Dumbbell type deeply-buried subway station and construction method thereof

Abstract

The invention discloses a dumbbell type deeply-buried subway station and a construction method thereof. The subway station is in a dumbbell shape and comprises circular open-cut vertical shafts located at the two ends and an underground excavation channel communicating with the two circular open-cut vertical shafts; each circular open-cut vertical shaft comprises a station hall layer located at the top, a plurality of equipment layers located in the middle and an end platform layer located at the bottom; and a longitudinally-extending platform layer, an ascending track and a descending track are arranged in the underground excavation channel, wherein the ascending track and the descending track are located on the two sides of the platform layer. The dumbbell type deeply-buried subway station and the construction method thereof have the advantages that (1) the combination form of the circular vertical shafts at the two ends and underground excavation of the platform layer at the bottom is adopted, stress of the circular vertical shafts in all directions is relatively balanced, a large number of internal supports can be saved, the engineering risk and the engineering cost are reduced, and the construction period is shortened; and (2) the station building function requirement and arrangement have good integrating degree with the structural form, and the large-size circular vertical shafts can meet the shield receiving and starting requirements and can be utilized as station function space.

Description

technical field [0001] The invention belongs to the technical field of subway stations, and in particular relates to a dumbbell-shaped deep-buried subway station and a construction method thereof. Background technique [0002] Based on the rapid development of rail transit in various parts of our country in recent years, the rail transit network of major first-tier cities has been formed, and the construction of other cities is also keeping pace. Coupled with the complexity of other underground transportation facilities and pipelines in the city, the elevation of rail transit lines has been further lowered, and the number of deep-buried stations has begun to increase. [0003] The existing deep-buried stations have the following problems: [0004] 1) Increase the excavation depth under the traditional rectangular station layout. Due to the unbalanced stress on the rectangular structure in all directions, the size of the station enclosure structure and the number of internal...

AI Technical Summary

Problems solved by technology

[0004] 1) Increase the excavation depth under the traditional rectangular station layout. Due to the unbalanced stress on the rectangular structure in all directions, the size of the station enclosure structure and the number of internal supports are on the rise, and the project cost of the station has also increased significantly. As a result, the construction time is long, the difficulty is high, the protection requirements are high and the risks are high, which affects the connection of the nodes of the whole line of the project;

[0005] 2) Although the size of the traditional rectangular station head shaft is small, it only meets the requirements of receiving and launching of shield tunneling, and the extra space cannot be used after the construction is completed

As the buried depth of the station increases, the function of the rail transit station is relatively constant, and the increase in the required building space is relatively small. Therefore, there is a considerable amount of invalid building space in the rectangular deep buried station.

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