Is the friction force of manual digging pile considered as wall
Publish: 2021-05-02 03:40:15
1. Manual hole digging pile is divided into end bearing pile and friction pile according to bearing stratum. The friction pile bears the upper load by the friction between the pile body (including the retaining wall) and the surrounding soil, so the manhole pile retaining wall must be constructed; The end bearing pile mainly depends on the bearing stratum at the lower part of the enlarged head to bear the upper load. At this time, the wall protection construction is mainly to protect the construction safety. If the soil outside the wall protection has enough strength, the wall protection can be avoided.
2. Manual hole digging pile is usually the part of earth excavation will do concrete or brick wall protection, and the diameter of excavation will be expanded accordingly. Because the shale or hard rock will not collapse and the diameter of the excavation is equal to the diameter of the pile core, there is no retaining wall. Of course, if it is on the design drawing, such as digging in the cobble layer or backfill area, it is also necessary to do the wall protection. Whether the budget is calculated or not depends on the design drawings, the construction drawings and the as built drawings. If there are, it will not be calculated.
3.
Whether it is red brick wall or concrete wall, generally the wall protection is not too uniform, such as:
e to the existence of interface, in the low strain test, it is necessary to determine the influence of these variable cross-section multi signal through the test. At the same time, if it is only a local wall protection, such as a few meters above the wall, we should pay attention to the change of the interface at the bottom of the wall protection, and at the same time, we should pay attention to the second or even multiple reflections of the reflection< br />
4. You met a lonely stone, right? If the depth of manual hole digging pile into the rock meets the design, it is OK. Still going through the past?
5. -
the earthwork volume of manual excavation pile is calculated from the bottom of the hole to the top of the hole according to the sectional area of excavation
the amount of wall protection concrete of manual excavation pile is calculated from the bottom of the hole to the bottom of the steel casing according to the cross-sectional area of the wall protection, and even to the top of the hole without the steel casing
the concrete volume of the manual hole digging pile is calculated from the bottom of the hole to the bottom of the bearing platform according to the sectional area of the pile
to calculate the volume of core concrete of manual digging pile, the cross-sectional area of the pile is calculated according to the average value of the inner diameter of the pile retaining wall, and then multiplied by the pile length.
the earthwork volume of manual excavation pile is calculated from the bottom of the hole to the top of the hole according to the sectional area of excavation
the amount of wall protection concrete of manual excavation pile is calculated from the bottom of the hole to the bottom of the steel casing according to the cross-sectional area of the wall protection, and even to the top of the hole without the steel casing
the concrete volume of the manual hole digging pile is calculated from the bottom of the hole to the bottom of the bearing platform according to the sectional area of the pile
to calculate the volume of core concrete of manual digging pile, the cross-sectional area of the pile is calculated according to the average value of the inner diameter of the pile retaining wall, and then multiplied by the pile length.
6. The retaining wall is not a part of the pile body. It is installed for the sake of safety and the protection of the pile
7. Calculate the volume. The formula is: the cross-sectional area of the retaining wall × Last perimeter
of course, the quantity of wall protection of manual digging pile is the calculation quantity, that is, the thickness of concrete multiplied by perimeter, and then multiplied by depth
quantity of reinforcement:
1. Main reinforcement: total length of reinforcement cage * number of main reinforcement * proportion of reinforcement
2. Hollow reinforcement: number of reinforcement * perimeter * proportion of reinforcement
3. Coil: total length * number of reinforcement * proportion of reinforcement
of course, the quantity of wall protection of manual digging pile is the calculation quantity, that is, the thickness of concrete multiplied by perimeter, and then multiplied by depth
quantity of reinforcement:
1. Main reinforcement: total length of reinforcement cage * number of main reinforcement * proportion of reinforcement
2. Hollow reinforcement: number of reinforcement * perimeter * proportion of reinforcement
3. Coil: total length * number of reinforcement * proportion of reinforcement
8. The work quantity of manual digging pile retaining wall is of course the calculation quantity, that is, the concrete thickness multiplied by the perimeter, and then multiplied by the depth
reinforcement work quantity:
1. Main reinforcement: total length of reinforcement cage * number of main reinforcement * reinforcement proportion
2. Hollow reinforcement: Number * perimeter * reinforcement proportion
3. Wire rod: total length * Number * reinforcement proportion
reinforcement work quantity:
1. Main reinforcement: total length of reinforcement cage * number of main reinforcement * reinforcement proportion
2. Hollow reinforcement: Number * perimeter * reinforcement proportion
3. Wire rod: total length * Number * reinforcement proportion
9. From the nearest bus station, Take Dongguan Nancheng bus station, transfer C1 or C3 to gymnasium station, I take Tianhe Bus Station, the whole journey is about 1.5 hours. It seems that it's OK to go to Dongguan terminal
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