The first subway station is capped in the nation's first soft land floor

Correspondent Shi Yongqi

On June 21, with the completion of the last section of the concrete of the top plate, the main project of Hainan Road Station, Shaoxing Metro Line 2, which was built in the 24th Bureau of China Railway, was capped 10 days in advance compared with the planned period. Functional subway stations were capped smoothly.

Hainan Road Station is an underground four -floor four -span steel concrete box -type structure island -type island stations. The station has a parking and check -out function. It is also the parking lot of Line 2. It is also the largest station in Line 2. The structure of the station is complicated. The station has a total of 6 windows, 514 prefabricated columns, and 13 safety entrances and exits. In addition, except for the No. 1 wind pavilion, all the subsidiary projects are on the top board of the main structure. Structure, so the main structure of the station has a subsidiary structure function, and similar functions and structural solutions are rare.

As the nation's first subway station with parking and maintenance function in the country, the main pit of the main body of the station is 467.5 meters long, the standard section is 36.2 meters wide, and the floor is 49.7 meters to 50.99 meters. It is a typical case of ultra -wide, narrow and long deep -founded pit under the geological conditions of soft soil silt, and close to the city's main roads. It is similar to the construction experience that can be used for construction. It is a great challenge for construction.

In order to reduce the deformation of the soft soil foundation pit and smoothly promote the implementation of the project under the premise of ensuring safety, the project department improved the excavation scheme of the long, deep foundation pit split pits by optimizing the pits of long, deep foundation pits to improve A number of measures such as vertical transportation methods have laid a solid foundation for the main project of the station. The prestressed steel combination system used for this site is the first time that the Shaoxing subway field is used, which not only saves costs, but also reduces the cycle of the original concrete support.

The "Simultaneous excavation implementation plan of the narrow and deep foundation pit" proposed by the construction team has greatly reduced the earth's excavation cycle, and has the significance of reference and guidance for subsequent subway base pits for acceptance and acceptance. Provide strong parameters and experience support for the design and practice of the second phase of Shaoxing Metro.

Since it is the bidding section of the last bidding entry, the concept of "starting is a big job" was established at the beginning of the project, facing various challenges, and overcome the difficulties.

Faced with the relocation and reform of pipelines such as 10 kV overhead electric power lines, DN1400 to water pipelines such as water pipelines, dredging of fish ponds, and land acquisition and demolition, the project department actively coordinated with the property rights units of various pipelines to continuously optimize the pipeline relocation and relocation of pipeline relocation The design scheme of the station uses the method of demolition, sidelines, and construction of construction. In just more than 60 days, all preliminary engineering tasks have been completed in the field.

In order to promote high efficiency and high -quality construction, the project department starts from system management such as standardization, standardization, refinement, and informatization. Get the affirmation of the superior unit.

The main body of the Hainan Road Station also means that the main projects of the 2nd stops and 2 sects within the scope of the contract are completed. In the next step, all participants will continue to solidly promote the remaining work, complete the follow -up targets of subsequent nodes high -quality and efficiently, and continue to contribute to the construction of rail transit construction in Shaoxing.

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