Steel beam lower limit space submerged steel pipe pile pulling-out device and construction method thereof

Abstract

The invention relates to a steel beam lower limit space submerged steel pipe pile pulling-out device and a construction method thereof. The device comprises a cantilever crane, a winch, a sliding rail, a steel wire rope and a vibration hammer, the cantilever crane comprises a right vertical column, a left vertical arm, an upper horizontal arm and a lower horizontal arm, the sliding rail is arranged on the surface of a steel beam platform, the lower end of the right vertical column is clamped in the sliding rail, a first fixed pulley, a second fixed pulley and a third fixed pulley are sequentially mounted in the cantilever crane, one end of the steel wire rope is connected with the winch, the other end of the steel wire rope sequentially winds the first fixed pulley, the second fixed pulleyand the third fixed pulley and is connected with the vibration hammer, the third fixed pulley is fixed onto a slider, a guide rail is arranged on the lower horizontal arm, and the slider can slide along the guide rail and is locked at any position. According to the device, an improved cantilever crane and the pulleys are combined, stress directions are changed, a stress point is arranged on a bridge, a pile can be pulled by the winch on the bridge, and operation is more convenient.

Description

technical field [0001] The invention relates to equipment for pulling out steel pipe piles in water in a limited space under a steel beam and a construction method thereof. Background technique [0002] In the process of steel beam construction, after the completion of the lower piers and abutments, in order to meet the requirements of the bearing capacity during the hoisting and erection of steel beams, it is often necessary to drive a certain number of steel pipe piles under the steel beams in advance, and the erection of construction trestles A large number of steel pipe piles are also required as the foundation. For example, the Zhangpu Super Bridge has a total of about 1,550 steel pipe piles, and the maximum depth of penetration is 28m. A 100-ton crawler crane is required to meet the lifting requirements. The Hangzhou Bay Bridge has a total of 2,800 steel pipe piles, and the piles are directly pulled out by cranes. The calculated pile pulling force is also quite large, ...

AI Technical Summary

Problems solved by technology

The Hangzhou Bay Bridge has a total of 2,800 steel pipe piles, and the piles are directly pulled out by cranes. The calculated pile pullout force is also quite large, and the pile pullout efficiency is low

The above cases show that the traditional method of removing steel pipe piles in bridge construction is slow and expensive, and it is even more difficult to remove steel pipe piles in a limited space

[0003] At present, there are very few researches on pile extraction technology at home and abroad, and it is even more difficult to pull out piles in the limited space under the bridge. to use

Bridge construction, especially large bridge construction, uses a lot of temporary steel pipe piles. If they are all abandoned, it will cause a lot of waste of resources, increase capital investment, and cause shipping risks.

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