A double-stage reinforced soil abutment with densely arranged reinforcements and its construction method

Abstract

The invention discloses a double-stage reinforced soil abutment with closely arranged reinforcement materials, comprising a road-bridge connection support system, an upper-level reinforced soil abutment system and a lower-level reinforced soil abutment system, and the road-bridge connection support system includes a road surface structure , bridge superstructure, closely spaced reinforced soil approaches and pedestals, the pavement structure is located on top of the bridge superstructure and closely spaced reinforced soil approaches, and the bridge superstructure and closely spaced reinforced soil approaches are arranged in parallel; the superior The reinforced soil abutment system is set on the upper part of the lower reinforced soil abutment system, and the reinforcements inside both are closely arranged. The invention also provides a construction method of the double-stage reinforced abutment. The beneficial effects of the present invention are: the tight arrangement of reinforcements can effectively increase its bearing capacity, the improvement of the previous single-stage abutment into a double-stage abutment can effectively reduce the overturning moment, improve the external stability of the structure, and the use of anchoring devices can effectively Improve stability, reduce deformation during service, and lay the foundation for the expansion of its application range.

Description

technical field [0001] The invention relates to the technical field of highway bridge construction, in particular to a double-stage reinforced soil abutment with closely arranged reinforcement materials and a construction method thereof. Background technique [0002] Reinforced earth abutments are widely used in transportation infrastructure. However, the current reinforced soil abutments are difficult to balance in terms of stability and construction convenience. For example, Chinese patent document CN202881845U discloses a flexible reinforced soil abutment for highway bridges, which can only be used in projects with low heights. To ensure that it has sufficient bearing capacity, if the distance between the pedestal and the wall is too large, too much space will be wasted in practice; Chinese patent document CN204676593U discloses a super-high integral steel-plastic grid reinforced earth abutment retaining wall structure, Although it can be used in higher projects, its bea...

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Problems solved by technology

However, the current reinforced soil abutments are difficult to balance in terms of stability and construction convenience. For example, Chinese patent document CN202881845U discloses a flexible reinforced soil abutment for highway bridges, which can only be used in projects with low heights. To ensure that it has sufficient bearing capacity, if the distance between the pedestal and the wall is too large, too much space will be wasted in practice; Chinese patent document CN204676593U discloses a super-high integral steel-plastic grid reinforced earth abutment retaining wall structure, Although it can be used in higher projects, its bearing capacity is relatively limited, and a lot of space is wasted, which indirectly increases the cost of land. In addition, its structure is too complicated and the construction is difficult

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