Ring box supporting enclosure system capable of doubling as retaining wall and construction method for ring box supporting enclosure system

Abstract

The invention discloses a ring box supporting enclosure system capable of doubling as a retaining wall. The ring box supporting enclosure system comprises a retaining structure, concrete supporting structures, wherein the retaining structure is arranged by surrounding a foundation pit and is used for bearing transverse load of the foundation pit, and the concrete supporting structures are annularly arranged in the retaining structure and are used for balancing the transverse load borne by the retaining structure; each concrete supporting structure includes ring box beams correspondingly arranged at the two sides in the retaining structure, and concrete waist beams used for connecting the ring box beams; the concrete waist beams are arranged next to the retaining structure; and supporting members are arranged in each concrete supporting structure. The invention further discloses a construction method for the ring box supporting enclosure system capable of doubling as the retaining wall.The ring box supporting enclosure system not only has high engineering applicability, high structural reliability and high safety, but also has few construction steps and good economic performance.

Description

technical field [0001] The invention belongs to the technical field of supporting structures, and in particular relates to a ring frame supporting enclosure system which can double as a retaining wall and a construction method thereof. Background technique [0002] With the rapid development of urban rail transit, the construction sequence of subway stations continues to increase. The site selection has gradually increased year by year from the early laying under the existing urban roads to the planned roads and within the plots. As the planned roads have not been implemented in time (the plot has not been developed), in the construction area with hilly and mountainous landforms, there is a large height difference in the construction site, and a large amount of excavation is required for the site to be leveled to a uniform elevation, resulting in a large project investment and can be implemented Sex is low. [0003] The existing technology often adopts methods to deal with ...

AI Technical Summary

Problems solved by technology

[0004] 1. When the existing technology adopts a separate retaining structure, such as a buttress-type retaining wall, the construction stage needs to be sloped and excavated to excavate the construction retaining wall working face, and then the retaining wall is implemented; the use stage needs to backfill the soil behind the wall complex process and large project investment; due to the separation of the retaining structure and the enclosure structure, there is a height difference in the site, which affects the access and use of the circular driveway and large equipment (shield machine)

If the pile-anchor structure is adopted, it is necessary to keep away from the proposed construction enclosure structure as far as possible during the construction stage to ensure the width of the passive earth pressure zone in the embedded section of the pile body, so as to maintain the overall stability of the soil retaining pile. Large, such as when the stable rock (soil) layer is buried deep, the length of the anchor cable (rod) will be too large, the project safety will be low and the project investment will be large; in the use stage, the anchor cable (rod) is an underground pollutant. It has a great impact on the construction plot and surrounding plots, and needs to be recycled or excavated after use, resulting in an increase in project investment, otherwise it does not meet the requirements of green engineering

[0005] 2. In the prior art, when the retaining structure is added to the enclosure structure, if a cantilever retaining wall is used, the construction stage needs to be sloped and excavated to excavate the construction face of the retaining wall, and then the retaining wall is implemented; the wall needs to be backfilled during the use stage After the soil, the process is complicated

Since the cantilever retaining wall structure should not exceed 5m, it is not suitable for site conditions with large height differences, and the engineering adaptability is poor

[0006] 3. When the existing technology adopts the overall earthwork excavation, if the excavation of the entire site is used to reach the elevation of the field, the excavation volume is large, and the spoil needs to be transported to a unified area, resulting in a long construction period and large project investment; If there are existing buildings and structures within the required range, but they are not included in the scope of demolition, the plan cannot be implemented, and the adaptability of the project is poor.

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