Deep soft foundation consolidation settlement layered summation algorithm based on soft soil parameter spatial anisotropy

Abstract

The invention discloses a deep soft foundation consolidation settlement layering summation algorithm based on soft soil parameter spatial anisotropy. The algorithm comprises the steps: carrying out the layering and partitioning of a soft soil foundation according to the stratum condition of a soft soil region; calculating the vertical self-weight stress of the foundation at the layering position;calculating foundation additional stress, and obtaining foundation additional stress at each layered interface; if the thickness of the subarea is relatively large, dividing the area into layers according to intervals; averaging and calculating the average value of the self-weight stress and the additional stress of each layered foundation according to the stress of the upper bottom surface and the lower bottom surface of each layer, determining the depth of a foundation compression layer, determining a subarea where a soil layer is located, calculating the main consolidation settlement amountof the soft soil foundation of each layer, calculating the total main consolidation settlement amount, and calculating the total final settlement amount; calculating the foundation consolidation degree at any moment; and predicting the foundation settlement amount. According to the deep soft foundation consolidation settlement layering summation algorithm, the property change of the deep soft soil at different depths is considered, the deep soft soil foundation settlement prediction precision is improved, and post-construction settlement prediction and control of engineering construction in adeep soft soil area are realized.

Description

technical field [0001] The invention belongs to the field of soft soil foundation settlement calculation in geotechnical engineering, and more particularly relates to a layered sum algorithm of consolidation settlement of deep soft soil based on the spatial heterogeneity of soft soil parameters. Background technique [0002] With the rapid economic and social development of the Guangdong-Hong Kong-Macao Greater Bay Area, the development and construction of the project continues to advance, and the project construction site is also expanding from the original area with good geological conditions to the deep soft soil area. Soft soil has the characteristics of high water content, low shear strength, and high compressibility, which often easily cause large post-construction settlement and uneven settlement, which has become a scientific problem to be solved urgently in engineering construction in soft soil areas. Accurate calculation of soft soil foundation Settlement is of gre...

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Problems solved by technology

Neglecting the spatial heterogeneity of soft soil properties will definitely affect the accuracy of soft foundation settlement calculations, and obtain results that are inconsistent with engineering practice, which will cause huge hidden dangers to the normal operation and safe use of structures

In view of the above situation, on the basis of fully analyzing the spatial heterogeneity of soft soil parameters, a method for calculating the sum of layers of consolidation settlement of deep soft soil considering the spatial heterogeneity of soft soil parameters is proposed. The disadvantages of the calculation of the same parameter fully consider the changes in the physical and mechanical properties of deep soft soil at different depths, and improve the prediction accuracy of deep soft soil foundation settlement, which is of great significance to the post-construction settlement prediction and control of engineering construction in deep soft soil areas

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