CN111335355A - Special-shaped block post-pouring type light retaining wall supporting structure and construction method thereof - Google Patents
Special-shaped block post-pouring type light retaining wall supporting structure and construction method thereof Download PDFInfo
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- CN111335355A CN111335355A CN202010260167.7A CN202010260167A CN111335355A CN 111335355 A CN111335355 A CN 111335355A CN 202010260167 A CN202010260167 A CN 202010260167A CN 111335355 A CN111335355 A CN 111335355A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0258—Retaining or protecting walls characterised by constructional features
- E02D29/0283—Retaining or protecting walls characterised by constructional features of mixed type
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
Technical Field
The invention belongs to the field of roadbed engineering supporting structures, and particularly relates to a special-shaped block post-cast type light retaining wall supporting structure and a construction method thereof.
Background
The retaining wall is a supporting and retaining structure for supporting roadbed filling, natural side slopes, channel bay revetments, landscape walls, hillside soil bodies and the like, and mainly plays a role in preventing the filling or the soil bodies from deforming and destabilizing. Among them, the gravity retaining wall and the light retaining wall are the most commonly used retaining wall structures in China. The traditional light retaining wall mainly comprises cantilever type and counterfort type structures, and mainly adopts a cast-in-place concrete construction process, and because the operation of template erection and template removal needs to be repeatedly carried out in the wall pouring project, large-scale template turnover is needed, and the site coordination workload is large.
The reinforced concrete building block structure is a novel structure which is developed in recent years and widely applied, is widely applied to the fields of buildings, municipal roads, park landscapes and the like, and almost has the same working performance with a cast-in-place structure under the condition of selecting reasonable reinforcement and concrete building materials. Most of traditional concrete blocks are closed, and after the wall is built, vertical stressed steel bars need to be inserted, so that the vertical stressed steel bars are easy to cut off on a large scale at the same cross section position, and the overall working performance of the wall structure is seriously affected. In addition, the concrete block retaining wall generally needs to be grouted after being built, but because the hole of the concrete block is relatively small, the grouted concrete is relatively difficult to vibrate. In addition, the horizontal reinforcing steel bars of the traditional reinforced concrete block retaining wall are generally arranged in mortar joints, the anchoring effect of the horizontal reinforcing steel bars is mainly determined by masonry bonding materials of masonry structures, the mechanical property of the horizontal reinforcing steel bars is obviously unfavorable to full play, and the masonry performance of the concrete blocks can be further reduced by arranging horizontal stressed reinforcing steel bars in the mortar joints.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a special-shaped block post-cast type light retaining wall supporting structure with simple structure, convenient construction and reliable stress and a construction method thereof.
The technical purpose of the invention is realized by the following technical scheme.
A 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 the standard special-shaped block comprises a block panel which is integrally cast and formed, and two reinforcing ribs which are symmetrically and vertically arranged on the same side of the block panel, wherein the upper surface of the block panel and the upper surfaces of the reinforcing ribs are on the same horizontal plane, and the lower surface of the block panel and the lower surfaces of the reinforcing ribs are also on the same horizontal plane; the reinforcing rib sinks at the joint of the reinforcing rib and the block panel to form a longitudinal through reinforcing steel bar groove, and the longitudinal reinforcing steel bar groove is arranged along the horizontal direction; the upper surface of the reinforcing rib is provided with a transverse reinforcing bar groove, and the extension line of the transverse reinforcing bar groove is perpendicular to and intersected with the connecting surface of the corresponding reinforcing rib and the block panel. Preferably, the groove depth of the longitudinal tendon groove is not less than 2 times the groove depth of the transverse tendon groove.
The steel bar framework comprises longitudinal steel bars, transverse steel bars and vertical steel bars.
On the basis of anchoring of a cast-in-place foundation, the standard special-shaped blocks and the end building blocks are arranged according to the cross section form of a retaining wall to form a closed space, and the closed box-type wall body structure is built layer by layer upwards according to the following overall principle: the upper layer and the lower layer of the standard special-shaped blocks are in staggered lap joint, each layer consists of two opposite rows of standard special-shaped blocks, two opposite standard special-shaped blocks in each layer are staggered, reinforcing ribs of the two opposite standard special-shaped blocks are aligned in opposite directions, and the reinforcing ribs on the upper layer and the lower layer of the standard special-shaped blocks are aligned in opposite directions; the end or the angular point of each layer of standard special-shaped blocks is sealed by the end building blocks so as to ensure the sealing performance of the sealed box-type wall structure.
In the building process, a steel bar framework is arranged inside the closed box-type wall structure, wherein the longitudinal steel bars are arranged in longitudinal steel bar grooves of a plurality of standard special-shaped blocks built on the same side, the transverse steel bars are arranged in transverse steel bar grooves of two reinforcing ribs which are opposite left and right, and the vertical steel bars are arranged in a gap position between the two adjacent reinforcing ribs in advance, vertically penetrate through the whole closed box-type wall structure and are connected with concrete foundation steel bars in the cast-in-situ foundation anchoring. The closed box-type wall structure can be a cantilever type retaining wall structure or a counterfort type retaining wall structure. After the closed box-type wall structure is built, the curing age is not less than 7 days, and then an internal concrete core is formed by layered pouring from bottom to top in the closed box-type wall structure in a post-pouring mode.
In one embodiment of the present invention, the end blocks are functional auxiliary blocks formed by removing a reinforcing rib from a standard profile block or adding an end panel perpendicular to a block panel to a half of the standard profile block in a vertical direction, and the reinforcing cage further includes a longitudinal bar disposed in a transverse bar groove formed in the reinforcing rib of the opposite end block.
In one embodiment of the invention, the standard special-shaped block further comprises two transverse reinforcing steel bar anchoring holes which are respectively arranged between the block body panel and the reinforcing rib along the vertical direction; the transverse reinforcing steel bar is in an inverted U shape, and two ends of the transverse reinforcing steel bar are respectively inserted into the transverse reinforcing steel bar anchoring holes of the corresponding standard special-shaped blocks. The transverse steel bar anchoring hole is of a round hole structure, and the hole depth is not less than 100 mm.
In one embodiment of the invention, the vertical reinforcing bars are fixed at the middle position between two adjacent reinforcing ribs by a temporary fixing buckle.
The construction method of the special-shaped block post-cast type light retaining wall supporting structure comprises the following steps:
step 1: binding concrete foundation reinforcing steel bars and vertical reinforcing steel bars in the reinforcing steel bar framework, and pouring foundation concrete;
step 2: building bottom standard special-shaped blocks and end building blocks according to the section type of the cantilever type or counterfort type retaining wall, forming a closed rectangular structure on a plane, and paving longitudinal steel bars and transverse steel bars at corresponding positions according to strength requirements;
and step 3: repeating the step 2, sequentially carrying out upward staggered joint masonry to form a closed box-type wall structure, and constructing the closed box-type wall structure to a design height; when the section type of the retaining wall is a buttress type, a buttress plate of the buttress type retaining wall needs to be vertically contracted;
and 4, step 4: and (5) maintaining the closed box-type wall structure to the design age, and pouring the internal concrete core body in layers.
The invention has the following beneficial effects:
(1) the special-shaped block post-cast light retaining wall supporting structure does not need a concrete template in the construction process, so that the using amount of the concrete template is reduced to 0, and the field coordination workload is obviously reduced;
(2) the vertical reinforcing steel bars are positioned in the opening space positions and can be embedded in advance, the vertical reinforcing steel bar inserting operation in the construction of the conventional reinforced concrete block retaining wall and the large-scale cutting of the vertical reinforcing steel bars in the operation are avoided, the up-and-down communication of the stressed reinforcing steel bars is ensured, and the stress bearing performance of the vertical reinforcing steel bars can be fully exerted;
(3) the special-shaped block is of an open structure, the steel bars horizontally arranged are positioned in the steel bar grooves reserved in the special-shaped block, the combined action of the horizontal stressed steel bars and the concrete special-shaped block is guaranteed, meanwhile, the light retaining wall supporting structure meets the requirement of up-and-down staggered joint building of concrete blocks, and the anchoring connection among the building blocks, the stressed steel bars and post-cast concrete is enhanced;
(4) the invention adopts the special-shaped standard blocks to build a closed box-type wall body structure, the concrete core formed by post-pouring concrete is a continuous structure, the pouring and vibrating performance is better, and the integrity of the post-pouring type light retaining wall supporting structure of the special-shaped blocks after construction is close to that of a cast-in-place structure;
(5) the supporting structure has the advantages of simple structure, convenient construction, better overall performance, huge engineering application prospect and outstanding cost performance, is a key optimization and improvement direction of the retaining wall supporting structure of the soil-filled subgrade, and has wide application space and popularization and application values in the construction of traffic engineering such as railways, highways, municipal roads and the like.
Drawings
FIG. 1a is a schematic perspective view of a standard profile block according to the present invention;
FIG. 1b is a top view of a master pattern block of the present invention;
FIG. 1c is a side view of a master pattern block of the present invention;
FIG. 2a is a schematic top view of the end block of the present invention without a reinforcing rib on the basis of the standard profile block;
FIG. 2b is a schematic top view of the end block formed by adding an end panel to a half of the standard profile block according to the present invention;
FIG. 3a is a schematic perspective view of the supporting structure of the heterogeneous block post-cast cantilever light retaining wall of the present invention;
FIG. 3b is a schematic view of the horizontal section of the supporting structure of the heterogeneous block post-cast cantilever light retaining wall of the present invention;
fig. 3c is a schematic longitudinal sectional view of the supporting structure of the heterogeneous block post-cast cantilever light retaining wall of the present invention;
fig. 4 is a schematic perspective view of the supporting structure of the lightweight retaining wall of the heterogeneous block post-cast buttress of the present invention.
Reference numerals:
1-standard special-shaped block; 1(a) -a block panel; 1(b) -stiffener ribs; 1(c) -longitudinal tendon ducts; 1(d) -transverse reinforcement grooves; 1(e) -transverse reinforcement anchorage holes; 2-end building blocks; 2(a) -end panel; 3-sealing the box-type wall structure; 4-a steel reinforcement framework; 4(a) -longitudinal rebar; 4(b) -transverse rebar; 4(c) -vertical rebar; 5-concrete core.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1a to 4, the supporting structure of the special-shaped block post-cast type light retaining wall of the present invention comprises a standard special-shaped block 1, an end block 2, a steel reinforcement cage 4 and an inner concrete core 5.
The cross section of the standard special-shaped block 1 is pi-shaped and 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 the reinforcing ribs 1(b) are on the same horizontal plane, and the lower surface of the block panel 1(a) and the lower surface of the reinforcing ribs 1(b) are also on the same horizontal plane; the reinforcing rib 1(b) sinks at the joint of the block panel 1(a) to form a longitudinal through reinforcing bar groove 1(c), and the longitudinal reinforcing bar groove 1(c) is 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 vertical to and intersected with the connecting surface of the corresponding reinforcing rib 1(b) and the block panel 1 (a); a transverse reinforcing steel bar anchoring hole 1(e) is formed between the block panel 1(a) and the reinforcing rib 1(b) along the vertical direction, and the extension line of the transverse reinforcing steel bar anchoring hole 1(e) is perpendicular to and intersected with the extension line of the corresponding transverse reinforcing steel bar groove 1 (d); wherein, the groove depth of the longitudinal reinforcement groove 1(c) is not less than 2 times of the groove depth of the transverse reinforcement groove 1 (d); the transverse steel bar anchoring hole 1(e) is of a round hole structure, and the hole depth is not less than 100 mm.
The end building block 2 is a functional auxiliary building block formed by removing a reinforcing rib 1(b) on the basis of the standard special-shaped block 1 or additionally arranging an end panel 2(a) vertical to the block panel 1(a) on the basis of a half standard special-shaped block 1 along the vertical direction, and is used for sealing the end or angular point of the box-shaped wall structure 3 so as to ensure the sealing property of the box-shaped wall structure 3.
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 body structure 3: the upper layer and the lower layer of the standard special-shaped blocks 1 are in staggered joint overlapping, 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 standard special-shaped blocks are aligned in opposite directions, the reinforcing ribs 1(b) on the upper layer and the lower layer of the standard special-shaped blocks 1 are aligned with each other, and the end head or the angular point of each layer of the standard special-shaped blocks 1 is sealed by an end head building block 2; in the masonry process, the steel reinforcement framework 4 is arranged inside the closed box-type 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 built on the same side, and a longitudinal steel bar 4(a) is arranged in the transverse steel bar groove 1(d) on the reinforcing rib 1(b) of the opposite end building block 2; the transverse reinforcing steel bars 4(b) are inverted U-shaped and are arranged in transverse reinforcing steel bar grooves 1(d) of the two reinforcing ribs 1(b) which are opposite left and right, and two ends of the transverse reinforcing steel bars are respectively inserted into transverse reinforcing steel bar anchoring holes 1(e) of the corresponding standard special-shaped blocks 1; the vertical steel bars 4(c) are arranged in advance, fixed in the middle between the two adjacent reinforcing ribs 1(b) through temporary fixing buckles, vertically penetrate through the whole closed box-type wall structure 3 and are connected with concrete foundation steel bars in the cast-in-place foundation anchoring. The closed box-type wall structure 3 can be a cantilever type retaining wall structure or a counterfort type retaining wall structure. After the closed box-type wall structure 3 is built, the curing age is not less than 7 days, and then the inner concrete core body 5 is formed in the closed box-type wall structure 3 in a post-pouring mode through layered pouring from bottom to top.
The invention relates to a construction method of a special-shaped block post-cast type light retaining wall supporting structure, which comprises the following steps:
step 1: binding concrete foundation steel bars and vertical steel bars 4(c) in the steel bar framework 4, and pouring foundation concrete;
step 2: building a bottom layer standard special-shaped block 1 and an end building 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 reinforcing steel bar 4(a) and a transverse reinforcing steel bar 4(b) at corresponding positions according to strength requirements;
and step 3: repeating the step 2, building upwards layer by layer according to the following overall principle to form a closed box-type wall structure 3, and constructing the closed box-type wall structure 3 to the design height: the upper layer and the lower layer of the standard special-shaped blocks 1 are in staggered joint overlapping, 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 standard special-shaped blocks are aligned in opposite directions, the reinforcing ribs 1(b) on the upper layer and the lower layer of the standard special-shaped blocks 1 are aligned with each other, and the end head or the angular point of each layer of the standard special-shaped blocks 1 is sealed by an end head building block 2; when the section type of the retaining wall is a buttress type, a buttress plate of the buttress retaining wall needs to be vertically contracted;
and 4, step 4: and (5) maintaining the closed box-type wall structure to the design age, and pouring the concrete core body layer by layer.
The invention relates to a special-shaped block post-pouring type light retaining wall supporting structure, which comprises the following design, manufacturing and implementation processes:
as shown in fig. 1a, 1b and 1c, the design and manufacture of the standard special-shaped block 1 adopts fine stone concrete pouring and forming, firstly, a template structure of the standard special-shaped block is designed and completed, and the template structure can adopt a steel mould coated with a release agent; secondly, pouring fine stone concrete in the designed and manufactured standard special-shaped block template structure, curing for 2-3 days after vibration compaction, demolding, and continuously curing for no less than 28 days until the designed strength of the block is reached; finally, the cast standard special-shaped block is an open pi-shaped block, and the block body should comprise five parts, namely a block panel 1(a), a reinforcing rib 1(b), a longitudinal reinforcement groove 1(c), a transverse reinforcement groove 1(d) and a transverse reinforcement anchoring hole 1(e), wherein the groove depth of the longitudinal reinforcement groove 1(c) should not be less than 2 times of the groove depth of the transverse reinforcement groove 1(d), the transverse reinforcement anchoring hole 1(e) is of a circular hole structure, and the hole depth is not less than 100 mm. In addition, by modifying the standard special-shaped block die, as shown in fig. 2a and 2b, the end building blocks 2 can be poured and formed, and are matched with the standard special-shaped blocks 1 for building, so that the plane sealing performance of the closed box-type wall body structure is ensured.
As shown in fig. 3a, 3b and 3c, the special-shaped block post-cast cantilever light retaining wall is designed and manufactured by firstly leveling a field, vibrating and tamping a retaining wall foundation, binding concrete foundation reinforcements and vertical reinforcements 4(c) in a reinforcement framework, pouring foundation concrete, and curing the foundation concrete for not less than 7 days; then, the first layer of building blocks of the cantilever type retaining wall are laid, and the protective sealing box type wall structure 3 is laid according to the following overall principle: the upper layer and the lower layer of the standard special-shaped blocks 1 are in staggered joint overlapping, 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 standard special-shaped blocks are aligned in opposite directions, the reinforcing ribs 1(b) on the upper layer and the lower layer of the standard special-shaped blocks 1 are aligned with each other, and the end head or the angular point of each layer of the standard special-shaped blocks 1 is sealed by an end head building block 2; in the masonry process, pre-buried vertical steel bars 4(c) are fixed in the middle of adjacent reinforcing ribs 1(b) through temporary fixing buckles, longitudinal steel bars 4(a) and transverse steel bars 4(b) are laid in the longitudinal steel bar grooves 1(c) and the transverse steel bar grooves 1(d) according to design requirements, and two ends of the transverse steel bars 4(b) are inserted into the transverse steel bar anchoring holes 1(e) to form an integral steel bar framework 4; and then, repeating the processes, sequentially carrying out upward staggered joint masonry to the designed height, maintaining the wall body age to be not less than 7 days, finally, pouring the inner concrete core body 5 in the closed box-type wall body structure 3 in a layered mode, vibrating and compacting, and maintaining to the designed age.
As shown in fig. 4, the design and manufacturing processes of the special-shaped block post-cast buttress light retaining wall, such as the building of the closed box-shaped wall structure 3, the erection of the steel reinforcement framework 4, the pouring of the internal concrete core 5 and the like, are the same as those of the special-shaped block post-cast cantilever light retaining wall, and only the design and manufacturing of the buttress wall is added. In the design and manufacture of the buttress wall, the overlapping of building blocks between the buttress wall and the wall panel is required to be processed, so that the effective transition and the overlapping of the buttress wall of the buttress retaining wall and the profiled block masonry of the wall panel are ensured; in addition, the buttress wall in the special-shaped block post-cast buttress light retaining wall is subjected to stepped slope shrinkage along the wall height direction.
In summary, compared with the traditional retaining wall, the construction method of the special-shaped block post-cast light retaining wall support structure has the advantages that a great deal of innovation is completed in the aspects of building block structural form, pouring hole concrete pouring mode, reinforcing steel bar anchoring mode and the like, the vertical reinforcing steel bars can be guaranteed to be connected up and down without being cut off and overlapped on a large scale, the post-cast concrete core is of a continuous structure, the pouring and vibrating performance is better, and the integrity of the constructed special-shaped block post-cast light retaining wall support structure is close to that of a cast-in-place structure. As a roadbed engineering retaining wall supporting structure form, the novel structure is simpler, construction is more convenient, the engineering application prospect is huge, the cost performance is outstanding, the novel structure is a key optimization improvement direction of a road-filling roadbed retaining wall supporting structure, the actual requirements of various traffic engineering construction in China are met, and the novel structure has higher innovation level and engineering popularization and application value.
While specific embodiments of the present invention have been described in detail, the description is merely illustrative of the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794270A (en) * | 2020-07-28 | 2020-10-20 | 中国铁路设计集团有限公司 | Prefabricated lattice box retaining wall of assembling of inside formula of filling |
| CN112593527A (en) * | 2020-12-04 | 2021-04-02 | 沈徐彬 | Hydraulic engineering cantilever ecological hydraulic retaining wall structure |
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2020
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111794270A (en) * | 2020-07-28 | 2020-10-20 | 中国铁路设计集团有限公司 | Prefabricated lattice box retaining wall of assembling of inside formula of filling |
| CN111794270B (en) * | 2020-07-28 | 2023-08-08 | 中国铁路设计集团有限公司 | Internal filling type prefabricated assembled lattice box-type retaining wall |
| CN112593527A (en) * | 2020-12-04 | 2021-04-02 | 沈徐彬 | Hydraulic engineering cantilever ecological hydraulic retaining wall structure |
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