Since the launch of the reform and openingin China, the civil aviation service inJiangsu Province has been developed. ByJune 1996, nine airports scattered across theprovince in Nanjing Dajiaochang, WuxiShuofang, Chang...Since the launch of the reform and openingin China, the civil aviation service inJiangsu Province has been developed. ByJune 1996, nine airports scattered across theprovince in Nanjing Dajiaochang, WuxiShuofang, Changzhou Benniu, Nantong Xing-dong and Rugao, Lianyungang Baitapu,Xuzhou Daguozhuang and Yancheng andSuzhou Guangfu have opened services tothe public. Apart from Yancheng展开更多
High performance concrete originated in the generation of high strength concrete, and it is a new high technology of concrete, is in common with high quality and in concrete. High durability on the perspective of impr...High performance concrete originated in the generation of high strength concrete, and it is a new high technology of concrete, is in common with high quality and in concrete. High durability on the perspective of improvement and become, use a lot of high quality raw materials and modern technology, is the main development direction of concrete. Because its comprehensive performance by the superiority of the focus of the society, the strict construction technology in the extensive application in the highway bridge, high performance can the use of concrete can improve the efficiency of its safety and avoid unnecessary accidents展开更多
To introduce foreign capital for the municipal highway construction is a great measure to meet the development of the socialist market economy and to reform the investment system for the municipal highway construction...To introduce foreign capital for the municipal highway construction is a great measure to meet the development of the socialist market economy and to reform the investment system for the municipal highway construction. The aim of the reform lies in taking the construction and management of the municipal highway facilities as an industry to operate, widening the investment channel of the municipal highway construction and gradually forming a benign cycle of investment-construc-展开更多
EDITOR＇S NOTE： Sunita Dwivedi, a writer from India, visited Tibet on June 8-19, 2005. After she went back home, she wrote a story for Amar Ujala of India. Following is her story.
Relationships among ground ice, Quaternary soil type, vegetation cover, digital terrain model (DTM), permafrost ground temperature and topographic units are applied. Using comprehensive evaluated method and coding int...Relationships among ground ice, Quaternary soil type, vegetation cover, digital terrain model (DTM), permafrost ground temperature and topographic units are applied. Using comprehensive evaluated method and coding interpolation, spatial distribution of ground ice in permafrost regions along Qinghai-TibetanHighway (QTH)is modeled according to GIS spatial analysis. Comparing with result, model precision can be approached to 81.2%. Its study precision can satisfy engineering need for a small-scale展开更多
The safety of highways with a high ratio of bridges and tunnels is related to multiple factors,for example,the skid resistance of the pavement surface.In this study,the distribution of accidents under different condit...The safety of highways with a high ratio of bridges and tunnels is related to multiple factors,for example,the skid resistance of the pavement surface.In this study,the distribution of accidents under different conditions was calculated to investigate the relationship between the road skid resistance and the incidence of traffic accidents based on the traffic accident data of the Yuxiang highway.Statistical results show that weather conditions and road alignment may affect traffic accidents.The correlation analysis method was used to study the relationship between three factors and traffic accidents.The results show that road alignment,weather conditions and road skid resistance are related to the incidence of traffic accidents.The traffic accident prediction models were established based on back propagation neural network to verify the correlation analysis results.It is confirmed that road alignment,weather conditions and road skid resistance are the factors that affect traffic accidents.展开更多
A type of recycling agent was developed and its use for modifying used asphalt is described.The results show that the viscosity and three main properties of the aged asphalt were remarkably improved.With 5% - 7% ...A type of recycling agent was developed and its use for modifying used asphalt is described.The results show that the viscosity and three main properties of the aged asphalt were remarkably improved.With 5% - 7% content of recycling agent, the main properties of recycled asphalt comported with China GB asphalt standard AH-70 and the recycled asphalt concrete could be used as high grade highway.Furthermore,the recycling mechanism of the aged asphalt is discussed.展开更多
文摘Since the launch of the reform and openingin China, the civil aviation service inJiangsu Province has been developed. ByJune 1996, nine airports scattered across theprovince in Nanjing Dajiaochang, WuxiShuofang, Changzhou Benniu, Nantong Xing-dong and Rugao, Lianyungang Baitapu,Xuzhou Daguozhuang and Yancheng andSuzhou Guangfu have opened services tothe public. Apart from Yancheng
文摘High performance concrete originated in the generation of high strength concrete, and it is a new high technology of concrete, is in common with high quality and in concrete. High durability on the perspective of improvement and become, use a lot of high quality raw materials and modern technology, is the main development direction of concrete. Because its comprehensive performance by the superiority of the focus of the society, the strict construction technology in the extensive application in the highway bridge, high performance can the use of concrete can improve the efficiency of its safety and avoid unnecessary accidents
文摘To introduce foreign capital for the municipal highway construction is a great measure to meet the development of the socialist market economy and to reform the investment system for the municipal highway construction. The aim of the reform lies in taking the construction and management of the municipal highway facilities as an industry to operate, widening the investment channel of the municipal highway construction and gradually forming a benign cycle of investment-construc-
文摘EDITOR＇S NOTE： Sunita Dwivedi, a writer from India, visited Tibet on June 8-19, 2005. After she went back home, she wrote a story for Amar Ujala of India. Following is her story.
文摘Relationships among ground ice, Quaternary soil type, vegetation cover, digital terrain model (DTM), permafrost ground temperature and topographic units are applied. Using comprehensive evaluated method and coding interpolation, spatial distribution of ground ice in permafrost regions along Qinghai-TibetanHighway (QTH)is modeled according to GIS spatial analysis. Comparing with result, model precision can be approached to 81.2%. Its study precision can satisfy engineering need for a small-scale
基金supported by grants from the National Natural Science Foundation of China (Grant No.52008069)National&Local Joint Engineering Laboratory of Traffic Civil Engineering Materials (Grant No.LHSYS-2021-001).
文摘The safety of highways with a high ratio of bridges and tunnels is related to multiple factors,for example,the skid resistance of the pavement surface.In this study,the distribution of accidents under different conditions was calculated to investigate the relationship between the road skid resistance and the incidence of traffic accidents based on the traffic accident data of the Yuxiang highway.Statistical results show that weather conditions and road alignment may affect traffic accidents.The correlation analysis method was used to study the relationship between three factors and traffic accidents.The results show that road alignment,weather conditions and road skid resistance are related to the incidence of traffic accidents.The traffic accident prediction models were established based on back propagation neural network to verify the correlation analysis results.It is confirmed that road alignment,weather conditions and road skid resistance are the factors that affect traffic accidents.
文摘A type of recycling agent was developed and its use for modifying used asphalt is described.The results show that the viscosity and three main properties of the aged asphalt were remarkably improved.With 5% - 7% content of recycling agent, the main properties of recycled asphalt comported with China GB asphalt standard AH-70 and the recycled asphalt concrete could be used as high grade highway.Furthermore,the recycling mechanism of the aged asphalt is discussed.
