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Seismic analysis of concrete gravity dams by decoupled modal approach in time domain
Concrete gravity dam Pine Flat Dam decoupled modal approach Newmark’s method
2009/2/19
A modal approach is proposed for dynamic analysis of general concrete gravity dam-reservoir systems in time domain. The method is explained initially, and the analysis of Pine Flat Dam is considered a...
Analysis of Retrofitted Reinforced Concrete ShearBeams using Carbon Fiber Composites
Reinforced concrete finite element modeling retrofitting shear beam
2009/2/19
This paper presents the numerical study to simulate the behavior of retrofitted reinforced concrete (RC) shear beams. The study was carried out on the unretrofitted RC beam designated as control beam ...
The Effect of Detailing Steel in the CompressionRegions of Internal Supports on the Ductility ofReinforced Concrete Beams
Strengthening Ductility Reinforced concrete
2009/2/19
A clause on detailing in AS 3600 stipulates that 25 percents of the maximum steel in the span of a reinforced concrete beam has to be extended beyond the near face of each internal support. This sugge...
The effects of sulfate solution on the behavior of reinforced concrete beams
Crack Deflection Stiffness Sulfate solution
2009/2/18
Reinforced concrete structures can be adversely affected by chemical aggressive environments such as sulfates and chlorides. It is necessary to study the durability and some other critical engineering...
Upgrading the shear strength of non-ductile reinforced concrete frame connections using FRP overlay systems
shear FRP connections strength ductility
2009/2/17
This investigation presents the use of Fiber Reinforced Polymer (FRP) composite systems in upgrading existing reinforced concrete frames to meet strength and ductility requirements laid out in recent ...
Behaviour of retrofitted reinforced concrete beams under combined bending and torsion : A numerical study
torsion numerical study
2009/2/17
This paper presents the numerical study on unretrofitted and retrofitted reinforced concrete beams subjected to combined bending and torsion. Different ratios between twisting moment and bending momen...
When Old Meets New: Monitoring Load Sharing in a Concrete Building Extended Upwards
Monitoring Load Concrete Building
2009/1/15
To meet increased demand for office and residential space in developed cities, many sites are being redeveloped. This usually involves the demolition of existing structures and the building new higher...
Seismic Drift Demand and Capacity of Non-seismically Designed Concrete Buildings in Hong Kong
Non-seismically Designed Concrete Buildings
2009/1/15
This paper reviews the seismic engineering research conducted in Hong Kong with special emphasis on the prediction of the seismic drift demand and capacity of existing buildings which have not been de...
Modelling reinforced concrete structures subjected to impulsive loading using concrete lattice model
structures impulsive loading concrete lattice model
2009/1/14
A two-dimensional behavioral rate dependent lattice model (RDLM) capable of analyzing reinforced concrete members subjected to impulsive loading is presented. As a result of the impulsive loads reachi...
Flexural fatigue strength prediction of steel fibre reinforced concrete beams
steel fibre concrete beams
2009/1/14
Results of an investigation conducted to study the fatigue strength of steel fibre reinforced concrete (SFRC) containing fibres of mixed aspect ratio are presented. Approximately eighty one beam speci...
Characteristics of Concrete with Admixtures
Concrete Admixtures Superplasticizers Strength Durability
2010/8/18
In recent decades, tremendous success has been achieved in the advancement of chemical admixtures for Portland cement concrete. Most efforts have centered on improving the properties of concrete with ...
Present Stage of Gelivity Resistant Concrete Features
Concrete Freeze Thaw Admixtures Cement Mechanical Strength
2010/8/18
The characteristics of the concrete gelivity by imposing strictly conditions to the composition are studied. We observed the new forme structure so as components from cement stone, vulnerable at freez...
MESO-SCOPIC NUMERICAL ANALYSIS OF CONCRETE STRUCTURES BY A MODIFIE LATTICE MODEL
lattice model RC-structures heterogeneous material strong discontinuity
2008/12/30
Realistic simulation of the mechanical behavior of concrete and reinforced concrete structures is performed by using a lattice type numerical model. Five different types of lattice members with simpl...
PREDICTION METHOD FOR SEISMIC DAMAGE OF REINFORCED CONCRETE BRIDGE COLUMNS
bi-directional cyclic loading RC column members energy dissipation damage index
2008/12/29
This research aims to determine the effect of loading pattern on the damage of a reinforced concrete bridge column. Five specimens were tested with uni-directional or bi-directional cyclic loading pa...
EXPERIMENTAL STUDY OF REINFORCED CONCRETE BRIDGE PIERS SUBJECTED TO BI-DIRECTIONAL QUASI-STATIC LOADING
bi-directional cyclic loading RC column members plastic hinge zone length energy dissipation
2008/12/26
This research aims to determine the effect of loading pattern on the damage of a reinforced concrete bridge column. Five specimens were tested with uni-directional or bi-directional cyclic loading pa...