Safety of Concrete and Masonry Structures under Unusual Loadings
In the paper the behavior of selected brittle materials and structures (concrete and masonry) subjected to explosive loadings is discussed. For concrete the accepted Cumulative Fracture Criterion (CFC) is exposed. It describes the degradation of the mater
- PDF / 16,662,046 Bytes
- 425 Pages / 439 x 666 pts Page_size
- 87 Downloads / 252 Views
&,60&2856(6$1'/(&785(6
6HULHV(GLWRUV 7KH5HFWRUV *LXOLR0DLHU0LODQ )UDQ]*5DPPHUVWRUIHU:LHQ -HDQ6DOHQoRQ3DODLVHDX
7KH6HFUHWDU\*HQHUDO %HUQKDUG6FKUHÁHU3DGXD
([HFXWLYH(GLWRU 3DROR6HUDÀQL8GLQH
7KHVHULHVSUHVHQWVOHFWXUHQRWHVPRQRJUDSKVHGLWHGZRUNVDQG SURFHHGLQJVLQWKHÀHOGRI0HFKDQLFV(QJLQHHULQJ&RPSXWHU6FLHQFH DQG$SSOLHG0DWKHPDWLFV 3XUSRVHRIWKHVHULHVLVWRPDNHNQRZQLQWKHLQWHUQDWLRQDOVFLHQWLÀF DQGWHFKQLFDOFRPPXQLW\UHVXOWVREWDLQHGLQVRPHRIWKHDFWLYLWLHV RUJDQL]HGE\&,60WKH,QWHUQDWLRQDO&HQWUHIRU0HFKDQLFDO6FLHQFHV
,17(51$7,21$/&(175()250(&+$1,&$/6&,(1&(6 &2856(6$1'/(&785(61R
'$0$*(0(&+$1,&6$1' 0,&520(&+$1,&62)/2&$/,=(' )5$&785(3+(120(1$,1 ,1(/$67,&62/,'6 (',7('%< *(25*(=92"@ > B @ > B @ >B @
>"@ >B @ >B @ >B @
$OO WKH PDWULFHV DSSHDULQJ LQ HTXDWLRQV DQG DUH UHSUHVHQWDWLRQV RI IRXUWKUDQNWHQVRUV7KHPDWULFHV >B @ DQG >B @ DUHUHSUHVHQWDWLRQVRIWKHIRXUWK
UDQNHODVWLFLW\WHQVRUDQGLWVHIIHFWLYHFRXQWHUSDUW7KHPDWULFHV >" @ DQG >" @ DUH WZR GLIIHUHQW UHSUHVHQWDWLRQV RI WKH IRXUWKUDQN JHQHUDOL]HG GDPDJH WHQVRU FRUUHVSRQGLQJWRWKHVFDODUGDPDJHYDULDEOH " ,WLVVHHQIURPHTXDWLRQV DQG WKDWERWK >"@ DQG >"@ DUHGHILQHGLQWHUPVRIWKHUHGXFWLRQRIWKH
HODVWLFVWLIIQHVVDVZDVWKHFDVHZLWK " 2QH FDQ DOVR GHILQH D IRXUWKUDQN GDPDJH WHQVRU E\ WDNLQJ WKH DYHUDJH RI >"@ DQG >"@ DVIROORZV
>"@
>"@ >"@
ZKHUH >"@ LV WKH PDWUL[ UHSUHVHQWDWLRQ RI WKH QHZ JHQHUDOL]HG IRXUWKUDQN GDPDJH WHQVRU 6XEVWLWXWLQJ HTXDWLRQV DQG LQWR HTXDWLRQ DQG VLPSOLI\LQJRQH REWDLQV WKHIROORZLQJH[SOLFLWH[SUHVVLRQIRU >"@
>"@
>B @>B @
>B @
>B @ > @
ZKHUH > @ LV WKH PDWUL[ UHSUHVHQWDWLRQ RI WKH IRXUWKUDQN LGHQWLW\ WHQVRU 1H[W RQH VWXGLHV WKHUHODWLRQVKLSEHWZHHQWKHIRXUWKUDQNGDPDJHWHQVRUV >"@ DQG > @
*=9R\LDGMLV%'HOLNWDVDQG3,.DWWDQ
$FWXDOO\ RQH ZLOO VWXG\ WKH UHODWLRQVKLS EHWZHHQ >" @ DQG > @ RQ WKH RQH
KDQGDQGEHWZHHQ >" @ DQG > @ RQWKHRWKHUKDQG,QWKLVLQYHVWLJDWLRQRQH ZLOOXVHWKHJHQHUDOL]DWLRQVRIWKHHODVWLFFRQVWLWXWLYHUHODWLRQVRIHTXDWLRQV DQG DVIROORZV V B H
^ ` > @^ `
^V ` >B @^H `
ZKHUH ^H ` DQG ^H ` DUHWKHYHFWRULDOUHSUHVHQWDWLRQVRIWKHVWUDLQWHQVRUDQGWKH HIIHFWLYH VWUDLQ WHQVRU UHVSHFWLYHO\ 7KH UHODWLRQV ZLOO EH REWDLQHG IRU WKH WZR FDVHVRIWKHK\SRWKHVLVRIHODVWLFVWUDLQHTXLYDOHQFHDQGWKHK\SRWKHVLVRIHODVWLF HQHUJ\ HTXLYDOHQFH 2QH FDQ UHZULWH WKH GHILQLWLRQV RI HTXDWLRQV DQG LQWKHIROORZLQJPRUHDSSURSULDWHIRUP
>B @ > @ >"@ >B @
>B @ >B @ > @ >"@
+\SRWKHVLVRI(ODVWLF6WUDLQ(TXLYDOHQFH ,QWKLVFDVHWKHJHQHUDOL]DWLRQRIHTXDWLRQ EHFRPHV
^H ` ^H `
6XEVWLWXWLQJHTXDWLRQV
Data Loading...
