Construction method of large-span concrete dome structure

The invention relates to a construction method of a large-span concrete dome structure. The method comprises the following steps: firstly, concrete dome structure construction is divided into first, second, third, fourth, fifth and sixth construction sections for concrete pouring; secondly, deformation is observed, specifically, four observation points are made on outer molds in four directions ofthe dome, and a special person is arranged to observe the plane displacement of a dome formwork and the settlement of a frame body during concrete pouring; thirdly, construction joints are arranged,specifically, a wooden tenon is placed at each construction joint, and an internal and external height difference is formed at the construction joints; and fourthly, maintaining is performed, specifically, in order to reduce water loss and plastic cracking of concrete, wet linen cloth should be used to cover the concrete after initial setting of the concrete, and water should be poured in time sothat the concrete can dissi