In recent years, there has been a significant surge in infrastructure development in hilly regions worldwide, which includes the construction of buildings. Due to the limited space, buildings are often constructed near vertical cuts on the jointed rock masses. An excavation wall is generally constructed in these projects to support the jointed rock masses and building foundations. Many studies are available on the bearing capacity of a foundation on jointed rock mass. However, very few investigations are available on the bearing capacity of the foundation on jointed rock mass supported by an excavation wall. The present study aims to study an aspect of the above-stated problem. The study employs 2D physical model tests to investigate the effect of the position of the foundation from an excavation wall or vertical cut in the case of orthogonal jointed rock masses. The physical model test results show that the footing position influences the ultimate bearing capacity of the foundation and its load-settlement behavior, as well as the lateral movement of the excavation wall. The present set of experiments revealed that if the foundation is kept at a 2B distance from the excavation wall or vertical cut, then the bearing capacity and load-settlement behavior is the same as a foundation on a jointed rock mass without any vertical cut.

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Influence of Footing Position on the Bearing Capacity and Load-Settlement Behavior of a Foundation on a Jointed Rock Mass with Vertical Cut

  • Argha Biswas,
  • Mahendra Singh,
  • Aditya Singh

摘要

In recent years, there has been a significant surge in infrastructure development in hilly regions worldwide, which includes the construction of buildings. Due to the limited space, buildings are often constructed near vertical cuts on the jointed rock masses. An excavation wall is generally constructed in these projects to support the jointed rock masses and building foundations. Many studies are available on the bearing capacity of a foundation on jointed rock mass. However, very few investigations are available on the bearing capacity of the foundation on jointed rock mass supported by an excavation wall. The present study aims to study an aspect of the above-stated problem. The study employs 2D physical model tests to investigate the effect of the position of the foundation from an excavation wall or vertical cut in the case of orthogonal jointed rock masses. The physical model test results show that the footing position influences the ultimate bearing capacity of the foundation and its load-settlement behavior, as well as the lateral movement of the excavation wall. The present set of experiments revealed that if the foundation is kept at a 2B distance from the excavation wall or vertical cut, then the bearing capacity and load-settlement behavior is the same as a foundation on a jointed rock mass without any vertical cut.