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中文摘要：
为了合理确定大跨度桥梁的竖弯涡振限值,首先综述了其规范值和取值依据,讨论了其主要影响因素,包括人体舒适性和行车安全;然后分别依据人体承受全身振动的评价方法和行车视距的要求,分析了考虑人体舒适性和行车安全影响的大跨度桥梁竖弯涡振限值。研究结果表明：人体舒适性是确定桥梁竖弯涡振限值时必须考虑的因素;大跨度桥梁竖弯涡振频率低,桥上工作人员可能因涡振产生极不舒适的运动病感觉,其对应的涡振限值也最严格;大跨度桥梁的高阶模态涡振可能会对行车视距造成干扰,此时行车安全成为确定涡振限值的重要因素。
英文摘要：
In order to reasonably determine the allowable magnitude of vertical vortex-induced vibration （VVIV） of long-span bridges, firstly its normative values and the corresponding premises were reviewed, and the main influencing factors were discussed, including human-body comfort and vehicle safety. Then, the allowable magnitude of VVIV of long-span bridges with consideration of human-body comfort and vehicle safety was analyzed according to the evaluation methods for whole-body vibrations and the required sight distance for vehicles on road respectively. The results indicate that human-body comfort should always be taken into account for determining the allowable magnitude of VVIV for all types of bridges. The frequencies of VVIV of long-span bridges are very low, so people who work there are susceptible to the uncomfortable motion sickness resulting from VVIV, and the corresponding allowable magnitudes of VVIV are the strictest. Higher-order modes of VVIV for long-span bridges may interrupt the determining t sight distance of drivers, and at this situation vehicle safety becomes crucial for he allowable magnitude of VVIV.
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