Construction Technology of Trestle Bridge Across Foundation Pit Enclosure and Supporting Beams

Abstract

The invention discloses a construction process of a trestle stretching across a foundation pit support diagonal bracing beam. The construction process includes the following steps of determination of a trestle scheme, earth cutting to the elevation, construction of a foundation bed, construction of a trestle bearing platform, diagonal bracing beam elevation actual measurement, determination of the bridge floor elevation, bridge body construction, bridge body concrete maintenance, formwork removal, bridge deck protective barrier installation and road pond slag backfilling. Stretching over the combined type steel diagonal bracing beam is achieved through a bridging mode, reinforced concrete bearing platform shear walls serve as piers, reinforced concrete slabs serve as a bridge body, and the obtained trestle serves as an earthwork transport channel. The construction process of the trestle stretching across the foundation pit support diagonal bracing beam facilitates construction, and is short in construction period, passing is convenient, the obtained trestle serves as the earthwork transport channel, earthwork car loads and the combined type steel bracing beam are not related, safety performance is good, the transport problem of earthwork stretching over the combined type steel diagonal bracing beam is well solved, the construction period is short, and economic benefits are greatly increased.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a cross-spanning foundation pit enclosure which adopts a bridging method to span a pair of combined steel beams, a reinforced concrete cap shear wall as a bridge pier, and a reinforced concrete slab as a bridge body as an earthwork transportation channel. Construction technology of trestle bridge with braced beams. Background technique [0002] For multi-storey basements, the traditional enclosure design system adopts the combined form of SMW construction method piles + section steel supports + prestressed fish-belly steel beams; the foundation pit is divided into the east half area and the west half area by the combined section steel opposite beams in the north-south direction of the foundation pit , the basement area is large, and the amount of earthwork that needs to be excavated is large, so the earthwork transportation construction has a serious imp...

AI Technical Summary

Problems solved by technology

[0002] For multi-storey basements, the traditional enclosure design system adopts the combined form of SMW construction method piles + section steel supports + prestressed fish-belly steel beams; the foundation pit is divided into the east half area and the west half area by the combined section steel opposite beams in the north-south direction of the foundation pit , the basement area is large, and the amount of earthwork that needs to be excavated is large, so the earthwork transportation construction has a serious impact on the entire construction process

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