Construction method for irregular floors with large span by utilizing high-strength steel strands

The invention discloses a construction method for irregular floors with large span by utilizing high-strength steel strands. The construction method comprises the following steps that: (1) after bottom reinforcing steel bar mesh sheets are bound at a formwork which is supported, a plurality of corrugated pipes which are in series connection are arranged; the corrugated pipes forms a tension hole channel and the steel strands pass through and are tied in the corrugated pipes; (2) non-prestressed reinforcement is arranged at the hogging moment bearing part of the floors; (3) the corrugated pipes and the steel strands are fixed at the formwork in a curve state which conforms to the design requirement; (4) the middle lap joint of the corrugated pipes is sealed, the specific position of the tension steel strand is marked and concrete is poured; and (5) after the concrete conforms to the design strength, the initial tensioning and the ultimate tensioning are performed, the elongation values of the steel strand is examined and sealing anchor and grouting are performed. The method provided by the invention can fully utilize the characteristic of large bearing capacity of high-strength steel strands and the construction process is simple, safe, economical and practical.