顶推施工作为一种成熟的施工工艺,跨径受到限制,在国内推广并不多。在总结国内外顶推施工技术的基础上,分析了顶推施工中存在的问题,并通过对设计和施工工艺的改进,提出了一种墩上临时钢斜撑和预制组拼相结合的顶推新技术,实现了PC梁桥顶推的大跨径突破,其成果可供同类型桥梁设计施工提供参考。 Push construction as a mature construction technology, limited by the span, promotion in the country is not much. On the basis of summarizing the construction technology of jacking at home and abroad, the problems existing in jacking construction are analyzed. Based on the improvement of design and construction technology, a combination of temporary steel brace and prefabricated ganging is proposed Push the new technology, to achieve a large span of PC beam bridge thrust breakthrough, the results for the same type of bridge design and construction provide a reference.