7/25/2019 Analysis of Pile Groups With Rigid Caps

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7/25/2019 Analysis of Pile Groups With Rigid Caps

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Program ssumptions and imitations*

#+ ,he Pile roup .or'sheets assume a minimum of 2 piles and a maimum of either 250 750 !""0 or 4""piles for a pile group+

2+ ,his program uses the 1elastic method1 of analysis0 assuming that the pile cap is in fact 1rigid10 so thatthe applied loads are linearly distriuted among the piles+ common 1rule-of-thum1 is to assume a pilecap thic'ness e3ual to least #/#" of the longest dimension (length or .idth) of the pile cap+ ll piles areassumed to e ertical0 and of e3ual sie and length (stiffness)+ &attered piles are 6, permitted+ ,hetops of all piles are assumed at the same leel+

!+ ,his program assumes an orthogonal 8-9-: coordinate system+ ll piles and piers ;%, & locatedin the 1positie1 (#st) 3uadrant+ 16egatie1 pile or pier/loading location coordinates are 6, permitted+1>ight-?and->ule1 sign conention is used for all applied forces and moments at pier locations+

4+ ,he piles and piers/loadings can e numered in any desired order+ ?o.eer0 the user should ma'esure to either clear the contents of all spreadsheet cells that are not used for input or those cell aluesshould e input = "+ ll piles and piers/loadings ;%, & input in proper numerical se3uence .ith no1rea's1 in the numerical order of input data+

5+ ,his program does 6, include the .eight of the pile cap or piers in the calculation of the ertical pilereactions+ ?o.eer0 the total .eight of the pile cap and piers may e included y assuming an additional1ficticious1 pier located at the centroid of the pile cap plan area0 and applying the total .eight at that 1pier1location+

@+ ,his program does 6, chec' the actual calculated pile reactions (ertical and horiontal) against'no.n or gien allo.ale pile reactions for do.n.ard0 uplift0 or lateral cases+ ,his is done so that theetent of any acceptale oerstress is left up to the Audgement of the user+ ?o.eer0 in all cases thismust e chec'ed y the user+

7+ ,his program does 6, perform all of the necessary chec's for the eam-type shear or punchingshear for the pile cap0 as this must e done independently y the user+ ?o.eer the 1$orner Pile %hear1

.or'sheet can e used to estimate the re3uired pile cap thic'ness and suse3uently the pile cap .eightto e accounted for+

+ ,his program does 6, chec' the fleural re3uirements of the pile cap0 as this must e doneindependently y the user+

B+ ,his program contains numerous Ccomment oes .hich contain a .ide ariety of informationincluding eplanations of input or output items0 e3uations used0 data tales0 etc+ (6ote* presence of aCcomment o is denoted y a Cred triangle in the upper right-hand corner of a cell+ ;erely moe themouse pointer to the desired cell to ie. the contents of that particular 1comment o1+)

Calculation Reference

ACI Manual