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Method for predicting influence of dynamic compaction on soil body and surrounding environment

A surrounding environment and soil technology, applied in the field of foundation soil survey, construction, basic structure engineering, etc., can solve problems such as complex determination, difficult numerical calculation models, and complex problems in nonlinear contact analysis, achieving high precision, Kinetic Model Simple Effects

Inactive Publication Date: 2015-02-04
TONGJI UNIV
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Problems solved by technology

Dynamic compaction construction is a dynamic process of repeated instantaneous high-energy impacts. Its mechanical properties and spatial conditions are constantly changing during the construction process. It is also necessary to consider the energy of the rammer falling from the air and the process of penetrating the soil. The loss problem, the determination of relevant parameters is also relatively complicated, making it difficult to establish a numerical calculation model that considers the interaction between the rammer and the soil, and the problem is more complicated when it comes to nonlinear contact analysis

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  • Method for predicting influence of dynamic compaction on soil body and surrounding environment
  • Method for predicting influence of dynamic compaction on soil body and surrounding environment
  • Method for predicting influence of dynamic compaction on soil body and surrounding environment

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Embodiment Construction

[0049] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0050] Due to the high rigidity of the rammer itself, the tamping construction process (such as figure 1 ) in the deformation and horizontal displacement and inclination of the rammer, that is, under the premise of only considering the vertical displacement of the rammer (the penetration depth of the rammer), it is assumed that the vertical displacement of the rammer in the soil layer increases linearly with the number of ramming (Such as figure 2 ). Based on this, two dynamic models of the entire construction process of the interaction between the tamper and the soil are proposed, n...

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Abstract

The invention relates to a method for predicting the influence of dynamic compaction on a soil body and the surrounding environment. The method is based on a construction full-process dynamic model considering the displacement history of a pounder in the dynamic compaction process, a non-linear value simulation technology is adopted for predicting the influence of the dynamic compaction construction on the soil body and the surrounding environment, and the method concretely comprises the following steps that (1) a dynamic compaction dynamic model is built; (2) an analysis model is built; (3) a construction full process is simulated; (4) the value calculation is carried out, and the dynamic compaction reinforcing compaction effect and the influence of the dynamic compaction on the surrounding environment are obtained. Compared with the prior art, the method has the advantages that the calculation is simple, the prediction is accurate, and the like.

Description

technical field [0001] The invention relates to the technical field of foundation reinforcement treatment construction, in particular to a method for predicting the impact of dynamic compaction on soil and the surrounding environment. Background technique [0002] The dynamic dynamic compaction method, in which the rammer falls from a high altitude and repeatedly rams the soft soil layer, is widely used at home and abroad in the construction of port engineering, coastal engineering, road surface engineering and other industrial and civil construction facilities. Used in the construction of airport runways. With the wide application of this construction method, it is necessary to study the impact of its construction on the soil and the surrounding environment. [0003] At present, the main means of studying the impact of construction on the surrounding environment are: theoretical analysis, on-site monitoring, empirical formula, numerical simulation, etc. Non-numerical meth...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D1/00
CPCE02D1/00
Inventor 谭勇李想蔡超君
Owner TONGJI UNIV
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