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Proceedings of

7th International Conference On Advances in Civil and Structural Engineering CSE 2017

Date
02-Jul-2017
Location
Kuala Lumpur , Malaysia
Authors
16
ISBN
978-1-63248-127-6

6 Articles Published

1. EVALUATE THE CYLINDRICAL RUBBER FENDER RESPONSE UNDER DYNAMIC LOAD

Authors: ABDULAMEER QASIM , ANIS A. MOHAMAD ALI , MOHAMAD J. K. ESSA

Abstract: Fender systems are very important part in marine and offshore structures. They are used to decrease the influence of impact forces of vessels during berthing or mooring conditions. This paper focuses on evaluating the response of a cylindrical rubber fender (Length = 5m, outer diameter = 0.5 m and inner diameter = 0.25m) subjected to impact load that comes from a mooring ship with capacity 330,000 DWT. Three curves are drawn representing the mechanical response of the cylindrical rubber fender under the influence of impact load, the first curve is the highest response and represents the result of the impact due to the initial speed of ship, but the other curves represent the reaction of cylindrical rubber fender after the initial impact.

Keywords: Cylindrical Rubber fender, Dynamic analysis, Fender reactiontime.

Pages: 1 - 5 | DOI: 10.15224/978-1-63248-127-6-32

2. PLATE BEARING TESTS ON COLLAPSIBLE SOILS IMPROVED BY COMPACTION

Authors: SAMIR IBRAHIM SHALABY

Abstract: Collapsible soils are located in aired and semi-arid regions around the world. Collapsible soils cause remarkable damage to overlying structures. To improve this soil type to allow building, it is necessary to create a compacted replacement top sand layer above this weak, compressible soil stratum to increase its bearing capacity, reduces displacement and changed soil behavior to brittle behavior. In this paper, the influence of using the same collapsing soil compacted at different compaction ratios as a replacement material with different thicknesses on collapse strains is studied using field plate load tests. The paper discusses the mechanisms of this system using a large-scale model footing for a case studies for a housing project in sixth of October city-Giza governorate- Egypt. That site has a collapsible silty sand soil. Circular plates of 750-mm diameter were employed in field tests. The load-settlement were modeled under dry conditions of soil at natural water content of 4% and

Keywords: collapsible soil, soil bearing capacity, plate load test, soil improvement, in situ tests , and soil replacement

Pages: 6 - 10 | DOI: 10.15224/978-1-63248-127-6-33

3. ANALTSIS OF IN-PLANE MOMENT LOADED TUBULAR T-JOITS USING THE FINITE ELEMENT METHOD

Authors: AHID Z. HAMOODY , ANIS A. MOHAMAD ALI , MAHMUD M.A. MAJID

Abstract: The Finite Element method is used to make a convergence study and a parametric study for T- tubular joints under in-plane bending moment. The tubular joint is modeled using a 9 noded, Hetrosis, thick shell element. ln order to simulate the actual behavior of the joint, material and geometrical nonlinearities are considered. The members material formed the tubular joint is assumed to be isotropic, elastic-perfectly plastic obeying Von Misses yield criterion, while a total Lagrangian formulation is used to include the effects of large deformation in the problem. The present study shows that the large deformation has a slight effect in strengthening or weakening the joint under in-plane bending moment. It is also concluded that the chord legth has a regardless effect on the ultimate in-plane bending moment behaviour of the joint.

Keywords: Tubular Joint, Finite Element Analysis, Mesh Generation, In-Plane Bending Moment, Chord, Brace, Large Deformation, Convergence Study.

Pages: 11 - 16 | DOI: 10.15224/978-1-63248-127-6-34

4. DYNAMIC RESPONSE OF AIR CUSHION VEHICLE’S SKIRT UNDER HIGH PRESSURE BUBBLE IMPACT

Authors: CHING-YU HSU , CHO-CHUNG LIANG , HAI-ANH NGUYEN , PHUONG-DUY VO

Abstract: Skirt is a part of air cushion vehicle (ACV) which plays a substantial role to create an over-pressure (above atmospheric pressure) between floor of structure and water surface. This pressure lifts main hull structure in order to travel through different surfaces as sea-surface, mud, and land. A suitable materials of ACV’s skirt is necessary to survive ACV before high-pressure bubble in under-water explosion (UNDEX). This paper builds up a technique which connects together the finite element method (FEM) and Coupled Eulerian- Langrangian (CEL) strategy to simulate and modify predicted data whereas the high-pressure bubble impact air cushion vehicle (ACV). To prove the promising results of this technique, authors conducted two feature studies from Klaseboer et al. (2005) [1] and A. M. Zhang again in Abaqus software [2], which showed the precision of the calculation model and method. With the similar above model, finite element simulation of the ACV’s skirt model subjected to high-pressu

Keywords: underwater, explosion, high, pressure, bubble, ACV’s, skirt, design, hovercraft, design.

Pages: 22 - 30 | DOI: 10.15224/978-1-63248-127-6-36

5. MODELLING REAERATION PHENOMENON IN RIVER USING DIMENSIONLESS APPROACH

Authors: ANURADHA PANDEY , RAM PAL SINGH

Abstract: This communication presents a methodology to evaluate the re-aeration rate term in basic dissolved oxygen (DO) deficit models by including some important parameters influencing re-aeration phenomenon in river like turbulence, width, depth and length of streams, which are necessary for fast biochemical oxygen demand (BOD) assimilation in streams. A mathematical model using dimensional approach for rate of re-aeration as well as DO deficits, using basic philosophy of Bhargava (1986) model, is presented. The simulation of data on river Ganges in India, indicate that the predictions of DO deficits are in close agreement with the experimentally observed values. The methodology presented in this paper accounts for all the important factors affecting re-aeration in streams and thus, may offer an alternative to traditionally used approaches for representing re-aeration rate in rivers/streams.

Keywords: Dissolved, oxygen; BOD, assimilation, DO, deficit, Critical, time, Re-aeration, coefficient, River, Ganges.

Pages: 31 - 35 | DOI: 10.15224/978-1-63248-127-6-37

6. SEISMIC PERFORMANCE OF INFILLED FRAMED STRUCTURES WITH OPEN GROUND STOREY

Authors: H. EL-GHAZALY , M. M. ABDELAZIZ , M. S. GOMAA

Abstract: Masonry Infill walls (MI) can be frequently found as interior and exterior partitions for architectural purposes in RC structures. Although they are generally considered to be non-structural elements, their influence on the seismic performance of the framed structures is significant. A common practice in the modern and old RC buildings is to use the ground-storey of the buildings for commercial; garages, storages, shops…etc. In the present work, the effect of the MI walls on seismic performance of the RC framed structures has been studied. For that, 2-D, six-storey, three-bay, framed structures, which are fully and partially infilled with the MI walls, have been studied using different infill walls' configuration in order to simulate the cases of ignoring or taking the stiffness and strength of the IM walls, and simulating the common practice of removing the infill walls in the ground storey. Double-strut nonlinear cyclic model for masonry walls has been utilized in order to account fo

Keywords: Infilled, frames, Open, ground, storey, Soft, storey, Time, history, analysis, Base, shear, Storey, Drift.

Pages: 36 - 40 | DOI: 10.15224/978-1-63248-127-6-05

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