| 组合工便梁在既有线框构桥顶进施工中的应用 |
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| 引用本文： | 张永全,夏龙.组合工便梁在既有线框构桥顶进施工中的应用[J].辽宁交通科技,2014(2):1-5. |
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| 作者姓名： | 张永全 夏龙 |
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| 作者单位： | 中铁一局集团第五工程有限公司,宝鸡721006 |
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| 摘 要： | 摘要：在铁路既有线的框构桥顶进施工中，线路加固方式受框构跨度、限界及限速等条件约束。根据1—9．Om框构桥顶进施工的实例，结合D型便梁和吊轨横抬梁的特点，设计并采用了组合工便梁法进行线路加固，由于该加固体系受约束条件少适应范围大，故对其结构组成、主要构件设计检算、施工顺序及技术要点等进行介绍，便于类似工程参考和比选。
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| 关 键 词： | 铁路既有线 线路加固 线路架空 组合工便梁 框构桥 顶进 |
The Application of Combined I -Beam Jacking Construction on the Existing Frame Structure Bridge |
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| Abstract: | In the jacking construction of railway existing frame structure bridge, the circuit reinforcement methods are limited by conditions such as frame structure span, range limit and speed limit. According to 1 -9. Om frame structure bridge jacking construction and with the features of D - type girder and overhead horizontal beams, combined I -beam are designed and used to reinforce the circuit. Because the reinforcement system has a wide adaptive norm with few constraint conditions, its structural compositions, design and check of primary members, construction sequence and technical points are introduced in order to give a reference and comparison to relevant projects. |
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| Keywords: | Railway existing line Circuit reinforcement Circuit off - contact Combined I - type beam Frame structure bridge Jacking |
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