Potential Design of Seismic Vulnerable Buildings Incorporating Lead Rubber Bearing
The seismic hazard of vulnerable regions warrants the investigation of new technologies, such as base level isolation by lead rubber bearing (LRB) devices, that can help to mitigate structural damage on seismic prone buildings. The behavior adopting such technologies can be dynamically observed in s...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-02-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/9/2/37 |
| _version_ | 1818127510347448320 |
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| author | Walid A. Al-Kutti A. B. M. Saiful Islam |
| author_facet | Walid A. Al-Kutti A. B. M. Saiful Islam |
| author_sort | Walid A. Al-Kutti |
| collection | DOAJ |
| description | The seismic hazard of vulnerable regions warrants the investigation of new technologies, such as base level isolation by lead rubber bearing (LRB) devices, that can help to mitigate structural damage on seismic prone buildings. The behavior adopting such technologies can be dynamically observed in simulated environments and thus serves as a valuable metric for their feasibility. LRB base isolators were incorporated into the design of 16 model buildings to better understand how they affected a building’s seismic response while also providing information on the structural parameters. A total of 12 different types of bearing systems were tested in base isolated (BI) buildings against conventional fixed-base (FB) isolated buildings. The system of each model high-rise building was represented by the finite element package. Static as well as dynamic analysis were conducted using response spectrum analysis (RSA) based on the seismic excitation to determine the influence of the model type in the aseismic design and the alteration in superstructure behavior. The study reveals that the LRB isolators can potentially diminish respective story accelerations, story inertia, and base shear. Use of LRB isolators in BI buildings resulted in a 10⁻20% reduction in base shear compared to FB buildings. A notable lateral shift of superstructure is offered by LRB-induced flexibility. The reduction of story acceleration for response spectrum varies 30% on lower stories up to 70% on upper stories. The LRB systems with higher characteristic strength and relatively less isolation periods shows better productivity to minimize displacements in the bearing face for dropping structural shift. However, the LRB with comparatively lower characteristic strength and high isolation periods shows the most efficiency in controlling base shear, offering least story accelerations and consenting lower story inertia forces. |
| first_indexed | 2024-12-11T07:18:30Z |
| format | Article |
| id | doaj.art-eab011d81ef5451ca33239b0ad0ab040 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-12-11T07:18:30Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-eab011d81ef5451ca33239b0ad0ab0402022-12-22T01:16:09ZengMDPI AGBuildings2075-53092019-02-01923710.3390/buildings9020037buildings9020037Potential Design of Seismic Vulnerable Buildings Incorporating Lead Rubber BearingWalid A. Al-Kutti0A. B. M. Saiful Islam1Department of Civil & Construction Engineering, College of Engineering, Imam Abdulrahman Bin Faisal University, Dammam 31451, Saudi ArabiaDepartment of Civil & Construction Engineering, College of Engineering, Imam Abdulrahman Bin Faisal University, Dammam 31451, Saudi ArabiaThe seismic hazard of vulnerable regions warrants the investigation of new technologies, such as base level isolation by lead rubber bearing (LRB) devices, that can help to mitigate structural damage on seismic prone buildings. The behavior adopting such technologies can be dynamically observed in simulated environments and thus serves as a valuable metric for their feasibility. LRB base isolators were incorporated into the design of 16 model buildings to better understand how they affected a building’s seismic response while also providing information on the structural parameters. A total of 12 different types of bearing systems were tested in base isolated (BI) buildings against conventional fixed-base (FB) isolated buildings. The system of each model high-rise building was represented by the finite element package. Static as well as dynamic analysis were conducted using response spectrum analysis (RSA) based on the seismic excitation to determine the influence of the model type in the aseismic design and the alteration in superstructure behavior. The study reveals that the LRB isolators can potentially diminish respective story accelerations, story inertia, and base shear. Use of LRB isolators in BI buildings resulted in a 10⁻20% reduction in base shear compared to FB buildings. A notable lateral shift of superstructure is offered by LRB-induced flexibility. The reduction of story acceleration for response spectrum varies 30% on lower stories up to 70% on upper stories. The LRB systems with higher characteristic strength and relatively less isolation periods shows better productivity to minimize displacements in the bearing face for dropping structural shift. However, the LRB with comparatively lower characteristic strength and high isolation periods shows the most efficiency in controlling base shear, offering least story accelerations and consenting lower story inertia forces.https://www.mdpi.com/2075-5309/9/2/37potential designdynamic behaviorbase isolationfinite element analysislead rubber bearingmultistory buildingseismic excitation |
| spellingShingle | Walid A. Al-Kutti A. B. M. Saiful Islam Potential Design of Seismic Vulnerable Buildings Incorporating Lead Rubber Bearing Buildings potential design dynamic behavior base isolation finite element analysis lead rubber bearing multistory building seismic excitation |
| title | Potential Design of Seismic Vulnerable Buildings Incorporating Lead Rubber Bearing |
| title_full | Potential Design of Seismic Vulnerable Buildings Incorporating Lead Rubber Bearing |
| title_fullStr | Potential Design of Seismic Vulnerable Buildings Incorporating Lead Rubber Bearing |
| title_full_unstemmed | Potential Design of Seismic Vulnerable Buildings Incorporating Lead Rubber Bearing |
| title_short | Potential Design of Seismic Vulnerable Buildings Incorporating Lead Rubber Bearing |
| title_sort | potential design of seismic vulnerable buildings incorporating lead rubber bearing |
| topic | potential design dynamic behavior base isolation finite element analysis lead rubber bearing multistory building seismic excitation |
| url | https://www.mdpi.com/2075-5309/9/2/37 |
| work_keys_str_mv | AT walidaalkutti potentialdesignofseismicvulnerablebuildingsincorporatingleadrubberbearing AT abmsaifulislam potentialdesignofseismicvulnerablebuildingsincorporatingleadrubberbearing |