Analysis and Design of Mono Column Building

Analysis and Design of Mono Column Building

Thejus Sreehari

Post Graduate Student Department of Civil Engineering

Sree Narayana Guru College of Engineering and Technology

Payyannur , Kannur , Kerala , India

Mrs. Shilpa Valsakumar

Assistant Professor Department of Civil Engineering

Sree Narayana Guru College of Engineering and Technology

Payyannur , Kannur , Kerala , India

Abstract Mono column structure are the structures supported on a single column. They are the most suitable structures that can be constructed at the flood occurring regions. The structure provides large serviceable area as compare to RCC and steel frame structures. They provide large serviceable floor space compared to framed structures with many columns. They require less area for providing foundation and gives more space for parking. In this project describes planning, structural analysis, design and drawing. The mono column supports whole structure and other members will act as cantilevers. Structural analysis by ETABS.

Keywords Mono column

1. INTRODUCTION

   Mono column building is the structure supported on a single column which provides large serviceable area as compare to RCC and steel frame structure. Mono column building supported on a single column has more aesthetic view compared to other frame structures. The requires less area for providing foundation and gives more space for parking. They are also unique. Mono column structures are constructed with RCC or Steel. Mono column structures are complicated one, compare with the other framed structures, mono column supports entire structure, all other members will act as cantilevers and mono column structure is the individual one. Eccentric loading will cause failure of structure. These structures provide more proper spaces for offices and parking. Mono column provides maximum serviceability. They are also good at the place where flood occurs. Mono column buildings decrease the excavation area of the land and saving money. This project describes planning, structural analysis, design and drawings with various components of the whole building.

   In India the state like Kerala facing flood in the monsoon season. The water level reaches approximately to the first floor of the building. The best solution of this problem is rising the living area higher from the ground level. Mono column buildings are very effective to control flood. Some of the two mono column structures are Astra Tower, Hamburg. Germany and L & Ts Construction Headquarters at Manapakkam in Chennai.

2. OBJECTIVES

   Rise in population have increased the demand of high-rise structures in the cities. Multistorey buildings aim to increase the floor area of the building without increasing the area of the land and saving money. These multi storey buildings, sky scrapers are built not just for economy of space they are

   considered icons of a citys economic power and the citys identity. Thousands of multi storey building is being built all over the world with steel as well as reinforced concrete. The main objectives of the study are

   • To analyse and design a mono column building

   • To compare the different shaped mono columns like rectangular and circular etc.

   • To compare the serviceable floor space with structure supported on many column

3. SUMMARY OF LITERATURE REVIEW

   From literature review, it is found that Mono column buildings has unique structure. They have good aesthetic view. Mono column structure can withstand all loads including earthquake loads and wind loads. Mono column building save ground space as requires less area for proving foundations and providing more space for parking.

4. METHODOLOGY

   The building contains four stories including the mono column. The plan is prepared using auto CADD. All the supports are fixed. The ground storey is designed and analysed. The height of mono column is 3m from the ground level. Each storey is 3m height. Two types of models are analysed using ETABS software. The first one is rectangular type mono column which support the entire structure. Another one is a circular mono column with same cross- section as that of the rectangular column. The structure is a residential building with four stories. The four stories supported by the 3m height mono column. The mono column extends to bottom to the top of the building.

   Fig.1. Plan of floor 1

   Fig 2. Plan of floor 2

   The figure 1 and figure 2 shows the floor plan of first and second stories respectively. The third and fourth stories has the same plan as that of the second story. The figure 3 is the elevation of the entire building.

   Fig 3. Elevation

   1. RECTANGULAR MONO COLUMN

      The first model of the study consists of the mono column with rectangular cross section. The single column size is 1.8mx1.8m.

      TABLE 1. Details of rectangular mono column building

      Content	Description
      Mono column size	1.8 x 1.8 m
      Normal column size	600 x 600 mm
      Beam 1	230 x 400 mm
      Beam 2	600 x 600 mm
      Slab thickness	150 mm
      Mono column type	Rectangular

      Fig 3. 3D view rectangular mono column

      Fig 4. Deflection- rectangular mono column

   2. CIRCULAR MONO COLUMN

   The second model of the study consists of the mono column with circular cross section. The diameter of the circular mono column is 2.03 m. The circular mono column has the same cross-sectional area of rectangular mono column.

   Content	Description
   Mono column size (diameter)	2.03 m
   Normal column size	600 x 600 mm
   Beam 1	230 x 400 mm
   Beam 2	600 x 600 mm
   Slab thickness	150 mm
   Mono column type	circular

   TABLE 2. Details of rectangular mono column building

   Fig 5. 3D view circular mono column

   Fig 6. Deflection- circular mono column

   TABLE 3. The default load combinations

5. RESULTS

   The different load combinations are applied and the base reactions, maximum deflection of stories, shear force and bending moments are obtained.

   1. RECTANGULAR MONO COLUMN

      TABLE 4. Base reactions- rectangular

      TABLE 5. Maximum deflection in Y direction-rectangular

      TABLE 6. Maximum deflection in X direction-rectangular

      Fig 6. Maximum bending moment- rectangular TABLE 7. Shear force in x direction- rectangular

      TABLE 8. Shear force in Y direction- rectangular

   2. CIRCULAR MONO COLUMN

   TABLE 9. Maximum deflection in Y direction-circular

   TABLE 10. Maximum deflection in X direction-circular

   TABLE 11. Base reactions- circular

   Fig 7. Maximum bending moment- circular TABLE 12. Shear force in x direction- circular

   TABLE 12. Shear force in Y direction- circular

6. CONCLUSIONS

   A rectangular mono column (1.8 m x1.8 m) building analyzed. The maximum displacement is 54.58 mm in Y direction and 36 mm in X direction. The maximum shear force in X direction is 1260.5 kN and 1308.9 kN in Y direction. A circular mono column (d = 2.03m) building also analzed. The maximum displacement is 57.6 mm in Y direction and 37.3 mm in X direction. The maximum shear force in X direction is 1223 kN and 1223 kN in Y direction. The study shows that the rectangular mono column structure has less deformation than circular mono column structure.

7. REFERENCES

[1] T.Subramani et al.Design And Analysis Of Mono Column Building By Using STAAD Pro International Journal of Application or Innovation in Engineering & Management (IJAIEM),Volume 8, Issue 3, March 2019.

[2] G.Pradeep et al Design of a Structure Supported on a Single Column IJCRT Volume 6, Issue 1 February 2018 , ISSN: 2320-2882.

[3] Mr. Jayant S. Ramteke et al A Comparative Study on Analysis of a Conventional Multi-Storey Building & A Single Column Building, International Journal for Research in Applied Science & Engineering Technology (IJRASET),Volume 7 Issue V, May 2019.

[4] Raj Joshi et al. Comparitive analysis on behaviour of single column structure with waffle slab and flat slab, International Journal of Creative Research Thoughts (IJCRT),Volume 8, Issue 3 March 2020.

[5] Velagapudi Sravani , et al. Comparison of seismic respons for shear wall building with conventional framed building by using ETABS, International Journal For Technological Research In Engineering, Volume 6, Issue 6, February-2019.

[6] Raj Joshi et al. Comparitive analysis on behaviour of single column structure with waffle slab and flat slab, International Journal of Creative Research Thoughts (IJCRT),Volume 8, Issue 3 March 2020.

[7] Ankur Pandey et al. Mono column single-storey structural system using composite material, IAETSD, ISSN No. 2394- 8442,volme 5, issue 4, april,2018.