Method for judging landslide type of coastal underwater soft soil slope under action of cyclic dynamic load

Abstract

The invention discloses a method for judging the landslide type of a coastal underwater soft soil slope under the action of a cyclic dynamic load. Arrangement is performed according to a GDS dynamic triaxial test result to obtain an axial strain-cycle index diagram, a hyper-static pore water pressure-cycle index diagram, a partial stress-axial strain diagram and a partial stress-average effectiveforce diagram, and the diagrams are used for describing typical damage forms of a soil body under different cyclic dynamic load conditions, and are in one-to-one correspondence with landslide types ofdifferent coastal underwater soft soil slopes to achieve that the coastal underwater soft soil slope landslide types caused by cyclic dynamic loads are determined through an indoor geotechnical testmethod. According to the method, the landslide type of the coastal underwater soft soil slope under the power cycle load condition can be pre-judged through the soil body damage characteristics, and the feasibility of preventing and reducing coastal underwater soft soil slope landslide hazards caused by power cycle loads by taking effective measures in advance in the design and construction stagesof various projects related to the coastal underwater soft soil slope is improved.

Description

technical field [0001] The invention relates to the field of judging landslide types of coastal underwater soft soil slopes, in particular to a method for judging landslide types of coastal underwater soft soil slopes under the action of cyclic dynamic loads. Background technique [0002] With the continuous development of my country's traffic engineering construction, coastal roads / expressways, coastal water landscape platforms, cross-sea bridges and other various coastal slope protection projects have emerged. Such projects often involve the stability and safety of coastal soft soil slopes, especially how to reduce and avoid various types of cyclic dynamic loads (such as pile driving vibration loads in pile foundation construction, and surrounding soft soil slopes in coastal waters). Landslide hazards of coastal soft soil slopes under the conditions of traffic cyclic loads and seismic cyclic dynamic loads have always been the focus of attention and one of the research hots...

AI Technical Summary

Problems solved by technology

It is worth noting that the above-mentioned common landslide classifications are mostly confirmed based on the characteristics of the landslide body after the occurrence of the landslide, and the existing landslide classification theories are still unable to predict the coastal soft soil slope before the landslide disaster occurs. predict the type of landslide

[0004] In addition, for coastal underwater soft soil slopes, the occurrence of such side slope landslides is usually closely related to the mechanical failure of the soil, but there is still a lack of classification theory for coastal underwater soft soil slope landslides related to the soil failure mechanism and discriminant method

Images