Prestressed pipe pile upright

Abstract

The invention discloses a prestressed pipe pile upright. The prestressed pipe pile upright comprises a steel lattice post, a pipe pile and a pipe pile core insert. The pipe pile core insert is coaxially and fixedly connected with the lower end of the steel lattice post and fixedly inserted into the pipe pile in an annular column shape. The lower end of the steel lattice post is fixedly connected with the upper end of the pipe pile core insert. The upper end of the pipe pile core insert is connected with a pipe pile end plate on the top of the pipe pile. The lower end of the pipe pile core insert is fixedly provided with a layer board. A pouring space is formed by the layer board and the inner side gap, above the layer board, of the pipe pile and is filled with expansive concrete in a poured mode. The prestressed pipe pile and the steel lattice post are combined together to serve as an upright system for a deep foundation pit horizontal support, the system is high in construction speed, expenses are reduced, large moment of inertia is provided, the function of improving the whole rigidity is achieved, and the superiority that the steel lattice post is connected with the support at the upper portion of a foundation pit and penetrates through a bottom board for waterproof construction is fully played at the same time.

Description

technical field [0001] The invention relates to a column in a support system in a deep foundation pit, in particular to a prestressed pipe pile column, which can also be applied to a tower crane combined foundation placed in a deep foundation pit. Background technique [0002] In recent years, with the rapid economic development, land intensive development has received more and more attention, and the application of ultra-deep underground space has also increased, especially in urban dense areas, where deep and large foundation pits are used widely used. For deep foundation pits, as a measure to ensure the safety of deep foundation pit support and minimize the impact on the surrounding environment-inner support is widely used. [0003] As the internal support system, steel structure or concrete structure is generally used. For large-scale foundation pit systems, due to the possible tension of the first-floor support system, and for super-large foundation pits, trestle brid...

AI Technical Summary

Problems solved by technology

[0011] (1) Using bored piles for construction, the corresponding economic costs are relatively high, and mud pollution will be generated during the construction process

[0012] (2) The verticality of the steel lattice column is difficult to control, and the direction of the section of the steel lattice column is difficult to control, so that when the support beam is constructed, the steel bars of the support beam cannot pass through the steel lattice column, which will also affect the support and the steel lattice. The joint bearing of the lattice column has adverse effects, and at the same time, due to poor verticality control, the bearing capacity of the steel lattice column is greatly reduced, and some projects even need to be strengthened

[0019] (1) The connection node with the supporting beam is relatively complicated;

[0020] (2) It is difficult to construct the waterproof joint where the column passes through the bottom plate

However, it is more complicated to deal with waterproofing through the bottom plate

Images