I am simulating a sub-assemblage model of concrete with baseplate -bolt connection and with a column (I -section) at the top. The grade of concrete is M45. Lateral loading is applied on the column to study the failure pattern of bolts and base plates. But after the loading, the stress in concrete 352 MPa, particularly at the bolt holes. This much higher stress is possible ? What is indicates?. Attaching the material model and stress pattern for reference

Abaqus ​​​​​​​