Against slip coefficient between friction surface of high - strength bolted connection 高强度螺栓摩擦面抗滑移系数
Testing methods for anti - slipping coefficient of high - strength bolts for steel structures 钢结构用高强度螺栓抗滑移系数的测定方法
Tests consist of three parts : material property test of panel , slippage coefficient test of bolt connection and cyclic load test of end - plate connections 试验共分3部分:钢板单向拉伸试验;连接抗滑移系数试验和端板连接循环加载试验。
Main problems are the anti - slide test report and inspection record of high strength bolts that connecting structure steels have not been provided according to the requirement of design ; since there is no measurement certificate attached to the test report issued by the jincheng mine project quality inspection station of shanxi coal mine industry administration bureau , it will not be allowed to use these test reports as the one of unit project quality control documents 主要是未按设计要求提供出钢架连接处高强度螺栓抗滑移系数试验报告和检测纪录;由山西省煤炭工业管理局晋城矿区工程质量检测站出具的试验报告无计量认证章,在今后的工程中不能再作为单位工程质量控制资料中的试验报告。
It is found that " phase produces coplanar slip and reduces the number of movable slip systems because its particles are cut by moving dislocations in deforming process , for its large critical size of cut - bypass , accordingly its strengthening contribution is anisotropic . and strengthening contribution of t1 phase is also anisotropic because it distributes on the four { 111 } slip planes while its critical size is small 研究表明,相由于颗粒的切过-绕过临界尺寸较大,在变形过程中被运动位错切过,由此产生共面滑移,减小可动滑移系数目,所以其强化具有各向异性; t _ 1相的临界尺寸较小,但分布于四个{ 111 }滑移面上,故其强化也具有各向异性。