A fabricated hanging plate structure applied to retaining wall reconstruction and a construction method thereof

Abstract

The application discloses an assembled panel structure applied to retaining wall reconstruction, which comprises a panel main body constructed at a wall toe of a retaining wall bottom plate of a present vertical retaining wall, and the panel main body is assembled by a plurality of prefabricated panel units arranged side by side along the length direction of the retaining wall; each prefabricated panel unit comprises a horizontally arranged panel bottom plate, a vertically arranged panel vertical plate arranged on the lower plate surface of the panel bottom plate and connected with the panel bottom plate, left and right hollow side columns arranged on the upper plate surface of the panel bottom plate and located at the left and right sides of the panel bottom plate, and a panel panel arranged on the upper plate surface of the panel bottom plate and located between the left and right hollow side columns. A construction method of the above-mentioned assembled panel structure applied to retaining wall reconstruction is also disclosed. The application has the advantages of no cofferdam during construction, fast construction speed, good landscape effect, safety and reliability and the like.

Description

Technical Field

[0001] This invention relates to the field of retaining wall renovation technology, and in particular to a prefabricated hanging panel structure for retaining wall renovation and its construction method. Background Technology

[0002] Traditional urban river retaining walls primarily aim at flood control, often employing a vertical retaining wall structure, which offers advantages such as small footprint, strong erosion resistance, and convenient operation and maintenance. In recent years, with socio-economic development, improved living standards, and heightened awareness of ecological protection, urban water environments have received increasing attention from all sectors of society. River construction has shifted from the traditional concept of flood control and drainage to the concept of creating a "safe, comfortable, and beautiful" water environment. In addition to meeting basic flood control and drainage needs, river functions must also consider ecological, landscape, and recreational functions.

[0003] Currently, numerous vertical retaining wall structures exist along both banks of the river, mostly high-pile cap structures with front sheet piles and rear square piles. These rigid retaining walls completely sever the ecological connection between the water and land areas, negatively impacting the ecological landscape of the waterfront space. Therefore, it is necessary to ecologically transform the existing vertical retaining walls, reconnecting the land and water areas, enhancing the ecological and scenic value of the riverbanks, providing abundant green ecological space for riverside residents, and offering people a diverse waterfront experience.

[0004] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Summary of the Invention

[0005] One of the technical problems to be solved by the present invention is to provide a prefabricated hanging panel structure for retaining wall renovation that does not require cofferdams during construction, has a fast construction speed, good landscape effect, and is safe and reliable, in order to overcome the shortcomings of the existing technology.

[0006] The second technical problem to be solved by the present invention is to provide a construction method for the above-mentioned prefabricated hanging panel structure applied to retaining wall renovation.

[0007] As a first aspect of the present invention, a prefabricated hanging panel structure applied to retaining wall renovation includes a hanging panel body constructed at the toe of the retaining wall base plate of an existing vertical retaining wall. The hanging panel body is assembled from several prefabricated hanging panel units arranged side by side along the length of the retaining wall.

[0008] Each prefabricated panel unit includes:

[0009] The hanging panel base is set horizontally;

[0010] A vertical mounting plate that is vertically installed on the lower surface of the mounting plate base and connected to the mounting plate base;

[0011] Left and right hollow side columns are provided on the upper surface of the base plate of the hanging plate and located on the left and right sides of the base plate; and

[0012] The hanging panel is disposed on the upper plate surface of the hanging panel base plate and located between the left and right hollow side columns, and the left and right sides of the hanging panel are connected to the outer sides of the left and right hollow side columns.

[0013] When two adjacent precast panel units are assembled, the right hollow side column of one precast panel unit and the left hollow side column of the other precast panel unit enclose a closed casting chamber, and concrete is poured into the casting chamber to securely connect the two adjacent precast panel units.

[0014] In a preferred embodiment of the present invention, the length of the prefabricated hanging panel unit is 3m to 5m, the thickness of the hanging panel bottom plate and the hanging panel vertical plate is 150mm to 250mm, the thickness of the left and right hollow side columns is 100mm to 200mm, and the thickness of the hanging panel is 100mm to 200mm.

[0015] In a preferred embodiment of the invention, the lowest point of each prefabricated hanging plate unit is higher than the lowest water level of the river.

[0016] In a preferred embodiment of the present invention, the hanging panel has an arc-shaped structure and protrudes towards the water-facing side.

[0017] In a preferred embodiment of the present invention, the hollow shape inside the left and right hollow side pillars is a hollow semicircle or a hollow rectangle.

[0018] In a preferred embodiment of the present invention, a steel plate is inserted into the casting chamber, the steel plate being perpendicular to the bottom plate of the hanging plate and parallel to the vertical plate of the hanging plate.

[0019] In a preferred embodiment of the present invention, several steel bars are installed on the bottom plate of the existing vertical retaining wall at the casting chamber formed between two adjacent precast hanging plate units.

[0020] In a preferred embodiment of the present invention, at least one positioning steel plate with the same planar shape as the prefabricated hanging plate unit is also included, and the positioning steel plate is used to pre-determine the position where the rebar needs to be installed during rebar installation.

[0021] In a preferred embodiment of the present invention, after the plurality of prefabricated hanging panel units are assembled on the base plate of the existing vertical retaining wall, a planting trough for planting green plants is formed between the hanging panel panel and the base plate and the wall body of the existing vertical retaining wall.

[0022] In a preferred embodiment of the present invention, after the prefabricated hanging plate units are assembled on the bottom plate of the existing vertical retaining wall, the retaining wall body of the existing vertical retaining wall is demolished, and earthwork is backfilled on the slope behind the existing vertical retaining wall to form a sloping revetment, and a secondary retaining wall structure is constructed at the top of the sloping revetment.

[0023] As a second aspect of the present invention, a construction method for the above-mentioned prefabricated hanging panel structure applied to retaining wall renovation includes the following steps:

[0024] Step S10: Rebar is installed on the toe of the retaining wall base plate of the existing vertical retaining wall at the casting chamber formed between each two adjacent precast hanging plate units. When installing the rebar, the position to be installed can be determined in advance by positioning steel plate.

[0025] Step S20: Use a high-pressure water gun to clean the surface of the base plate of the existing vertical retaining wall and roughen it. After the surface of the base plate is dry, apply a grouting treatment to the surface of the base plate.

[0026] Step S30: Hoist two adjacent precast hanging plate units onto the bottom plate of the existing vertical retaining wall, so that the casting chamber formed between the two adjacent precast hanging plate units surrounds the corresponding rebar, inserts a steel plate into the casting chamber, and then pours concrete into the casting chamber.

[0027] Step S40, repeat step S30 until all prefabricated panel units are installed;

[0028] Step S50: Perform ecological greening treatment according to different renovation plans.

[0029] In a preferred embodiment of the present invention, the ecological greening treatment according to different transformation schemes includes:

[0030] For the renovation plan of the retaining wall without demolishing the existing vertical retaining wall, after the prefabricated panel units are installed, greening will be carried out in the planting troughs formed between several prefabricated panel units and the existing vertical retaining wall; and

[0031] For the renovation plan of demolishing the existing vertical retaining wall, after the prefabricated hanging panel unit is installed, the existing vertical retaining wall will be demolished, and earthwork will be backfilled on the slope behind the existing vertical retaining wall to form a sloping revetment. A secondary retaining wall structure will be constructed at the top of the sloping revetment.

[0032] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: The present invention sets up several prefabricated hanging plate units on the bottom plate of the existing vertical retaining wall by means of assembly, and carries out ecological transformation of the existing vertical retaining wall according to the structural characteristics of the prefabricated hanging plate units. It has the advantages of no need for cofferdam during construction, fast construction speed, good landscape effect, and safety and reliability. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the assembly of several prefabricated hanging panel units of the present invention.

[0035] Figure 2 This is a three-dimensional structural schematic diagram from one perspective of Embodiment 1 of the prefabricated hanging panel unit of the present invention.

[0036] Figure 3 This is a three-dimensional structural schematic diagram from another perspective of Embodiment 1 of the prefabricated hanging panel unit of the present invention.

[0037] Figure 4 yes Figure 2 Top view.

[0038] Figure 5 This is a three-dimensional structural schematic diagram of Embodiment 2 of the prefabricated hanging panel unit of the present invention.

[0039] Figure 6 This is a top view of the assembled prefabricated hanging panel units of the present invention.

[0040] Figure 7 This is a three-dimensional structural schematic diagram of the positioning steel plate of the present invention.

[0041] Figure 8 This is a schematic diagram illustrating the effect of one modification scheme of the present invention.

[0042] Figure 9 This is a schematic diagram illustrating the effect of another modification scheme of the present invention.

[0043] Figure 10 This is a schematic diagram of the present invention for anchoring rebar using a positioning steel plate.

[0044] Figure 11 This is a schematic diagram of the insertion of steel plates after the hoisting of two adjacent prefabricated hanging plate units of the present invention.

[0045] Figure 12 This is a schematic diagram of the construction of one modification scheme of the present invention.

[0046] Figure 13 This is a schematic diagram illustrating the construction of another modification scheme of the present invention. Detailed Implementation

[0047] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0048] See Figures 1 to 6 The figure shows a prefabricated hanging panel structure used for retaining wall renovation, including a hanging panel body 100 constructed at the toe of the retaining wall base plate 11 of the existing vertical retaining wall 10. The hanging panel body 100 is assembled from several prefabricated hanging panel units 110 arranged side by side along the length of the retaining wall.

[0049] Each prefabricated hanging panel unit 110 includes a hanging panel base plate 111, hanging panel vertical plates 112, left and right hollow side columns 113a and 113b, and a hanging panel face plate 114. The hanging panel base plate 111, hanging panel vertical plates 112, left and right hollow side columns 113a and 113b, and hanging panel face plate 114 are prefabricated and integrally formed in the factory. The hanging panel base plate 111 is horizontally arranged and can overlap the toe of the retaining wall base plate 11 of the existing vertical retaining wall 10. The hanging panel vertical plates 112 are vertically arranged on the lower plate surface of the hanging panel base plate 111 and connected to the hanging panel base plate 111. The left and right hollow side columns 113a and 113b are arranged on the upper plate surface of the hanging panel base plate 111 and are located on the left and right sides of the hanging panel base plate 111. The hanging panel 114 is set on the upper plate surface of the hanging panel base plate 111 and is located between the left and right hollow side posts 113a and 113b. The left and right edges of the hanging panel 114 are connected to the outer surfaces of the left and right hollow side posts 113a and 113b.

[0050] The length of the prefabricated hanging panel unit 110 is 3m to 5m, and should not exceed 5m; the thickness of the hanging panel bottom plate 111 and the hanging panel vertical plate 112 is 150mm to 250mm; the thickness of the left and right hollow side columns 113a and 113b is 100mm to 200mm; and the thickness of the hanging panel face plate 114 is 100mm to 200mm. The height of the hanging panel vertical plate 112 and the hanging panel face plate 114 can be modularly adjusted according to project needs.

[0051] When two adjacent precast panel units 110 are assembled, the right hollow side column 113b of one precast panel unit 110 and the left hollow side column 113a of the other precast panel unit 110 enclose a closed casting chamber 101, and concrete is poured into the casting chamber 101, so that the two adjacent precast panel units 110 are tightly spliced ​​together.

[0052] The hollow shapes within the left and right hollow side pillars 113a and 113b can be hollow semicircles, such as... Figure 2 or Figure 3 As shown; the left and right hollow side pillars 113a and 113b can also be hollow rectangles, such as Figure 5 As shown. Of course, it can also be set to other hollow shapes, as long as the two adjacent prefabricated hanging panel units 110 form a closed casting chamber during assembly.

[0053] The hanging panel 114 between the left and right hollow side columns 113a and 113b can be designed as an arc-shaped structure, protruding towards the water-facing side. This makes the upper part of the hanging panel body 100 appear wave-shaped. When encountering ship waves, the waves will be diverted to both sides according to the shape of the hanging panel 114, effectively reducing the impact of ship waves. Figure 6 As shown.

[0054] A steel plate 120 is inserted into the casting chamber 101. The steel plate 120 is perpendicular to the bottom plate 111 of the hanging plate and parallel to the vertical plate 112 of the hanging plate. The setting of the steel plate 120 effectively enhances the integrity and water-stopping effect.

[0055] To improve the installation stability of the precast panel unit 110, several steel bars 130 are installed on the bottom plate 11 of the existing vertical retaining wall 10 at the pouring chamber 101 formed between two adjacent precast panel units 110. The steel bars 130 cooperate with the concrete poured in the pouring chamber 101 to improve the splicing stability of the two adjacent precast panel units 110.

[0056] See Figure 7 To facilitate rebar installation, the present invention also includes a positioning steel plate 140 with the same planar shape as the prefabricated hanging plate unit 110. The positioning steel plate 140 is used to pre-determine the position where the rebar needs to be installed during rebar installation.

[0057] The prefabricated hanging panel structure of this invention, applicable to retaining wall renovation, is suitable for renovations of similar cross-sections, where the vertical retaining wall has no greenery on the water-facing side and the bottom elevation of the retaining wall base is relatively high, exposing the lower pile foundation when the water level is low, which is unsightly. In this case, the prefabricated hanging panel structure of this invention can be used for ecological renovation. There are two renovation schemes: one is to retain the existing vertical retaining wall body, and the other is to remove the existing vertical retaining wall body.

[0058] See Figure 8The proposed modification scheme shown in the diagram involves modifying the existing vertical retaining wall 10 without demolishing its wall body 12. This scheme is suitable for riverbank sections where there is no usable land space behind the wall. Several prefabricated hanging panel units 110 are installed at the toe of the existing retaining wall base 11 of the vertical retaining wall 10. The lowest point of each prefabricated hanging panel unit 110 should be higher than the lowest water level of the river channel to prevent the lower pile foundation of the existing vertical retaining wall 10 from being exposed. If the prefabricated hanging panel units 110 are assembled on the existing retaining wall base 11 of the vertical retaining wall 10, a planting trough 200 is formed between the hanging panel 114 and the existing retaining wall base 11 and retaining wall body 12, creating a waterfront space for planting greenery. Greenery can be planted within the planting trough 200.

[0059] See Figure 9 The proposed renovation plan shown in the diagram involves demolishing the existing vertical retaining wall 10, suitable for riverbank sections with usable land behind the wall. If the control panel unit 110 is assembled on the base plate 11 of the existing vertical retaining wall 10, the existing retaining wall 10 will be demolished, retaining the base plate 11 and bottom pile foundation 13. Earth will be backfilled on the slope behind the existing vertical retaining wall 10 to form a sloping revetment 300, and a secondary retaining wall structure 400 will be constructed at the top of the sloping revetment 300. The sloping revetment 300 can achieve a better landscape effect through slope landscaping, without separating the land and water areas, resulting in good ecological balance.

[0060] This invention discloses a construction method for a prefabricated panel structure applied to retaining wall renovation. This method allows for construction while the water is still flowing, and can be carried out during the non-flood season when the water level is low, thus eliminating the need for cofferdams to install the prefabricated panel units. The construction method includes the following steps:

[0061] Step S10, see Figure 10 On the toe of the retaining wall base plate 11 of the existing vertical retaining wall 10, reinforcement bars are installed at the casting chamber 101 formed between each two adjacent precast hanging plate units 110. In order to avoid errors in the installation position, the position to be installed can be determined in advance by several positioning steel plates 140.

[0062] Step S20: Since the retaining wall base plate 11 of the vertical retaining wall 10 is an old structure, the surface of the retaining wall base plate 11 is uneven and has some dirt. It is necessary to use a high-pressure water gun to clean the surface of the retaining wall base plate 11 of the existing vertical retaining wall 10 and roughen it. After the surface of the retaining wall base plate 11 is dry, the surface of the retaining wall base plate 11 is treated with grout. The grout serves to level the surface and prevent leakage between the prefabricated hanging plate unit 110 and the retaining wall base plate 11.

[0063] Step S30, see Figure 11Two adjacent precast hanging plate units 110 are respectively hoisted onto the retaining wall base plate 11 of the existing vertical retaining wall 10, so that the casting chamber 101 formed between the two adjacent precast hanging plate units 110 surrounds the corresponding rebar 130, and steel plate 140 is inserted into the casting chamber 101, and then early strength self-compacting concrete is poured into the casting chamber 101.

[0064] Step S40, repeat step S30 until all prefabricated panel units are installed;

[0065] Step S50 involves ecological greening treatment based on different renovation plans, including two plans as follows:

[0066] See Figure 12 For the renovation plan of retaining wall body without demolishing the existing vertical retaining wall, after the prefabricated hanging panel unit 110 is installed, greening is carried out in the planting trough 200 formed between several prefabricated hanging panel units 110 and the existing vertical retaining wall body 12 of the retaining wall 10.

[0067] See Figure 13 For the renovation plan of demolishing the existing vertical retaining wall, after the prefabricated hanging panel unit 110 is installed, the existing vertical retaining wall 10 is demolished, and earth is backfilled on the slope behind the existing vertical retaining wall 10 to form a sloping revetment 300. A secondary retaining wall structure 400 is constructed at the top of the sloping revetment 300. The sloping revetment 300 can form a better landscape effect through the slope landscape greening project, and the land and water areas are not separated, which has good ecological properties.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated hanging panel structure for retaining wall renovation, comprising a hanging panel body constructed at the toe of the retaining wall base slab of an existing vertical retaining wall, characterized in that, The main body of the hanging panel is assembled from several prefabricated hanging panel units arranged side by side along the length of the retaining wall; Each prefabricated panel unit includes: The hanging panel base is set horizontally; A vertical mounting plate that is vertically installed on the lower surface of the mounting plate base and connected to the mounting plate base; Left and right hollow side columns are provided on the upper surface of the base plate of the hanging plate and located on the left and right sides of the base plate; and The hanging panel is disposed on the upper plate surface of the hanging panel base plate and located between the left and right hollow side columns, and the left and right sides of the hanging panel are connected to the outer sides of the left and right hollow side columns. When two adjacent precast panel units are assembled, the right hollow side column of one precast panel unit and the left hollow side column of the other precast panel unit enclose a circumferentially closed casting chamber, and concrete is poured into the casting chamber to securely splice the two adjacent precast panel units.

2. The prefabricated hanging panel structure for retaining wall renovation as described in claim 1, characterized in that, The length of the prefabricated hanging panel unit is 3m to 5m, the thickness of the hanging panel bottom plate and the hanging panel vertical plate is 150mm to 250mm, the thickness of the left and right hollow side columns is 100mm to 200mm, and the thickness of the hanging panel face plate is 100mm to 200mm.

3. The prefabricated hanging panel structure for retaining wall renovation as described in claim 1, characterized in that, The lowest point of each prefabricated panel unit is higher than the lowest water level of the river.

4. The prefabricated hanging panel structure for retaining wall renovation as described in claim 1, characterized in that, The hanging panel has an arc-shaped structure and protrudes towards the water-facing side.

5. The prefabricated hanging panel structure for retaining wall renovation as described in claim 1, characterized in that, The hollow shapes inside the left and right hollow side pillars are hollow semicircles or hollow rectangles.

6. The prefabricated hanging panel structure for retaining wall renovation as described in claim 1, characterized in that, A steel plate is inserted into the casting chamber, the steel plate being perpendicular to the bottom plate of the hanging plate and parallel to the vertical plate of the hanging plate.

7. The prefabricated hanging panel structure for retaining wall renovation as described in claim 6, characterized in that, Several steel bars are installed on the bottom slab of the existing vertical retaining wall at the casting chamber formed between two adjacent precast hanging plate units.

8. The prefabricated hanging panel structure for retaining wall renovation as described in claim 7, characterized in that, It also includes at least one positioning steel plate that has the same planar shape as the prefabricated hanging plate unit. The positioning steel plate is used to pre-determine the position where the rebar needs to be installed during rebar installation.

9. The prefabricated hanging panel structure applied to retaining wall renovation as described in any one of claims 1 to 8, characterized in that, After the prefabricated hanging panel units are assembled on the base plate of the existing vertical retaining wall, a planting trough for planting green plants is formed between the hanging panel panel and the base plate and body of the existing vertical retaining wall.

10. The prefabricated hanging panel structure applied to retaining wall renovation as described in any one of claims 1 to 8, characterized in that, After the prefabricated hanging panel units are assembled on the base plate of the existing vertical retaining wall, the retaining wall body of the existing vertical retaining wall is demolished, and earthwork is backfilled on the slope behind the existing vertical retaining wall to form a sloping revetment. A secondary retaining wall structure is then constructed at the top of the sloping revetment.

11. A construction method for a prefabricated hanging panel structure applied to retaining wall renovation as described in any one of claims 1 to 10, characterized in that, Includes the following steps: Step S10: Rebar is installed on the toe of the retaining wall base plate of the existing vertical retaining wall at the casting chamber formed between each two adjacent precast hanging plate units. When installing the rebar, positioning steel plates are used to pre-determine the position where the rebar needs to be installed. Step S20: Use a high-pressure water gun to clean the surface of the base plate of the existing vertical retaining wall and roughen it. After the surface of the base plate is dry, apply a grouting treatment to the surface of the base plate. Step S30: Hoist two adjacent precast hanging plate units onto the bottom plate of the existing vertical retaining wall, so that the casting chamber formed between the two adjacent precast hanging plate units surrounds the corresponding rebar, inserts a steel plate into the casting chamber, and then pours concrete into the casting chamber. Step S40, repeat step S30 until all prefabricated panel units are installed; Step S50: Perform ecological greening treatment according to different renovation plans.

12. The construction method as described in claim 11, characterized in that, The ecological greening treatment based on different renovation schemes includes: For the renovation plan of the retaining wall without demolishing the existing vertical retaining wall, after the prefabricated panel units are installed, greening will be carried out in the planting troughs formed between several prefabricated panel units and the existing vertical retaining wall; and For the renovation plan of demolishing the existing vertical retaining wall, after the prefabricated hanging panel unit is installed, the existing vertical retaining wall will be demolished, and earthwork will be backfilled on the slope behind the existing vertical retaining wall to form a sloping revetment. A secondary retaining wall structure will be constructed at the top of the sloping revetment.

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