In short, yes you can. As long as the legs of the trampoline (or any other heavy object) aren’t sharp, then the artificial grass will remain in a healthy condition. To reduce the likelihood of indentation, you should ensure that the sub-base below the artificial grass surface has been properly installed. A deeper sub-base and thorough compaction will prevent this, even for objects that are very heavy! The same applies for outdoor furniture and paddling pools.
Should you decide to move the trampoline to another area of the garden or take it down completely, the artificial grass blades can be brushed back up using a regular brush. The same also applies to other playground equipment, such as swings and seesaws, as well as garden furniture, such as tables, chairs and benches. In fact, we recommend that you move the object around the garden periodically. Alternatively, use any offcuts you might have to put under the feet of the trampoline (much like you would do with your sofa on an indoor carpet). This will make it easier to brush the grass back up after it has been compressed by the object.
If you would rather not have the trampoline standing on the artificial grass surface, it’s possible to sink the trampoline into the ground and lay the turf around it. Sinking the trampoline into the ground also takes away the need for a safety net, with the artificial turf (which is now at the same level as the trampoline) lending itself to a suitably cushioned fall.