Rocks encountered in foundations of heavy structures are invariably intersected by discontinuities (joints). In the past, several studies have been performed by researchers to incorporate the effect of fully persistent joints in the assessment of the load-carrying capacity of rocks. However, in the field, the joints are non-persistent, and an assumption of full persistency will underestimate the capacity. Recently, Shaunik & Singh have studied the influence of non-persistency, number of joint segments and discontinuity orientation on the strength behaviour of rock specimens (Shaunik and Singh, 2019). Bell’s approach can be used to obtain the bearing capacity of shallow foundations placed in jointed rocks. In the present study, results of the experimental work (Shaunik and Singh, 2019) conducted by Shaunik & Singh have been used to suggest expressions by extending Bell’s approach for computing bearing capacity of the foundation placed near the crown of a rock slope. Easy to use design charts are also presented for field application. Finally, a real-life problem from Indian Garhwal Himalayas is considered, and the approach suggested in this study is utilised to obtain the bearing capacity of a bridge foundation as a function of uniaxial compressive strength (UCS) of intact rock, joint friction, spacing and orientation of joint, non-persistency and number of joint segments.

在重型结构的地基中遇到的岩石总是被不连续（节理）相交。过去，研究人员已经进行了几项研究，以将完全持久节理的影响纳入岩石的承载能力评估中。但是，在现场，关节是非持久性的，假设完全持久会低估这种能力。最近，Shaunik＆Singh研究了非持久性，节段数和不连续性取向对岩石试样强度行为的影响（Shaunik和Singh，2019）。贝尔的方法可以用来获得放置在节理岩石中的浅层基础的承载力。在本研究中，Shaunik＆Co.进行的实验工作的结果（Shaunik和Singh，2019年）通过扩展Bell的方法来计算放置在岩石斜坡顶部附近的地基的承载力，Singh已被用来建议表达式。还提供了易于使用的设计图表，供现场应用。最后，考虑了来自印度Garhwal喜马拉雅山脉的一个现实问题，并且采用了这项研究中提出的方法来获得桥梁基础的承载力，该函数是完整岩石的单轴抗压强度（UCS），接头摩擦力，间距的函数关节的方向和方向，非持久性和关节段的数量。