Development of new rectangular rubber isolators for a tunnel-form structure subjected to seismic excitations

Altalabani, Diyar; Hejazi, Farzad; Rashid, Raizal Saifulnaz Muhammad; Aziz, Farah Nora Aznieta Abdul

doi:10.1016/j.istruc.2021.03.106

Cited by 19 publications

(11 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are many other innovations for enhancing the performance of base isolators. Diyar et al [29] studied the effect of increasing the number of the lead cores, and the effect of changing the shape of the base isolators; instead of circular, rectangular shapes were studied numerically. The results showed that the differences between the two directions (length vs. width of the isolator) were not that important; however, the number of lead cores played a significant role in increasing damping value [29].…”

Section: Behavior Of Mps In Association With Seismic Dampersmentioning

confidence: 99%

“…Diyar et al [29] studied the effect of increasing the number of the lead cores, and the effect of changing the shape of the base isolators; instead of circular, rectangular shapes were studied numerically. The results showed that the differences between the two directions (length vs. width of the isolator) were not that important; however, the number of lead cores played a significant role in increasing damping value [29]. Thus, increasing the damping value by using a method different than interfering to the base isolator structure, as using MPs, might be an interesting idea.…”

Section: Behavior Of Mps In Association With Seismic Dampersmentioning

confidence: 99%

See 1 more Smart Citation

Seismic Behavior of Micropiles and Micropiled Structures Used for Increasing Resilience: A Literature Review

Alhaija

Batali

2022

Applied Sciences

View full text Add to dashboard Cite

The aim of this paper is to present the relevant information and development available in the scientific literature regarding the seismic behavior of micropiles (MPs) and micropiled structures (MPed). The seismic behavior of MPs is not very well studied, but MPs are used in retrofitting of old buildings and for new resilient buildings, and in terms of seismic behavior they have a high potential. Additionally, their association with seismic dampers for improving the seismic behavior of buildings is not yet fully studied and it represents a major topic of interest for both new structures and historical monuments. After the introductory part, the paper describes all relevant information regarding MPs, as types and technology, seismic behavior, applications for increasing seismic resilience, and experimental and numerical modeling.

show abstract

Section: Behavior Of Mps In Association With Seismic Dampersmentioning

confidence: 99%

Section: Behavior Of Mps In Association With Seismic Dampersmentioning

confidence: 99%

Seismic Behavior of Micropiles and Micropiled Structures Used for Increasing Resilience: A Literature Review

Alhaija

Batali

2022

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…On this basis, the remote control function can be provided by programming the control program. At present, automatic robot welding has made significant progress [42][43][44][45]. By using the robotic automatic welding, a factory line can be controlled remotely.…”

Section: Implementation Steps Of Intelligent Production Linementioning

confidence: 99%

Application of Intelligent Technology on Tunnel Steel Structure Factory

2022

Mathematical Problems in Engineering

View full text Add to dashboard Cite

At present, the construction of tunnel steel structure factories has been common, but most of them are still on the low end. In addition, the manual processing modes face certain problems, such as high waste rate, low efficiency, and discrete welding of steel components. To address these problems, this paper introduces an intelligent management cloud platform, aiming to realize unmanned control methods and construct an intelligent tunnel steel component processing plant. There are four main production lines in the intelligent steel structure factory. First, an intelligent production line of a tunnel grille arch effectively improves the production efficiency, production quality, and dust removal effect of the grille arch through the automatic welding technology of a reinforcement mechanism-based welding robot. Second, a processing line of a steel pipe for tunnel construction improves the overall processing efficiency, saves costs, and reduces work intensity by using an intelligent numerical control system, a pneumatic clamping device, a plasma cutting hole assembly, and a 360-degree automatic rotation system. Third, an automatic feeding platform of section steel arch production line adopts the six-axis robot sensor clamping connecting plate positioning and six-axis robot sensing three-plane automatic welding system, which not only compensates for the defects of manual production but also realizes the reduction, increases efficiency, and improves welding quality and precision. Fourth, an automatic steel mesh production line saves much labor and enhances site management and production efficiency through vertical and horizontal reinforcement pay-off racks. Overall, in this study, the construction goals of informatization, intellectualization, and personnel downsizing of the tunnel steel structure processing have been achieved.

show abstract

“…The outcomes showed that the proposed seismic isolators minimized both vertical and horizontal accelerations by almost 55 and 25%, respectively. Moreover, [17] developed new rectangular isolators with various square rubber and lead cores subjected to earthquake excitations. The rubber cores have been wrapped with CFRP/steel to improve the viscous damping capacity of the developed isolators.…”

Section: Introductionmentioning

confidence: 99%

Development of Rectangular Vibration Isolators with Double Core Systems for Structures

Altalabani

Hejazi²

2023

Int J Civ Eng

Self Cite

View full text Add to dashboard Cite

One of the best techniques for isolating structures from the ground is the seismic isolation technique. Nowadays, square and circular base isolators are the most frequently employed shapes. Nevertheless, these configurations are not applicable for the wall-like structures; since the applied loads are not distributed in a way that provides a uniform support condition along the shear walls. To address this issue, attempts were made to develop novel rectangular isolators with lead/rubber cores. A total of five large-scale rectangular isolators were experimentally tested and subsequently subjected to finite element analysis. A rectangular seismic isolator having double lead cores was proposed to improve its effectiveness. Exposure to lead-containing materials has been shown to have poisonous effects on both the human health and environment. To avoid this, an isolator having double rubber cores was developed. Moreover, the rubber cores are wrapped with one layer of CFRP sheet and stainless steel tube to enhance the damping ratio of the rectangular isolators. Thereafter, the novel isolators were implemented in a 10-storey tunnel-form building using nonlinear dynamic analyses. The seismic performance of the buildings was then studied by conducting Incremental Dynamic Analyses. The experimental outcomes demonstrated that confining the rubber cores by stainless steel tube and CFRP sheet increased the energy absorption along the length of the isolators by 15 and 7%, respectively. Moreover, the damping ratios of the rectangular isolator with double lead cores have also increased by 36 and 47% along its length and width, respectively.

show abstract

Development of new rectangular rubber isolators for a tunnel-form structure subjected to seismic excitations

Cited by 19 publications

References 50 publications

Seismic Behavior of Micropiles and Micropiled Structures Used for Increasing Resilience: A Literature Review

Seismic Behavior of Micropiles and Micropiled Structures Used for Increasing Resilience: A Literature Review

Application of Intelligent Technology on Tunnel Steel Structure Factory

Development of Rectangular Vibration Isolators with Double Core Systems for Structures

Contact Info

Product

Resources

About