EARTHQUAKE ANALYSIS OF RCC BUILDING ON SLOPING GROUND WITH DIFFERENT ANGLESijasret.com/VolumeArticles/FullTextPDF/723_11... · 2021. 3. 26. · EARTHQUAKE ANALYSIS OF RCC BUILDING

|| Volume 6 || Issue 3 || March 2021 || ISSN (Online) 2456-0774

INTERNATIONAL JOURNAL OF ADVANCE SCIENTIFIC RESEARCH

AND ENGINEERING TRENDS

IMPACT FACTOR 6.228 WWW.IJASRET.COM DOI : 10.51319/2456-0774.2021.3.0011 67

EARTHQUAKE ANALYSIS OF RCC BUILDING ON SLOPING

GROUND WITH DIFFERENT ANGLES

Shanu Sharma1, Siddharth Pastariya2

Assistant Professor, Department of Civil Engineering, Indore Institute of Science &Technology, Indore1

Assistant Professor, Department of Civil Engineering, Sri Aurobindo Institute of Technology, Indore2

--------------------------------------------------------- ***------------------------------------------------------------

Abstract: - The objective of this research is to analyze the multistoried RC building on a sloping ground with different

angles. In this research of multistoried RC G+10 building with different sloping angles (25˚, 26˚, 27˚, 28˚, 29˚, 30˚). We have

determine the results on this G+10 structure without slope and angles having plane ground. For this analysis two types of

condition taken for the study along sloping ground .i.e. set back and step back. The results compare from this analysis are

storey drift, node displacement, base shear.

Keywords: Seismic activities, inclined ground, High-rise, Slope angles, Seismic analysis method, Step back-Setback, Response

Spectrum Method

----------------------------------------------------------------------------***-------------------------------------------------------------------------

I.INTRODUCTION

In big cities, construction on sloping land is flattering further

common due to the unavailability of smooth lands. This has

produced a most important challenge for structural engineers

with consider to structure design, due to the difficulty encounter

during the execution of projects, both for the structure and the

soil. Construction on inclined ground is not subject to any

system or suggestion in India. However, the ground is a

extensive natural hazard in the world; the threat is comparable

to an earthquake.

This investigation has been undertaken to earthquake resistant

multi-storied RCC building on an inclined ground with

different angles. Due to large number of indemnity skilled by

the high-rise buildings in the undulating areas or regions, as a

result it causes break and collapse. They are designed for the

purpose of safety which is against natural hazards. Thus, the

seismic analysis is the portion of the structural designing and

the Response Spectrum method is used to analyzing the

Dynamic analysis.

II. SCOPE OF STUDY

The purpose of this research is to investigate the performance

of multistory RC framed building on sloping ground in view of

seismic zone factor. The dynamic analysis is done for this

project considering the different parameters to analyze the

consequence and behavior of the structure on an sloping

ground. Generally, the step back structures are used on

undulating and sloping areas for the successful performance of

the structure. Thus it is not achievable to execute successfully

without the load resisting system..

III. OBJECTIVE OF STUDY

In hilly region, there are probabilities of uncertainty spoliation

to building structure. To avoid the seismic activities the multi-

storied structure on different slope analysis 25˚, 26˚, 27˚, 28˚,

29˚, 30˚degree sloping ground. Analysis was done on basis of

various research papers, which are observed on the structure

performance. The various reviews were carried out and

observed the result by comparing them with different results,

which were taken as-

1. To investigate the prospect of buildings to resistance the

seismic effects in different cases of step back & step back-

setback at 25˚, 26˚, 27˚, 28˚, 29˚,30˚.

2. To validate highest Axial forces in columns at ground level.

3. To obtain and investigate maximum shear forces in columns

along Y and Z directions.

4. To display maximum Bending moments in columns for

various cases.

5. To explore the maximum Shear forces in beams parallel to X

& Z direction for various cases.

6. To examine the maximum Torsion moments in beam along

different directions.

7. To find out the Storey Drift along X and Z directions.

8. To analyze the maximum Base shear along X and Z

directions.

9. To study the maximum Frequency along both X and Z

directions.

10. To investigate the maximum Nodal displacements along X

and Z directions

IV. PROBLEM STATEMENT

The following problems considered in G+10 RC

Buildings which is shown in below table





Table: Dimensions of different components of building

S.NO Particulars Dimensions/value

ZONE V

1 Building storey G+10

2 Seismic Zone V

3 Floor to floor height 3.8m

4 Total plot area 49×20.40m2

5 Column size 500×300mm

6 Beam size 400×350mm

7 Plate thickness 125mm

8 Dead load

9 Live load Roof= 1.6KN/M2

Floor= 3.2KN/M2

10 Earthquake load Response Spectrum as per IS

1893-2002 ( Part-2)

11 Zone factor V

Load Combinations

The following load combinations are taken as per IS code

which are listed below

1. 1.5(DL+LL)

2. 1.2(DL+LL±EQ-X)

3. 1.2(DL+LL±EQ-Y)

4. 1.5(DL±EQ-X)

5. 1.5(DL±EQ-Y)

6. 0.9DL±1.5EQ-X

7. 0.9DL±1.5EQ-Y





CASE 1: BUILDING MB1- Normal building on plane ground [0 degree inclination]

CASE 2: BUILDING MB2- Building with Step Back configuration [25 degree inclination]





CASE 3: BUILDING MB3- Building with Step Back configuration [26 degree inclination]

CASE 4: BUILDING MB4 – Building with Step back configuration [27 degree inclination]





CASE 5: BUILDING B5-Building with Step back configuration [28 degree inclination]





CASE 6: BUILDING MB6- Building with Step back configuration [29 degree inclination]





CASE 7: BUILDING MB7- Building with Step back configuration [30 degree inclination]

CASE 8: BUILDING MB 8- Building with Step back set back configuration [25 degree inclination]





CASE 9: BUILDING MB 9- Building with Step back set back configuration [26 degree inclination]

CASE 10: BUILDING MB10- Building with Step back setback configuration [27 degree inclination]





CASE 11: BUILDING MB11- Building with Step back set back configuration [28 degree inclination]

CASE 12: BUILDING MB12- Building with Step back set back configuration [29 degree inclination]





BUILDING MB 13- Building with Step back set back configuration [30 degree inclination]





V. RESULT & DISCUSSION

STEP BACK CASES

5.1.1 Discussion for Step back Building cases

Table 5.1 Storey Drift for different Buildings in Z direction

S.NO 1 2 3 4 5 6 7

BUILDING

CASE

MB0 MB1 MB2 MB3 MB4 MB5 MB6

HEIGHT

(m)

22.80 26.60 26.60 26.60 3.80 3.80 26.60

STOREY

DRIFT Z

0.8758 0.6956 0.6886 0.6776 0.9355 0.0569 0.6628

Graph 5.1: Graphical Representation of Storey Drift along Z direction for all buildings.





Table 5.2 Storey Drift for different Buildings in Z direction

S.NO 1 2 3 4 5 6 7

BUILDING

CASE


HEIGHT

(m)

22.80 26.60 26.60 26.60 3.80 3.80 26.60

STOREY

DRIFT Z

0.8758 0.6956 0.6886 0.6776 0.9355 0.0569 0.6628






STEP BACK SET BACK

Discussion on Step back Set back Building cases

Table 5.3 Storey Drift along X direction

S.NO 1 2 3 4 5 6 7

BUILDING

CASE


HEIGHT

(M)

15.20 15.20 15.20 45.60 15.20 11.40 11.40

STOREY

DRIFT IN X

DIRECTION

0.5742 0.5148 0.5083 0.6928 0.5188 0.5477 0.5477

Graph 5.3: Graphical Representation of Storey Drift along X direction for all buildings.





Table 5.4 Storey Drift for all buildings along Z

S.NO 1 2 3 4 5 6 7

BUILDING

CASE


HEIGHT

(M)

22.80 41.80 41.80 38.00 41.80 3.80 38.00

STOREY DRIFT

IN Z

DIRECTION

0.8758 0.6938 0.6913 0.6646 0.6790 0.464 0.6383






VI. CONCLUSION

The conclusion of work gives the brief description about the

result and parameters which are analyzed for different 13 cases.

In these cases, step back and step back set back are comparing

to each other. Different cases have been analyzed by different

parameters such as minimum and maximum values. The

minimum values are taken as the part of conclusion that the

structure has been in the worst case. Following conclusion

obtained from the analysis study for different cases-

1. On comparing all the story drift at different height and

comparing all different building case are the minimum in

building case MB5 along X direction. And are minimum in

building case MB5 along Z direction. In step back set back the

story drift at different height and comparing all different

building case are the minimum in building case MB7 along X

direction. And are minimum in building case MB11 along Z

direction.

REFERENCES

1.B.G. Birajdar1, S.S. Nalawade2.(2004) “Seismic analysis of

building resisting on sloping ground 13th World Conference on

Earthquake Engineering Vancouver, B.C., Canada August 1-6,

2004 Paper No. 1472.

2.C.A Deshpande. P. M. Mohit (2014) Effect of Sloping

Ground on Step- Back And Setback Configurations of R.C.C.

Frame Building International Journal of Engineering Research

& Technology (IJERT) ISSN: 2278-0181 IJERT V3IS100299

Vol. 3 Issue 10, pp. 379-382.

3.D.S Bhalchandra (2015 ) “Seismic Behavior of RC Buildings

Constructed on Plain and Sloping Ground with Different

Configuration of Shear Walls” ISSN: 2349-8404; Online ISSN:

2349-879X; Volume 2, Number 10; pp. 59-65.

4.Jain and Rakesh (2017) “Analysis of building constructed on

sloping ground for different types of soil”, International Journal

For Technological Research In Engineering Volume 4, Issue

12, August-2017 ISSN (Online): 2347 – 4718.

5.J.Joseph,( 2017)” Seismic Analysis of Step back-Set back

building on Sloping ground with Bracing systems”, Imperial

Journal of Interdisciplinary Research (IJIR), Vol-3, Issue-8,

ISSN: 2454-1362, pp- 669-676.

6.J.Jyotsna Seismic Analysis of Step back-Set back buildingon

Sloping ground with Bracing systems Imperial Journal of

Interdisciplinary Research (IJIR) Vol-3, Issue-8, 2017 ISSN:

2454-1362.

7.K.Vgarg,(2014),” Effect of sloping ground on sloping ground

on structural performance of RCC building under seismic

load”,ISSN: 2348-4098 Vol 2 ISSUE (v II) pp-1312- 1321.

8.K.SRathod”(2015)Seismic Analysis of RCC Building Resting

on Sloping Ground with varying Number of Bays and Hill

Slopes” International Journal of Current Engineering and

TechnologyE-ISSN 2277 – 4106, P-ISSN 2347 – 5161.

9.K.Kumar,S.Gupta (2018), “DYNAMIC STUDY OF STEP

BACK AND SET BACK BUILDING”, International Journal of

Civil Engineering and Technology (IJCIET) Volume 9, Issue 5,

pp. 185–190, Article ID: IJCIET_09_05_021, ISSN Print:

0976-6308 and ISSN Online: 0976-6316 pp 185-190.

10.M.H. Shah (2016 ) “ Seismic Analysis of Building on

Sloping Ground Considering Bi- Directional Earthquake” April

2016 IJSDR | Volume 1, Issue 4 ISSN: 2455-2631 pp.59- 62.

Documents

EARTHQUAKE ANALYSIS OF RCC BUILDING ON SLOPING GROUND WITH DIFFERENT ANGLESijasret.com/VolumeArticles/FullTextPDF/723_11... · 2021. 3. 26. · EARTHQUAKE ANALYSIS OF RCC BUILDING