斜張橋懸臂施工過程之結構分析與探討

Study on Structural Analysis of Cantilever Erection Process for Cable-Stayed Bridges

宋裕祺(Yu-Chi Sung) ； 王俊穎(Chun-Ying Wang) ； 張英發(Eng-Hwa Teo)

《結構工程》 30卷2期 (2015/06) Pp. 5-22

https://doi.org/10.6849/SE.201506_30(2).0001

摘要

長跨徑斜張橋在建造時常須採行懸臂施工方式，施工過程中橋梁結構型態、邊界條件及其受力狀況會隨施工階段之更迭而變化，為能確保閉合階段斜張橋之結構行為接近全橋設計的成果，懸臂施工過程之結構分析實屬重要。為此，本研究結合遺傳演算法（GA）與粒子群演算法（PSO），建立自動求解之最佳化正裝分析流程，並以社子大橋為案例進行分析與探討，結果顯示本文所提方法可得到各施工階段合理的鋼索預力值與結構狀態，供為擬訂施工規劃之參考。

關鍵字

人工智慧 ； 最佳化分析 ； 施工階段分析

並列摘要

Cantilever erection method is popularly used in construction of long span cable-stayed bridges. The structural configuration, boundary condition and construction loading are changed sequentially during erection process. In order to make the eventual structural performance at final erection stage consistent to the design of complete bridge, structural analysis of erection process is indeed important. This study used hybrid GA to develop an automatic analysis for cantilever erection process of the cable-stayed bridges. The case study was performed and the analytical results were discussed. The results obtained show the method developed can deal with the optimum construction planning of cable-stayed bridges using cantilever erection.

並列關鍵字

Artificial intelligence ； Optimization analysis ； Construction stage analysis