Everyday Pedestrian Infrastructure Resilience in High-Density CBDs: A Multi-Source Walkability Assessment of Beijing Guomao

High-density central business districts (CBDs) often appear highly walkable because they combine transit accessibility, functional density and active frontages. Yet their pedestrian environments may lose usability under routine disturbances such as crowding, e-bike encroachment, blind-path obstruction and effective-width erosion. This study reframes walkability as baseline pedestrian capacity and everyday resilience as the ability of that capacity to remain safe, continuous, inclusive and comfortable under ordinary urban stressors. Taking Beijing Guomao as a case, we integrated a field street audit, sidewalk-width measurement, route timing, traffic-interference observation, POI-based vitality assessment and 145 valid questionnaires. The objective indicator table produced a capacity-oriented score of 0.868 on a 0–1 scale, while the perception index was 3.17/5. The gap was explained by weak disturbance-sensitive indicators: non-motorized vehicle intrusion (0.46), blind-path continuity (0.60), motor-vehicle encroachment (0.67) and acoustic comfort (0.72). Field measurements showed mean physical and effective sidewalk widths of 3.62 m and 2.36 m, respectively. The mean section-level width loss was 30.9%, while the maximum loss of 88.2% occurred at one severely obstructed section, where the effective width was 0.50 m. The findings suggest that CBD pedestrian improvement should shift from facility provision to operational resilience through width recovery, micromobility governance, barrier-free continuity and last-mile route integration.