An alternative (or complementary to eq alone) approach is to put a compressor on the bass with the compressor side-chain triggered by a send from the kick.
Set the attack so it's slow enough to duck the bass during the kick's impact and initial transients with a pretty fast release. Threshold/ratio need to be set to whatever it takes to get the bass out of the way for the desired time and sound. As with most compression the correct settings will depend on the job in question, the desired effect etc. so it's a case of using your ears.
If the kick is busy and the compression is too wallowing or pumping it can be worth loading a drums VSTi and setting up a kick-only MIDI track that triggers the VSTi kick on the main beats you really need the kick to stand out on. Use a pre-fader send on the VSTi audio track to trigger the compressor side-chain instead of the "real" audio bass drum. The VSTi track fader should be set to silent so the VSTi isn't heard in the mix at all, but only controls the compressor on the bass channel. With a bit of tweaking of the MIDI velocities etc. you can get quite fine control over the compressor, and have it duck varying amounts as required even if the "real" drum is a constant volume.
Another trick is to use a VSTi to double/layer the kick drum to it covers a wider audio range. Say a low, thuddy or boomy drum layered with a brighter one with noticeablehigher frequency beater click.