ANALYSIS AND DESIGN OF HIGH RISE

BUILDINGS..

SUBMITTED BY:ISHANT KUKREJA-101681

Project Guide: Mr Chandra pal Gautam

Analysis and Design of a High Rise

RC/STEEL Residential building

located in seismic zone II on hard soil.

The framing system of the building is

moment-resisting frames with brick

masonry infill panels.

Our Project consist of analysing and

designing of three following structures

RCC

STEEL

Combination of STEEL and RCC

AIM OF OUR PROJECT….

AIM OF OUR PROJECT..

Imposing Earthquake and Wind loads on the building.Analyzing the behavior of structure after imposing earthquake and wind loads.Comparing the structures on the basis of their economy.

Introduction Wind is essentially the large scale Horizontal movement of free air. It plays an important role in design of tall structures because it exerts loads on Building. High Rise Building-A building Having height more then15m As per National Building Code 2005 of India is called High Rise Building

The materials used for the structural system of high-rise buildings are reinforced concrete and steel. Most North American style skyscrapers have a steel frame, while residential blocks are usually constructed of concrete. There is no clear definition of any difference between a tower block and a skyscraper, although a building with fifty or more storeys is generally considered a skyscraper.High-rise structures pose particular design challenges for structural and geotechnical engineers, particularly if situated in a seismically active region or if the underlying soils have geotechnical risk factors such as high compressibility 

An earthquake is the vibration, sometimes violent to the earth’s surface that follows a release of energy in the earth’s crust. This energy can be generated by a sudden dislocation of segments of the crust, by a volcanic eruption or even by a manmade explosion. In the process of breaking, vibrations called seismic waves are generated. These waves travel outward from the source of the earthquake along the surface and through the earth at varying speeds depending on the material through which they move.

EARTHQUAKE LOADING:

The RC frame participates in resisting earthquake forces. Earthquake shaking generates inertia forces in the building, which are proportional to the building mass. Since most of the building mass is present at the floor levels, earthquake induced inertia forces primarily develop at the floor levels.These forces travel downward through slabs to beams, beams to columns and walls and then to foundations from where they are dispersed to the ground. As the inertia forces accumulate downward from the top of the building, the columns and walls at the lower storey experience higher earthquake induced forces and are therefore designed to be stronger than the storey above.

EFFECT OF EARTHQUAKE ON HIGH RISE BUILDINGS:

PROGRESS SO FAR…

•Reviewed papers on high rise buildings.•Designed the layout of the building.•Design of structural elements manually.•Detailing of structural elements.

Previous Semeter

LAYOUT AND ELEVATION:

PROGRESS SO FAR…

•Designed the building in Staad Pro software.•So far designed the building without earthquake loads.

This Semeter

Frame

Imposed Wind Load

Analysis STATIC LOAD/REACTION/EQUILIBRIUM SUMMARY FOR CASE NO. 1 LOADTYPE DEAD TITLE SELF CENTER OF FORCE BASED ON Y FORCES ONLY (METE). (FORCES IN NON-GLOBAL DIRECTIONS WILL INVALIDATE RESULTS) TOTAL APPLIED LOAD ( KN METE ) SUMMARY (LOADING 1 ) SUMMATION FORCE-X = 0.00 SUMMATION FORCE-Y = -72098.50 SUMMATION FORCE-Z = 0.00 SUMMATION OF MOMENTS AROUND THE ORIGIN- MX= 901231.18 MY= 0.00 MZ= -720985.43

Beam Design B E A M N O. 80 D E S I G N R E S U L T S M25 Fe415 (Main) Fe415 (Sec.) LENGTH: 2857.1 mm SIZE: 300.0 mm X 500.0 mm COVER: 40.0 mm SUMMARY OF REINF. AREA (Sq.mm) SECTION 0.0 mm 714.3 mm 1428.6 mm 2142.9 mm 2857.1 mm TOP 279.58 0.00 0.00 279.58 279.58 REINF. (Sq. mm) (Sq. mm) (Sq. mm) (Sq. mm) (Sq. mm) BOTTOM 279.58 279.58 279.58 279.58 0.00 REINF. (Sq. mm) (Sq. mm) (Sq. mm) (Sq. mm) (Sq. mm)

Shear R/F

SHEAR DESIGN RESULTS AT DISTANCE d (EFFECTIVE DEPTH) FROM FACE OF THE SUPPORT SHEAR DESIGN RESULTS AT 700.0 mm AWAY FROM START SUPPORT VY = -14.86 MX = 0.00 LD= 3 Provide 2 Legged 8í @ 300 mm c/c SHEAR DESIGN RESULTS AT 700.0 mm AWAY FROM END SUPPORT VY = -19.24 MX = 0.00 LD= 4 Provide 2 Legged 8í @ 300 mm c/c

Column Design C O L U M N N O. 1484 D E S I G N R E S U L T S M25 Fe415 (Main) Fe415 (Sec.) LENGTH: 3000.0 mm CROSS SECTION: 500.0 mm X 500.0 mm COVER: 40.0 mm ** GUIDING LOAD CASE: 3 END JOINT: 816 SHORT COLUMN REQD. STEEL AREA : 2000.00 Sq.mm. REQD. CONCRETE AREA: 248000.00 Sq.mm. MAIN REINFORCEMENT : Provide 20 - 12 dia. (0.90%, 2261.95 Sq.mm.) (Equally distributed) TIE REINFORCEMENT : Provide 8 mm dia. rectangular ties @ 190 mm c/c

1.) Design of the RCC structure by imposing Earthquake and Wind loads.2.) Design of staircase.3.) Design of a hybrid structure consisting of RCC and Steel structural elements.5.) Cost estimation of the three structures on cost estimator.6.) Comparing the three structures on the basis of economy.

FUTURE PROSPECTS:

This topic which is design and analysis of high rise buildings helps in expanding our knowledge in the field of design and analysis. With incomes growing and large numbers of people moving to urban areas, the demand for housing is on the upswing. Due to high construction costs and non-availability of land at preferred locations, people opt for apartments. Today’s upwardly mobile live and work in high-rise buildings with terraces and balconies overlooking the cityscape.Moreover, designing the high rise structure for wind and earthquake loads help us gaining thorough knowledge regarding these loads as consideration of these loads is a must while designing a high rise structure in a earthquake prone area.

USAGE OF THE PROJECT IN OUR CAREERS:

REFERENCES..A.K CHOPRA for earthquake loads.RCC design by N.PILAI.Structural Analysis by hibbelerRCC design by A.K Gupta