Deep excavated soil cutting slope protection structure and construction method

Abstract

The invention discloses a deep excavated soil cutting slope protection structure and a construction method. The deep excavated soil cutting slope protection structure comprises a slope, a pavement, protection plates and a plurality of protection assemblies. Each protection assembly is formed by fixedly connecting a pull rod and an expansion nozzle. The slope is provided with the multiple protection plates in a covered manner, and the protection assemblies penetrate the slope and are arranged in the slope. Each expansion nozzle comprises expansion blades, force transmission blades and a sliding pipe. One end of each pull rod serves as an expansion end, and the other end of each pull rod serves as a protection plate connecting end. The expansion end of each pull rod is movably connected with the corresponding expansion blades in a hinged manner. Each pull rod is sleeved with the corresponding sliding pipe in a sliding manner. Each force transmission blade is connected between the corresponding sliding pipe and expansion blade. One end of each force transmission blade is hinged to the corresponding sliding pipe, and the other end of each force transmission blade is hinged to the corresponding expansion blade. The protection plate connecting end of each pull rod is correspondingly and fixedly connected with the corresponding protection plate. The deep excavated soil cutting slope protection structure and the construction method have the beneficial effects that the structure is simple, and construction is convenient; and the stability of the slope structure can be effectively enhanced, and good pavement performance can be achieved under the severe natural and traffic conditions.

Description

technical field [0001] The invention relates to the technical field of disaster prevention and reduction in road engineering, in particular to a deep excavation soil road cutting slope protection structure and a construction method. Background technique [0002] Since the beginning of the 21st century, my country's transportation infrastructure has made gratifying achievements, basically realizing "county-to-county expressways". In the process of expressway construction, due to the influence of terrain and linearity, it is not uncommon for highways to cross mountains and jump rivers. Cuttings in mountainous areas with high soil and slopes are often feared projects by design and construction units. In areas with poor engineering geology or areas with severe natural weather, high slope cuttings often suffer from subsidence, erosion and other diseases, which may cause slope collapse accidents in severe cases and cause traffic interruption. This has seriously affected the safet...

AI Technical Summary

Problems solved by technology

But for soil cuttings, slowing down the slope means increasing the distance and time of slope runoff, which will cause more water to infiltrate into the slope, increasing the weight of the slope soil and affecting the strength of the soil will have varying degrees of negative impact

Therefore, it is difficult for the designers to grasp the slope value of the deep excavation cutting side slope, and the existing engineering experience is difficult to cover all soil types, and it is difficult to ensure the stability under the disturbance of different construction machinery and external dead load.

Scholars at home and abroad have proposed adding anchors to the cutting slope to increase the stability of the soil through the friction between the anchor and the soil. However, due to the lack of construction quality inspection standards and equipment, construction units often drill holes in the soil. , the anchor rod is directly inserted into the soil. During the operation, the anchor rod and the soil are difficult to interact with each other, and the desired effect cannot be achieved.

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