Homogeneous Substitute Material Model for Reinforced Concrete Modeling

Sensitivity to Material Modeling Choices in Seismic Demand Estimation for Reinforced Concrete Frames

This paper examines the sensitivity of computed seismic system demands to modeling choices made at the material level. Accurate constitutive models of the constituent materials in a reinforced concrete (RC) section, namely, unconfined concrete, confined concrete and reinforcing steel are necessary for direct use in fiber-section discretization of RC components. The characteristics of the cyclic...

Microplane Model M6f for Fiber Reinforced Concrete

The new microplane model M6f for fiber reinforced concrete features several improvements over the earlier versions: (i) An explicit volumetric-deviatoric split to no split transition formulation in tension which eliminates spurious contraction under tension that the earlier models suffered; (ii) tension-compression load cycles are now correctly simulated using the loading/unloading rules prescr...

Modeling of Unreinforced and Reinforced Pavement Composite Material Using HISS Model (RESEARCH NOTE)

With the advent of high strength geogrids, the interest of civil engineers in using geosynthetics as reinforcement material in pavement construction has increased. An experimental study is carried out at IIT Delhi to understand the effect of geogrid in unpaved roads. Behavior of composite material, which comprises of Yamuna sand as subgrade and Water Bound Macadam (WBM) as base course is studie...

Developing a 3 D finite element model for reinforced concrete

Shear-friction truss model for reinforced concrete beams

This paper presents a new model, called the "shear-friction truss model," for slender reinforced concrete beams to derive a clear and simple design equation for their ultimate shear strength. In this model, a portion of the shear strength is provided by shear reinforcement as in the traditional truss model, and the remainder by the shear-friction mechanism. Friction resistance is derived consid...