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A platform for research: civil engineering, architecture and urbanism
Construction method for prefabricated segmental beam construction under complex working conditions
The invention discloses a construction method for prefabricated segmental beam construction under complex working conditions, the construction method is based on a segmental assembly bridge girder erection machine, and the segmental assembly bridge girder erection machine comprises a main frame, a front auxiliary supporting leg, a rear auxiliary supporting leg, two middle supporting legs, a first main crown block, a second main crown block and two auxiliary crown blocks. The construction method comprises the steps that prestressed concrete box girders to be erected are concentrated on a special girder manufacturing field to be prefabricated in a segmented mode, then the prestressed concrete box girders are conveyed to a bridge construction site and fed into the belly of a bridge erecting machine from a rear span, and T-structure suspension splicing operation is conducted on a middle pier. According to the construction method, crown block transverse movement and hanging transverse movement are matched with each other to adapt to erection of a curve beam with a smaller radius, and a supporting leg transverse movement and rotation mode is adopted to adapt to erection construction of a small-curve-section bridge.
本发明公开了一种用于复杂工况的预制节段梁施工的施工方法，该施工方法基于节段拼装架桥机，节段拼装架桥机包括主框架、前辅助支腿、后辅助支腿、两个中支腿、第一主天车、第二主天车以及两个辅助天车，第一主天车、第二主天车以及两个辅助天车可沿着主框架上移动，施工方法包括为将待架的预应力混凝土箱形梁集中在专门的制梁场上分段预制，然后运到桥梁工地并从后跨喂入架桥机腹内在一幅中墩进行T构悬拼作业，然后进行首跨半跨悬拼作业，待一联末跨半跨悬拼作业完成后再进行整联的预应力张拉，本发明采用通过天车横移与吊挂横移相互配合来适应半径更小的曲线梁的架设，并且采用支腿横移以及旋转的方式适应小曲线段桥梁架设施工。
Construction method for prefabricated segmental beam construction under complex working conditions
The invention discloses a construction method for prefabricated segmental beam construction under complex working conditions, the construction method is based on a segmental assembly bridge girder erection machine, and the segmental assembly bridge girder erection machine comprises a main frame, a front auxiliary supporting leg, a rear auxiliary supporting leg, two middle supporting legs, a first main crown block, a second main crown block and two auxiliary crown blocks. The construction method comprises the steps that prestressed concrete box girders to be erected are concentrated on a special girder manufacturing field to be prefabricated in a segmented mode, then the prestressed concrete box girders are conveyed to a bridge construction site and fed into the belly of a bridge erecting machine from a rear span, and T-structure suspension splicing operation is conducted on a middle pier. According to the construction method, crown block transverse movement and hanging transverse movement are matched with each other to adapt to erection of a curve beam with a smaller radius, and a supporting leg transverse movement and rotation mode is adopted to adapt to erection construction of a small-curve-section bridge.
本发明公开了一种用于复杂工况的预制节段梁施工的施工方法，该施工方法基于节段拼装架桥机，节段拼装架桥机包括主框架、前辅助支腿、后辅助支腿、两个中支腿、第一主天车、第二主天车以及两个辅助天车，第一主天车、第二主天车以及两个辅助天车可沿着主框架上移动，施工方法包括为将待架的预应力混凝土箱形梁集中在专门的制梁场上分段预制，然后运到桥梁工地并从后跨喂入架桥机腹内在一幅中墩进行T构悬拼作业，然后进行首跨半跨悬拼作业，待一联末跨半跨悬拼作业完成后再进行整联的预应力张拉，本发明采用通过天车横移与吊挂横移相互配合来适应半径更小的曲线梁的架设，并且采用支腿横移以及旋转的方式适应小曲线段桥梁架设施工。
Construction method for prefabricated segmental beam construction under complex working conditions
一种用于复杂工况的预制节段梁施工的施工方法
ZHANG JUNYAN (author) / YANG ZHI (author) / DAI YU (author) / CHEN YANJUN (author) / CHEN DELI (author) / FAN XIANZHI (author) / CAO CHANGXING (author) / XU WENJU (author) / NIU QINGLIN (author) / JIANG LIANBIN (author)
2023-05-02
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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