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تالار گفتگوی ایران سازه، وبسایت تخصصی مهندسی عمران

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محاسبه سازه های صنعتی برای بارهای زلزله

Industrial Building Design on Seismic Issues
Swapnil N. Dhande1, Y. R. Suryawanshi2, Pravin S. Patil3
P. G. Student, Department of Civil Engineering, Imperial College of Engineering and Research, Wagholi , Pune, India1
Assistant Professor, Department of Civil Engineering, Imperial College of Engineering and Research, Wagholi , Pune,
India2
Assistant Professor, Department of Civil Engineering, A.I.S.S.M.S. College of Engineering, Pune, India3
ABSTRACT: The structural system of the building has to support the lateral loads due to earthquake and wind in
addition to gravity loads. A lateral load develops high stresses and produces sway causing vibration and drift. If the
buildings are not designed to resist the lateral loads, then they may be collapse resulting into the loss of life or its
content. Therefore it‟s important for the structure to have not only sufficient strength against gravity loads but also the
adequate stiffness to resist lateral forces. Literature review reveals that LLRSS (Lateral load Resisting structural
system) is provided in the form of devices like base isolation and dampers which controls the seismic vibration and
lateral drift. But these devices are very costly and effective only for high rise buildings. Hence there is a need to study
the LLRSS or technology suitable for a particular height of building. The objective of this research is to propose simple
but innovative and effective LLRSS or structural technology and methodology for the seismic control which can be
used in new as well as old building structures. It is reviewed that since North earthquake (1994), concentrically braced
steel frame has gained the popularity as a LRSS in the seismic areas. In spite of increasing popularity, analytical study
of braced frame structure and its detailed requirement to control the seismic response is limited in India. Also RC
building involves heavy dead load due to large member size which intern is more prompt for seismic loss. Hence, it is
proposed to study the response of steel buildings/frames with different types of steel bracings configurations as a
LLRSS to control the vibration and storey drift. The structural response parameters selected for the study are time
period, natural frequency, and roof displacement. The research work deals with the parametric study of response of
Non-linear time history analysis (NLTHA) of 3D industrial steel buildings braced with different bracing configurations
using software (Sap-2000) under Bhuj earthquake. The bracing configuration used are SDB, CDB, VVB and INVB in
concentric bracing to suggest suitability of particular bracing configurations for the stability of the building structure
under seismic loading.
KEYWORDS: Seismic behaviour, Linear and non linear time history analysis, Response spectra, Bracing system.
 
International Journal of Innovative Research in Science,
Engineering and Technology
(An ISO 3297: 2007 Certified Organization)
Vol. 4, Issue 5, May 2015

photo_۲۰۱۶-۰۳-۲۷_۱۸-۲۳-۲۹.jpg

 

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  • مطالب مشابه

    • توسط admin
      طراحی یک سازه صنعتی برای بار قائم، سیل، باد، زلزله و ...

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      طراحی سازه صنعتی بر اساس آیین نامه های یوروکد و روسیه

      Saimaa University of Applied Sciences Technology, Lappeenranta Degree Programme in Civil and Construction Engineering Konstantin Papkovskiy THE DESIGN OF AN INDUSTRIAL BUILDING ACCORDING TO RUSSIAN AND EUROPEAN CONSTRUCTION NORMS   فایل پی دی اف به زبان انگلیسی در 143 صفحه به نقل از کانال تلگرام فایلهای انجمن سازه های فولادی ایران دانلود از پیوست  

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      مثال طراحی یک سازه صنعتی



      STRUCTURAL STEEL DESIGN
      James R. Harris, P.E., Ph.D., Frederick R. Rutz,
      P.E., Ph.D., and Teymour Manzouri, P.E., Ph.D.
       

      This chapter illustrates how the 2000 NEHRP Recommended Provisions (hereafter the Provisions) is
      applied to the design of steel framed buildings. The three examples include:
      1. An industrial warehouse structure in Astoria, Oregon;
      2. A multistory office building in Los Angeles, California; and
      3. A low-rise hospital facility in the San Francisco Bay area of California.
      The discussion examines the following types of structural framing for resisting horizontal forces:
      1. Concentrically braced frames,
      2. Intermediate moment frames,
      3. Special moment frames,
      4. A dual system consisting of moment frames and concentrically braced frames, and
      5. Eccentrically braced frames.
       

      All structures are analyzed using three-dimensional static or dynamic methods. The SAP2000 Building
      Analysis Program (Computers & Structures, Inc., Berkeley, California, v.6.11, 1997) is used in Example
      5.1, and the RAMFRAME Analysis Program (RAM International, Carlsbad, California, v. 5.04, 1997 ) is
      used in Examples 5.2 and 5.3.
      In addition to the 2000 NEHRP Recommended Provisions, the following documents are referenced:
      AISC LRFD American Institute of Steel Construction. 1999. Load and Resistance Factor Design
      Specification for Structural Steel Buildings

      AISC Manual American Institute of Steel Construction. 2001. Manual of Steel Construction, Load
      and Resistance Factor Design, 3rd Edition.
      AISC Seismic American Institute of Steel Construction. 2000. [2002] Seismic Provisions for
      Structural Steel Buildings, 1997, including Supplement No. 2.
      IBC International Code Council, Inc. 2000. 2000 International Building Code.
      FEMA 350 SAC Joint Venture. 2000. Recommended Seismic Design Criteria for New Steel
      Moment-Frame Buildings.
      AISC SDGS-4 AISC Steel Design Guide Series 4. 1990. Extended End-Plate Moment Connections,
      1990.
      SDI Luttrell, Larry D. 1981. Steel Deck Institute Diaphragm Design Manual. Steel
      Deck Institute.


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      PREVENTING UNDESIRABLE SEISMIC BEHAVIOUR OF INFILL WALLS IN DESIGN PROCESS

      Azadeh NOORIFARD
      Ph.D. Candidate, Architect, Department of Architecture and Environmental
      Design, Iran University of Science and Technology, Tehran, Iran,
      e-mail: anoorifard@iust.ac.ir
      Fatemeh Mehdizadeh SARADJ
      Associate Professor, PhD, Department of Architecture and Environmental
      Design, Iran University of Science and Technology, Tehran, Iran,
      e-mail: mehdizadeh@iust.ac.ir
      Mohammad Reza TABESHPOUR
      Assistant Professor, PhD, Department of Mechanical Engineering, Sharif
      University of Technology, Tehran, Iran,
      e-mail: tabeshpour@sharif.edu
      Abstract. Dividing walls are usually considered as non-structural elements,
      but experiences of past earthquakes show that some buildings designed
      and constructed by engineers have been damaged during earthquakes
      because of disregarding the negative effects of walls. Apart from the poor
      quality of construction and materials, inattention in design process is the
      main reason for undesirable seismic behaviour of walls.The main aim of
      this paper is to investigate the measures taken in different stages of
      architectural and structural design for improving the seismic behaviour of
      infilled concrete structures. As a general principle, with the further
      progress of project from basic architectural design to detailed structural
      design, there is a need to reduce designer authority and increase obligation,
      furthermore the cost of project increases too. The conclusion of this study
      implies that, in order to achieve the desirable seismic behaviour of walls,
      close collaboration between architects and structural engineers is required
      from the early stages of design. The results of this study are presented in a
      check list for designing reinforced concrete (RC) moment resisting frame
      and RC shear wall.
      Key words: Walls, Seismic Behaviour, Architectural Design, Structural
      Design, Concrete Structures
       
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      Update of the Chiou and Youngs NGA Model for the Average Horizontal Component of Peak Ground Motion and Response Spectra
      Brian S.-J. Chioua) and Robert R. Youngsb)
      M.EERI
      We present an update to our 2008 NGA model for predicting horizontal
      ground motion amplitudes caused by shallow crustal earthquakes occurring in
      active tectonic environments. The update is based on analysis of the greatly
      expanded NGA-West2 ground motion database and numerical simulations.
      The updated model contains minor adjustments to our 2008 functional form
      related to style of faulting effects, hanging wall effects, scaling with the depth
      to top of rupture, scaling with sediment thickness, and the inclusion of additional
      terms for the effects of fault dip and rupture directivity. In addition, we incorporate
      regional differences in far-source distance attenuation and site effects
      between California and other active tectonic regions. Compared to our 2008
      NGA model, the predicted medians by the updated model are similar for
      M > 7 and are lower for M < 5. The aleatory variability is larger than that
      obtained in our 2008 model. [DOI: 10.1193/072813EQS219M]
       

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