一、概况西单商场人行天桥是北京市建委批准兴建的一个实验工程。试图通过实践来探索如何恰当运用人行过街桥去解决人车混行造成的交通阻塞问题,并从中积累不中断交通、快速施工等方面的设计与施工的经验。由于初次实践,缺乏经验,本工程在设计上必然有许多不足之处,应该认真总结, I. Overview Xidan Shopping Center pedestrian bridge is approved by the Beijing Municipal Construction Committee to build an experimental project. Try to explore through practice how to properly use pedestrians and pedestrians to solve the traffic jam caused by the mixed traffic of people and vehicles and accumulate experience in the design and construction of such vehicles without interrupting traffic and rapid construction. Due to the initial practice and lack of experience, this project inevitably has many shortcomings in design and should be seriously summarized.