CN215165711U

CN215165711U - Hybrid retaining structure

Info

Publication number: CN215165711U
Application number: CN202120846627.4U
Authority: CN
Inventors: 陈健; 杨登科; 张祥; 王俊; 谢胜
Original assignee: China Railway No 5 Engineering Group Co Ltd; Fourth Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Current assignee: China Railway No 5 Engineering Group Co Ltd; Fourth Engineering Co Ltd of China Railway No 5 Engineering Group Co Ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-12-14
Anticipated expiration: 2031-04-23

Abstract

The utility model provides a mixed retaining structure, which is symmetrically arranged on two sides of a road surface and comprises roadbed filling, a bottom plate and a side wall, wherein the roadbed filling is arranged on one side of the wall back of a wall panel, a stable structure layer is formed at the bottom of the roadbed filling, and the stable structure layer comprises a reinforcing steel bar net rack formed on the surface of the roadbed and a substrate material layer formed on the reinforcing steel bar net rack; the bottom plate comprises a concrete plate body and a wall head fixing groove formed on the concrete plate body; and the side wall is fixed set up in on the first fixed slot of wall, the equidistant cartridge in the side wall outside has the reinforcement stock, the reinforcement stock is cavity slip casting stock, inserts in the road bed soil filling under the slant, and with reinforcing bar net rack welds even. The utility model discloses can with the anchor power and the road bed stress when subsiding evenly share the side wall on, the reinforcement system wholeness of formation is good, stability is high.

Description

Hybrid retaining structure

Technical Field

The utility model relates to a highway construction field among the municipal works construction field specifically is a can effectively reduce the ground and subside the hybrid retaining structure that influences the road surface.

Background

Along with the progress of modern society, the demand of society on road construction is increasing day by day, and in the field of road construction, the control on the slope settlement of weak subgrades has become an important problem restricting the highway construction. The existing highway embankment usually adopts reinforcement measures to improve the engineering characteristics of the embankment, and the embankment side slope is protected through a roadbed retaining structure.

However, the existing retaining structures for the roadbeds are simple in structure and not obvious in roadbed settlement resistance effect, and the overall or local instability, collapse and slippage of the roadbeds can still occur even after the retaining structures are formed. This possibility is particularly evident in steep slope roads and roads with high subgrade fill heights. The construction of the engineering is carried out after the large-scale retaining structure engineering is adopted for prefabrication, but the large-scale retaining structure is obviously limited by sites, is unfavorable for material transportation and structure construction, has low work efficiency and high manufacturing cost, is easy to crack and deform after long-term operation, and is difficult to meet the safety requirement even if measures such as local grout replenishing, repairing and the like are adopted.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the present invention is to provide a hybrid retaining structure to solve the drawbacks of the above background art.

The utility model provides a technical problem adopt following technical scheme to realize:

a mixed retaining structure is symmetrically arranged on two sides of a road surface and comprises roadbed filling, a bottom plate and side walls, wherein the roadbed filling is arranged on one side of the wall back of a wall panel, a stable structure layer is formed at the bottom of the roadbed filling, and the stable structure layer comprises a steel bar net rack formed on the surface of the roadbed and a substrate material layer formed on the steel bar net rack; the bottom plate comprises a concrete plate body and a wall head fixing groove formed on the concrete plate body; and the side wall is fixed set up in on the first fixed slot of wall, the equidistant cartridge in the side wall outside has the reinforcement stock, the reinforcement stock is cavity slip casting stock, inserts in the road bed soil filling under the slant, and with reinforcing bar net rack welds even.

As a further limitation, the side wall is a three-layer composite structure, the back side of the side wall is a reinforced concrete wall surface, the side wall is a cast-in-place reinforced concrete wall surface, and a steel slag concrete layer is filled between the reinforced concrete wall surface and the cast-in-place reinforced concrete wall surface to serve as a filling layer.

As a further limitation, the roadbed filling is formed by filling the stacked structure filling with consistent compactness, and adjacent filling layers are separated by geogrids; the geogrids are paved along the length direction of the section of the embankment, and lap joint allowance is reserved in the geogrids of adjacent soil layers.

As a further limitation, the substrate material layer is a steel slag and asphalt mixture layer, the steel slag and asphalt mixture layer covers the surface of the bottom plate, and the paving plane of the steel slag and asphalt mixture layer is 8-15 mm higher than the surface of the bottom plate.

As a further limitation, the insertion spacing distance of the reinforcing anchor rods on the outer side of the side wall is 3-5 m.

As a further limitation, the reinforcing anchor rod is obliquely downwards inserted into roadbed filling by 8-15 degrees.

As a further limitation, the diameter of the reinforcing anchor rod is 20-30 mm, and the length of the reinforcing anchor rod is 0.8-1.5 m.

Has the advantages that: the utility model discloses compact structure, cost are lower, and the atress is reasonable, couples together side wall and bottom plate to be provided with the stock and link firmly, play the effect of stabilizing the side wall, and the yawing force accessible both sides reinforcing bar rack of embankment is balanced to drawing, and the overall stability of structure can be good, is applicable to the lower bad ground area of bearing capacity, also can adapt to the differential settlement of ground well.

Drawings

Fig. 1 is a schematic diagram of a preferred embodiment of the present invention.

Wherein: 1. filling soil into the roadbed; 2. a geogrid; 3. reinforcing the anchor rod; 4. reinforcing the concrete wall surface; 5. a steel slag concrete layer; 6. the reinforced concrete wall surface is cast in situ; 7. a base plate; 8. a roadbed layer; 9. a steel bar net rack; 10. a layer of substrate material.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 1, in the present embodiment, the hybrid retaining structure is symmetrically disposed on two sides of a road surface, and includes roadbed filling 1, a bottom plate 7 and side walls, wherein the side walls are three-layer composite structures, and include an inner reinforced concrete wall surface 4, a steel slag concrete layer 5 as a middle filling layer, and an outer cast-in-place reinforced concrete wall surface 6, the reinforced concrete wall surface 4 is a prefabricated wall surface structure, the cast-in-place reinforced concrete wall surface 6 is directly formed by cast-in-place and is disposed at intervals outside the reinforced concrete wall surface 4, and the steel slag concrete layer is directly filled in a gap space reserved between the reinforced concrete wall surface 4 and the cast-in-place reinforced concrete wall surface 6 and is hardened and formed.

By reinforced concrete wall 4, slag concrete layer 5, the side wall direct forming that cast in situ reinforced concrete wall 6 is constituteed is on bottom plate 7, this bottom plate 7 is including the concrete plate body of arranging road bed layer 8 surface in the tie, road bed layer 8 is for leveling and compaction treatment's soil base layer, the concrete plate body upper surface correspondence of bottom plate 7 is provided with the wall head retention groove, bottom plate 7 is through the fixed side wall of this wall head retention groove, and make the side wall keep the state of erectting, the side wall is stretched out in the bottom plate 7 outside, so that the side wall keeps steadily.

A reinforcing steel bar net rack 9 is arranged on the bottom surface of the back side of the side wall, the thickness of the reinforcing steel bar net rack 9 is 8cm, the reinforcing steel bar net rack is formed by overlapping net rack units made of a plurality of pieces of finish-rolled deformed steel bars with the diameter of 22mm, a steel slag and asphalt mixed material layer is formed on the surface of the reinforcing steel bar net rack 9 and serves as a substrate material layer 10, and the paving thickness of the substrate material layer 10 is 12-15 mm higher than that of the surface of a bottom plate 7; roadbed filling 1 is formed on the substrate material layer 10, the height of the roadbed filling 1 is 5-6 cm higher than the upper surface of the side wall, the roadbed filling is formed by filling a laminated structure filling with consistent compactness, and adjacent filling layers are separated by geogrids 2; the geogrids 2 are paved along the length direction of the section of the embankment, and overlapping allowance is left in the geogrids 2 of adjacent soil layers for overlapping and fixing.

In addition, the outside of the side wall is also provided with reinforcing anchor rods 3, the reinforcing anchor rods 3 are hollow grouting anchor rods with the diameter of 25mm and the length of 1.2m, the reinforcing anchor rods 3 are inserted and fixed on the outside of the side wall at equal intervals, the inserting intervals are 5m, the reinforcing anchor rods 3 are obliquely inserted into the roadbed filling 1 downwards for 15 degrees, the reinforcing anchor rods are welded with the reinforcing steel bar net rack 9 into a whole at the inserting ends, the outside of the reinforcing steel bar net rack is fixed on the outer surface of the cast-in-place reinforced concrete wall surface 6 through fixing plates, and the relevant road base body can be reinforced through grouting after construction is completed.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A mixed retaining structure is symmetrically arranged on two sides of a road surface and comprises roadbed filling, a bottom plate and side walls, and is characterized in that the roadbed filling is arranged on one side of the back of a wall panel, a stable structure layer is formed at the bottom of the roadbed filling, and the stable structure layer comprises a steel bar net rack formed on the surface of the roadbed and a substrate material layer formed on the steel bar net rack; the bottom plate comprises a concrete plate body and a wall head fixing groove formed on the concrete plate body; and the side wall is fixed set up in on the first fixed slot of wall, the equidistant cartridge in the side wall outside has the reinforcement stock, the reinforcement stock is cavity slip casting stock, inserts in the road bed soil filling under the slant, and with reinforcing bar net rack welds even.

2. The hybrid retaining structure of claim 1, wherein the side wall is a three-layer composite structure, the back side of the side wall is a reinforced concrete wall surface, the side wall is a cast-in-place reinforced concrete wall surface, and a steel slag concrete layer is filled between the reinforced concrete wall surface and the cast-in-place reinforced concrete wall surface as a filling layer.

3. The hybrid retaining structure of claim 1, wherein the roadbed filling is filled and molded by using a laminated structure filling material with consistent compactness, and adjacent filling materials are separated by geogrids.

4. The hybrid retaining structure of claim 3, wherein the geogrids are laid along the length of the section of the embankment, and overlapping margins are left in the geogrids of adjacent soil layers, and the geogrids positioned adjacent to each other are overlapped and fixed at the overlapping margins.

5. The hybrid retaining structure of claim 1, wherein the backing material layer is a steel slag asphalt mixture layer, the steel slag asphalt mixture layer covers the surface of the bottom plate, and the pavement plane of the steel slag asphalt mixture layer is 8-15 mm higher than the surface of the bottom plate.

6. The hybrid retaining structure of claim 1, wherein the reinforcement anchors are spaced 3-5 meters apart on the outside of the sidewall.

7. The hybrid retaining structure of claim 1, wherein the reinforcing anchor rods are inserted into the roadbed filling obliquely downwards by 8-15 degrees.

8. The hybrid retaining structure of claim 1, wherein the reinforcing anchor has a diameter of 20-30 mm and a length of 0.8-1.5 m.