Base isolation of buildings for subway‐induced environmental vibration: Field experiments and a semi‐analytical prediction model

Sheng, Tao; Shi, Weixing; Shan, Jiazeng; Hong, Fang‐yue; Bian, Xuecheng; Liu, Ganbin; Chen, Yue

doi:10.1002/tal.1798

Cited by 19 publications

(2 citation statements)

References 24 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sheng et al investigated the effect of TRBs on the vibrations caused by metro trains through in situ experiments and semi-analytical models. [22]. Kikuchi and Aiken analyzed the hysteretic behavior of TRBs [23].…”

Section: Introductionmentioning

confidence: 99%

A Novel Three-Dimensional Composite Isolation Bearing and Its Application to the Mitigation of Earthquakes and Traffic-Induced Vibrations

Wu,

Xu,

et al. 2023

Sustainability

View full text Add to dashboard Cite

Potential damage caused by earthquakes combined with reduced comfort due to traffic has become a big challenge when designing modern buildings, and base-isolation is one of the most effective solutions to such a problem. However, most isolation bearings cannot provide sufficient mitigation for both earthquakes and traffic-induced vibrations simultaneously. To this end, this research proposes a new type of three-dimensional isolation bearing for the mitigation of both earthquake effects and traffic-induced vibrations, which is composited by a thick rubber bearing, an auto-reset flat sliding bearing, and a double concave friction pendulum bearing. In this study, the analytical hysteresis model of the proposed isolation bearing was derived and experimentally validated. In addition, the fatigue performance and vertical compression performance of the proposed isolation bearing was tested and analyzed. Finally, the mitigation effect for traffic-induced vibrations of the proposed isolation bearing was validated through a field test.

show abstract

Section: Introductionmentioning

confidence: 99%

A Novel Three-Dimensional Composite Isolation Bearing and Its Application to the Mitigation of Earthquakes and Traffic-Induced Vibrations

Wu,

Xu,

et al. 2023

Sustainability

View full text Add to dashboard Cite

show abstract

“…By reducing and stabilizing the acceleration transfer coefficient of the vibration, it showed that high-damping rubber isolation bearings could effectively reduce the subway vibration. Furthermore, the subway vibration transmitted into building structures is mainly attributed to its vertical component [5]; hence, the isolators should have the sufficient compressive bearing capacity and a small vertical stiffness [6]. A correlation of the vertical stiffness and the damping characteristics with design variables, such as surface pressure, loading frequency, and temperature, under the subway vibration was studied on four types of rubber isolation bearings [3].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Hyper-Viscoelastic Properties of High-Damping Rubber Materials during the Cyclic Tension and Compression Process in the Vertical Direction

Chen

Shao

2022

Polymers

View full text Add to dashboard Cite

With the rapid development of the economy and urbanization, the construction of the urban rail transit system has had a great impact on the work, life, and health of residents in buildings along the rail transit line. Thus, it is particularly urgent and necessary to develop base isolation technologies to control and reduce the impact of vibrations of rail transit systems on building structures. High-damping rubber isolation bearings have shown significant effectiveness in the reduction of this impact, and their isolation performance mainly depends on the mechanical and damping energy dissipation characteristics of the high-damping rubber material. This paper aims to investigate the hyper-viscoelastic properties of the high-damping rubber material used for high-damping rubber isolation bearings during the cyclic tension and compression process in the vertical direction. These properties include hyperelastic parameters, viscoelastic coefficients, and the relaxation times of the material. For this purpose, uniaxial cyclic tension and compression tests were conducted. A three-element Maxwell rheological model combining a strain energy density function was proposed for modeling the hyper-viscoelastic behaviors of the materials during the cyclic tension and compression process. Based on the obtained results, an iterative identification procedure was used to determine the constitutive parameters of the material for each loading-unloading cycle. The aforementioned parameters were further expressed as a function of the number of cycles. New insights into hyper-viscoelastic property changes in this high-damping rubber material during the cyclic tension and compression process were gained in this work. These investigations could facilitate the development of computational tools, which would regulate fundamental guidelines for the better controlling and optimization of the isolation performance of the high-damping rubber material used for high-damping rubber isolation bearings, which have a wider perspective of applications in the urban rail transit system.

show abstract

In situ tests of building structures isolated by innovative three‐dimensional vibration isolation bearings

Cao,

Pan,

et al. 2024

Earthq Engng Struct Dyn

View full text Add to dashboard Cite

An innovative three‐dimensional vibration isolation bearing (3D‐VIB) was proposed in past studies to mitigate rail‐induced vibration and improve the seismic performance of buildings. The 3D‐VIB was composed of a thick laminated rubber bearing as the vertical vibration isolation element and a friction pendulum system as the horizontal seismic isolation element. In this study, in situ tests were carried out on a subway over‐track structure with 3D‐VIBs. The in situ tests included the subway‐induced vibration excitation test and the horizontal loading test on the same structure. In the subway‐induced vibration excitation test, the vertical isolation performance of the test structure was changed by transforming the isolation layer from a normal vibration‐isolation‐state to a non‐isolation‐state. The comparison between the two states proved that the installation of 3D‐VIBs significantly changed the vertical vibration mode and reduced the subway‐induced vibration of the superstructure. The shear performances of the isolated structure were examined by the horizontal loading test, which subjected the superstructure to a large horizontal movement under external load. The shear performances of the structure with 3D‐VIBs were consistent with that of the 3D‐VIB specimens measured in the laboratory. The in situ tests confirmed the effectiveness and stability of the 3D‐VIBs when applied to practical engineering.

show abstract

Base isolation of buildings for subway‐induced environmental vibration: Field experiments and a semi‐analytical prediction model

Cited by 19 publications

References 24 publications

A Novel Three-Dimensional Composite Isolation Bearing and Its Application to the Mitigation of Earthquakes and Traffic-Induced Vibrations

A Novel Three-Dimensional Composite Isolation Bearing and Its Application to the Mitigation of Earthquakes and Traffic-Induced Vibrations

Modeling of Hyper-Viscoelastic Properties of High-Damping Rubber Materials during the Cyclic Tension and Compression Process in the Vertical Direction

In situ tests of building structures isolated by innovative three‐dimensional vibration isolation bearings

Contact Info

Product

Resources

About