CN211227910U

CN211227910U - Tropical rainforest is with high road bed of filling

Info

Publication number: CN211227910U
Application number: CN201921709193.2U
Authority: CN
Inventors: 杜思勇; 刘建平; 朱国建; 于罗斌
Original assignee: CCCC First Highway Engineering Co Ltd
Current assignee: CCCC First Highway Engineering Co Ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-08-11
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a tropical rainforest is with high road bed of filling, including the basic unit, run through in the basic unit and be equipped with the cement mixing pile more than two, the upper end of the cement mixing pile more than two is fixed with the mattress layer jointly, the soil stone mixture layer has been laid to the upper end of mattress layer, the equidistant square steel more than two that is equipped with in the soil stone mixture layer, the equidistant welding in upper end of square steel has the connecting steel plate more than two, and the upper end of the connecting steel plate more than two is fixed with steel jointly and moulds two-way geogrid, the cladding has anti-filter geotechnological cloth on the steel-plastic two-way geogrid, red clay layer has been laid to the upper end of soil stone mixture layer. The utility model discloses can guarantee that each basic unit plays fine supporting role to the road surface, can effectively avoid the road surface below condition such as hole to the various basic units of avoiding that can be fine appear the condition such as diffusion, collapse, further promotion security.

Description

Tropical rainforest is with high road bed of filling

Technical Field

The utility model relates to a road bed technical field especially relates to a tropical rainforest is with high road bed of filling.

Background

Tropical rainforests are a forest ecosystem common to tropical regions near the equator on the earth, and are distributed mainly in southeast asia, northern australia, amazon river basin in south america, conga river basin in africa, central america, and numerous pacific islands.

Under the influence of high temperature and heavy rain, the weathering effect of tropical rain forest regions is strong, so that the soil layer is very thick, and various soil forming processes are rapid and thorough. In this environment, excessive rain water brings about strong leaching action, dissolves and takes away almost all soluble minerals, such as salt base of potassium, sodium, magnesium, calcium and the like, so that the soil is barren due to loss of nutrients required by plants. Most of karilong countries need to be imported due to lack of lime, sand and other blending raw materials, the price is high, the construction is inconvenient, the engineering cost, the construction period and other comprehensive factors are considered, the improvement of the red clay is not feasible, the exploration of the physical and mechanical properties of the red clay and the compaction performance index of the red clay as a roadbed material become inevitable choices of people, PST related design and construction related data in engineering practice are collected, the roadbed stress and deformation under the load action are researched through various indoor tests on the red clay excavation roadbed PST, comprehensive contrastive analysis data are obtained, and the consistent conclusion is obtained, and the road cutting red clay roadbed bearing design adopts fifty centimeters or eighty centimeters according to related experimental results.

Because of the characteristics of tropical rainforest soil and how to avoid the problems of diffusion and sliding of a roadbed in a high-temperature rainy environment, how to ensure the firmness of the roadbed is a key for improving the quality and prolonging the service life of the roadbed, a high-fill roadbed for the tropical rainforest is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a tropical rainforest high fill roadbed.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a high fill subgrade for tropical rainforests comprises a base layer, wherein more than two cement mixing piles penetrate through the base layer, a bedding course is jointly fixed at the upper ends of the more than two cement mixing piles, a soil-stone mixture layer is laid at the upper ends of the bedding course, more than two square steels are arranged in the soil-stone mixture layer at equal intervals, more than two connecting steel plates are welded at the upper ends of the square steels at equal intervals, a steel-plastic bidirectional geogrid is jointly fixed at the upper ends of the more than two connecting steel plates, a reversed filter geotechnical cloth is wrapped on the steel-plastic bidirectional geogrid, a red clay layer is laid at the upper end of the soil-stone mixture layer, the reversed filter geotechnical cloth and the steel-plastic bidirectional geogrid are both located in a red clay layer, a compacted gravel layer is laid at the upper end of the red clay layer, a fiber soil layer is laid at the upper end of the compacted gravel layer, and a fixing frame is laid, and rib plates are fixed on two sides of the upper end of the fixed frame, a stone-filled embankment layer is paved on the upper end of the fixed frame, and the rib plates are positioned in the stone-filled embankment layer.

Preferably, outer protecting plates are laid on two sides of the red clay layer, and a plurality of through holes are formed in the outer protecting plates at equal intervals.

Preferably, the upper end of the stone-filled embankment layer is arranged in an arc shape.

Preferably, the outer guard plate is disposed obliquely.

Preferably, the fixing frame and the rib plate are both made of concrete materials.

Preferably, the thickness of the red clay layer is 80 cm.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through the matching of the cement soil mixing piles, the mattress layer, the red clay layer, the stone filling embankment layer and other base layers, the firmness and the stability of the base layers can be improved step by step, the pavement can be supported well, the situations of cavities and the like below the pavement can be effectively avoided, and the safety is improved;

2. through the matching of the steel-plastic bidirectional geogrid, the reversed filter geotextile, the outer guard plate, the rib plate and other components, the conditions of diffusion, collapse and the like of various base layers can be well avoided, and the base layers can be further favorably ensured to have good supporting effect on the road surface;

to sum up, the utility model discloses can guarantee that each basic unit plays fine supporting role to the road surface, can effectively avoid the road surface below condition such as the cavity to the various basic units of avoiding that can be fine appear the condition such as diffusion, collapse, further promotion security.

Drawings

Fig. 1 is a cross-sectional view of a high fill roadbed for a tropical rainforest according to the present invention;

fig. 2 is an enlarged view of a position a of the high fill roadbed for the tropical rainforest; fig. 3 is a schematic structural view of an outer guard plate of a high fill roadbed for a tropical rainforest according to the present invention; fig. 4 is a schematic structural view of a steel-plastic bidirectional geogrid of a high fill roadbed for a tropical rainforest, which is provided by the utility model;

in the figure: the concrete foundation comprises a stone-filled embankment layer 1, rib plates 2, fixing frames 3, a fiber soil layer 4, an outer guard plate 5, reverse filtration geotextile 6, a steel-plastic bidirectional geogrid 7, a compacted gravel layer 8, a red clay layer 9, a soil-stone mixture layer 10, a mattress cushion layer 11, a base layer 12, a cement-soil mixing pile 13, square steel 14, a connecting steel plate 15 and through holes 16.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a high fill subgrade for tropical rainforests comprises a base layer 12, more than two cement soil mixing piles 13 penetrate through the base layer 12, a mattress layer 11 is jointly fixed at the upper ends of the more than two cement soil mixing piles 13, the cement soil mixing piles 13 are operated by adopting a four-spraying four-mixing process, the diameter of each mixing pile is 0.5m, the pile length exceeds the thickness of a soft foundation by not less than 1m, the pile spacing is 1.5m and is arranged in an equilateral triangle, after the cement soil mixing piles 13 are formed, a graded broken stone mattress layer 11 with the thickness of 50cm is filled on the top surface of each mixing pile, and the cement soil mixing piles 13 and soil jointly bear load through the mattress layer 11, so that the possibility of generating settlement is reduced. In the utility model, an earth-rock mixture layer 10 is laid on the upper end of a mattress layer 11, more than two square steels 14 are arranged in the earth-rock mixture layer 10 at equal intervals, more than two connecting steel plates 15 are welded on the upper ends of the square steels 14 at equal intervals to improve the connection firmness, the upper ends of the more than two connecting steel plates 15 are jointly fixed with a steel-plastic bidirectional geogrid 7, the steel-plastic bidirectional geogrid 7 is coated with an anti-filtering geotechnical cloth 6, a red clay layer 9 is laid on the upper end of the earth-rock mixture layer 10, the thickness of the red clay layer 9 is 80cm or 50cm, the anti-filtering geotechnical cloth 6 and the steel-plastic bidirectional geogrid 7 are both positioned in the red clay layer 9, the steel-plastic bidirectional geogrid 7 is used for increasing the bearing capacity of a roadbed and prolonging the service life of the roadbed, the blocking effect can be played on the two sides of the red clay layer 9 through the arrangement of the steel, avoiding lateral displacement. The utility model discloses in, compaction metalling 8 has been laid to the upper end of red clay layer 9, fibre soil layer 4 has been laid to the upper end of compaction metalling 8, fixed frame 3 has been laid to the upper end of fibre soil layer 4, the upper end both sides of fixed frame 3 all are fixed with gusset 2, fixed frame 3 and gusset 2 all adopt concrete material to make, promote its fastness, stone-filled embankment layer 1 has been laid to the upper end of fixed frame 3, stone-filled embankment layer 1's upper end is the arc setting, thereby conveniently make the pitch layer of laying also become the arc setting, on the verge of draining, guarantee the clean and tidy on road surface, gusset 2 is located stone-filled embankment layer 1, can play fine guard action, avoid it to produce the side direction and move.

The utility model discloses in, outer casing 5 has all been laid to the both sides of red clay layer 9, and equidistant being equipped with a plurality of through-holes 16 on the outer casing 5, the slope of outer casing 5 sets up, can be fine protect red clay layer 9, avoid it to produce the side direction and move to be equipped with the green plants such as the turf of being convenient for plant of through-hole 16 on the outer casing 5, can play fine effect that prevents the landslide. In the utility model, when in use, the cement mixing pile 13 is inserted into the base layer 12 to play a good supporting role, thereby well preventing settlement, the mattress layer 11 can make the cement mixing pile 13 and soil jointly bear load, further lowering the possibility of settlement, the soil-stone mixture layer 10 can well play a supporting role, and can well disperse the pressure on the upper part, the tensile property is improved through the matching of the square steel 14, the connecting steel plate 15, the steel-plastic bidirectional geogrid 7, the anti-filtering geotextile 6 and other components, thereby well playing a limiting role on the red clay layer 9, increasing the bearing capacity of the roadbed, prolonging the service life of the roadbed, playing a blocking role on the two sides of the red clay layer 9, avoiding lateral displacement, further avoiding lateral displacement through the outer guard plate 5, well playing a supporting role on the stone-filled embankment layer 1 at the upper end, the rockfill embankment layer 1 can be well protected through the rib plates 2.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A tropical rainforest is with high fill road bed, includes basic unit (12), its characterized in that: the soil cement mixing pile foundation comprises a base layer (12), more than two soil cement mixing piles (13) penetrate through the base layer (12), a mattress layer (11) is fixed to the upper ends of the more than two soil cement mixing piles (13) jointly, a soil-stone mixture layer (10) is laid on the upper end of the mattress layer (11), more than two square steels (14) are arranged in the soil-stone mixture layer (10) at equal intervals, more than two connecting steel plates (15) are welded to the upper ends of the square steels (14) at equal intervals, a steel-plastic bidirectional geogrid (7) is fixed to the upper ends of the more than two connecting steel plates (15) jointly, a reverse filtering geogrid (6) is wrapped on the steel-plastic bidirectional geogrid (7), a red clay layer (9) is laid on the upper end of the soil-stone mixture layer (10), the reverse filtering geogrid (6) and the steel-plastic bidirectional geogrid (7) are located in the red clay layer (9), and a compacted gravel layer (8) is laid on the upper, fibre soil layer (4) have been laid to the upper end of compaction rubble layer (8), fixed frame (3) have been laid to the upper end of fibre soil layer (4), the upper end both sides of fixed frame (3) all are fixed with gusset (2), fill out stone embankment layer (1) has been laid to the upper end of fixed frame (3), gusset (2) are located fill out stone embankment layer (1).

2. The high fill subgrade for tropical rainforests according to claim 1, characterized in that: outer guard plate (5) have all been laid to the both sides of red clay layer (9), outer guard plate (5) equidistant are equipped with a plurality of through-holes (16).

3. The high fill subgrade for tropical rainforests according to claim 1, characterized in that: the upper end of the stone-filled embankment layer (1) is arranged in an arc shape.

4. The high fill subgrade for tropical rainforests according to claim 2, characterized in that: the outer guard plate (5) is obliquely arranged.

5. The high fill subgrade for tropical rainforests according to claim 1, characterized in that: the fixing frame (3) and the rib plates (2) are both made of concrete materials.

6. The high fill subgrade for tropical rainforests according to claim 1, characterized in that: the thickness of the red clay layer (9) is 80 cm.