Seminar Ppt-sayooj Old

7/24/2019 Seminar Ppt-sayooj Old

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SEISMIC RESPONSE OF

MASONRY BUILDINGS WITHSLIDING SUBSTRUCTURE

SAYOOJ S

B120701C

S7 B BATC


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CONTENTS

IMPROVING THE STRENGTH OF THE STRUCTURE

BASE ISOLATION

MATHEMATICAL IDEALISATION

INTERPRETATION OF RESULTS

CONCLUSION


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INTRODUCTION

MAINLY USED IN RESIDENTIAL BUILDINGS

VERY BRITTLE IN NATURE

MASONRY STRUCTURES ARE VERY WEAK T

EARTHQUAKE FORCE


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ADVANTAGES OF MASONRY BUILDINGS

LESS FORMWORK

EASY AVAILABILITY OF MATERIALS

THERMAL COMFORT

FIRE RESISTANCE

MORE NOISE CONTROL

LESS SKILLED LABOUR

ECONOMICAL

EASY ALTERATIONS


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TYPES OF FAILURES

OUT OF PLANE FAILURE

SHEAR FAILURE

SEPERATION OF WALL AT JUNCTIONS

FAILURE OF MASONRY PIERS BETWEEN OPENINGS

OTHER FAILURES


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OUT OF PLANE FLEXURE FAILURE


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SHEAR FAILURE


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SEPERATION OF WALL AT JUNCTIONS


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FAILURE OF MASONRY PIERS BETWEEN OPENING


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LOCAL FAILURES


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SEPERATION OF ROOF FROM WALLS


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METHODS TO INCREASE SEISMIC PERFORMA

ARCHITECTURAL DESIGN FEATURES

QUALITY OF CONSTRUCTION ANDMAINTENANCE

HORI%ONTAL BANDS

VERTICAL BANDS


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ARCHITECTURAL DESIGN FEATURES

SHAPE SI%E

SIMPLICITY AND

SYMMETRY IN PLANAND ELEVATION

2 STOREYS & CEMENT MORTAR

1 STOREY & LIME OR MUD MO

BUILDING HEIGHT

LIGHTER ROOFS ARE PREFERABLHEAVY ROOFS

SHEETED ROOFS ARE BETTER THROOFS

ROOFS


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FLOOR ELEMENTS SHOULD HAVE

FULL BEARING ON THE WALLFLOORS

SHOULD BE AS SMALL ANDCENTRALLY LOCATED

OPENING INWALLS

SMALLER ROOMS WITH

SUPPORTED WALLS

ENCLOSEDSPACE


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BOX ACTION IN MASONRY BUILDINGS


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FORCE TRANSFER


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DOORS AND WINDOWS


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QUALITY OF CONSTRUCTION ANDMAINTENANCE

GOOD QUALITY OF BUILDING MATERIALS & MORTARAND BUILDING UNITS OF GOOD STRENGTH

PROPER BOND SO AS TO BREAK VERTICAL JOINTS INWALLS

CONSTRUCTION OF WALLS SHOULD BE TRULYVERTICAL

PROPER CONTINUITY AT CORNERS AND WALL

JUNCTIONS

ENSURE PROPER WALL CONSTRUCTION

CONTROL ON OVERALL DIMENSIONS AND HEIGHTS


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HORI%ONTAL BANDS

GABLE BAND

ROOF BAND

LINTEL BAND

PLINTH BAND


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WHY HORI%ONTAL BANDS ARE NECESSARY

PROVIDE OUT OF PLANE BENDING RESISTANCE TO THE WAL

REDUCE UNSUPPORTED VERTICAL HEIGHT OF THE WALL

LINTEL BAND IS THE MOST IMPORTANT

GABLE BANDS ARE EMPLOYED IN BUILDINGS WITH SLOPED

ROOFS

PLINTH BANDS ARE USED IN THE CASE OF UNEVEN

SETTLEMENT OF FOUNDATION SOIL

ACTION OF LINTEL BAND


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ACTION OF LINTEL BAND


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FAILURE OF A BUILDING WITH NO HORI%ONTAL BA


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NO DAMAGE


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VERTICAL BANDS

RESTRICT CRACKS AT THE CORNERS

FORCES SLENDER MASONRY PIERS TO UNDERGOBENDING INSTEAD OF ROCKING

PREVENT X&CRACKING OF MASONRY PIERS

PREVENT HORI%ONTAL SLIDING


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DIFFERENT LEVELS IN MASONRY BUILDING


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ROCKING OF MASONRY PIERS


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HORI%ONTAL SLIDING

CRACKING DUE TO NO CORNER REINFORCEM


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CRACKING DUE TO NO CORNER REINFORCEM


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X&CRACKING OF MASONRY PIERS


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BASE ISOLATION

B'() *(+,'-*+. *( +.) +/ -0) +(- *), ')6-) ()*(

67+-)-*+. ((-)( *. )'7-089':) 67+.) '7)'(;

I- *-* )(().-*',

*(+,'-*.< -0) (-79-97) /7+ 6+-).-*',, '.


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R)9) *.-)7'-*+. >)-)). (-79-97) '. , 0*0 *67+)( *-( 7)(6+.() -+ '. )'7-089':)


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ISOLATION WITHOUT DAMPING


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FIXED BASE BUILDINGBASE ISOLATEDBUILDING

PRINCIPLE OF BASE ISOLATION


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PRINCIPLE OF BASE ISOLATION

REDUCING THE STIFFNESS

INCREASING THE NATURAL PERIOD OF SYSTEM

PROVISION OF INCREASED DAMPING TOINCREASE THE ENERGY DISSIPATION IN THESYSTEM

SUITABILITY OF BASE ISOLATION


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SUITABILITY OF BASE ISOLATION

T0) (9>(+*, +)( .+- 67+9) ' 67)+*.'.) +/ ,+.6)7*+


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FIXED BASE VS ISOLATED BASE STRUCTURE

TYPES OF ISOLATORS


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TYPES OF ISOLATORS

N'-97', R9>>)7 B)'7*.


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ELASTOMERIC ISOLATORS

T0)() '7) /+7) +/ 0+7*+.-', ,')7( +/ .'-97', +7

(.-0)-* 79>>)7 *. -0*. ,')7( >+.) >)-)). (-)),

6,'-)(;

T0) (-)), 6,'-)( 67)).- -0) 79>>)7 ,')7( /7+

>9,


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P,'*. ),'(-+)7* >)'7*.*,*- >9- .+

(*


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A ,)'&79>>)7 >)'7*.< *( /+7) +/ ' ,)' 6,9

/+7)&--) *.-+ ' 67)&/+7) 0+,) *. '. ),'(-+)7*

>)'7*.+--+ (-)), 6,'-)(? -0*:)7 -0'. -0

*.-)7.', (0*(? '7) 9() -+ '++'-) +9.-*.

0'7'7); T0) ).-*7) >)'7*.< *( ).'() *. +)

79>>)7 -+ 67+*) ).*7+.).-', 67+-)-*+.;


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SLIDING ISOLATORS

T0) ()+. +(- ++. -6) +/ *(+,'-*+. (

(,**.< ),)).-( >)-)). -0) /+9.'-*+. '. >

(-79-97);

I. -0*( -6) +/ I(+,'-*+. ((-)? -0) (,**.< *(6,'

+.-7+,,) > 0*


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SPHERICAL SLIDING ISOLATOR


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S60)7*', (,**.< *(+,'-*+. 9()( >)'7*.< 6'( -0'- 0') '

97) (97/') '. ,+&/7*-*+. '-)7*',( (**,'7 -+

T)+.;

D97*.< '. )'7-089':) -0) >9*,*.< *( /7)) -+ (,*) >+-0

0+7*+.-',, '. )7-*',, +. -0) 97) (97/')( '.

*,, 7)-97. -+ *-( +7*


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ISOLATOR LOCATIONS

T0) 7)89*7)).- /+7 *.(-',,'-*+. +/ ' >'() *(+,'-*+

((-) *( -0'- -0) >9*,*.< >) '>,) -+ +

0+7*+.-',, 7),'-*) -+ -0) 9*,*.< 0'( ' >'()).- -0). -0) +6-*+.( '7) -

*.(-',, -0) *(+,'-+7( '- -0) -+6? >+--+ +7 *&0)*'()).-( +,9.( '. ',,(


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BASE ISOLATION IN REAL BUILDINGS


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BASE ISOLATION IN REAL BUILDINGS

S)*(* *(+,'-*+. *( ' 7),'-*), 7)).- '. )+,*.

-)0.+,+


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BASE ISOLATION IN INDIA

I. I.*'? >'() *(+,'-*+. -)0.*89) '( 7(- )+.(-7'-)

'/-)7 -0) 1##3 K*,,'7* M'0'7'(0-7' E'7-089':);

T+ (*.9*,*.9*,- *-0 79>>)7 >'() *(+,'-+7( 7)(-*.< +

0'7 9*,- *-0 >'() *(+,'-*+

-)0.*89);

A,, )7) >7*: '(+.7 >9*,*.


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APPLICATIONS


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APPLICATIONS

B'() *(+,'-*+. 67+*)( '. ',-)7.'-*) -+ -0

+.).-*+.',? ) >'() )(*9*,*.'() (-79-97);

MATHEMATICAL IDEALI%ATION


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MATHEMMODEL


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INPUT

C+)*).- +/ /7*-*+.

C+)*).- +/ *(+9( '6*.)-)). >+--+ '(( '. >'()

PHASE 2& S,**.< +/ >+--+ '(( >)+--+ '(( *( (-+66) >9- -+6

+.-*.9) -+ *>7'-)


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C+)*).- +/ -0) *(+9( '6)7

S67*.< +.(-'.-

T+6 '((

A>(+,9-) '),)7'-*+. +/ -0) -+6 '(( *. &*7)-*+.

A>(+,9-) '),)7'-*+. +/ -0) -+6 '(( *. &*7)-*+.

+)*).- +/ /7*-*+.

L'-)7', 7),'-*) *(6,')).-( +/ '(()( *.


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L'-)7', 7),'-*) *(6,')).-( +/ '(()( *. &

*7)-*+. 7)(6)-*),

L'-)7', 7),'-*) *(6,')).-( +/ '(()( *. &

*7)-*+. 7)(6)-*),

R),'-*) ),+*-*)( +/ '(()( *. &*7)-*+.

7)(6)-*),

R),'-*) ),+*-*)( +/ '(()( *. &*7)-*+.

7)(6)-*),

M'(( 7'-*+

PHASE 1


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F+7) +)(.- +)7+) -0) /7*-*+.', 7)(*(-'.)

B+--+ '(( +)( *-0 >'()

S(-) >)0')( '( ' -+ )


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F+7) +)7+)( /7*-*+.', 7)(*(-'.)

S,**.< +/ >+--+ '(( >)


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S,**.< +/ >+--+ '(( *( (-+66) >9- -+6 '(( +.-*.

-+ *>7'-)

E89'-*+. +/ +-*+. *( (') '(


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S+,) .9)7*',, > R9.


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E=)- +/ +)*).- +/ /7*-*+.

E=)- +/ -*) 6)7*+

E=)- +/ '(( 7'-*+

E=)- +/ *(+9( '6*.9*,*.

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