What is an excavation pile? What is called digging the soil between the piles

Before the excavation pile is poured concrete, the reinforcement cage should be placed first, and the thickness of the virtual soil in the hole should be measured again, and the cleaning should be carried out if it exceeds the requirements. Appropriate measures should be taken to prevent bending and twisting when handling the reinforcement cage, and the hole should be straightened, stabilized and slowly sunk when the reinforcement cage is buried, and it should be fixed immediately when it is lowered to the design position. Concrete blanking using string cylinders, deep pile holes with concrete conduit, such as groundwater, should be taken concrete conduit water pouring concrete process.

The concrete should be poured vertically into the pile hole to avoid the concrete obliquely impacting the hole wall and causing a collapse. Concrete should be poured continuously in layers, and the height of each layer should not exceed meters. For small-diameter excavated piles, the large slump and downstroke of concrete are used to make them dense below 6 meters from the ground.

Large-diameter excavated piles should be compacted in layers. The first time to water to the top surface of the bottom of the expansion position, then vibrate and compact, and then pour the pile in layers until the top of the pile. Wipe and smooth the concrete before the initial setting to avoid plastic shrinkage cracks or circumferential dry shrinkage cracks.

Summary. 1. The difference between the detection of excavated piles is to do pile foundation testing (to determine whether the vertical compressive bearing capacity of the pile meets the design requirements), and the excavation foundation can not be done pile foundation detection. 2. The difference between the wall guards:

The original definition of digging the foundation is to directly form a hole, and the friction between the hole wall and the concrete is used to protect the wall. 3. The force is different: the force of the manually dug pile is considered according to the end bearing pile; The excavation foundation belongs to the friction type of force.

**Refer to the committee or quote the content of this article, please indicate** to the cheese product 4, depth difference: manual digging pile is generally within 30 meters in depth, and the diameter is not less than 800; The excavation foundation is generally within 10 meters, and the diameter is not limited. In the individual law, the water is only knotted, and the piece is seen and then refined.

5. Classification difference: the excavated pile is classified as a pile, and the excavated foundation is classified as a general excavated foundation; The digging pile is divided into manual hole formation and mechanical hole formation. Small its surface line generation road strong release gauge horse stone shadow shape.

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1. The difference between the detection of excavated piles is to do pile foundation testing (to determine whether the vertical compressive bearing capacity of the pile meets the design requirements), and the excavation foundation can not be tested. 2. The difference between the wall protection: the artificial digging pile must protect the wall, and the original definition of the excavation foundation is to directly form a hole, and use the friction between the hole wall and the concrete to do not do any wall protection.

3. The force is different: the force of the manually dug pile is considered according to the end bearing pile; The excavation foundation belongs to the friction type of force. **Refer to or quote the content of this article, please indicate** to the cheese product 4, depth difference:

The height of the manually dug pile is within 30 meters, and the diameter is not less than 800; The excavation foundation is generally within 10 meters, and the diameter is not limited. Dismantle and touch in the law and other water because only knotted, and the piece is seen again and again. 5. Classification differences:

The excavated pile is classified as a pile, and the excavated foundation is classified as a general excavated foundation; The digging pile is divided into manual hole formation and mechanical hole formation. Small its surface line generation road strong release gauge horse stone shadow shape. Resources.

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Digging the soil between the piles is to dig the earthwork between the piles, and the soil between the piles is set up on the foundation with the excavation of the piles to calculate the digging between the piles, and the height of the engineering quantity is according to the height of the design foundation bottom elevation to the reserved length of the pile multiplied by the width of the excavation of the foundation section without the foundation multiplied by the length of the foundation excavation. Architectural terms, the so-called inter-pile soil refers to the artificial earthwork between the design pile top elevation and the design foundation cushion bottom elevation.

When the pile is constructed, the elevation of the soil layer and the pile elevation of the actual construction are higher than the design elevation, and the extra soil needs to be dug out, and the extra pile head is removed, which is called the excavation between the piles and the pile breaking head.

Piling works refer to the work of driving piles into the ground to make the foundation of a building solid.

According to the relative ratio of the side friction resistance and the end resistance provided by the soil, the engineering pile can be divided into four categories: friction pile, end bearing pile, end bearing friction pile and friction end bearing pile. According to the size of the pile diameter, it can be divided into three categories: large-diameter piles, medium-diameter piles and small-diameter piles. Piles can be divided into concrete piles, wooden piles, steel piles and composite piles according to the pile body material.

According to the different piling methods, it can be divided into: extruded piles (such as driven prefabricated piles), some large and extruded piles (such as pre-drilled and driven prefabricated piles) and non-extruded piles (such as bored cast-and-pour piles). According to the construction method, piles can be divided into two categories: prefabricated piles and cast-in-place piles.

<>What is piling? What are the piles used in piling works? The following is an introduction to the main content of what is piling engineering brought by Zhongda Consulting for reference.

Piling engineering can be understood as pile foundation engineering, pile selection and layout.

Piles can be classified according to the following provisions.

Classified by load-bearing traits.

Friction piles. Friction pile In the ultimate bearing capacity state, the pile top load is borne by the resistance of the pile travel side.

In the ultimate bearing capacity state, the pile top load is mainly borne by the pile side resistance.

Friction piles. End-bearing piles.

End-bearing pile Under the ultimate bearing capacity state, the load on the top of the pile is borne by the resistance of the pile end.

Friction end bearing pile In the ultimate bearing capacity state, the pile top load is mainly caused by the pile end.

Bear the pile. Classified according to the use function of the pile.

Vertical compressive piles.

Vertical uplift piles.

Horizontal load pile.

Composite load pile.

Classified according to pile material.

Concrete piles, cast-in-place piles, prefabricated piles.

Steel piles. Composite material piles.

Classified by pile formation method.

Non-extruded pile, dry operation method, with sui, mud wall protection method, casing wall protection method.

Partially extruded piles, partially extruded piles, pre-drilled and driven prefabricated piles.

Open piles. Extruded piles, extruded piles, precast piles, driven or hydrostatically pressed.

Classified by pile size.

Small piles. Medium diameter piles.

1. The amount of earthwork between the piles.

The amount of excavation between piles needs to be calculated according to the volume of the pile cap excavation, the list does not calculate the slope, and the amount of the fixed liquid tomb is calculated according to the requirements of the description of the working face and slope. Then set the quota sub-item of the earthwork between the piles.

2. The depth of the earthwork between the excavated piles.

The excavation depth is the excavation within the range from the design foundation bottom or cushion bottom elevation to the design pile top elevation, and there is no direct relationship with the length of the pile.

Excavation between piles refers to the excavation below the design elevation of the pile top and the excavation within the range of meters above the design elevation of the pile top, when excavating, the volume of the pile body is not deducted, the corresponding project is multiplied by the coefficient, generally after the pile, the elevation of the pile top will be lower than the ground elevation (that is, below the ground), the pile head should be dug out when doing the foundation, the amount of excavation in this part is called the amount of excavation between the piles, because of the fear of damage to the pile body by the excavation machinery, so the general manual excavation.