Framework arch structure applicable to channel landslip treatment on irrigated area of expansive soil area

Abstract

The invention discloses a framework arch structure. The framework arch structure consists of frameworks and arch circles, wherein the frameworks are arranged in a channel; each framework consists of aframework column, a framework beam and a longitudinal press beam, wherein every five frameworks as a whole body are designed into an expansion joint; the frameworks are made of C25 reinforced concrete; each arch circle adopts a three-hinged-arch structure and is made of C20 concrete precast concrete; M7.5 cement mortar is poured between the arch circles and the framework parts and between the arch circle and another arch circle. According to the scheme, pressure of landslide mass is borne by utilizing the arch circles arranged on the two sides of the channel; when a common effect of verticalreinforced concrete columns of an arch circle support as well as a top framework beam and a bottom framework beam connected with the arch circle support acts upon landslide thrust force having a structure as same as the structure of the opposite bank, the whole structure adopts support beams and support columns as stress structures. Based on hydraulic calculation, under the conditions that the design of flow is ensured and water depth and channel gradient are invariable, the concrete size of the framework arch structure is determined.

Description

technical field [0001] The patent of the invention relates to a frame arch structure suitable for landslide control of irrigation areas in expansive soil areas. Background technique [0002] At present, in irrigation areas in expansive soil areas, engineering measures for channel landslide control mainly include soil material replacement, box culvert structure, and reinforced soil treatment. Soil material replacement treatment is mainly to completely remove the sliding body on the side slope of the channel, remove it below the sliding surface, replace it with non-swellable clay, control the optimal water content in the soil, and backfill it to the design standard section by layering compaction. The construction of this scheme is simple, but the amount of excavation and filling is large, the project investment is large, and the quality of the filling construction is not easy to guarantee, and landslides are prone to occur in the later stage; the box culvert structure is compl...

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Problems solved by technology

[0003] These three engineering measures have large project investment, large amount of earthwork, long construction period, difficult construction quality assurance, difficult construction management and post-maintenance

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