下承式提篮拱桥设计与施工技术探索

Probe into Design and Construction Technology of Through-style X-style Basket Arch

江门市东华大桥主桥为跨径118m带副拱的下承式提篮拱桥,一跨跨越江门河水道,采用步履式同步顶推工艺施工。介绍桥梁结构设计与施工方案,阐述拱桥设计与施工间相互配合的创新思路与主要技术特点;通过施工和运营考验,说明该桥设计施工总体方案在经济性、安全性上具有一定的优势。

The main bridge of Donghua Bridge is a through tied-arch bridge with subarch,it crosses the Jiangmen River with a single span of 118 m,constructed by using track thrusting technology,In this paper,the authors introduce the program content of bridge structure design and construction,illustrate the innovative ideas and major technical features based on the mutual cooperation of arch bridge design and construction,and through the test of actual construction and specific operations,it shows that the general design and construction planning of this bridge has great advantages in economical efficiency and safety.