What is the reinforced concrete sheet pile?
Reinforced concrete sheet piles are not just individual sheet pile components, but a composite pile body formed by sinking reinforced concrete sheet pile components. It is a foundation pit enclosure structure that is easy to factoryize and assemble.
Reinforced concrete sheet piles have the advantages of high strength, high stiffness, convenient materials, and simple construction. Their shape can be designed and manufactured according to needs. The groove and tenon structure can solve the waterproofing of joints. Compared with steel sheet piles, there is no need to consider the problem of pile extraction, so before the development of underground diaphragm walls and bored pile retaining walls, foundation pit enclosure structures basically used steel sheet piles and concrete sheet piles.
Application scope of reinforced concrete sheet piles
1. Small and medium-sized foundation pit projects with an excavation depth of less than 10 m are more economical as part of the underground structure;
2. A small foundation pit within a large-area foundation pit is a "pit within a pit" project. It is not necessary to pull out piles in the pit, which reduces the difficulty of the operation;
3. Pipe trench support projects in more complex environments can replace steel sheet piles that are inconvenient to remove;
4. Waterfront foundation pit projects in water conservancy projects, inland river revetments, small harbors, port channels, dock locks, estuary flood control walls, breakwaters and other river and seawall management projects.
What is the steel sheet pile?
A steel sheet pile is a steel structure with linkage devices on the edges, and the linkage devices can be freely combined to form a continuous and tight retaining soil or water retaining wall. Steel sheet pile is a type of steel with a lock. Its cross-sections include straight plate, groove and Z-shaped, etc., and are available in various sizes and interlocking forms. Common ones include Larson type(Larson steel sheet pile), Lackawanna type, etc.
Concrete sheet pile VS. steel sheet pile
1. Structural form: Reinforced concrete sheet piles are composed of steel bars and concrete, and steel sheet piles are made of spliced steel plates;
2. Compression resistance: Reinforced concrete sheet piles have better compression resistance and can withstand greater pressure, while steel sheet piles have poor compression resistance and mainly bear tension;
3. Seismic performance: Reinforced concrete sheet piles have better seismic performance due to the denseness and rigidity of concrete, while steel sheet piles have poorer performance;
4. Project cost: Since reinforced concrete sheet piles have better performance, the project cost is correspondingly higher.
How to choose a pile foundation structure?
The choice of pile foundation structure should be based on the following factors:
1. Soil conditions: For soft soil layers, it is usually recommended to use reinforced concrete sheet piles to ensure the stability of the pile foundation; for harder soil layers or rock layers, steel sheet piles can be considered;
2. Building characteristics: For high-rise buildings or important public buildings, it is recommended to use reinforced concrete sheet piles to improve the seismic performance of the building;
3. Cost budget: If the project cost budget is tight and the soil condition is suitable, you can choose to use steel sheet piles.
Summarize
Reinforced concrete sheet piles and steel sheet piles are two common forms of pile foundation structures, each with structure's own advantages and disadvantages in different applications. In actual projects, we should comprehensively consider various factors and choose a pile foundation structure suitable for our own project.
Reinforced concrete sheet piles are not just individual sheet pile components, but a composite pile body formed by sinking reinforced concrete sheet pile components. It is a foundation pit enclosure structure that is easy to factoryize and assemble.
Reinforced concrete sheet piles have the advantages of high strength, high stiffness, convenient materials, and simple construction. Their shape can be designed and manufactured according to needs. The groove and tenon structure can solve the waterproofing of joints. Compared with steel sheet piles, there is no need to consider the problem of pile extraction, so before the development of underground diaphragm walls and bored pile retaining walls, foundation pit enclosure structures basically used steel sheet piles and concrete sheet piles.
Application scope of reinforced concrete sheet piles
1. Small and medium-sized foundation pit projects with an excavation depth of less than 10 m are more economical as part of the underground structure;
2. A small foundation pit within a large-area foundation pit is a "pit within a pit" project. It is not necessary to pull out piles in the pit, which reduces the difficulty of the operation;
3. Pipe trench support projects in more complex environments can replace steel sheet piles that are inconvenient to remove;
4. Waterfront foundation pit projects in water conservancy projects, inland river revetments, small harbors, port channels, dock locks, estuary flood control walls, breakwaters and other river and seawall management projects.
What is the steel sheet pile?
A steel sheet pile is a steel structure with linkage devices on the edges, and the linkage devices can be freely combined to form a continuous and tight retaining soil or water retaining wall. Steel sheet pile is a type of steel with a lock. Its cross-sections include straight plate, groove and Z-shaped, etc., and are available in various sizes and interlocking forms. Common ones include Larson type(Larson steel sheet pile), Lackawanna type, etc.
Concrete sheet pile VS. steel sheet pile
1. Structural form: Reinforced concrete sheet piles are composed of steel bars and concrete, and steel sheet piles are made of spliced steel plates;
2. Compression resistance: Reinforced concrete sheet piles have better compression resistance and can withstand greater pressure, while steel sheet piles have poor compression resistance and mainly bear tension;
3. Seismic performance: Reinforced concrete sheet piles have better seismic performance due to the denseness and rigidity of concrete, while steel sheet piles have poorer performance;
4. Project cost: Since reinforced concrete sheet piles have better performance, the project cost is correspondingly higher.
How to choose a pile foundation structure?
The choice of pile foundation structure should be based on the following factors:
1. Soil conditions: For soft soil layers, it is usually recommended to use reinforced concrete sheet piles to ensure the stability of the pile foundation; for harder soil layers or rock layers, steel sheet piles can be considered;
2. Building characteristics: For high-rise buildings or important public buildings, it is recommended to use reinforced concrete sheet piles to improve the seismic performance of the building;
3. Cost budget: If the project cost budget is tight and the soil condition is suitable, you can choose to use steel sheet piles.
Summarize
Reinforced concrete sheet piles and steel sheet piles are two common forms of pile foundation structures, each with structure's own advantages and disadvantages in different applications. In actual projects, we should comprehensively consider various factors and choose a pile foundation structure suitable for our own project.
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