Differential settlement adjusting device of column feet of iron tower and underpinning lifting construction method

Abstract

The invention discloses a differential settlement adjusting device of column feet of an iron tower and an underpinning lifting construction method. The differential settlement adjusting device of the column feet of the iron tower is characterized in that the column feet of the iron tower comprises a lower supporting stand column, and the adjusting device comprises a fixed stand column, a fixed column foot flange, a plurality of adjusting cushion blocks and a plurality of telescopic oil cylinders, wherein a plurality of evenly-distributed fixed anchor bolts are fixedly connected to the inner part of the fixed stand column. According to the differential settlement adjusting device of the column feet of the iron tower, after differential settlement of the column feet of the iron tower occurs, the column feet of the iron tower can be rapidly lifted and adjusted, so that the multiple column feet of the iron tower are always in the same horizontal plane, and the structure is kept stable; the differential settlement adjusting device of the column feet of the iron tower has pressure-bearing and anti-pulling functions, can provide large jacking force and can bear large anti-pulling force in the lifting process of the column feet; after the column feet are adjusted to the set height, fixing is convenient, and long-term efficient operation is kept; the differential settlement of a high and large iron tower foundation in an area with large wind power can be effectively adjusted, and the differential settlement can be repeatedly adjusted according to the settlement condition.

Description

technical field [0001] The invention belongs to the technical field of iron tower column foot and foundation transformation, and in particular relates to an iron tower column foot uneven settlement adjustment device and an underpinning lifting method. Background technique [0002] Existing signal or power transmission tower structures generally have four tower feet, and mostly adopt the load-bearing form of stepped independent foundations and columns, with good strength, rigidity and stability. However, in recent years, with the increasing breadth and depth of underground space development, the foundation of the existing iron tower will settle under the surrounding disturbance, and the footings of multiple iron towers will show uneven settlement, which will lead to the structural internal force and deformation of the upper iron tower increase, affecting safe use. [0003] When the iron tower settles unevenly, it is necessary to adjust its foundation or column foot to restor...

AI Technical Summary

Problems solved by technology

[0009] 2) The existing uneven settlement rectification device seldom takes into account the possible overturning risk of the column foot during the deflection correction process, and the safety is low

For example, in the gear lifting and deviation correction device in CN106703091B, relying on a single tooth column for weighing, its pull-out resistance and bending strength are insufficient

In the compression spring lifting device in CN106760903A, during the release process of the compression spring height, the lock nut is loosened, which cannot provide pull-out resistance

[0010] 3) The existing uneven settlement correction device is mainly aimed at small iron towers, and it is difficult to adapt to large iron towers with high height and heavy weight

The construction cost of large-scale iron towers is high, the construction is difficult, the construction period is long, and the operation needs to be maintained, which is difficult to interrupt

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