Results 181 to 190 of about 2,122,304 (321)

Study on the failure mechanism of the shield excavation face in the sandy cobble stratum under different buried depths

open access: yesDeep Underground Science and Engineering, EarlyView.
Abstract One of the significant challenges faced in shield tunnel construction is the risk of collapse resulting from abrupt changes in soil conditions in advance of the working face, particularly within the sandy cobble stratum. This study aims to effectively manage these sudden variations and to further investigate the failure mechanisms associated ...
Hua Jiang   +4 more
wiley   +1 more source

Temperature‐dependent shear behavior and constitutive model of the rock–concrete interface

open access: yesDeep Underground Science and Engineering, EarlyView.
Shear tests were conducted to investigate the temperature‐dependent shear behavior of the rock–concrete interface, highlighting the interaction between the surrounding rock and the lining during tunnel fires. Under experimental conditions, concrete exhibited greater temperature sensitivity than rock, with the shear fracture surface transitioning from ...
Hongbin Chen   +6 more
wiley   +1 more source

The espacialization of urban voids in Londrina (PR)

open access: yes, 2018
During the recent years, the urban space production is subordinated to the real state capital reproduction, mostly by the land ownership appreciation. In the cities production the agents involved produce or reproduce the urban morphology, where adds up the physical shapes, process and contents aspects.
openaire   +2 more sources

Random finite element analysis on ground subsidence caused by tunnel excavation in karst regions with spatial variable soil

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates ground subsidence during tunnel excavation in karst areas, highlighting the combined effects of karst cave proximity, cave size, and soil spatial variability. Findings suggest that shorter cave distances and larger cave sizes increase subsidence variability, and a modified Peck formula is proposed for more accurate subsidence ...
Zhenghong Su   +4 more
wiley   +1 more source

Management of urban voids: context, case and propositions.

open access: yes, 2016
Este artículo de revisión tiene como propósito discutir una noción ampliada del concepto de vacío urbano en el marco de una coyuntura global de crecimiento urbano disperso y una urgente gestión sostenible del territorio. Para informar sobre el estado actual de la discusión sobre el tema de los vacíos urbanos, este ensayo se ha articulado en dos ...
openaire   +1 more source

Social Comparison and Its Association With Disordered Eating Symptoms: A Systematic Review and Meta‐Analysis

open access: yesInternational Journal of Eating Disorders, EarlyView.
ABSTRACT Objective Social comparison has been widely implicated in the etiology and maintenance of body dissatisfaction and eating disorders. At the same time, however, the magnitude of this relationship remains unclear, with existing studies varying widely in methodology, measurement, and sample characteristics.
Fidan Turk   +5 more
wiley   +1 more source

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