Load-shedding type rigid culvert structure

Abstract

The invention relates to the technical field of geotechnical engineering and road engineering, and particularly discloses a load-shedding type rigid culvert structure, which comprises a foundation, culvert side walls, a culvert top plate, load-shedding blocks and load-shedding holes, wherein the load-shedding blocks are positioned just above the culvert side walls, and form an integral structure together with the culvert side walls, the load-shedding holes are positioned between the two load-shedding blocks just above a culvert, and the interior of each load-shedding hole is filled with light-weight flexible material. The culvert structure has the advantages that after the structure is adopted, the construction and operation are easy and convenient, and the implementation is easy; the pressure of soil at the top of the culvert is obviously reduced, and the problem of cracking of the culvert is effectively solved; one part of load at the top of the culvert is transferred into the surrounding soil through the soil arch effect at the top of the culvert, the other part of load is transferred to the foundation through the culvert side walls, and then the vertical compressive capability of the culvert side walls is fully realized; the maximum bending moment of the culvert side walls is effectively reduced, and the stress distribution of the culvert is more reasonable; the stress asymmetry of the culvert is effectively reduced, and the separation and cracking of the connecting part of the top of the culvert and the side wall are avoided; the load-shedding effect is obviously improved.

Description

technical field [0001] The invention relates to the technical fields of geotechnical engineering and road engineering, in particular to a load-reducing rigid culvert structure. Background technique [0002] The thickness of covering soil on highway culverts is generally high, especially on high-fill road sections of mountainous expressways. Due to the large filling load, and the complex topography and geological conditions in some areas, the stress and deformation characteristics of culverts are often complex, and there are problems such as stress concentration in culverts and uneven settlement of structures, which are likely to cause problems of various degrees. In engineering circles, there is a saying of "ten culverts and nine cracks". These diseases can cause cracking, leakage or water accumulation in the culvert, and cause damage to the culvert structure, or even collapse, seriously affecting the normal use of the road. [0003] In order to reduce the earth pressure o...

AI Technical Summary

Problems solved by technology

At present, there are many load reduction measures for culverts. Some load reduction measures have high requirements for construction technology, are time-consuming and laborious, and are difficult to implement. Once improperly operated during the construction process, the load reduction effect will be affected; some load reduction measures The cost of the measure is relatively high, so it is not suitable to promote

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