A prefabricated staggered joint assembled segmental split column for underground structures

Abstract

The invention discloses a segmental split column for prefabricated staggered seam assembly of underground structures. The split column is composed of a long-segment prefabricated reinforced concrete column, a short-segment prefabricated reinforced concrete column, a rubber cushion at the end of the column, a rubber cushion between columns and a prestressed steel strand. The long-segment prefabricated reinforced concrete columns are stacked sequentially along the height direction, and a short-segment prefabricated reinforced concrete column is placed at one end to form a split column unit. The four split column units are combined in two rows and two columns to form an integral column. The segmental prefabricated reinforced concrete columns in each split column unit are separated from each other by rubber cushions. Under the earthquake, the prefabricated reinforced concrete columns of each segment are freely opened and closed at the rubber cushion. The mutual staggering of the seams is beneficial to the horizontal shear resistance of the members. The invention is installed in the key part of the underground structure to reduce the damage of the underground structure under the action of earthquake.

Description

technical field [0001] The invention relates to the construction field of underground structure engineering, in particular to a segmental split column used for prefabricated staggered seam assembly for underground structures, and belongs to the field of anti-seismic technology of prefabricated subway stations. Background technique [0002] In recent years, with the continuous advancement of the urbanization process in various countries around the world, scholars at home and abroad have gradually realized that the development and utilization of underground space will become an important development direction. Underground structures have been more and more widely used in various fields such as urban construction, transportation, national defense projects, and water conservancy projects, such as railway tunnels, subway projects, underground shopping malls, and air defense projects. Practice shows that the 21st century is the century of underground space development and utilizat...

AI Technical Summary

Problems solved by technology

The above-mentioned prefabricated staggered joint segmental split column is used to replace the traditional cast-in-place integral reinforced concrete column, which overcomes the defect of insufficient horizontal deformation capacity of the traditional reinforced concrete column under high axial compression

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