Construction method for erecting land heavy end cross beam without support or large crane

The invention discloses a construction method for erecting a land heavy end cross beam without a support and a large crane. The method comprises the steps: manufacturing and transporting an end crossbeam in a segmented mode; arranging an anchoring hanging bracket system on site; hoisting and anchoring the left side end cross beam section by using a deck crane, then hoisting and anchoring the right side end cross beam section, and finally hoisting the middle end cross beam section and welding the middle end cross beam section with the left and right sections into a whole to finish end cross beam erection. Erecting of the high-pier heavy-duty end cross beam can be completed under the condition that no pier side support is arranged and no large ground crane is matched, and the method has theadvantages that the pier side support and the large ground crane do not need to be input so that input of temporary steel structures and mechanical equipment can be saved, the engineering progress isfast, the construction dif