Construction method of splicing widening structure of new and old subgrade light soil based on prefabricated formwork

A technology of new and old roadbeds and construction methods, which can be used in basic structure engineering, roads, excavation, etc., can solve the problems of poor settlement, uneven settlement cracks and sliding shear planes of old roadbed slopes, and achieve the effect of fast construction.

Active Publication Date: 2019-03-19
江苏镇江路桥工程有限公司
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Problems solved by technology

However, for the widening construction of high embankment and subgrade in soft soil areas, the above measures are not enough. When the high embankment and subgrade are widened, the uneven settlement of the old and new subgrade is still relatively obvious, especially on the widening side, the settlement difference of the old subgrade slope is obvious, resulting in a sudden change point, where uneven settlement cracks and sliding shear surfaces are likely to occur

Method used

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  • Construction method of splicing widening structure of new and old subgrade light soil based on prefabricated formwork
  • Construction method of splicing widening structure of new and old subgrade light soil based on prefabricated formwork
  • Construction method of splicing widening structure of new and old subgrade light soil based on prefabricated formwork

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Embodiment Construction

[0033] In this embodiment, the prefabrication process requirements for prefabricated prefabricated side slope slabs, prefabricated side beams, etc., the construction technical requirements for light soil backfill, the construction process requirements for embankment piles, and the types of plants on the slope will not be described in detail. The implementation method of widening structure construction based on prefabricated template new and old subgrade light soil splicing.

[0034] figure 1 It is a schematic diagram of the splicing and widening structure of the new and old subgrade light soil based on the prefabricated formwork of the present invention, figure 2 It is a schematic diagram of the structure when the light soil of the old and new roadbeds spliced ​​and widened based on the assembled formwork in the present invention is not backfilled with light soil. image 3 It is a schematic diagram of the connection between the bottom of the prefabricated slope slab and the ...

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Abstract

The invention relates to a method for construction of a new and old roadbed light-soil splicing broadening structure based on a fabricated formwork. The method mainly comprises the following steps of construction preparing, embankment pile arranging, on-site poured sash beam and boundary beam construction, T-shaped anti-shear part and jacking installation, prefabricated side slope plate installation, steel bar net piece laying, light soil refilling, new road surface layer construction and green operation in side slope sash beam. According to the method for the construction of the new and old roadbed light-soil splicing broadening structure based on the fabricated formwork, juncture of new and old roadbeds of the embankment broadening structure is high in anti-shear capacity and good in stability.

Description

technical field [0001] The invention relates to a construction method for splicing and widening structure of old and new subgrades, in particular to a construction method for splicing and widening structure of old and new subgrades based on assembled templates, which can strengthen the joint strength of new and old subgrades and enhance the overall quality of subgrade and pavement Anti-deformation ability to prevent pavement cracking. It belongs to the field of highway engineering and is suitable for old road reconstruction and expansion projects, especially for high embankment road widening projects in soft soil areas. Background technique [0002] In recent years, with the rapid development of my country's economy, the traffic volume of highways has been increasing year by year, and the traffic volume of some highways is close to saturated traffic volume. In this regard, in order to meet the growing traffic demand and social development needs, road reconstruction and expan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/00E01C3/04E02D17/20
CPCE01C3/00E01C3/04E02D17/20E02D17/205
Inventor 赵秀娟李红卫刘林丰荣良朱蕊
Owner 江苏镇江路桥工程有限公司
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