CN111335355A - Special-shaped block post-pouring type light retaining wall supporting structure and construction method thereof - Google Patents

Abstract

The invention discloses a special-shaped block post-pouring type light retaining wall supporting structure and a construction method thereof, wherein the special-shaped block post-pouring type light retaining wall supporting structure comprises standard special-shaped blocks, end building blocks, a steel reinforcement framework and an internal concrete core body; the cross section of the standard special-shaped block is pi-shaped and comprises a block panel, a reinforcing rib, a longitudinal reinforcing steel bar groove and a transverse reinforcing steel bar groove; the end building blocks are used for sealing the ends or angular points of the box-type wall body structure; the steel bar framework comprises longitudinal steel bars, transverse steel bars and vertical steel bars; and building the standard special-shaped blocks and the end building blocks upwards layer by layer according to the cross section form of the retaining wall and the principle of up-down staggered joint lap joint to form a closed box-type wall body structure, and then pouring in layers to form an internal concrete core body. The invention overcomes the defects that the vertical steel bars need to be inserted backwards and are easy to cut off in a large scale in the prior art, effectively ensures the bearing performance of the wall body and does not need to be grouted. The retaining wall support structure is simple, convenient to construct and outstanding in cost performance, and has a high innovation level and a high engineering popularization and application value.

Description

A special-shaped block post-cast light retaining wall supporting structure and construction method thereof

technical field

The invention belongs to the field of roadbed engineering supporting structures, in particular to a post-cast light retaining wall supporting structure of special-shaped blocks and a construction method thereof.

Background technique

Retaining wall refers to the supporting structure supporting roadbed fill, natural slope, revetment of waterway, harbor, landscape wall and hillside soil, etc., mainly to prevent the deformation and instability of fill or soil. Among them, gravity retaining wall and light retaining wall are the most commonly used retaining wall structures in my country. Traditional light retaining walls mainly include cantilever type and buttress type structures, mainly using cast-in-place concrete construction technology. Due to repeated formwork erection and formwork removal operations in the wall pouring project, large-scale formwork turnover and on-site coordination are required. large amount.

Reinforced concrete block structure is a new type of structure developed in recent years and widely used. It is widely used in construction, municipal roads, park landscape and other fields. The block structure has almost the same performance as the cast-in-place structure. Most of the traditional concrete blocks are closed. After the masonry of the wall is completed, the vertical stress steel bars need to be inserted later, which leads to the large-scale truncation of the vertical stress steel bars at the same cross-sectional position, which seriously affects the overall work performance of the wall structure. . In addition, after the completion of the masonry of the concrete block retaining wall, the hole filling operation is generally required. However, due to the relatively small holes in the concrete block, it is relatively difficult to vibrate the filling hole concrete. In addition, the horizontal reinforcement of the traditional reinforced concrete block retaining wall is generally arranged in the ash joint, and the anchoring effect of the horizontal reinforcement is mainly determined by the masonry bonding material of the masonry structure. Unfavorable, and the arrangement of horizontal stress reinforcement in the ash joint will further reduce the masonry performance of the concrete block.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a special-shaped block post-cast light retaining wall supporting structure and a construction method thereof with simple structure, convenient construction and reliable force.

The technical purpose of the present invention is achieved through the following technical solutions.

A post-cast light retaining wall supporting structure of special-shaped blocks includes standard special-shaped blocks, end blocks, reinforced skeletons and internal concrete cores.

The cross-section of the standard special-shaped block is π-shaped, including a block panel formed by integral casting, two reinforcing ribs symmetrically and vertically arranged on the same side of the block panel, and the upper surface of the block panel is connected to the reinforcing rib. The upper surface of the panel is on the same level, and the lower surface of the block panel and the lower surface of the reinforcing rib are also on the same level; the reinforcing rib sinks at the connection with the block panel to form a longitudinally penetrating steel groove, and The longitudinal reinforcement grooves are arranged in the horizontal direction; the upper surfaces of the reinforcing ribs are provided with transverse reinforcement grooves, and the extension lines of the transverse reinforcement grooves are perpendicular to and intersect with the connection surfaces of the corresponding reinforcement ribs and the block panel. Preferably, the groove depth of the longitudinal reinforcement groove is not less than twice the groove depth of the transverse reinforcement groove.

The steel skeleton includes longitudinal steel bars, transverse steel bars and vertical steel bars.

On the basis of the cast-in-place foundation anchoring, the standard special-shaped blocks and the end blocks are arranged according to the cross-sectional form of the retaining wall to form a closed space, and are built up layer by layer according to the following overall principles to form a closed box-shaped wall structure: standard special-shaped blocks The upper and lower layers of the block are staggered and overlapped. Each layer is composed of two opposite rows of standard special-shaped blocks. The two standard special-shaped blocks set opposite each other in each layer are staggered and their reinforcing ribs are aligned with each other. The reinforcing ribs are aligned with each other; the ends or corners of the standard special-shaped blocks of each layer are closed by the end blocks to ensure the sealing of the closed box-shaped wall structure.

During the masonry process, a steel skeleton is arranged inside the closed box-type wall structure, wherein the longitudinal steel bars are arranged in the longitudinal steel bar grooves of a plurality of standard special-shaped blocks that are built on the same side, and the transverse steel bars are arranged at the same side. In the transverse reinforcement grooves of the two opposite reinforcement ribs, the vertical reinforcement is pre-set in the space between the two adjacent reinforcement ribs and vertically runs through the entire closed box wall structure and is connected with the cast-in-place foundation. Concrete foundation reinforcement connection in anchorage. The closed box-type wall structure may be a cantilevered retaining wall structure or a buttressed retaining wall structure. After the masonry of the closed box-type wall structure is completed, the curing age is not less than 7 days, and then the inner concrete core is formed by layer-by-layer pouring from bottom to top in the closed box-type wall structure by post-pouring.

In an embodiment of the present invention, the end block is formed by removing a reinforcing rib on the basis of the standard special-shaped block, or adding a reinforcing rib perpendicular to the block panel along the vertical direction on the basis of half of the standard special-shaped block. The end panels form functional auxiliary blocks, and the reinforced skeleton further includes a longitudinal reinforcement provided in a transverse reinforcement groove on the reinforcing rib of the opposite end block.

In an embodiment of the present invention, the standard special-shaped block further includes two transverse reinforcement holes, which are respectively arranged between the block panel and the reinforcement ribs in the vertical direction; the transverse reinforcement is an inverted U shape, and the transverse reinforcement Insert the two ends of the corresponding standard special-shaped blocks into the transverse reinforcement anchor holes of the corresponding standard special-shaped blocks. The transverse reinforcing bar anchoring hole is a round hole structure, and the hole depth is not less than 100mm.

In an embodiment of the present invention, the vertical reinforcing bars are fixed at the middle position between two adjacent reinforcing ribs by means of temporary fixing buckles.

The construction method of the special-shaped block post-cast light retaining wall supporting structure of the present invention comprises the following steps:

Step 1: Bind the concrete foundation reinforcement and the vertical reinforcement in the reinforcement frame, and pour the foundation concrete;

Step 2: According to the section type of the cantilevered or buttressed retaining wall, build standard special-shaped blocks and end blocks on the ground floor to form a closed rectangular structure on the plane, and lay longitudinal steel bars and transverse steel bars at the corresponding positions according to the strength requirements;

Step 3: Repeat step 2, and build a closed box-shaped wall structure with upward staggered joints in turn, and construct the closed box-shaped wall structure to the design height; when the section type of the retaining wall is buttress type, it is also necessary to install the buttress The buttress plate of the retaining wall shall be sloped vertically;

Step 4: Curing the closed box wall structure to the design age, and pouring the inner concrete core in layers.

The present invention has the following beneficial effects:

(1) the special-shaped block post-cast light retaining wall supporting structure of the present invention does not need to use concrete formwork in the construction process, so that the concrete formwork consumption is reduced to 0, and the on-site coordination workload is significantly reduced;

(2) The vertical steel bars in the present invention are located in the open space and can be embedded in advance, avoiding the vertical steel bar insertion operation in the construction of the traditional reinforced concrete block retaining wall and the large-scale truncation of the vertical steel bars in this operation. The occurrence of the reinforced bar ensures the upper and lower connection of the stressed steel bar, and can give full play to the load-bearing performance of the vertical steel bar;

(3) The special-shaped block of the present invention is an open structure, and the horizontally arranged steel bars are located in the steel bar grooves reserved for the special-shaped block, so as to ensure the joint action of the horizontal force-bearing steel bars and the concrete hetero-shaped blocks, and the light retaining wall of the present invention is at the same time. The supporting structure meets the requirements of staggered joint masonry of concrete blocks up and down, which strengthens the anchoring connection between the block body, the stressed steel bar and the post-cast concrete;

(4) The present invention adopts special-shaped standard block masonry to form a closed box-type wall structure, the concrete core formed by post-casting concrete is a continuous structure, and the pouring and vibrating performance is better, and the post-cast light-weight earth retaining of the special-shaped block after construction is completed. The integrity of the wall support structure is close to that of the cast-in-place structure;

(5) The supporting structure of the present invention has the advantages of simple structure, convenient construction, good overall performance, huge engineering application prospect and outstanding cost performance. It has broad application space and popularization and application value in the construction of traffic engineering such as municipal roads.

Description of drawings

Fig. 1a is the three-dimensional structure schematic diagram of the standard special-shaped block in the present invention;

Fig. 1b is the top view of the standard special-shaped block in the present invention;

Fig. 1c is the side view of the standard special-shaped block in the present invention;

Figure 2a is a schematic top view of the structure of the end block formed by removing a reinforcing rib on the basis of the standard special-shaped block in the present invention;

Fig. 2b is a top-view structural schematic diagram of an end block formed by adding an end panel on the basis of half a standard special-shaped block in the present invention;

Figure 3a is a three-dimensional schematic diagram of the special-shaped block post-casting cantilever light retaining wall supporting structure of the present invention;

Figure 3b is a horizontal cross-sectional structural schematic diagram of the special-shaped block post-casting cantilever light retaining wall supporting structure of the present invention;

Fig. 3c is the longitudinal cross-sectional structural schematic diagram of the post-casting type cantilever light retaining wall supporting structure of the special-shaped block of the present invention;

Fig. 4 is a three-dimensional structural schematic diagram of the post-cast buttress light retaining wall supporting structure of the special-shaped block according to the present invention.

Reference number:

1-Standard shaped block; 1(a)-Block panel; 1(b)-Reinforcement rib; 1(c)-Longitudinal reinforcement groove; 1(d)-Transverse reinforcement groove; 1(e)-Transverse reinforcement anchor hole ; 2- end block; 2 (a)- end panel; 3- closed box wall structure; 4- steel frame; 4 (a)- longitudinal steel bar; 4 (b)- transverse steel bar; 4 (c) ) - vertical reinforcement; 5 - concrete core.

Detailed ways

The technical solutions of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figure 1a to Figure 4, a special-shaped block post-cast light retaining wall supporting structure of the present invention includes a standard special-shaped block 1, an end block 2, a steel skeleton 4 and an internal concrete core 5.

The cross section of the standard special-shaped block 1 is π-shaped, and includes a block panel 1(a) which is integrally cast and formed, and two reinforcing ribs 1(b) symmetrically and vertically arranged on the same side of the block panel 1(a). , and the upper surface of the block panel 1(a) and the upper surface of the reinforcing rib 1(b) are on the same level, and the lower surface of the block panel 1(a) and the lower surface of the reinforcing rib 1(b) The surface is also on the same level; the reinforcing rib 1(b) sinks at the connection with the block panel 1(a) to form a longitudinally through reinforcement groove 1(c), and the longitudinal reinforcement groove 1(c) Set along the horizontal direction; the upper surface of the reinforcing rib 1(b) is provided with a transverse reinforcement groove 1(d), and the extension line of the transverse reinforcement groove 1(d) corresponds to the corresponding reinforcement rib 1(b) and the block The connection surfaces of the body panel 1(a) are vertical and intersect; between the block panel 1(a) and the reinforcing rib 1(b), transverse reinforcement anchor holes 1(e) are arranged along the vertical direction, and the transverse reinforcement The extension line of the reinforcement anchor hole 1(e) is perpendicular to and intersects with the extension line of the corresponding transverse reinforcement groove 1(d); wherein, the depth of the longitudinal reinforcement groove 1(c) is not less than that of the transverse reinforcement groove 1(d) 2 times the depth of the groove; the transverse reinforcement hole 1(e) is a circular hole structure, and the hole depth is not less than 100mm.

The end block 2 is formed by removing a reinforcing rib 1(b) on the basis of the standard special-shaped block 1, or adding a block panel 1(a) along the vertical direction on the basis of half of the standard special-shaped block 1. ) The functional auxiliary blocks formed by the vertical end panels 2(a) are used to close the ends or corners of the box-type wall structure 3 to ensure the sealing of the closed box-type wall structure 3.

The reinforcing steel frame 4 includes longitudinal reinforcing bars 4(a), transverse reinforcing bars 4(b) and vertical reinforcing bars 4(c).

On the basis of the cast-in-place foundation anchoring, the standard special-shaped blocks 1 and the end blocks 2 are arranged according to the section form of the retaining wall to form a closed space, and are built up layer by layer according to the following overall principles to form a closed box wall structure 3 : The upper and lower layers of the standard special-shaped block 1 are staggered and overlapped, and each layer is composed of two opposite rows of standard special-shaped blocks 1. The two standard special-shaped blocks 1 set opposite each other in each layer are staggered and their reinforcing ribs 1 (b) are facing each other. Alignment, the reinforcing ribs 1 (b) on the upper and lower standard special-shaped blocks 1 are aligned with each other, and the ends or corners of the standard special-shaped blocks 1 on each layer are closed by the end blocks 2; during the masonry process, in the Reinforcing steel frame 4 is arranged inside the closed box-shaped wall structure 3, wherein: two longitudinal steel bars 4(a) are arranged in the longitudinal steel bar grooves 1(c) of a plurality of standard special-shaped blocks 1 masonry on the same side, and also A longitudinal reinforcing bar 4(a) is arranged in the transverse reinforcement groove 1(d) on the reinforcing rib 1(b) of the opposite end block 2; In the transverse reinforcement grooves 1(d) of the two left and right opposite reinforcing ribs 1(b) and the two ends are respectively inserted into the transverse reinforcement anchor holes 1(e) of the corresponding standard special-shaped blocks 1; the vertical reinforcement 4( c) Pre-set, fixed at the middle position between the two adjacent reinforcing ribs 1 (b) by temporary fixing buckles, and vertically penetrate the entire closed box-shaped wall structure 3, and connect with the cast-in-place foundation anchoring in the middle position. Concrete foundation reinforcement connection. The closed box-type wall structure 3 may be a cantilever type retaining wall structure or a buttress type retaining wall structure. After the masonry of the enclosed box-type wall structure 3 is completed, the curing age is not less than 7 days, and then the inner concrete core 5 is formed by post-pouring in the enclosed box-type wall structure 3 from bottom to top.

The construction method of the special-shaped block post-cast light retaining wall supporting structure of the present invention comprises the following steps:

Step 1: Bind the concrete foundation reinforcing bars and the vertical reinforcing bars 4(c) in the reinforcing bar frame 4, and pour the foundation concrete;

Step 2: According to the section type of the cantilevered or buttressed retaining wall, build the bottom standard special-shaped block 1 and the end block 2 to form a closed rectangular structure on the plane, and lay longitudinal steel bars 4 ( a) and transverse reinforcement 4(b);

Step 3: Repeat step 2, build up layer by layer according to the following overall principles to form a closed box-shaped wall structure 3, and construct the closed box-shaped wall structure 3 to the design height: Standard special-shaped block 1 upper and lower layers are staggered and overlapped , each layer is composed of two opposite rows of standard special-shaped blocks 1. The two standard special-shaped blocks 1 set opposite each other in each layer are staggered and their reinforcing ribs 1(b) are aligned with each other. Ribs 1 (b) are aligned with each other, and the ends or corners of standard special-shaped blocks 1 on each layer are closed by the end blocks 2; when the section type of the retaining wall is buttress type, it is also necessary to block the buttresses The buttress plate of the earth wall shall be sloped vertically;

Step 4: The closed box wall structure is maintained to the design age, and the concrete core is poured in layers.

Design, manufacture and implementation process of the special-shaped block post-cast light retaining wall supporting structure of the present invention:

As shown in Figures 1a, 1b and 1c, the design and manufacture of the standard special-shaped block 1 is made of fine stone concrete. First, the formwork structure of the standard special-shaped block is designed and completed. Fine stone concrete is poured into the standard special-shaped block formwork structure that has been designed and manufactured, and then cured for 2 to 3 days after vibration and compaction, and then cured for not less than 28 days to the design strength of the block; finally, the standard special-shaped block formed by pouring is: For open π-shaped blocks, the block body shall include block panel 1(a), reinforcing ribs 1(b), longitudinal reinforcement grooves 1(c), transverse reinforcement grooves 1(d) and transverse reinforcement anchor holes 1(e) ) five parts, among which, the groove depth of longitudinal reinforcement groove 1(c) shall not be less than twice the groove depth of transverse reinforcement groove 1(d), and the transverse reinforcement anchor hole 1(e) shall be a circular hole structure, and the hole depth shall not be less than 100mm. In addition, through the transformation of the standard special-shaped block mold, as shown in Figures 2a and 2b, the pouring and forming of the end block 2 can be realized, and the standard special-shaped block 1 can be matched with each other to ensure the plane of the closed box-shaped wall structure. closedness.

As shown in Figures 3a, 3b, and 3c, the design and manufacture of the post-cast cantilever light retaining wall with special-shaped blocks should firstly level the site, vibrate the foundation of the retaining wall, bind the concrete foundation steel bars and the vertical steel bars in the steel frame. 4(c), pouring the foundation concrete, curing the foundation concrete, and the age is not less than 7 days; after that, the masonry and laying of the first layer of the cantilever retaining wall shall be carried out, and the protective closed box wall structure shall be carried out according to the following overall principles 3. Masonry: Standard special-shaped blocks 1 are staggered and overlapped on the upper and lower layers. Each layer is composed of two opposite rows of standard special-shaped blocks 1. The two standard special-shaped blocks 1 set opposite each other in each layer are staggered and their reinforcing ribs 1. (b) Aligned towards each other, the reinforcing ribs 1 (b) on the upper and lower standard special-shaped blocks 1 are aligned with each other, and the ends or corners of each layer of standard special-shaped blocks 1 are closed by the end blocks 2; masonry During the process, the pre-embedded vertical reinforcement 4(c) is fixed to the middle position of the adjacent reinforcement rib 1(b) by the temporary fixing buckle, and the longitudinal reinforcement 4(c) is laid in the longitudinal reinforcement groove 1(c) according to the design requirements. a), lay transverse reinforcement 4(b) in transverse reinforcement groove 1(d), and insert both ends of transverse reinforcement 4(b) into transverse reinforcement anchor holes 1(e) to form an integral reinforcement skeleton 4; then, Repeat the above process, build up the staggered joints up to the design height in turn, and maintain the wall for not less than 7 days. Finally, the inner concrete core 5 is poured in layers in the closed box wall structure 3, and after vibrating and compacting, curing. to the design age.

As shown in Figure 4, the design and manufacture of the post-cast buttress light retaining wall with special-shaped blocks, the masonry of the closed box wall structure 3, the erection of the steel skeleton 4, and the pouring of the internal concrete core 5 are the same as the design and manufacture process. The above-mentioned special-shaped block post-cast cantilever light retaining wall is the same, only the design and manufacture of the buttress wall is added. In the design and manufacture of the buttress wall, the lap joint between the buttress wall and the wall panel must be dealt with to ensure the effective transition and lap joint between the buttress wall of the buttress retaining wall and the special-shaped block masonry of the wall panel; in addition , The buttress wall in the post-cast buttress light retaining wall of the special-shaped block is stepped down along the direction of the wall height.

To sum up, compared with the traditional retaining wall, the construction method of the special-shaped block post-cast light retaining wall supporting structure of the present invention has achieved a lot of innovations in the block structure form, the pouring method of pouring concrete, the anchoring method of steel bars, etc. , which can ensure that the vertical steel bars are connected up and down without being cut off and lapped on a large scale. The post-pouring concrete core is a continuous structure, and the pouring and vibration performance is better. The integrity of the protective structure is close to that of the cast-in-place structure. As a form of retaining wall supporting structure for roadbed engineering, the new structure has simpler structure, more convenient construction, huge engineering application prospects and outstanding cost performance. It meets the actual needs of various traffic engineering constructions in my country, and has a high level of innovation and engineering promotion and application value.

The specific embodiments of the present invention have been described in detail above, but the above contents are only preferred embodiments of the present invention, and cannot be considered to limit the implementation scope of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still belong to the scope of the patent of the present invention.

Claims (10)

1. The utility model provides a light-duty retaining wall supporting construction of abnormal shape piece post-cast, its characterized in that: the concrete core comprises a standard special-shaped block (1), an end building block (2), a steel reinforcement framework (4) and an internal concrete core body (5);

the cross section of the standard special-shaped block (1) is pi-shaped, the standard special-shaped block comprises a block panel (1(a)) formed by integral casting and two reinforcing ribs (1(b)) symmetrically and vertically arranged on the same side of the block panel (1(a)), the upper surface of the block panel (1(a)) and the upper surface of each reinforcing rib (1(b)) are on the same horizontal plane, and the lower surface of the block panel (1(a)) and the lower surface of each reinforcing rib (1(b)) are also on the same horizontal plane; the reinforcing ribs (1(b)) sink at the joints with the block panels (1(a)) to form longitudinal through reinforcement slots (1(c)), and the longitudinal reinforcement slots (1(c)) are arranged along the horizontal direction; the upper surface of the reinforcing rib (1(b)) is provided with a transverse reinforcing rib groove (1(d)), and the extension line of the transverse reinforcing rib groove (1(d)) is perpendicular to and intersected with the connecting surface of the corresponding reinforcing rib (1(b)) and the block panel (1 (a));

the steel bar framework (4) comprises longitudinal steel bars (4(a)), transverse steel bars (4(b)) and vertical steel bars (4 (c));

on the basis of anchoring of a cast-in-place foundation, the standard special-shaped blocks (1) and the end building blocks (2) are arranged according to the cross section form of a retaining wall to form a closed space, and are built upwards layer by layer according to the following overall principle to form a closed box-shaped wall structure (3): the upper layer and the lower layer of the standard special-shaped blocks (1) are in staggered joint and overlapped, each layer is composed of two opposite rows of standard special-shaped blocks (1), two standard special-shaped blocks (1) which are oppositely arranged in each layer are staggered, reinforcing ribs (1(b)) of the two standard special-shaped blocks are aligned oppositely, the reinforcing ribs (1(b)) on the upper layer and the lower layer of the standard special-shaped blocks (1) are aligned mutually, and the end head or the angular point of each layer of the standard special-shaped blocks (1) is sealed by the end head building block (2);

in the masonry process, a steel bar framework (4) is arranged inside the closed box-type wall structure (3), wherein the longitudinal steel bars (4(a)) are arranged in longitudinal steel bar grooves (1(c)) of the standard special-shaped blocks (1) which are laid on the same side, the transverse steel bars (4(b)) are arranged in transverse steel bar grooves (1(d)) of two reinforcing ribs (1(b)) which are opposite left and right, and the vertical steel bars (4(c)) are arranged in advance in the gap position between the two adjacent reinforcing ribs (1(b)) and vertically penetrate through the whole closed box-type wall structure (3) and are connected with concrete foundation steel bars in cast-in-situ foundation anchoring; after the masonry is finished, the closed box-type wall structure (3) is maintained to the design age, and then an internal concrete core (5) is formed in the closed box-type wall structure (3) in a post-pouring mode in a layered pouring mode from bottom to top.

2. A profiled block post-cast light retaining wall supporting structure according to claim 1, wherein: the end block (2) is a functional auxiliary block formed by removing a reinforcing rib (1(b)) on the basis of a standard profile block (1) or adding an end panel (2(a)) perpendicular to a block panel (1(a)) in the vertical direction on the basis of a half of the standard profile block (1), and the reinforcement cage (4) further comprises a longitudinal reinforcement (4(a)) arranged in a transverse reinforcement groove (1(d)) on the reinforcing rib (1(b)) of the opposite end block (2).

3. A profiled block post-cast light retaining wall supporting structure according to claim 1, wherein: the standard special-shaped block (1) further comprises two transverse reinforcing steel bar anchoring holes (1(e)) which are respectively arranged between the block body panel (1(a)) and the reinforcing rib (1(b)) along the vertical direction; the transverse steel bar (4(b)) is in an inverted U shape, and two ends of the transverse steel bar (4(b)) are respectively inserted into the transverse steel bar anchoring holes (1(e)) of the corresponding standard special-shaped blocks (1).

4. A heterogeneous block post-cast light retaining wall supporting structure according to claim 3, wherein: the transverse steel bar anchoring hole (1(e)) is of a round hole structure, and the hole depth is not less than 100 mm.

5. A profiled block post-cast light retaining wall supporting structure according to claim 1, wherein: the groove depth of the longitudinal bar groove (1(c)) is not less than 2 times of the groove depth of the transverse bar groove (1 (d)).

6. A profiled block post-cast light retaining wall supporting structure according to claim 1, wherein: the vertical reinforcing steel bars (4(c)) are fixed at the middle position between two adjacent reinforcing ribs (1(b)) through temporary fixing buckles.

7. A profiled block post-cast light retaining wall supporting structure according to claim 1, wherein: the closed box-type wall body structure (3) is a cantilever type retaining wall structure or a counterfort type retaining wall structure.

8. A profiled block post-cast light retaining wall supporting structure according to claim 1, wherein: and after the closed box-type wall body structure (3) is built, the maintenance age is not less than 7 days.

9. A construction method of a profiled block post-cast light retaining wall supporting structure of any one of claims 1 to 8, comprising the steps of:

step 1: binding concrete foundation reinforcing steel bars and vertical reinforcing steel bars (4(c)) in the reinforcing steel bar framework (4), and pouring foundation concrete;

step 2: building a bottom layer standard special-shaped block (1) and an end block (2) according to the section type of the cantilever type or counterfort type retaining wall, forming a closed rectangular structure on a plane, and paving a longitudinal steel bar (4(a)) and a transverse steel bar (4(b)) at corresponding positions according to the strength requirement;

and step 3: repeating the step 2, sequentially carrying out upward staggered joint masonry to form a closed box-type wall structure (3), and constructing the closed box-type wall structure (3) to a design height;

and 4, step 4: and (5) maintaining the closed box-type wall body structure (3) to the design age, and pouring the internal concrete core (5) layer by layer.

10. A construction method of a support structure of a profiled block post-cast light retaining wall as claimed in claim 9, wherein: in step 3, when the section type of the retaining wall is a buttress type, the buttress plate of the buttress type retaining wall needs to be vertically retracted.

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