Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Rapid assembly transformation method for superstructure of small-span beam bridge
The invention discloses a rapid assembly transformation method for an upper structure of a small-span beam bridge, and relates to a control process for dismantling the upper structure of a dangerous and old small-span beam bridge, prefabricating a beam at the height of a beam end, rapidly forming a transverse connecting system, prefabricating an anti-collision wall and a bridge floor-free leveling layer. When the dangerous and old small-span beam bridge is dismantled and transformed, an original upper structure is dismantled, a support padstone and a bent cap are adjusted and repaired, the beam end height of a new beam is determined and prefabricated, and after the new beam is installed in place, a transverse connecting system is constructed to ensure that the whole prefabricated beam is stressed. The method has the beneficial technical effects that the problems that the conventional small-span bridge cast-in-place construction period is long, the quality is difficult to control and the comprehensive cost is high are effectively solved, and the advantages of good forming quality, environment friendliness, low comprehensive cost, attractiveness and convenience in steel bar position adjustment of the precast beam are fully played; the transformation quality of the upper structure of the small-span dangerous old bridge is guaranteed, the traffic closing period is greatly shortened, and the influence on traffic of a road network is reduced to the minimum.
本发明公开了小跨径梁桥上部结构快速装配化改造方法，涉及危旧小跨径梁桥上部结构拆除、可调梁端高度预制梁、快速化横向连接系、预制防撞墙、免桥面调平层控制工艺。危旧小跨径梁桥拆除改造时，拆除原有上部结构，调整修复支座垫石及盖梁，确定新梁梁端高度并预制，新梁安装就位后施工横向连接系确保预制梁整体受力。本发明的有益技术效果是有效解决了常规小跨径桥现浇施工工期长、质量难以控制、综合成本偏高的难题，充分发挥预制梁成型质量好、环境友好、综合成本低的优势、美观，便于钢筋位置调节的固有优势，保障了小跨径危旧桥上部结构改造质量，大幅度降低了交通封闭的期限，对路网的通行影响降到最低。
Rapid assembly transformation method for superstructure of small-span beam bridge
The invention discloses a rapid assembly transformation method for an upper structure of a small-span beam bridge, and relates to a control process for dismantling the upper structure of a dangerous and old small-span beam bridge, prefabricating a beam at the height of a beam end, rapidly forming a transverse connecting system, prefabricating an anti-collision wall and a bridge floor-free leveling layer. When the dangerous and old small-span beam bridge is dismantled and transformed, an original upper structure is dismantled, a support padstone and a bent cap are adjusted and repaired, the beam end height of a new beam is determined and prefabricated, and after the new beam is installed in place, a transverse connecting system is constructed to ensure that the whole prefabricated beam is stressed. The method has the beneficial technical effects that the problems that the conventional small-span bridge cast-in-place construction period is long, the quality is difficult to control and the comprehensive cost is high are effectively solved, and the advantages of good forming quality, environment friendliness, low comprehensive cost, attractiveness and convenience in steel bar position adjustment of the precast beam are fully played; the transformation quality of the upper structure of the small-span dangerous old bridge is guaranteed, the traffic closing period is greatly shortened, and the influence on traffic of a road network is reduced to the minimum.
本发明公开了小跨径梁桥上部结构快速装配化改造方法，涉及危旧小跨径梁桥上部结构拆除、可调梁端高度预制梁、快速化横向连接系、预制防撞墙、免桥面调平层控制工艺。危旧小跨径梁桥拆除改造时，拆除原有上部结构，调整修复支座垫石及盖梁，确定新梁梁端高度并预制，新梁安装就位后施工横向连接系确保预制梁整体受力。本发明的有益技术效果是有效解决了常规小跨径桥现浇施工工期长、质量难以控制、综合成本偏高的难题，充分发挥预制梁成型质量好、环境友好、综合成本低的优势、美观，便于钢筋位置调节的固有优势，保障了小跨径危旧桥上部结构改造质量，大幅度降低了交通封闭的期限，对路网的通行影响降到最低。
Rapid assembly transformation method for superstructure of small-span beam bridge
小跨径梁桥上部结构快速装配化改造方法
MAO MIN (Autor:in) / MA YANPING (Autor:in) / ZHAO WENPU (Autor:in) / LIU JIANXUN (Autor:in) / LIU ZHIHUA (Autor:in) / WANG XIAN'AN (Autor:in) / WANG QI (Autor:in) / ZHAO XIAOJIN (Autor:in) / GUO XUEBING (Autor:in) / ZHANG CHUANCHUAN (Autor:in)
22.03.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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