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采用了几何非线性和材料非线性等因素对大跨度钢管混凝土桁式拱桥进行结构非线性分析 ,结果表明对这种大跨 (跨径大于 30 0 m )、宽跨比小 (接近 1/ 2 0 )的钢管混凝土桁式拱桥 ,几何非线性和材料非线性的影响均较大 ,在设计和施工时不应忽略。
The nonlinear structural analysis of long-span CFST truss arch bridge with geometrical nonlinearity and material nonlinearity shows that for such large span (span more than 300 m) and small span ratio (close to 1/2 0) CFST truss arch bridge, the geometrical nonlinearity and material nonlinearity are all significant, which should not be neglected in the design and construction.