CN112240032A

CN112240032A - Combined panel of wrapped reinforced earth retaining wall

Info

Publication number: CN112240032A
Application number: CN202011285655.XA
Authority: CN
Inventors: 叶晓明; 陈柏林; 朱春笋
Original assignee: Chongqing Yongu Architecture Technology Development Co ltd
Current assignee: Chongqing Yongu Architecture Technology Development Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-01-19

Abstract

The invention provides a combined panel of a wrapped reinforced earth retaining wall, which is formed by combining an upper panel, a lower panel and a middle panel, wherein the panels are connected through grooves and raised lines in a mortar-masonry manner, and geogrids bypass the middle panel to form a wrapped shape. The invention avoids the dependence on factors such as the mortar quality, the upper part weight, the friction between the geogrid and the panel and the like in the traditional connection of the panel and the geogrid, greatly improves the reliability of the connection of the panel and the geogrid, and simultaneously has the capability of preventing the geogrid from being corroded by ultraviolet rays and being physically damaged. The panel has the advantages of reasonable stress, attractive appearance, convenience in construction, stable performance, high reliability and the like, and has good application market prospect.

Description

Combined panel of wrapped reinforced earth retaining wall

Technical Field

The invention relates to a reinforced earth retaining wall, in particular to a combined panel of a wrapped reinforced earth retaining wall.

Background

A prefabricated panel reinforced earth retaining wall is a mainstream structural form in the reinforced earth retaining wall. The traditional panel structure adopts a method of grouting geogrid between panels to connect the panels and the geogrid, and the panel structure is influenced by factors such as grouting quality, upper panel weight, panel surface friction and the like, so that the effective connection between the panels and the geogrid is difficult to ensure. In recent years, with the application of a large number of reinforced retaining walls, the panel often falls off to cause engineering failure, and the panel becomes a common phenomenon of engineering accidents of the reinforced retaining wall. Therefore, constructing a panel structure that ensures effective connection of the panels to the geogrid has become a key technical problem of the reinforced earth retaining wall structure system.

Disclosure of Invention

The invention aims to provide a combined panel of a wrapped reinforced earth retaining wall, which aims to solve the technical problem of failure of engineering caused by easy falling of the panel in the prior art.

The invention adopts the following technical scheme to solve the problems, and the specific scheme is as follows.

A panel structure-a wrapped reinforced earth retaining wall combined panel which ensures the effective connection of the panel and the geogrid is adopted. The combined panel of the wrapped reinforced earth retaining wall comprises an upper panel, a lower panel and a middle panel which are connected in an embedded manner; the geogrid is wrapped around the middle panel to form a wrapped shape.

Preferably, the method comprises the following steps: the section of the upper panel is approximately inverted L-shaped, the top of the transverse limb of the upper panel is provided with a convex strip, and the lower part of the transverse limb of the upper panel is provided with a concave groove.

Preferably, the method comprises the following steps: the cross section of the lower panel is approximately L-shaped, and the upper part and the lower part of the transverse limb of the lower panel are both provided with concave grooves.

Preferably, the method comprises the following steps: the cross section of the middle panel is approximately in a transverse T shape, the upper part and the lower part of each longitudinal limb are provided with convex strips, the convex strips are provided with reinforced belt grooves according to the space of the geogrid, and the reinforced belts are strips forming the geogrid.

Preferably, the method comprises the following steps: the convex strips and the concave grooves which are contacted among the panels are in one-to-one correspondence in structural shape and size and are embedded with each other; gaps which are not less than the requirements of the thickness of the geogrid and the mortar thickness are reserved at the contact positions among the panels and are fixedly embedded and connected through the mortar of the convex strips and the concave grooves.

Further: geogrid is walked around middle panel through adding the muscle trough of belt, adds muscle trough of belt bottom and is arc distribution on middle panel, perhaps: the reinforced belt grooves are distributed along the middle panel in an arc shape, and the geogrid bypasses the middle panel along the reinforced belt grooves.

Further: the upper panel, the lower panel and the middle panel form a unit structure; when the inclined panel structure is implemented, the positions of the convex strips and the concave grooves on the lower panel and the upper panel among the unit structures are adjusted according to specific engineering requirements to form required panel back distances, and the lower panel of the upper-level unit structure is mutually embedded with the upper panel of the lower-level unit structure.

As another scheme: and non-embedded masonry is carried out between the upper and lower wrapping type reinforced earth retaining wall combined panel unit structures, and at the moment, the convex strips on the upper panel and the concave grooves at the lower part of the lower panel are omitted.

Advantageous effects

The geogrid is connected with the middle panel in a wrapping mode, so that the dependence of the traditional panel on factors such as the mortar quality, the upper part weight, the friction between the geogrid and the panel and the like is reduced or even eliminated, the connection reliability is greatly improved, and the failure of engineering caused by the falling of the panel is avoided; the geogrid is connected with the arc-shaped wrapping of the middle panel, so that the construction difficulty and the unreasonable stress state of large-angle turning of the geogrid of the traditional panel are avoided.

The continuous state that the joint of the geogrid and the panel does not slide or fall off is ensured, the geogrid is ensured to have small deformation and reliable force transmission at the panel, and the geogrid has great significance for slope stabilization and deformation control; the upper panel and the lower panel provide guarantee for the geogrid to prevent ultraviolet corrosion, physical damage and protection of the middle panel, and meanwhile, the appearance of the retaining wall is improved.

In addition, the invention can also be used for the implementation of the variable-slope-angle panel.

Drawings

FIG. 1 is a schematic front elevation view of a composite panel of a wrapped reinforced retaining wall in an embodiment;

FIG. 2 is a cross-sectional view taken at 1-1 in FIG. 1;

FIGS. 3, 4, 5 are schematic views of an upper panel, a middle panel, and a lower panel in this order in an embodiment;

in the figure: 1-upper panel; 2-lower panel; 3-middle panel; 4-geogrid; 5, forming a reinforcement belt groove; 6-convex strip; 7-a concave groove; 8, filling soil behind the panel; delta-panel separation.

Examples

The technical solutions are further described below with reference to the drawings and the specific embodiments, but the following embodiments are only used to help understanding the principle of the present invention and the core idea thereof, and do not limit the scope of the present invention. It should be noted that modifications to the invention as described herein, which do not depart from the principles of the invention, are intended to be within the scope of the claims which follow.

The method for constructing the reinforced earth retaining wall by adopting the wrapped combined panels shown in the figures 1 to 5 comprises the following steps:

step 1, determining the height of a convex strip on a middle panel 3 and the distance and width of a reinforced band 5 according to an adopted geogrid, adjusting the positions of a convex strip 6 and a concave groove 7 on the upper parts of an upper panel 1 and a lower panel 2 according to a slope design inclination angle, determining the distance delta between the panels, and prefabricating each combined panel for later use;

step 2, performing foundation construction of a retaining wall foundation, fixing the lower panel 2 on the retaining wall foundation, rolling and filling the filling soil 8 behind the panel to the height of the inner step of the lower panel 2, laying the geogrid 4, simultaneously plastering cement mortar on the wall of the groove 7 of the lower panel 2, placing the middle panel 3, and extending the geogrid 4 between the lower panel 2 and the middle panel 3 through the reinforcement belt groove 5 on the middle panel 3 without cutting off and rolling for later use;

step 3, rolling and filling the filling 8 behind the panel to the step height of the middle panel 3, laying the rolled geogrid 4 for standby use inwards, laying the geogrid 4 on the rolled soil body through a reinforcement belt groove 5 on the middle panel 3, and laying the upper panel 1 and the lower panel 2 upwards by using cement mortar;

and 4, rolling and filling soil to the height of the inner step of the lower panel 2, and then repeating the step 2 and the step 3 until the construction of the retaining wall is finished.

Claims

1. The utility model provides a parcel type reinforced earth retaining wall combination panel which characterized in that: it comprises an upper panel (1), a lower panel (2) and a middle panel (3) which are connected in an embedded manner; the geogrid (4) bypasses the middle panel (3) to form a wrapping shape.

2. The combined panel of the wrapped reinforced earth retaining wall according to claim 1, wherein: the section of the upper panel (1) is approximately inverted L-shaped, the top of the transverse limb of the upper panel (1) is provided with a convex strip (6), and the lower part is provided with a concave groove (7).

3. The combined panel of the wrapped reinforced earth retaining wall according to claim 2, wherein: the cross section of the lower panel (2) is approximately L-shaped, and the upper part and the lower part of the transverse limb of the lower panel (2) are provided with concave grooves (7).

4. The combined panel of the wrapped reinforced earth retaining wall according to claim 3, wherein: the section of the middle panel (3) is approximately in a transverse T shape, the upper part and the lower part of the longitudinal limb are used as convex strips (6), and reinforced belt grooves (5) are arranged on the convex strips (6) of the middle panel (3) according to the space of the geogrid.

5. The combined panel of the wrapped reinforced retaining wall according to claims 1, 2, 3 and 4, wherein: all the convex strips (6) and the concave grooves (7) are in one-to-one correspondence in structural shape and size and are embedded into each other; gaps which are not less than the requirements of the thickness of the geogrid (4) and the mortar thickness are reserved at the contact parts among the panels, and the panels are fixedly embedded and connected with the concave grooves (7) through the convex strips (6).

6. The combined panel of the wrapped reinforced retaining wall according to claim 5, wherein: the reinforced belt grooves (5) are distributed along the middle panel (3) in an arc shape, and the geogrid (4) bypasses the middle panel (3) along the reinforced belt grooves (5).

7. The combined panel of the wrapped reinforced earth retaining wall according to claim 6, wherein: the upper panel (1), the lower panel (2) and the middle panel (3) form a unit structure.

8. The combined panel of the wrapped reinforced retaining wall according to claim 7, wherein: when the combined panel of the wrapped reinforced earth retaining wall is used for a slope, the panel outer wall of the adjacent unit structure is provided with a panel back distance, and the positions of the corresponding upper convex strip (6) on the upper panel (1) and the corresponding lower concave groove (7) on the lower panel (2) are correspondingly adjusted.

9. The combined panel of the wrapped reinforced retaining wall according to claim 8, wherein: the lower panel (2) of the upper stage unit structure is embedded with the upper panel (1) of the lower stage unit structure.

10. The wrapped-type reinforced earth retaining wall composite panel according to any one of claims 1 to 9, wherein: and non-embedded masonry is performed between the upper and lower wrapping type reinforced earth retaining wall combined panel unit structures.