东南大学学报(自然科学版)
東南大學學報(自然科學版)
동남대학학보(자연과학판)
Journal of Southeast University (Natural Science Edition)
2015年
6期
1197-1202
,共6页
项昀%王炜%王昊%李烨%郑敦勇%刘兵
項昀%王煒%王昊%李燁%鄭敦勇%劉兵
항윤%왕위%왕호%리엽%정돈용%류병
货运方式%分担率%运距%综合运输体系%集计数据
貨運方式%分擔率%運距%綜閤運輸體繫%集計數據
화운방식%분담솔%운거%종합운수체계%집계수거
freight transportation%mode split rate%transportation distance%comprehensive transpor-tation system%aggregate data
为优化货运交通结构并合理配置货运交通资源,研究了综合运输体系下基于运距的货运方式分担率。通过对国内城市间不同货运量与运距的集计数据进行统计分析,确定货运量与运距的函数关系式。随后,构建货运方式分担率运距模型,并获取货运方式分担率运距曲线。研究结果表明,各货运方式分担率随运距变化呈现出特定的分布规律。公路货运分担率运距曲线呈单调递减趋势,在50~500 km 运距范围内的分担率超过40%;铁路货运分担率运距曲线呈先增后减趋势,拐点出现在600~700 km 之间;水路货运分担率运距曲线呈单调递增趋势;航空货运分担率运距曲线在150~700 km 运距范围内呈缓慢递增趋势,700~1900 km 运距范围内快速递增,运距超过1900 km 后趋于平缓。
為優化貨運交通結構併閤理配置貨運交通資源,研究瞭綜閤運輸體繫下基于運距的貨運方式分擔率。通過對國內城市間不同貨運量與運距的集計數據進行統計分析,確定貨運量與運距的函數關繫式。隨後,構建貨運方式分擔率運距模型,併穫取貨運方式分擔率運距麯線。研究結果錶明,各貨運方式分擔率隨運距變化呈現齣特定的分佈規律。公路貨運分擔率運距麯線呈單調遞減趨勢,在50~500 km 運距範圍內的分擔率超過40%;鐵路貨運分擔率運距麯線呈先增後減趨勢,枴點齣現在600~700 km 之間;水路貨運分擔率運距麯線呈單調遞增趨勢;航空貨運分擔率運距麯線在150~700 km 運距範圍內呈緩慢遞增趨勢,700~1900 km 運距範圍內快速遞增,運距超過1900 km 後趨于平緩。
위우화화운교통결구병합리배치화운교통자원,연구료종합운수체계하기우운거적화운방식분담솔。통과대국내성시간불동화운량여운거적집계수거진행통계분석,학정화운량여운거적함수관계식。수후,구건화운방식분담솔운거모형,병획취화운방식분담솔운거곡선。연구결과표명,각화운방식분담솔수운거변화정현출특정적분포규률。공로화운분담솔운거곡선정단조체감추세,재50~500 km 운거범위내적분담솔초과40%;철로화운분담솔운거곡선정선증후감추세,괴점출현재600~700 km 지간;수로화운분담솔운거곡선정단조체증추세;항공화운분담솔운거곡선재150~700 km 운거범위내정완만체증추세,700~1900 km 운거범위내쾌속체증,운거초과1900 km 후추우평완。
In order to optimize the structure of the freight mode and reasonably allocate transportation resource,the mode split rate of freight transportation based on the transport distance in the compre-hensive transportation system is studied.By statistically analyzing the aggregate data of different in-ter-city freight volumes and transport distances in China,the functional relationship between the freight volume and the transport distance is determined.Then,the mode split rate of the freight transportation-transport distance (MSRFT-TD)model is constructed,and the corresponding MSR-FT-TD curve is obtained.The results show that there is specific distribution of the mode split rate of freight transportation with the change of the transport distance.The highway MSRFT-TD curve de-creases monotonically and stays over 40% when the transport distance ranges from 50 to 500 km. The railway MSRFT-TD curve first increases and then decreases with a inflection point between 600 and 700 km.The waterway MSRFT-TD curve monotonically increases.The airway MSRFT-TD curve increases slowly with the transport distance from 150 to 700 km,and rises rapidly from 700 to 1 900 km;when the transport distance is over 1 900 km,the curve gradually levels off.