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以海口疏港快速路为实例,论述市政高架桥桥型方案选择的控制因素,并对各桥型结构选用条件及市政高架桥发展趋势进行探讨。给出了在综合考虑桥梁景观、桥下绿化、噪音、桥下行车舒适性、桥下空间二次利用等因素后的市政高架桥适宜的高度、跨径及高跨比。对在考虑桥梁建设条件、经济、环保、可实施性等因素后适宜的桥型方案选择给出建议,以期为后续城市高架桥建设提供借鉴与参考。
Taking Haikou Shugang Expressway as an example, the paper discusses the control factors of municipal viaduct bridge scheme selection, and discusses the conditions of bridge structure selection and the development trend of municipal viaduct bridge. The appropriate height, span and span ratio of the municipal viaduct are given after comprehensive consideration of the bridge landscape, the afforestation under the bridge, the noise, the driving comfort under the bridge and the secondary utilization of the space under the bridge. This paper gives some suggestions on the suitable bridge scheme after considering the conditions of bridge construction, economy, environmental protection and enforceability, in order to provide reference and reference for the construction of the following urban viaducts.