Discussion on Key Indicators of Dual-Crossing Diamond Interchange Horizontal Alignment Design
Interchanges are widely used in the traffic flow of highway bridges,and the adaptation environment of different interchanges is quite different.The diamond interchange has the advantages of low cost and small area,and occupies an important position in the organization and design of urban limited space transportation.The traditional diamond interchange is often difficult to adapt to the expanding traffic demand,while the dual-crossing diamond interchange has a better traffic safety service capacity,and larger left-turn traffic flow.The key points of dual-crossing diamond interchange horizontal alignment design has received people's attention.In this paper,the key design parameters of the dual-crossing diamond interchange weaving area are analyzed,and then the VISSIM software is used to reasonably evaluate the length of the two-way four-lane weaving area in combination with an interchange project in Hubei.The study results show that,when the length of the weaving area is controlled between 100-200 m,the delay value of the data collection point at the intersection is low,and the interchange service evaluation level is relatively high.
万方数据
维普
