Foundation settlement calculation method based on surface wave exploration technology

Abstract

The invention discloses a foundation settlement calculation method based on a surface wave exploration technology. The method comprises the steps of carrying out field ground wave exploration, collecting and processing transient surface wave data, determining a foundation settlement influence depth, dividing a soil layer, determining the thickness of each layer of soil, the number of stratums andthe surface wave speed of each layer of soil body in a foundation settlement influence depth range, and determining the type of each layer of soil; respectively calculating a foundation depth influence coefficient, an additional stress coefficient of each layer of soil body caused by foundation stress, influence factors of each soil layer in the foundation settlement influence depth range and a settlement experience correction coefficient; and finally calculating to obtain the final settlement amount of the foundation. The calculation process of the method is simple and fast; required parameters come from transient surface wave investigation, drilling, sounding and the like are not needed, the field adaptability is high, nondestructive testing is achieved, equipment is simple, the investigation cost is low, the investigation efficiency is high, under the condition that an experience correction coefficient is not utilized, high calculation precision is still achieved, and high use and popularization value and wide application prospects are achieved.

Description

technical field [0001] The invention belongs to the field of engineering geological survey, in particular to a foundation settlement calculation method based on surface wave survey technology. Background technique [0002] The calculation of foundation settlement is a key link in the design of railways, highways, industrial and civil construction, etc. At present, the layered sum method is mainly used to calculate the foundation settlement. This method needs to provide the thickness and compression of each layer of soil within the calculation depth range. Calculation parameters such as modulus and additional stress distribution. [0003] The thickness and compressive modulus of the soil layer are obtained through in-situ testing methods such as drilling and sampling laboratory tests and pre-drilling side pressure and static penetration testing. The drilling sampling period is long and the cost is high. Due to traffic difficulties, environmental protection requirements and h...

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Problems solved by technology

The drilling sampling period is long and the cost is high. Due to traffic difficulties, environmental protection requirements and high compensation fees in hills, forest areas, farmland and other areas, it is difficult to implement, and it is difficult to sample coarse-grained soil layers, and it is difficult to obtain the compressive modulus through laboratory tests; pre-drilling Type side pressure also needs to form holes, and the cost is high; static sounding is mainly suitable for fine-grained soil, and the investigation effect is poor in sandy soil, gravel soil and other coarse-grained soil layers

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