PSI - Issue 71

Nisha Thakur et al. / Procedia Structural Integrity 71 (2025) 233–240

235

Fig. 1 Concentric Bracings Venkatesh et al. (2013)

Fig. 2 Eccentric Bracings Dusicka et al.(2006)

2. Modelling A 3D model is created and analyzed using STAAD PRO V8i software. The load resisting building models are used. Loads are applied laterally in buildings on the basis of IS 1893:2016 code. Based on IS 1893:2016, this study is performed for seismic zone IV. The considered building consists of brick masonry and reinforced concrete elements. In some cases, soil behavior or properties will not affect the response of structure over the soil. Moreover, the scope of the present study is restricted to the study of the behavior of structure only and hence in the present study the soil structure interaction is not considered. In this paper, the four-storey building has been analyzed for the following conditions: • For loads due to gravity only • For loads due to seismic forces • With bracing systems of different types 2.1. Analysis of G+4 storey building: The modeling data of the Ground+4 storey building for the IV seismic zone is shown in Table 1. For analyzing, an X-type bracing system is used for peripheral columns only.

Table 1: Modelling Data of the G+4 storey building

Type of Structure Number of storey

Ordinary Moment Resisting Frame

G + 4

The height of each storey

3.00 m

Building type Type of footing Seismic Zone Zone factor, Z

Residential

Isolated footing

IV

0.24

Importance factor, I

1.0 3.0

Response Reduction factor, R

Material Property

Modulus of elasticity of concrete, (E)

22.36 × 10 6 KN/m 2

Grade of Concrete Grade of Steel Density of RCC

M20

Fe 415

25 KN/m 2

Young’s Modulus of brick masonry

3.50 × 10 6 KN/m 2

Density of brick masonry

19.20 KN/m 2

Member Property

Slab thickness

0.125 m

Beam size

0.23 × 0.30 m 0.23 × 0.30 m

Column size

Thickness of wall

0.23 m

Dead Load Intensity

Due to the Floor Finish

1.0 kN/m 2