This paper theoretically analyzes the mechanism of truss bolt system, and gives the design of coal roadway support according to the characteristics of the "Three-soft" coal roadway.
从理论上分析了桁架锚杆系统的作用机理，并针对“三软”全煤巷道的特点，制定了全煤顺槽桁架支护方案。
Secondly, the design of two typical joint of the mega frame, the joint of outrigger to super-column and the long bolt joint of the belt truss, were checked.
介绍了基于性能的节点设计原则，研究了伸臂桁架与巨型柱连接节点、环带桁架螺栓拼接节点两类典型节点。
Steel Series: steel with high strength large hexagon head bolts, torsion shear bolt connections made, the steel truss joints of high strength bolts, studs, drill the end of wire.
钢结构系列：钢结构用高强度大六角头螺栓，扭剪型螺栓连接副，钢网架球节点用高强度螺栓，焊钉，钻尾丝等。
The parameters of suspension roof support were determined based on hanging action with a bolt-wire or cable truss.
应用锚杆兜吊和锚索悬吊两种作用设计了锚杆支护参数。
The bolt truss were used to reinforce a layer concrete beam in order to simulate a mine roadway support in a mine layer roof.
对锚拉支架支护层状顶板进行了模拟试验和参数优化研究；
The bolt truss were used to reinforce a layer concrete beam in order to simulate a mine roadway support in a mine layer roof.
对锚拉支架支护层状顶板进行了模拟试验和参数优化研究；
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