A subgrade structure spanning active faults

Abstract

The invention discloses a roadbed structure spanning an active fault, the roadbed structure includes a roadbed foundation, a displacement monitoring system and a homing and pushing system; the roadbed foundation is divided into a left disk area and a right disk area in the horizontal direction, and the The side of the creeping direction of the left disc area is provided with a homing and pushing system, and the displacement monitoring system is set at the boundary between the left disc area and the right disc area. When the displacement monitoring system detects that the horizontal creep displacement of the subgrade reaches the threshold , activate the homing and pushing system to push the box culvert and surface layer to the initial position. The roadbed structure of the present invention avoids the problems of line growth and passenger and cargo transportation time caused by the line avoiding active faults, greatly saves economic costs, and the roadbed construction and maintenance are simple, high in safety and reliability, and can be used in creeping active fault areas. widely used.

Description

technical field [0001] The invention relates to the technical field of roadbed structures, in particular to a roadbed structure spanning active faults. Background technique [0002] Active faults refer to faults that are active or active in the latest geological period. They are the most important geological structures in the crust. Thousands of kilometers, the small ones are observed under a microscope. Because it has a great impact on the stability of the project construction area, especially in road construction, most choose to avoid the active fault fracture zone, which brings a series of problems such as line increase, passenger and freight transportation time increase, and project construction cost. [0003] With the rapid development of my country's economic construction, it is urgent to further understand and control the road engineering construction problems in active fault areas. Engineering problems such as pavement cracking and deformation, sag development and u...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above problems, the present invention provides a roadbed structure across active faults, using the low friction performance of the PTFE slide to set the roadbed into a slidable structure, when the displacement monitoring system monitors the horizontal creep displacement of the superstructure of the roadbed When the threshold is reached, the homing and pushing system can be activated to push the box culvert and the surface layer to the initial position. The subgrade structure has good flexibility, high safety and reliability, and the reasonable design reduces the impact of continuous creep dislocation deformation on the subgrade The adverse effects produced avoid the occurrence of engineering problems such as pavement cracking and deformation, sag development and uneven settlement

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