俄罗斯建筑行业的迅速发展，
俄罗斯大城市的点状式布局在地下工程范围需要使用创新的高技术方法。
由于该桩子的高可靠性，
在交通工程、桥梁建筑之中已经成为最受欢迎的方法。
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技术资讯
技术资讯
Technological stages:
1. An in-situ reinforced concrete guide wall is built across the future excavation. This guide wall outlines a desired slurry trench and guide excavation, required wall building accuracy, and prevents walls from collapsing.
2. A trench is designed for the wall. Excavation is done using a special clamshell-shaped hydraulic digger. During the excavation, the trench is filled with bentonite grout to prevent collapse.
3. Then the excavated trench is prepared for concreting. Specially prepared reinforcing cages are placed in a vertical position and lowered into the trench. After the reinforcement has been assembled, tremie pipes with receiving cones are lowered into the trench as well.
4. The trench is filled with concrete. The concrete displaces the bentonite grout, which is then pumped out and recycled. The rate of pour is 20 – 30 m3 per hour.
5. Soil excavation and wall shoring are done. The excavation is developed by making layers.
“Slurry wall” is a special technology which it makes possible to build underground constructions in a proximity to existing buildings and constructions as well as the working factories. Slurry walls make it possible to enclose excavations in restrained urban conditions and near communications. In most cases, slurry walls are the only solution when it comes to building underground constructions. Also, this technology is mainly used to restore historical monuments, develop underground space below water table to create ground water cutoff in hydraulic structure foundations. This type of enclosure is performed by extracting soil while the trench is kept filled with the bentonite grout. Then a reinforcing cage is lowered into the trench and the bentonite grout is replaced with concrete. This technology makes it possible to use the slurry wall as a bearing construction or as a construction to restrict groundwater flow to embedded structures.
1. An in-situ reinforced concrete guide wall is built across the future excavation. This guide wall outlines a desired slurry trench and guide excavation, required wall building accuracy, and prevents walls from collapsing.
2. A trench is designed for the wall. Excavation is done using a special clamshell-shaped hydraulic digger. During the excavation, the trench is filled with bentonite grout to prevent collapse.
3. Then the excavated trench is prepared for concreting. Specially prepared reinforcing cages are placed in a vertical position and lowered into the trench. After the reinforcement has been assembled, tremie pipes with receiving cones are lowered into the trench as well.
4. The trench is filled with concrete. The concrete displaces the bentonite grout, which is then pumped out and recycled. The rate of pour is 20 – 30 m3 per hour.
5. Soil excavation and wall shoring are done. The excavation is developed by making layers.
“Slurry wall” is a special technology which it makes possible to build underground constructions in a proximity to existing buildings and constructions as well as the working factories. Slurry walls make it possible to enclose excavations in restrained urban conditions and near communications. In most cases, slurry walls are the only solution when it comes to building underground constructions. Also, this technology is mainly used to restore historical monuments, develop underground space below water table to create ground water cutoff in hydraulic structure foundations. This type of enclosure is performed by extracting soil while the trench is kept filled with the bentonite grout. Then a reinforcing cage is lowered into the trench and the bentonite grout is replaced with concrete. This technology makes it possible to use the slurry wall as a bearing construction or as a construction to restrict groundwater flow to embedded structures.
优点
This method can be used in both firm and unstable water-bearing soils.
This technology is noise and vibration free which allows the construction works in the residential areas.
The equipment used in this technology minimizes the building site size and allows for working on smaller sites as well.
The performance reaches 200 running meters of piles per shift.
Injecting concrete under pressure makes the pile walls and lower end more solid. This all results in enhancing bearing capacity.
Building piles without soil decompression provides an opportunity to work close to the residential buildings.
As the auger bit produces less soil during the drilling process, it reduces the cost of drill cuttings transportation.
As piles have various diameters such as 450, 600, 800, 900, 1,000, and 1,200 mm and reach depths up to 29 meters, it becomes possible to solve all the problems related to the design and building of auger piles.
This technology is noise and vibration free which allows the construction works in the residential areas.
The equipment used in this technology minimizes the building site size and allows for working on smaller sites as well.
The performance reaches 200 running meters of piles per shift.
Injecting concrete under pressure makes the pile walls and lower end more solid. This all results in enhancing bearing capacity.
Building piles without soil decompression provides an opportunity to work close to the residential buildings.
As the auger bit produces less soil during the drilling process, it reduces the cost of drill cuttings transportation.
As piles have various diameters such as 450, 600, 800, 900, 1,000, and 1,200 mm and reach depths up to 29 meters, it becomes possible to solve all the problems related to the design and building of auger piles.