钢绞线整束挤压式拉索锚具抗滑性能的试验研究

钢绞线整柬挤压拉索的锚具在长期受载作用下，是否产生钢绞线滑脱现象是一个很受关注的问题，本研究（项目）为此进行了模拟试验。首先，对单根钢绞线挤压拉索锚具开槽，释放了挤压应力．经静载试验证明没有钢丝滑脱；而后，对19孔钢绞线挤压高温应力退火后进行静载试验，钢绞线在自由段破断，而不是在锚具处滑脱。试验证明，挤压拉索锚具的抗滑性能是比较可靠的。

Experimental Study on the Sliding Resistance of Steel Strand Whole Bundle Squeezed Cable Anchorage

The issue of whether steel strand slippage occurs in the anchorage of the whole bundle of steel strand extrusion cables under long-term load is a highly concerned issue. This study (project) conducted simulation experiments for this purpose. Firstly, a groove was made on the anchorage device of a single steel strand extrusion cable to release the extrusion stress. Static load tests showed that there was no steel wire slipping; Then, a static load test was conducted on the 19 hole steel strand after high-temperature stress annealing, and the steel strand broke in the free section instead of slipping off at the anchorage. The experiment has proven that the anti slip performance of the extruded cable anchor is relatively reliable