Reverse building method rear-inserting steel pipe column vertical positioning device and construction method thereof

Abstract

The invention relates to a reverse building method rear-inserting steel pipe column vertical positioning device and a construction method thereof. The reverse building method rear-inserting steel pipe column vertical positioning device comprises a crane, steel wire ropes and a hydraulic machine. The upper end of a steel pipe column extends out on the outer side of the hydraulic machine, and the lower end of the steel pipe column is open. Vibrators which are distributed symmetrically with the aspect of the axis of the steel pipe column are arranged on a column body extending out of the upper side of the hydraulic machine, and the vibrators are evenly distributed on the periphery side of the column body along the annular pipe column. A disturbance part is distributed on a lower end column body of the steel pipe column, and the lower end column body of the steel pipe column is further provided with a notch. In the construction process, it is guaranteed that the lengths of the two steel wire ropes are consistent and the two steel wire ropes are both in a tensioned state, a holding and clamping device of the hydraulic machine is used for accurately positioning the steel pipe column, the vibrators which are arranged in a paired mode are used for vertical adjusting until the verticality and positioning of the steel pipe column meet demands. The reverse building method rear-inserting steel pipe column vertical positioning device and the construction method thereof are prone to operation and vertical adjusting, precise in control, and particularly suitable for construction and mounting of steel pipe columns with large diameters and larger lengths.

Description

technical field [0001] The invention belongs to the field of building pile foundation construction, and in particular relates to a vertical positioning device for back-inserted steel pipe columns. Background technique [0002] The upside-down method has been widely used in the foundation engineering of various high-rise buildings and subways and other large-scale projects. As a permanent support, the steel pipe column becomes super large and long with the increase and deepening of the foundation pit, and the verticality of the steel pipe column The requirements are getting higher and higher, and the construction difficulty is also increasing. [0003] The verticality of the existing steel pipe column is generally controlled by its own weight or a simple manual adjustment device during the lowering process of the steel pipe column, but the steel pipe column with large diameter and long length cannot meet the design requirements at all. This traditional control steel pipe The...

AI Technical Summary

Problems solved by technology

[0003] The verticality of the existing steel pipe column is generally controlled by its own weight or a simple manual adjustment device during the lowering process of the steel pipe column, but the steel pipe column with large diameter and long length cannot meet the design requirements at all. This traditional control steel pipe The method of column verticality Even if there is a small deviation at the top of the steel pipe column, after a certain length of amplification (caused by the verticality deviation), it will also cause a large deviation to the bottom of the steel pipe column, such as a 25-meter-long steel pipe If the top of the column is offset by 5mm, the offset between the bottom of the steel pipe column and the pile center may reach 125mm

In addition, after the steel pipe column is misaligned, the post-remedial construction process will take a long time and the cost will be high

Images