Page 290 - Bridge and Highway Structure Rehabilitation and Repair

CHAPTER 6 APPLICATIONS OF BRIDGE DESIGN AND RATING METHODS 265

Table 6.9 Sample spreadsheet for check bolts for strength I, III, and V load combinations (continued).
Strength I / III Axial Force Diagonal Horizontal SMSQ Resultant

AASHTO LRFD A b F ub N s R n
Sec. 6.13.2.2 Eq.2

= 0.38 A F N 0.6 120 1 72
R n b ub s
Red. Factor = 0.8 57.6
())

()) R n 1 57.6

If ()) R /R > 1 OK 19.1704
n
t
Slip Resistance Slip-Critical
R = R/N, ()) = 1
t
AASHTO LRFD K h K s N s P t R n

Sec. 6.13.2.8 Eq.1
= K K N P 0.6 0.33 1 39 7.722
R n h s s t
Tables 6.13.2.8 Table 2 Table 3 Table 1

Sec. 6.5.4.2 ()) ()) shear

()) R n 1 7.722
If ()) R /R > 1 OK 2.5700
n
t
Strength V Axial Force Diagonal Horizontal SMSQ Resultant
LOCATION 1
2 0.5
2
R = (H + V ) 1.5 2.6 9.01 3.0017
LOCATION 2 10 15 325 18.0278
LOCATION 3 15 10 325 18.0278

N = NO. OF BOLTS 6
FORCE/BOLT = R/N 3.0046

Strength V Slip Resistance Slip-Critical
= R/N, ()) = 1 3.0046
R t
AASHTO LRFD K h K s N s P t R n
Sec. 6.13.2.8 Eq.1

= K K N P 0.6 0.33 1 39 7.722
R n h s s t
Tables 6.13.2.8 Table 2 Table 3 Table 1

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