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

A construction method and technology for bridges, applied in tunnels, buildings, mining equipment, etc., can solve the problems of immature, less planned highway and rail traffic, adjacent to parallel lines or collinear upper and lower riding, etc., to achieve small footprint requirements, reduce The effect of cost and design

Active Publication Date: 2019-06-21
GUANGZHOU MUNICIPAL ENG DESIGN & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment 1

[0063] Such as Figures 1a-1f As shown, a bridge and a subway tunnel shown in this embodiment are adjacent to the design and construction method when newly built or built together, including the following situations:

[0064]a. When the net distance between the lines of the left and right subway tunnels 61 is 8.6-13.5m or above, the bridge can adopt a two-way full-section bridge, and the two-way full-section bridge passes through a horizontal single-span frame beam Or the continuous beam spans a subway tunnel, and makes the structural centerline of the two-way full-section bridge vertically aligned (that is, coincides) with the structural centerline of the spanned subway tunnel, so that the bridge pile foundation and frame beam can ride across the subway in the horizontal direction The left and right sides of the tunnel are symmetrical, so that both sides of the subway tunnel can lay bridge pile foundations according to a small safe distance, and the minimum horizontal safe di...

Embodiment 2

[0099] Taking the cast-in-place main girder of the support in water as an example, this embodiment provides a specific case where a bridge and a subway tunnel are built adjacent to each other. This case is constructed using the method described in Embodiment 1, and the details are as follows:

[0100] The construction scale of the new bridge is two-way six-lane. The bridge includes the main bridge in the middle and the approach bridges at both ends. Due to the adverse effects of the adjacent construction of the subway, the main bridge adopts a 136m single-span under-supported space arch beam composite bridge that is not sensitive to settlement; the approach bridge adopts two kinds of prestressed concrete continuous box girders with specifications of 2x30m and 3x35m to connect.

[0101] The span combination of the bridge is 2x30+3x35+136+3x35+2x30m, with a total length of 466m. The main girder body of the main bridge is a prestressed concrete box girder, which adopts a fish-bell...

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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...

Claims

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Application Information

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IPC IPC(8): E02D27/14E02D27/32E02D27/42E21D9/00
Inventor 宁平华唐明裴欧键灵钟勇郭钰瑜陈水盛粟洪王鹏汪荷玲曹志光刘杰麦梓浩凌晨
Owner GUANGZHOU MUNICIPAL ENG DESIGN & RES INST CO LTD
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