A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Variable-width variable-box asymmetric continuous rigid frame bridge and construction method
The invention discloses a variable-width variable-box asymmetric continuous rigid frame bridge and a construction method. A side span support cast-in-place beam section adopts a variable-width variable-box large-width horn-shaped box beam; the main span suspended pouring beam sections are connected through the midspan closure sections; according to the construction method, the side spans are cast in situ through supports, and the main spans are cast in a suspended mode through hanging baskets. According to the invention, the continuous rigid frame bridge can be continuously applied under the conditions of small side mid-span ratio and variable width and box, the characteristics of economy and durability of the concrete bridge can be continuously exerted, and good economic benefits can be achieved. According to the asymmetric construction method, the construction risk caused by the asymmetric structure of the special-shaped rigid framework is effectively reduced, a variable-width and variable-box large-width horn-shaped box girder is adopted for a side span, and a solution is provided for balancing the dead weight of a main span and moving an unconditionally-arranged grade crossing on a roadbed to a bridge; and meanwhile, the problem of negative reaction of a small-side-mid-span-ratio bridge transition pier is solved, and reference is provided for asymmetrically arranged bridges such as mountainous rivers and deep ditches in combination with terrains and geology.
本发明公开了一种变宽变箱非对称连续刚构桥及施工方法，本发明边跨支架现浇梁段采用变宽变箱“大变宽喇叭形”箱梁；所述主跨悬浇梁段通过跨中合龙段连接；所述施工方法为边跨采用支架现浇，主跨采用挂篮悬浇。本发明使连续刚构桥在小边中跨比、变宽变箱的情况下继续得以应用，继续发挥混凝土桥经济、耐久的特点，可以达到良好的经济效益。非对称施工方法有效降低了异形刚构因结构不对称导致的施工风险，边跨采用变宽变箱“大变宽喇叭形”箱梁，为平衡主跨自重和将路基上无条件布置的平交口移动到桥上提供了解决方案，同时解决了小边中跨比桥梁过渡墩出现负反力的问题，为山区河流、深沟等结合地形和地质进行非对称布置的桥梁提供了参考。
Variable-width variable-box asymmetric continuous rigid frame bridge and construction method
The invention discloses a variable-width variable-box asymmetric continuous rigid frame bridge and a construction method. A side span support cast-in-place beam section adopts a variable-width variable-box large-width horn-shaped box beam; the main span suspended pouring beam sections are connected through the midspan closure sections; according to the construction method, the side spans are cast in situ through supports, and the main spans are cast in a suspended mode through hanging baskets. According to the invention, the continuous rigid frame bridge can be continuously applied under the conditions of small side mid-span ratio and variable width and box, the characteristics of economy and durability of the concrete bridge can be continuously exerted, and good economic benefits can be achieved. According to the asymmetric construction method, the construction risk caused by the asymmetric structure of the special-shaped rigid framework is effectively reduced, a variable-width and variable-box large-width horn-shaped box girder is adopted for a side span, and a solution is provided for balancing the dead weight of a main span and moving an unconditionally-arranged grade crossing on a roadbed to a bridge; and meanwhile, the problem of negative reaction of a small-side-mid-span-ratio bridge transition pier is solved, and reference is provided for asymmetrically arranged bridges such as mountainous rivers and deep ditches in combination with terrains and geology.
本发明公开了一种变宽变箱非对称连续刚构桥及施工方法，本发明边跨支架现浇梁段采用变宽变箱“大变宽喇叭形”箱梁；所述主跨悬浇梁段通过跨中合龙段连接；所述施工方法为边跨采用支架现浇，主跨采用挂篮悬浇。本发明使连续刚构桥在小边中跨比、变宽变箱的情况下继续得以应用，继续发挥混凝土桥经济、耐久的特点，可以达到良好的经济效益。非对称施工方法有效降低了异形刚构因结构不对称导致的施工风险，边跨采用变宽变箱“大变宽喇叭形”箱梁，为平衡主跨自重和将路基上无条件布置的平交口移动到桥上提供了解决方案，同时解决了小边中跨比桥梁过渡墩出现负反力的问题，为山区河流、深沟等结合地形和地质进行非对称布置的桥梁提供了参考。
Variable-width variable-box asymmetric continuous rigid frame bridge and construction method
一种变宽变箱非对称连续刚构桥及施工方法
JIANG XINGHONG (author) / ZHAO TONG (author) / ZHOU ZHILIN (author) / LI SHUDING (author) / YANG XINCHUN (author) / HUANG YALEI (author)
2023-10-13
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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