Combined member for co-constructing deep soft foundation river way and river embankment and construction method

Abstract

The invention relates to the technical field of civil construction engineering and particularly relates to and discloses a combined member for co-constructing a deep soft foundation river way and a river embankment. The combined member comprises an embankment subjected to foundation treatment, a river bank retaining wall built at a slope toe of an embankment slope, and a river bed dug at the outer side of the retaining wall; a river way is composed of the retaining wall and the river bed; a foundation adopts a solidification water discharging method or flexible pile compound foundation; anti-sliding piles are buried below a slope body region of the embankment slope and an embankment earth shoulder. The invention further discloses a construction method of the combined member. The construction method sequentially comprises the following steps: partially unloading the embankment after the embankment is pre-pressed; piling the anti-sliding piles, an inclinometer and a retaining wall pile and building the river bank retaining wall; digging the river way and monitoring slope deformation; recovering embankment filling and the like. With the adoption of the combined member and the construction method thereof, the river way is very close to the embankment foundation and the land is saved; the foundation can be treated by using the solidification water discharging method and the construction cost is low; the slip risks can be effectively reduced and the deformation coordination problem between the members can be solved well; the combined member has the advantages of economical efficiency, safety and environmental friendliness.

Description

technical field [0001] The invention relates to the technical field of civil construction engineering, in particular to a combined component used for co-construction of a deep soft foundation channel and an embankment next to a river and a construction method thereof. Background technique [0002] The coastal area has a lot of people and little land, the economy is developed, the river network and road network in the area are dense, and the land resources for engineering construction are very precious. In recent years, in order to save land and promote intensive use of land resources, road construction often changes rivers or irrigation canals to the foot of the embankment slope and follows the road. However, in coastal areas with very weak foundations, the construction of embankments along rivers is quite difficult, including a series of key technical problems. The interaction between foundation treatment of embankment along the river and the deformation of river refor...

AI Technical Summary

Problems solved by technology

However, in coastal areas with very weak foundations, the construction of embankments along rivers is quite difficult, including a series of key technical problems, such as the excavation of rivers can easily induce soil slope slippage, and the filling of embankments along rivers can also easily cause landslides, Interaction between foundation treatment of embankment along the river and deformation of river reforming structures and its deformation control problems, protection of river erosion, etc.

[0003] The existing technology generally excavates the river channel first, then places anti-slide piles, retaining walls, and fills the roadbed at places far away from the river. The advantage of this method is that it can reduce the impact of river channel excavation on the roadbed. The disadvantage is that : Due to the deep and soft foundation, the embankment will undergo great settlement and deformation. The impact of embankment sinking on the surrounding river bank will squeeze the retaining wall of the river bank, which is easy to cause deformation or landslide. In order to reduce deformation or landslide, fill in at this time Generally, piling can only be done under the entire road surface, which greatly increases the cost, and the river is far away from the roadbed, which cannot save land

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