CN114250762A - Grooving construction method for underground diaphragm wall foundation - Google Patents

Grooving construction method for underground diaphragm wall foundation Download PDF

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Publication number
CN114250762A
CN114250762A CN202111423925.3A CN202111423925A CN114250762A CN 114250762 A CN114250762 A CN 114250762A CN 202111423925 A CN202111423925 A CN 202111423925A CN 114250762 A CN114250762 A CN 114250762A
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China
Prior art keywords
diaphragm wall
underground diaphragm
rope saw
construction method
foundation
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CN202111423925.3A
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Chinese (zh)
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CN114250762B (en
Inventor
杨帆
李健
高虎
孙伟
李栋
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China Railway No 10 Engineering Group Co Ltd
Third Engineering Co Ltd of China Railway No 10 Engineering Group Co Ltd
Jinan Survey and Design Institute of China Railway No 10 Engineering Group Co Ltd
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China Railway No 10 Engineering Group Co Ltd
Third Engineering Co Ltd of China Railway No 10 Engineering Group Co Ltd
Jinan Survey and Design Institute of China Railway No 10 Engineering Group Co Ltd
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Publication of CN114250762A publication Critical patent/CN114250762A/en
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    • 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
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • 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

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Abstract

The invention relates to the technical field of building construction, in particular to a grooving construction method for an underground continuous wall foundation, which comprises the following steps: s1, leveling the field; s2, cutting edges; and S3, excavating to form grooves. The construction method of the invention has the advantages of small disturbance to the stratum by cutting and digging the groove, no slurry in the construction process, easy realization of civilized construction, no need of breaking the pile head, low cost, short construction period and reliable quality.

Description

Grooving construction method for underground diaphragm wall foundation
Technical Field
The invention relates to the technical field of building construction, in particular to a grooving construction method for an underground diaphragm wall foundation.
Background
The underground continuous wall is a reinforced concrete wall which is formed by digging a long and narrow deep groove on the ground in foundation engineering, hoisting a reinforcement cage in the deep groove and pouring concrete, and is used as a structure for intercepting water, preventing seepage, bearing and retaining water.
At present, a commonly used construction method for grooving of a rock stratum geological underground continuous wall foundation is a double-wheel milling and rotary drilling combined impact drill and grab bucket grooving machine; however, the construction cost of the double-wheel milling is high; the construction efficiency of the rotary drilling combined with the impact drilling and the grab bucket trenching machine is low, so that the construction process for trenching the rock stratum geological underground continuous wall foundation needs to be improved.
Disclosure of Invention
Aiming at certain defect or defects in the prior art, the invention provides a grooving construction method for an underground continuous wall foundation.
In order to solve the above technical problems, the present invention is solved by the following technical solutions.
A grooving construction method for an underground diaphragm wall foundation comprises the following steps:
s1, leveling the field
Carrying out leveling treatment on the ground field of the underground diaphragm wall;
s2, edge cutting
Cutting the edge of the foundation groove of the underground diaphragm wall through a grooving device to form cutting seams positioned on two sides of the foundation groove of the underground diaphragm wall;
s3, excavating to form grooves
And (5) excavating grooves on the ground between the cutting seams on the two sides in the step S2.
The construction method forms the foundation groove of the underground diaphragm wall by cutting and excavating the groove, has small disturbance to the stratum, has no mud in the construction process, is easy to realize civilized construction, simultaneously, does not need equipment such as a broken pile head and the like, has low cost, short construction period and reliable quality.
Preferably, step S2 specifically includes the following steps:
s21, arranging hole sites along the edge of the foundation trench of the underground diaphragm wall;
s22, drilling holes at the hole position arrangement position in the step S21 to form mounting holes;
s23, installing a guide mechanism in the corresponding mounting hole according to the cutting position, and installing a wire saw cutting machine and a wire saw;
and S24, driving the rope saw to cut the edge of the underground continuous wall through the rope saw cutting machine.
According to the invention, the rope saw is driven by the rope saw cutting machine to cut the edge of the underground continuous wall foundation groove, so that the integral stability of the rock wall of the underground continuous wall foundation groove is good, the disturbance to the stratum is small, and the subsequent grooving of the underground continuous wall foundation groove is facilitated.
Preferably, the hole sites located on the same edge of the underground diaphragm wall foundation trench in the step S21 are spaced, and the corresponding hole sites located between the two side edges of the underground diaphragm wall foundation trench are distributed in a staggered manner.
According to the invention, through the way that the hole sites on the same edge of the underground continuous wall foundation groove are arranged at intervals (the distance is required to be increased as much as possible during actual construction) and the corresponding hole sites between the two side edges of the underground continuous wall foundation groove are distributed in a staggered mode, the risk of rock wall collapse between the serial holes and the adjacent hole sites can be preferably reduced.
Preferably, in step S22, a down-the-hole drill is used to drill the hole, preferably the hole.
Preferably, in step S3, trenching is performed using a long arm excavator.
Preferably, the grooving device comprises guide mechanisms arranged in the corresponding two mounting holes, each guide mechanism comprises a first bottom plate and a second bottom plate, the first bottom plate and the second bottom plate are provided with a first guide rod and a second guide rod which extend into the corresponding mounting holes, the first guide rod and the second guide rod are respectively provided with a mounting frame positioned in the corresponding mounting holes, the mounting frames are respectively provided with a rotatable guide wheel, the upper ends of the first guide rod and the second guide rod are respectively provided with a rotatable first routing wheel, and the first bottom plate is also provided with a rotatable second routing wheel; still including locating subaerial rope saw cutting machine, be equipped with the rope saw that passes through first wire wheel, leading wheel and second wire wheel in proper order on the rope saw cutting machine, all be equipped with the trough that supplies the rope saw to pass on first bottom plate and the second bottom plate.
Through the structure of the invention, the rope saw cutting machine drives the rope saw to rotate for cutting, and in the cutting process, the rope saw cutting machine moves on the ground, so that the rope saw between the two mounting holes moves downwards to cut the edge of the foundation groove of the underground continuous wall.
Preferably, the first bottom plate is provided with a tensioning mechanism, the tensioning mechanism comprises an installation plate arranged on the first bottom plate, the end part of the installation plate is provided with a thread cylinder, the thread of the thread cylinder is provided with a threaded rod penetrating through the thread cylinder, and the upper end of the threaded rod is provided with a tensioning wheel used for tensioning the rope saw.
According to the rope saw, the rope saw can be tensioned through the tensioning wheel, and the rope is preferably prevented from being clamped due to the fact that the rope saw is separated from the second wire travelling wheel in the cutting process.
Preferably, the installation frame is internally provided with an extrusion wheel for limiting the rope saw, and the rope saw in the installation frame is preferably prevented from falling off the extrusion wheel to cause rope clamping.
Preferably, the first guide rod and the second guide rod can be spliced.
According to the rope saw, the first guide rod and the second guide rod can be spliced, so that the rope saw is prevented from being broken due to the fact that the cutting area is too large.
Drawings
FIG. 1 is a process flow chart of a trenching construction method of an underground diaphragm wall foundation in example 1;
FIG. 2 is a schematic view of the hole site arrangement in example 1;
FIG. 3 is a schematic view of an underground diaphragm wall foundation trenching apparatus of example 1;
FIG. 4 is a schematic view of a guide mechanism in embodiment 1;
fig. 5 is an enlarged schematic view of a portion a in fig. 4.
Detailed Description
For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.
Example 1
As shown in fig. 1, the embodiment provides a grooving construction method for an underground diaphragm wall foundation, which includes the following steps:
s1, leveling the field
The ground field of the foundation groove of the underground diaphragm wall is leveled, so that the subsequent in-situ installation and work of a down-the-hole drill, a guide mechanism, a wire saw cutting machine 100, a long-arm excavator and the like are facilitated;
s2, edge cutting
Cutting the edge of the foundation groove of the underground diaphragm wall through a grooving device to form cutting seams positioned on two sides of the foundation groove of the underground diaphragm wall;
s3, excavating to form grooves
And (5) excavating grooves on the ground between the cutting seams on the two sides in the step S2.
According to the construction method in the embodiment, the underground diaphragm wall foundation groove is formed by cutting and excavating the groove, the disturbance to the stratum is small, no slurry is generated in the construction process, civilized construction is easy to realize, meanwhile, equipment such as a pile head breaking device is not needed in the construction method, the cost is low, the construction period is short, and the quality is reliable.
Referring to fig. 2 to 3, in the present embodiment, the step S2 specifically includes the following steps:
s21, arranging hole sites along the edge of the foundation trench of the underground diaphragm wall;
s22, drilling holes at the hole position arrangement position in the step S21 to form mounting holes 102;
s23, installing a guide mechanism in the corresponding installation hole 102 according to the cutting position, and installing the rope saw cutting machine 100 and the rope saw 101;
and S24, driving the rope saw 101 to cut the edge of the underground continuous wall through the rope saw cutting machine 100.
In this embodiment, the hole sites located on the same edge of the underground diaphragm wall foundation trench in step S21 are arranged at intervals, and the corresponding hole sites between the two side edges of the underground diaphragm wall foundation trench are distributed in a staggered manner.
In this embodiment, the positions of the hole sites are accurately located by using a total station, wherein the hole sites located on the same edge of the underground diaphragm wall foundation trench are distributed at intervals (the interval is 600cm in this embodiment), and the hole sites corresponding to the edges on both sides of the underground diaphragm wall foundation trench are distributed in a staggered manner, so as to reduce the risk of hole string and collapse of the rock wall between adjacent hole sites.
In this embodiment, in step S22, a down-the-hole drill is used to drill a hole, and after the drill is in place, the drill aligns with the center of the hole to drill a hole; in the actual drilling process, the drill bit is lifted when the drill drills about 30cm, the hole position deviation condition is checked, and the deviation exceeds 2cm and needs to be adjusted; meanwhile, whether the drilling machine is kept horizontal or not is often checked, and the drilling machine needs to be adjusted in time when deflection is found; in the embodiment, the drilling speed of the drilling machine is slow and uniform, when stratum is broken and hole expansion is serious, the drilling is stopped, and the drilling is carried out after grouting treatment; wherein, utilize the high-pressure wind of air compressor machine to blow out the drilling mud in the drilling, avoid influencing the cutting of rope saw 101.
In the embodiment, in order to meet the requirements of the grooving width and the verticality of the underground diaphragm wall, the grooving width is controlled by increasing 3cm compared with the design.
In this embodiment, in step S3, a long arm excavator is used to perform trenching.
In the embodiment, a long-arm excavator is used for crushing and excavating the stone slag in layers, in the actual excavating process, one long-arm excavator is adopted to carry out crushing treatment with a crushing hammer, and the other long-arm excavator is adopted to carry out excavation with a narrow bucket of 80 cm; along with the deep excavation, the faster the underground water infiltration, the drainage is carried out by utilizing the drill holes which are not in the excavation range, and the breaking hammer is prevented from working in water.
In this embodiment, for the part that is not cut when the rope saw 101 is driven by the rope saw cutting machine 100 to cut the edge of the underground diaphragm wall, the long-arm excavator is used to install the hydraulic circular saw for cutting, and then crushing excavation is performed.
Example 2
As shown in fig. 3 to 5, the embodiment provides an underground diaphragm wall foundation grooving device, which includes a guide mechanism installed in a corresponding installation hole 102, the guide mechanism includes a first bottom plate 110 and a second bottom plate 120, the first bottom plate 110 and the second bottom plate 120 are provided with a first guide rod 111 and a second guide rod 121 extending into the corresponding installation hole 102, the first guide rod 111 and the second guide rod 121 are both provided with an installation frame 130 located in the corresponding installation hole 102, the installation frame 130 is both provided with a rotatable guide wheel 210, the upper ends of the first guide rod 111 and the second guide rod 121 are both provided with a rotatable first routing wheel 140, and the first bottom plate 110 is further provided with a rotatable second routing wheel 150; the rope saw cutting machine 100 is arranged on the ground, the rope saw cutting machine 100 is provided with a rope saw 101 which sequentially passes through the first wire routing wheel 140, the guide wheel 210 and the second wire routing wheel 150, and the first bottom plate 110 and the second bottom plate 120 are both provided with wire routing grooves 230 for the rope saw 101 to pass through.
In this embodiment, the first bottom plate 110 and the second bottom plate 120 are both fixed on the ground after the leveling of the foundation trench of the underground diaphragm wall by bolts, and the first guide rod 111 and the second guide rod 121 are respectively fixed on the corresponding first bottom plate 110 and the corresponding second bottom plate 120 and extend into the corresponding mounting hole 102; in this embodiment, when the rope saw 101 is installed, one end of the rope saw sequentially passes through the first routing wheel 140, extends into one installation hole 102 from the routing groove 230, extends out of the installation hole 102 under the guidance of the guide wheel 210, then extends into the other installation hole 102, extends out of the installation hole 102 from the installation groove 230 under the guidance of the guide wheel 102, passes through the rope saw cutting machine 100 through the second routing wheel 150, and is connected with the other end of the rope saw 101, so that the rope saw 101 between the two installation holes 102 is located on the ground; when the cutting machine is used for cutting, the rope saw cutting machine 100 drives the rope saw 101 to rotate for cutting, and in the cutting process, the rope saw cutting machine 100 moves on the ground, so that the rope saw 101 between the two mounting holes 102 moves downwards to cut the edge of the foundation groove of the underground continuous wall.
In the actual cutting process, the cutting seam between the two mounting holes 102 needs to be watered and cooled, and meanwhile, in order to avoid that broken slag enters the cutting seam to cause rope clamping, foam rubber needs to be injected into the cutting seam in time in the cutting process; wherein, before starting rope saw cutting machine 100, artifical slow pulling rope saw 101 cuts into the fillet with the right angle position of underground continuous wall foundation groove ground department to reduce the cutting resistance, be convenient for follow-up rope saw cutting machine 100 drives rope saw 101 and cuts.
In this embodiment, the tensioning mechanism 160 is disposed on the first base plate 110, the tensioning mechanism 160 includes a mounting plate 310 disposed on the first base plate 110, a threaded cylinder 320 is disposed at an end of the mounting plate 310, a threaded rod 330 penetrating through the threaded cylinder 320 is disposed in the threaded cylinder 320, and a tensioning wheel 331 for tensioning the rope saw 101 is disposed at an upper end of the threaded rod 330.
Through the structure in the embodiment, the tensioning wheel 331 can tension the rope saw 101, and it is better to avoid the rope saw 101 getting out of the second wire-moving wheel 150 to cause rope jamming during the cutting process.
In this embodiment, the installation frame 130 is provided with an extrusion wheel 220 for limiting the rope saw 101, and preferably, the rope saw 101 in the installation frame 130 is limited, so as to prevent the rope saw 101 from being stuck due to the extrusion wheel 220 being separated from the rope saw.
In this embodiment, the first guide rod 111 and the second guide rod 121 can be spliced.
Through the arrangement in the embodiment, the first guide rod 111 and the second guide rod 121 can be spliced, so that the length of the first guide rod and the second guide rod extending into the mounting hole 102 can be adjusted, and the rope saw 101 is prevented from being broken due to the fact that the cutting area is too large because the extending length of the first guide rod and the second guide rod is too large; wherein, the first guide rod 111 and the second guide rod 121 can be formed by connecting a plurality of guide rods through screw threads.
In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.

Claims (9)

1. A grooving construction method for an underground diaphragm wall foundation comprises the following steps:
s1, leveling the field
Carrying out leveling treatment on the ground field of the foundation trench of the underground diaphragm wall;
s2, edge cutting
Cutting the edge of the foundation groove of the underground diaphragm wall through a grooving device to form cutting seams positioned on two sides of the foundation groove of the underground diaphragm wall;
s3, excavating to form grooves
And (5) excavating grooves on the ground between the cutting seams on the two sides in the step S2.
2. The grooving construction method for the underground diaphragm wall foundation according to claim 1, wherein: step S2 specifically includes the following steps:
s21, arranging hole sites along the edge of the foundation trench of the underground diaphragm wall;
s22, drilling holes at the hole position arrangement position in the step S21 to form mounting holes (102);
s23, installing a guide mechanism in the corresponding installation hole (102) according to the cutting position, and installing a rope saw cutting machine (100) and a rope saw (101);
and S24, driving a rope saw (101) to cut the edge of the foundation groove of the underground continuous wall through a rope saw cutting machine (100).
3. The grooving construction method for the underground diaphragm wall foundation according to claim 2, wherein: in the step S21, the hole sites on the same edge of the underground diaphragm wall foundation trench are arranged at intervals, and the corresponding hole sites between the edges of the two sides of the underground diaphragm wall foundation trench are distributed in a staggered manner.
4. The grooving construction method for the underground diaphragm wall foundation according to claim 2, wherein: in step S22, a down-the-hole drill is used to drill a hole.
5. The grooving construction method for the underground diaphragm wall foundation according to claim 1, wherein: in step S3, a long arm excavator is used to perform trenching.
6. The underground diaphragm wall foundation trenching construction method as claimed in any one of claims 1 to 5, wherein: the grooving device comprises guide mechanisms arranged in two corresponding mounting holes (102), each guide mechanism comprises a first base plate (110) and a second base plate (120), a first guide rod (111) and a second guide rod (121) extending into the corresponding mounting holes (102) are arranged on the first base plate (110) and the second base plate (120), mounting frames (130) located in the corresponding mounting holes (102) are arranged on the first guide rod (111) and the second guide rod (121), rotatable guide wheels (210) are arranged in the mounting frames (130), rotatable first routing wheels (140) are arranged at the upper ends of the first guide rod (111) and the second guide rod (121), and rotatable second routing wheels (150) are arranged on the first base plate (110); the rope saw cutting machine is characterized by further comprising a rope saw cutting machine (100) arranged on the ground, a rope saw (101) sequentially passing through the first routing wheel (140), the guide wheel (210) and the second routing wheel (150) is arranged on the rope saw cutting machine (100), and wire routing grooves (230) for the rope saw (101) to pass through are formed in the first bottom plate (110) and the second bottom plate (120).
7. The underground diaphragm wall foundation trenching construction method as claimed in claim 6, wherein: be equipped with straining device (160) on first bottom plate (110), straining device (160) is including locating mounting panel (310) on first bottom plate (110), and the tip of mounting panel (310) is equipped with screw thread section of thick bamboo (320), and screw thread section of thick bamboo (320) internal thread is equipped with threaded rod (330) that pass through screw thread section of thick bamboo (320), and the upper end of threaded rod (330) is equipped with take-up pulley (331) that are used for tensioning rope saw (101).
8. The underground diaphragm wall foundation trenching construction method as claimed in claim 6, wherein: an extrusion wheel (220) used for limiting the rope saw (101) is arranged in the mounting frame (130).
9. The underground diaphragm wall foundation trenching construction method as claimed in claim 6, wherein: the first guide rod (111) and the second guide rod (121) can be spliced.
CN202111423925.3A 2021-11-26 2021-11-26 Underground diaphragm wall foundation grooving construction method Active CN114250762B (en)

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Application Number Priority Date Filing Date Title
CN202111423925.3A CN114250762B (en) 2021-11-26 2021-11-26 Underground diaphragm wall foundation grooving construction method

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Application Number Priority Date Filing Date Title
CN202111423925.3A CN114250762B (en) 2021-11-26 2021-11-26 Underground diaphragm wall foundation grooving construction method

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CN114250762A true CN114250762A (en) 2022-03-29
CN114250762B CN114250762B (en) 2023-06-20

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101768926A (en) * 2009-12-29 2010-07-07 中铁隧道集团有限公司 Diamond rope saw static force cutting method
CN201693659U (en) * 2010-06-29 2011-01-05 廊坊凯博建设机械科技有限公司 Portable concrete component cutting equipment
CN104500075A (en) * 2014-11-19 2015-04-08 江苏鼎达建筑新技术有限公司 Construction method of cutting underground obstacle with wire saw
CN112060361A (en) * 2020-09-04 2020-12-11 江苏省建筑工程集团有限公司 Wire saw cutting device for reinforced concrete
CN212744002U (en) * 2020-06-01 2021-03-19 胡子涵 Anti-blocking excavating device for vertical shaft

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101768926A (en) * 2009-12-29 2010-07-07 中铁隧道集团有限公司 Diamond rope saw static force cutting method
CN201693659U (en) * 2010-06-29 2011-01-05 廊坊凯博建设机械科技有限公司 Portable concrete component cutting equipment
CN104500075A (en) * 2014-11-19 2015-04-08 江苏鼎达建筑新技术有限公司 Construction method of cutting underground obstacle with wire saw
CN212744002U (en) * 2020-06-01 2021-03-19 胡子涵 Anti-blocking excavating device for vertical shaft
CN112060361A (en) * 2020-09-04 2020-12-11 江苏省建筑工程集团有限公司 Wire saw cutting device for reinforced concrete

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