ICE - Institution of Civil Engineers - Virtual Library

Proceedings.] MILES ON CREEP OF RAILS. 243 " Creep of Rails." By HAIXY POWELL MILES,M. Inst. C.E. OSE of the many difticultieswith which the railway maintenance engineer has to contend, in the efEcient and economical maintenance of the roads under his charge, is dealing with, and preventing as far as possible, the creeping or movement of the rails in a longitudinal direction. In recent years, owing to the increased volume of traffic andthegreater weightand speed of, thetrains,this difficulty has become more acute...

Proceedings.] CORRESPONDENCE ON RAIL-CREEP. 267 just referred could be looked upon as having a yielding bed, whereas Mr. Miles the chalk formed a more substantial bed ; and yet the creep was greater in the middle third than in the other two sections. With regard to changes of temperature, no doubt they had a very great effect on creep, hut not so much, perhaps, as some people imagined. H e had underhischargeseverallongtunnelsranging in length from 33 miles to 2 miles, and he found that although the temperature was more uniform in those tunnels the creep was about the same ; in fact there was more creep a t the centre of the long t,unnels than at the ends...

254 DISCUSSION QN RAIL-CREEP. [Minutes of Discussion. The President. x r , &1iles. Mr.Grjerson. The PRESIDENT a vote of thanks to the Anthors. moved Mr. MILES exhibited a number of lantern slides illustrative of the subject of the Papers. Nr. W. W. GRIERSON remarkedthat while some of the causes of creep perhaps were not fully understood, there was in his opinion no doubt to as the more important. It wns a matter of common observation thatduringthe passage of a train t11e portion of a rail immediately under and on each side of :I, wheel assumed which shape a might be compared with tht? trough of a shallow wave ; the wheel always had infront of it a slight obstructionthe in form of >L miniature gradient, it never succeeded in surmounting, but) which, in one sense, it...

REEVES ON RAIL-CREEP. 227 (Paper:No. 4213.) Rail-Creep." By FRAXK REEVES, Inst. C.E. M. IT occurred totheAuthor some yearsago thatlightmight be thrown on the cause of rail-creep by making a few simple experiments. H e began by laying a planed white-pine lath about 14 inch by inch, and about 2 . 5 metres (8 feet) long on a planed hardwood bench (Fi!/s. l ) ; upon passing a wooden wheel about 12 inches by 2 inches over it several times in succession, in one direction, the lath was found t o have moved bodily about 2 millimetres in the direction of travel, the total amountof the latter having been about 14 metres...

Papers.] HALES ON RAIL-CREEP. 373 (Paper No. 4 2 G l .) " Rail-Creep." By WILLIAM PRIOR HALES, Inst. C.E. M. ON several sections of the Tasmanian Railways, rail-creep has been stopped by anchoring the rails to a piece of timber buried about 2 feet G inches inthe ground below therail level. The anchor consists of two clips of 2-inch by &-inch iron fitted to the rail, secured by two $-inch pins and cotters through the web of the rail and through the eyebar (Figs...

CLARKE AND WALLEY ON CREEP O F HIGH-TENSILE STEEL WIRE 107 Paper No. 5882 " Creep of High-Tensile Steel Wire * " and b Y Noel WiUiam Bailey Clarke, M.Eng., M.I.C.E., Francis Walley, M%., A.M.I.C.E. SYNOPSIS The Paper describes experimental work carried out in order to determine quantitatively the losses which occur in stress in a cold-worked high-tensile steel wire when stretched at a constant or near-constantlength.Theapparatus used is described and the stress 108s is shown to be a function of the ratio of the applied stress to the proof or ultimate stress...

136 DISCUSSION ON CREEP OF HIGH-TENSILE STEEL WIRE Discussion The Authors introduced the Paper with the aid of a series of lantern slides. Mr C. L. Champion observed that the Authors had made a valuable contribution to the very limited data on the creep of steel a t normal temperatures. The data were scanty because, of course, the problem was a very recent one. A great deal of work had been done on the creep of steel a t high temperatures, and that was important in a number of fields, but at the stresses which had normally been used it had been considered that the creep a t ordinarytemperatures was negligible...

CORRESPONDENCE 359 CORRESPONDENCE on a Paper published in Proceedings, Part I, March 1953 Paper No. 5882 `I Creep of High-Tensile Steel Wire " t by Noel William Bailey Clarke, M.Eng., M.I.C.E., and Francis Walley, M.Sc., A.M.I.C.E. Correspondence Mr A. J. H, & referring to the Authors' mention of the high creep values found by Simon and Xercavins, observed that those values were employed in practice by S.T...

STOSEY ON RAIL-CREEP ox INDIAN RAILWAP-BRIDGES. 413 SECT. 11.-OTHER SELECTED PAPERS. (Paper No. 4251.) " Rail-Creep on Indian Railway-Bridges." By EDWARD WALLER STONEY, C.I.E., M. Inst. C.E. to experienceson the MadrasRailway,upon which the Author spent 36 years, first as a District Engineer, and finally as Chief, On the original system of the railway there were some miles out of a total of 850, of a standard type of bridge, consisting of spans of 70 feet centres, continuous over every other pier...

Serio River Bridge: creep and incremental launch M. Rosignoli DrIng The Serio River Bridge is one of the most significant applications of the incremental launch construction technique in Italy, and one of the few such constructions that has a bicellular cross-section. The control techniques required to construct such a long bridge (800 m), the effects of creep and the solutions to the problems encountered in restarting construction and completing the bridge after a long delay in the work are described. Keywords: bridges; design methods & aids; field testing & monitoring; stress analysis Proc...