关键词: 悬空钢索, 弹性模量

Abstract: By measuring the prolongation, tension and radial contractibility rate of wire and rope of the over-long (39m) samples of double twisted wire rope(6×19+1, 6×37+1), the following conclusions can be obtained:1. Without displacements at both ends of suspended cable, its E_s has nothing to do with its length.2. When new wire rope is used as sample(its overtension is not tested in advance), r=0.37—0.414(r refers to the correction coefficient of E_s and tested 9 times).3. After pretension of newer wire rope, r=0.605—0.715.4. E_s is in direct proportion to the tension, and the relationship bet ween E_s and the safetly factor of tension is one variable and two degrees curve(Fig. 5).5. To deduce formula W in theoretical value of E_s in refrence[6], the corrected value of W is 2% less than the testing average valus of W, so accurate value of E_s can be obtained from formula[6].6. As to the selection of E_s, (0.37—0.414)E should be chosen for the skyline with short span (about 100m). It is suitable to choose(0.615—0.715) E for the cableway with longer span (about 500m).

Key words: Suspended wire rope, Elastic modulus