PSI - Issue 70

Maheshwar Bose et al. / Procedia Structural Integrity 70 (2025) 137–144

139

• To assess seismic performance parameters, including Base shear, story drift, story displacement, Time period and modal mass participation ratios. • To conduct multiple analysis methods like linear static, RSA and THA using ETABS software. 2. Materials and Methods 2.1 Structural Design parameter and Material Properties All Models are performed in ETABs software version 22.0.0. Important RC Building (office) is considered, located in Guwahati, which falls under the seismic Zone-V with a terrain category of type-II. Table.2 represents the arrangement of braces and its location type to justify the effect of location of braces in the model and the best results come from L3 configuration based on Story Stiffness with more than 50% variation at top story and rest of 2 models (V-braced and Eccentric braced) are further performed by following L3 configuration model replacing from X-brace.

Table 1. Structural Design Parameter.

Sr. No Building Description

Values

01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

Location

Guwahati

Zone and Zone factor Response Reduction Factor

Zone-V (0.36)

5

Importance factor

1.2

Soil type Wind Speed

II ( Medium Soil)

50 m/s

Terrain category

II B

Class

Total Height of Building Typical Story height Type of Building used

18m 3 m

Office Building

Length of bays @ x and y direction

5

Column Details Beam Details Steel Bracing Thickness of slab Grade of concrete Grade of Rebar Grade of Steel

350 X 350 230 X 350 ISWB 300 150 mm

M 30 Fe 500 Fe 250

Live Load

4.0kN/m2 1.0kN/m2 3kN/m2 1.5kN/m2 25kN/m2

Floor Finished load

Terrace Loading(Height = 1.0 m) incl. white wash

Terrace Loading Dead Load Density of concrete Types of Bracing provided Damping coefficient Boundary Condition

X, V, Eccentric

5%

Fixed support at the Base

Table 2: Model configuration based on Location of braces Arrangement of Braces Plan View

3D Model view

Remark

L1 arrangement is Without Braced Moment resisting Frame.

L1