Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Arch type structure for protecting current underground traffic structures and construction method
The invention relates to an arch type structure for protecting a current underground traffic structure and a construction method. The arch type structure comprises a plate arch, ground tie beams arranged at the two ends of the plate arch correspondingly, a tensioning piece connected between the ground tie beams on the two sides and pile foundations arranged below the ground tie beams on the two sides correspondingly. The tensioning piece is a plate arch steel tie beam or a stay cable tie bar. The construction method comprises the following steps: constructing the pile foundations underground in parallel; mounting an embedded plate of the plate arch steel tie beam at the top end of the pile foundation; erecting a plate arch and a ground tie beam bracket at the top end of the pile foundation; plate arch reinforcing steel bars and ground tie beam reinforcing steel bars are bound inside, the plate arch reinforcing steel bars and the ground tie beam reinforcing steel bars are connected with the pre-buried plate, and then the plate arch and the ground tie beam for installing and connecting the pile foundation and the plate arch steel tie beam are obtained through overall cast-in-place; and finally, the plate arch support and the ground tie beam support are dismantled, the plate arch steel tie beam is tensioned, and the arch type structure is obtained. Compared with the prior art, the internal force of the plate arch straining beam can be controlled, the bending moments of the pile top and the arch feet are optimized, it is guaranteed that the total cross section of concrete is pressed under dead load, and the structural durability is improved.
本发明涉及一种保护现状地下交通构筑物的拱式结构与施工方法，拱式结构包括板拱、分别设于板拱两端的地系梁、连接于两侧地系梁之间的张拉件，以及分别设于两侧地系梁下方的桩基；张拉件为板拱钢系梁或拉索系杆。施工方法包括：于地下并列施工桩基；将板拱钢系梁的预埋板安装于桩基顶端；在桩基顶端搭设板拱和地系梁支架；在内绑扎板拱钢筋、地系梁钢筋，并使板拱钢筋、地系梁钢筋与预埋板连接，之后整体现浇筑得到安装连接桩基、板拱钢系梁的板拱、地系梁；最后拆除板拱支架和地系梁支架，张拉板拱钢系梁，得到拱式结构。与现有技术相比，本发明可以通过控制板拱系梁的内力，优化桩顶和拱脚弯矩，保证恒载下混凝土全截面受压，提高结构耐久性。
Arch type structure for protecting current underground traffic structures and construction method
The invention relates to an arch type structure for protecting a current underground traffic structure and a construction method. The arch type structure comprises a plate arch, ground tie beams arranged at the two ends of the plate arch correspondingly, a tensioning piece connected between the ground tie beams on the two sides and pile foundations arranged below the ground tie beams on the two sides correspondingly. The tensioning piece is a plate arch steel tie beam or a stay cable tie bar. The construction method comprises the following steps: constructing the pile foundations underground in parallel; mounting an embedded plate of the plate arch steel tie beam at the top end of the pile foundation; erecting a plate arch and a ground tie beam bracket at the top end of the pile foundation; plate arch reinforcing steel bars and ground tie beam reinforcing steel bars are bound inside, the plate arch reinforcing steel bars and the ground tie beam reinforcing steel bars are connected with the pre-buried plate, and then the plate arch and the ground tie beam for installing and connecting the pile foundation and the plate arch steel tie beam are obtained through overall cast-in-place; and finally, the plate arch support and the ground tie beam support are dismantled, the plate arch steel tie beam is tensioned, and the arch type structure is obtained. Compared with the prior art, the internal force of the plate arch straining beam can be controlled, the bending moments of the pile top and the arch feet are optimized, it is guaranteed that the total cross section of concrete is pressed under dead load, and the structural durability is improved.
本发明涉及一种保护现状地下交通构筑物的拱式结构与施工方法，拱式结构包括板拱、分别设于板拱两端的地系梁、连接于两侧地系梁之间的张拉件，以及分别设于两侧地系梁下方的桩基；张拉件为板拱钢系梁或拉索系杆。施工方法包括：于地下并列施工桩基；将板拱钢系梁的预埋板安装于桩基顶端；在桩基顶端搭设板拱和地系梁支架；在内绑扎板拱钢筋、地系梁钢筋，并使板拱钢筋、地系梁钢筋与预埋板连接，之后整体现浇筑得到安装连接桩基、板拱钢系梁的板拱、地系梁；最后拆除板拱支架和地系梁支架，张拉板拱钢系梁，得到拱式结构。与现有技术相比，本发明可以通过控制板拱系梁的内力，优化桩顶和拱脚弯矩，保证恒载下混凝土全截面受压，提高结构耐久性。
Arch type structure for protecting current underground traffic structures and construction method
一种保护现状地下交通构筑物的拱式结构与施工方法
BA WENPENG (Autor:in)
05.11.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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