Alves21
Structural
- Mar 4, 2020
- 16
Hello, everyone!
I am designing an endplate to be anchored on a concrete reinforced column with chemichal anchors. I am evaluating shear on the direction shown in attached picture (column height direction).
I have two analysis situation
(Situation 1)
According to ACI 318 for shear parallel to an edge I have this:
(c) For shear force parallel to an edge, Vcb or Vcbg shall be permitted to be twice the value of the shear force determined from Eq. (17.5.2.1a) or (17.5.2.1b), respectively, with the shear force assumed to act perpendicular to the edge and with ψed,V taken equal to 1.0.
I made this consideration in Profis software and the result is fine for the Concrete Breakout Strength of Anchor in Shear.
(Situation 2)
If I consider the column as having an edge even if far away I will end up in
17.5.2.4
Where anchors are located in narrow sections of limited thickness such that both edge distances ca2 and thickness ha are less than 1.5ca1, the value of ca1 used for the calculation of AVc in accordance with 17.5.2.1 as well as for the equations in 17.5.2.1 through 17.5.2.8 shall not exceed the largest of:
(a) ca2 /1.5, where ca2 is the largest edge distance
(b) ha /1.5
(c) s/3, where s is the maximum spacing perpendicular to direction of shear, between anchors within a group
And considering this aproach, my verification will Fail.
My doubt is if in this situation I can ignore the edge and proceed as in (situation 1)
I am designing an endplate to be anchored on a concrete reinforced column with chemichal anchors. I am evaluating shear on the direction shown in attached picture (column height direction).
I have two analysis situation
(Situation 1)
According to ACI 318 for shear parallel to an edge I have this:
(c) For shear force parallel to an edge, Vcb or Vcbg shall be permitted to be twice the value of the shear force determined from Eq. (17.5.2.1a) or (17.5.2.1b), respectively, with the shear force assumed to act perpendicular to the edge and with ψed,V taken equal to 1.0.
I made this consideration in Profis software and the result is fine for the Concrete Breakout Strength of Anchor in Shear.
(Situation 2)
If I consider the column as having an edge even if far away I will end up in
17.5.2.4
Where anchors are located in narrow sections of limited thickness such that both edge distances ca2 and thickness ha are less than 1.5ca1, the value of ca1 used for the calculation of AVc in accordance with 17.5.2.1 as well as for the equations in 17.5.2.1 through 17.5.2.8 shall not exceed the largest of:
(a) ca2 /1.5, where ca2 is the largest edge distance
(b) ha /1.5
(c) s/3, where s is the maximum spacing perpendicular to direction of shear, between anchors within a group
And considering this aproach, my verification will Fail.
My doubt is if in this situation I can ignore the edge and proceed as in (situation 1)
