CN117144894A - Reinforced concrete underground diaphragm wall and construction method thereof - Google Patents
Reinforced concrete underground diaphragm wall and construction method thereof Download PDFInfo
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- CN117144894A CN117144894A CN202311206750.XA CN202311206750A CN117144894A CN 117144894 A CN117144894 A CN 117144894A CN 202311206750 A CN202311206750 A CN 202311206750A CN 117144894 A CN117144894 A CN 117144894A
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- joint
- underground diaphragm
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 30
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 230000002787 reinforcement Effects 0.000 claims abstract description 49
- 238000012545 processing Methods 0.000 claims abstract description 15
- 239000004567 concrete Substances 0.000 claims abstract description 10
- 210000001503 joint Anatomy 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000009412 basement excavation Methods 0.000 claims description 5
- 210000002435 tendon Anatomy 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 16
- 238000004804 winding Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- 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
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a reinforced concrete underground diaphragm wall, which comprises a plurality of rigid joints, wherein adjacent rigid joints are mutually buckled and locked, and concrete is poured in sections to form a complete rigid underground diaphragm wall body; the invention designs and forms a specific interlocking structure used on the reinforcement cage body through reasonable processing of fewer steel members, and is connected with the transverse stress reinforcement, so that equivalent stress and moment transmission of the reinforcement cage from the transverse reinforcement at the joint can be realized, the underground diaphragm wall body with complete rigidity can be truly realized, the joint quality of the underground diaphragm wall can be better improved, the joint durability of the engineering can be obviously improved, the running cost of the post-stage underground diaphragm wall enclosure structure can be reduced, and investment construction can be saved, and carbon emission can be reduced.
Description
Technical Field
The invention relates to the technical fields of municipal administration, environment and harbor engineering, in particular to a reinforced concrete underground diaphragm wall and a construction method thereof.
Background
The reinforced concrete underground diaphragm wall is widely used in the field of municipal, maritime, hydroelectric and traffic underground enclosure and support structure engineering in China; the reinforced concrete underground diaphragm wall joint is divided into a rigid joint and a flexible joint according to a construction method, the rigid joint can bear larger horizontal and vertical tensile shear stress, the integral rigidity of the wall body is higher, and the seepage-proofing performance of the rigid joint is better than that of other joint forms; the rigid joints of the reinforcement cage body such as cross steel plate joints, I-steel joints and the like which are common at present all relate to a large number of steel plates or section steel for use and welding operation, the reinforced structure continuous connection is lacking between the first-stage concrete and the second-stage concrete after solidification and forming, and the joint brushing is difficult to reach the standard, so that the water leakage defect is easy to occur at the joint between the first stage and the second stage, and larger tensile resistance and shearing force are difficult to transfer between the first stage and the second stage.
Disclosure of Invention
In view of the above, the invention provides a reinforced concrete underground diaphragm wall and a construction method thereof, which aim to improve the joint quality problem commonly occurring in the current underground deep foundation pit or underground space enclosing structure and remarkably improve the integral function of the reinforced concrete underground diaphragm wall; the method lays a better foundation for designing the reinforced concrete underground continuous wall as a permanent structure of an underground space; the safety and the service life of the underground space are greatly improved.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a reinforced concrete underground diaphragm wall comprises a plurality of rigid joints, wherein adjacent rigid joints are mutually buckled and locked, and concrete is poured in sections to form a complete rigid underground diaphragm wall body.
Preferably, the rigid joint comprises a reinforcement cage, a locking piece A and a locking piece B;
the two sides of the reinforcement cage are provided with stressed tendons;
the locking piece A is welded with a stressed rib on one side of the reinforcement cage;
the locking piece B is welded with a stressed rib on the other side of the reinforcement cage;
the lock catch piece A and the lock catch piece B can be mutually buckled and locked.
Preferably, the latch member a includes a latch bar and a connecting plate, the latch bar includes an L-shaped latch connector and a latch hook bent toward the L-shaped latch connector, and the connecting plate is connected to one end of a riser of the L-shaped latch connector, which is far away from the transverse plate.
Preferably, the locking piece B comprises a locking strip and a connecting plate, wherein the locking strip comprises an L-shaped locking connecting piece and a locking hook which faces to the bending of the L-shaped locking connecting piece, and the connecting plate is connected to one end, close to the transverse plate, of the vertical plate of the L-shaped locking connecting piece.
Preferably, the number of the locking pieces A is two, and the two locking pieces A are respectively fixed on the upper and lower stress ribs on one side of the reinforcement cage; the number of the locking pieces B is two, and the two locking pieces B are respectively fixed on the upper and lower stressed bars on the other side of the reinforcement cage.
Preferably, the anti-winding galvanized plate further comprises a plurality of anti-winding galvanized plates, and the anti-winding galvanized plates are respectively connected with the locking piece A and the locking piece B.
The invention also provides a construction method for constructing the reinforced concrete underground continuous wall, which comprises the following steps:
s1, processing a plurality of rigid joints, and excavating to complete underground diaphragm wall slotted holes after preparing guide walls;
s2, after the slotted holes are cleared, setting a rigid joint processed in the step S1, and setting special joint plates at two sides of the rigid joint respectively;
s3, pouring the first-order underground continuous wall trough section under the slurry by adopting a guide pipe;
s4, excavating from the far end of the subsequent groove section until the whole excavation process is completed;
s5, lifting the special joint plate in the hole cleaning process, measuring in the hole and completing hole cleaning;
s6, a subsequent rigid joint is arranged below and locked with the preceding rigid joint through a locking piece, and a special joint plate is arranged below one side of the subsequent rigid joint, which is far away from the preceding rigid joint;
and S7, pouring the subsequent groove sections, and repeating the steps S4-S6 to complete the construction of the rigid reinforced concrete underground continuous wall.
Preferably, the special joint plate comprises a main web plate, an internal connecting plate, a thick-wall steel pipe and an internal convex web plate;
the main web plate is of a groove structure, and two side walls of the main web plate are side plates with hooks;
the number of the internal connecting plates is two, and the two internal connecting plates are positioned at the inner side of the main web and respectively abutted with the two hooked side plates;
the thick-wall steel pipe is clamped between the two internal connecting plates;
the inner convex web plate comprises a main plate and two side plates, wherein the main plate is in butt joint with the thick-wall steel pipe, the two side plates are positioned at two ends of the main plate and are respectively fixed with the two inner connecting plates.
Preferably, the device further comprises a current limiting strip, wherein the current limiting strip is fixed on the internal connecting plate.
Compared with the prior art, the invention discloses a reinforcement cage body for constructing a reinforced concrete underground diaphragm wall and a construction method thereof, and has the following beneficial effects:
the invention designs and forms a specific interlocking structure used on the reinforcement cage body through reasonable processing of fewer steel members, and is connected with the transverse stress reinforcement, so that equivalent stress and moment transmission of the reinforcement cage from the transverse reinforcement at the joint can be realized, the underground diaphragm wall body with complete rigidity can be truly realized, the joint quality of the underground diaphragm wall can be better improved, the joint durability of the engineering can be obviously improved, the running cost of the post-stage underground diaphragm wall enclosure structure can be reduced, and investment construction can be saved, and carbon emission can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a latch A according to the present invention;
FIG. 2 is a schematic diagram of a latch B according to the present invention;
FIG. 3 is a schematic diagram showing a structure of a locking member A and a locking member B according to the present invention;
FIG. 4 is a schematic view of the overall structure of the rigid joint according to the present invention;
FIG. 5 is a schematic view of a dedicated connector board structure according to the present invention;
FIG. 6 is a schematic diagram of a connection structure of a front rigid joint and a rear rigid joint provided by the invention;
wherein:
1. a reinforcement cage; 2. a locking piece A; 3. a locking piece B; 4. a locking strip; 5. a connecting plate; 6. a galvanization plate for preventing winding; 7. a special joint plate; 8. a primary web; 9. an internal connection plate; 10. thick-wall steel pipes; 11. an inwardly projecting web; 12. a flow-limiting strip.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-6, the embodiment of the invention discloses a reinforced concrete underground diaphragm wall, which comprises a plurality of rigid joints, wherein adjacent rigid joints are mutually buckled and locked, and concrete is poured in sections to form a complete rigid underground diaphragm wall body.
The invention also provides a rigid joint of the underground diaphragm wall, which comprises a reinforcement cage 1, a locking piece A2 and a locking piece B3;
the two sides of the reinforcement cage 1 are provided with stressed bars;
the locking piece A2 is welded with a stressed rib on one side of the reinforcement cage 1;
the locking piece B3 is welded with a stressed rib on the other side of the reinforcement cage 1;
the locking piece A2 and the locking piece B3 can be mutually buckled and locked. In this embodiment, the steel reinforcement cage 1 is similar to the existing steel reinforcement cage in design and arrangement, and is composed of longitudinal and transverse stress bars, stand bars, connecting bars and the like, which are not described herein, and the difference is that the welding of the end locking piece, the length of the welding seam between the stress bars and the connecting steel plate meets the common design requirement; the cage body of the reinforcement cage 1 is welded on a preset reinforcement cage tire membrane frame, reinforcement blanking is performed in batches, manual or mechanical hand welding is adopted, plane and three-dimensional welding precision is ensured, and the arrangement of the welding directions of the left, right, upper and lower locking fasteners is ensured to be locked.
In order to further optimize above-mentioned technical scheme, hasp spare A2 includes hasp strip 4 and connecting plate 5, and hasp strip 4 includes L type hasp connecting piece and towards the crooked lock of L type hasp connecting piece and collude, and connecting plate 5 is connected in the riser of L type hasp connecting piece one end of keeping away from the diaphragm.
In order to further optimize above-mentioned technical scheme, hasp spare B3 includes hasp strip 4 and connecting plate 5, and hasp strip 4 includes L type hasp connecting piece and towards the crooked lock of L type hasp connecting piece and collude, connecting plate 5 is connected in the riser of L type hasp connecting piece and is close to the one end of diaphragm.
In order to further optimize the technical scheme, the number of the locking pieces A2 is two, and the two locking pieces A2 are respectively fixed on the upper and lower stress bars on one side of the reinforcement cage 1; the number of the locking pieces B3 is two, and the two locking pieces B3 are respectively fixed on the upper and lower stress bars on the other side of the reinforcement cage 1.
In the embodiment, special hot-rolled interlocking steel buckling strips and steel plates with proper sizes are used, the special buckling pieces are processed in factories, and when the reinforcement cage 1 of the underground continuous wall is processed, the connecting plates 5 of the buckling pieces are welded and connected with the transverse main ribs, and the length of welding seams is longer than the equivalent lap joint length of the main ribs; if the strength of the steel is consistent, the transverse minimum sectional area of the locking piece is larger than the sectional area of the transverse stressed steel bar; the tensile strength and the compressive strength of the vertical locking piece in the length direction are larger than the equivalent strength of the vertical steel bars designed at the corresponding positions, and if the steel strengths are consistent, the cross section area of the vertical locking piece is larger than the cross section area of the designed vertical steel bars; the factory processing of the locking piece can ensure the processing precision, the welding of the field steel bar and the locking piece can also realize the corresponding welding quality, the scale welding can also be realized, the standardization degree is high, the cost is lower, the total welding quantity is smaller than that of the welding quantity head connected with the current cross steel plate and I-steel section steel, and the actual consumed steel quality is less than 50% of that of the current joint mode.
The thickness of the steel plate of the locking strip 4 and the minimum thickness of the connecting plate 5 in the transverse direction of the locking piece are matched according to the number, the size and the interval of the transverse stress bars of the reinforcement cage 1, so that the product of the thickness A of the minimum connecting part of the locking piece, the center distance L of the stress bars and the steel strength f1 is ensured to be larger than the product of the sectional area B of the reinforcement and the strength f2 of the reinforcement;
namely: al is defined as f1> B f2
The product of the cross section a of the locking piece and the strength f1 in the vertical direction of the locking piece is 2 times, and the area b of the vertically stressed steel bars and the strength f2 of the steel bars are larger than the area b of the vertically stressed steel bars;
namely: a > f1, b > f2
The strength of the transverse steel plate and the vertical steel plate of the locking piece is larger than the equivalent strength of the vertical stressed steel bar and the transverse stressed main steel bar which are correspondingly designed, and a certain safety margin is provided, so that the equivalent connection of the two-order steel bar cages is realized.
The hot rolling technology and the processing technology of the locking piece at home are improved considerably, the locking piece is formed by processing customized hot rolled locking strips 4 and connecting steel plates on a processing platform of a factory, manual welding can be adopted, automatic welding can be adopted, positioning deformation prevention measures are adopted in the processing process, high processing precision is ensured, large-scale processing can be realized, and cost is controllable.
In order to further optimize the technical scheme, the anti-winding galvanized sheet 6 is further included, and a plurality of anti-winding galvanized sheets 6 are respectively connected with the locking piece A2 and the locking piece B3. In the embodiment, the outside of the locking piece is fixed with the anti-detour galvanized plate 6 for preventing the detour in the concrete groove hole according to the requirement, so that the lifting difficulty of the detour to the special joint plate 7 is reduced.
The invention also provides a construction method for constructing the reinforced concrete underground continuous wall, which comprises the following steps:
s1, processing a plurality of rigid joints, and excavating to complete underground diaphragm wall slotted holes after preparing guide walls;
s2, after the slotted holes are cleared, setting a rigid joint processed in the step S1, and setting special joint plates 7 at two sides of the rigid joint respectively;
s3, pouring the first-order underground continuous wall trough section under the slurry by adopting a guide pipe;
s4, excavating from the far end of the subsequent groove section until the whole excavation process is completed;
s5, lifting the special joint plate 7 in the hole cleaning process, measuring in the hole and completing hole cleaning;
s6, a subsequent rigid joint is arranged below and locked with the preceding rigid joint through a locking piece, and a special joint plate 7 is arranged below one side of the subsequent rigid joint, which is far away from the preceding rigid joint;
and S7, pouring the subsequent groove sections, and repeating the steps S4-S6 to complete the construction of the rigid reinforced concrete underground continuous wall. In the embodiment, after the locking piece of the first-stage reinforced concrete underground diaphragm wall unit is protected by the special joint plate 7, after the second-stage concrete is poured in the slurry slotted hole, the first-order reinforcement cage is vertically and tightly connected by the special locking piece, the bottom of the locking piece of the first-order reinforcement cage can be welded with limit treatment measures, and after the second-order reinforcement cage is spliced and arranged in place, the upper part of the locking piece is permanently fixed in a range close to the slotted hole opening; the vertical arrangement range of the locking pieces can be distributed more than 3 meters below the excavation bottom plate of the internal foundation pit of the reinforced concrete underground diaphragm wall, and the whole-groove distribution is not required; and after the secondary concrete is poured, the joint rigid joint of the reinforced concrete underground diaphragm wall is realized, better seepage prevention and stress requirements are provided, and a more continuous and complete reinforced concrete underground diaphragm wall is realized.
The method comprises the steps of preparing a slurry stirring supply system before construction, arranging a production supply system of concrete under water, a reinforcement cage processing workshop, a processing jig frame platform, and on-site measurement positioning and construction guide wall and platform preparation work, and sequentially constructing the construction method for constructing the reinforced concrete underground continuous wall.
Through the construction procedure, the construction of a complete front-rear rigid joint is realized, and the construction of the two unit rigid underground continuous walls is completed.
Although the reinforcement cage has certain flexibility in a hanging state, the rigidity is not greatly different from that of the steel sheet pile or the special joint plate 7, the accumulation of construction errors can be ensured, the situation that locking deviation cannot be spliced can occur, firstly, the accurate measurement of the state under the slurry of the reinforcement cage after the complete field installation is enhanced, the error accumulation is reduced, and the local size of the reinforcement cage is finely adjusted in time; secondly, when great deviation appears, can change the hasp spare that the follow-up steel reinforcement cage is located the inboard into straight steel sheet, establish the time alignment steel reinforcement cage state down, carry out reinforcement welding to the hasp spare after the later stage excavation and satisfy the hasp requirement.
In order to further optimize the technical scheme, the special joint plate 7 comprises a main web 8, an internal connecting plate 9, a thick-wall steel pipe 10 and an internal convex web 11;
the main web 8 is of a groove structure, and two side walls of the main web are side plates with hooks;
the number of the internal connecting plates 9 is two, and the two internal connecting plates 9 are positioned at the inner side of the main web 8 and respectively abutted with the two side plates with hooks;
the thick-wall steel pipe 10 is clamped between the two internal connecting plates 9;
the inner convex web 11 comprises a main board abutted against the thick-wall steel pipe 10 and two side boards positioned at two ends of the main board and respectively fixed with the two inner connecting boards 9. In the embodiment, the special joint plate 7 is a plate device formed by steel structure accessories such as a main web 8, an internal connecting plate 9, a thick-wall steel pipe 10, an internal convex web 11 and the like, and the accessories such as the main web 8, the internal connecting plate 9, the thick-wall steel pipe 10, the internal convex web 11 and the like are welded by adopting steel plates; the special joint plate 7 is processed by factories, so that the plane and three-dimensional welding precision is ensured, and the end hooks of the side plates with hooks of the special joint plate 7 can be inserted and locked with locking pieces of the reinforcement cage from top to bottom.
In order to further optimize the technical scheme, the device further comprises a current limiting strip 12, and the current limiting strip 12 is fixed on the internal connecting plate 9. In this embodiment, the flow restricting strip 12 is a steel pipe or round steel of about 20 mm.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The reinforced concrete underground diaphragm wall is characterized by comprising a plurality of rigid joints, wherein adjacent rigid joints are mutually buckled and locked, and concrete is poured in sections to form a complete rigid underground diaphragm wall body.
2. The reinforced concrete underground diaphragm wall of claim 1, wherein the rigid joint comprises a reinforcement cage, a locking piece a and a locking piece B;
the two sides of the reinforcement cage are provided with stressed tendons;
the locking piece A is welded with a stressed rib on one side of the reinforcement cage;
the locking piece B is welded with a stressed rib on the other side of the reinforcement cage;
the lock catch piece A and the lock catch piece B can be mutually buckled and locked.
3. The reinforced concrete underground diaphragm wall of claim 2, wherein the locking member a comprises a locking bar and a connecting plate, the locking bar comprises an L-shaped locking connector and a locking hook bent toward the L-shaped locking connector, and the connecting plate is connected to one end of the riser of the L-shaped locking connector, which is far away from the transverse plate.
4. The reinforced concrete underground diaphragm wall of claim 2, wherein the locking member B comprises a locking bar and a connecting plate, the locking bar comprises an L-shaped locking connector and a locking hook bent toward the L-shaped locking connector, and the connecting plate is connected to one end of the riser of the L-shaped locking connector, which is close to the cross plate.
5. The reinforced concrete underground diaphragm wall according to claim 2, wherein the number of the locking pieces A is two, and the two locking pieces A are respectively fixed on the upper and lower stress bars at one side of the reinforcement cage; the number of the locking pieces B is two, and the two locking pieces B are respectively fixed on the upper and lower stressed bars on the other side of the reinforcement cage.
6. The reinforced concrete underground diaphragm wall of claim 2, further comprising a plurality of anti-wind galvanized sheets connected to the locking members a and B, respectively.
7. The construction method for constructing the reinforced concrete underground continuous wall is characterized by comprising the following steps of:
s1, processing a plurality of rigid joints according to any one of claims 1-6, and excavating to complete underground diaphragm wall slotted holes after preparing guide walls;
s2, after the slotted holes are cleared, setting a rigid joint processed in the step S1, and setting special joint plates at two sides of the rigid joint respectively;
s3, pouring the first-order underground continuous wall trough section under the slurry by adopting a guide pipe;
s4, excavating from the far end of the subsequent groove section until the whole excavation process is completed;
s5, lifting the special joint plate in the hole cleaning process, measuring in the hole and completing hole cleaning;
s6, a subsequent rigid joint is arranged below and locked with the preceding rigid joint through a locking piece, and a special joint plate is arranged below one side of the subsequent rigid joint, which is far away from the preceding rigid joint;
and S7, pouring the subsequent groove sections, and repeating the steps S4-S6 to complete the construction of the rigid reinforced concrete underground continuous wall.
8. The construction method for constructing a reinforced concrete underground diaphragm wall according to claim 7, wherein the special joint plates comprise a main web, an internal connecting plate, a thick-wall steel pipe and an internal convex web;
the main web plate is of a groove structure, and two side walls of the main web plate are side plates with hooks;
the number of the internal connecting plates is two, and the two internal connecting plates are positioned at the inner side of the main web and respectively abutted with the two hooked side plates;
the thick-wall steel pipe is clamped between the two internal connecting plates;
the inner convex web plate comprises a main plate and two side plates, wherein the main plate is in butt joint with the thick-wall steel pipe, the two side plates are positioned at two ends of the main plate and are respectively fixed with the two inner connecting plates.
9. The method of claim 8, further comprising a restrictor bar secured to the interconnecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311206750.XA CN117144894A (en) | 2023-09-19 | 2023-09-19 | Reinforced concrete underground diaphragm wall and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311206750.XA CN117144894A (en) | 2023-09-19 | 2023-09-19 | Reinforced concrete underground diaphragm wall and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117144894A true CN117144894A (en) | 2023-12-01 |
Family
ID=88907963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311206750.XA Pending CN117144894A (en) | 2023-09-19 | 2023-09-19 | Reinforced concrete underground diaphragm wall and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117144894A (en) |
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2023
- 2023-09-19 CN CN202311206750.XA patent/CN117144894A/en active Pending
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