RESPONSE OF PURE-FRICTION SLIDING STRUCTURES TO THREE COMPONENTS OF EARTHQUAKE EXCITATION CONSIDERING VARIATIONS IN THE COEFFICIENT OF FRICTION

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KHOSHNOUDIAN FARAMARZ; REZAEI HAGHDOUST V.

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Paper Information

Journal: Scientia Iranica Year:2009 | Volume:16 | Issue:6 (TRANSACTION A: CIVIL ENGINEERING) Page(s): 429-442

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Information Journal Paper

Title

RESPONSE OF PURE-FRICTION SLIDING STRUCTURES TO THREE COMPONENTS OF EARTHQUAKE EXCITATION CONSIDERING VARIATIONS IN THE COEFFICIENT OF FRICTION

Author(s)

KHOSHNOUDIAN FARAMARZ | REZAEI HAGHDOUST V. | Issue Writer Certificate

Keywords

FRICTIONAL BASE ISOLATED STRUCTURE

THREE-COMPONENT EARTHQUAKE

VELOCITY-PRESSURE DEPENDENT FRICTION COEFFICIENT

BI-DIRECTIONAL INTERACTION

VERTICAL COMPONENT

Abstract

In the present study, the influence of the coefficient of friction on the seismic response of sliding base isolated structures is investigated. The building is modeled as a simplified single-story structure resting on a group of sliding supports. The frictional forces mobilized at the sliding supports are assumed to have a hysteretic plasticity behavior. Bilateral interaction between the stiffness of the two horizontal orthogonal directions of the isolators has been taken into consideration. The results show that the variations of the coefficient of friction influence the response of a sliding base isolated building. Effects of vertical excitation on the normal and frictional forces are considered too. The influence of the BI-DIRECTIONAL INTERACTION of frictional forces and vertical excitation on the response is investigated by comparing the response of the system to mono-directional (excluding VERTICAL COMPONENT and no interaction between the two horizontal orthogonal directions), bi-directional (excluding VERTICAL COMPONENT) and tridirectional earthquake excitations. It is demonstrated that the response of the sliding isolated structures is influenced significantly by the BI-DIRECTIONAL INTERACTION of frictional forces and by incorporation of the VERTICAL COMPONENT. Further, the base shear response may be underestimated if the effects of the VERTICAL COMPONENT are neglected and the sliding structures are designed merely on the basis of single-component or two-component excitation.

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APA: Copy

KHOSHNOUDIAN, FARAMARZ, & REZAEI HAGHDOUST, V.. (2009). RESPONSE OF PURE-FRICTION SLIDING STRUCTURES TO THREE COMPONENTS OF EARTHQUAKE EXCITATION CONSIDERING VARIATIONS IN THE COEFFICIENT OF FRICTION. SCIENTIA IRANICA, 16(6 (TRANSACTION A: CIVIL ENGINEERING)), 429-442. SID. https://sid.ir/paper/289880/en

Vancouver: Copy

KHOSHNOUDIAN FARAMARZ, REZAEI HAGHDOUST V.. RESPONSE OF PURE-FRICTION SLIDING STRUCTURES TO THREE COMPONENTS OF EARTHQUAKE EXCITATION CONSIDERING VARIATIONS IN THE COEFFICIENT OF FRICTION. SCIENTIA IRANICA[Internet]. 2009;16(6 (TRANSACTION A: CIVIL ENGINEERING)):429-442. Available from: https://sid.ir/paper/289880/en

IEEE: Copy

FARAMARZ KHOSHNOUDIAN, and V. REZAEI HAGHDOUST, “RESPONSE OF PURE-FRICTION SLIDING STRUCTURES TO THREE COMPONENTS OF EARTHQUAKE EXCITATION CONSIDERING VARIATIONS IN THE COEFFICIENT OF FRICTION,” SCIENTIA IRANICA, vol. 16, no. 6 (TRANSACTION A: CIVIL ENGINEERING), pp. 429–442, 2009, [Online]. Available: https://sid.ir/paper/289880/en

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