CN115369924A - Construction method of underground continuous wall joint - Google Patents
Construction method of underground continuous wall joint Download PDFInfo
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- CN115369924A CN115369924A CN202210920775.5A CN202210920775A CN115369924A CN 115369924 A CN115369924 A CN 115369924A CN 202210920775 A CN202210920775 A CN 202210920775A CN 115369924 A CN115369924 A CN 115369924A
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- 238000010276 construction Methods 0.000 title claims abstract description 102
- 230000002787 reinforcement Effects 0.000 claims abstract description 111
- 210000001503 joint Anatomy 0.000 claims abstract description 66
- 239000004567 concrete Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 130
- 239000010959 steel Substances 0.000 claims description 130
- 239000011440 grout Substances 0.000 claims description 21
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 238000003032 molecular docking Methods 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 5
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 239000002002 slurry Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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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
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
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- 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
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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
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (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)
- Hydrology & Water Resources (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a construction method of an underground continuous wall joint, which comprises the following steps: fixedly arranging a butt joint piece at the end part of a first reinforcement cage of a first construction section, and arranging the butt joint piece along the height direction of the first reinforcement cage in a full-length manner, wherein a butt joint groove arranged along the length direction of the butt joint piece is formed on the provided butt joint piece; fixedly arranging the plug-in assembly at the bottom of the butt joint groove; pouring concrete to form a first construction section; when a second reinforcement cage of a second construction section is bound, a slot matched with the plug-in component is formed at the end part of the second reinforcement cage; hoisting a second reinforcement cage, inserting the end part of the second reinforcement cage into the butt joint groove and fixedly connecting the end part of the second reinforcement cage with the inner wall of the butt joint groove, and inserting the plug-in assembly into the slot; and pouring concrete to form a second construction section, and fixedly connecting the second construction section with the first construction section. The splicing assembly extends into the end part anchored at the second construction section, so that the connection strength of the joint of the first construction section and the second construction section is enhanced, and the problem of water seepage gaps caused by insufficient connection strength is avoided.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a construction method of an underground continuous wall joint.
Background
The underground continuous wall is a foundation engineering, and adopts a trenching machine on the ground, a long and narrow deep groove is excavated under the condition of slurry wall protection along the peripheral axis of the deep excavation engineering, after the groove is cleaned, a steel reinforcement cage is hung in the groove, then underwater concrete is poured by a conduit method to form a unit groove section, and the steps are carried out section by section, so that a continuous reinforced concrete wall is built underground to be used as a structure for intercepting water, preventing seepage, bearing and retaining water.
The existing diaphragm wall adopts segmented construction, the adjacent diaphragm wall construction sections adopt I-shaped steel for rigid connection, the connection strength of joints is limited, and the problem of water seepage is easily caused. How to guarantee the firmness of the joint of the diaphragm wall construction section and guarantee the waterproof performance of the joint is a problem to be solved urgently.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a construction method of an underground continuous wall joint so as to solve the problems that the joint of the existing wall-connecting construction section is limited in connection strength and is easy to generate water seepage.
In order to achieve the above object, the present invention provides a construction method of an underground diaphragm wall joint for connecting adjacent first and second construction sections, the construction method comprising the steps of:
providing a butt joint piece, fixedly arranging the butt joint piece at the end part of a first reinforcement cage of a first construction section, and arranging the butt joint piece along the full length direction of the first reinforcement cage, wherein a butt joint groove arranged along the full length direction of the butt joint piece is formed on the provided butt joint piece;
providing an inserting assembly, fixedly arranging the inserting assembly at the bottom of the butt joint groove, and enabling the inserting assembly to be arranged along the length direction of the butt joint piece in a full-length mode;
pouring concrete to bury the first reinforcement cage to form a first construction section;
when a second reinforcement cage of a second construction section is bound, a slot matched with the plug-in component is formed at the end part of the second reinforcement cage;
hoisting the second reinforcement cage, inserting the end part of the second reinforcement cage into the butt joint groove and fixedly connecting the end part of the second reinforcement cage with the inner wall of the butt joint groove, and inserting the plug-in assembly into the slot;
and pouring concrete to bury the second reinforcement cage, the butt joint piece and the splicing assembly to form a second construction section, so that the second construction section is fixedly connected with the first construction section.
According to the invention, the splicing assembly is arranged in the butt joint groove, the slot matched with the splicing assembly is formed at the end part of the second reinforcement cage, and when the end part of the second reinforcement cage is inserted into the butt joint groove, the splicing assembly is inserted into the slot, so that the splicing assembly extends into and is anchored at the end part of the second construction section, the connection strength of the joint of the first construction section and the second construction section is enhanced, and the problem of water seepage gap caused by insufficient connection strength is avoided.
The construction method of the underground continuous wall joint is further improved in that the inserting component is of a steel reinforcement cage structure;
after the installation of the butt joint piece is completed, providing a first positioning ring, and fixedly arranging a plurality of rows of first positioning rings which are transversely arranged in the plug-in assembly at intervals so that each row of first positioning rings are distributed at intervals along the length direction of the plug-in assembly;
providing tie bars, transversely installing the tie bars in the end part of the second reinforcement cage corresponding to the first positioning ring to form a plurality of rows of tie bars, wherein the tie bars can move and adjust towards the direction close to or far away from the corresponding first positioning ring;
providing a connecting rod and a second positioning ring, fixedly connecting the connecting rod between two adjacent tie bars in each row of the tie bars, and fixedly arranging the second positioning ring at one end of each tie bar close to the first positioning ring;
before the second reinforcement cage is hoisted, the tie reinforcement is movably adjusted to be positioned in the second reinforcement cage, so that the second positioning ring avoids the inserting assembly when the second reinforcement cage is hoisted;
after the second steel reinforcement cage is hoisted, providing steel strands, fixedly connecting the steel strands to the tie steel bars at the top in each row of the tie steel bars, pulling the steel strands to enable the tie steel bars to move towards the corresponding first positioning rings, and enabling the second positioning rings on each row of the tie steel bars to be overlapped with the corresponding first positioning rings;
and providing positioning steel bars, and inserting the positioning steel bars into the first positioning ring and the second positioning ring which are overlapped.
The construction method of the underground diaphragm wall joint of the invention is further improved in that,
when the tying steel bar is installed, providing a sleeve, a sealing plate and a limiting plate, vertically connecting the limiting plate to the tying steel bar, penetrating the tying steel bar into the sleeve, enabling the limiting plate to be located in the sleeve, sleeving the sealing plate on the tying steel bar, enabling the sealing plate to be sealed and fixed at the end of the sleeve, and transversely fixing the sleeve in the end of the second steel bar cage corresponding to the first positioning ring;
when the second positioning rings of each row are superposed with the first positioning rings of the corresponding row, the limiting plate is abutted against the sealing plate at one end, close to the first positioning rings, of the sleeve.
The construction method of the underground continuous wall joint is further improved in that the provided butt joint part is I-shaped steel and comprises a pair of wing plates arranged in parallel and a web plate vertically connected between the pair of wing plates, and the wing plates are provided with a first end and a second end which are positioned on two sides of the web plate;
when the butt joint piece is installed, the I-shaped steel is sleeved at the end part of the first steel reinforcement cage in a clamping mode, one side of the web plate is fixedly arranged on the end face of the first steel reinforcement cage, first ends of the pair of wing plates are located on two sides of the end part of the first steel reinforcement cage and are fixedly connected with the end part of the first steel reinforcement cage, and second ends of the pair of wing plates and the other side of the web plate are enclosed to form the butt joint groove;
and when the plug-in assembly is installed, the plug-in assembly is fixedly arranged on the other side of the web plate.
The construction method of the underground continuous wall joint is further improved in that a grout stop plate is provided when the butt joint piece is installed, the grout stop plate is flexible, the grout stop plate is fixedly arranged at the first end of the wing plate and is positioned on one side of the wing plate, which is far away from the first reinforcement cage, and the grout stop plate extends out of the wing plate and is blocked at the side part of the first reinforcement cage;
when the first steel reinforcement cage is hung in the first trough section of the first construction section, the grout stopping plate is attached to the trough wall of the first trough section.
The construction method of the underground diaphragm wall joint of the invention is further improved in that,
when the butt joint piece is installed, a bottom plate, a side plate and a steel wire rope are provided, the bottom plate is installed on the bottom surface of the I-shaped steel corresponding to the butt joint groove and fixedly connected with the bottom surface of the splicing assembly, a positioning groove arranged in parallel with the web plate is formed in the top surface of the provided bottom plate, a groove is formed in the side plate corresponding to the second end of the wing plate, the side plate is clamped on the second ends of the pair of wing plates through the groove, the bottom of the side plate is inserted into the positioning groove, and the side plate and the web plate are connected through the steel wire rope in a pulling mode;
before pouring the first construction section, in the design position department excavation of first construction section forms first groove section, and to the design position of second construction section extend the excavation form with the extension groove section of first groove section intercommunication, will first steel reinforcement cage is transferred to in the first groove section, and makes the bottom plate with the curb plate is located in the extension groove section, the both sides of curb plate support lean on in the cell wall of extension groove section.
The construction method of the underground continuous wall joint is further improved in that when the butt joint piece is installed, a first pull ring and a second pull ring are provided, at least one row of first pull rings is fixedly arranged on the other side of the web plate, each row of first pull rings is distributed at intervals along the height direction of the web plate and is arranged in a staggered mode with the splicing assembly, at least one row of second pull rings is fixedly arranged on one side, close to the web plate, of the side plate, the first pull rings and the second pull rings are arranged in a one-to-one corresponding mode, and the steel wire rope penetrates through one row of first pull rings and the corresponding row of second pull rings to connect the side plate and the web plate in a pulling mode.
The construction method of the underground continuous wall joint is further improved in that after the concrete of the first construction section reaches the set strength, the steel wire rope is removed, and the side plate is lifted out.
The construction method of the underground continuous wall joint is further improved in that when the splicing assembly is installed, a steel plate is provided, the steel plate is vertically connected to the bottom of the butt joint groove, the steel plate is located in the middle of the butt joint groove and is generally arranged along the height direction of the web plate, a first reinforcing steel bar cage and a second reinforcing steel bar cage are respectively bound and fixed to two sides of the steel plate, and the first reinforcing steel bar cage and the second reinforcing steel bar cage are respectively and fixedly connected with the other side of the web plate.
The construction method of the underground continuous wall joint is further improved in that the steel plate is provided with a first side and a second side which are oppositely arranged, and the other side of the web plate is provided with a first part connected with the first side of the steel plate and a second part connected with the second side of the steel plate;
when the first reinforcing steel bar cage is bound and fixed, providing first studs, first stirrups and first vertical reinforcing steel bars, fixedly arranging a plurality of rows of the first studs on a first side of the steel plate and a first part of the web plate at intervals, enabling the first studs of the plurality of rows to be distributed at intervals in the vertical direction, hooping and fixing the first stirrups on each row of the first studs, fixedly connecting the first vertical reinforcing steel bars to the first stirrups, and enabling the first vertical reinforcing steel bars to be distributed at intervals along the length direction of the first stirrups;
when the ligature is fixed during the second steel reinforcement cage, provide second peg, second stirrup and the vertical reinforcing bar of second, in the second side of steel sheet with a plurality of rows set firmly on the second part of web at the interval the second peg makes a plurality of rows the second peg is along vertical direction interval distribution, will the second stirrup hoop establishes to be fixed in every row on the second peg, with a plurality of the vertical reinforcing bar fixed connection of second in a plurality of on the second stirrup, make a plurality of the vertical reinforcing bar of second is followed the length direction interval distribution of second stirrup.
Drawings
Fig. 1 is a view illustrating a state where an end of a second reinforcement cage is inserted into a butting groove in a construction method of an underground diaphragm wall joint according to the present invention.
Fig. 2 is a state diagram of the first reinforcement cage being hung into the first groove section in the construction method of the underground diaphragm wall joint of the present invention.
Fig. 3 is a diagram illustrating a state that a second reinforcement cage is suspended into a second channel section in the method for constructing an underground diaphragm wall joint according to the present invention.
FIG. 4 is a schematic structural view of I-shaped steel and a bottom plate in the construction method of the underground continuous wall joint of the invention.
Fig. 5 is a schematic structural view of a side plate in the construction method of the underground diaphragm wall joint according to the present invention.
Fig. 6 is a schematic structural view of a tie bar, a second positioning ring, a connecting rod, a sleeve, a sealing plate and a limiting plate in the construction method of the underground continuous wall joint of the invention.
Description of the symbols: the structure comprises an I-shaped steel 10, a web 11, a first pull ring 111, a wing plate 12, a grout stop plate 121, a butt joint groove 13, a first reinforcement cage 20, a plug assembly 30, a first positioning ring 31, a first reinforcement cage 32, a first stud 321, a first stirrup 322, a first vertical reinforcement 323, a second reinforcement cage 33, a second stud 331, a second stirrup 332, a second vertical reinforcement 333, a second reinforcement cage 40, a slot 41, a tie reinforcement 42, a second positioning ring 43, a connecting rod 44, a sleeve 45, a sealing plate 46, a limiting plate 47, a positioning reinforcement 48, a bottom plate 50, a positioning groove 51, a side plate 60, a groove 61, a second pull ring 62, a steel plate 70, a first groove section 80, an extension groove section 801, a first construction section 81 and a second construction section 90.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The invention provides a construction method of an underground continuous wall joint, which can increase an underground water seepage path by welding a water stop plate at a web plate of an I-shaped steel joint of an adjacent underground continuous wall under the unfavorable working condition that the underground continuous wall without anchor rod support is also used as a basement outer wall; meanwhile, the integrity of the ground-connecting wall joint is effectively enhanced by measures such as welding studs on the I-shaped steel, installing vertical steel bars, binding hoops, arranging tie steel bars to extend into the I-shaped steel and the like; effectively guarantee the waterproof nature and the security of underground structure in the use.
The construction method of the underground diaphragm wall joint according to the present invention will be described with reference to the accompanying drawings.
Referring to fig. 1 and 3, in the present embodiment, a method of constructing a diaphragm wall joint for connecting adjacent first and second construction sections 81 and 81 includes the steps of:
s101: providing a butt joint piece, fixedly arranging the butt joint piece at the end part of the first reinforcement cage 20 of the first construction section 81, and arranging the butt joint piece along the height direction of the first reinforcement cage 20, wherein a butt joint groove 13 arranged along the length direction of the butt joint piece is formed on the provided butt joint piece;
s102: providing an inserting component 30, fixedly arranging the inserting component 30 at the bottom of the butt joint groove 13, and enabling the inserting component 30 to be arranged along the length direction of the butt joint piece;
s103: pouring concrete to bury the first reinforcement cage 20 to form a first construction section 81;
s104: when a second reinforcement cage 40 of a second construction section is bound, a slot 41 matched with the plug-in component 30 is formed at the end part of the second reinforcement cage 40;
s105: hoisting the second reinforcement cage 40, inserting the end part of the second reinforcement cage 40 into the butt joint groove 13 and fixedly connecting the end part with the inner wall of the butt joint groove 13, and inserting the inserting assembly 30 into the slot 41;
s106: and pouring concrete to bury the second steel reinforcement cage 40, the butting piece and the plug assembly 30 to form a second construction section, so that the second construction section is fixedly connected with the first construction section 81.
In the construction method of the underground continuous wall joint in the embodiment, the inserting component 30 is arranged in the butt joint groove 13, the end part of the second reinforcement cage 40 forms the inserting groove 41 matched with the inserting component 30, and when the end part of the second reinforcement cage 40 is inserted into the butt joint groove 13, the inserting component 30 is inserted into the inserting groove 41, so that the inserting component 30 extends into the end part anchored in the second construction section, the connection strength of the joint of the first construction section 81 and the second construction section is enhanced, and the problem of water seepage gaps caused by insufficient connection strength is avoided.
Referring to fig. 2, in one embodiment, the butt-joint member is provided as an i-steel 10 and includes a pair of flanges 12 arranged in parallel and a web 11 connected vertically between the pair of flanges 12, the flanges 12 having first and second ends on either side of the web 11;
when the butting piece is installed, the I-shaped steel 10 is clamped and sleeved at the end part of the first reinforcement cage 20, one side of the web plate 11 is fixedly arranged on the end surface of the first reinforcement cage 20, the first ends of the pair of wing plates 12 are positioned at two sides of the end part of the first reinforcement cage 20 and fixedly connected with the end part of the first reinforcement cage 20, and the second ends of the pair of wing plates 12 and the other side of the web plate 11 are encircled to form a butting groove 13;
when the plug assembly 30 is installed, the plug assembly 30 is fixedly mounted on the other side of the web 11.
Referring to fig. 2, further, when the abutting part is installed, a grout stop plate 121 is provided, the grout stop plate 121 is provided to have flexibility, the grout stop plate 121 is fixedly arranged at the first end of the wing plate 12 and located at the side of the wing plate 12 away from the first reinforcement cage 20, and the grout stop plate 121 partially extends out of the wing plate 12 and blocks the side of the first reinforcement cage 20;
when the first reinforcement cage 20 is suspended in the first trough section 80 of the first construction section 81, the grout stop plate 121 abuts against the trough wall of the first trough section 80.
Because the grout stopping plate 121 is flexible, when the concrete of the first construction section 81 is poured, under the lateral pressure of the concrete, the grout stopping plate 121 is tightly attached to the groove wall of the first groove section 80, and the situation that a gap exists between the grout stopping plate 121 and the groove wall of the first groove section 80 to enable the concrete to flow around the groove wall of the first groove section 80 to enter the opposite side of the joint of the I-shaped steel 10 is avoided, so that the bonding firmness with the second construction section is influenced.
Preferably, the slurry stop plate 121 is a galvanized steel sheet 70 having a thickness of 0.5mm.
Referring to fig. 2, 4 and 5, in a specific embodiment, when the docking member is installed, a bottom plate 50, a side plate 60 and a steel wire rope are provided, the bottom plate 50 is installed on the bottom surface of the i-beam 10 corresponding to the docking slot 13 and is fixedly connected with the bottom surface of the plug-in component 30, a positioning slot 51 arranged in parallel with the web 11 is formed on the top surface of the bottom plate 50, a groove 61 is formed on the side plate 60 corresponding to the second end of the wing 12, the side plate 60 is clamped on the second end of the wing 12 through the groove 61, the bottom of the side plate 60 is inserted into the positioning slot 51, and the side plate 60 is connected with the pull-joint of the web 11 through the steel wire rope;
before the first construction section 81 is poured, a first groove section 80 is formed by excavating at the design position of the first construction section 81, an extension groove section 801 communicated with the first groove section 80 is formed by extending and excavating towards the design position of the second construction section, the first reinforcement cage 20 is lowered into the first groove section 80, the bottom plate 50 and the side plate 60 are located in the extension groove section 801, and two sides of the side plate 60 abut against the groove wall of the extension groove section 801.
Bottom through the spacing fixed curb plate 60 of constant head tank 51, the second end joint of recess 61 and pterygoid lamina 12 is connected, and connect curb plate 60 with the drawknot of web 11 through wire rope, in order firmly and closely be fixed in on pterygoid lamina 12 and the bottom plate 50 with curb plate 60, avoid curb plate 60 because of receiving external force slope and displacement, ensure that the both sides of curb plate 60 support to realize sealing effectively by the cell wall that leans on in extension groove section 801, it is regional to avoid thick liquid and concrete to bypass curb plate 60 and get into the second construction section, guarantee that the faying face is clean.
Preferably, the height of the side plate 60 is matched with the height of the i-steel 10, and the groove 61 is arranged along the height direction of the side plate 60.
Preferably, the positioning groove 51 is formed along the length of the bottom plate 50.
Referring to fig. 2 and 5, further, when the docking member is installed, a first pull ring 111 and a second pull ring 62 are provided, at least one row of first pull rings 111 is fixedly arranged on the other side of the web 11, each row of first pull rings 111 is distributed at intervals along the height direction of the web 11 and is staggered with the plug-in component 30, at least one row of second pull rings 62 is fixedly arranged on one side of the side plate 60 close to the web 11, so that the first pull rings 111 and the second pull rings 62 are arranged in a one-to-one correspondence, and a steel wire rope passes through the row of first pull rings 111 and the corresponding row of second pull rings 62 to connect the pull joint of the side plate 60 and the web 11.
Preferably, the first pull rings 111 are two rows and are located at two sides of the plug assembly 30.
The first pull ring 111 and the second pull ring 62 are fixed by the steel wire rope, so that the web 11 and the side plate 60 can be effectively fixed in a pulling mode in the height direction of the web 11 and the height direction of the side plate 60, and the connection strength is enhanced. Because later stage need hang out curb plate 60 in order to construct the second construction section, utilize a wire rope drawknot to be listed as first pull ring 111 and the second pull ring 62 that corresponds, only need remove a wire rope, can remove the fixed of the first pull ring 111 of a list and the second pull ring 62 that corresponds, convenient construction.
Furthermore, a first hanging ring and a second hanging ring are provided, the first hanging ring is fixedly arranged on the top surface of the web plate 11, and the second hanging ring is fixedly arranged on the top surface of the side plate 60.
The first and second eye rings are drawably connected by a drawstring to further secure the top of the web 11 and the top of the side panel 60.
Further, before the concrete of the first construction section 81 is poured, a sand bag is backfilled in the lateral extension groove section 801 of the side plate 60 far away from the web 11 so as to further reinforce and support the side plate 60, and the problem of slurry streaming caused by inclination or displacement of the side plate 60 is avoided.
Furthermore, after the concrete in the first construction segment 81 reaches a predetermined strength, the wire rope is released and the side plate 60 is lifted out.
Referring to fig. 2, in one embodiment, when the plug assembly 30 is installed, a steel plate 70 is provided, the steel plate 70 is vertically connected to the bottom of the docking slot 13, the steel plate 70 is located in the middle of the docking slot 13 and is generally disposed along the height direction of the web 11, a first reinforcing steel bar cage 32 and a second reinforcing steel bar cage 33 are respectively bound and fixed to two sides of the steel plate 70, and the first reinforcing steel bar cage 32 and the second reinforcing steel bar cage 33 are respectively fixedly connected to the other side of the web 11.
Further, the end of the steel plate 70 away from the web 11 is fixedly connected to the second reinforcement cage 40. The groundwater seepage path is enlarged by the steel plate 70, ensuring the waterproof performance of the joint.
Referring to fig. 2, the first rebar cage 32, the second rebar cage 33, and the steel plate 70 preferably form a triangular shape. Preferably, the slot 41 is triangular, and the first reinforcement cage 32, the second reinforcement cage 33 and the steel plate 70 are inserted into the slot 41 and fixedly connected with the second reinforcement cage 40, so that the engagement between the second reinforcement cage 40 and the joint of the i-steel 10 is enhanced, the integrity of the joint is enhanced, and the waterproofness and the safety of the underground structure in the using process are effectively ensured.
Referring to fig. 2, further, the steel plate 70 has a first side and a second side which are oppositely arranged, and the other side of the web 11 has a first portion connected to the first side of the steel plate 70 and a second portion connected to the second side of the steel plate 70;
when the first reinforcing steel bar cage 32 is bound and fixed, providing first studs 321, first stirrups 322 and first vertical steel bars 323, fixedly arranging a plurality of rows of the first studs 321 on the first side of the steel plate 70 and the first part of the web 11 at intervals, enabling the plurality of rows of the first studs 321 to be distributed at intervals in the vertical direction, hooping and fixing the first stirrups 322 on each row of the first studs 321, fixedly connecting the plurality of first vertical steel bars 323 on the plurality of first stirrups 322, and enabling the plurality of first vertical steel bars 323 to be distributed at intervals in the length direction of the first stirrups 322;
when the second rebar cage 33 is bound and fixed, second studs 331, second stirrups 332 and second vertical rebars 333 are provided, a plurality of rows of second studs 331 are fixed on the second side of the steel plate 70 and the second portion of the web 11 at intervals, the plurality of rows of second studs 331 are distributed at intervals in the vertical direction, the second stirrups 332 are bound and fixed on each row of second studs 331, the plurality of second vertical rebars 333 are fixedly connected to the plurality of second stirrups 332, and the plurality of second vertical rebars 333 are distributed at intervals in the length direction of the second stirrups 332.
Referring to fig. 1, in one embodiment, the plug assembly 30 is a steel reinforcement cage structure;
after the installation of the butt joint piece is completed, providing a first positioning ring 31, and fixedly arranging a plurality of rows of first positioning rings 31 transversely arranged in the plug-in assembly 30 at intervals, so that each row of first positioning rings 31 is distributed at intervals along the length direction of the plug-in assembly 30;
providing tie bars 42, transversely installing the tie bars 42 corresponding to the first positioning rings 31 in the end parts of the second reinforcement cages 40 to form a plurality of rows of tie bars 42, wherein the tie bars 42 can move and adjust towards the direction close to or far away from the corresponding first positioning rings 31;
providing a connecting rod 44 and a second positioning ring 43, fixedly connecting the connecting rod 44 between two adjacent tie bars 42 in each row of tie bars 42, and fixedly arranging the second positioning ring 43 at one end of the tie bars 42 close to the first positioning ring 31;
before the second reinforcement cage 40 is hoisted, the tie bars 42 are moved and adjusted to enable the tie bars 42 to be positioned in the second reinforcement cage 40, so that the second positioning ring 43 avoids the plug-in assembly 30 when the second reinforcement cage 40 is hoisted;
after the second reinforcement cage 40 is hoisted, providing steel strands, fixedly connecting the steel strands to the tie reinforcements 42 positioned at the top in each row of the tie reinforcements 42, pulling the steel strands to enable the tie reinforcements 42 to move towards the corresponding first positioning rings 31, and enabling the second positioning rings 43 on each row of the tie reinforcements 42 to coincide with the corresponding rows of the first positioning rings 31;
a positioning bar 48 is provided and the positioning bar 48 is inserted into the first positioning ring row 31 and the second positioning ring row 43 which are overlapped.
Further, the positioning bar 48 is welded and fixed to the first positioning ring 31 and the second positioning ring 43.
Furthermore, the first pull rings 111 are two rows and located at two sides of the plug assembly 30, and the tie bars 42 are disposed corresponding to the first positioning rings 31.
Insert first retaining ring 31 and second retaining ring 43 through spacer bar 48 to with drawknot reinforcing bar 42 fixed connection on grafting subassembly 30, thereby realize with the tip of second steel reinforcement cage 40 on the connecting piece more firmly fixed connection, ensure that second construction section and first construction section 81 are firm reliably fixed connection more, strengthened the rigidity and the joint strength that second construction section and first construction section 81 connect.
Referring to fig. 2 and 6, further, when the tie bars 42 are installed, a sleeve 45, a sealing plate 46 and a limiting plate 47 are provided, the limiting plate 47 is vertically connected to the tie bars 42, the tie bars 42 are inserted into the sleeve 45, the limiting plate 47 is located in the sleeve 45, the sealing plate 46 is sleeved on the tie bars 42, the sealing plate 46 is sealed and fixed at the end of the sleeve 45, and the sleeve 45 is transversely fixed in the end of the second reinforcement cage 40 corresponding to the first positioning ring 31;
when each row of the second positioning rings 43 is overlapped with the corresponding row of the first positioning rings 31, the stop plate 47 abuts against the closing plate 46 at one end of the sleeve 45 close to the first positioning ring 31.
Furthermore, the first construction segments 81 are spaced apart, and the second construction segment is located between two adjacent first construction segments 81. After the construction of the first construction sections 81 is completed, a second groove section 90 forming a second construction section is excavated between two adjacent first construction sections 81.
The size of second steel reinforcement cage 40 and the size phase-match of second groove 90, through setting up sleeve 45 so that drawknot reinforcing bar 42 can move in sleeve 45, before hanging second steel reinforcement cage 40, through moving adjusting drawknot reinforcing bar 42 and making drawknot reinforcing bar 42 be located second steel reinforcement cage 40, avoid stretching out outside second steel reinforcement cage 40 and touch grafting subassembly 30 because of drawknot reinforcing bar 42, and spacing sleeve 45 through limiting plate 47 and shrouding 46, avoid on the one hand the in-process drawknot reinforcing bar 42 of hoist and mount to drop, on the other hand, through steel strand wires pulling drawknot reinforcing bar 42 and moving, when limiting plate 47 supports and leans on in the shrouding 46 that sleeve 45 is close to first locating ring 31 one end, second locating ring 43 coincides with the first locating ring 31 that corresponds the row, conveniently control adjusts first locating ring 31 and the coincidence of second locating ring 43.
Preferably, the first positioning ring 31 is fixed on the first pin 321.
By adopting the technical scheme, the invention has the following beneficial effects:
according to the invention, the grout stop plate 121 is arranged to effectively prevent the grout from entering the opposite side of the joint of the I-shaped steel 10 along the wall of the groove and influencing the bonding firmness with the second construction section when the concrete of the first construction section 81 is poured; meanwhile, in order to solve the problems of waterproofness and integrity of the ground wall joint, the technology welds a steel plate 70 on the web plate 11 of the I-shaped steel 10 joint, increases the underground water seepage path and ensures the waterproofness of the joint; utilize first holding ring 31, second holding ring 43 and vertical reinforcing bar, be fixed in second steel reinforcement cage 40 drawknot on web 11, ensure the rigidity and the joint strength of joint department, effectively strengthen the wholeness of ground wall joint.
It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Claims (10)
1. A construction method of an underground diaphragm wall joint for connecting adjacent first and second construction sections, the construction method comprising the steps of:
providing a butt joint piece, fixedly arranging the butt joint piece at the end part of a first reinforcement cage of a first construction section, and arranging the butt joint piece along the height direction of the first reinforcement cage in a full-length manner, wherein a butt joint groove arranged along the length direction of the butt joint piece is formed in the butt joint piece;
providing an inserting assembly, fixedly arranging the inserting assembly at the bottom of the butt joint groove, and enabling the inserting assembly to be arranged along the length direction of the butt joint piece in a full-length mode;
pouring concrete to bury the first reinforcement cage to form a first construction section;
when a second reinforcement cage of a second construction section is bound, a slot matched with the plug-in component is formed at the end part of the second reinforcement cage;
hoisting the second reinforcement cage, inserting the end part of the second reinforcement cage into the butt joint groove and fixedly connecting the end part of the second reinforcement cage with the inner wall of the butt joint groove, and inserting the plug-in assembly into the slot;
and pouring concrete to bury the second reinforcement cage, the butt joint piece and the splicing assembly to form a second construction section, so that the second construction section is fixedly connected with the first construction section.
2. The method of constructing an underground diaphragm wall joint according to claim 1,
the inserting assembly is of a steel reinforcement cage structure;
after the installation of the butt joint piece is completed, providing a first positioning ring, and fixedly arranging a plurality of rows of first positioning rings which are transversely arranged in the plug-in assembly at intervals so that each row of first positioning rings are distributed at intervals along the length direction of the plug-in assembly;
providing tie bars, transversely installing the tie bars in the end part of the second reinforcement cage corresponding to the first positioning ring to form a plurality of rows of tie bars, wherein the tie bars can move and adjust towards the direction close to or far away from the corresponding first positioning ring;
providing a connecting rod and a second positioning ring, fixedly connecting the connecting rod between two adjacent tie bars in each row of the tie bars, and fixedly arranging the second positioning ring at one end of each tie bar close to the first positioning ring;
before the second reinforcement cage is hoisted, the tie reinforcement is movably adjusted to be positioned in the second reinforcement cage, so that the second positioning ring avoids the inserting assembly when the second reinforcement cage is hoisted;
after the second steel reinforcement cage is hoisted, providing steel strands, fixedly connecting the steel strands to the tie steel bars at the top in each row of the tie steel bars, pulling the steel strands to enable the tie steel bars to move towards the corresponding first positioning rings, and enabling the second positioning rings on each row of the tie steel bars to be overlapped with the corresponding first positioning rings;
and providing positioning steel bars, and inserting the positioning steel bars into the first positioning rings and the second positioning rings which are overlapped.
3. The method of constructing an underground diaphragm wall joint according to claim 2,
when the tying steel bar is installed, providing a sleeve, a sealing plate and a limiting plate, vertically connecting the limiting plate to the tying steel bar, penetrating the tying steel bar into the sleeve, enabling the limiting plate to be located in the sleeve, sleeving the sealing plate on the tying steel bar, enabling the sealing plate to be sealed and fixed at the end of the sleeve, and transversely fixing the sleeve in the end of the second steel bar cage corresponding to the first positioning ring;
when the second positioning rings of each row are superposed with the first positioning rings of the corresponding row, the limiting plate is abutted against the sealing plate at one end, close to the first positioning rings, of the sleeve.
4. A method of constructing an underground diaphragm wall joint according to claim 1, wherein the butt joint member is provided as an i-steel and comprises a pair of flanges disposed in parallel and a web connected vertically between the pair of flanges, the flanges having first and second ends on either side of the web;
when the butt joint piece is installed, the I-shaped steel is sleeved at the end part of the first steel reinforcement cage in a clamping mode, one side of the web plate is fixedly arranged on the end face of the first steel reinforcement cage, first ends of the pair of wing plates are located on two sides of the end part of the first steel reinforcement cage and are fixedly connected with the end part of the first steel reinforcement cage, and second ends of the pair of wing plates and the other side of the web plate are enclosed to form the butt joint groove;
and when the plug-in assembly is installed, the plug-in assembly is fixedly arranged on the other side of the web plate.
5. The method of constructing an underground diaphragm wall joint according to claim 4, wherein a grout stop plate is provided when the butt joint member is installed, the grout stop plate is provided with flexibility, the grout stop plate is fixedly arranged at the first end of the wing plate and is positioned at the side of the wing plate far away from the first reinforcement cage, and the grout stop plate part extends out of the wing plate and is blocked at the side part of the first reinforcement cage;
when the first steel reinforcement cage is hung in the first trough section of the first construction section, the grout stopping plate is attached to the trough wall of the first trough section.
6. The method of constructing an underground diaphragm wall joint according to claim 4,
when the butt joint piece is installed, a bottom plate, a side plate and a steel wire rope are provided, the bottom plate is installed on the bottom surface of the I-shaped steel corresponding to the butt joint groove and fixedly connected with the bottom surface of the splicing assembly, a positioning groove arranged in parallel with the web plate is formed in the top surface of the provided bottom plate, a groove is formed in the side plate corresponding to the second end of the wing plate, the side plate is clamped on the second ends of the pair of wing plates through the groove, the bottom of the side plate is inserted into the positioning groove, and the side plate and the web plate are connected through the steel wire rope in a pulling mode;
before pouring the first construction section, in the design position department excavation of first construction section forms first groove section, and to the design position of second construction section extend the excavation form with the extension groove section of first groove section intercommunication, will first steel reinforcement cage is transferred to in the first groove section, and makes the bottom plate with the curb plate is located in the extension groove section, the both sides of curb plate support lean on in the cell wall of extension groove section.
7. The method for constructing an underground diaphragm wall joint according to claim 6, wherein when the butt joint member is installed, a first pull ring and a second pull ring are provided, at least one row of the first pull rings is fixedly arranged on the other side of the web, each row of the first pull rings is distributed at intervals along the height direction of the web and is staggered with the splicing assembly, at least one row of the second pull rings is fixedly arranged on one side of the side plate close to the web, so that the first pull rings and the second pull rings are arranged in a one-to-one correspondence manner, and the steel wire rope passes through one row of the first pull rings and the corresponding row of the second pull rings to connect the pull joints of the side plate and the web.
8. The method of constructing an underground diaphragm wall joint according to claim 6, wherein the wire rope is released and the side plate is lifted out after the concrete of the first construction section reaches a set strength.
9. The method of constructing an underground diaphragm wall joint according to claim 4, wherein when the socket assembly is installed, a steel plate is provided, the steel plate is vertically connected to the bottom of the docking slot, the steel plate is positioned in the middle of the docking slot and is generally arranged in the height direction of the web, a first reinforcing steel bar cage and a second reinforcing steel bar cage are respectively bound and fixed to both sides of the steel plate, and the first reinforcing steel bar cage and the second reinforcing steel bar cage are respectively fixedly connected to the other side of the web.
10. The method of constructing an underground diaphragm wall joint according to claim 9, wherein the steel plate has a first side and a second side which are oppositely disposed, and the other side of the web has a first portion connected to the first side of the steel plate and a second portion connected to the second side of the steel plate;
when the first reinforcing steel bar cage is bound and fixed, providing first studs, first stirrups and first vertical steel bars, fixedly arranging a plurality of rows of the first studs on a first side of the steel plate and a first part of the web at intervals, enabling the first studs of the plurality of rows to be distributed at intervals in the vertical direction, hooping and fixing the first stirrups on each row of the first studs, fixedly connecting the first vertical steel bars to the first stirrups, and enabling the first vertical steel bars to be distributed at intervals along the length direction of the first stirrups;
when the ligature is fixed during the second steel reinforcement cage, provide second peg, second stirrup and the vertical reinforcing bar of second, in the second side of steel sheet with a plurality of rows set firmly on the second part of web at the interval the second peg makes a plurality of rows the second peg is along vertical direction interval distribution, will the second stirrup hoop establishes to be fixed in every row on the second peg, with a plurality of the vertical reinforcing bar fixed connection of second in a plurality of on the second stirrup, make a plurality of the vertical reinforcing bar of second is followed the length direction interval distribution of second stirrup.
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| CN202210920775.5A CN115369924B (en) | 2022-08-02 | 2022-08-02 | Construction method of underground diaphragm wall joint |
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| JPH06128949A (en) * | 1992-10-20 | 1994-05-10 | Nippon Steel Corp | Reinforcing structural member for underground continuous wall |
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| CN110528501A (en) * | 2019-07-24 | 2019-12-03 | 青岛理工大学 | High rich water faces sea area diaphragm wall and connects sealing device |
| CN111636412A (en) * | 2020-06-15 | 2020-09-08 | 上海隧道工程有限公司 | Connection structure of underground continuous wall joint and construction method thereof |
| CN113279426A (en) * | 2021-06-21 | 2021-08-20 | 广东省水利水电科学研究院 | Joint structure of lattice type continuous wall and construction method |
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| JPH06128949A (en) * | 1992-10-20 | 1994-05-10 | Nippon Steel Corp | Reinforcing structural member for underground continuous wall |
| CN103410174A (en) * | 2013-08-23 | 2013-11-27 | 上海隧道工程股份有限公司 | GXJ underground continuous wall rubber waterproof connector tool and construction method thereof |
| JP2016118027A (en) * | 2014-12-19 | 2016-06-30 | 株式会社 Ｃｕｐ商会 | Anti-lifting assembly of rebar cage, rebar cage and construction method of cast-in-place pile |
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