Waterfront embankment road edge water side broadening and heightening roadbed structure and construction method thereof

Abstract

The invention discloses a roadbed structure for broadening and heightening a waterfront embankment along a water side. The roadbed structure comprises a current earth-rock embankment roadbed; step steps formed on the upstream side slope surface of the current earth and rockfill embankment roadbed main body are excavated; permeable reinforced row body which is laid on the mudflat on the outer sideof the current earth and rockfill embankment roadbed main body; a first mud filling pipe bag edge body which is constructed above the permeable reinforced row body and is positioned below the normal water level; a second mud filling pipe bag edge body which is constructed on the side, close to the soil, of the first mud filling pipe bag edge body and located above the normal water level; and an embankment core filling soil which is filled among the steps, the permeable reinforced row body, the first mud filling pipe bag edge body and the second mud filling pipe bag edge body. The invention further discloses a construction method of the roadbed structure for broadening and heightening the waterfront embankment along a water side. The waterfront embankment road edge water side broadening andheightening roadbed structure and the construction method thereof have the advantages of the simple construction, strong practicability, the long service life, low process cost and the like.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a subgrade structure for widening and heightening a waterfront embankment along the water side and a construction method thereof. Background technique [0002] With the development of the economy, it is difficult to meet the increasing traffic demand on the dike crest roads along the river and along the river, so it is necessary to widen and heighten the dikes on the basis of the existing dikes. Due to restrictions such as inner buildings or land use, it is often necessary to pile up soil on the water side to widen. This scheme has the following defects: [0003] 1. Under the action of water flow and waves, the piled soil on the water side is easy to be washed away during the construction period, resulting in the instability of embankment roads; [0004] 2. The new subgrade is in the shape of an inverted trapezoid with a large top and a small bottom. Under ...

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Problems solved by technology

[0003] 1. Under the action of water flow and waves, the piled soil on the water side is easy to be washed away during the construction period, resulting in the instability of embankment roads;

[0004] 2. The new subgrade is in the shape of an inverted trapezoid with a large top and a small bottom. Under the action of the upper load, the subgrade is easy to slip towards the water side;

[0005] 3. There is a large difference in the additional stress generated by the filling at the old and new subgrades, and there is a large settlement difference, resulting in poor road surface flatness and cracks;

[0006] 4. Poor combination of new and old, the contact surface is prone to relative displacement, resulting in cracking of the pavement, and accelerated pavement damage under the action of freezing and thawing in winter cycles

[0007] The above problems will affect the normal operation of the project and endanger the safety of driving

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