桐梓河特大桥挂篮设计探讨

Probe into Design of Hanging Baskets for Tongzi River Super-large Bridge

桐梓河特大桥是仁赤高速公路全线节点控制性工程,其施工进度直接关系到全线通车计划。悬浇梁施工为该桥施工控制重点,挂篮优劣关系到主桥悬浇梁施工质量及进度。通过优化主桁架的结构形式,提高了挂篮的整体稳定性,使得挂篮经受住了高山峡谷大风考验,保证了大桥的施工质量。

Tongzi River Super-large Bridge is a control project for nodes along the whole line of Renhuai-Chishui Expressway, and its construction progress concerns traffic plan of the whole line directly. Construction of suspension girders is a control emphasis in construction of the bridge, strengths and weaknesses of hanging baskets concern construction quality and progress of suspension girders of main bridge. The integral stability of hanging baskets is improved by optimizing structural form of main truss, enabling them to withstand test of gale in mountains and gorges so as to guarantee construction quality of the bridge.