| 摘要 |
<P>PROBLEM TO BE SOLVED: To greatly reduce the construction period and construction cost of an underwater rubblestone foundation having a firm top shoulder where spreading compaction has been carried out by a weight. <P>SOLUTION: The height H' is made a little higher than a projected height H and the crown width W' is made a little wider than a projected crown width W. A section corresponding to the widened both side parts L is expressed by tentative crown shoulder sections S', S' and the inclination of the slope faces G', G' is formed in a natural inclination, in the rubble mound M. After that, the weight P is freely dropped to repeatedly execute the spreading compaction from the central part of the crown to the tentative crown shoulder sections S', S' and to consolidate and compact the crown height H' into the projected height H. Subsequently, the rubbles of the tentative crown shoulder sections S', S' are collapsed by the weight P to change the crown width W' to the projected crown width W, the projected crown shoulder sections S, S are exposed in the outward edge and the slope faces G', G' of the natural inclination in the outward edge are formed in projected slope faces G, G. <P>COPYRIGHT: (C)2003,JPO |
