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Treatment method and treatment structure capable of repeatedly adjusting settlement difference of two sides of deep soft soil foundation pile foundation track beam

A technology of soft soil foundation and treatment method, which is applied in the direction of infrastructure engineering, soil protection, construction, etc., can solve the problems of improving treatment efficiency, and achieve the effects of reducing operation and maintenance costs, being easy to implement, and convenient to operate

Pending Publication Date: 2019-08-02
CCCC FOURTH HARBOR ENG INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the deficiencies of the prior art, and specifically disclose a treatment method for repeatable adjustment of the settlement difference on both sides of the track beam of the deep soft soil foundation pile foundation, which can effectively solve the traditional "abutment jumping" problem Insufficiencies in the processing, this method not only simplifies the operation procedure, but also reduces the cost of the implementation process, greatly improves the processing efficiency, reduces the construction risk in the processing process, and reduces the operation and maintenance cost

Method used

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  • Treatment method and treatment structure capable of repeatedly adjusting settlement difference of two sides of deep soft soil foundation pile foundation track beam
  • Treatment method and treatment structure capable of repeatedly adjusting settlement difference of two sides of deep soft soil foundation pile foundation track beam

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Effect test

Embodiment 1

[0042] Such as figure 1 , figure 2 As shown in the present invention, the settlement difference of the two sides of the deep soft soil foundation pile foundation track beam can be repeatedly adjusted. It includes a number of transition plates 2 continuously installed on both sides of the track beam 1. 1. There are grouting holes 8 passing through the transition plates 2 at the two ends far away from the track beam 1 or the corresponding subgrade surface layer 3, and the inside of the grouting holes 8 is sequentially provided with a grouting pipe 4 and a grouting core pipe 5. The grouting pipe 4 is provided with a first grout discharge port 41 and a rubber one-way valve 42, and the first grout discharge port 41 and the rubber one-way valve 42 are spaced apart from the bottom of the transition plate 2, and the The gap between the grouting 4 pipe and the transition plate 2 is to be blocked with cement, and the grouting core pipe 5 is provided with a second grout discharge port ...

Embodiment 2

[0057] The differential settlement treatment method described in the present invention is also applicable to the completed structures. When the settlement is too large on both sides of the pile foundation track beam:

[0058] First, a hole is formed at the position where the settlement is too large, the diameter of the hole is A110mm, and the depth of the bottom of the hole is 3m;

[0059] Then, install the grouting pipe 4 with the first grout outlet 41 and the rubber one-way valve 42, and make a record of the length, the pipe is 20cm above the ground; the gap between the boreholes is filled with casing material, and the casing The mixing ratio of materials is: cement:bentonite=0.6~0.8:1.2, repeat steps 5 to 10.

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Abstract

The invention belongs to the technical field of traffic infrastructure, and particularly discloses a treatment method and treatment structure capable of repeatedly adjusting the settlement differenceof two sides of a deep soft soil foundation pile foundation track beam. The treatment method comprises the specific steps: (1) installing transition boards continuously arranged on the two sides of the track beam; (2) reserving a grouting hole; (3) manufacturing a grouting pipe; (4) embedding a grouting pipe; (5) putting a grouting core pipe into the embedded grouting pipe until the grouting corepipe reaches the bottom of the pipe; (6) injecting cement paste from the outer side to the inner side of the track beam; (7) carrying out settlement observation and pressure maintaining at the same time; (8) after grouting is completed, carrying out post-construction settlement observation; (9) cleaning the hole, and pulling out the grouting core pipe; and (10) restoring the appearance of the pavement surface layer structure. The treatment method can effectively overcome the defects existing in traditional bridge abutment bump problem treatment, the operation is relatively simplified, the costof the implementation process is low, the treatment efficiency is greatly improved, meanwhile, the construction risk in the treatment process is reduced, and the operation and maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of traffic infrastructure construction, and in particular relates to a treatment method for differential settlement between different rigidities on both sides of a pile foundation track beam on a deep soft soil foundation. Background technique [0002] On both sides of the pile foundation in the past, due to the different stiffness of different foundations, differential settlement occurs, such as the problem of abutment jumping, which is a common roadbed disease problem in highway construction, and prevents the problem of abutment jumping It is a long-term and arduous task that requires the joint efforts of all parties including construction, design and construction units. Key disease is one of the important hidden dangers of road traffic safety, which seriously affects driving comfort, reduces vehicle speed and road capacity, and damages the social and economic benefits of expressway construction. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E02D35/00
CPCE02D3/12E02D35/005E02D2300/004E02D2300/0018
Inventor 曾子明周红星陈平山
Owner CCCC FOURTH HARBOR ENG INST