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A Construction Method of Soft Foundation Treatment Technology for Existing Expressway

A technology of expressway and construction method, applied in infrastructure engineering, roads, roads, etc., can solve problems such as differential settlement of expressways, and achieve the effects of reducing embankment settlement, low cost, and short construction period

Active Publication Date: 2015-09-16
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art and solve the problem of differential settlement of operating expressways in soft soil areas under the action of vehicle cyclic dynamic loads, the present invention provides a construction method for the existing expressway soft foundation treatment technology

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  • A Construction Method of Soft Foundation Treatment Technology for Existing Expressway
  • A Construction Method of Soft Foundation Treatment Technology for Existing Expressway

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The protection scope of the present invention is not limited only to the description of this embodiment.

[0018] The structure after treatment using the construction method of an existing expressway soft foundation treatment technology in this embodiment is as follows figure 1 and 2 As shown, including the embankment 1 below the pavement layer 2, high-pressure jet grouting piles 4 are arranged in the embankment slope 11, and the hard soil layer foundation 9 and the soft soil layer foundation 8 on both sides below the embankment 1 have the same direction as the road surface layer 2. Consistent and parallel underground diaphragm walls 7, steel cage skeletons 10 are arranged at intervals in the underground diaphragm walls 7, prestressed steel strands 6 are stretched in the relative steel cage skeletons 9, and prestressed steel strands 6 An outer...

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Abstract

The invention discloses a construction method of the conventional expressway soft foundation treating technology. The construction method comprises the steps of pile lofting, construction of an underground continuous wall, stretching of a prestressed steel strand, disposing of high-pressure rotary jet piles in a rail road embankment, and the like. The construction method can effectively improve intensity of the conventional expressway soft foundation, and control post-construction settlement, has no influence on traffic of the conventional expressway, avoids cost generated by mass excavation and construction, and solves the technical difficulty of post-construction settlement of the conventional expressway soft foundation.

Description

technical field [0001] The invention relates to a method for strengthening the soft foundation of an expressway, in particular to a construction method of the existing technology for treating the soft foundation of an expressway. Background technique [0002] The expressway has very high requirements on the foundation, and after completion, it must achieve the service purpose of "fast, safe, economical and comfortable". If the road surface is rough and uneven, it will affect the comfort of driving and hinder the speed of driving, and the impact force caused by the vehicle jump caused by the low concave part of the road surface or the height difference of the bridge head will further aggravate the uneven road surface, forming a vicious circle, roadbed disease The probability will be further increased, which will affect driving safety and cause huge economic losses, so the roadbed must be reinforced. At present, the commonly used subgrade reinforcement methods mainly include ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01C3/04E01C21/00E02D5/46
Inventor 孔纲强孙广超孙学谨李春红
Owner HOHAI UNIV
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