Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of underground passage orthogonally and closely attached to underground commercial street bottom plate
The invention provides a construction method of an underground passage orthogonally and closely attached to a bottom plate of an underground commercial street, which comprises the following steps of: horizontally excavating upper steps on left and right lines of the underground passage, and supporting by a vertical frame; pouring an underpinning beam, an underpass section top plate and an upper half section side wall, and connecting with the existing interval structure of the existing underground passage; a plurality of jacks are arranged between the underpinning beam and the inverted arch of the upper step, and existing pile foundations of the underground passage are cut off one by one; sequentially constructing, excavating a lower step and constructing a lower step structure; and a waterproof layer is wrapped outside the construction structure, and gaps around the underpass section structure are backfilled through plain concrete. Pile foundation underpinning is carried out immediately after an upper step structure, namely, an underpinning beam, a bottom penetrating section top plate and an upper half section side wall, is poured. Compared with pile foundation underpinning of similar projects, due to the fact that only the upper structure is constructed, the construction period can be greatly shortened, under the protection of the existing upper structure, the construction speed of the lower step can be greatly increased, and the construction period, the manufacturing cost, the safety and the like can be well controlled.
本发明提供一种正交密贴地下商业街底板的地下通道施工方法，包括如下步骤：在地下通道的左右线水平开挖上台阶，并立架支护；浇筑托换梁、下穿段顶板及上半段侧墙，并与已有地下通道的已有区间结构连接；在托换梁及上台阶的仰拱间布置多个千斤顶，并逐一截断地下通道的已有桩基；依次施工，开挖下台阶，施作下台阶结构；在施工结构外包防水层，并通过素砼回填下穿段结构四周的空隙。通过在上台阶结构，即托换梁、下穿段顶板及上半段侧墙浇筑完成后，马上进行桩基托换。相较于同类工程的桩基托换，由于只施作了上部结构，可大幅缩短工期，在已有上部结构的保护下，下台阶的施工速度也可大大提高，能够较好控制工期、造价、安全等。
Construction method of underground passage orthogonally and closely attached to underground commercial street bottom plate
The invention provides a construction method of an underground passage orthogonally and closely attached to a bottom plate of an underground commercial street, which comprises the following steps of: horizontally excavating upper steps on left and right lines of the underground passage, and supporting by a vertical frame; pouring an underpinning beam, an underpass section top plate and an upper half section side wall, and connecting with the existing interval structure of the existing underground passage; a plurality of jacks are arranged between the underpinning beam and the inverted arch of the upper step, and existing pile foundations of the underground passage are cut off one by one; sequentially constructing, excavating a lower step and constructing a lower step structure; and a waterproof layer is wrapped outside the construction structure, and gaps around the underpass section structure are backfilled through plain concrete. Pile foundation underpinning is carried out immediately after an upper step structure, namely, an underpinning beam, a bottom penetrating section top plate and an upper half section side wall, is poured. Compared with pile foundation underpinning of similar projects, due to the fact that only the upper structure is constructed, the construction period can be greatly shortened, under the protection of the existing upper structure, the construction speed of the lower step can be greatly increased, and the construction period, the manufacturing cost, the safety and the like can be well controlled.
本发明提供一种正交密贴地下商业街底板的地下通道施工方法，包括如下步骤：在地下通道的左右线水平开挖上台阶，并立架支护；浇筑托换梁、下穿段顶板及上半段侧墙，并与已有地下通道的已有区间结构连接；在托换梁及上台阶的仰拱间布置多个千斤顶，并逐一截断地下通道的已有桩基；依次施工，开挖下台阶，施作下台阶结构；在施工结构外包防水层，并通过素砼回填下穿段结构四周的空隙。通过在上台阶结构，即托换梁、下穿段顶板及上半段侧墙浇筑完成后，马上进行桩基托换。相较于同类工程的桩基托换，由于只施作了上部结构，可大幅缩短工期，在已有上部结构的保护下，下台阶的施工速度也可大大提高，能够较好控制工期、造价、安全等。
Construction method of underground passage orthogonally and closely attached to underground commercial street bottom plate
一种正交密贴地下商业街底板的地下通道施工方法
ZHANG XINSHENG (Autor:in) / DIWUYADONG (Autor:in) / FENG JIMENG (Autor:in) / TIAN CHENGMING (Autor:in) / LU ZHIJUN (Autor:in) / ZENG YUXIN (Autor:in) / SHI CHENGLIN (Autor:in) / ZHANG JUNRU (Autor:in) / ZHAO XIAOMING (Autor:in) / WANG HUI (Autor:in)
22.07.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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