KEY TECHNOLOGIES IN THE DESIGN OF THE HUIZHOU-ZHAOQING DONGJIANG GRAND BRIDGE
To explore the stress characteristics of special cable-stayed bridge structures in complex construction environments and address design challenges,this study uses the dongjiang grand bridge as a case study.By imple-menting a special design for the edge span's dense cable segment and simulating the entire bridge construction,an asymmetrical cantilever construction design without auxiliary piers was achieved.This effectively protected the wa-ter source protection area and reduced the risks associated with high support construction in water.The study com-pares the results of code-compliant equivalent static calculations with numerical dynamic simulations to verify the reliability of the numerical model.Insights into impact forces and structural damage were obtained,providing a ba-sis for structural design.Based on refined simulation analysis results of the anchorage area of the tower-column ca-ble,the stress distribution characteristics in the anchorage area were determined,leading to targeted enhancements in structural design.This research provides valuable references for engineering design in similar construction envi-ronments.
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