Support pile top crown beam structure and construction technology thereof

The invention discloses a top beam structure at the top of a support pile, the top beam structure comprises the support pile, concrete top beams are connected to the top of the support pile in a pouring manner, the concrete top beams and the support pile are in one-to-one correspondence, a steel top beam is connected between the adjacent concrete top beams, and the steel top beam is of a prefabricated steel structure. The construction technology comprises the following steps that S1, the support pile is poured, specifically, the top end of a reinforcement cage of the support pile is fixedly connected with a positioning block, and one end of the positioning block is poured into the support pile; s2, a connector is installed, specifically, the connector is fixedly installed on one side of the positioning block; s3, steel crown beam installation, wherein the steel crown beams are hoisted, and the two ends of each steel crown beam are installed and connected with the two connectors correspondingly; s4, concrete t