Fan foundation outer ladder extension method

Abstract

The application discloses a fan foundation outer ladder extension method in the technical field of engineering construction assistance, and comprises the following steps: S1, calculating the height of the original ladder butt joint hole to the ground according to the flood control requirement; S2, obtaining the distance L2 between the original ladder butt joint hole and the bottom surface of the ladder vertical rod, and presetting the height L3 of the lowest point of the new welded ladder to the ground; S3, welding the new welded ladder on site, the vertical distance of the new welded ladder is L1-L2-L3, the original ladder inclination angle is alpha, and the horizontal distance of the new welded ladder is (L1-L2-L3) / tan alpha; and S4, erecting the first ladder foundation below the ladder vertical rod of the original ladder and the second ladder foundation below the lowest position of the original ladder, erecting the one end of the new welded ladder on the second ladder foundation and the other end of the new welded ladder on the third ladder foundation. The method can extend the ladder, solve the problem that the original ladder cannot be directly applied to the high fan foundation, and is implemented through on-site direct construction, so that the problems of high time and high transportation cost caused by the redesign and production of the ladder are solved.

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