A construction method of an energy-dissipating and shock-absorbing composite shed-cave structure that resists the impact of landslides and collapses

Abstract

The invention discloses a construction method of an energy-dissipation and seismic-mitigation combined shed tunnel structure capable of resisting the landslide collapse body impact. The energy-dissipation and seismic-mitigation combined shed tunnel structure comprises top beams, shed tunnel plates, a composite buffer cushion layer and energy dissipation and seismic mitigation devices. The top beams are arranged on the two sides of the ground of a to-be-protected area. The shed tunnel plates are supported at the tops of the top beam through the energy dissipation and seismic mitigation devices.A waterproof layer is constructed on the top surface of one shed tunnel plate; then a foam cushion layer, a steel plate layer and a geocell reinforced soil layer are constructed sequentially, geocells on the steel plate layer are stretched, paved, and unfolded fully in the construction process, each geocell at the end part is fixed by using a pin, the space of each geocell is filled with a soilbody fully, and then the geocell is filled with soil gradually to a corresponding designed elevation to form a composite buffer cushion layer. The construction is simple and convenient; the service life is long; the the self-weight of the shed tunnel structure is reduced, the landslide collapse body impact resistance and the energy absorption and shock absorption performance of the shed tunnel structure are improved, and the safety and stability of the shed tunnel structure are improved. The method is especially suitable for shed tunnel structure construction of landslide disaster frequent road sections.

Description

technical field [0001] The invention relates to the technical field of slope protection and disaster management, and relates to a shed-cave structure, in particular to a construction method for an energy-consuming and shock-absorbing combined shed-cave structure resistant to the impact of landslides and collapsed bodies. Background technique [0002] In the southwestern part of my country, due to the strong uplift of the Qinghai-Tibet Plateau and the rapid and deep incision of the river, the slope is high and steep, the unloading is strong, and the rock mass structure is complex. Under the joint action of natural factors such as rainfall seepage and earthquake disturbance, and human factors such as mountain digging and deforestation, it is easy to cause slope instability, and frequent rockfall and debris flow disasters. Landslides and landslides such as falling rocks and debris flows have posed a serious threat to traffic construction and transportation safety in Southwest m...

AI Technical Summary

Problems solved by technology

However, once the energy of falling rocks is large, both steel wire grids and polystyrene foam (EPS) are prone to plastic failure, and the later maintenance costs are high

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