The three-dimensional numerical model of the foundation pit engineering is established, and fluid-structure coupling method used to calculate settlement pile adjacent railway bridge caused by excavation dewatering pit. results show that range soil around reaches 140m, within influence range, but maximum value does not exceed limit specified in design. this paper provides effective guidance for ...

This paper uses Indraratna seepage theory, Han pile-soil theory and composite foundation to establish three plane strain models. Through finite element calculations, the changes in pore pressure settlement are compared, following laws found: (1) The model established by cannot reflect objective of deformation; (2) In case multiple piles, there is no difference between considering bearing charac...

With the continuous development of urbanization and rapid science technology, requirements for foundation pit engineering are getting higher higher. Foundation is gradually developing in direction larger area deeper excavation. In examples, combined supporting structure a pile–brace pile–anchor pits widely used, while examples supported by pile–anchor–brace system less frequently used. Based on...

This study evaluated the lateral and overturning resistance of wind turbine foundations reinforced with piles on bedrock through model experiments. In particular, changes in were analyzed according to cross-sectional size presence foundations. As a result, by reducing cross-section, pile-reinforced foundation was compared existing large cross-sections shown be 1.68 times greater. case vertical ...

The use of static load testing in optimising design and providing verification of suitability and constructability continues to be unsurpassed in the foundation industry. The utilisation of top load reaction testing appears to be that with which most European engineers are familiar, but a variation on this, which has become just as conventional in some parts of the world, is the use of bi-direc...

The response of pile groups and piled structures to vertical tunnelling-induced loads is studied. A two-stage model adopted that can efficiently consider external actions, greenfield tunnelling movements, superstructure stiffness, ultimate shaft base stresses, pile-soil interactions in uniform or layered soils, local soil behaviour (as either linear elastic, elastic perfectly-plastic, nonlinear...

The dynamic responses of pile–liquefied composite soils are complex, and the bearing capacities single piles or pile groups in liquefiable remain unclear. For friction piles, resistance determines vertical capacity pile. In a pile–soil system, it is very important to study changes during vibration. Based on shaking table test, this investigated foundation–liquefied soil system under simulated h...

Generally, the bridges or buildings cannot be constructed on a refuse landfill, since the special chemical compositions and microorganisms in landfill will impose adverse effects on the concrete foundations. Especially, the impacts on their durability are still unknown. The purpose of this paper is to get the corrosive features of a refuse landfill to give suggestions for the durability design ...

This study examines the capability of the Relevance Vector Machine (RVM) and Multivariate Adaptive Regression Spline (MARS) for prediction of ultimate capacity of driven piles and drilled shafts. RVM is a sparse method for training generalized linear models, while MARS technique is basically an adaptive piece-wise regression approach. In this paper, pile capacity prediction models are developed...