Numerical Simulation Analysis of Lead Rubber Bearings (LRBs) Damage and Superstructure Response Under Near-Fault Earthquakes
Under the action of near fault earthquakes, the LRB bearings of long-period isolated buildings are prone to significant deformation and failure under compression shear conditions. Therefore, it is necessary to analyze the damage of LRB and its impact on the superstructure. Finite element analysis me...
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MDPI AG
2025-03-01
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| author | Yue Ren Ruidong Wang Wenfu He Wenguang Liu |
| author_facet | Yue Ren Ruidong Wang Wenfu He Wenguang Liu |
| author_sort | Yue Ren |
| collection | DOAJ |
| description | Under the action of near fault earthquakes, the LRB bearings of long-period isolated buildings are prone to significant deformation and failure under compression shear conditions. Therefore, it is necessary to analyze the damage of LRB and its impact on the superstructure. Finite element analysis methodology was selected and Abaqus was used to simulate hysteresis curve of LRB and the separation between rubber layer and steel layer when horizontal deformation reaches 400%. A simplified four-stiffness isolation bearing model is proposed and applied to seismic isolation damage analysis on 8-story seismic structure under near-fault earthquakes. Damage on different positions and numbers of bearings are also compared. It concludes that under the compressive and shearing state, when the horizontal deformation of the isolator exceeds 300%, the stiffness enhancement section appears. Moreover, it is found that the damage of all LRBs show the most significant scale-up effect on acceleration and story drift. |
| format | Article |
| id | doaj-art-5dff50f1cd5341a59f92e6335393455b |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-5dff50f1cd5341a59f92e6335393455b2025-08-20T02:53:19ZengMDPI AGBuildings2075-53092025-03-0115583910.3390/buildings15050839Numerical Simulation Analysis of Lead Rubber Bearings (LRBs) Damage and Superstructure Response Under Near-Fault EarthquakesYue Ren0Ruidong Wang1Wenfu He2Wenguang Liu3School of Management, Wuhan College, Wuhan 430212, ChinaShanghai Jiuxuan Engineering Technology Co., Ltd., Shanghai 200090, ChinaSchool of Mechanics and Engineering Sciences, Shanghai University, Shanghai 200444, ChinaSchool of Mechanics and Engineering Sciences, Shanghai University, Shanghai 200444, ChinaUnder the action of near fault earthquakes, the LRB bearings of long-period isolated buildings are prone to significant deformation and failure under compression shear conditions. Therefore, it is necessary to analyze the damage of LRB and its impact on the superstructure. Finite element analysis methodology was selected and Abaqus was used to simulate hysteresis curve of LRB and the separation between rubber layer and steel layer when horizontal deformation reaches 400%. A simplified four-stiffness isolation bearing model is proposed and applied to seismic isolation damage analysis on 8-story seismic structure under near-fault earthquakes. Damage on different positions and numbers of bearings are also compared. It concludes that under the compressive and shearing state, when the horizontal deformation of the isolator exceeds 300%, the stiffness enhancement section appears. Moreover, it is found that the damage of all LRBs show the most significant scale-up effect on acceleration and story drift.https://www.mdpi.com/2075-5309/15/5/839LRBdamage analysisAbaqus |
| spellingShingle | Yue Ren Ruidong Wang Wenfu He Wenguang Liu Numerical Simulation Analysis of Lead Rubber Bearings (LRBs) Damage and Superstructure Response Under Near-Fault Earthquakes Buildings LRB damage analysis Abaqus |
| title | Numerical Simulation Analysis of Lead Rubber Bearings (LRBs) Damage and Superstructure Response Under Near-Fault Earthquakes |
| title_full | Numerical Simulation Analysis of Lead Rubber Bearings (LRBs) Damage and Superstructure Response Under Near-Fault Earthquakes |
| title_fullStr | Numerical Simulation Analysis of Lead Rubber Bearings (LRBs) Damage and Superstructure Response Under Near-Fault Earthquakes |
| title_full_unstemmed | Numerical Simulation Analysis of Lead Rubber Bearings (LRBs) Damage and Superstructure Response Under Near-Fault Earthquakes |
| title_short | Numerical Simulation Analysis of Lead Rubber Bearings (LRBs) Damage and Superstructure Response Under Near-Fault Earthquakes |
| title_sort | numerical simulation analysis of lead rubber bearings lrbs damage and superstructure response under near fault earthquakes |
| topic | LRB damage analysis Abaqus |
| url | https://www.mdpi.com/2075-5309/15/5/839 |
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