Catenary post expanded foundation structure for railway in embankment retaining wall section

The utility model discloses a catenary post expanded foundation structure for a railway in an embankment retaining wall section to effectively solve the problem that a catenary expanded foundation is difficultly arranged in the existing shoulder retaining wall section. The catenary post expanded foundation structure comprises an embankment filling body filling a rock-soil body of a foundation, and a shoulder retaining wall arranged on the outer side of a shoulder of the embankment filling body, wherein the shoulder retaining wall is provided with a shoulder retaining wall opening in the catenary expanded foundation; the outer end of the catenary expanded foundation is seated on the shoulder retaining wall opening, and the inner end of the catenary expanded foundation is arranged in the embankment filling body; a catenary post is arranged on the catenary expanded foundation.