Influence of Contact Parameters on Load-Carrying Capacity of Hybrid Composite Cross-Section

2014 ◽  
Vol 897 ◽  
pp. 157-160
Author(s):  
Peter Kotes
Keyword(s):  
Carrying Capacity ◽  
Composite System ◽  
Concrete Slab ◽  
Specific Treatment ◽  
Concrete Cover ◽  
Load Carrying Capacity ◽  
Building Structures ◽  
Reinforced Concrete Slab ◽  
Reinforced Plastic ◽  
Load Carrying

FRP (Fiber Reinforced Plastic) materials are corrosion resistant not requiring any specific treatment. The utilization of these materials is expanding. New research works have started to focus on using these materials on self-contained formwork in composite systems. It allows decreasing the concrete cover on minimum value just to assure sufficient bonding between reinforcement and concrete (the influence of aggressive environment is minimal). Moreover, the stay-in-place formwork is self-contained. It means using this system as formwork during casting of concrete and another supporting structure is not needed. The paper is focused on experimental analysis of stay-in-place GFRP (Fiberglass Reinforced Plastic) formwork in composite system (three-functional GFRP formwork and reinforced concrete slab – RC slab) and its use on floors in building structures. The load-carrying capacity of the composite system is highly influenced by quality of cohesion between GFRP formwork and concrete. This cohesion was investigated by using “push tests”. The results from experimental push tests were compared with the numerical model and also will serve for numerical modelling of real bonding of the girders.

PARAPET STIFFNESS EFFECT ON LOAD CARRYING CAPACITY OF MULTI-LANE CONCRETE SLAB BRIDGES

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Sarah Jaber ◽  
Mounir Mabsout ◽  
Kassim Tarhini
Keyword(s):  
Reinforced Concrete ◽  
Carrying Capacity ◽  
Bridge Deck ◽  
Concrete Slab ◽  
Load Carrying Capacity ◽  
Bending Moments ◽  
Reinforced Concrete Slab ◽  
Analysis And Design ◽  
Load Carrying ◽  
Longitudinal Bending

Bridge specifications do not consider the effect of parapet stiffness in the analysis and design of reinforced concrete slab bridges. This paper performs a parametric investigation using finite element analysis (FEA) to study the effects of parapet stiffness on live load-carrying capacity of two-span, three-and four-lane concrete slab bridges. This study analyzed 96 highway bridge cases with varied parameters such as span-length, bridge width, and parapet stiffness within practical ranges. Reinforced concrete parapets or railings, built integrally with the bridge deck, were placed on one and/or both sides of bridge deck. The longitudinal bending moments calculated using the FEA results were compared with reference bridge cases without parapets, as well as AASHTO Standard and LRFD specifications. The FEA results presented in this paper showed that the presence of concrete parapets reduces the negative bending moments by 15% to 60% and the positive bending moments by 10% to 45%. The reduction in longitudinal bending moments can mean an increase in the load-carrying capacity of such bridges depending on the parapet stiffness. This investigation can assist engineers in modeling the actual bridge geometry more accurately for estimating the load-carrying capacity of existing concrete bridges. Hence, new bridges can be designed by considering the presence of concrete parapets. Parapets can be used as an alternative for strengthening existing one and two-span reinforced concrete slab bridges.

Analysis of Reinforced Concrete Slab Structures

2015 ◽  
Vol 769 ◽  
pp. 97-100
Author(s):  
Oldrich Sucharda ◽  
Jan Kubosek
Keyword(s):  
Reinforced Concrete ◽  
Carrying Capacity ◽  
Concrete Slab ◽  
Linear Analysis ◽  
Load Carrying Capacity ◽  
Reinforced Concrete Slab ◽  
The Real ◽  
Software Applications ◽  
Load Carrying ◽  
Non Linear

The paper deals with the designing and analysing of concrete structures. A particular attention is paid to a multi-segment slab made from reinforced concrete. The purpose of the paper is to evaluate, in a non-linear analysis, impacts of input parameters of the concrete on the real load-carrying capacity of the ceiling which has been designed originally in DeMKP. FEM software applications have been used in the analysis. This is an in-house application DeMKP for designing the systems in line with standardised procedures. Another software is ATENA Science which can be used for non-linear analyses.

Load-carrying capacity of reinforced plastic pipes sealed with a film

1977 ◽  
Vol 9 (9) ◽  
pp. 1039-1044
Author(s):  
G. P. Zaitsev ◽  
V. N. Sud'in
Keyword(s):  
Carrying Capacity ◽  
Load Carrying Capacity ◽  
Plastic Pipes ◽  
Reinforced Plastic ◽  
Load Carrying

Establishing the law of distribution of load-carrying capacity of fiberglass-reinforced plastic tubes

1976 ◽  
Vol 10 (6) ◽  
pp. 885-888
Author(s):  
A. M. Sinyukov ◽  
B. I. Bel'chich ◽  
V. V. Kostylev ◽  
V. N. Onoprienko
Keyword(s):  
Carrying Capacity ◽  
Load Carrying Capacity ◽  
Reinforced Plastic ◽  
Load Carrying ◽  
The Law

Effect of railing deterioration on load carrying capacity of concrete slab bridges

2019 ◽  
Vol 15 (4) ◽  
pp. 197-205
Author(s):  
F. Darwich ◽  
K. Tarhini ◽  
M. Mabsout
Keyword(s):  
Carrying Capacity ◽  
Concrete Slab ◽  
Load Carrying Capacity ◽  
Load Carrying

Assessment of Load Carrying Capacity for Concrete Rectangle Section Simple Beam Subjected to Fire

2012 ◽  
Vol 204-208 ◽  
pp. 2841-2845
Author(s):  
Gang Zhang ◽  
Shuan Hai He ◽  
Hong Jun Guo
Keyword(s):  
Fire Resistance ◽  
Carrying Capacity ◽  
Concrete Beam ◽  
Fire Hazard ◽  
Assessment Method ◽  
Concrete Cover ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Cover Thickness ◽  
Beam Bridge

The assessment method of load carrying capacity for concrete rectangle section simple beam subjected to fire was presented. Comprehensively considering influencing parameters, load carrying capacity for reinforced concrete rectangle section simple beam was analyzed in a fire hazard by using numerical simulation program. A series of safety assessment regularities for the reinforcement pieces was put forward subjected to fire. The studied results indicate that: the ultimate moment for reinforcement concrete beam bridge tends to decrease linearly after 40 minute, the fire resistance of the reinforcement concrete rectangle section simple beam increase linearly with the increment of the concrete cover thickness; Therefore, the increment of concrete protective thickness is effective to fire resistance and safety grade for the reinforcement concrete beam.

Evaluation of the Load Carrying Capacity of a Rockfall Protection Gallery

2011 ◽  
Vol 82 ◽  
pp. 235-240
Author(s):  
Sara Ghadimi Khasraghy ◽  
Christina Röthlin ◽  
Thomas Vogel
Keyword(s):  
Carrying Capacity ◽  
Degrees Of Freedom ◽  
Impact Load ◽  
Concrete Slab ◽  
Load Carrying Capacity ◽  
Return Periods ◽  
Lake Lucerne ◽  
Load Carrying ◽  
The Impact ◽  
Rockfall Protection

Mountainous areas of Switzerland are exposed to complex natural conditions, which combined with climate changes cause a variety of natural hazards. Rockfall is one of these hazards, and the risk associated with it tends to increase in recent years. The roads below the Lopper cliff at the shore of Lake Lucerne lead through one of these endangered areas. The roads are closed for traffic, following a rockfall incident in October 2009. Some rockfall protection galleries at the Lopper, which were built during 1979-1981, are subjected to a structural evaluation to allow for decisions on their further use. The current work covers estimation of the impact load carrying capacity of one of these galleries. The gallery analyzed is a cantilever pre-stressed concrete slab with variable thickness, covered by a cushion layer of soil. The behavior of the gallery is examined using finite element analyses as well as an analytical model based on a System of Multiple Degrees of Freedom (SMDF) method. The evaluation has shown that for the chosen loading case based on trajectory analyses with return periods of 30 years, the load carrying capacity of the gallery is satisfactory. However, for extreme rockfalls with return periods of 100 years, a local (punching) failure as well as a global (bending) failure can happen given that a critical section is hit

scholarly journals Nonlinear Analysis of Circular Concrete Filled Steel Tube Columns under Axial Loading

2019 ◽  
Vol 8 (12) ◽  
pp. 688-692
Keyword(s):  
Carrying Capacity ◽  
Axial Loading ◽  
Steel Tube ◽  
Load Carrying Capacity ◽  
Building Structures ◽  
Inelastic Behavior ◽  
Concrete Filled Steel Tube ◽  
Load Carrying ◽  
Cfst Columns ◽  
Von Mises

Concrete filled steel tube (CFST) columns are composite member mainly consists of concrete infilled in steel tube. In current construction industry, CFST columns are preferred to provide lateral resistance in both unbraced and braced building structures. In this paper, finite element studies were carried out on concrete filled steel tube columns under an axial composite loading by using ABAQUS/CAE. The inelastic behavior of concrete and steel tube was defined to the model by using concrete damaged plasticity model (CDP) and Johnson-cook model respectively which is available in ABAQUS/CAE. The diameters of columns were considered as 100 mm, 125 mm and 150 mm, whereas the length of columns was kept constant, i.e. 600 mm for all models. The thickness of steel tube was considered as 4 mm and 5 mm for all diameters of columns. The concrete infilled of grade M30 was used in this study. The simulations were carried out against composite loading to study the response of CFST columns in terms of load carrying capacity, displacement and von-mises stresses. The mesh conversion study was also carried out to obtain the best size of mesh corresponding to the experimental load carrying capacity of CFST columns

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