Railway tunnel bottom defect treatment technology based on assembly type beam slab pile

A disease remediation and prefabricated technology, applied in infrastructure engineering, construction, etc., can solve the problems of slow construction speed, poor quality, large amount of engineering, etc., and achieve the effect of fewer construction procedures, faster construction speed, and less masonry work.

Inactive Publication Date: 2014-01-15
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (3) The structural design of the tunnel bottom is weak and the drainage design is unreasonable
[0010] (4) Unreasonable construction technology and poor quality
[0011] (5) Routine maintenance and repairs are not in place
One common point of these construction methods is to increase the bearing capacity of the base, but they have not improved the structure of the bottom of the current tunnel structure, and cannot completely eliminate the occurrence of bottom diseases
The base replacement method requires the original base to be demolished and then re-applied, so the project volume is large, the construction speed is slow, and the construction quality cannot be guaranteed; the effect of grouting reinforcement and other construction methods is not ideal

Method used

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  • Railway tunnel bottom defect treatment technology based on assembly type beam slab pile
  • Railway tunnel bottom defect treatment technology based on assembly type beam slab pile
  • Railway tunnel bottom defect treatment technology based on assembly type beam slab pile

Examples

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with drawings and embodiments.

[0026] (1) if figure 2 and image 3 Ballast (12) is removed and rails and concrete ties (18) are supported with restraint beams (14) as shown.

[0027] (2) Excavate slots for placing beams (16) and drill holes (15) for placing piles according to the predetermined positions in the design. The holes should pass through the concrete filling layer (10) and inverted arch (11) to reach more than 50cm of bedrock. Such as Figure 4 and Figure 6 shown.

[0028] (3) After the slotting and drilling process is completed, put the prefabricated steel pipe pile into the drilled hole, and fill the gap between the pile and the hole with grout. Such as Figure 5 and Figure 7 shown.

[0029] (4) After the grout is solidified, lay the prefabricated beams (16) and prefabricated slabs (17), and backfill the ballast, such as Figure 5 and Figure 8 shown. Start the construction ...

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Abstract

The invention discloses a railway tunnel bottom defect treatment technology based on an assembly type beam slab pile and relates to a rapid treatment technology aiming at solving the problem that the driving potential safety hazard occurs in an existing railway tunnel due to bottom defects. The railway tunnel bottom defect treatment technology comprises the steps of enabling lines to be arranged in the air and drilling a hole at the bottom to enable a precast pile to be embedded; and installing a precast beam slab to form a bottom bearing structure. According to the technology, a precast beam slab pile component is introduced, a main bearing component is prefabricated out of the hole, the integral construction speed is quick, and the construction period is short; in the process of construction in the hole, only part of the lines need to be arranged in the air, an existing bottom structure does not need dismantling, construction processes are fewer, the masonry amount is small, and the cost is reduced.

Description

Technical field [0001] The invention relates to the field of existing railway tunnel disease control engineering, in particular to bottom disease control technology for groundwater development. Background technique [0002] According to relevant data, more than 65% of the current railway tunnels in my country have diseases. Among the many diseases, the diseases at the bottom of the tunnel are the most prominent, widely distributed and large in number, which directly affects the safety of my country's railway transportation. How to quickly and effectively control the bottom diseases of existing railway tunnels not only has technical significance, but also has great social and economic significance. [0003] The main reasons for the occurrence of diseases at the bottom of railway tunnels are as follows: [0004] (1) Repeated dynamic action of the train [0005] Since the basement structure of the tunnel cannot be well bonded and deformed with the basement surrounding rock, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/12
Inventor 仇文革冯冀蒙孙克国
Owner SOUTHWEST JIAOTONG UNIV
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