CN110306588A - Panel module unit for reinforced earth retaining wall and reinforced earth retaining wall - Google Patents

Abstract

A panel module unit for reinforced soil retaining walls, including a vertical plate, a horizontal plate and a tenon of a reinforced concrete structure integrally formed, the horizontal plate is vertically arranged on one side of the vertical plate, and the tenon is directly connected to the vertical plate The bottom edge of the vertical board is connected and its protrusion is set on the downward extension surface of the vertical board; the vertical board is also provided with a drainage hole, and the horizontal board is provided with a reserved hole for tenon insertion. The invention also discloses a reinforced earth retaining wall, which comprises a plurality of above-mentioned panel module units dislocated up and down, exposed steel bars on one side of the riser, and geotechnical reinforcement materials fixedly connected with the exposed steel bars. The entire reinforced earth retaining wall has a step-back stepped shape, which can effectively reduce the earth pressure behind the wall and improve the stability of the wall; greening is planted in the groove formed by the assembly of the upper and lower panel units, which has a beautifying effect. The environment improves the ecology; the present invention uses panel module units, which can be prefabricated in advance, and has the advantages of convenient construction, short construction period, and obvious economic benefits.

Description

Panel module unit for reinforced earth retaining wall and reinforced earth retaining wall

technical field

The invention belongs to the technical field of geotechnical engineering, and in particular relates to a panel module unit for a reinforced earth retaining wall and a reinforced earth retaining wall.

Background technique

In recent years, my country's infrastructure construction has been advancing rapidly. In highway, railway, municipal and other engineering fields, reinforced earth retaining walls are widely used in the support of fill slope engineering. As a flexible retaining structure, reinforced soil retaining wall has the advantages of simple construction, short construction period, saving land occupation, beautiful appearance, and low cost.

Existing reinforced earth retaining walls have many different types in terms of panel form and reinforcement materials, but they generally have the following deficiencies: (1) the face wall of reinforced earth retaining walls is often perpendicular to the ground, Sensitive to deformation, it is easy to form uneven and uneven walls, which will affect its use effect. (2) The earth pressure behind the vertical panel of the reinforced earth retaining wall is too large, which will affect the stability of the reinforced earth retaining wall to a certain extent, especially under the action of traffic dynamic load and earthquake load, it is more likely to cause the retaining wall to lose stability. (3) The existing reinforced earth retaining wall panels are often not convenient for greening and planting, and it is difficult to carry out side slope greening. (4) The construction of the reinforced earth retaining wall face wall poured on site will increase the difficulty of the project to a certain extent and prolong the construction period.

Patent document CN201811090360 discloses a multi-stage green assembled cantilever reinforced soil retaining wall, which is arranged on the filling soil body in a step-by-step manner. Concrete cantilever retaining wall segments are spliced horizontally, between the top of the next cantilever reinforced soil retaining wall and the bottom of the previous group of cantilever reinforced soil retaining walls, the uppermost cantilever reinforced soil Steps are formed between the top of the retaining wall and the slope of the filling soil, and green plants are planted in the steps to form a green belt; two adjacent reinforced concrete cantilever retaining wall segments of the same level cantilever reinforced soil retaining wall are inserted The structure forms a connection; the geogrid type tie bars are arranged layer by layer in the filling soil, and the outer ends of each geogrid type tie bar are fixedly connected with the vertical arms of the corresponding cantilever type reinforced soil retaining wall. However, the connection between the upper and lower levels is not tight enough, so that a wide horizontal distance needs to be maintained between the upper and lower levels to ensure the stability of the retaining wall.

Therefore, a new panel module unit and a reinforced soil retaining wall for reinforced soil retaining walls are needed.

Contents of the invention

The purpose of the present invention is to provide a panel module unit and a reinforced earth retaining wall for a reinforced earth retaining wall, to solve the problem that the surface wall of the existing reinforced earth retaining wall proposed in the background technology is perpendicular to the ground and affect its stability However, pouring reinforced earth retaining wall panels on site will increase the difficulty of the project and prolong the construction period.

In order to achieve the above object, the present invention provides a panel module unit for reinforced earth retaining walls, the panel module unit includes a vertical plate, a horizontal plate and a tenon of a reinforced concrete structure integrally formed, the horizontal plate is vertical It is arranged on one side of the vertical plate, the tenon is directly connected to the bottom edge of the vertical plate and protrudes from the downward extending surface of the vertical plate, and the vertical plate is also provided with drainage holes. The horizontal plate is provided with a reserved hole for downwardly inserting the tenons of the adjacent panel module units on the upper layer.

Further, the vertical plate is also provided with exposed steel bars, the exposed steel bars form a plane parallel to the horizontal plate, and the exposed steel bars are located below the horizontal plate.

Further, the exposed steel bar and the surface of the riser jointly enclose a rectangular space.

Further, the distance between the top of the plane where the exposed steel bars are located and the bottom surface of the horizontal plate is 1/5-4/5 of the height of the vertical plate.

Further, two tenons are symmetrically arranged on each panel module unit, and two reserved holes are correspondingly arranged on the horizontal plate.

Further, in the thickness direction of the vertical plate, the width of the horizontal plate is D, and the horizontal distance d between the center position of the reserved hole and the surface of the vertical plate is 1/ of the width D of the horizontal plate 4~3/4.

Further, the connection between the horizontal plate and the vertical plate is located at the upper half of the vertical plate, and the drainage hole is located at the lower half of the vertical plate.

The present invention also provides a reinforced soil retaining wall, which includes a plurality of panel module units arranged in dislocation up and down, and the panel module units include a vertical plate, a horizontal plate and an integrally formed reinforced concrete structure. The tenon, the horizontal plate is vertically arranged on one side of the vertical plate, the tenon is directly connected with the bottom edge of the vertical plate and its protrusion is arranged on the downward extending surface of the vertical plate; the horizontal plate The board is provided with a reserved hole for the tenons of the adjacent panel module units on the upper layer to be inserted downward, and the exposed steel bar is also provided on the vertical plate, and the exposed steel bar self-forms a plane parallel to the horizontal plate, and The exposed steel bar is located below the horizontal plate; the reinforced soil retaining wall also includes geotechnical reinforcement material fixedly connected with the exposed steel bar, and the dislocation of the panel module unit is inserted by two or more tenons of the upper panel module unit respectively. In the reserved holes of the two adjacent panel module units below.

Further, the reinforced earth retaining wall is provided with a panel foundation under the bottom panel module unit; the two vertical boards of the upper and lower adjacent panel module units and the horizontal boards of the lower panel module unit form a Grooves for planting.

Further, the vertical plate of the panel module unit is also provided with a through-hole-shaped drainage hole passing through the surface; the distance between the top of the plane formed by the exposed steel bar and the bottom surface of the horizontal plate is 1/5 to 4/5 of the height; in the thickness direction of the vertical plate, the width of the horizontal plate is D, and the horizontal distance d between the center position of the reserved hole and the surface of the vertical plate is 1/4 to 3/4 of the width D of the horizontal plate; the connection between the horizontal plate and the vertical plate is located in the upper half of the vertical plate.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention adopts the panel module unit whose shape is "├" by improving the panel shape of the panel module unit of the reinforced earth retaining wall. The upper and lower panel module units are dislocated and assembled by interlocking and interlocking the tenon at the lower end of the vertical plate of the upper panel module unit and the reserved hole on the lower panel module unit horizontal plate, forming a step-back recess between the upper and lower panel module units. grooves, and make the entire reinforced earth retaining wall face stepped back into a stepped shape, changing the situation that the traditional reinforced earth retaining wall panel is in a vertical state. Compared with the existing reinforced earth retaining wall, the stepped stepped reinforced earth retaining wall provided by the invention can effectively reduce the earth pressure behind the face wall and improve the stability of the reinforced earth retaining wall; at the same time, the upper and lower panel modules The grooves formed by unit dislocation assembly are filled with soil for green planting, which can beautify the surrounding environment and improve the slope ecology. The green landscape can improve the driving comfort of the driver and reduce the probability of traffic accidents; in addition, the reinforced soil retaining The wall adopts modular assembled panels, which can be prefabricated in the factory in advance, and has the advantages of convenient construction, short construction period, and obvious economic benefits.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. Hereinafter, the present invention will be described in further detail with reference to the drawings.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is the structural representation of the reinforced earth retaining wall of a kind of embodiment in the present invention;

Fig. 2 is the cross-sectional structure schematic diagram of the reinforced earth retaining wall of a kind of embodiment in the present invention;

Fig. 3 is a schematic structural view of the outside of a panel module unit for a reinforced soil retaining wall according to an embodiment of the present invention;

Fig. 4 is a schematic structural view of the inside of a panel module unit for a reinforced earth retaining wall according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of the outer structure of the upper and lower panel module units dislocated and assembled according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of the inner structure of the upper and lower panel module units assembled in dislocation according to an embodiment of the present invention;

Among them, 1. Panel module unit; 2. Geotechnical reinforcement material; 3. Panel foundation; 4. Groove; 5. Filling soil; 11. Vertical plate; 12. Horizontal plate; 13. Tenon; ; 15. Exposed steel bars; 16. Drain holes.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.

The present invention provides a panel module unit for reinforced soil retaining walls. The panel module unit 1 includes a vertical plate 11, a horizontal plate 12 and a tenon 13 of a reinforced concrete structure integrally formed. The horizontal plate 12 is vertical Set on one side of the vertical plate 11, the tenon 13 is directly connected to the bottom edge of the vertical plate 11 and protrudes from the downward extending surface of the vertical plate 11;

Drainage holes 16 are also arranged on the vertical plate 11 . A drainage hole 16 with a certain diameter is provided to facilitate drainage of the slope and reduce the impact of accumulated water on the stability of the reinforced earth retaining wall. Preferably, the drainage hole 16 is located at the lower half of the vertical plate 11 .

The horizontal plate 12 is provided with a reserved hole 14 for downwardly inserting the tenon 13 of the upper adjacent panel module unit 1 .

The vertical plate 11 is also provided with exposed steel bars 15 , the exposed steel bars 15 form a plane parallel to the horizontal plate 12 , and the exposed steel bars 15 are located below the horizontal plate 12 . The exposed steel bar 15 and the surface of the riser 11 jointly enclose a rectangular space. The exposed steel bar 15 can be used as a connector between the geotechnical reinforcement material 2 and the panel module unit 1 on the one hand; on the other hand, it can be used as a hoisting connector for the panel module unit 1 during the construction of the reinforced earth retaining wall.

The distance between the top of the plane where the exposed steel bar 15 is located and the bottom surface of the horizontal plate 12 is 1/2 of the height of the vertical plate 11 .

Two tenons 13 are symmetrically arranged on each panel module unit 1 , and two reserved holes 14 are correspondingly arranged on the horizontal plate 12 .

In the thickness direction of the vertical plate 11, the width of the horizontal plate 12 is D, and the horizontal distance d between the center position of the reserved hole 14 and the surface of the vertical plate 11 is 10% of the width D of the horizontal plate 12. 1/2.

The junction of the horizontal plate 12 and the vertical plate 11 is located at the upper half of the vertical plate 11 .

The present invention also provides a reinforced soil retaining wall. The reinforced soil retaining wall includes a plurality of panel module units 1 arranged in dislocation up and down. The panel module unit 1 includes vertical plates 11 of reinforced concrete structure integrally formed, The horizontal plate 12 and the tenon 13, the horizontal plate 12 is vertically arranged on one side of the vertical plate 11, the tenon 13 is directly connected to the bottom edge of the vertical plate 11 and its protrusion is arranged downward on the vertical plate 11 On the extension surface of the board surface; the horizontal board 12 is provided with a reserved hole 14 for the tenon 13 of the upper adjacent panel module unit 1 to be inserted downward, and the vertical board 11 is also provided with exposed steel bars 15, so The exposed steel bars 15 form a plane parallel to the horizontal plate 12, and the exposed steel bars 15 are located below the horizontal plate 12; The dislocation arrangement of the panel module unit 1 is that the two tenons 13 of the upper panel module unit 1 are respectively inserted into the reserved holes 14 of the two adjacent panel module units 1 below.

The specific dislocation connection structure is: one of the two tenons 13 of the upper panel module unit A is inserted into the reserved hole 14 of the lower panel module unit B, and the panel module unit A has another The tenon 13 is inserted into the reserved hole 14 of the lower panel module unit C, and the panel module unit B and the panel module unit C are two left and right adjacent panel module units 1 .

The left and right adjacent panel module units 1 can be interlocked together by dislocation assembly between the upper and lower panel module units 1, so as to avoid forming vertical cracks penetrating from top to bottom, which greatly improves the integrity of the wall.

After dislocation assembly of the panel module units 1, grooves for greening are formed between the two vertical plates 11 of the upper and lower adjacent panel module units 1 and the horizontal plates 12 of the lower panel module units. However, the entire reinforced earth retaining wall surface will appear as a ladder shape. From a mechanical point of view, the setback treatment of the reinforced earth retaining wall surface wall is similar to a certain inclination angle of the wall back, which can reduce the impact on the surface wall to a certain extent. Horizontal earth pressure on the back of the wall.

Filling the groove 4 with soil can plant vegetation and green the reinforced earth retaining wall, which has the functions of beautifying the surrounding environment and improving the ecology of the slope.

The reinforced earth retaining wall is provided with a panel foundation 3 under the bottom panel module unit to ensure the stability of the entire reinforced earth retaining wall panel.

The vertical plate 11 of the panel module unit 1 is also provided with a through-hole-shaped drainage hole 16 passing through the plate surface; the distance between the top of the plane formed by the exposed steel bar 15 and the bottom surface of the horizontal plate 12 is the 1/2 of the height of the vertical board 11; in the thickness direction of the vertical board 11, the width of the horizontal board 12 is D, and the center position of the reserved hole 14 is at the level between the board surfaces of the vertical board 11 The distance d is 1/2 of the width D of the horizontal plate 12;

Geotechnical reinforcement refers to geosynthetics used in geotechnical engineering to increase the stability of rock and soil or improve the bearing capacity. Commonly used geotechnical reinforcement materials include geogrid, woven geotextile and reinforced tape. The geotechnical reinforcement material 2 in this embodiment is a geogrid, one end of the geogrid is connected to the panel module unit 1 through the exposed steel bar 15, and the geogrid of the reinforced part is embedded in the retaining wall panel in the subsequent fill.

The reinforced soil retaining wall includes the following specific construction steps:

Step 1. Clean up and level the site, and carry out the construction of the panel foundation.

Step 2. Prepare the prefabricated part of the panel module unit 1 of the reinforced concrete structure. The panel module unit 1 includes a vertical plate 11, a horizontal plate 12 and a tenon 13 of a reinforced concrete structure integrally formed. The horizontal plate 12 is vertically arranged on the vertical On one side of the board surface of the board 11, the tenon 13 is directly connected to the bottom edge of the vertical board 11 and its protrusion is arranged on the downward board extension surface of the vertical board 11; The tenon 13 of the adjacent panel module unit 1 is inserted downward into the reserved hole 14, and the vertical plate 11 is also provided with exposed steel bars 15, and the exposed steel bars 15 form a plane parallel to the horizontal plate 12. And the exposed steel bar 15 is located under the horizontal plate 12;

Step 3. Use a crane to hoist and splice the panel module unit 1. The hoisting and splicing of the panel module unit 1 is carried out in layers; When the filling surface is flush with the exposed steel bar 15 behind the first layer panel module unit 1, the first layer of geotechnical reinforcement material 2 is laid, and the first layer of geotechnical reinforcement material 2 is fixed on the exposed steel bar 15 to realize The connection between the geotechnical reinforcement material 2 and the panel module unit 1;

Step 4. Carry out hoisting and splicing of the panel module unit 1 on the second floor; In the reserved hole 14 on the horizontal plate 12 of the panel module unit 1; that is, at least one of the tenons 13 of the panel module unit 1 on the second layer is embedded in the left side of the two adjacent panel module units 1 on the left and right of the first layer In the reserved hole 14 of the panel module unit 1 of the second floor, at least another tenon 13 of the panel module unit 1 of the second layer is embedded in the right panel module of the two adjacent left and right panel module units 1 of the first layer In the reserved hole 14 of unit 1;

Step 5, carry out the filling and compaction of the filling soil 5 behind the second layer of wall, when the filling soil surface is flush with the exposed steel bar 15 behind the second layer panel module unit 1, lay the second layer of geotechnical reinforcement material 2, and place The second layer of geotechnical reinforcement material 2 is fixed on the exposed steel bar 15 on the second layer panel module unit 1;

Step 6. Repeat steps 4 and 5 until the design elevation of the reinforced soil retaining wall is reached.

It should be noted that when splicing the panel module unit 1, the tenon 13 and the reserved hole 14 of the upper and lower panel module unit 1 must be misplaced and tightly connected to ensure the integrity and stability of the reinforced earth retaining wall.

Due to the dislocation splicing panel module unit 1, the panel module units 1 on the left and right sides of the overall reinforced earth retaining wall are staggered up and down. When the vertical side of the overall reinforced earth retaining wall is required to be a straight line, part of the half panel is used. Modular unit 1 is supplemented.

The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deductions and substitutions can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

1. a kind of panel module unit for reinforced earth bulkhead, which is characterized in that the panel module unit (1) includes one Riser (11), transverse slat (12) and the tenon (13) of molding reinforced concrete structure, the transverse slat (12) are vertically set on riser (11) one side of the board, the tenon (13) directly connect with the bottom edge of riser (11) and its protrusion setting is downward in riser (11) Plate face extended surface on；It is additionally provided with drainage hole (16) on the riser (11), is provided on the transverse slat (12) for upper layer The reserving hole (14) that the tenon (13) of adjacent panels modular unit (1) is downwardly into.

2. panel module unit according to claim 1, which is characterized in that be additionally provided with exposed steel on the riser (11) Muscle (15), one plane parallel with the transverse slat (12) of exposed steel bar (15) self-forming, and exposed steel bar (15) is located at Below transverse slat (12).

3. panel module unit according to claim 2, which is characterized in that the exposed steel bar (15) and the riser (11) plate face surrounds rectangular space jointly.

4. panel module unit according to claim 2, which is characterized in that the planar top where the exposed steel bar (15) The distance between bottom surface of portion and the transverse slat (12) is the 1/5~4/5 of the riser (11) height.

5. panel module unit according to claim 1, which is characterized in that every piece of panel module unit (1) on pair Claiming setting, there are two tenon (13), and accordingly there are two reserving hole (14) for setting on the transverse slat (12).

6. panel module unit according to claim 1, which is characterized in that described on the thickness direction of riser (11) The width of transverse slat (12) is D, between plate face of the center from the riser (11) of the reserving hole (14) it is horizontal away from From 1/4~3/4 that d is transverse slat (12) width D.

7. panel module unit according to claim 1, which is characterized in that the junction of transverse slat (12) and riser (11) position In the upper half of riser (11), the drainage hole (16) is located at the lower half of riser (11).

8. a kind of reinforced earth bulkhead, which is characterized in that the reinforced earth bulkhead includes the muti-piece panel module shifted to install up and down Unit (1), the panel module unit (1) include the riser (11) of integrally formed reinforced concrete structure, transverse slat (12) and Tenon (13), the transverse slat (12) are vertically set on the one side of the board of riser (11), the tenon (13) directly with riser (11) Bottom edge connection and its protrusion be arranged on the downward plate face extended surface of riser (11)；Be provided on the transverse slat (12) for The reserving hole (14) that is downwardly into of tenon (13) of layer adjacent panels modular unit (1) is additionally provided on the riser (11) Exposed steel bar (15), one plane parallel with the transverse slat (12) of exposed steel bar (15) self-forming, and exposed steel bar (15) it is located at below transverse slat (12)；The reinforced earth bulkhead further includes the Earthworking reinforced bar material being fixedly connected with exposed steel bar (15) (2), shifting to install for the panel module unit (1) is by more than two tenons (13) of the panel module unit (1) of top Respectively in the reserving hole (14) of two adjacent panel module units (1) of insertion lower section.

9. reinforced earth bulkhead according to claim 8, which is characterized in that the reinforced earth bulkhead is in bottom panel module It is basic (3) that panel is provided with below unit (1)；Two pieces of risers (11) of the upper layer and lower layer adjacent panels modular unit (1) with And the groove (4) for being used for planting technique is formed between the transverse slat (12) of lower layer's panel module unit (1).

10. reinforced earth bulkhead according to claim 8, which is characterized in that the riser (11) of the panel module unit (1) On be additionally provided with through hole shape drainage hole (16) across plate face；The planar top and the transverse slat that the exposed steel bar (15) is formed (12) the distance between bottom surface is the 1/5~4/5 of the riser (11) height；It is described on the thickness direction of riser (11) The width of transverse slat (12) is D, between plate face of the center from the riser (11) of the reserving hole (14) it is horizontal away from From 1/4~3/4 that d is transverse slat (12) width D；The junction of transverse slat (12) and riser (11) is located at the upper half of riser (11).