TheOddOne
The A340 has 2 legs attached to the wings and one centreline body leg, like the DC10-30 and variants. Again, this is required to support departure masses but the 2 main legs can support landing stresses - I've witnessed that, too, no problems.
Actually the A340 can operate with the centre bogie MEL’d with the appropriate weight penalties applied for both take-off and landing. Engineers just tuck it up into its well and deactivate it.