International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 11 Issue: 07 | July 2024
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p-ISSN: 2395-0072
DYNAMIC ANALYSIS OF LATERALLY LOADED PILES IN GROUP Miss. Monika D. Khandagale1, Dr. Pradeep P. Tapkire2 1Research Scholar at N.B. Navale Sinhgad College of Engineering, Solapur, Maharashtra, India-413255 2H.O.D. Civil Dept., N.B. Navale Sinhgad College of Engineering, Solapur, Maharashtra, India-413255
---------------------------------------------------------------------***--------------------------------------------------------------------against the soil and generating compressive and shear Abstract - In this study, the construction of multi-storey stresses that resist movement.
buildings is rapidly increasing worldwide, necessitating robust foundation solutions such as pile foundations. These foundations are crucial for transferring vertical (axial) forces in structures like tall buildings, bridges, offshore platforms, defense structures, dams, and wharfs. However, piles also often bear lateral (horizontal) forces and moments. A recent study using STAAD Pro software analyzed the behavior of piles in groups subjected to dynamic loads, such as those from earthquakes. The analysis focused on responses like deflection, axial force, shear force, and bending moment. It was found that deflection initially increases with pile length and then decreases, with higher deflection observed in closely spaced piles. Axial force consistently increases with pile length, while bending moment and shear force decrease as pile length increases, with maximum values observed in closely spaced piles. This study highlights the importance of considering both vertical and horizontal forces in the design and analysis of pile foundations for multi-storey buildings.
1.1 Aim & Objective To find most suitable design combination for laterally loaded piles After exclusive study of literature review carried by various researcher, on dynamic analysis lateral pile group. 1] Analyze the various group of piles with varying spacing. 2] Analyze the consider group of piles for different soil condition 3] Identify effect of lateral load on piles and it consideration for design of piles 4] Developed variation of various geometrical parameters of pile for above mentioned.
Key Words: Dynamic Analysis, Laterally Loaded Piles,
2. Literature Review
Earthquake Loads, Axial Force, Structural Stability, MultiStorey Building Foundations.
Current literature survey focuses on the analysis of piles, which are designed to transfer moments, shear forces, and axial loads from the structure above to the soil below. Research has provided insights into the behavior of pile group’s subjected to dynamic loads, such as those caused by earthquakes. This includes examining the effects of pile spacing within a group and conducting comparative studies of axial forces, shear forces, bending moments, and stresses under various conditions. These studies aim to enhance the understanding of pile performance under seismic loads, informing better design and construction practices for pile foundations in earthquake-prone areas. Research papers and journal papers were reviewed among which some of the concern related papers are there central idea for their research are presented below.
1. INTRODUCTION A pile is a deep foundation element constructed or inserted into the ground to transfer loads from a structure to deeper, more stable soil layers. Made from materials such as concrete, timber, or steel, piles are essential for supporting structures where the surface soil lacks sufficient bearing capacity. They are commonly used for tall buildings, bridges, offshore platforms, defence structures, dams, earth-retaining structures, wharfs, and jetties. Piles carry both vertical (axial) loads and lateral (horizontal) forces and moments. They are particularly useful in conditions with heavy, unevenly distributed loads, or in areas near riverbeds where scouring and high subsoil water levels make shallow foundations impractical. Piles can be classified by their material and installation method (e.g., driven, cast-in-place) and by their function (e.g., end-bearing, friction, compaction). Laterally loaded piles behave like transversely loaded beams, using the lateral resistance of the surrounding soil to transfer loads. Designing these foundations involves managing displacement and bending moments, which depend on soil and pile properties. The design is challenging due to the unpredictable nature of subsoil profiles and varying architectural load requirements. When subjected to lateral loads, piles may bend, rotate, or translate, pressing
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Contributions of researchers are presented as follows, M. khari, danieal jahed armaghanai [1] lateral deflection on small scale piles using hybrid method. The authors has published Piles, as a type of geotechnical structures, was widely utilized to resist different lateral loads sources such as inclined loads and earthquakes. Therefore, the behavior of such structures under lateral loads needs to be investigated. Accordingly, this study examines the piles’ lateral deflection (LD) under various conditions. The proposed PSO–ANN
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