CN110295621B - Retaining wall structure for slope protection and its construction method - Google Patents

Abstract

The invention relates to a retaining wall structure for slope protection and a construction method thereof. The flexible wall panel includes a sheet that can be rolled or folded, and one side of the sheet is provided with a moving contact component at the top and a static contact component at the bottom. Above the collapsible baffle made of sulphur cement, the static contact component is provided with a starting power source in the form of a super capacitor and a socket for the elastic tenon to be inserted. The electrode interface of the starting power source can be connected to the collapsible baffle of another flexible wallboard. The pre-embedded heating wire is conductively connected, and the electrode interface of the startup power supply is also bonded with a tearable insulating film. Once in use, there is no need to manually install a column-like support between the two layers of flexible wall panels, and the connection between the flexible wall panels can be achieved by relying on the tenon-and-mortise fit between the elastic tenon and the mortise hole after the collapse of the collapsible baffle. The steps of manually installing the column-like supports are omitted, the work efficiency is improved, and the labor intensity of the workers is reduced.

Description

Retaining wall structure for slope protection and construction method thereof

technical field

The invention belongs to the field of side slope protection, and in particular relates to a retaining wall structure for side slope protection and a construction method thereof.

Background technique

Retaining wall refers to a structure that supports the subgrade fill or hillside soil and prevents the fill or soil from being deformed and unstable. In the cross section of the retaining wall, the part that is in direct contact with the supported soil is called the back of the wall; the part opposite to the back of the wall and in the air is called the wall; the part that is in direct contact with the foundation is called the foundation; The top surface of the wall is called the wall top; the front end of the foundation is called the wall toe; the rear end of the foundation is called the wall heel. Common retaining walls are gravity type, bolt type, cantilever type, buttress type, empty box type and sheet pile type. These types of retaining walls will encounter the problems of complicated construction procedures, poor durability and firmness of retaining walls, and poor greening effect during the construction process.

The prior patent CN2013107239339 discloses a tie-rod flexible retaining wall that is easy to assemble, including a tension joint, a supporting column, a working surface, and a flexible retaining wall assembly. The flexible retaining wall assembly includes a retaining wall body, a retaining wall The main body of the wall is a flexible strip of indeterminate length, and along the length direction of the flexible retaining wall assembly, there are incisions penetrating the thickness direction of the main body of the retaining wall at intervals on the upper and lower sides of the main body of the retaining wall. The main body of the wall is dislocated to form a column installation opening; the supporting column is inserted into the supporting column installation opening in the same vertical direction, and one end of the pulling piece is connected to the supporting column, and the other end is fixedly connected to the surface of the working surface. The construction process is simple, the durability and firmness are excellent, the greening is convenient, the construction process of the retaining wall is greatly simplified, and the utility model has wide practicability and excellent economic value.

However, during the construction process, the installation of the support column still needs to be realized by manual operation, which not only increases the labor intensity of workers, but also has low work efficiency. Therefore, the existing construction technology has the problem of time-consuming and laborious construction process.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a kind of retaining wall structure for slope protection that is easy to install, and its technical scheme is as follows:

Retaining wall structure for side slope protection, including flexible wall panels connected to the working face, the flexible wall panels include sheets that can be rolled or folded, and the side of the sheet facing the working face is provided with a moving contact component at the top and a bottom at the bottom The static contact component, the dynamic contact component is provided with an elastic tenon that can elastically protrude upward and a collapsible baffle made of sulfur cement material that blocks above the elastic tenon, and the static contact component is provided with a supercapacitor in the form of starting power and elastic supply. The mortise hole into which the tenon is inserted, the electrode interface of the start-up power supply can be conductively connected to the pre-embedded heating wire in the collapsible baffle of another flexible wallboard, and the electrode interface of the start-up power supply is also bonded with a tearable insulating film.

Further, the outer periphery of the movable contact assembly is provided with a conductive cylinder that can be conductively connected to the electrode interface of the starting power source, and the conductive cylinder and the collapsible baffle are conductively connected through leads embedded in the movable contact assembly.

Further, a blind accommodating hole that is coaxial with the conductive cylinder and can be fully submerged by the elastic tenon is provided on the movable contact assembly, the upper end of the accommodating blind hole is opened, and the collapsible baffle is fixedly blocked in the upper end opening of the accommodating blind hole. .

Further, the elastic tenon includes a hollow tenon rod that can telescopically slide in the accommodating blind hole, and a spring that pushes the hollow tenon rod upward is installed against the lower end of the hollow tenon rod and the blind end of the accommodating blind hole.

Further, the hollow tenon rod is formed by butt joint of the conductor section located in the upper section and the insulating section located in the lower section, the top of the conductor section is a tip, and a flow-through hole communicating with the inner cavity is opened, and the insulation section is movably installed with liquid A conductive float that rises and floats upward, and the lead wire connected to the lower end of the conductive float penetrates the insulating section, and is conductively connected to the power supply located in the blind end of the blind hole through the spring; the hole is provided with a diaphragm for the tip to penetrate and a perfusion chamber filled with perfusion fluid above the diaphragm.

Further, the perfusion liquid is magnetorheological fluid or electrorheological fluid; a working coil surrounding the elastic tenon is pre-embedded in the hole wall of the accommodating blind hole, and the working coil is conductively connected with the power source.

Further, a spline groove located at a position close to the blind end is opened on the hole wall for accommodating the blind hole, and the outer circumference of the insulating segment is protruded with a sliding arrangement in the spline groove and prevents the elastic tenon from continuing when the tip pierces the pouring cavity. The limit stop made of sulphur cement material upward is electrically connected to the power supply, and the power supply is turned on when the conductive float floats up to the conductive connection position with the conductor section.

Further, both the moving contact assembly and the static contact assembly can be detachably connected to the side surface of the plate.

Another object of the present invention is to provide a kind of construction method that is specially used for above-mentioned slope protection retaining wall structure, and its technical scheme is as follows:

The construction method of the retaining wall for slope protection includes the following steps:

Step 1, tear off the insulating film of the flexible wall panel of the retaining wall structure for slope protection. The flexible wall panel includes a sheet that can be rolled or folded. The static contact component, the dynamic contact component is provided with an elastic tenon that can elastically protrude upward and a collapsible baffle made of sulfur cement material that blocks above the elastic tenon, and the static contact component is provided with a supercapacitor in the form of starting power and elastic supply. The mortise hole into which the tenon is inserted, the electrode interface of the start-up power supply can be conductively connected with the pre-embedded heating wire in the collapsible baffle of another flexible wallboard, and the electrode interface of the start-up power supply is also bonded with a tearable insulating film;

In step 2, each layer of flexible wall panels is stacked and installed in sequence from bottom to top, and the static contact components of the upper flexible wall panel are aligned with the dynamic contact components of the lower flexible wall panel;

Step 3: Use the connecting rod to connect the static contact component or the moving contact component to the work surface.

Further, the electrodes of the start-up power supply and the power supply are provided with insulating spacers that can be pulled out. In step 1, the insulating spacers must be pulled out.

The beneficial effects of the present invention are as follows:

The elastic tenon and the electrode interface are shielded by the collapsible baffle and the insulating film respectively, so as to ensure that the dynamic and static contact components will not be triggered before use; once it is used, there is no need to manually install uprights between the two layers of flexible wall panels. The support can rely on the mortise and tenon joint between the elastic tenon and the mortise hole after the collapse of the collapsible plate to realize the connection between the flexible wall panels, which also saves the steps of manually installing the column support and improves the work efficiency. Reduce the labor intensity of workers.

Description of drawings

Fig. 1 is the structural representation of the flexible wall panel of the retaining wall structure for slope protection of the present invention;

FIG. 2 is a schematic structural diagram of the moving contact assembly in FIG. 1 when it is not extended;

FIG. 3 is a schematic structural diagram of the moving contact assembly in FIG. 1 in a semi-extended state (rotated by 90° compared to FIG. 2 );

FIG. 4 is a schematic structural diagram of the static contact assembly in FIG. 1 .

Detailed ways

In this embodiment, the retaining wall structure for slope protection is mainly composed of a working surface, a tension member and a flexible wall panel, which eliminates the need for supporting columns in the traditional retaining wall structure for slope protection, and relies on flexible wall panels. The related structures are replaced to achieve the purpose of saving time and effort.

Referring to FIG. 1 , the flexible wall panel of the retaining wall structure for slope protection in the present invention is shown. The flexible wall panel is mainly composed of a coilable or foldable plate 1, a movable contact component 2 that can be detachably installed at the top, and a static contact component 3 that can be detachably installed at the bottom. The detachable installation method can choose bolt connection, pin connection, etc. , and both the moving contact component 2 and the static contact component 3 are located on the side of the plate 1 facing the working surface.

Referring to FIGS. 2 and 3 , the moving contact assembly 2 includes a moving contact body 21 detachably connected to the plate 1 , and the moving contact body 21 is provided with an elastic tenon 22 that can elastically protrude upward and a sulphur cement blocked above the elastic tenon 22 Material collapsible baffle 23. The outer periphery of the movable contact body 21 is provided with a conductive cylinder 24 that can be conductively connected to the electrode interface of the starting power source. The movable contact body 21 is provided with an accommodating blind hole 25 which is coaxial with the conductive cylinder 24 and can be completely submerged by the elastic tenon 22. The upper end of the accommodating blind hole 25 is open, and the collapsible plate 23 is fixed and blocked in the accommodating blind hole 25. in the upper opening. The elastic tenon 22 includes a hollow tenon rod 26 that can telescopically slide in the accommodating blind hole 25 . The lower end of the hollow tenon rod 26 and the blind end of the accommodating blind hole 25 are abutted against a spring 27 that pushes the hollow tenon rod 26 upward. The hollow tenon rod 26 is formed by butting the conductor section located in the upper section and the insulating section located in the lower section. The top of the conductor section is a tip, and a flow-through hole communicated with the inner cavity is opened. The conductive float 28 that floats upwards, the lead conductively connected to the lower end of the conductive float 28 penetrates the insulating section, and is conductively connected to the power source 29 located in the blind end of the accommodating blind hole 25 via the spring 27 . A working coil 20 surrounding the elastic tenon 22 is pre-embedded in the hole wall of the accommodating blind hole 25 , and the working coil 20 is electrically connected to the power source 29 . The hole wall of the blind hole 25 is provided with a spline groove located near the blind end, and the outer circumference of the insulating section is protruded with a sliding arrangement in the spline groove and prevents the elastic tenon 22 from continuing upward when the tip pierces the filling cavity. The limit block 210 made of sulfur cement is conductively connected to the power source 29, and the power source 29 is turned on when the conductive float 28 floats up to the conductive connection position with the conductor segment.

Referring to FIG. 4 , the static contact assembly 3 includes a static contact body 31 that is detachably connected to the plate 1. The static contact body 31 is provided with a starting power source 34 in the form of a super capacitor and a socket 32 for insulating the lower section of the hole wall into which the elastic tenon 22 is inserted. , the electrode interface of the starting power supply 34 can be conductively connected with the pre-embedded heating wire in the collapsible baffle plate 23 of another flexible wallboard, and the electrode interface of the starting power supply 34 is also bonded with a tearable insulating film. The 90-hole 32 is provided with a diaphragm through which the tip can penetrate, and a perfusion cavity 33 located above the diaphragm and filled with perfusion liquid. The perfusion liquid is a magnetorheological fluid or an electrorheological fluid. Preferably, the perfusion liquid adopts a magnetorheological fluid with the following components, and the magnetorheological fluid adopts a magnetorheological fluid with hollow cobalt particles and a dispersed phase. The volume percentages of the components are as follows: 8% hollow cobalt particles, 92% dimethyl silicone oil with a room temperature viscosity of 500 mPa·S. The two are mixed and thoroughly stirred and ground to prepare a magnetorheological fluid. Among them, the preparation scheme of hollow cobalt particles is as follows: preparation of cobalt chloride (CoCl2·6H2O) concentration of 0.1mol/L, hydrazine hydrate (N2H4·H2O) concentration of -4 degrees 6mol/L, polyoxyethylene lauryl ether (Brij30) concentration of 5.15 ×10mol/L precursor solution, magnetically stirred for 1 hour, then transferred to the reaction kettle, kept at 180°C for 24 hours, washed with absolute ethanol, and collected by drying. The zero-field viscosity of the obtained magnetorheological fluid is 5.2Pa·S, the shear stress reaches 21kPa under the magnetic field strength of 250kA/m, and the sedimentation rate after standing for 3 months is 26%, while the same volume fraction of carbonyl iron powder The sedimentation rate of magnetorheological fluid reaches 49%. The components of the magnetorheological fluid can also be: 12% of hollow cobalt particles, and 88% of dimethyl silicone oil with a room temperature viscosity of 500 mPa·S. The two are mixed and thoroughly stirred and ground to prepare a magnetorheological fluid. Among them, the preparation scheme of hollow cobalt particles is as follows: the concentration of cobalt chloride (CoCl2·6H2O) is 0.2mol/L, the concentration of hydrazine hydrate (N2H4·H2O)-3 is 8mol/L, and the concentration of polyoxyethylene lauryl ether (Brij30) is 1.03× 10 mol/L precursor solution, magnetically stirred for 1 hour, transferred to the reaction kettle, kept at 180° C. for 24 hours, washed with absolute ethanol, and collected by drying. The zero-field viscosity of the obtained magnetorheological fluid is 10Pa·S, and the shear stress reaches 56kPa under a magnetic field strength of 250kA/m. The variation curve of shear stress with magnetic field strength is shown in FIG. 4 . The sedimentation rate after standing for 3 months is 11%, while the sedimentation rate of the carbonyl iron powder magnetorheological fluid with the same volume fraction reaches 35%.

Preferably, the electrodes of the starting power source 34 and the power source 29 are provided with insulating spacers that can be pulled out.

When in use, first remove the insulating film and insulating spacer on the flexible wallboard to ensure that the starting power supply 34 and the power supply 29 are connected to the corresponding open circuit; Align the static contact component 3 of the upper flexible wallboard with the moving contact component 2 of the lower flexible wallboard; finally, connect the static contact component 3 or the moving contact component 2 to the work surface with a connecting rod.

Claims (8)

1. The retaining wall structure for slope protection includes a flexible wall panel connected to the working surface, and it is characterized in that the flexible wall panel includes a plate that can be rolled or folded, and the side of the plate facing the working surface is provided with a A movable contact component and a static contact component located at the bottom. The movable contact component is provided with an elastic tenon that can elastically extend upwards and a collapsible baffle made of sulfur cement material that blocks the elastic tenon. The static contact component is provided with a super capacitor form The start-up power supply and the mortise hole for the elastic tenon to be inserted, the electrode interface of the start-up power supply can be conductively connected with the pre-embedded heating wire in the collapsible baffle of another flexible wallboard, and the electrode interface of the start-up power supply is also glued with a tearable insulating film. 2 . The retaining wall structure for side slope protection according to claim 1 , wherein the outer periphery of the moving contact assembly is provided with a conductive cylinder that can be electrically connected to the electrode interface of the starting power source, and the conductive cylinder and the collapsible baffle pass through. 3 . The lead wires embedded in the moving contact assembly are conductively connected. 3 . The retaining wall structure for side slope protection according to claim 2 , wherein the movable contact component is provided with a blind hole coaxially arranged with the conductive cylinder and can be completely submerged by the elastic tenon, and the upper end of the blind hole is accommodating. 4 . an opening, the collapsible baffle is fixedly blocked in the upper end opening of the accommodating blind hole. 4 . The retaining wall structure for side slope protection according to claim 3 , wherein the elastic tenon comprises a hollow tenon rod that can telescopically slide in the accommodating blind hole, the lower end of the hollow tenon rod and the blind end accommodating the blind hole. 5 . A spring that pushes the hollow tenon rod upward is installed against the top. 5 . The retaining wall structure for slope protection according to claim 4 , wherein the hollow tenon rod is formed by butting the conductor section located in the upper section and the insulating section located in the lower section, and the top of the conductor section is a pointed end and is opened. 6 . There is a flow hole that communicates with the inner cavity, and a conductive float that can float upward with the rise of the liquid level is movably installed in the insulating section. The lead conductively connected to the lower end of the conductive float penetrates the insulating section and is connected to the blind end of the blind hole through the spring conductive connection. internal power supply; The 90 hole is provided with a septum for the tip to penetrate and a perfusion cavity above the septum and filled with perfusion liquid. 6 . The retaining wall structure for slope protection according to claim 5 , wherein the filling liquid is a magnetorheological fluid or an electrorheological fluid; a working coil surrounding the elastic tenon is pre-buried in the hole wall of the accommodating blind hole. 7 . , the working coil is conductively connected with the power supply. 7 . The retaining wall structure for side slope protection according to claim 5 , wherein the hole wall for accommodating the blind hole is provided with a spline groove located at a position close to the blind end, and the outer periphery of the insulating section is protruded with sliding A limit stop made of sulphur cement, which is arranged in the spline groove and prevents the elastic tenon from continuing upward when the tip pierces the perfusion cavity. The limit stop is conductively connected to the power supply and floats on the conductive float to conduct electricity with the conductor segment. Turn on the power supply when it is in the connected position. 8. The retaining wall structure for slope protection according to any one of claims 1 to 7, characterized in that both the movable contact assembly and the static contact assembly can be detachably connected to the side surface of the plate.

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