论文部分内容阅读
结合多尺度有限元建模与4-D有限元建模思路,提出混合梁斜拉桥钢混结合区4-D多尺度有限元建模方法,以重庆永川长江大桥为工程背景建立其钢混结合区4-D多尺度有限元模型,同时建立传统精细有限元模型作为对比。比较结果表明:4-D多尺度模型不受失真区影响,结果更为准确;采用4-D多尺度有限元能够计算监测钢混结合区从施工建造至大桥服役全过程的实时力学响应及其变化,综合多个关键阶段的力学响应,获得更为安全可靠的设计依据。
Combined with the multi-scale finite element modeling and 4-D finite element modeling, a 4-D multi-scale finite element modeling method for composite beam-stayed bridge with steel-concrete hybrid bridge is proposed. Taking Chongqing Yongchuan Yangtze River Bridge as the engineering background, In combination with the 4-D multi-scale finite element model, a conventional fine finite element model was established as a comparison. The results show that the 4-D multi-scale model is not affected by the distorted zone and the result is more accurate. The 4-D multi-scale finite element method can be used to calculate the real-time mechanical response of the steel-concrete combined zone during its service from the construction to the bridge Change, the mechanical response of a number of key stages, to obtain a more secure and reliable design basis.