Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Synchronous stress-free closure method for main arch and main girder of steel truss arch bridge in arched girder parallel construction
The invention discloses a synchronous stress-free closure method for a main arch and a main beam of a steel truss arch bridge in arched-girder concurrent construction, which is technically characterized in that rod pieces are processed and manufactured strictly according to a design construction drawing in factory manufacturing, when the rod pieces are erected on the main truss arch and connected, punching nails and high-strength bolts are connected according to standard requirements, and when the main arch is closed, the main beam and the main beam of the steel truss arch bridge are connected through the punching nails and the high-strength bolts. The elevation, the rotating angle and the mileage error of a closure gap are adjusted by lifting the side fulcrums, pushing the middle fulcrums and tensioning the cable-stayed buckling and hanging system buckling anchor cables, stress-free closure of the main arch and the main beam is achieved, then the side fulcrums are jacked to the designed elevation, the cable-stayed buckling and hanging system buckling anchor cables, temporary loads such as temporary ballasting and the like are dismantled, and the main arch and the main beam are closed. The bridge line shape can be designed by constructing the bridge line shape, and the structural line shape of a large bridge is not changed. The method has the beneficial effects of being good in economical efficiency, rapid in construction, high in practicability, capable of guaranteeing the construction quality and the like, and is suitable for closure construction regulation and control of steel truss structural rod pieces such as steel truss beams and the like aiming at objects including steel truss arches.
本发明公开了一种拱梁并进施工钢桁拱桥主拱和主梁同步无应力合龙方法，该技术基本思想是在工厂制造中严格按照设计施工图加工制造杆件，在主桁拱架设杆件与杆件连接时，按规范要求上足连接冲钉和高强螺栓，在主拱合龙时，通过升降边支点、顶推中支点以及斜拉扣挂系统扣锚索张拉，调整合龙口高程和转角、里程误差，实现主拱和主梁无应力合龙，再将边支点顶升至设计标高，拆除斜拉扣挂系统扣锚索以及临时压重等临时荷载，则施工成桥线形即可达到设计成桥线形，不会改变大桥的结构线形。本发明具有经济性好、施工快捷、实用性强、施工质量有保证等有益效果，针对对象不仅包括钢桁拱，还适用于钢桁梁等钢桁架结构杆件的合龙施工调控。
Synchronous stress-free closure method for main arch and main girder of steel truss arch bridge in arched girder parallel construction
The invention discloses a synchronous stress-free closure method for a main arch and a main beam of a steel truss arch bridge in arched-girder concurrent construction, which is technically characterized in that rod pieces are processed and manufactured strictly according to a design construction drawing in factory manufacturing, when the rod pieces are erected on the main truss arch and connected, punching nails and high-strength bolts are connected according to standard requirements, and when the main arch is closed, the main beam and the main beam of the steel truss arch bridge are connected through the punching nails and the high-strength bolts. The elevation, the rotating angle and the mileage error of a closure gap are adjusted by lifting the side fulcrums, pushing the middle fulcrums and tensioning the cable-stayed buckling and hanging system buckling anchor cables, stress-free closure of the main arch and the main beam is achieved, then the side fulcrums are jacked to the designed elevation, the cable-stayed buckling and hanging system buckling anchor cables, temporary loads such as temporary ballasting and the like are dismantled, and the main arch and the main beam are closed. The bridge line shape can be designed by constructing the bridge line shape, and the structural line shape of a large bridge is not changed. The method has the beneficial effects of being good in economical efficiency, rapid in construction, high in practicability, capable of guaranteeing the construction quality and the like, and is suitable for closure construction regulation and control of steel truss structural rod pieces such as steel truss beams and the like aiming at objects including steel truss arches.
本发明公开了一种拱梁并进施工钢桁拱桥主拱和主梁同步无应力合龙方法，该技术基本思想是在工厂制造中严格按照设计施工图加工制造杆件，在主桁拱架设杆件与杆件连接时，按规范要求上足连接冲钉和高强螺栓，在主拱合龙时，通过升降边支点、顶推中支点以及斜拉扣挂系统扣锚索张拉，调整合龙口高程和转角、里程误差，实现主拱和主梁无应力合龙，再将边支点顶升至设计标高，拆除斜拉扣挂系统扣锚索以及临时压重等临时荷载，则施工成桥线形即可达到设计成桥线形，不会改变大桥的结构线形。本发明具有经济性好、施工快捷、实用性强、施工质量有保证等有益效果，针对对象不仅包括钢桁拱，还适用于钢桁梁等钢桁架结构杆件的合龙施工调控。
Synchronous stress-free closure method for main arch and main girder of steel truss arch bridge in arched girder parallel construction
一种拱梁并进施工钢桁拱桥主拱和主梁同步无应力合龙方法
TIAN WEI (Autor:in) / ZHOU RENZHONG (Autor:in) / HUANG CAN (Autor:in) / ZHENG JIANXIN (Autor:in) / MU WENJUN (Autor:in) / KANG XUEYUN (Autor:in) / ZHU HAO (Autor:in) / TANG ZHEN (Autor:in) / WANG HUI (Autor:in) / ZHOU SHENGGUO (Autor:in)
31.05.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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