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Guardrail and roadbed integrally-reinforced pile anchor structure shaped like a Chinese character 'bo' and construction method thereof

A technology of roadbed and guardrail, which is applied in the direction of infrastructure engineering, roads, roads, etc., can solve problems such as road subsidence deformation, road guardrails are not firm, reinforced roadbed deformation, etc., and achieve strong anti-collision performance and good deformation control effect , Increase the effect of anti-slip force

Pending Publication Date: 2018-07-20
福建省地质工程研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned technical problems, the present invention provides a B-shaped pile-anchor structure and its construction method for the integrated reinforcement of the guardrail and the roadbed, which not only solves the problems of deformation and instability of the existing reinforced roadbed, but also solves the problems caused by this. The problem of deformation of the subsidence subgrade can be solved, and it can also solve the problems of weak guardrails and poor anti-collision performance of the existing highways.

Method used

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  • Guardrail and roadbed integrally-reinforced pile anchor structure shaped like a Chinese character 'bo' and construction method thereof
  • Guardrail and roadbed integrally-reinforced pile anchor structure shaped like a Chinese character 'bo' and construction method thereof
  • Guardrail and roadbed integrally-reinforced pile anchor structure shaped like a Chinese character 'bo' and construction method thereof

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Experimental program
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Effect test

Embodiment 1

[0045] See Figure 1 to Figure 3 , A guardrail and roadbed integrated reinforcement of the Bo-shaped pile anchor structure, including a reinforced steep slope roadbed 10 provided with multiple layers of geogrids 11, panels 20 for supporting the soil, H-shaped steel piles 30, crown beams 40 and anchor 50; before the reinforced steep slope roadbed 10 is filled, the H-shaped steel pile 30 is vertically driven into the foundation to reach a stable ground 100, and the panel 20 is fixed in front of the H-shaped steel pile 30, The reinforced steep slope subgrade 10 is filled between the face plate 20 and the original slope body 200. During the filling process, each layer of geogrid 11 is connected to the face plate 20 through a first connecting member, and each layer of geotechnical The grid 11 and the H-shaped steel pile 30 are connected by a second connecting member 80 pieces or by welding; the crown beam 40 is cast along the length of the road, and the crown beam 40 is connected to...

Embodiment 2

[0053] The difference between this embodiment and the first embodiment is that this embodiment further includes a road guardrail 60 and a fixing member 61, and the road guardrail 60 is fixed on the H-shaped steel pile 30 through the fixing member 61.

[0054] The road guardrail 60 is connected to the H-shaped steel piles by the connecting fixing members 61, which is equivalent to significantly increasing the anchoring depth of the road guardrail 60 in terms of the force mechanism. When the road guardrail 60 is subjected to collision, the vertical H-shaped steel pile 30 It mainly provides bending strength, while the inclined anchor 50 mainly provides tensile strength. Through the synergistic effect of this bu-shaped pile anchor reinforcement structure, at the same time, the H-shaped steel pile 30 is connected to each layer through the iron hook 81 and the buckle 82 The geogrid 11 is connected to more effectively improve the anti-collision performance of the highway guardrail 60, th...

Embodiment 3

[0066] Please combine Figure 1 to Figure 5 The structure diagram shown is a construction method of a Bo-shaped pile-anchor structure with integrated reinforcement of guardrail and roadbed, including the following steps:

[0067] (1) Measure and loft, adopt the form of piling, and set the H-shaped steel pile 30 vertically into the stable bottom layer 100 according to the designed anchoring depth;

[0068] (2) A panel 20 is installed in front of the H-shaped steel pile 30 to support and backfill the soil;

[0069] (3) Pave backfill and geogrid 11 along the original slope 200 next to the road, connect the geogrid 11 to the panel 20 through the first connecting member, and connect the geogrid 11 through the second connecting member 80 or welding Connected with H-shaped steel pile 30, compacted and tamped the soil to fill the reinforced steep slope roadbed 10;

[0070] (4) After the reinforced steep slope subgrade 10 reaches the design elevation of the road, the crown beam 40 is poured al...

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Abstract

The invention relates to a guardrail and roadbed integrally-reinforced pile anchor structure shaped like a Chinese character 'bo'. The structure comprises a reinforced steep roadbed provided with multiple layers of geogrids, a face board used for supporting and stopping a soil body, H-shaped steel piles, crown beams and anchor rods. The H-shaped steel piles are vertically driven in a stable stratum, the face board is fixed to the front faces of the H-shaped steel piles, the geogrids are connected with the face board through first connecting components, the geogrid on each layer is connected with the H-shaped steel piles through second connecting components or welded to the H-shaped steel piles, the crown beams are poured in the length direction of a highway, the H-shaped steel piles on allsection faces of the reinforced steep roadbed are combined together through the crown beams, and the anchor rods are obliquely driven into the H-shaped steel piles and the reinforced steep roadbed from the outer surface of the face board and extend deep into the stable stratum. The invention further provides a construction method of the pile anchor structure. The structure has the beneficial effects that multiple purposes can be achieved through one structure, the stress performance is good, a reinforcing effect is remarkable, and feasibility is high.

Description

Technical field [0001] The invention relates to the field of side slope and geological disaster treatment engineering, and in particular to a P-shaped pile-anchor structure with integrated reinforcement of guardrails and roadbeds and a construction method thereof. Specifically, the highway guardrail and reinforced steep slope roadbed are integrated to strengthen and strengthen The overall stability controls the flexible deformation of the reinforced steep slope subgrade. Background technique [0002] With the development of the western development strategy, the focus of my country's highway construction has gradually shifted to the western mountainous areas with large undulations, complex geological structures and many slopes. However, for such roadbeds with reinforced steep slopes built on mountain slopes, even if the slope is excavated with steps, the backfill area will inevitably have a tendency to slide down the slope as a whole. The interface often becomes a weak surface fo...

Claims

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Application Information

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IPC IPC(8): E01C3/04E02D5/76
CPCE01C3/04E02D5/76
Inventor 张智超
Owner 福建省地质工程研究院
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