为了研究悬索桥中桥塔刚度对悬索桥整体刚度的影响，以西堠门大桥为原型，采用西南交通大学编制的桥梁非线性计算软件BNLAS建立了双塔单跨悬索桥计算模型，该计算模型中跨主缆的跨度为1 650 m，加劲梁为单跨简支结构体系。通过比较不同桥塔刚度（相对原型的0.7，0.8，0.9，1.0，1.1，1.2及1.3倍）情况下悬索桥受力的变化，分析桥塔刚度对悬索桥受力的影响。同时，随着越来越多的多塔多跨悬索桥的建造，笔者也研究了中间桥塔刚度变化对多塔多跨悬索桥受力的影响。

In order to study the influence of tower stiffness on suspension bridge, this paper took Xihoumen Suspension Bridge as a prototype, established its finite element model by using BNLAS (Bridge Nonlinear Analysis System), which was developed by Southwest Jiaotong University. This model is a two-mtower single-mspan suspension bridge with the main cable span of 1 650 m, and it has single-mspan simply supported girder. Then, the influence of suspension bridge structural performance with different tower stiffness was analyzed by changing the model's tower stiffness (0.7, 0.8, 0.9, 1.0, 1.1, 1.2 and 1.3 times of original tower stiffness). This paper also discussed the influence of mid-mtower stiffness in multi-mtower and multi-mspan suspension bridge.