Construction method for laterally crossing bridge piles by intersected porous subway tunnels

A construction method and tunnel technology, applied in tunnels, earthwork drilling, infrastructure engineering, etc., can solve the problems of high-speed rail bridge safety hazards, difficulty in laying four tunnels in parallel, and large impact of bridge piles, etc., to solve adverse effects, The effect of ensuring normal operation and reducing reinforcement costs

Inactive Publication Date: 2020-04-03
JINAN RAILWAY TRANSPORT GRP CO LTD +1
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Problems solved by technology

[0003] In the design scheme of the section tunnel for parallel transfer, four tunnels are drawn from the section of the station at the same elevation. The impact of the bridge, four tunnels pass through the same bridge cavity at the same time, and it is difficult to lay out four tunnels in paralle

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  • Construction method for laterally crossing bridge piles by intersected porous subway tunnels
  • Construction method for laterally crossing bridge piles by intersected porous subway tunnels
  • Construction method for laterally crossing bridge piles by intersected porous subway tunnels

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[0039] Example 1

[0040] Attached below figure 1 -Attached Figure 7 The construction method disclosed in this embodiment will be further explained;

[0041] The construction method of stacked multi-hole subway tunnel side-crossing bridge piles includes the following steps:

[0042] Step 1: According to the route planning, lay out multiple lines in the form of overlapping, and re-lay one of the lines, and any three of the multiple tunnels of the multiple lines are triangular;

[0043] Step 2: Isolate and strengthen the high-speed rail bridge piles before the tunnel side passes through the bridge piles;

[0044] Step 3: Carry out the shield crossing construction, construct the tunnels sequentially from bottom to top, grouting reinforcement for the overlapping section of the tunnel, and reinforcement of the lower tunnel before the construction of the upper tunnel.

[0045] In step 1, two tunnels are set up for each line, and adjacent lines are laid out in a stacked form.

[0046] In step ...

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Abstract

The invention discloses a construction method for laterally crossing bridge piles by intersected porous subway tunnels. The construction method comprises the following steps of arranging multiple lines in an intersecting manner according to line planning, intersecting one line again, and forming a triangular manner through any three in the multiple tunnels in the multiple lines; before laterally crossing the bridge piles on the tunnel side, isolating and reinforcing G-series high-speed train bridge piles; and performing shield crossing construction, constructing the tunnels in sequence from bottom to top, performing grouting reinforcing on the intersecting segments of the tunnels, and before upper tunnels are constructed, reinforcing lower tunnels. Through the construction method, the multiple bridge pile crossing lines are arranged in the intersecting manner, the need for reasonable space between the tunnels and the bridge piles can be met, and needs of tunnel stress and G-series high-speed train bridge safety can be met.

Description

technical field [0001] The disclosure belongs to the technical field of rail transit engineering construction, and in particular relates to a construction method for side bridge piles of stacked porous subway tunnels. Background technique [0002] In the design of urban rail transit tunnels, it is inevitable to pass through various types of bridge pile foundations. Most side tunnels are designed to pass through adjacent bridge holes with a single hole. When the bridge span is large, the left and right lines pass through the same bridge hole. If it is small or due to line layout factors, it is difficult to lay out the left and right tunnels parallel to the same bridge hole, the upper and lower superimposed layouts are laid, and the lower tunnel is constructed first and then the upper tunnel is constructed. When the upper tunnel is constructed, the lower tunnel is rigidly supported and reinforced. Determine the installation, inversion method, and removal plan of the reinforcem...

Claims

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Application Information

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IPC IPC(8): E21D9/00E21D9/06E02D27/12
CPCE02D27/12E21D9/001E21D9/06
Inventor 尹长凤王启民王忠仁温法庆黄永亮胡冰冰周浩
Owner JINAN RAILWAY TRANSPORT GRP CO LTD
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