Social Interaction tracking is a user action so using jQuery click event tracking is your best bet to capture these events. For example, if the Twitter icon has a class attribute with a value of "twitter", you could use the following to track the icon click: jQuery('.twitter').mousedown(alert("hi"));
Next you will need to fire an event for the action. You can read about GUA events here: https://developers.google.com/analytics/devguides/collection/analyticsjs/events
Specifically you should be using this format:
ga('send', 'event', 'category', 'action', 'label');
So for example:
ga('send', 'event', 'button', 'click', 'twitter');
To implement within Tealium, you can use the "jQuery onHandler" extension. Set the jQuery Selector to ".twitter" (no quotes), Trigger On "mousedown", set the Tracking Event to "Custom", and then paste the GA example above in the input window. This should help get you what you need.
Please let me know if this is helpful.