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A platform for research: civil engineering, architecture and urbanism
Construction method of continuous rigid frame bridge for bracket construction
The invention discloses a construction method of a continuous rigid frame bridge for support construction, and relates to the technical field of bridge construction, and the construction method comprises the following steps: step 1, after bridge pier construction is completed, erecting a support between two adjacent bridge piers, and then pre-pressing the support; secondly, a supporting plate is installed on the support, then a beam body formwork is installed, then the beam body formwork is pre-pressed, and a closure section formwork is reserved; thirdly, steel bars are bound, prestressed tendon pipelines are reserved, concrete is poured, and prestressed tendons are tensioned; and fourthly, a closure section stiff framework is installed, reinforcing steel bars are bound, closure section concrete is poured, closure section prestressed tendons are tensioned, and pushing is conducted on the support after the concrete shrinks. Therefore, through the arrangement of the closure section and the pushing part, the problems of later downwarping and structure cracking caused by shrinkage and creep of the bridge when the large-span continuous steel structure bridge is constructed by adopting a bracket are solved, so that the construction period of the continuous steel structure bridge is shortened, and the working procedure is simpler.
本发明公开了一种支架施工的连续刚构桥的施工方法，涉及桥梁施工技术领域，其施工方法的步骤如下：步骤一，桥墩施工完成后，在相邻两个桥墩之间搭设支架，然后进行支架预压；步骤二，在支架上安装支撑板，再安装梁体模板，然后进行梁体模板预压，并预留合龙段模板；步骤三，绑扎钢筋，预留预应力筋管道，浇筑混凝土，张拉预应力筋；步骤四，安装合龙段劲性骨架，绑扎钢筋，浇筑合龙段混凝土，张拉合龙段预应力筋，待混凝土收缩，然后在支架上进行顶推。因此，通过合龙段与顶推的设置，解决了大跨径连续钢构桥在采用支架施工时桥梁发生收缩徐变导致后期下挠及结构开裂的问题，这样，便缩短了连续刚构桥的施工周期，且工序更加简单。
Construction method of continuous rigid frame bridge for bracket construction
The invention discloses a construction method of a continuous rigid frame bridge for support construction, and relates to the technical field of bridge construction, and the construction method comprises the following steps: step 1, after bridge pier construction is completed, erecting a support between two adjacent bridge piers, and then pre-pressing the support; secondly, a supporting plate is installed on the support, then a beam body formwork is installed, then the beam body formwork is pre-pressed, and a closure section formwork is reserved; thirdly, steel bars are bound, prestressed tendon pipelines are reserved, concrete is poured, and prestressed tendons are tensioned; and fourthly, a closure section stiff framework is installed, reinforcing steel bars are bound, closure section concrete is poured, closure section prestressed tendons are tensioned, and pushing is conducted on the support after the concrete shrinks. Therefore, through the arrangement of the closure section and the pushing part, the problems of later downwarping and structure cracking caused by shrinkage and creep of the bridge when the large-span continuous steel structure bridge is constructed by adopting a bracket are solved, so that the construction period of the continuous steel structure bridge is shortened, and the working procedure is simpler.
本发明公开了一种支架施工的连续刚构桥的施工方法，涉及桥梁施工技术领域，其施工方法的步骤如下：步骤一，桥墩施工完成后，在相邻两个桥墩之间搭设支架，然后进行支架预压；步骤二，在支架上安装支撑板，再安装梁体模板，然后进行梁体模板预压，并预留合龙段模板；步骤三，绑扎钢筋，预留预应力筋管道，浇筑混凝土，张拉预应力筋；步骤四，安装合龙段劲性骨架，绑扎钢筋，浇筑合龙段混凝土，张拉合龙段预应力筋，待混凝土收缩，然后在支架上进行顶推。因此，通过合龙段与顶推的设置，解决了大跨径连续钢构桥在采用支架施工时桥梁发生收缩徐变导致后期下挠及结构开裂的问题，这样，便缩短了连续刚构桥的施工周期，且工序更加简单。
Construction method of continuous rigid frame bridge for bracket construction
一种支架施工的连续刚构桥的施工方法
REN JIAN (author) / SUN SONGSONG (author) / LUO HONG (author) / WEI JIANBIN (author) / YUAN LIGANG (author) / LIU HUI (author) / QIU JINGLEI (author)
2024-02-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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