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Saturated loess stratum engineering precipitation settlement measuring and calculating structure and measuring and calculating method
The invention provides a saturated loess stratum engineering precipitation settlement measuring and calculating structure, and relates to the technical field of geotechnical engineering. The actual phreatic water level of each sampling drill hole is recorded; basic physical and mechanical parameters such as void ratio e, liquid index IL and compression modulus ES are tested per meter; according to the excavation depth of the underground structure, the water level drop depth of the position of the existing environmental facility is determined; calculating effective stress increment caused by engineering rainfall in the rainfall center area and the existing environmental facility; according to the effective stress increment, the void ratio e, the liquid index IL and the compression modulus ES at each depth in the water level drawdown range, calculating to obtain the rainfall settlement predictive quantity. The technical problems that in the prior art, due to the fact that calculation is inaccurate and empirical coefficient values are too general, influences of layer thickness changes and soil property changes cannot be completely reflected, and when layered settlement cannot be calculated and no experience exists, the difference between a prediction result and the reality is large, and the feasibility and safety of an engineering scheme are greatly reduced are solved.
本发明提供一种饱和黄土地层工程降水沉降测算结构，涉及岩土工程的技术领域，记录各个取样钻孔的实际潜水位；每米测试其孔隙比e、液性指数IL和压缩模量ES等基本物理力学参数；根据地下结构开挖的深度，确定既有环境设施位置处的水位降深；计算降水中心区域和既有环境设施处的工程降水所引起的有效应力增量；依据水位降深范围内各深度处的有效应力增量、孔隙比e、液性指数IL和压缩模量ES计算得到降水沉降预测量。本发明缓解了现有技术中存在的因计算不准确及经验系数取值过于笼统，不能完整反映层厚变化、土性变化的影响，更不能计算分层沉降无经验时，预测结果与实际相差较大，造成工程方案的可行性和安全性大大降低的技术问题。
Saturated loess stratum engineering precipitation settlement measuring and calculating structure and measuring and calculating method
The invention provides a saturated loess stratum engineering precipitation settlement measuring and calculating structure, and relates to the technical field of geotechnical engineering. The actual phreatic water level of each sampling drill hole is recorded; basic physical and mechanical parameters such as void ratio e, liquid index IL and compression modulus ES are tested per meter; according to the excavation depth of the underground structure, the water level drop depth of the position of the existing environmental facility is determined; calculating effective stress increment caused by engineering rainfall in the rainfall center area and the existing environmental facility; according to the effective stress increment, the void ratio e, the liquid index IL and the compression modulus ES at each depth in the water level drawdown range, calculating to obtain the rainfall settlement predictive quantity. The technical problems that in the prior art, due to the fact that calculation is inaccurate and empirical coefficient values are too general, influences of layer thickness changes and soil property changes cannot be completely reflected, and when layered settlement cannot be calculated and no experience exists, the difference between a prediction result and the reality is large, and the feasibility and safety of an engineering scheme are greatly reduced are solved.
本发明提供一种饱和黄土地层工程降水沉降测算结构，涉及岩土工程的技术领域，记录各个取样钻孔的实际潜水位；每米测试其孔隙比e、液性指数IL和压缩模量ES等基本物理力学参数；根据地下结构开挖的深度，确定既有环境设施位置处的水位降深；计算降水中心区域和既有环境设施处的工程降水所引起的有效应力增量；依据水位降深范围内各深度处的有效应力增量、孔隙比e、液性指数IL和压缩模量ES计算得到降水沉降预测量。本发明缓解了现有技术中存在的因计算不准确及经验系数取值过于笼统，不能完整反映层厚变化、土性变化的影响，更不能计算分层沉降无经验时，预测结果与实际相差较大，造成工程方案的可行性和安全性大大降低的技术问题。
Saturated loess stratum engineering precipitation settlement measuring and calculating structure and measuring and calculating method
饱和黄土地层工程降水沉降测算结构及测算方法
DENG GUOHUA (author) / YASUSUKE (author) / KANG JIAWEI (author) / NAM A-RIM (author) / YU WENLONG (author) / WANG LIQIN (author) / LI LUN (author)
2024-01-12
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
/
G01C
Messen von Entfernungen, Höhen, Neigungen oder Richtungen
,
MEASURING DISTANCES, LEVELS OR BEARINGS
/
G01D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE
,
Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein
/
G06F
ELECTRIC DIGITAL DATA PROCESSING
,
Elektrische digitale Datenverarbeitung
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