The pre-burried component welding method is adopted for joint fixing between the bay of GIS and the foundation.However

there are defects in this method

such as long period of construction

more difficulty

high cost

difficult in afterwards change etc.This article advocates the chemical anchor as a new type of fixing method between the GIS and the foundation.Take the indoor single-busbar GIS as an example

first the mechanics model in all the arrangement methods is built up and calculated.The result shows that 10 anchor bolts will be needed for fixing in the gravity of GIS

center line of busbar and center of local control cabinet if in the most dangerous situation.Finally

through the comparison of construction technology

joint strength

the cost

etc.with the traditional welding method of pre-buried components

the chemical anchor fixing method can satisfy the strength requirements.Meanwhile

there are lots of merits in this method

such as simple for design and constructions

low cost and easy to change in future maintenance.