Performance assessment of borehole arrangements for the design of rectangular shallow foundation systems  

作　　者：Marcin Chwała Danko J.Jerez Hector A.Jensen Michael Beer 

机构地区：[1]Wrocław University of Science and Technology,Poland [2]Institute for Risk and Reliability,Leibniz University Hannover,Germany [3]Departamento de Obras Civiles,Universidad Técnica Federico Santa María,Chile [4]International Joint Research Center for Resilient Infrastructure&International Joint Research Center for Engineering Reliability and Stochastic Mechanics,Tongji University,Shanghai,200092,China [5]Institute for Risk and Uncertainty and School of Engineering,University of Liverpool,United Kingdom

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2023年第12期3291-3304,共14页岩石力学与岩土工程学报（英文版）

基　　金：support of the Polish National Agency for Academic Exchange under the Bekker NAWA Programme(Grant No.BPN/BEK/2021/1/00068);which founded the postdoctoral fellowship at the Institute of Risk and Reliability at Leibniz University Hannover.The first author would also like to thank to Prof.Wengang Zhang and Chongzhi Wu(School of Civil Engineering,Chongqing University)for inspiring discussions initi-ated by High-end Foreign Expert Introduction program(Grant No.DL2021165001L)by the Ministry of Science and Technology(MOST),China;The second author would like to thank the support from ANID(National Agency for Research and Development,Chile)and DAAD(German Academic Exchange Service,Germany)under CONICYT-PFCHA/Doctorado Acuerdo Bilateral DAAD Becas Chile/2018-62180007.The third author gratefully acknowledges the support by ANID under its program FONDECYT(Grant No.1200087).

摘　　要：This study proposes a framework to evaluate the performance of borehole arrangements for the design of rectangular shallow foundation systems under spatially variable soil conditions. Performance measures are introduced to quantify, for a fixed foundation layout and given soil sounding locations, the variability level of the foundation system bearing capacities in terms of their mean values and standard deviations. To estimate these measures, the recently proposed random failure mechanism method (RFMM) has been adopted and extended to consider any arrangement of rectangular foundations and boreholes. Hence, three-dimensional bearing capacity estimation under spatially variable soil can be efficiently performed. Several numerical examples are presented to illustrate the applicability of the proposed framework, including diverse foundation arrangements and different soil correlation structures. Overall, the proposed framework represents a potentially useful tool to support the design of geotechnical site investigation programs, especially in situations where very limited prior knowledge about the soil properties is available.

关 键 词：FOUNDATIONS Geotechnical engineering Bearing capacity Optimal borehole placement Soil spatial variability 

分 类 号：TU47[建筑科学—结构工程]