The Study of the Pounding of Adjacent Buildings with Different Structural Material Considering Torsion and Soil-Structure Interaction and Determination of the Safe Distance

The Study of the Pounding of Adjacent Buildings with Different Structural Material Considering Torsion and Soil-Structure Interaction and Determination of the Safe Distance | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article The Study of the Pounding of Adjacent Buildings with Different Structural Material Considering Torsion and Soil-Structure Interaction and Determination of the Safe Distance Ehsan Boroomand, Ali Naseri, Fatemeh Nastaran Ahmadi, Majid Moradi This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7518129/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 9 You are reading this latest preprint version Abstract Iran's location in a seismic zone and the existence of numerous structures built based on outdated seismic design codes necessitate a closer examination of the building design process. Among the issues arising during earthquakes, especially in large cities, is the occurrence of structural pounding. Most studies conducted on structural pounding have been two-dimensional, with rigid supports and for homogeneous structures. However, two-dimensional modeling eliminates torsion and neglects soil-structure interaction effects, which alters the structural behavior compared to reality. Moreover, there is a significant difference between the behavior of structures made of different materials, such as steel and reinforced concrete. Therefore, it is necessary to investigate the pounding phenomenon for heterogeneous structures, considering torsion and soil-structure interaction, and to determine a safe separation distance. In this research, by three-dimensional modeling of steel and concrete structures subjected to seven scaled selected earthquake records, adjacent to each other, at heights of 5, 11, and 17 stories, situated on a flexible soil foundation at various distances, the structural pounding phenomenon and the determination of a safe separation distance were studied. The results indicate that torsion leads to an 11% increase in the maximum pounding force, and soil-structure interaction causes a 2.6% increase in this quantity. In determining the safe separation distance, the spectral difference method, considering the behavioral characteristics of the structures with the help of their period, resulted in a 38% average reduction in this distance compared to the permissible separation distance predicted in the 2800 standard. Structure Engineering Department of Civil Engineering Babol Noshirvani University of Technology Babol Iran. [email protected] Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 12 Nov, 2025 Reviews received at journal 07 Nov, 2025 Reviews received at journal 08 Oct, 2025 Reviewers agreed at journal 07 Oct, 2025 Reviewers agreed at journal 07 Oct, 2025 Reviewers invited by journal 06 Oct, 2025 Editor assigned by journal 03 Sep, 2025 Submission checks completed at journal 03 Sep, 2025 First submitted to journal 02 Sep, 2025 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-7518129","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":530785892,"identity":"9c611bcf-46b9-4a68-915e-ea78f1ba902d","order_by":0,"name":"Ehsan Boroomand","email":"","orcid":"","institution":"Babol Noshirvani University of Technology","correspondingAuthor":false,"prefix":"","firstName":"Ehsan","middleName":"","lastName":"Boroomand","suffix":""},{"id":530785893,"identity":"92e580c0-64c0-45bc-a776-87c48ef87fd3","order_by":1,"name":"Ali 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Therefore, it is necessary to investigate the pounding phenomenon for heterogeneous structures, considering torsion and soil-structure interaction, and to determine a safe separation distance. In this research, by three-dimensional modeling of steel and concrete structures subjected to seven scaled selected earthquake records, adjacent to each other, at heights of 5, 11, and 17 stories, situated on a flexible soil foundation at various distances, the structural pounding phenomenon and the determination of a safe separation distance were studied. The results indicate that torsion leads to an 11% increase in the maximum pounding force, and soil-structure interaction causes a 2.6% increase in this quantity. 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