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| VARIABLE APPLICATION FOR THE FORMULA OF APPROACHINGMETHOD SPOT BY SPOT IN ROAD BED LOFTING |
| Hu Guixian |
| Six teenth Engineering Bureau of MOR |
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Abstract The approaching method spo t by spot is the w ay g enerally used in measuring the side pile befo re the road bed const ructio n. The approx imate lo cation o f the side pile should be first measured in the cross sectio n map, then i t w ill be approached to the desig ned side pi le spo t by spo t th ro ug h calculatio n. But where the topog raphy i s chang ed during the const ructio n of road bed, the method could not be used directly in the seco nd road bed lof ting f rom the desig n v ariatio n. Thi s a rticle presents details of the va riable a pplicatio n for the fo rmula of approaching method spot by spo t during the changing const ruction co ndi tio n, taking the road bed w o rks f rom K10+ 728. 5 to K11+ 206. 75 of Badaling Ex pressw ay for ex ample. It al so appoints o ut a new rela tio n fo rmula to define the side pile lo cation, and rai ses a new method for the road side lo f ting in the complicated topog ra phic section.
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Received: 20 February 1997
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宋 成.铁道工程测量学.中国铁道出版社, 1989
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谢纫秋.路基工程.中国铁道出版社, 1994
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1997, Vol. 14 
