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Consolidation and Deformation Characteristics of Soft Rock Foundation in Hydrological Wetland Environment
Características de consolidación y deformación de la Fundación Roca Suave en el entorno de humedales hidrológicos
DOI:
https://doi.org/10.15446/esrj.v24n2.87920Keywords:
Hydrological wetland, Soft rock soil, Foundation, Consolidation, Deformation characteristics, Settlement (en)Humedal hidrológico, Suelo de roca blanda, Fundación, Consolidación, Características de deformación, Asentamiento (es)
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The widespread distribution of soft rock and soft soil in hydrological wetland environment is a common geotechnical engineering problem encountered in coastal engineering construction. To solve this problem, a study method for consolidation and deformation characteristics of soft rock and soft soil foundation in hydrological wetland environment is proposed. Taking K9+280-K11+120 section along Fu-Nehe section of National Highway 111 as the research object, the consolidation and deformation characteristics and loading conditions of soft soil foundation under embankment filling load, treatment methods of soft rock foundation, stratum conditions, temperature changes and time effects are analyzed. The results show that although the wetland soft rock and soil layer is not thick, the settlement of soft rock and soil accounts for more than 80% of the total settlement. Negative temperature has a certain influence on the consolidation settlement of soft rock foundation, which is mainly manifested in the difference between the settlement process of the central separation zone and the roadbed soft soil foundation; the pore water pressure of soft rock foundation dissipates to varying degrees. According to the monitoring results of settlement and pore water pressure, bagged sand wells are more suitable for soft rock foundation engineering treatment in hydrological wetland. The research results can provide a reference for the study, calculation and design of consolidation and deformation of soft rock foundation in hydrological wetland.
La distribución generalizada de roca blanda y suelo blando en el entorno de humedales hidrológicos es un problema común de ingeniería geotécnica que se encuentra en la construcción de ingeniería costera. Para resolver este problema, se propone un método de estudio para las características de consolidación y deformación de rocas blandas y cimientos de suelos blandos en ambientes de humedales hidrológicos. Tomando la sección K9+280-K11+120 a lo largo de la sección Fu-Nehe de la Carretera Nacional 111 como objeto de investigación, se analizaron las características de consolidación y deformación y las condiciones de carga de los cimientos del suelo blando bajo la carga de relleno del terraplén, los métodos de tratamiento de los cimientos de rocas blandas, las condiciones del estrato, los cambios de temperatura y los efectos del tiempo. Los resultados muestran que aunque la capa de suelo y roca blanda del humedal no es gruesa, el asentamiento de roca blanda y suelo representa más del 80% del asentamiento total. La temperatura negativa tiene cierta influencia en el asentamiento de consolidación de los cimientos de rocas blandas, que se manifiesta principalmente en la diferencia entre el proceso de asentamiento de la zona de separación central y los cimientos de suelos blandos de la calzada; la presión de poro del agua de la base de roca blanda se disipa en diversos grados. De acuerdo con los resultados de monitoreo del asentamiento y la presión del agua de los poros, los pozos de arena en bolsas son más adecuados para el tratamiento de ingeniería de cimientos de rocas blandas en humedales hidrológicos. Los resultados de la investigación pueden proporcionar una referencia para el estudio, el cálculo y el diseño de la consolidación y la deformación de los cimientos de rocas blandas en humedales hidrológicos.
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