Construction method of large-span channel in artificial landscape mountain

Abstract

The invention discloses a construction method of a large-span channel in an artificial landscape mountain. The construction method comprises the following steps that 1, pile foundations are constructed on two sides of a large-span channel; 2, a bearing platform foundation pit is excavated, a pile head is chiseled away, a bearing platform structure is poured, and the bearing platform structure anda pile foundation are reliably connected; 3, a formwork for pouring a bridge abutment / pier wall is erected; 4, combined steel beams are hoisted in place, and the combined steel beams and the bridge abutment / pier wall are welded through embedded steel plates to form a stress main frame; 5, based on the main steel beams of the combined steel beams, bottom formworks and side formworks for pouring a surface layer concrete structure are built; 6, the surface layer concrete structure is poured, and the main steel beams are connected with the surface layer concrete structure; 7, fully-wrapped waterproofing is performed along the top of the surface layer concrete structure and a soil facing surface of the bridge abutment / pier wall; 8, EPS light materials are gradually piled up along the two sidesof the channel needing a large span; and 9, planting soil is filled to a designed elevation. The prefabricated combined steel beams are adopted to form the framework, and the influence of constructionon an existing road is reduced.

Description

technical field [0001] The invention relates to the technical field of large-span passage construction, in particular to a construction method for large-span passages in artificial landscape mountains. Background technique [0002] In urban landscaping projects, long-span passages can meet the needs of traffic connections at both ends of the scenic spot. [0003] In structural engineering, the concept of long-span passages is not clearly defined. From experience, a single tunnel with more than 3 lanes (generally about 12m) is basically considered a long-span. At the current technical level, when the span exceeds 25m, the conventional reinforced concrete slab structure gradually becomes uneconomical. When the span exceeds 30m, the structural form must be changed to a steel composite or arch structure to meet the force requirements. [0004] However, the passages are often located on existing roads, so construction always has a considerable impact on the operation of existing...

AI Technical Summary

Problems solved by technology

At the current technical level, when the span exceeds 25m, the conventional reinforced concrete slab structure gradually becomes uneconomical. When the span exceeds 30m, the structural form must be changed to a steel combination or arch structure to meet the force requirements

[0004] However, the location of the channel is often located on the existing road, so the operation of the existing road will always be greatly affected during construction.

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