Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
External underpinning structure and method for open-cut tunnel to pass through single-pier viaduct
The invention relates to the technical field of bridge engineering, in particular to an external underpinning structure and method for an open-cut tunnel to penetrate through a single-pier viaduct, underground diaphragm walls are arranged underground on the two sides of a box girder, an underground straining beam is poured between the underground diaphragm walls, underpinning stand columns are upwards constructed on the tops of the underground diaphragm walls to the two sides of the box girder, and limiting brackets are inwards arranged in the underpinning stand columns; the two sides of the box girder are supported by the limiting brackets, a transfer beam is arranged between the underpinning stand columns on the two sides of the box girder, the two ends of the transfer beam are connected with the underpinning stand columns on the two sides respectively, the top of the transfer beam is connected with a first embedded connecting piece at the bottom of the box girder, two supporting columns are arranged on the transfer beam, and the bottoms of the supporting columns are connected with the transfer beam. The method has the advantages that through the method of underpinning the outside above the ground, various pile forming quality problems caused by the limited construction space under the viaduct can be avoided, pile foundations, bearing platforms and piers of an original bridge can be detached, and the net space under the bridge is greatly widened.
本发明涉及桥梁工程技术领域，具体来说是一种明挖法隧道穿越独墩高架桥的外部托换结构及方法，箱梁两侧的地下设有地连墙，地连墙之间浇筑地下系梁，地连墙顶部向上施工托换立柱至箱梁两侧，托换立柱向内设有限位牛腿，限位牛腿托着箱梁两侧，箱梁两侧的托换立柱之间设有转换梁，转换梁两端分别与两侧的托换立柱连接，转换梁顶部与箱梁底部的第一预埋连接件连接，所述的转换梁上设有两个支撑柱，支撑柱底部与转换梁连接，顶部与箱梁上的第二预埋连接件连接，其优点在于：通过地面以上外部托换的方法，不仅可以避免因高架桥下施工空间有限而引起的各种成桩质量问题，还可以拆除原有桥梁的桩基础、承台和桥墩，极大地扩宽了桥下的净空间。
External underpinning structure and method for open-cut tunnel to pass through single-pier viaduct
The invention relates to the technical field of bridge engineering, in particular to an external underpinning structure and method for an open-cut tunnel to penetrate through a single-pier viaduct, underground diaphragm walls are arranged underground on the two sides of a box girder, an underground straining beam is poured between the underground diaphragm walls, underpinning stand columns are upwards constructed on the tops of the underground diaphragm walls to the two sides of the box girder, and limiting brackets are inwards arranged in the underpinning stand columns; the two sides of the box girder are supported by the limiting brackets, a transfer beam is arranged between the underpinning stand columns on the two sides of the box girder, the two ends of the transfer beam are connected with the underpinning stand columns on the two sides respectively, the top of the transfer beam is connected with a first embedded connecting piece at the bottom of the box girder, two supporting columns are arranged on the transfer beam, and the bottoms of the supporting columns are connected with the transfer beam. The method has the advantages that through the method of underpinning the outside above the ground, various pile forming quality problems caused by the limited construction space under the viaduct can be avoided, pile foundations, bearing platforms and piers of an original bridge can be detached, and the net space under the bridge is greatly widened.
本发明涉及桥梁工程技术领域，具体来说是一种明挖法隧道穿越独墩高架桥的外部托换结构及方法，箱梁两侧的地下设有地连墙，地连墙之间浇筑地下系梁，地连墙顶部向上施工托换立柱至箱梁两侧，托换立柱向内设有限位牛腿，限位牛腿托着箱梁两侧，箱梁两侧的托换立柱之间设有转换梁，转换梁两端分别与两侧的托换立柱连接，转换梁顶部与箱梁底部的第一预埋连接件连接，所述的转换梁上设有两个支撑柱，支撑柱底部与转换梁连接，顶部与箱梁上的第二预埋连接件连接，其优点在于：通过地面以上外部托换的方法，不仅可以避免因高架桥下施工空间有限而引起的各种成桩质量问题，还可以拆除原有桥梁的桩基础、承台和桥墩，极大地扩宽了桥下的净空间。
External underpinning structure and method for open-cut tunnel to pass through single-pier viaduct
一种明挖法隧道穿越独墩高架桥的外部托换结构及方法
TENG JIANLONG (Autor:in) / YANG RONG (Autor:in) / GUO ZILIANG (Autor:in)
23.05.2023
Patent
Elektronische Ressource
Chinesisch
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