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A platform for research: civil engineering, architecture and urbanism
Construction method of steel-concrete girder of cable-stayed bridge
The invention provides a construction method of a steel-concrete main beam of a cable-stayed bridge, the steel-concrete main beam is constructed in a multi-section manner, and the construction method comprises the following steps: step 1, carrying out cast-in-place construction on a section of concrete side main beam on a main tower and the steel-concrete main beams on two sides of the main tower by adopting a bracket; 2, steel-concrete main beams of other cantilever sections in the midspan are constructed through a front fulcrum guy cable hanging basket; cantilever hanging baskets are assembled on the steel-concrete main beams, steel bars are bound, steel cross beams are hoisted, concrete is poured, prestress is tensioned after the strength meets the design requirement, and a bridge deck panel is hoisted; 3, the cantilever hanging basket moves forwards to the next section, the construction procedure in the step 2 is repeated, and construction of the next section is conducted; 4, a side span cast-in-place section is constructed, the side span cast-in-place section is constructed through a floor stand, and a pile foundation and bailey beam support scheme is adopted for the support; step 5, closing the side span; and step 6, closing the midspan. According to the construction method, it can be guaranteed that the reinforced concrete girder has enough integrity and firmness, and the construction time is saved.
本发明提供一种斜拉桥钢混主梁的施工方法，钢混主梁分多节段进行施工，施工方法包括以下步骤：步骤1，在主塔上的一节混凝土边主梁以及主塔两侧的钢混主梁采用托架现浇施工；步骤2，跨中的其余悬臂节段的钢混主梁采用前支点牵索挂篮施工；在钢混主梁上拼装悬臂挂篮，绑扎钢筋，吊装钢横梁，浇筑混凝土，其强度达到设计要求后张拉预应力，吊装桥面面板；步骤3，悬臂挂篮前移至下一节段，重复步骤2中施工工序，进行下一节段施工；步骤4，施工边跨现浇段，边跨现浇段采用落地支架进行施工，支架采用桩基础加贝雷梁的支架方案；步骤5，合龙边跨；步骤6，合龙中跨。该施工方法能够保证钢混主梁具有足够的完整性及牢固性，并节约施工时间。
Construction method of steel-concrete girder of cable-stayed bridge
The invention provides a construction method of a steel-concrete main beam of a cable-stayed bridge, the steel-concrete main beam is constructed in a multi-section manner, and the construction method comprises the following steps: step 1, carrying out cast-in-place construction on a section of concrete side main beam on a main tower and the steel-concrete main beams on two sides of the main tower by adopting a bracket; 2, steel-concrete main beams of other cantilever sections in the midspan are constructed through a front fulcrum guy cable hanging basket; cantilever hanging baskets are assembled on the steel-concrete main beams, steel bars are bound, steel cross beams are hoisted, concrete is poured, prestress is tensioned after the strength meets the design requirement, and a bridge deck panel is hoisted; 3, the cantilever hanging basket moves forwards to the next section, the construction procedure in the step 2 is repeated, and construction of the next section is conducted; 4, a side span cast-in-place section is constructed, the side span cast-in-place section is constructed through a floor stand, and a pile foundation and bailey beam support scheme is adopted for the support; step 5, closing the side span; and step 6, closing the midspan. According to the construction method, it can be guaranteed that the reinforced concrete girder has enough integrity and firmness, and the construction time is saved.
本发明提供一种斜拉桥钢混主梁的施工方法，钢混主梁分多节段进行施工，施工方法包括以下步骤：步骤1，在主塔上的一节混凝土边主梁以及主塔两侧的钢混主梁采用托架现浇施工；步骤2，跨中的其余悬臂节段的钢混主梁采用前支点牵索挂篮施工；在钢混主梁上拼装悬臂挂篮，绑扎钢筋，吊装钢横梁，浇筑混凝土，其强度达到设计要求后张拉预应力，吊装桥面面板；步骤3，悬臂挂篮前移至下一节段，重复步骤2中施工工序，进行下一节段施工；步骤4，施工边跨现浇段，边跨现浇段采用落地支架进行施工，支架采用桩基础加贝雷梁的支架方案；步骤5，合龙边跨；步骤6，合龙中跨。该施工方法能够保证钢混主梁具有足够的完整性及牢固性，并节约施工时间。
Construction method of steel-concrete girder of cable-stayed bridge
一种斜拉桥钢混主梁的施工方法
HU ZHUKUI (author) / LI YONG (author) / WU DEHUA (author) / ZHANG JIESHENG (author) / LI WEIWEI (author) / ZHANG ZHAO (author) / WANG KUI (author) / DU CHENXI (author) / SU HAOCHUAN (author)
2022-07-29
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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