CN210507518U

CN210507518U - Inclined empty box retaining wall

Info

Publication number: CN210507518U
Application number: CN201921122402.3U
Authority: CN
Inventors: 尹晓明
Original assignee: Shanghai Investigation Design and Research Institute Co Ltd SIDRI
Current assignee: Shanghai Investigation Design and Research Institute Co Ltd SIDRI
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-05-12
Anticipated expiration: 2029-07-17

Abstract

The utility model belongs to a tilting air-chest barricade in hydraulic engineering, highway engineering, geotechnical engineering, port engineering field. The technical scheme is as follows: an inclined empty box retaining wall comprises a bottom plate and a retaining wall fixed on the bottom plate, wherein the retaining wall comprises a front baffle and a rear baffle which are obliquely arranged towards the rear of the wall, a cavity is formed between the front baffle and the rear baffle, and soil is filled in the cavity; the front end part of the bottom plate is connected with the root part of the front baffle plate and does not extend forwards out of the front baffle plate. The hollow box retaining wall structure solves the problem that the existing hollow box retaining wall structure in the engineering is not stressed enough to be economical and safe, and is better in stress structure, higher in safety and reliability and better in economic benefit.

Description

Inclined empty box retaining wall

Technical Field

The utility model relates to a fields such as hydraulic engineering, highway engineering, geotechnical engineering, port engineering especially relate to an empty case barricade that keeps off soil.

Background

Retaining walls are retaining structures commonly used in construction to support the lateral pressure of soil or other particulate material to prevent a slope of soil or unstable rock from breaking and sliding downward. With the modern development of society, the engineering scale is huge more and more, and the hillside height that needs protection retaining is also higher and higher, and common barricade such as cantilever type, gravity type, counterfort formula barricade is not suitable for higher retaining height because of its structure and the restriction of material. At the moment, engineers usually choose a balance weight retaining wall or an empty box retaining wall, the height of the retaining wall can reach 8-30 m, but the foundation stress of the balance weight retaining wall is large, the foundation is suitable for the condition that the foundation bearing capacity is high and the foundation is a rock foundation or good soil, and the requirement on the applicable condition is strict; common empty box barricade requires the condition not high to the ground, and application scope is wide, but ordinary empty box barricade atress structure still can not full play material performance and structural integrity ability, and the shortcoming is as follows: firstly, the front baffle has small bearing force, so that material waste is caused, and the front baffle needs to be optimized; and secondly, the bottom plate of the empty box retaining wall usually extends 0.8 to 2 meters according to the height of the retaining wall so as to increase the force arm of the dead weight of the retaining wall and the soil thereon, thereby increasing the anti-overturning moment of the retaining wall and maintaining the stability of the retaining wall. However, the toe board is used as a cantilever board structure to bear huge bending moment and shearing force, and is often a weak link of the retaining wall structure; when the retaining height is higher, the horizontal water and soil pressure acting on the retaining wall is overlarge, so that the wall body is usually overlarge in size, the retaining wall bottom plate is overlong, and the investment is greatly increased; and fourthly, similar to the common retaining wall, the retaining wall has small stress on the foundation at the soil-facing side, large stress on the foundation at the soil-back side and uneven stress distribution on the foundation.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an empty case barricade of tilting solves the problem of the insufficient economic safety of empty case barricade structure atress in the existing engineering, and its atress structure is more excellent, and fail safe nature is higher, and economic benefits is better.

The technical scheme of the utility model is that: an inclined empty box retaining wall comprises a bottom plate and a retaining wall fixed on the bottom plate, wherein the retaining wall comprises a front baffle and a rear baffle which are obliquely arranged towards the rear of the wall, a cavity is formed between the front baffle and the rear baffle, and soil is filled in the cavity; the front end part of the bottom plate is connected with the root part of the front baffle plate and does not extend forwards out of the front baffle plate.

Based on the technical characteristics: the bottom plate extends rearwardly beyond the tailgate.

Based on the technical characteristics: a buttress is arranged behind the rear baffle, and the root of the buttress is fixed on the bottom plate.

Based on the technical characteristics: a plurality of partition walls are arranged in the cavity at intervals, two side edges of each partition wall are fixedly connected with the front baffle and the rear baffle respectively, and the bottom edge of each partition wall is fixedly connected with the bottom plate.

Based on the technical characteristics: the included angle between the rear baffle plate and the bottom plate is more than or equal to 60 degrees.

Based on the technical characteristics: the included angle between the front baffle and the bottom plate is more than or equal to 70 degrees.

The utility model has the advantages that:

the method has the advantages that: the front baffle is obliquely arranged towards the rear of the wall, and the front lower part of the rear wall is protruded towards the front of the wall after the front baffle is obliquely arranged, so that the whole center of the retaining wall and the soil body on the retaining wall moves towards the rear of the wall, the force arm of the retaining wall and the soil dead weight on the retaining wall is increased, the anti-overturning moment of the retaining wall is increased, the stability of the retaining wall is increased, the effect of a front toe plate in the prior art is replaced, the weak link of the front toe plate is reduced, and the effect of the front baffle is fully exerted. In addition, the gravity center moves backwards, the front and rear substrate stress can be averaged, and the maximum substrate stress of the soil-backed side is reduced, so that the substrate stress distribution is more uniform, and the stress of the retaining wall is more excellent. The included angle between the front baffle and the bottom plate is preferably larger than or equal to 70 degrees, if the included angle is too small, the structure stress is unfavorable, the plate thickness is increased, and therefore the engineering cost is increased. The front baffle and the rear baffle can be inclined backwards too much, and the occupied space is increased.

The advantages are two: the rear baffle plate inclines backwards towards the wall, according to the soil pressure theory, under the condition of the same soil filling and soil retaining height, the active soil pressure of the wall which is obliquely arranged upwards is the minimum, the active soil pressure of the wall which is obliquely arranged downwards is the maximum, and the vertical wall is arranged between the two walls. Because the rear baffle plate inclines backwards to the wall, the soil pressure is greatly reduced, the unloading effect is achieved, the size of the wall body can be reduced, the investment is saved, and the angle between the rear baffle plate and the bottom plate is not smaller than 60 degrees.

The advantages are three: when the retaining wall is built, the front retaining plate and the rear retaining plate are inclined walls, and the wall back can be combined with the excavated temporary slope, so that earth backfill can be reduced, the earth engineering amount is saved, and the investment is reduced.

The advantages are four: wide application range and large range of applicable soil retaining height.

To sum up, the utility model provides a novel barricade structure application scope is wide, and the atress structure is more excellent to reducible investment cost.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference numerals are intended to: a front baffle 1; a tailgate 2; a base plate 3; a buttress 4; a partition wall 5; a drain hole 6; 7, earth and stone; the ground is filled with soil 8.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, 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," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, 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 according to specific situations by those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, an inclined empty box retaining wall is arranged in front of the ground filling 8, the front wall refers to the side without ground filling 8, and the rear wall refers to the side with ground filling 8. The ground fill 8 is shown only as an illustration and the fill height may be equal to or lower than the wall top height of the inclined empty box retaining wall.

The inclined empty box retaining wall comprises a bottom plate 3, a front baffle plate 1 and a rear baffle plate 2 which are obliquely arranged towards the back of the wall, a buttress 4 and a partition wall 5, wherein soil and stones 7 are filled in cavities of the front baffle plate 1 and the rear baffle plate 2 during use, and the inclined empty box retaining wall does not have a front toe board which is common in the existing retaining wall, namely the front end part of the bottom plate 3 is connected with the root part of the front baffle plate 1, namely the inclined empty box retaining wall does not extend out of the front baffle plate forwards. The included angle between the rear baffle and the bottom plate is preferably more than or equal to 60 degrees; the included angle between the front baffle and the bottom plate is preferably more than or equal to 70 degrees.

The bottom plate 3 extends out of the rear baffle 2 backwards, the root parts of the buttresses 4 are fixed on the bottom plate 3, one buttresses are arranged at intervals, and the buttresses can be cancelled according to the stress condition. The base plate 3 may or may not extend beyond the tailgate 2, such as extending beyond the tailgate 2, to increase the friction surface of the base plate 3. The partition walls 5 are arranged between the front baffle plate 1 and the rear baffle plate 2 at intervals, namely, two side edges of the partition walls 5 are respectively fixedly connected with the front baffle plate 1 and the rear baffle plate 2, and the bottom edges of the partition walls 5 are fixedly connected with the bottom plate 3. The partition wall 5 can be integrally cast with the front baffle plate 1 and the rear baffle plate 2, so that the structural integrity and the integral rigidity of the retaining wall can be enhanced. The front baffle 1 can be provided with a drain hole 6, the drain hole 6 can be made of PVC pipe, the back of the front baffle can also be provided with a reverse filter, and if necessary, the back baffle can also be provided with a drain hole structure to reduce the underground water level. The arrangement of the drain holes is only illustrated in the figures and is per se of the prior art.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an inclined empty box barricade, contains bottom plate (3) and fixes barricade on bottom plate (3), its characterized in that: the retaining wall comprises a front baffle (1) and a rear baffle (2) which are obliquely arranged towards the rear of the wall, a cavity is formed between the front baffle (1) and the rear baffle (2), and soil is filled in the cavity; the front end part of the bottom plate (3) is connected with the root part of the front baffle (1).

2. The inclined empty box retaining wall as defined in claim 1, wherein: the bottom plate (3) extends backwards out of the rear baffle (2).

3. The inclined empty box retaining wall as defined in claim 2, wherein: a buttress (4) is arranged behind the rear baffle (2), and the root of the buttress (4) is fixed on the bottom plate (3).

4. The inclined empty box retaining wall as claimed in claim 1, 2 or 3, wherein: the cavity is internally provided with a plurality of partition walls (5) at intervals, two side edges of each partition wall (5) are respectively fixedly connected with the front baffle (1) and the rear baffle (2), and the bottom edge of each partition wall (5) is fixedly connected with the bottom plate (3).

5. The inclined empty box retaining wall as defined in claim 1, wherein: the included angle between the rear baffle (2) and the bottom plate (3) is more than or equal to 60 degrees.

6. The inclined empty box retaining wall as defined in claim 1, wherein: the included angle between the front baffle (1) and the bottom plate (3) is more than or equal to 70 degrees.