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Keywords: rehabilitation, strengthening, foundation, steel structure, rehabilitation of foundations, strengthening of foundations.

Summary

As a result of inadequate development, a number of existing structures and structures under construction require additional strengthening due to inefficiencies in design and construction, as well as changes in building codes [1,2]. As the most fundamental element of any structure, the foundation must be controlled and rehabilitated to avoid any instability caused by such problems. If the stress in soil exceeds the load bearing capacity of the foundation as a result of the loading system, it can ultimately lead to soil failure and foundation instability of the structure. Another leading cause of instability is the significant settlement of soil under foundation loadings. High shear stress in foundation and low bending capacity are other sources of instability. Also uplift may occur due to structural system and loading conditions, especially under wind or earthquake cases. In this condition uplift restriction of foundation is necessary to maintain the stability of the structure.

In this paper, a number of innovative foundation retrofitting methods are introduced and analyzed. These methods incorporate two primary approaches: removal or reduction of elements compromising foundation safety, and secondly by strengthening structural elements to overcome foundation weakness. These methods were used in a research project [3] for the rehabilitation of a complicated steel structure. The proposed methods are highly effective while providing a cost-efficient solution with minimal construction requirements. Structural analysis and design were achieved using the SAP [4] software and FOUND [5] and SAFE [6] software for foundation analysis and design.

References

1: FEMA-356, "Pre-standard and Commentary for Rehabilitation of Building", Washington DC, Federal Emergency Management Agency, 2000.
2: "Manual of Seismic Rehabilitation of Existing Buildings", International Institute of Earthquake Engineering and Seismology, Iran, 2009.
3: M. Foroughi, "Study of retrofitting procedures of art and cultural center of Yazd University", University of Yazd, Iran, 2010.
4: SAP2000 advanced 12.0.0, "Structural analysis program", Computers and structure, Inc., 2008.
5: FOUND, "Analysis and Design of Square and Rectangular Footing", S.J. Tabatabeee, M.A. Niakooee, 1995. (an Iranian software)
6: SAFE Plus W/Detailer Version 8.1.1, "Slab Analysis by the Finite Element Method", Computers and Structures, Inc., 1995.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 96 PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: B.H.V. Topping and Y. Tsompanakis Paper 199 Introducing New Methods for Retrofitting of Foundations M. Foroughi¹ and M.A. Barkhordari² ¹Civil Engineering Department, Islamic Azad University, Yazd, Iran ²Civil Engineering Department, Iran University of Science and Technology, Narmak, Tehran, Iran doi:10.4203/ccp.96.199 purchase the full-text of this paper Full Bibliographic Reference for this paper M. Foroughi, M.A. Barkhordari, "Introducing New Methods for Retrofitting of Foundations", in B.H.V. Topping, Y. Tsompanakis, (Editors), "Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 199, 2011. doi:10.4203/ccp.96.199 Keywords: rehabilitation, strengthening, foundation, steel structure, rehabilitation of foundations, strengthening of foundations. Summary As a result of inadequate development, a number of existing structures and structures under construction require additional strengthening due to inefficiencies in design and construction, as well as changes in building codes [1,2]. As the most fundamental element of any structure, the foundation must be controlled and rehabilitated to avoid any instability caused by such problems. If the stress in soil exceeds the load bearing capacity of the foundation as a result of the loading system, it can ultimately lead to soil failure and foundation instability of the structure. Another leading cause of instability is the significant settlement of soil under foundation loadings. High shear stress in foundation and low bending capacity are other sources of instability. Also uplift may occur due to structural system and loading conditions, especially under wind or earthquake cases. In this condition uplift restriction of foundation is necessary to maintain the stability of the structure. In this paper, a number of innovative foundation retrofitting methods are introduced and analyzed. These methods incorporate two primary approaches: removal or reduction of elements compromising foundation safety, and secondly by strengthening structural elements to overcome foundation weakness. These methods were used in a research project [3] for the rehabilitation of a complicated steel structure. The proposed methods are highly effective while providing a cost-efficient solution with minimal construction requirements. Structural analysis and design were achieved using the SAP [4] software and FOUND [5] and SAFE [6] software for foundation analysis and design. References 1 FEMA-356, "Pre-standard and Commentary for Rehabilitation of Building", Washington DC, Federal Emergency Management Agency, 2000. 2 "Manual of Seismic Rehabilitation of Existing Buildings", International Institute of Earthquake Engineering and Seismology, Iran, 2009. 3 M. Foroughi, "Study of retrofitting procedures of art and cultural center of Yazd University", University of Yazd, Iran, 2010. 4 SAP2000 advanced 12.0.0, "Structural analysis program", Computers and structure, Inc., 2008. 5 FOUND, "Analysis and Design of Square and Rectangular Footing", S.J. Tabatabeee, M.A. Niakooee, 1995. (an Iranian software) 6 SAFE Plus W/Detailer Version 8.1.1, "Slab Analysis by the Finite Element Method", Computers and Structures, Inc., 1995. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £130 +P&P)
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