Design and construction method for adjacent new construction or simultaneous construction of bridge and subway tunnel

Abstract

The invention discloses a design and construction method for adjacent new construction or simultaneous construction of a bridge and a subway tunnel. When the clear distance between the line positionsof the left subway tunnel and the right subway tunnel is 8.6-13.5 m, a bidirectional framing type section bridge or a bidirectional whole-width type section bridge is adopted as the bridge. One one-way single-width bridge or the two-way whole-width section bridge in the two-way framing type section bridge spans one subway tunnel through a transverse single-span frame beam. The structural center line of the one-way single-width bridge or the two-way whole-width type section bridge is aligned with the structural center line of the crossed subway tunnel, the other subway tunnel crosses underground from the side of the bridge, and the minimum horizontal safe clear distance between the crossed subway tunnel and the adjacent bridge pile foundation is controlled to be 2-4 m. The bridge and the subway tunnel span each other (cross) in the space, it is guaranteed that the spatial distance between the bridge and the subway tunnel reaches the minimum when the bridge and the subway tunnel span each other or cross each other, and mutual safety of structural bodies of the bridge and the subway tunnel is guaranteed through various comprehensive measure methods.

Description

technical field [0001] The invention relates to the technical field of highway, municipal bridge and rail transit subway construction engineering, and in particular to a design and construction method when a bridge and a subway tunnel are adjacently newly built or built together. Background technique [0002] In recent years, with the development of construction, the available space resources on the ground, ground, and underground in large cities have become more and more precious and scarce. The planning of highways, municipal roads, bridges, and rail transit adopts the same corridor line or crosses at local nodes. There are more and more cases where spaces are adjacent to each other and structures are built next to each other; how to better deal with the line position and spatial relationship between the two at the level of planning and design; Under the premise of structural safety, how to minimize the mutual safety distance in space has become an urgent problem to be fac...

AI Technical Summary

Problems solved by technology

[0003] At present, when highways and municipal bridges are adjacent to subway rail transit and cross large rivers together, either consider the alignment of the two and use a dual-purpose bridge for highway and rail, or consider deviating the planned alignment of the two. Enough safe distance, so that the two do not affect each other, but currently less planning and practice of highways, municipal bridges and underground rail transit close to the same line or ride up and down the same line; at the same time, in the corridors of the urban land area How to make municipal roads and rail transit more efficiently and intensively utilize the limited urban space resources and better integrate each other is not yet mature at the level of overall planning and layout, and it is also lacking in specific design. The technical standards and design methods of the system are often seen as tricks, and isolated and sporadic specific solutions to individual problems

Images