300kN轨下垫板静刚度试验用于测定弹条Ⅶ型扣件P7轨下垫板静刚度。通过HRJ300kN静刚度试验机向轨下垫板施加垂向载荷,测定在最大和最小荷载下轨下垫板的最大和最小垂向位移,计算轨下垫板静刚度。
300kN垫板静刚度试验机,加载钢板300x150x40mm,支撑钢板340x200x25mm,0~10mm位移传感器,绘制-位移曲线,HRJ Tests;采集频率不低于50Hz,加载头周边等间距测定加载钢板垂向位移,以60kN/min±10kN/min速度加载至100kN,分别记录荷载加至F1和F2时加载钢板的位移,计算位移平均值,F1和F2分别为20kN和90kN。HRJ Tests;用公式计算轨下垫板静刚度。重复上述试验两次,每次卸载后停留1min再继续加载,以第三次试验值作为轨下垫板静刚度。
轨下垫板安装在钢轨和混凝土轨枕之间,缓冲车辆通过路轨时所产生高速振动和冲击,保护路基和轨枕,对信号系统进行电绝缘;300kN橡胶垫板静刚度试验;300kN塑胶垫板静刚度试验;300kN减震垫板静刚度试验;HRJ Tests;300kN绝缘垫板静刚度试验;300kN铁路垫板静刚度试验;300kN弹性垫板静刚度试验机;HG/T3328铁路混凝土枕轨下用橡胶垫板;TB/T3395.1-2015;TB/T3395.2-2015弹条Ⅳ型扣件;TB/T3395.3-2015弹条V型扣件;TB/T3395.4-2015;WJ-7型扣件;TB/T3395.5-2015;WJ-8型扣件;TB/T1495.2第1号修改单;HRJ Tests;I型扣件弹条;TB/T3065.2第1号修改单;Ⅱ型扣件弹条;TB/T2626第1号修改单;TB/T2626-1995/XG1-2018;TB/T3514-2018客货共线铁路道岔用橡胶垫板;TB/T3515.2-2018扣件;TB/T3515.3-2018橡胶套靴;HRJ Tests;TB/T3515.4-2018块下垫板;500kN轨枕静载试验机;600kN轨道板静载试验机;3000kN钢轨静弯试验机;1000kN混凝土管片抗弯试验机;1MPa混凝土管片抗渗漏检测;500kN隧道管片抗拔试验;20kN弹条疲劳试验机;150kN轮毂旋转弯曲疲劳试验机;43~75kg/m钢轨垫板静刚度试验;TB/T2341.4;TB/T2341.3;TB/T2341.2;TB/T2341.1;
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