Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Reverse construction method for steel truss and concrete davit structure
The invention discloses a top-down construction method for a steel truss and concrete davit structure. The top-down construction method comprises the following steps that S1, hoisting and concrete pouring construction of an (N + 1) th layer of non-cantilever structure are conducted; s2, hoisting construction of the steel trusses from the (N + 2) th layer to the (N + 3) th layer; s3, performing concrete pouring construction on non-cantilever structures from the (N + 2) th layer to the (N + 3) th layer; s4, carrying out concrete pouring construction on the cantilever structures from the (N + 1) th layer to the (N + 3) th layer; and S5, concrete pouring construction of the Nth layer of davit structure is conducted. The reverse construction method is adopted for construction, the positions of the davit structures are reserved, non-cantilever structures of all layers are preferentially constructed, after a steel structure truss and a concrete stress system are formed, cantilever structures of the (N + 1) th layer, the (N + 2) th layer and the (N + 3) th layer are sequentially constructed, and finally the davit structure of the Nth layer is constructed, so that the davit stress is consistent with the designed stress all the time; the problems that a temporary support needs to be additionally arranged below the davit position, the construction difficulty is increased, and the construction measure cost is increased are solved, and meanwhile horizontal cracks possibly caused by stress state conversion of the davit position are avoided.
本发明公开了一种钢桁架与混凝土吊柱结构逆作法施工方法，包括以下步骤：S1、第N+1层非悬挑结构的吊装及混凝土浇筑施工；S2、第N+2层至第N+3层钢桁架的吊装施工；S3、第N+2层至第N+3层非悬挑结构的混凝土浇筑施工；S4、第N+1层至第N+3层悬挑结构的混凝土浇筑施工；S5、第N层吊柱结构的混凝土浇筑施工。本发明采用逆作法施工，通过预留吊柱结构位置，优先对各层的非悬挑结构进行施工，形成钢结构桁架与混凝土受力体系后，再依次施工第N+1层、第N+2层和第N+3层的悬挑结构，最后施工第N层的吊柱结构，使吊柱受力始终与设计受力相符，不仅解决了吊柱位置下方需要增设临时支撑、加大施工难度及施工措施费的问题，同时避免了吊柱位置受力状态转换而可能出现的水平裂缝。
Reverse construction method for steel truss and concrete davit structure
The invention discloses a top-down construction method for a steel truss and concrete davit structure. The top-down construction method comprises the following steps that S1, hoisting and concrete pouring construction of an (N + 1) th layer of non-cantilever structure are conducted; s2, hoisting construction of the steel trusses from the (N + 2) th layer to the (N + 3) th layer; s3, performing concrete pouring construction on non-cantilever structures from the (N + 2) th layer to the (N + 3) th layer; s4, carrying out concrete pouring construction on the cantilever structures from the (N + 1) th layer to the (N + 3) th layer; and S5, concrete pouring construction of the Nth layer of davit structure is conducted. The reverse construction method is adopted for construction, the positions of the davit structures are reserved, non-cantilever structures of all layers are preferentially constructed, after a steel structure truss and a concrete stress system are formed, cantilever structures of the (N + 1) th layer, the (N + 2) th layer and the (N + 3) th layer are sequentially constructed, and finally the davit structure of the Nth layer is constructed, so that the davit stress is consistent with the designed stress all the time; the problems that a temporary support needs to be additionally arranged below the davit position, the construction difficulty is increased, and the construction measure cost is increased are solved, and meanwhile horizontal cracks possibly caused by stress state conversion of the davit position are avoided.
本发明公开了一种钢桁架与混凝土吊柱结构逆作法施工方法，包括以下步骤：S1、第N+1层非悬挑结构的吊装及混凝土浇筑施工；S2、第N+2层至第N+3层钢桁架的吊装施工；S3、第N+2层至第N+3层非悬挑结构的混凝土浇筑施工；S4、第N+1层至第N+3层悬挑结构的混凝土浇筑施工；S5、第N层吊柱结构的混凝土浇筑施工。本发明采用逆作法施工，通过预留吊柱结构位置，优先对各层的非悬挑结构进行施工，形成钢结构桁架与混凝土受力体系后，再依次施工第N+1层、第N+2层和第N+3层的悬挑结构，最后施工第N层的吊柱结构，使吊柱受力始终与设计受力相符，不仅解决了吊柱位置下方需要增设临时支撑、加大施工难度及施工措施费的问题，同时避免了吊柱位置受力状态转换而可能出现的水平裂缝。
Reverse construction method for steel truss and concrete davit structure
一种钢桁架与混凝土吊柱结构逆作法施工方法
CAI SHAOHONG (Autor:in) / CAI TAO (Autor:in) / XIE HECHUN (Autor:in) / TIAN YUJUN (Autor:in) / CHEN YUNYANG (Autor:in) / TAN HAILIN (Autor:in)
20.02.2024
Patent
Elektronische Ressource
Chinesisch
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