scholarly journals Finite Element Modelling and Analysis of Hollow and Concrete Infilled Spun Pile

2021 ◽  
Vol 9 (VI) ◽  
pp. 4533-4536
Author(s):  
Jisha S
Keyword(s):  
Carrying Capacity ◽  
Finite Element Modelling ◽  
Elastic Behaviour ◽  
Dissipated Energy ◽  
Seismic Zone ◽  
Load Carrying Capacity ◽  
Concrete Pile ◽  
Load Carrying ◽  
The World ◽  
Load Analysis

In the medium to high seismic zone, spun pile for structural foundation should be designed with elastic behaviour due to low ductility and dissipated energy. Spun pile is also termed as prestressed hollow concrete pile (PHC). Spun pile is one of the types of piles are widely used in the world construction, for example in building and bridge. However, it is important to note that spun piles have limited ductility so that they are not intended to response inelastically during major earthquakes. spun piles behave brittle manner in both axial force domination and flexural moment domination. Recently spun piles are commonly used directly as the piers of elevated slab such as viaduct called pile-supported slab viaduct (PSSV). In this paper the hollow spun pile is infilled with concrete and concentric load analysis is carried out. Then comparing the axial load carrying capacity of hollow and concrete infilled spun pile.

Load Carrying Capacity of Hybrid FRP-Concrete Composite Pile

2011 ◽  
Vol 250-253 ◽  
pp. 1165-1172 ◽  
Author(s):  
Joon Seok Park ◽  
Seong Sik Lee ◽  
Jeong Hun Nam ◽  
In Kyu Kang ◽  
Dong Jun An ◽  
...  
Keyword(s):  
Carrying Capacity ◽  
Filament Winding ◽  
Transverse Load ◽  
Load Carrying Capacity ◽  
Concrete Pile ◽  
Load Carrying ◽  
Theoretical Investigations ◽  
Composite Pile ◽  
New Type ◽  
Frp Tube

In the study, in order to enhance the durability and constructability of the pile foundation, hybrid FRP-concrete composite pile is developed and its applicability considering construction is discussed. Existing FRP-concrete composite pile is consisted of concrete pile and filament winding FRP wound outside of the pile. To improve the axial and transverse load carrying capacities longitudinal reinforcement is also needed additionally, and hence a new type hybrid FRP-concrete composite pile (HCFFT) is suggested. A new type HCFFT which is composed of pultruded FRP, filament winding FRP, and concrete filled inside of the FRP tube is proposed to improve compressive strength as well as flexural strength of the HCFFT pile. The load carrying capacity of proposed HCFFT pile is evaluated and discussed based on the result of experimental and theoretical investigations.

Limit Load Analysis of Cylindrical Vessels Under Internal Pressure and Axial Strain

2011 ◽  
Author(s):  
Xian-Kui Zhu
Keyword(s):  
Internal Pressure ◽  
Carrying Capacity ◽  
Pressure Vessel ◽  
Axial Strain ◽  
Limit State ◽  
Limit Load ◽  
Operating Pressure ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Load Analysis

Strain-based design is a newer technology used in safety design and integrity management of oil and gas pipelines. In a traditional stress-based design, the axial stress is relatively small compared to the hoop stress generated by internal pressure in a line pipe, and the limit state in the pipeline is usually load-controlled. In a strain-based design, however, axial strain can be large and the load-carrying capacity of pipelines could be reduced significantly below an allowed operating pressure, where the limit state is controlled by an axial strain. In this case, the limit load analysis is of great importance. The present paper confirms that the stress, strain and load-carrying capacity of a thin-walled cylindrical pressure vessel with an axial force are equivalent those of a long pressurized pipeline with an axial tensile strain. Elastic stresses and strains in a pressure vessel are then investigated, and the limit stress, limit strain and limit pressure are obtained in terms of the classical Tresca criterion, von Mises criteria, and a newly proposed average shear stress yield criterion. The results of limit load solutions are analyzed and validated using typical experimental data at plastic yield.

Unusual Composition and Load-Carrying Capacity of a 100-Year Old Early Age Steel Exposition Hall

2020 ◽  
Author(s):  
V. Bogaert
Keyword(s):  
Carrying Capacity ◽  
Point Of View ◽  
Early Age ◽  
Load Carrying Capacity ◽  
Main Structure ◽  
Load Carrying ◽  
The World ◽  
World Exposition ◽  
Structural Point

<p>The Floraliahall in Ghent was built during 1912-1913 as part of a series of large infrastructure works for the world exposition of 1913. The main structure of the hall consists of 18 portal frames having 3 spans of 10.16, 40.18 and 10.16 m. The upper part of the structure is highly slender. Adversely to the customary concepts of 100 years ago, the lighter frames at 7.45 m distance, are hinged twice at the springs, whereas the more heavy frames, at 15 m distance, are completely clamped at their base. In addition, measurements show that crosssections of compressed parts have larger area than the tensile parts. From the structural point of view, these frames sometimes have an unexpected composition. The aim was to determine whether this structure can comply with contemporary requirements and codes. From measurements and simulations follows that in limited areas high stresses appear, unacceptable even in serviceability state. This may be partly due to modifications of the roof that were made inappropriately, from the uncertainty to assess certain details with the model and from ineffective analysis at the time of construction.</p>

TENSILE BEHAVIOR OF BOLTED TIMBER COMPOSITE HALF-LAP CONNECTION FOR KERUING AND SESENDOK

2016 ◽  
Vol 78 (5-4) ◽  
Author(s):  
Nurain Rosdi ◽  
Mohd Hanafie Yasin ◽  
Mohd Hazim Mohd Azam ◽  
Rohana Hassan
Keyword(s):  
Carrying Capacity ◽  
Present Finding ◽  
Tensile Behavior ◽  
Structural Member ◽  
Timber Species ◽  
Load Carrying Capacity ◽  
Bolted Joint ◽  
Load Carrying ◽  
The World ◽  
Sawn Timber

Over recent years, half-lap connection is widely used all over the world to provide longer structural member due to limited size of sawn timber in construction industries. Timber connected in joints may reduce overall mechanical properties of the structure. This paper present finding on a series of connection of half lap bolted joint member from Keruing (SG5) and Sesendok (SG7) timber species. The half-lap connection were subjected to tensile test and reinforced with GFRP sheet that were conducted until failure to determine their tensile behavior. The results showed that the GFRP help to increase the load carrying capacity of all the timber specimens especially timber species that lies in a weak strength group for almost 30 % by strength.

scholarly journals Inelastic Ultimate Load Analysis of Steel Frames Considering Lateral Torsional Buckling Under Distributed Loads

2019 ◽  
Author(s):  
Mutlu Secer ◽  
Ertugrul Turker Uzun
Keyword(s):  
Carrying Capacity ◽  
Ultimate Load ◽  
Steel Frames ◽  
Load Carrying Capacity ◽  
Lateral Torsional Buckling ◽  
Torsional Buckling ◽  
Numerical Examples ◽  
Buckling Behavior ◽  
Load Carrying ◽  
Load Analysis

Contemporary structural design approaches necessitates ways to determine realistic behavior of structures. For this purpose, inelastic ultimate load analysis methods are used widely since strength and stability of whole structure can be represented. In this study, a numerical method is proposed for determining inelastic ultimate load capacity of steel frames considering lateral torsional buckling behavior under distributed loads. In the analyses, inelastic material behavior, second-order effects and residual stresses of the structural frame system and its members are taken into account. Additionally, lateral torsional buckling behavior is considered in the analysis using finite difference method and it is used for determining the structural load carrying capacity of steel frames. Consequently, the problem associated with flexural capacity decreases due to lateral torsional buckling is precisely considered in the load increment steps of inelastic ultimate load analysis. In order to validate the proposed method, numerical examples from the literature are calculated considering the proposed method, AISC 360-16 design specification equations and approaches from the literature. Results of the numerical examples show that lateral torsional buckling is a key issue in determining structural load carrying capacity. Thus, proposed analysis method is shown to be an efficient and consistent tool for inelastic ultimate load analysis.

scholarly journals Experimental and Numerical Analyses of the Failure of Prestressed Concrete Railway Sleepers

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1704 ◽  
Author(s):  
Ramon Silva ◽  
Welington V. Silva ◽  
Jonas Yamashita de Farias ◽  
Marcos Aires A. Santos ◽  
Leonardo O. Neiva
Keyword(s):  
Prestressed Concrete ◽  
Carrying Capacity ◽  
Numerical Study ◽  
Wear Depth ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
The World ◽  
Concrete Damage ◽  
Brazilian Standard ◽  
Abaqus Software

This paper carries out the assessment of load-carrying capacity of prestressed concrete sleepers, in accordance with Brazilian Standard (ABNT NBR 11709) and AREMA Standard. In a lot of railways around the world, many prestressed concrete sleepers have failed due to Rail Seat Abrasion (RSA) and corrosion. RSA is the wear degradation underneath the rail on the surface of prestressed concrete sleepers. In this paper, a numerical study was carried out to evaluate the load-carrying capacity of the prestressed concrete sleepers, using ABAQUS software. The nonlinear using Concrete Damage Plasticity model was validated by 18 experimental results, in accordance to standards. Using the validated model, the influence of different wear depth RSA, combined with corrosion of the prestressed wires, is investigated.

About the Structural Robustness of Through Arch Bridges

2012 ◽  
Vol 178-181 ◽  
pp. 2412-2417
Author(s):  
Rui Juan Jiang ◽  
Qi Ming Wu ◽  
Yi Yan Chen ◽  
Xiao Wei Yi ◽  
Jun Tu
Keyword(s):  
Carrying Capacity ◽  
Human Error ◽  
Load Carrying Capacity ◽  
Local Damage ◽  
Structural Collapse ◽  
Structural Robustness ◽  
Load Carrying ◽  
The World ◽  
Arch Bridges ◽  
Emergency Measures

In EN1991-1-7 Eurocode 1: Part 1-7 Accidental Actions structural robustness is defined as ‘the ability of a structure to withstand events like fire, explosions, impact or consequences of human error without being damaged to an extent disproportionate to the original cause’. Accordingly, the principle of structural robustness is that local damage is acceptable, provided that it will not endanger the structure and that the overall load-carrying capacity is maintained during an appropriate length of time to allow the necessary emergency measures to be taken. For different structures the practical ways to achieve robustness are different. Lots of through arch bridges with hangers have been built throughout the world. However, the structural collapse may happen due to the hanger's damage or failure if the bridge is not designed appropriately. In this paper, the structural robustness of the through arch bridges with vertical hangers are discussed and verified by an example. Based on this study, a few practical suggestions are put forward to achieve the structural robustness for the future through arch bridges' design.

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