Critical conditions were analyzed from both structure stability theory and the load test for braced dome, supplying theoretical reference for the application of braced dome on large-scale oil storage tank.

At present,the petroleum requirement of the market is larger and larger,and the number of the ribbed vault storages which are expansile or newly-built is increasing,then the volume of the single tank is to be built lager and larger,and the large-scale petroleum storage tank is a direction.

Analysis on the structure design of the large floating roof tank;