I'm sorry, I realised on coming back to the thread that perhaps it was not the world's most tactful question.
IME, I agree with you. It is a circular thing that isn't easy to break free from.
It sounds like she's hurt that you are spending so much time away from home, whether that be for work or going out to the pub.
I guess she realises why you are working the hours you do?
Does she work too?
She may look forward to you coming home at the end of the day and spending some time with her.
I'm not saying this will work in all cases, but I have found a kiss or cuddle and "How was your day?" broke the ice and opened up the opportunity for a bit of conversation.
I don't know who cooks the meals, maybe a change of routine once in a while would be appreciated. EG a takeaway once a week, although I appreciate prices going up etc... may impact this.
Ditto, but maybe you could go out together, perhaps to the pub or maybe to the flicks (if there are any left!).
Weekend walks are good, too. If you have a dog, even better!
I've been in this situation before and baby steps, little changes bit by bit, have helped improve things.