A Seismic Pounding Risk-based Method for Determination of Minimum Separation Distance between Nonlinear Adjacent Buildings

Abstract The determination of the interference distance between objects is a problem encountered in the off-line simulation of robotic systems. It is similar to the problem of finding the minimum separation distance between two bodies — a problem which, at present, is commonly solved using optimization techniques. This paper presents an analogous optimization formulation for the quick and accurate determination of the interference distance between two interfering objects. The optimization problem consists of finding the maximum amount by which the boundaries of two interfering object can be moved back while still maintaining a non-empty interference volume. Since the approach used is similar to that used in the minimum separation problem, a single algorithm has been implemented which, given the position and orientation of two objects, will return the separation or interference distance between the objects, as appropriate.

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Theoretical and Experimental Study on Critical Separation Distance of Adjacent Buildings Based on Seismic Pounding Fragility

Journal of Engineering Mechanics ◽

10.1061/(asce)em.1943-7889.0001684 ◽

2019 ◽

Vol 145 (12) ◽

pp. 04019106 ◽

Cited By ~ 1

Author(s):

Qiao-Yun Wu ◽

Wan-Cheng He ◽

Min Wei ◽

Hong-Ping Zhu

Keyword(s):

Experimental Study ◽

Separation Distance ◽

Adjacent Buildings ◽

Critical Separation ◽

Seismic Pounding

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Effect of passive coupling on seismic interaction optimization of adjacent structures

Mechanics and Mechanical Engineering ◽

10.2478/mme-2021-0014 ◽

2021 ◽

Vol 25 (1) ◽

pp. 99-110

Author(s):

Khadidja Reteri ◽

Abdellatif Megnounif

Keyword(s):

Numerical Study ◽

Separation Distance ◽

Flexible Structure ◽

Seismic Events ◽

Rigid Structure ◽

The Past ◽

Adjacent Buildings ◽

Coupling System ◽

Adjacent Structures ◽

Minimum Separation

Abstract During the past few years, several studies have been conducted in various fields of civil engineering in order to design structures that can withstand the forces and deformations that might occur during seismic events. However, more recently, building adjacent structures close to each other and more resistant to earthquakes, provided with coupling systems, has been an issue of major concern. The effects of some parameters, such as the characteristics of adjacent structures and those of the coupling system, on the choice of the separation distance, were investigated using a program that was developed using MATLAB. This article aims to present a study that is intended to determine the parameters characterizing the coupling system. Moreover, the influence of rigidity of the structure was also examined. For this, three examples were investigated: a flexible structure, a rigid structure, and a very rigid structure. The results obtained from the numerical study made it possible to show that knowing the characteristics, number, and arrangements of the coupling systems can be used to find the minimum separation distance between two adjacent buildings.

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Verification of Formulas for Periods of Adjacent Buildings Used to Assess Minimum Separation Gap Preventing Structural Pounding during Earthquakes

Advances in Civil Engineering ◽

10.1155/2019/9714939 ◽

2019 ◽

Vol 2019 ◽

pp. 1-8 ◽

Cited By ~ 2

Author(s):

S. M. Khatami ◽

H. Naderpour ◽

R. C. Barros ◽

R. Jankowski

Keyword(s):

Numerical Analysis ◽

Separation Distance ◽

Seismic Gap ◽

Structural Pounding ◽

Large Separation ◽

Adjacent Buildings ◽

Linear And Nonlinear ◽

Minimum Separation ◽

New Equation

Insufficient separation distance between adjacent buildings may lead to serious damages during earthquakes due to structural pounding. The best way to prevent collisions is to provide sufficiently large separation distance between structures. In this paper, the periods of two closely spaced linear and nonlinear buildings have been investigated so as to accurately assess the minimum in-between separation gap. A new equation to calculate the effective periods of inelastic buildings has been proposed, and its effectiveness has been verified through numerical analysis. The results of the investigation conducted for inelastic buildings with different number of stories indicate that the proposed formula allows us to prevent earthquake-induced structural pounding by ensuring an adequate value of seismic gap.

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