Record Details
page 12
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 12 Results of the Currant Creek Pipeline Impact Loading Study, Central Utah Project, page 12 |
| Coverage | Electronic reproduction; |
| Format | 12 text/PDF |
| Rights | Brigham Young University; http://lib.byu.edu/about/copyright/generic.php Public Domain Public |
| Language | English; eng; en |
| Relation | Central Utah Project; Western Waters Digital Library; the pressures during run 9 as the front tire crossed the slab and figure 21 is the corresponding estimated impact factor profile appendix I 1 D explains the procedure used to develop these profiles the estimated impact factor profiles are included only to emphasize the potential for large impacts to occur between pressure measurement locations from these profiles it is estimated estimatedthat that an impact impactfactor factor as high as 5 may hae have occurred between pressure meters during this study this will be discussed in more detail later in this section vertical oscillations of the scraperie scra scraper perie perle ie bouncing had the greatest influence on the magnitude of recorded pressures and on the computed impact factors the impactfactor impact factor facton bar graphsfortest graphs for fon test 11 shown on figures direction of travel stress meter meten meren N NU 0 0 pressure sensitive switches PLAN stress meter 11 I 1 0 0 FT T T 0 0 3 a 0 0 0 0 concrete slab ELEVATION figure 7 position of tire location switches with respect to soil stress meters strip chant chart chont F 45r loha lohn iok jok fl IV conison carlson amplife amplify tope tape stress meter record 45a loks figure 8 instrumentation system general wiring diagram 9 through 13 and the estimated impact factor profiles for test 7 runs 7 and 9 see figs 19 and 21 reflect the effect scraper oscillations hadonthecom had on the computed impact factors this is particularly evident on the impact factor plot for test 11 runs 5 and 6 see figs 12 and 13 which show peak impact factors occurring at every third stress rrt rrjtjr r location the force which a vertically oscillating scraper applies to the ground is proportional to its mass and its vertical downward deceleration force ass x acceleration the mass of the scraperremained scraper remained constant during each test therefore when the scraper crossed the slab the maximum surface loading occurred where the vertical downward deceleration was greatest it is possible that pressures induced by the bouncing scraper on the slab may have been greater than the pressures recorded by the eight stress meters if the maximum load for any run was applied on the ground surface between two stress meters it can be assumed that neither stress meter would record the maximum pressure felt by the slab this condition is indicated by the pressure recording that was made as the f front ront aront tire crossed the concrete slab during test 7 runs 7 a and nd 9 f figs 18 a and nd 20 respectively a and nd the corresponding approximate impact factor profiles figs 19 and 21 respectively large front tire impacts occurred on the ground surface between stress meters no 1 and 2 and stress meters no 3 and 4 d during duning u ri ng test 7 r run nun u n 9 f fig ig 2 21 1 th this is created two pea peaks ks on the pressure versus time plot for stress meter no 3 and distorted the shape of the pressure versus time plots of stress meters no 1 2 and 4 fig 20 vertical scraper oscillations during test 7 run 7 created similar results see figs 18 and 19 12 r 10 PCT P j COPY wyl uyl I 1 AULABLE ninilnulc flvfiij fari flri F |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/12994 |
