The bolting design of large deformation surrounding rock usually depends on experience, one of the main reasons is the bearing capacity of bolts.
大变形围岩的锚杆支护设计一般还是采用经验类比法，主要原因之一是不能合理确定锚杆的承载能力。
This paper studies the statically bearing capacity of the fasteners with high-strength bolts possessing pretension on the shear.
本文论述具有预紧力的承压型高强度螺栓接头静力承载能力。
The bearing capacity of expansion bolts is lower than chemical-fixing bolt, but it is economical.
膨胀螺栓与化学螺栓和化学植根螺栓强度虽然较低，但其经济性非常好。
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