Temporal-Spatial Units Organizational Order of Supply and Demand Based on the Distribution Pattern of Travel Time and Distance
Clarifying the rules of time/distance decay and threshold values between supply and demand as-sociated with residents'travel time/distance distribution is crucial for constructing the temporal-spatial units organizational order corresponding to the(travel time/distance)standards of living and commuting circles.It is also critical for promoting the optimization of urban spatial structures using a people-oriented approach.By standardizing the 124 sets resident's travel time/distance distributions with significant differ-ences relative to their average travel time/distance,a pattern emerges where relative travel time/distance initially increases and then decreases.The explanatory mechanism for the relative travel time/distance dis-tribution is constructed using the scale utility and decay utility of relative travel time/distance,and its func-tion model is fitted and verified,resulting in a negative exponential function with a parameter of 2.07.Af-ter converting the relative travel time/distance distribution into a cumulative proportional distribution,a sta-ble 2:1 ratio is obtained between the travel time/distance threshold and the average travel time/distance.Us-ing this distribution pattern analysis as the foundation for the temporal-spatial units organization of supply and demand corresponding to the travel time/distance standards of living and commuting circles,an organi-zational order of the same-level temporal-spatial supply and demand units is constructed.Within a city gridded roadway network,this order centers on supply facilities with travel time/distance thresholds as the boundary length and four-corner alignment.Additionally,by introducing the relationship among different travel mode speeds,a fundamental unit structural order that aligns with four-level residential units and four-level commuting units is established.
living circlecommuting circledistribution of travel time/distancedistance decaytravel time/distance thresholdtemporal-spatial units of supply and demandfundamental units of travel modes
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