A pedestrian bridge in a residence quarter in Huzhou is designed to be a composite arch bridge, with 2 bearing arches and 1 tension arch, asymmetrical as a whole.
湖州市某住宅小区人行桥设计采用组合拱桥，包括两个承压拱和一个拉力拱，整体上呈不对称形。
Truss arch bridge can also get better displacement coordination among three trusses by adjusting the tension of hanger rod.
桁拱桥也可通过调节吊杆的拉力来使桁间位移进一步协调。
Conclusion: Relieving the tension of anastomosis, enlarging the outlet of thorax and the space posterior to aortic arch are key steps for preventing anastomotic fistula.
结论：降低吻合口张力，保证胸腔入口、主动脉弓后间隙宽畅是避免吻合口瘘发生的关键。
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