To resolve the problem of heavy self-weight

easy cracking and low load-bearing capacity of ordinary concrete poles

on the basis of centrifugal molding process

the optimal mix ratio of coarse aggregate UHPC was designed by adjusting the centrifugal speed

acceleration and time. Six UHPC annular poles with coarse aggregate were made by variable speed centrifuge

thus enhancing the production efficiency. The failure mode

crack resistance and bearing capacity were investigated by four-point bending static loading with steel fiber content and reinforcement ratio as parameters. The test results show that the failure mode of the pole can be divided into three stages: elasticity

crack development and failure. With the increase of steel fiber content

the number of main cracks of the pole gradually decreases

while the number of minor cracks increases accordingly. Steel fiber hindered the development of cracks to a certain extent

and its flexural capacity increased by 42.6%. With the increase of reinforcement ratio

the number of main cracks of the pole is not much different

but the length and width of the cracks are obviously reduced. The resistance to deformation is strengthened

and the flexural bearing capacity is increased by 63.8%. The calculation results of flexural bearing capacity of RPC pole is close to the experimental value

but relatively safe and conservative. However

with the increase of reinforcement ratio and steel fiber content

the theoretical calculation value is closer to the experimental value.The calculation method of the flexural bearing capacity of the activated powder concrete pole is similar to that of the test results.