics of the USF structure considering soil-structure interaction (SSI), USF closer to reality is achieved by nonlinear direct integration method and Stage-Construction method. And the model reliability is verified by Sway-Rocking model and Lagrange energy method. Five different models, three seismic intensities, and different values of USF are performed. The natural period, inter-story drift ratios, the plastic hinges rate, and torsional angles are extracted to investigate structural seismic response. The results show that the effect of SSI on the magnitude of increase in structural inter-story drift ratio is not monotonous with the increase of USF in the presence of earthquakes. The USF structure considering SSI may significantly affect its seismic response, and will suffer more structural damage compared to the rigid foundation and the even settlement foundation. The rigid foundation structure with large value of USF leads to severe stretching on the settlement area and increases damage to the structure. Finally, the USF structures have relatively large torsional angles at the top story, and will exhibit significant torsional behavior. Hence, it is necessary and reasonable to consider SSI in the seismic design of USF structures. The research results can provide some references for seismic design.http://www.sciencedirect.com/science/article/pii/S2590123023007016Soil-structure interactionUneven settlement of foundationSeismic responseTorsion effectsSeismic damage |
| spellingShingle | Haodong Shang Chao Bao Huxiang Wang Xiaotong Ma Jixing Cao Jiaoyan Du Seismic response analysis of frame structures with uneven settlement of foundation considering soil-structure interaction Results in Engineering Soil-structure interaction Uneven settlement of foundation Seismic response Torsion effects Seismic damage |
| title | Seismic response analysis of frame structures with uneven settlement of foundation considering soil-structure interaction |
| title_full | Seismic response analysis of frame structures with uneven settlement of foundation considering soil-structure interaction |
| title_fullStr | Seismic response analysis of frame structures with uneven settlement of foundation considering soil-structure interaction |
| title_full_unstemmed | Seismic response analysis of frame structures with uneven settlement of foundation considering soil-structure interaction |
| title_short | Seismic response analysis of frame structures with uneven settlement of foundation considering soil-structure interaction |
| title_sort | seismic response analysis of frame structures with uneven settlement of foundation considering soil structure interaction |
| topic | Soil-structure interaction Uneven settlement of foundation Seismic response Torsion effects Seismic damage |
| url | http://www.sciencedirect.com/science/article/pii/S2590123023007016 |
| work_keys_str_mv | AT haodongshang seismicresponseanalysisofframestructureswithunevensettlementoffoundationconsideringsoilstructureinteraction AT chaobao seismicresponseanalysisofframestructureswithunevensettlementoffoundationconsideringsoilstructureinteraction AT huxiangwang seismicresponseanalysisofframestructureswithunevensettlementoffoundationconsideringsoilstructureinteraction AT xiaotongma seismicresponseanalysisofframestructureswithunevensettlementoffoundationconsideringsoilstructureinteraction AT jixingcao seismicresponseanalysisofframestructureswithunevensettlementoffoundationconsideringsoilstructureinteraction AT jiaoyandu seismicresponseanalysisofframestructureswithunevensettlementoffoundationconsideringsoilstructureinteraction |