CN113737822B

CN113737822B - Assembled guard plate suitable for weathered rock area and construction method thereof

Info

Publication number: CN113737822B
Application number: CN202110967253.6A
Authority: CN
Inventors: 王一帆; 张志海; 鲍黎明; 赵海莲; 陈先平
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-12-16
Anticipated expiration: 2041-08-23
Also published as: CN113737822A

Abstract

The invention relates to the field of slope support construction, in particular to an assembled guard plate suitable for a weathered rock area and a construction method thereof. By using the assembled guard plate structure, the difficulties of loose rock soil and difficult excavation in the weathered rock area are well overcome, and the construction period of enclosure construction is greatly shortened; the guard plates are prefabricated into standard parts and are directly spliced after arriving at the site, and the construction period is further shortened by applying an assembly type construction concept, the standard guard plates are uniform in size, and are transversely and longitudinally arranged in order during assembly construction, so that the attractiveness of a containment area is improved; the guard plate material is waste garbage and a new water filtering material, so that underground water in inter-pile rocks can be filtered and drained while the environment is protected, the cost is saved, and inter-pile rock-soil rocks are blocked; through set up the gasket between connecting piece and handing-over board, to the destruction of handing-over board and provide effectual anchor when having reduced the connecting piece and having consolidated, make the holistic enclosure effect of backplate reliable and stable.

Description

Assembled guard plate suitable for weathered rock area and construction method thereof

Technical Field

The invention relates to the field of slope support construction, in particular to an assembled guard plate suitable for a weathered rock area and a construction method thereof.

Background

In traditional side slope support work progress, the shotcrete support is comparatively used extensively, sets up the reinforcing bar net piece in putting the sloping region, fixes through soil nail or stock, combines anchor and shotcrete for consolidate the foundation ditch side slope, on the fender pile perpendicular, is applicable equally, has obtained more and more applications in international foundation ditch engineering field.

However, when the traditional spray anchoring is carried out on the vertical surface of the support pile taking the weathered rock stratum as the main geology, soil nails and the like are not easy to anchor, the expansion bolts and the transverse reinforcing ribs are only suitable for fixing the reinforcing mesh, the construction procedures are multiple, the spraying difficulty is high, the requirement on excavation technology is high, the effect after spraying is poor, the use limitation is large, and the enclosure effect cannot be fully exerted under the geological conditions of the weathered rock area.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the assembled guard plate suitable for the weathered rock area and the construction method thereof can be used for performing assembled construction enclosure in the area with the weathered rock as the main geological condition, and has the advantages of stable and reliable enclosure effect, short construction period, low cost, attractiveness and practicability.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides an assembled backplate suitable for morals and manners district, sets up on the surface of the fender pile 21 of anchoring into the morals and manners stratum 20, contains I1 of backplate and II 2 of backplate of the crisscross overlap joint assembly of multiunit, its characterized in that: the protective plate I1 comprises a water filtering layer I3 arranged on the outer side and a water filtering layer I4 arranged on the inner side, the water filtering layer I4 is longitudinally flush with the water filtering layer I3 and is longer than the water filtering layer I3 in the transverse direction, the part of the water filtering layer I4, which exceeds the left side and the right side of the water filtering layer I3 in the transverse direction, is called an interface plate I5, and a connecting hole I6 is formed in the interface plate I5;

the protective plate II 2 comprises a water filtering layer II 8 arranged on the outer side and a water filtering layer II 9 arranged on the inner side, the water filtering layer II 8 is longitudinally flush with the water filtering layer II 9 and transversely longer than the water filtering layer II 9, the part of the water filtering layer II 8 transversely exceeding the left side and the right side of the water filtering layer II 9 is called an interface plate II 10, and a connecting hole II 11 is formed in the interface plate II 10;

backplate I1 and backplate II 2 are as an organic whole through I5, the II 10 overlap joint of fishplate bar, II 10 overlap joints of fishplate bar overlap joint I5 surfaces, and the lapped fishplate bar I5 of looks and the assembly of fishplate bar II 10 in the surface of fender pile 21 through connecting piece 13.

Furthermore, backplate I1 and backplate II 2 are prefabricated standard component.

Furthermore, the outer surface of the water filtering layer I3 is provided with a handle I7, and the outer surface of the water filtering layer II 8 is provided with a handle II 12.

Further, connecting hole I6, the same and center alignment of connecting hole II 11 size that looks lapped handing over plate I5 and handing over plate II 10 correspond, connecting piece 13 and connecting hole I6 and II 11 looks adaptations of connecting hole, inside connecting piece 13 passed in proper order behind handing over plate II 10 and the handing over plate I5 anchor into fender pile 21.

Further, the outer diameter of the upper end of the connecting piece 13 is larger than the inner diameters of the connecting hole I6 and the connecting hole II 11, a gasket 14 is arranged between the upper end of the connecting piece 13 and the cross connecting plate II 10, and the depth of the connecting piece 13 anchored into the supporting pile 21 is not lower than 5 cm.

Furthermore, the water filtering layer I3 and the water filtering layer II 8 are made of high-density composite materials formed by pressing after polyethylene and activated carbon are mixed, and the water filtering layer I4 and the water filtering layer II 9 are made of organic high-molecular low-density materials made of domestic garbage recovery.

A construction method of an assembled type guard plate suitable for a weathered rock area is characterized by comprising the following steps:

s1, excavating a foundation pit, and displaying a support pile, specifically, processing a weathered rock stratum 20 by using an excavator and a breaking hammer to be matched, so that a surface layer of the weathered rock stratum is flush with an outer side line of a support pile 21;

s2, assembling the guard plate I1 and the guard plate II 2, specifically, assembling a group of 2-4 persons, transversely assembling the guard plate I1 and the guard plate II 2 in a staggered manner along the lower bottom surface of the crown beam 22 at the top end of the support pile 21, overlapping the adjacent guard plate I1 and the guard plate II 2 with the corresponding cross connecting plate I5 and the cross connecting plate II 10, aligning centers of the connecting holes I6 and II 11 corresponding to the cross connecting plate I5 and II 10, and then enabling the connecting piece 13 to penetrate through the corresponding connecting hole II 11 and I6 and be anchored into the support pile 21;

s3, after a group of guard plates I1 and II 2 are assembled, sequentially assembling a next group of guard plates I1 and II 2 along the transverse direction until the total length of a row of transverse guard plates I1 and II 2 can cover the transverse length of a corresponding enclosure area;

s4, after assembling a row of transverse guard plates I1 and II 2, sequentially assembling the next row of guard plates I1 and II 2 along the longitudinal direction until the assembled guard plates I1 and II 2 can cover the whole enclosure area in the transverse direction and the longitudinal direction;

and S5, filling concrete in gaps between the assembled guard plates I1 and II 2 and the weathered rock layer 20 for plugging.

Furthermore, the sizes of the guard plate I1 and the guard plate II 2 are designed according to the area of a containment area, the guard plate I1 and the guard plate II 2 are both manufactured into standard parts in advance in a factory and are directly assembled on site.

Further, in step S2: the outer side of the connecting hole II 11 is provided with a gasket 14, the connecting piece 13 penetrates through the gasket 14 firstly and then penetrates through the connecting hole II 11 and the connecting hole I6, and the anchoring depth of the connecting piece 13 into the supporting pile 21 is not less than 5 cm.

Further, in step S4: and the next row of guard plates I1 and II 2 are arranged close to the previous row of guard plates I1 and II 2, and the gap between the two adjacent rows of guard plates I1 and II 2 is filled with a waterproof adhesive 23 for plugging.

Compared with the prior art, the invention has the following main advantages:

1. by using the assembled guard plate structure, the traditional steel bar net piece enclosure is replaced, the steps of steel bar binding, water drain hole construction, concrete spraying and the like are omitted, the difficulties of loose rock soil and difficult excavation in a weathered rock area are well overcome, and the construction period of the enclosure construction is greatly shortened;

2. the guard plates are prefabricated into standard parts and are directly spliced after arriving at the site, and the construction period is further shortened by applying an assembly type construction concept, the standard guard plates are uniform in size, and are transversely and longitudinally arranged in order during assembly construction, so that the attractiveness of a containment area is improved;

3. the drainage layer of the guard plate is made of an organic polymer low-density material prepared by recycling household garbage, the drainage layer is made of a high-density composite material formed by mixing and pressing polyethylene and activated carbon, underground water in rock between piles can be filtered and drained while the environment is protected, the cost is saved, broken stone rock soil between piles is blocked, compared with a traditional drainage hole, the drainage area is large, drainage is sufficient, and the influence of rock stratum water pressure on support can be reduced;

4. the gasket is arranged between the connecting piece and the cross connecting plate, so that the stress area of the connecting piece and the cross connecting plate can be increased, the damage to the cross connecting plate when the connecting piece is reinforced is reduced, effective anchoring is provided, and the integral enclosure effect of the guard plate is stable and reliable.

Drawings

FIG. 1 is a schematic view of a panel I of the present invention;

FIG. 2 is a schematic view of a shield II according to the present invention;

FIG. 3 is a schematic view of a connector of the present invention;

FIG. 4 is a schematic view of the overall assembly of the present invention;

FIG. 5 is an overall assembled side view of the present invention;

FIG. 6 is a flow chart of the construction method of the present invention.

In the figure: 1. a guard plate I; 2. a guard plate II; 3. filtering a water layer I; 4. a filtering soil layer I; 5. an interface board I; 6. connecting holes I; 7. a grip I; 8. a water filtering layer II; 9. a filtering soil layer II; 10. an interface board II; 11. a connecting hole II; 12. a grip II; 13. a connecting member; 14. a gasket; 20. weathered rock; 21. supporting piles; 22. a crown beam; 23. and (4) water-stop glue.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to fig. 1 to 6 and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

It should be noted that, according to the implementation requirement, each step/component described in the present application can be divided into more steps/components, and two or more steps/components or partial operations of the steps/components can be combined into new steps/components to achieve the purpose of the present invention.

The invention provides an assembled guard plate suitable for a weathered rock area, which is arranged on the outer surface of a support pile 21 anchored into a weathered rock layer 20 and comprises a plurality of groups of guard plates I1 and guard plates II 2 which are assembled in a staggered overlapping mode.

As shown in figure 1, backplate I1 contains the drainage layer I3 that sets up in the outside and sets up the filtering soil layer I4 in the inboard, filtering soil layer I4 is ascending with drainage layer I3 parallel and level on the longitudinal, is good at drainage layer I3 on horizontal, the part that I4 on the transverse surpasss I3 left and right sides of drainage layer is called the handing over board I5, connecting hole I6 has been seted up on handing over board I5, specifically can be the bolt hole.

As shown in fig. 2, backplate II 2 contains the drainage layer II 8 that sets up in the outside and sets up the filter soil layer II 9 in the inboard, II 8 longitudinal and II 9 parallel and level in the filter soil layer of drainage layer, be longer than filter soil layer II 9 on horizontal, II 8 parts that exceed II 9 left and right sides in the filter soil layer on horizontal of drainage layer are called the handing over board II 10, handing over board II 10 is last to have seted up connecting hole II 11, specifically can be the bolt hole.

The filter soil layer I4 and the filter soil layer II 9 are made of organic polymer low-density materials made of domestic garbage recovery, can filter partial soil and gravels in weathered rocks in a first step, are firm in structure, can bear the lateral force of the weathered rocks, and are first barriers for resisting rock stratums; the high density composite material that water filtering layer I3 and water filtering layer II 8 adopted polyethylene and active carbon to mix the back according to the mass ratio and suppress and form can play the filtering action of retaining slowly-releasing, treats that the ground in the filter soil layer filters the back, and moisture is through water filtering layer secondary filter, alright direct flow along the backplate surface, and more traditional outlet, the discharge surface is big, excretes fully, has reduced the influence that water pressure caused to strutting.

Meanwhile, the guard plate material is waste garbage and a new filter material, makes certain contribution to environmental protection, waste utilization and cost saving, is a recyclable material, can be reasonably selected by a user according to the self condition in the use process, and can be used as a permanent support material or subjected to secondary processing after disassembly for reutilization, so that the cost is further saved.

Further, backplate I1 and backplate II 2 are as an organic whole through handing-over board I5, II 10 overlap joint assemblings of handing-over board, II 10 overlap joints of handing-over board are at I5 surface of handing-over board, and lapped handing-over board I5 and II 10 of handing-over board assemble in fender pile 21's surface through connecting piece 13 mutually, specifically can be expansion bolts connection.

Wherein, connecting hole I6, the same and the center of connecting hole II 11 size that looks lapped handing over plate I5 and handing over plate II 10 correspond align, connecting piece 13 and connecting hole I6 and II 11 looks adaptations of connecting hole, connecting piece 13 passes handing over plate II 10 and handing over plate I5 back anchor in proper order and props up inside pile 21.

As shown in fig. 3, the outer diameter of the upper end of the connecting piece 13 is larger than the inner diameters of the connecting hole i 6 and the connecting hole ii 11, a gasket 14 is arranged between the upper end of the connecting piece 13 and the cross connecting plate ii 10, and the anchoring depth of the connecting piece 13 into the interior of the support pile 21 is not less than 5 cm.

Through set up the gasket between connecting piece and handing-over board, the lifting surface area of multiplicable connecting piece and handing-over board to reduce the destruction to the handing-over board when the connecting piece is consolidated and provide effectual anchor, make the holistic enclosure effect of backplate reliable and stable.

Furthermore, the guard plate I1 and the guard plate II 2 are both standard parts prefabricated in a factory.

The guard plates are prefabricated into standard parts, the standard parts are directly assembled on site, the assembly type construction concept is applied, the construction period is further shortened, the standard guard plates are uniform in size, the guard plates are transversely and longitudinally arranged in order during assembly construction, and the attractiveness of the enclosure area is improved.

Based on the same inventive concept, the embodiment of the application also provides a construction method of the assembled type guard plate suitable for the weathered rock area, as shown in fig. 4 to 6, the construction method comprises the following steps:

s1, excavating a foundation pit, displaying a shape of a support pile, and specifically, processing a weathered rock layer 20 by using a digger and a breaking hammer in a matched mode to enable a surface layer of the weathered rock layer to be flush with the outer side line of the support pile 21.

S2, assembling the guard plate I1 and the guard plate II 2, specifically, assembling a group of 2-4 persons, transversely and alternately assembling the guard plate I1 and the guard plate II 2 along the lower bottom surface of a crown beam 22 at the top end of a support pile 21, overlapping the adjacent guard plate I1 and the adjacent guard plate I5 and guard plate II 2 corresponding to the cross connecting plate I5 and the cross connecting plate II 10 together, aligning centers of the connecting holes I6 and II 11 corresponding to the cross connecting plate I5 and II 10, and then enabling the connecting piece 13 to penetrate through the corresponding connecting hole II 11 and the connecting hole I6 and be anchored into the support pile 21.

The size of the guard plate I1 and the size of the guard plate II 2 are designed according to the area of a containment area, the guard plate I1 and the guard plate II 2 are both manufactured into standard parts in advance in a factory and are directly assembled on site.

Furthermore, a gasket 14 is arranged on the outer side of the connecting hole II 11, the connecting piece 13 penetrates through the gasket 14 firstly and then penetrates through the connecting hole II 11 and the connecting hole I6, and the depth of the connecting piece 13 anchored into the supporting pile 21 is not less than 5 cm.

And S3, after the group of guard plates I1 and II 2 are assembled, sequentially assembling the next group of guard plates I1 and II 2 along the transverse direction until the total length of the transverse row of guard plates I1 and II 2 can cover the transverse length of the corresponding enclosure area.

And S4, after the transverse row of the guard plates I1 and the transverse row of the guard plates II 2 are assembled, sequentially assembling the next row of the guard plates I1 and the next row of the guard plates II 2 along the longitudinal direction, specifically two or three rows, until the assembled guard plates I1 and II 2 can cover the whole enclosure area in the transverse direction and the longitudinal direction.

The next row of guard plates I1 and II 2 are arranged close to the previous row of guard plates I1 and II 2, and the gap between the two adjacent rows of guard plates I1 and II 2 is filled with the waterproof glue 23 for plugging.

And S5, filling concrete in gaps between the assembled protective plate I1 and protective plate II 2 and the weathered rock stratum 20 for plugging.

Furthermore, after the foundation pit engineering is finished, the guard plate can become a permanent supporting structure or be dismantled according to the situation, and the dismantled plate can be subjected to secondary processing and reused.

By adopting the assembled guard plate and the construction method thereof, a new material guard plate and the support pile are perfectly combined, so that the slope support enters a new material and technical era, a process of spray anchor support is cancelled in a weathered rock stratum region with better geology, the steps of binding of reinforcing mesh sheets, drilling rock strata, arranging drain holes, spraying concrete and the like are reduced, the support and drainage effects of spray anchor are achieved, and the beneficial effects of waste utilization and material recycling are realized.

It will be understood by those skilled in the art that the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, since various modifications, substitutions and improvements within the spirit and scope of the invention are possible and within the scope of the appended claims.

Claims

1. A construction method of an assembled guard plate suitable for a weathered rock area is characterized by comprising the following steps: the assembled guard plate is arranged on the outer surface of a supporting pile (21) anchored into a weathered rock stratum (20) and comprises a plurality of groups of guard plates I (1) and guard plates II (2) which are assembled in a staggered overlapping mode, the guard plates I (1) comprise a water filtering layer I (3) arranged on the outer side and a water filtering layer I (4) arranged on the inner side, the water filtering layer I (4) is longitudinally flush with the water filtering layer I (3) and transversely longer than the water filtering layer I (3), the part of the water filtering layer I (4) transversely exceeding the left side and the right side of the water filtering layer I (3) is called an interconnecting plate I (5), and a connecting hole I (6) is formed in the interconnecting plate I (5);

the guard plate II (2) comprises a water filtering layer II (8) arranged on the outer side and a filtering soil layer II (9) arranged on the inner side, the water filtering layer II (8) is longitudinally flush with the filtering soil layer II (9) and transversely longer than the filtering soil layer II (9), the part of the water filtering layer II (8) transversely exceeding the left side and the right side of the filtering soil layer II (9) is called a cross connection plate II (10), and a connecting hole II (11) is formed in the cross connection plate II (10);

the protective plate I (1) and the protective plate II (2) are assembled into a whole through the cross connecting plate I (5) and the cross connecting plate II (10) in a lap joint mode, the cross connecting plate II (10) is in a lap joint mode on the outer surface of the cross connecting plate I (5), and the cross connecting plate I (5) and the cross connecting plate II (10) which are in lap joint are assembled on the outer surface of the supporting pile (21) through the connecting piece (13);

the water filtering layer I (3) and the water filtering layer II (8) are made of high-density composite materials formed by mixing and pressing polyethylene and activated carbon according to the mass ratio of 8-15, and the water filtering layer I (4) and the water filtering layer II (9) are made of organic high-molecular low-density materials prepared by recycling household garbage;

the construction method comprises the following steps:

s1, excavating a foundation pit, and displaying a support pile, specifically, processing a weathered rock stratum (20) by using an excavator and a breaking hammer to be matched, so that a surface layer of the weathered rock stratum is flush with the outer side line of the support pile (21);

s2, assembling the guard plate I (1) and the guard plate II (2), specifically, assembling a group of 2-4 persons, starting transverse staggered assembly of the guard plate I (1) and the guard plate II (2) along the lower bottom surface of a crown beam (22) at the top end of a support pile (21), overlapping the cross connecting plate I (5) and the cross connecting plate II (10) corresponding to the adjacent guard plate I (1) and the guard plate II (2) together, aligning the centers of the connecting holes I (6) and the connecting holes II (11) corresponding to the cross connecting plate I (5) and the cross connecting plate II (10) which are overlapped with each other, and then enabling the connecting piece (13) to penetrate through the corresponding connecting holes II (11) and the corresponding connecting holes I (6) and be anchored into the support pile (21);

s3, after a group of guard plates I (1) and II (2) are assembled, sequentially assembling a next group of guard plates I (1) and II (2) along the transverse direction until the total length of a row of transverse guard plates I (1) and II (2) can cover the transverse length of a corresponding enclosure area;

s4, after assembling the transverse row of the guard plates I (1) and the transverse row of the guard plates II (2), sequentially assembling the next row of the guard plates I (1) and the next row of the guard plates II (2) along the longitudinal direction until the assembled guard plates I (1) and II (2) can cover the whole enclosure area in the transverse direction and the longitudinal direction;

the next row of guard plates I (1) and the next row of guard plates II (2) are arranged next to the guard plates I (1) and the guard plates II (2) of the previous row, and water stop glue (23) is filled in gaps between the adjacent two rows of guard plates I (1) and the adjacent two rows of guard plates II (2) for plugging;

and S5, filling concrete in gaps between the assembled guard plates I (1) and II (2) and the weathered rock layer (20) for plugging.

2. The fabricated armor construction method for weathered rock areas according to claim 1, wherein: the guard plate I (1) and the guard plate II (2) are prefabricated standard parts.

3. The method for constructing the fabricated panel for the weathered rock area according to claim 1, wherein the method comprises the following steps: the outer surface of the water filtering layer I (3) is provided with a handle I (7), and the outer surface of the water filtering layer II (8) is provided with a handle II (12).

4. The method for constructing the fabricated panel for the weathered rock area according to claim 1, wherein the method comprises the following steps: connecting hole I (6), the same and center of connecting hole II (11) size that looks lapped handing-over plate I (5) and handing-over plate II (10) correspond align, connecting piece (13) and connecting hole I (6) and connecting hole II (11) looks adaptation, inside anchor income fender pile (21) after connecting piece (13) pass handing-over plate II (10) and handing-over plate I (5) in proper order.

5. The fabricated panel construction method suitable for weathered rock areas according to claim 1 or 4, wherein: the outer diameter of the upper end of the connecting piece (13) is larger than the inner diameter of the connecting hole I (6) and the connecting hole II (11), a gasket (14) is arranged between the upper end of the connecting piece (13) and the cross connecting plate II (10), and the depth of the connecting piece (13) anchored into the interior of the supporting pile (21) is not lower than 5 cm.

6. The method for constructing the fabricated panel for the weathered rock area according to claim 1, wherein the method comprises the following steps: the size of the guard plate I (1) and the size of the guard plate II (2) are designed according to the area of a containment area, the guard plate I (1) and the guard plate II (2) are both manufactured into standard parts in advance in a factory, and the standard parts are directly assembled on site.

7. The fabricated panel construction method suitable for weathered rock areas according to claim 1, wherein in step S2: the outer side of the connecting hole II (11) is provided with a gasket (14), the connecting piece (13) penetrates through the gasket (14) firstly and then penetrates through the connecting hole II (11) and the connecting hole I (6), and the depth of the connecting piece (13) anchored into the supporting pile (21) is not less than 5 cm.