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C100 Dynamic Cone Penetrometer YX-2
It is used to determine the allowable bearing capacity of various types of soil, and can find out the uniformity of the soil layer in the horizontal and vertical directions, determine the position of the pile foundation holding layer and estimate the bearing capacity of the single pile.
It is a field test method that uses a certain hammering energy to drive a certain specification of a cone probe into the soil, and determines the engineering properties of the soil layer according to the difficulty of entering the soil.
The discriminant indicator uses the number of hammer hits penetrated into a certain depth. It is the main means of coarse-grained soil foundation survey and testing.
Type | Light | Heavy | |
Probe specifications | Diameter | 40mm | 74mm |
Cross-sectional area | 12.6cm2 | 43cm2 | |
Cone angle | 60° | 60° | |
Drop weight | Hammer mass | 10kg | 63.5kg |
Drop distance | 50cm | 76cm | |
Probe diameter | 25mm | 42mm | |
Test index N | Penetration 30cm hammer number N10 | Penetration 10cm hammer number N63.5 | |
Applicable to soil | shallow fill,sand,silty clay clay | Sanravel soil below medium density and soft rock |
The rod length correction factor for dynamic contact is α
Rod length(m) | ≤1 | 2 | 3 | 4 | 5 | 6 | 10 | 12 | 15 |
α | 1.00 | 0.96 | 0.90 | 0.85 | 0.83 | 0.81 | 0.76 | 0.75 | 0.74 |
Note: The data in this table is measured by the automatic decoupling method.
Ministry of Construction Standard N63.5 rod length correction coefficient α
L α N63.5 |
≤2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 |
1 | 1.00 | 0.98 | 0.94 | 0.93 | 0.90 | 0.87 | 0.84 | 0.81 |
5 | 1.00 | 0.96 | 0.93 | 0.90 | 0.86 | 0.83 | 0.80 | 0.77 |
10 | 1.00 | 0.95 | 0.91 | 0.87 | 0.83 | 0.79 | 0.76 | 0.73 |
15 | 1.00 | 0.94 | 0.89 | 0.84 |
0.80 |
0.76 | 0.72 | 0.69 |
20 | 0.77 | 0.73 | 0.69 | 0.66 |
Note: L--- Probe rod length (m);
N63.5--- Measured number of heavy dynamic contact (hits/10cm);
α value --- measured by a free drop weight.
Ministry of Railways standard N63.5 rod length correction factor α
L α N63.5 |
≤2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 |
5 | 1.00 | 0.96 | 0.93 | 0.90 | 0.88 | 0.85 | 0.82 | 0.79 | 0.77 | 0.75 |
10 | 1.00 | 0.95 | 0.90 | 0.86 | 0.83 | 0.79 | 0.76 | 0.73 | 0.70 | 0.67 |
15 | 1.00 | 0.93 | 0.88 | 0.83 | 0.79 | 0.75 | 0.71 | 0.67 | 0.63 | 0.59 |
20 | 1.00 | 0.92 | 0.85 | 0.80 | 0.75 | 0.70 | 0.66 | 0.62 | 0.57 | 0.53 |
25 | 1.00 | 0.90 | 0.83 | 0.77 | 0.72 | 0.67 | 0.62 | 0.57 | 0.53 | 0.48 |
30 | 1.00 | 0.89 | 0.81 | 0.75 | 0.69 | 0.64 | 0.58 | 0.54 | 0.49 | 0.44 |
35 | 1.00 | 0.87 | 0.79 | 0.73 | 0.67 | 0.61 | 0.56 | 0.51 | 0.46 | 0.41 |
40 | 1.00 | 0.86 | 0.78 | 0.71 | 0.64 | 0.59 | 0.53 | 0.48 | 0.43 | 0.39 |
50 | 0.84 | 0.75 | 0.67 | 0.61 | 0.55 | 0.50 | 0.45 | 0.40 | 0.36 |
Note: L--- Probe rod length (m);
N63.5-- Measured number of heavy dynamic contact (hits/10cm);
Ministry of Metallurgy, Nonferrous Metals Corporation standard N63.5 rod length correction coefficient α
L α N63.5
|
≤2 | 4 | 6 | 8 | 10 | 12 |
5 | 1.00 | 0.96 | 0.93 | 0.90 | 0.88 | 0.85 |
10 | 1.00 | 0.95 | 0.90 | 0.86 | 0.83 | 0.79 |
15 | 1.00 | 0.93 | 0.88 | 0.83 | 0.79 | 0.75 |
20 | 1.00 | 0.92 | 0.85 | 0.80 | 0.75 | 0.70 |
25 | 1.00 | 0.90 | 0.83 | 0.77 | 0.72 | 0.67 |
30 | 1.00 | 0.89 | 0.81 | 0.75 | 0.69 | 0.64 |
35 | 1.00 | 0.87 | 0.79 | 0.73 | 0.67 | 0.61 |
40 | 1.00 | 0.86 | 0.78 | 0.71 | 0.64 | 0.59 |
≥50 | 1.00 | 0.84 | 0.75 | 0.67 | 0.61 | 0.55 |
1. Warranty 1 year of replacement and return.
2. Providing factory visit and study, technical training.