International Research Journal of Engineering and Technology (IRJET) Volume: 09 Issue: 05 | May 2022 www.irjet.net
e-ISSN: 2395-0056 p-ISSN: 2395-0072
Comparative Study of Irregular Shape Buildings Miss. Kalyani Radheshyam Patil 1 Prof. Dr. V. R. Rathi2, Dr. P. K. kolase Student, M.E, Dept. of Civil Engineering, Pravara Rural Engineering College, Loni.1 Professor, Dept. of Civil Engineering, Pravara Rural Engineering College, Loni2 ---------------------------------------------------------------------------***--------------------------------------------------------------------------Abstract— When a building is carried by Heavy Loads, structures are built at high elevations. There are two kinds which includes both Earthquakes and wind loads, a major of flaws. building collapse occurs. Many modern buildings are involved in the value of buildings, and it is very difficult to A building is considered to be regular when its plan with a standard design. This inconsistency is the configurations are nearly symmetrical along the axis, and cause of building collapse due to flexible loads. As a result, it is said to be irregular when there is no symmetry and thorough research is needed to achieve high performance discontinuity in geometry, mass, or load resisting and even poor configuration. The impact of vertical materials. Torsion forces are amplified in asymmetrical alignment and bulk instability on multi-storey buildings setups. IS 1893: 2016 (part 1) explains the building under flexible loads is investigated in this work. Three RC configuration concept for improved seismic performance building frames have been selected, and it is recommended of RC structures. In terms of the size and shape of the that all framed and modified frames be analyzed. The structure, the arrangement of structural parts, and mass, ETABS analysis system is recommended to be analyzed by the building configuration has been defined as regular or all parties to determine all migrations. The 3-D frames of irregular. Irregularities are classified into two categories. the G + 20 floor with the same height arrangement across 1) Horizontal irregularities include asymmetrical plan its entire length and the exact uneven configuration forms (L, T, U, and F) or discontinuities in horizontal starting on the 9th floor are considered in this study. It is resisting elements such as re-entrant corners, wide suggested that the responses of all previous frames are apertures, cut outs, and other modifications such as limited to all upload combinations. The reaction spectrum torsion, deformations, and stress concentrations. 2) analysis method is proposed to detect lateral loads and Vertical irregularities relate to abrupt changes in a floor checks of all three frames due to earthquake loads, structure's strength, stiffness, geometry, and mass in the and IS 1893 (Part 1): 2016 recommends dynamic analysis vertical direction. The primary goal of this work is to investigate the reaction of irregular structures under (direct dynamic analysis). dynamic loads. It is proposed in this study to take into Keyword: RCC, Irregularity, ETABS , IS 1893 , G+20 account building frames with uneven elevations and examine the reaction and behaviour of the structures storied , Earthquake under earthquake and wind loads. Three RC building frames are chosen for this purpose, and it is recommended 1. INTRODUCTION to assess all of the frames that are considered and Structure failure begins in weak locations during an modelled. The ETABS analysis programme is earthquake. The instability of the mass, stiffness, and recommended for the study of all structures in order to get geometry of the structure all contribute to this all displacements. G+20 Storied 3-D frames with vulnerability. Unusual structures are buildings that have symmetrical elevation arrangement throughout its height this suspension. Unusual structures have a significant and unsymmetrical vertical configuration beginning on the impact on urban infrastructure. One of the leading reasons 9th storey are investigated in this study. It is proposed that of structural failure during an earthquake is poor location. the responses of all of the preceding frames be calculated Soft flooring, for example, are the most significant of the for all load combinations. The response spectrum analysis collapses. As a result, the impact of direct negative approach is proposed to estimate the lateral loads and consequences on seismic activity is becoming increasingly storey shears of all three frames owing to seismic loads, essential. Variations in height and size give variable and the IS 1893(Part 1): 2016 has approved dynamic elements for these structures that distinguish them from analysis (linear dynamic analysis). standard structures. (Thowdoju et al. 2016) The problems of building materials could be attributed to their odd distribution of size, strength, and durability. Analysis and design are exceedingly difficult when such © 2022, IRJET
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