CAJ | 학술논문

郁江双线特大桥主桥(36+96+228+96+36) m是国内首座高速铁路钢桁梁斜拉桥。高速铁路高平顺性及安全性要求，对大跨度钢桁梁斜拉桥结构设计及建造技术均提出了更高的要求，需要系统研究与解决。根据主桥钢桁梁主桥塔梁结构半漂浮体系及上弦锚箱挂索结构设计创新特点，结合桥位地质、通航等复杂因素影响，对钢桁梁斜拉桥建造主要技术进行综述，并重点阐述主桥下部基础钻孔桩与钢围堰同步施工，围堰不分仓封底混凝土浇筑施工，主塔与钢桁梁拼装同步施工，以及主桥钢桁梁不对称悬拼及跨中合龙等新技术、新工艺，取得良好效果。
욱강쌍선특대교주교(36+96+228+96+36) m시국내수좌고속철로강항량사랍교。고속철로고평순성급안전성요구，대대과도강항량사랍교결구설계급건조기술균제출료경고적요구，수요계통연구여해결。근거주교강항량주교탑량결구반표부체계급상현묘상괘색결구설계창신특점，결합교위지질、통항등복잡인소영향，대강항량사랍교건조주요기술진행종술，병중점천술주교하부기출찬공장여강위언동보시공，위언불분창봉저혼응토요축시공，주탑여강항량병장동보시공，이급주교강항량불대칭현병급과중합룡등신기술、신공예，취득량호효과。
The main bridge of Yujiang River Double-line super major bridge, (36+96+228+96+36) m long, is the first domestic high-speed railway cable-stayed bridge with steel truss girder. Considering the high level of smooth and safety of high-speed railway, higher requirements are put forward on the structure design and construction technology of large span steel truss girder cable-stayed bridge, which needs systematic research and settlement. According to the semi-floating system of tower girder of steel truss girder as well as the innovation characteristics of cables structures design, to-gether with the impact from various factors like geology and navigation, elaboration is made on the main technologies of building steel truss girder cable-stayed bridge. In addition, some new technologies and techniques are emphasized, for example, synchronous construction of foundation bored piles and steel cofferdam under the main bridge, construction of bottom sealing by concrete casting in cofferdam, synchronous assembling of the main tower and the steel truss girder, asymmetric hanging-assembling of steel truss girder and closure in midspan. It can be used as reference for other similar bridge projects.