CN212270819U

CN212270819U - High road bed low riverbed water damage prevention and treatment structure

Info

Publication number: CN212270819U
Application number: CN202022121610.0U
Authority: CN
Inventors: 魏学利; 陈宝成; 宋亮; 赵楠; 董刚; 孙云龙; 李宾; 周豫新; 李秋申; 周欣弘; 赵龙
Original assignee: Xinjiang Transportation Planning Surveying And Design Institute
Current assignee: Xinjiang Transportation Planning Surveying And Design Institute
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-01-01
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a prevention and cure structure is ruined to low riverbed water of high road bed relates to highway prevention and cure field of water damage. The utility model integrates the footing protection flat, the ladder slope protection and the road shoulder wall into a whole protection structure, by changing the style of the local foundation structure, not only the foundation toe of the structure is ensured to be not easy to be washed by the river, but also the stability of the roadbed is ensured, the instability of a single protection form under the working conditions of a high embankment and a low riverbed is effectively avoided, thereby effectively controlling the scouring damage of rivers, floods and the like to the road from bottom to top, saving the engineering cost and the maintenance cost, avoiding the repeated water damage, compared with other single protection structures in the prior art, the anti-scouring device has the advantages of better anti-scouring effect, higher stability and anti-overturning performance, more durability in engineering and investment saving, can meet the drainage function requirements of different-scale fluids (debris flow or flood) in a river channel, can meet the transportation safety requirements of increasingly numerous super-large heavy vehicles, and has a certain use prospect.

Description

High road bed low riverbed water damage prevention and treatment structure

Technical Field

The utility model relates to a prevention and cure field is destroyed to highway water specifically is a prevention and cure structure is destroyed to low riverbed water of high road bed.

Background

The water damage is one of main disease types of mountain roads, is widely distributed and seriously damaged, and can induce secondary disasters such as suspended roadbed, deformed retaining wall, pavement cracking and the like besides directly destroying buildings such as roadbed, bridges and culverts, thereby causing road breaking and traffic jam, seriously influencing and endangering the operation of transportation and even directly threatening the safety of lives and properties. In recent years, with the deep development of western major development in China and the proposal of one-by-one strategy in China, the road construction will be developed in a new round, and the management work of the water damage disasters of the roads becomes the important part of the smooth traffic safety of the roads and is increasingly urgent; the highway water damage disasters in the valley area of the downhill area are frequent, and the conventional protective structures such as retaining walls, spur dikes and the like are widely applied and have good protective effects; however, in some extreme terrain areas, the water damage working condition of 'high roadbed and low riverbed' often occurs, the single road shoulder wall form cannot meet the control requirement, and the novel protection form can combine the road shoulder wall, the revetment and the apron, so that the integral protection with better performance is realized, and the protection form can be widely applied in the future road construction process.

Due to the limitation of topographic and topographic conditions, mountain roads are often built along mountains and rivers, rivers along the mountains have the hydrological characteristics of the mountains, flood convergence time is short, transfer speed is high, water flow is turbulent, a flood process with large peak height is easily formed, local debris flow development is caused, erosion and erosion of the side slope below a roadbed along the river is serious, and the side wing foundation of a road shoulder wall is often the primary position easy to be damaged by erosion.

The water damage of local highways in mountainous areas often has the characteristic of multiple points, the rescue difficulty is high, the time is long, the conventional roadbed protection form cannot meet the requirements of the water damage and scouring damage of high embankments and low water levels, the engineering quantity and cost and the corresponding broken road and vehicle stopping time are increased, and great difficulty and great loss are brought to the construction and maintenance of highways. The highway protective structure and material characteristics, water flow scouring erosion force, pavement dynamic load, damage mode and other effects are comprehensively analyzed, and the base part of the protective structure is a key part for erosion resistance, skid resistance and overturn resistance, and plays a vital role in safety and stability of a highway subgrade and a pavement.

How to effectively avoid local damage and whole instability caused by the protection form under extreme water flow scouring, the focus of attention is focused on implementing the whole stability of the protection structure and ensuring the safe and smooth running of a highway, the conventional roadbed protection structure comprises a road shoulder wall, a grout rubble side slope and the like, the conventional roadbed protection structure can only aim at flood and debris flow disasters with small water flow impact and poor damage performance to a certain extent, and cannot play a good role in preventing and treating disasters under high roadbed low water level working conditions, if the conventional roadbed protection form is still used for treatment under the working conditions, the problems of high engineering cost, repeated repair and the like can be caused, and therefore, the high roadbed low river bed water damage prevention and treatment structure is provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, a low riverbed water destruction prevention and treatment structure of high road bed is provided, it is with footing apron, ladder bank protection and road shoulder wall triplex are integral protective structure as an organic whole even, through changing local foundation structure pattern, overall structure's antidumping nature and stability have not only been increased, the erosion and corrosion resistance and the erosion basement performance of lower part basis have also been increased, avoid endangering the safety on road bed road surface because of preventing and treating the local destruction of structure simultaneously, the safety of fully ensured highway is unblocked.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a prevention and cure structure is ruined to low riverbed water of high road bed, includes road shoulder wall, notch cuttype bank protection and footing apron, the road shoulder wall sets up the upper end at the notch cuttype bank protection, the footing apron sets up the lower extreme at the notch cuttype bank protection, one side of road shoulder wall is connected with the road surface, the wash port has been seted up at the middle part of road shoulder wall, the lower extreme of road shoulder wall is provided with the wall toe.

Preferably, settlement joints are arranged between the road shoulder wall and the road surface, the settlement joints are distributed according to a certain interval, the interval is 10-20m, one side of the stepped revetment is a riverbed, the settlement joints are perpendicular to the flow direction of riverbed water flow, and the settlement joints are filled with asphalt floc.

Preferably, the road shoulder wall, the stepped revetment and the footing apron are an integral protective structure.

Preferably, the height of the road shoulder wall is 6-12m, the top width is 0.5-2.0m, the coefficient of front slope of the wall body is 0-0.35, the back slope of the wall body is generally 0-0.25, and the width of the toe of the wall is 0.5-1.0 m.

Preferably, the length of the stepped slope protection platform is 1-3m, the step width is 0.5-1.0m, the height and the width are similar, the number of the step groups of the stepped slope protection is more than 5, and finally the slope protection integrally has a slope rate of 1:1 or 1: 1.5.

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

fully utilizes the advantages of the foot protection, the anti-scouring of the step protection, the stability of the step protection slope, the good protection of the shoulder wall of the road along the river, and the like, when the three types of protection structures are connected together to form a novel protection form, the foundation slope toe of the structure is not easy to be washed by rivers, the stability of the roadbed is ensured, the instability of a single protection form under the working conditions of a high embankment and a low riverbed is effectively avoided, thereby effectively controlling the scouring damage of rivers, floods and the like to the road from bottom to top, saving the engineering cost and the maintenance cost, avoiding the repeated water damage, compared with other single protection structures in the prior art, the anti-scouring structure has the advantages of better anti-scouring effect, higher stability and anti-overturning performance, more durable engineering and investment saving, can meet the drainage function requirements of different-scale fluids (debris flow or flood) in a river channel, and can meet the transportation safety requirements of increasingly large heavy vehicles.

Drawings

Fig. 1 is a schematic view of the overall structure of a water damage prevention structure for high roadbed and low riverbed of the utility model;

fig. 2 is a structural elevation view of the water damage prevention structure for high roadbed and low riverbed of the utility model.

In the figure: 1. a pavement; 2. a road shoulder wall; 3. a drain hole; 4. a wall toe; 5. step-shaped slope protection; 6. and (4) protecting the feet.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

A high roadbed low riverbed water damage prevention structure comprises a shoulder wall 2, a step-shaped slope protection 5 and a footing apron 6, wherein the shoulder wall 2, the step-shaped slope protection and the footing apron 6 are connected into an integral protection form from top to bottom, the shoulder wall 2 is attached to the side of a highway along a river, and the roadbed is supported and protected; the step revetment is connected with a road shoulder wall 2 to form a foundation part of the road shoulder wall 2, and the step revetment is gradually laid downwards along the surface depth of the river bank; the bottommost structure is a footing protection flat 6 which extends into a certain depth below the water surface of a riverbed to practically protect the foundation of a prevention structure, so that the foundation is not easy to be impacted and eroded by water flow, when the water flow of a riverway is large, the normal water level of the riverbed generally submerges part of step revetments and the footing protection flat 6, the flood level is designed at the height of the toe of a shoulder wall 2, the step revetments and the footing protection flat 6 can be totally submerged by the predicted historical maximum flood level, and the shoulder wall 2 with a certain depth can also be submerged, the novel prevention form for water damage of high roadbed and low riverbed debris flow is mainly aimed at the incomplete application of other previous prevention forms for water damage under the working conditions of high roadbed and low riverbed in special sections of mountainous areas and the problems of local instability damage, erosion toe and the like caused by using the protective structures such as old type shoulder walls 2 and the like, and the advantages of the respective protective performances of the three types of the protective structures are fully, various structures are reasonably combined and keep good stability and overturn resistance.

In the water flow direction along the riverbed, a plurality of settlement joints distributed at certain intervals are arranged from the wall on the outer side of the roadbed wall 2 to the foundation of the roadbed wall 2, the intervals are generally 10-20m, the settlement joints are perpendicular to the water flow direction of the riverbed, the interior of the settlement joints are generally filled with asphalt floc, and the arrangement of the settlement joints is not only favorable for releasing temperature deformation stress, but also favorable for reducing the influence of differential settlement of local sections on the overall stability of the roadbed wall 2.

The upper structure is as follows: the height H1 of the wall body of the shoulder wall 2 is generally 6-12m, and the height of the wall body of the shoulder wall 2 can be properly increased when meeting a high embankment low riverbed working point of a deep cutting valley section; the width of the top 2 of the road shoulder wall is 0.5-2.0 m; the width B4 of the toe 44 is generally 0.5-1.0 m; the coefficient m1 of the front slope of the wall body is generally 0-0.35, and the coefficient m2 of the rear slope of the wall body is generally 0-0.25.

The structure of the middle part is as follows: the length L of the step-shaped slope protection 5 access shoulder wall 2 slope foot can be determined according to the field situation, and the platform length is generally 1-3 m; the step width B2 is 0.5-1.0m, and the height H2 is similar to the width; the number of the step groups of the step-shaped revetment 5 is generally more than 5, and finally the whole revetment has a slope ratio of 1:1 or 1: 1.5.

The lower structure, the footing apron 6, the height of the apron can be determined according to the field condition, the apron foundation needs to be ensured to be at a certain depth below the bottom surface of the riverbed, the requirement of the maximum scouring depth of the river course water flow is ensured to be met, and H1 can be 4.0-7.0 m; the berm wall slope rates n1 and n2 may take the same value, typically 0-0.35.

The shoulder wall 2 can adopt a reinforced concrete structure, or a grouted stone structure, or a reinforced concrete foundation and concrete wall structure, or a reinforced concrete foundation and grouted stone wall structure, or a concrete foundation and grouted stone wall structure, and the like, no matter what structural materials are adopted, reinforcing steel bars are required to be arranged at the joint of the bearing plate at the heel of the toe 44 and the shoulder wall 2 and at the bottom of the tooth wall so as to increase the tensile strength and the overall stability of the wall, wherein double-sided reinforcing steel bars are adopted at the contact part of the bearing plate at the heel of the toe 44 and the shoulder wall 2, the prestressed reinforcing steel bars generally adopt HRB335(20MnSi) hot-rolled thread steel, the diameter of the main reinforcing steel bars is 12-30, and the distance between the reinforcing steel bars is 20-40 cm; the stirrups are made of common steel bars, the diameter of each stirrup is not less than phi 10, the distance between the stirrups is not more than 1/3h2, and the stirrups are encrypted at the contact part of the pressure bearing plate at the wall heel and the road shoulder wall 2; the distributed structural steel bars are ordinary steel bars, the diameter of the steel bars is phi 8-12, the spacing is not more than 20cm, the bottom of the tooth wall is provided with double rows of reinforcing bars, the diameter of the steel bars is phi 12-20, the spacing is 20-30cm, HPB235(A3) steel is generally adopted, all main bar net protective layers are not less than 4cm, stirrup bar net protective layers are not less than 2.5cm, and distributed bar net protective layers are not less than 2.0 cm.

The integrated protection structure integrates the footing apron 6, the step slope protection and the road shoulder wall 2, and not only increases the overturn resistance and the stability of the whole structure, but also increases the erosion resistance and the erosion base performance of the lower foundation by changing the style of the local foundation structure, and simultaneously avoids the safety of the roadbed and the road surface 1 from being endangered due to the local damage of the prevention and control structure, thereby fully ensuring the safe and smooth road.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a low riverbed water of high road bed destroys prevention and cure structure, includes road shoulder wall (2), notch cuttype bank protection (5) and footing armguard (6), its characterized in that: the road shoulder wall (2) is arranged at the upper end of the stepped revetment (5), the footing flat protectors (6) are arranged at the lower end of the stepped revetment (5), one side of the road shoulder wall (2) is connected with the pavement (1), the middle of the road shoulder wall (2) is provided with drain holes (3), and the lower end of the road shoulder wall (2) is provided with wall toes (4).

2. The high subgrade low riverbed water damage prevention structure of claim 1, which is characterized in that: the road shoulder wall (2) and the road surface (1) have been seted up between the subsiding crack, the subsiding crack is distributed according to certain interval, and the interval is 10-20m, one side of notch cuttype bank protection (5) is the riverbed, the subsiding crack perpendicular to riverbed rivers flow direction, the inside pitch catkin that adopts of subsiding crack fills.

3. The high subgrade low riverbed water damage prevention structure of claim 1, which is characterized in that: the road shoulder wall (2), the step-shaped revetment (5) and the footing apron (6) are integrated into an integral protective structure.

4. The high subgrade low riverbed water damage prevention structure of claim 1, which is characterized in that: the height of the road shoulder wall (2) is 6-12m, the top width is 0.5-2.0m, the coefficient of front slope of the wall body is 0-0.35, the back slope of the wall body is generally 0-0.25, and the width of the toe of the wall is 0.5-1.0 m.

5. The high subgrade low riverbed water damage prevention structure of claim 1, which is characterized in that: the length of the platform of the stepped revetment (5) is 1-3m, the step width is 0.5-1.0m, the height and the width are similar, the number of the step groups of the stepped revetment is more than 5, and finally the integral revetment has a slope ratio of 1:1 or 1: 1.5.