A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for judging cohesive soil state
The invention discloses a cohesive soil state judgment method, which comprises the following steps of: driving an injection device into a soil layer at the bottom of a drilled hole, and starting to record the hammering number of every 10cm of the injection device after the injection device reaches the bottom of the hole and is driven into the soil by 15cm; After 30 cm is accumulated and the actually-measured hammering number N'value is recorded, the actually-measured hammering number N 'value is corrected, the state of the cohesive soil is judged through the corrected standard hammering number N, and if N is smaller than or equal to 3, it is judged that the soil layer is flow plastic soil; If N is greater than 3 and less than 5, determining that the soil layer is soft plastic soil; If N is more than or equal to 5 and less than 13, judging that the soil layer is plastic soil; and if N is greater than or equal to 13, judging that the soil layer is hard plastic soil or hard soil. According to the method for discriminating the cohesive soil state, the corrected standard penetration impact number is taken as the discrimination standard, so that the cohesive soil state is discriminated more accurately.
本发明公开了一种黏性土状态的判别方法，该判别方法通过将贯入器打入钻孔孔底的土层中，贯入器到达孔底且打入土中15cm后开始记录每打入10cm的锤击数，累计30cm并记录实测锤击数N’值后，对实测锤击数N’值进行修正，并通过修正后标贯击数N来判断黏性土的状态，若N≤3，则判定该土层为流塑土；若3<13，则判定该土层为可塑土；若N≥13，则判定该土层为硬塑土或坚硬土。本发明的黏性土状态的判别方法通过以修正后标贯击数为判别标准，从而更为精准地对黏性土状态进行判别。
Method for judging cohesive soil state
The invention discloses a cohesive soil state judgment method, which comprises the following steps of: driving an injection device into a soil layer at the bottom of a drilled hole, and starting to record the hammering number of every 10cm of the injection device after the injection device reaches the bottom of the hole and is driven into the soil by 15cm; After 30 cm is accumulated and the actually-measured hammering number N'value is recorded, the actually-measured hammering number N 'value is corrected, the state of the cohesive soil is judged through the corrected standard hammering number N, and if N is smaller than or equal to 3, it is judged that the soil layer is flow plastic soil; If N is greater than 3 and less than 5, determining that the soil layer is soft plastic soil; If N is more than or equal to 5 and less than 13, judging that the soil layer is plastic soil; and if N is greater than or equal to 13, judging that the soil layer is hard plastic soil or hard soil. According to the method for discriminating the cohesive soil state, the corrected standard penetration impact number is taken as the discrimination standard, so that the cohesive soil state is discriminated more accurately.
本发明公开了一种黏性土状态的判别方法，该判别方法通过将贯入器打入钻孔孔底的土层中，贯入器到达孔底且打入土中15cm后开始记录每打入10cm的锤击数，累计30cm并记录实测锤击数N’值后，对实测锤击数N’值进行修正，并通过修正后标贯击数N来判断黏性土的状态，若N≤3，则判定该土层为流塑土；若3<13，则判定该土层为可塑土；若N≥13，则判定该土层为硬塑土或坚硬土。本发明的黏性土状态的判别方法通过以修正后标贯击数为判别标准，从而更为精准地对黏性土状态进行判别。
Method for judging cohesive soil state
一种黏性土状态的判别方法
ZHANG YI (author) / ZHOU HONGBO (author) / WEI SHIFENG (author) / ZHANG DONGZHI (author) / GUO SHENGBIN (author)
2021-08-20
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Cohesive soil plasticity field judging instrument and field judging method thereof
| European Patent Office | 2015
Cohesive soil curing agent and cohesive soil soft foundation treating method thereof
| European Patent Office | 2015
Consolidation coefficient -- Cohesive soil mixtures
| Engineering Index Backfile | 1964
Vertical Slope in Cohesive Soil
| Springer Verlag | 2017