Construction method for sand-filling subgrade

Construction method for sand-filling subgrade

  • CN 102,747,662 A
  • Filed: 07/18/2012
  • Published: 10/24/2012
  • Est. Priority Date: 07/18/2012
  • Status: Active Application
First Claim
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1. the job practices of a sand-filled subgrade;

  • Relate to the sand-filled subgrade structure;

    Said sand-filled subgrade structure is made up of core, bound edge rendzinas, closedtop layer, road structure;

    Said closedtop layer, road structure are set in turn in said core top, and said bound edge soil is supported in said core both sides, it is characterized in that;

    said job practices has following steps at least;

    The cleaning of roadbed table soil is removed, and the clay side of abandoning that wherein produces banks up subsequent use;

    In its both sides the gutter is set along the roadbed direction in said roadbed bottom;

    Vertical, the horizontal french drain of roadbed substrate;

    Bury sedimentation and displacement observation device underground;

    Bound edge rendzinas making, back-up sand making, and both construct simultaneously, and said bound edge rendzinas adopts the said clay side of abandoning in the said step (a);

    Said back-up sand paving process in the step (d), said bound edge rendzinas paving process are carried out the degree of compaction test;

    The construction of closedtop layer making.

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