A road subsidence subsidence repair device and repair method
A technology for roads and subgrades, applied in the field of road subsidence subsidence repair devices, can solve problems such as high cost, unsatisfactory subsidence treatment effects of subgrade subsidence, and technical indicators that cannot meet the requirements, so as to improve service life, eliminate subsidence diseases of subgrade roads, and improve road traffic and less impact on the environment
Active Publication Date: 2016-08-24
山西省交通科技研发有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to solve the technical problems in the prior art that the treatment effect on roadbed subsidence is not ideal, the cost is high, and various technical indicators cannot meet the requirements, and then provide a roadbed subsidence treatment effect and repair quality. Easy-to-control roadbed subsidence repair device and repair method
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Embodiment 1
[0062] A high-fill loess embankment of an expressway has a fill height of 16m and a single road width of 12.25m. Three years after it was opened to traffic, the subgrade subsidence occurred. The subsidence section was 23m long and the maximum subsidence depth reached 5cm. Pavement pointing, filling and repairing, pavement diseases still occur repeatedly.
[0063] According to the condition of roadbed subsidence, a roadbed subsidence repair device is adopted, see figure 1 , which consists of steel arches, micro piles, concrete bases, steel backing plates, filled concrete and grouting pipes. It is determined that the steel arch 1 is an I20b steel arch. The web height of each arch frame is 200mm, the width of the flange plate is 102mm, and the thickness of the flange plate is 11.4mm. The reserved camber is 50cm, and the length of each section is 3m. It is assembled in 8 sections. The assembly is connected by M30 bolt 101.
[0064] The specific implementation steps of its repair...
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The invention belongs to the technical field of roadbed repair, and discloses a roadbed subsidence repairing device and method. The repairing device comprises a steel arch, mini piles, a concrete abutment body, a steel shim, filled concrete and grouting pipes. The load of a roadbed subsidence section can be transmitted to a non-subsidence roadbed area with larger strength, the non-subsidence roadbed area surrounds the roadbed subsidence section, and the non-subsidence roadbed area does not subside; a certain compaction function to a weak roadbed can be achieved through high-pressure grouting, the deformation resistance of the roadbed is improved through filling of gaps and cracks of the surface layer of the weak roadbed, and the further subsidence of the weak roadbed can be effectively controlled. Meanwhile, the situation that surface rainfall is immersed in a roadbed channel is interdicted through filling of the concrete and the grouting body, and the roadbed is prevented from being immersed in water, softened and disengaged again. The roadbed subsidence repairing device and method have the advantages that the subsidence treatment of the roadbed is achieved, the technology is simple, the quality can be controlled, the construction progress is fast, the roadbed subsidence problem caused by reduction of the strength of the roadbed is basically eliminated, and the service life of the highway road surface structure is prolonged.
Description
technical field [0001] The invention relates to the field of civil engineering, and relates to a roadbed subsidence repairing device and a repairing method. Background technique [0002] As the foundation and support of the pavement structure, the subgrade plays a key role in the service behavior of the upper pavement structure. However, there are many high-fill embankments in mountainous areas, especially in loess areas. Due to construction problems and the influence of various natural environmental factors, the subgrade subsidence Diseases often occur, causing damage to the pavement structure layer and reducing the flatness, which seriously threatens the normal operation of the road and the safety of people's lives and property. [0003] At present, the commonly used subsidence treatment methods include compacted sand pile (gravel pile) method, deep mixing method (including powder spraying grouting spraying) and grouting method, etc. These methods are complicated in proces...
Claims
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IPC IPC(8): E01C3/04E02D5/30E02D15/02E02D3/12
CPCE01C3/04E02D3/12E02D5/30E02D15/02E02D2250/003E02D2300/002
Inventor 赵建斌申俊敏张军孙志杰董立山
Owner 山西省交通科技研发有限公司