Underground integrated pipe corridor structure and sinking type construction method

Abstract

The invention relates to an underground integrated pipe corridor structure and a sinking type construction method. The underground integrated pipe corridor structure comprises side walls and a middlewall, the tops of the side walls and the middle wall are separately and fixedly connected with a roof, the bottoms of the side walls and the middle wall are separately and fixedly connected with a bottom plate, a back cover is arranged on the lower part of the bottom plate, a roof frame beam is arranged in the roof, and a bottom plate frame beam is arranged in the bottom plate. The underground integrated pipe corridor structure and the sinking type construction method can omit the process of excavation and support of a foundation pit, reduce the construction procedure, reduce the constructioncost, and reduce the construction period.

Description

technical field [0001] The invention belongs to the field of municipal technology, and in particular relates to an underground comprehensive pipe gallery structure and a sunken construction method. Background technique [0002] With the improvement of our country's economic strength, the urban underground comprehensive utility corridor as the "vessel" and "nerve" has increasingly become the main content of municipal infrastructure construction. [0003] The overburden height of the comprehensive pipe gallery is generally between 2-3.5 meters, and the buried depth is mostly between 6-8 meters. Because the covering soil is relatively shallow, most projects are not suitable for shield tunneling, pipe jacking and underground excavation. At present, the main construction method is open-cut construction, including open-cut and cast-in-place and open-cut and prefabricated comprehensive pipe gallery. However, the inventor believes that there are problems such as difficulty in cons...

AI Technical Summary

Problems solved by technology

According to different situations, the foundation pit adopts support forms such as grading, soil nails, steel sheet piles, cast-in-place piles, and engineering piles. No matter what support form is adopted, the construction difficulty will be increased

[0005] 2) Long construction period: The integrated pipe gallery should go through construction procedures such as excavation, support, precipitation, construction of the main body of the pipe gallery, and backfilling. The construction process is relatively long, which will have a long-term impact on the travel of urban citizens

[0006] 3) High cost: Due to the improvement of environmental protection awareness in recent years, the country has strict requirements for dust control and water and soil conservation. Therefore, the price of earthwork excavation and backfill materials has doubled accordingly; open excavation construction requires Excavation of soil larger than the volume of the comprehensive pipe gallery increases the construction cost;

[0007] 4) Environmental protection issues: due to the large excavation range of the foundation pit of the comprehensive pipe gallery, the damage to the original soil is relatively large

At the same time, most of the backfilling needs to transport plain soil, sand, stone chips, gravel and other materials, which has a great impact on the natural environment;

[0008] 5) Safety issues: The construction of the main body of the comprehensive pipe gallery must be completed in the foundation pit, and the safety risk is relatively large during the construction process

Images