List of Articles Lateral load

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  1 - Dynamic and Quasi-Static Plastic Behavior of Single and Nested Thin-Walled Square Tubes Under Lateral Loading
  B Shabani S Gohari Rad A Alijani R Rajabiehfard
  10.22034/jsm.2022.1947318.1721
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  2 - The optimum configuration of FRP laminates of coupling shear wall concerning the load capacity
  Hamoon Abroon Shahrbijary Ali Delnavaz
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  3 - Laboratory Investigation of the Pile Group Behavior in Sandy Soils under Lateral Loads
  Amir vakili Mohammad Ali Zomorrodian Mohammad Hosein Ahmadi
  Structures are often subjected to lateral loads due to earthquakes, winds, and waves of water. It is very necessary to predict and measure the "load-deflection" behavior of the pile group, as well as its strain behavior, in order to create a safe and economical design. More

  Structures are often subjected to lateral loads due to earthquakes, winds, and waves of water. It is very necessary to predict and measure the "load-deflection" behavior of the pile group, as well as its strain behavior, in order to create a safe and economical design. The behavior of piles embedded in soil, placed under the lateral load, is typically modeled and analyzed using the Winkler nonlinear springs method. In this method, the soil-pile interaction is modeled by nonlinear curves of P-Y in a way that P-Y curve modifies and adjust the single pile using a p-multiplier ( ) for each row of piles in the group. The  factor depends upon the configuration of pile group and the pile spacing. The value of this factor for the leading rows are considered higher and for the trailing rows lower. The present study was conducted to investigate the effects of various parameters, such as the pile spacing in the group and different layouts on the  factor. The  factor obtained from this study has good compatibility with the results of the full-scale test on pile group. The results show that the value of the  factor for pile groups with different layouts of 2.5-diameter pile spacing was in the range of 0.42 to 0.54, which is very close to the value of  obtained by previous study.Structures are often subjected to lateral loads due to earthquakes, winds, and waves of water. It is very necessary to predict and measure the "load-deflection" behavior of the pile group, as well as its strain behavior, in order to create a safe and economical design. The behavior of piles embedded in soil, placed under the lateral load, is typically modeled and analyzed using the Winkler nonlinear springs method. In this method, the soil-pile interaction is modeled by nonlinear curves of P-Y in a way that P-Y curve modifies and adjust the single pile using a p-multiplier ( ) for each row of piles in the group. The  factor depends upon the configuration of pile group and the pile spacing. The value of this factor for the leading rows are considered higher and for the trailing rows lower. The present study was conducted to investigate the effects of various parameters, such as the pile spacing in the group and different layouts on the  factor. The  factor obtained from this study has good compatibility with the results of the full-scale test on pile group. The results show that the value of the  factor for pile groups with different layouts of 2.5-diameter pile spacing was in the range of 0.42 to 0.54, which is very close to the value of  obtained by previous study. Manuscript profile
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  4 - Study on Behavior of Infilled Composite Steel Frame under Lateral Loading
  Hasan PoorMohammad seyedali tabatabayi
  Abstract In previous earthquakes, the effect of infill in the structures has shown the importance of modeling and evaluating their influences in analyzing and designing the structures. Different modeling methods have been presented up to now in this field. In this rese More

  Abstract In previous earthquakes, the effect of infill in the structures has shown the importance of modeling and evaluating their influences in analyzing and designing the structures. Different modeling methods have been presented up to now in this field. In this research, the effect of infill with various number of stories is investigated by pushover method. The results of this research reveal that the expected behavior of the structures with and without infill differs significantly. Also with increasing the number of stories, values of initial stiffness, periods, shear values and drift in buildings with infill vary basically in comparison with building without infill. Manuscript profile
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  5 - Numerical Study of a Reinforced Concrete Frame with Low Yield Point Infill Plates
  aman hassanzade rahimabadi yahya nasiraa ali ghamari
  10.30495/civil.2022.690629
  The first steel shear walls were mainly utilized in retrofitted form, but steel shear walls are now known to offer reliable performance without stiffeners. With low thickness and yield strength, the plate would buckle under small loads, transitioning from an in-plane sh More

  The first steel shear walls were mainly utilized in retrofitted form, but steel shear walls are now known to offer reliable performance without stiffeners. With low thickness and yield strength, the plate would buckle under small loads, transitioning from an in-plane shear mechanism to the diagonal tension field. Using ABAQUS, the present study takes a numerical approach and investigates a three-story, single span Reinforced Concrete Frame (RCF) with Low Yield Point (LYP) steel infill plates. A total of 45 models were studied. The yield stress of the shear wall, shear wall thickness, and the span-to-height ratio of the RCF were evaluated for the RCF, and the numerical models were compared in terms of secant stiffness, yield load, maximum load, yield displacement, and dissipated energy. Changing the span-to-height ratio and the thickness and yield strength of the LYP steel plate, increased the secant stiffness by, respectively, 49.39, 45.59, and 59.67%, the ultimate strength by 27.64, 30.88, and 40.73%, and energy dissipation by 32.35, 34.19, and 44.9%. The failure modes in the numerical models of RCFs with LYP steel plate shear walls resulted from local buckling and wrinkling of the steel infill plate. The yield strength of the LYP steel plate was found to control the stiffness, flexural strength, and energy dissipation in the RCF with a steel plate shear wall. Moreover, longitudinal cracks were created in the concrete in columns and beams due to the transfer of momentum by the tension field of the steel infill plates. Manuscript profile
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  6 - Stiffness Reduction Factor of Flat; Beam-Column and Waffle Slabs under Lateral Load
  Sayed Behzad Talaeitaba behrang Nazari
  10.1007/ijase.2023.1973609.1064
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  7 - بررسی کمانش و ارتعاشات تیر ویسکوالاستیک تحت بارهای عرضی گسترده و محوری
  حمید رضا ایپک چی حمیده صدیقی
  در این مقاله به بررسی  پاسخ دینامیکی تیر ویسکوالاستیک و بار کمانش آن تحت بارهای عرضی و محوری به کمک مدل‌های کلوین و استاندارد خطی پرداخته شده است. معادلات حاکم بر اساس دو تئوری اویلر- برنولی و تیموشنکو استخراج شده و حل تحلیلی آنها به کمک بسط توابع ویژه به‌دست آمده More

  در این مقاله به بررسی  پاسخ دینامیکی تیر ویسکوالاستیک و بار کمانش آن تحت بارهای عرضی و محوری به کمک مدل‌های کلوین و استاندارد خطی پرداخته شده است. معادلات حاکم بر اساس دو تئوری اویلر- برنولی و تیموشنکو استخراج شده و حل تحلیلی آنها به کمک بسط توابع ویژه به‌دست آمده است. بار کمانش و پاسخ براساس تئوریهای اویلر - برنولی و تیموشنکو و مدل‌های کلوین و استاندارد خطی محاسبه و با نتایج حالت الاستیک مقایسه شده است. نتایج نشان می‌دهد مدل سازی تیر ویسکوالاستیک با تیر الاستیک در استهلاک‌های متوسط، تقریب ضعیفی است. همچنین، پارامتر استهلاک به‌صورت صریح در تعیین بار کمانش ظاهر نمی‌شود ولی بار کمانش تیر ویسکو الاستیک، 50% بیش از تیر الاستیک است.  Manuscript profile