Hidden retaining roadbed structure

Abstract

The invention discloses a hidden retaining roadbed structure, wherein a retaining wall(s) is / are arranged at one side or two sides of a rectangular region on a roadbed with a trapezoidal section and a plurality of consolidating piles are vertically arranged at intervals in the foundation soil which is arranged at the lower part of the rectangular region simultaneously. Furthermore, a pile block cushion course is arranged horizontally at the top of all consolidating piles. In the hidden retaining roadbed structure, the retaining wall(s) made from wrapped reinforced earth structures arranged in layers is / are arranged at one side or two sides of the rectangular region on the roadbed with a trapezoidal section. The influence range of road load can be limited within the retaining wall if the retaining wall is arranged in the influence range of the road load as the retaining wall has good quack-proof performance, thereby greatly reducing the reinforcement range of the foundation under the roadbed based on the guarantee of subsidence control effects so as to be capable of effectively reducing construction investment. Additionally, greening can also be conducted on side slopes to obtain better landscape effect without any change in the conventional trapezoidal section shape of the roadbed. Furthermore, the structure is convenient for maintenance and repair of road.

Description

technical field [0001] The invention belongs to the technical field of railway and highway subgrades, in particular to an implicit supporting subgrade structure. Background technique [0002] With the rapid development of railway passenger dedicated lines, high-speed railways and expressways, the investment in subsidence control of soft ground has accounted for a large proportion of project investment. There are many kinds of railway or highway subgrade structures commonly used at present, one of which is a retaining subgrade structure with retaining walls, and the other is a common subgrade structure with a trapezoidal cross section. figure 1 It is a schematic cross-sectional view of a retaining subgrade structure with retaining walls in the prior art. Such as figure 1 As shown, the cross-section of the subgrade 1 on this support-retaining subgrade structure is rectangular, and a retaining wall 2 is provided on both sides of the subgrade 1, and a plurality of reinforcemen...

AI Technical Summary

Problems solved by technology

Since this common roadbed structure needs to reinforce the whole range of the foundation at the lower part of the roadbed 3, that is, the reinforcement range is relatively large, so the engineering quantity and engineering investment are large.

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