scholarly journals A Review on Finned Pile Foundation

2021 ◽  
Author(s):  
S Chandni ◽  
Rekha Ambi
Keyword(s):  
Pile Foundation ◽  
Clayey Soil ◽  
Offshore Structures ◽  
Lateral Loads ◽  
Environmental Loads ◽  
Lateral Capacity ◽  
High Rise ◽  
Power Stations ◽  
Lateral Resistance ◽  
Earth Retaining Structures

Foundation is that part of the structure which supports and transfers the loads from the structure to the soil. Pile foundations are subjected to both axial and lateral loads especially in quay walls, harbour structures, offshore structures, earth-retaining structures, bridges, power stations, lock structures, tall chimneys, and high-rise buildings. Foundations for offshore structures are subjected to environmental loads from waves, currents and wind giving rise to lateral loads that could be up to one third of the vertical loads. In order to enhance the lateral capacity of pile of such structures finned pile can be used. Experimental and numerical analysis of finned pile in sandy and clayey soil is studied by various researches and they concluded that the lateral capacity can be improved compared to that of regular piles. This paper discusses the various parameters of finned pile that influence the lateral capacity of pile foundation. The various parameters discussed are position, number, inclination, shape and dimensions of fin. From the literatures it was found that rectangular fins show better lateral resistance than triangular fins and also as the length and width of the fin increases the lateral capacity of pile also increases in both sandy and clayey soil under lateral loads.

Experimental and theoretical studies of laterally loaded finned piles in sand

2014 ◽  
Vol 51 (4) ◽  
pp. 381-393 ◽  
Author(s):  
Ahmed M.A. Nasr
Keyword(s):  
Pile Foundation ◽  
Numerical Study ◽  
Scale Model ◽  
Laboratory Model ◽  
Small Scale ◽  
Lateral Loads ◽  
Pile Head ◽  
Element Analysis ◽  
Fin Efficiency ◽  
Lateral Resistance

Large lateral loads may act on pile foundation supporting structures, such as bridge abutments, retaining walls, and structures subjected to wind–earthquake loads. A pile with fins is a newly developed type of pile foundation that is capable of supporting large lateral loads. In the present study an attempt is made to evaluate the improvement in lateral capacity of a pile with fins mounted close to the pile head. Small-scale model tests and a numerical study using finite element analysis were performed on regular piles without (fins) and piles with fins. These piles were installed in sand of different relative densities (Dr = 35% and 78%). The investigations were carried out by varying the length, width, and shape of the fins, and type of pile. Results reveal that there is a significant increase in lateral resistance of the piles after mounting the fins close to the pile head. The increase in lateral resistance gained by placing fins on a pile varies with geometries of the pile and fins. The lateral resistance increases with the increase in length of the fins until the fin’s length is equal to 0.4 of the pile length. Based on the results of the laboratory model and numerical analysis, critical values of fin parameters for maximum improvement are suggested. The agreement between observed and computed results is found to be reasonably good in terms of ultimate lateral load and fin efficiency. A comparison between the model results and the prototype-scale results is also studied.

scholarly journals Experimental and Finite Element Research of Laterally Loaded Pile

2019 ◽  
Vol 8 (6S4) ◽  
pp. 858-863
Keyword(s):  
Transmission Lines ◽  
Tall Buildings ◽  
Offshore Structures ◽  
Lateral Loads ◽  
Engineering Structures ◽  
High Rise ◽  
Lateral Forces ◽  
Bridge Structures ◽  
Port Structures ◽  
Laterally Loaded

Piles have been widely used for supporting axial and lateral loads for a variety of civil engineering structures such as high rise buildings, transmission lines, bridge piers and port structures. In many cases, lateral loads govern the design of piles. Piles are commonly used to support bridge structures, tall buildings, transmission line towers etc. where poor subsoil conditions are encountered. To suit the various types of structures and their loading conditions, piles of different types, shapes and sizes are being used in practice, the safety of these structures mainly depends on the ability of supporting piles to resist large amount of lateral forces. These lateral forces may be due to the action of wind in case of onshore structures and due to combination of wind and wave action in case of offshore structures. In case of coastal structures, there are additional berthing forces.

Behavior of Passive Pile Foundation in Clayey Soil contaminated with Fuel Oil

2018 ◽  
Vol 23 (1) ◽  
pp. 110-119 ◽  
Author(s):  
Mahdi O. Karkush ◽  
Zainab A. Kareem
Keyword(s):  
Pile Foundation ◽  
Clayey Soil ◽  
Fuel Oil ◽  
Passive Pile

scholarly journals Lateral Response of a Single Pile under Combined Axial and Lateral Cyclic Loading in Sandy Soil

2018 ◽  
Vol 4 (9) ◽  
pp. 1996 ◽  
Author(s):  
Muqdad Abdallah Kahribt ◽  
Jasim M. Abbas
Keyword(s):  
Lateral Displacement ◽  
Slenderness Ratio ◽  
Offshore Structures ◽  
Lateral Loading ◽  
Loading Conditions ◽  
Lateral Loads ◽  
Dense Sand ◽  
Lateral Response ◽  
Loading System ◽  
Vertical Displacements

According to practical situation, there have been limited investigations on the response of piles subjected to combined loadings especially when subjected to cyclic lateral loads. Those few studies led to contradictory results with regard to the effects of vertical loads on the lateral response of piles. Therefore, a series of experimental investigation into piles in dense sand subjected to combination of static vertical and cyclic lateral loading were conducted with instrumented model piles. The effect of the slenderness ratio (L/D) was also considered in this study (i.e. L/D= 25 and 40). In addition, a variety of two-way cyclic lateral loading conditions were applied to model piles using a mechanical loading system. One hundred cycles were used in each test to represent environmental loading such as offshore structures. It was found that under combined vertical and cyclic lateral loads the lateral displacement of piles decreased with an increase in vertical load whereas it causes large vertical displacements at all slenderness ratios. In addition, for all loading conditions the lateral, vertical (settlement and upward) displacements and bending moments increased as either the magnitude of cyclic load or the number of cycles increases. 

scholarly journals Evaluation of Steel Plate Shear Wall Performance with Different Sections and Arrangements of Stiffeners and its Effect on Project Management during Construction and Improvement of the Building

2021 ◽  
Vol 11 (1) ◽  
pp. 6043-6063
Author(s):  
Ali Jafarian ◽  
Seyed Babak Jafarian
Keyword(s):  
Steel Plate ◽  
Nonlinear Dynamic Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Economic Benefits ◽  
Lateral Loads ◽  
Steel Plate Shear Wall ◽  
High Rise ◽  
Earthquake Force ◽  
The Future

Considering the increase in the current construction process and the future needs of Iran, the necessity to use high-rise buildings for reduction in urbanization costs and optimal use of land will be inevitable in the future. The performance of steel plate shear wall system as a modern global system, which has an effective application in high-rise buildings and also brings economic benefits compared to previous systems, is evaluated in this study. Steel Plate Shear Walls (SPSW) are a new type of system resistant to wind and earthquake lateral loads, which dates back to the 1970s. In this research, eight samples of shear wall with various stiffening arrangements and sections with ST37 and ST52 alloys are modeled. To evaluate the nonlinear dynamic analysis, the samples are subjected to the San Fernando earthquake force and are modeled and analyzed by ABAQUS software based on the finite element theory. The results of analyzing the samples indicate better performance of the system with stiffener in both vertical and horizontal directions. Also, the use of sections with ST52 alloy has improved the performance of the shear wall by approximately 40%.

scholarly journals Influence of Shear Wall on Seismic Response of a Structure

2021 ◽  
Vol 9 (9) ◽  
pp. 1054-1060
Author(s):  
Siddhesh Bisane
Keyword(s):  
Structural Analysis ◽  
Shear Walls ◽  
Shear Wall ◽  
Main Concern ◽  
Structural Members ◽  
Lateral Loads ◽  
Comprehensive Understanding ◽  
High Rise ◽  
Story Drift ◽  
Wall Following

Abstract: Structural analysis is the science of determining the effects of different loads on structures. Structural stability and stiffness are a main concern in any high-rise structures. Shear walls are structural members that are mainly responsible for resisting lateral loads predominant on structures. They are mainly responsible to increase the stiffness, reduce story drift and displacement. In order to have a comprehensive understanding about the contribution of shear wall, following research is carried out. This research involves comparing two G+16 structures; one without a shear wall and one with it. The structure has 4 bays of 3m each along X direction and Z direction. In this, we will see how shear wall resists lateral sway and reduces story drift and increases stiffness. As the height increases, the shear wall absorbs more lateral load than the frame. The software to be used for analysis is STAADPro. Keywords: STAADPro, Stiffness, storey displacement, storey drift.

Analysis and Design of Offshore Pile Foundation

2014 ◽  
Vol 891-892 ◽  
pp. 17-23 ◽  
Author(s):  
Sudip Basack
Keyword(s):  
Pile Foundation ◽  
Complex Loading ◽  
Offshore Structures ◽  
Laboratory Model ◽  
Element Analysis ◽  
Analysis And Design ◽  
Theoretical Investigations ◽  
Experimental Laboratory ◽  
Combined Action ◽  
Ocean Environment

The ocean environment necessitates the pile foundation supporting the offshore structures to be designed against cyclic load, moments and torques initiated by a combined action of waves, wind, tides, currents, etc. Such a complex loading condition induces progressive degradation in the pile-soil interactive performance introducing significant reduction in bearing capacity with increased settlement and displacements. The Author has carried out extensive experimental (laboratory model tests) and theoretical investigations (boundary element analysis) to study the salient features of this degradation and developed a design methodology for offshore pile foundation. The works conducted and the major conclusions drawn are highlighted in this paper.

scholarly journals Analisis Pondasi Tiang Pancang Berdasarkan Hasil Perhitungan dan Loadding Test

2020 ◽  
Vol 2 (2) ◽  
pp. 48
Author(s):  
Nusa Setiani Triastuti ◽  
Indriasari Indriasari
Keyword(s):  
Carrying Capacity ◽  
Pile Foundation ◽  
Secondary Data ◽  
Linear Structure ◽  
Primary Data ◽  
Loading Test ◽  
High Rise ◽  
Pile Cap ◽  
Calculation Results ◽  
Loading Tests

<p><em>Pile foundation is one of the solutions of high-rise buildings not in the area of restrict area. When the pile foundation reached until the hard ground reaches, a small settlement is expected and  different  setlement  are  not occur. The objective: analyze the results of loading tests compared carryng capacity calculations, pile cap thick required secure.</em></p><p><em>The research method used in this research is the case study of pile foundation  twelve floors building in Batam island. The reaction on the pile is analyzed using software program of non-linear structure version 9.5 which is supported by primary data, namely loading test and secondary data of soil investigation and the largest column force taken on the pole 1.618,854 ton, Mx -7,936 ton meter, My -75,531 ton meter.</em></p><p><em>Carrying capacity analysis is based on friction and end bearing and calculated pole efficiency. The axial load of the plan is supported by 16 (sixteen) piles, based on the loading test (P) the ultimate pile foundation reaches 200% (two hundred percent) in the amount of 411.52 tons. </em><em>Single pile carrying capacity is 205.76 tons .Settlement in the loading test results 10mm is smaller than from the setlement in calculation results. The stress acting on the pile cap of 12.453 kg/cm<sup>2</sup> is smaller than the permit strees of 13 kg/cm<sup>2</sup>.</em></p>

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