The invention relates to the technical field of
building construction, and discloses a water tank preloading technology of a huge open-frame girder
steel tube full support. The water tank preloading technology includes the following operation processes of full support erection, preloading area selection, preloading load determination, water tank erection, monitoring point arrangement, monitoring instrument setting,
water storage gradation loading, preloading monitoring, settlement stabilization, drainage and unloading, support template adjustment and next procedure executing. By using simple equipment which is always available at the site and self-configuring a water tank, the flexibility, simpleness and convenience are achieved, the working efficiency is high, and compared with a traditional preloading method, the construction period can be shortened by 1 / 3 or above; and the
processing cost is low, operation is easy and convenient, the cost is saved, compared with adopting a precast
reinforced concrete block preloading method, the investment can be saved by 70-80%, compared with sandbag stacking preloading, the investment is saved by 30-40%, and compared with site reinforced material preloading, the investment can be saved by 20-30%, and the preloading method has the advantages of less construction equipment, high construction efficiency, local material using, easy manufacturing, environment-friendly construction, reasonable actual stress state in the simulated pouring process, and the like.