Novel ultra-long latticed column

Abstract

The invention discloses a novel ultra-long latticed column comprising a vertical latticed column body. The vertical latticed column body is provided with a plurality of steel supports, steel bracketsand a water blocking plate. The bottom of the vertical latticed column body is fixed to a foundation pile. The vertical latticed column body and the foundation pile are embedded under the bottom faceof a foundation pit. The mechanical problem that during excavating of the large-section deep foundation pit, the ultra-long latticed column is likely to lose stability due to the fact that a steel support is long is solved. By additionally arranging the multiple steel supports, the calculation length of a press rod is reduced, and the bearing capacity of the press rod is improved; secondly, the possibility of over-limit supporting of the steel supports due to factors such as the weights of the steel supports is reduced; and finally, difficulties such as mounting and demounting of the ultra-long support are overcome. According to the novel ultra-long latticed column, construction is convenient, the safety of the overall structure is improved, and meanwhile the situation that underground water permeates into the foundation pit is welled controlled by adopting the water blocking plate.

Description

technical field [0001] The invention relates to the technical field of urban underground space construction, in particular to a novel ultra-long lattice column. Background technique [0002] Traditional lattice columns generally use longer steel supports as lateral restraints, which makes the structure prone to instability. At the same time, longer steel supports make the center of gravity of the structure out of the way, resulting in excessive disturbance of the support displacement and easy to exceed the limit. [0003] The invention solves the mechanical problems of super-long lattice columns during the excavation of large-section deep foundation pits, because the steel supports are long and easy to lose stability. Secondly, it reduces the possibility that the steel support will exceed the limit due to factors such as its own weight. Finally, it overcomes the difficulties of installing and disassembling the super long support. The invention not only facilitates constructi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of ultra-long lattice column, which solves the mechanical problems of the ultra-long lattice column during the excavation of large-section deep foundation pits, because the steel support is long and easy to lose stability. By adding multiple steel supports, Reduce the calculated length of the compression bar and increase the bearing capacity of the compression bar. Secondly, it reduces the possibility of the steel support being overrun due to factors such as its own weight. Finally, it overcomes the difficulties of installation and disassembly of the super-long support. The invention is convenient for construction and The safety of the overall structure is improved, and at the same time, the water retaining plate is used to well control the seepage of groundwater into the foundation pit

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