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A control method and structure for uneven settlement of highway soft soil subgrade

A technology of soft soil roadbed and control method, which is applied to roads, roads, buildings, etc., can solve the problems of uneven settlement of road soft soil roadbeds, slag roadbeds not used, etc., to avoid longitudinal and horizontal cracking diseases, save construction funds, The effect of saving maintenance funds

Active Publication Date: 2018-03-20
NINGBO COMM PLANNING INST CO LTD
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Problems solved by technology

[0003] The present invention aims at the problem that the slag subgrade of the existing newly-built earth-rock mixed filling does not adopt effective control of the integrity of the stress deformation state of the subgrade, and provides a method for controlling the uneven settlement of the soft soil subgrade of the highway

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  • A control method and structure for uneven settlement of highway soft soil subgrade
  • A control method and structure for uneven settlement of highway soft soil subgrade
  • A control method and structure for uneven settlement of highway soft soil subgrade

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Embodiment Construction

[0026] The present invention will be further elaborated and illustrated below in conjunction with the accompanying drawings and specific embodiments. The technical features of the various implementations in the present invention can be combined accordingly on the premise that there is no conflict with each other.

[0027] Such as figure 1 As shown, a control structure for uneven settlement of highway soft soil embankment includes a reinforced concrete frame, a geogrid and an elastic guide soil arch cushion; the reinforced concrete frame has grids arranged in a rectangular array, and steel bars A layer of geogrid is laid on the concrete frame, and an elastic guiding soil arch cushion in the shape of a spherical segment is fixed on the geogrid above each sash, and the outer edge of the bottom surface of the elastic guiding soil arch cushion is supported on the sash beam superior. In the reinforced concrete frame, cement mixing piles are drilled at the lower part of each sash ...

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Abstract

The invention discloses a control method and structure of non-uniform settlement of a highway soft soil roadbed. The method comprises: (1) piling a cement mixing pile into the highway soft soil roadbed; (2) pouring a steel reinforced concrete framework at the top of the cement mixing pile, wherein the steel reinforced concrete framework is internally provided with frame cells which are arranged in a rectangular array; (3) spreading one layer of geogrids on the steel reinforced concrete framework; (4) fixing one elastic soil guide arch cushion layer with a spherical segment shape on one geogrid above each frame cell, and supporting outer edges of bottom surfaces of the elastic soil guide arch cushion layers on geogrid beams; (5) spreading graded crushed stones on the geogrids and the elastic soil guide arch cushion layers; (6) filling a slag roadbed layer by layer to a designed height. By adopting the control method and structure, the integrity of a stress deformation shape of the newly built slag roadbed filled with a soil and stone mixture can be controlled, and road surface cracks caused by the non-uniform settlement is prevented.

Description

technical field [0001] The invention belongs to the field of construction methods, and in particular relates to a control method and structure for uneven settlement of road soft soil subgrades. Background technique [0002] The problem of uneven settlement of the soft soil subgrade of the existing highway is more prominent, especially the soil-rock mixed subgrade, which is reflected in the longitudinal and transverse cracking of the pavement; The core problem of uneven settlement of highway soft soil roadbed is to control the integrity of the stress and deformation state of the roadbed. How to economically solve the problem of overall control of the stress and deformation state of the newly built roadbed in coastal areas with many mountains and less land and rich slag can avoid repeated problems of longitudinal and transverse cracking diseases on the pavement, saving both construction funds and maintenance funds. Contents of the invention [0003] The invention aims at th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/04
CPCE01C3/04
Inventor 朱汉华陈孟冲沈健
Owner NINGBO COMM PLANNING INST CO LTD
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