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预计2008年通车的苏通长江公路大桥是当今世界上最大跨径的斜拉桥,目前该桥引桥已经全面开工,箱梁预制场已经全部建设完成,箱梁节段已经开始大规模预制,体外预应力厂家已经开始供货,其中转向块和锚固块处的预埋件已经开始预埋,预计在今年6月份开始箱梁架设。苏通大桥引桥施工中采用的预制拼装结合体外预应力技术,在国内大型桥粱项目中是首次应用,引起了业内工程界的瞩目。本期“专家解惑”栏目请来苏通长江公路大桥设计项目组副总设计代表金卫兵工程师。由浅入深解答了相关问题,以满足广大读者的求知需求。然而因为篇幅有限,所以本文只能浅尝辄止,今后将根据读者的反馈意见继续刊发其他相关内容。
It is expected that the Sutong Yangtze River Highway Bridge which opened to traffic in 2008 is the largest span cable-stayed bridge in the world. At present, the bridge approach bridge has been fully started, the box-beam prefabrication field has been completed and the box girder segment has begun large-scale prefabrication. Prestressed manufacturers have begun to supply, including the steering block and the embedded parts at the anchor block has begun to embed, is expected to be erected in June of this year. The use of prefabricated prefabrication combined with external prestressing technology in the approach bridge construction of Sutong Bridge is the first application in the domestic large bridge beam project, which has aroused the attention of the engineering field in the industry. This issue “expert solution ” section invited Sutong Yangtze River Bridge Design Project Team vice president of the design representative Kim Gui-bing engineer. The answers to the relevant questions from the shallower to the deeper, to meet the needs of readers. However, due to limited space, this article can only be a superficial knowledge of the future, according to the feedback of readers continue to publish other related content.