CN111364445A - Wall brushing method for grooving underground continuous wall - Google Patents
Wall brushing method for grooving underground continuous wall Download PDFInfo
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- CN111364445A CN111364445A CN202010176990.XA CN202010176990A CN111364445A CN 111364445 A CN111364445 A CN 111364445A CN 202010176990 A CN202010176990 A CN 202010176990A CN 111364445 A CN111364445 A CN 111364445A
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- wall
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- grab bucket
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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
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
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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
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to the technical field of grooving of underground continuous walls, and discloses a grooving wall brushing method for underground continuous walls, which comprises the following steps: grooving the underground diaphragm wall grab bucket; forming a groove by the grab bucket until the bottom of the designed groove is formed, and cleaning the groove; an attached wall brushing device is arranged on the grab bucket; the wall brushing is realized by using the attached wall brushing device to joint the I-shaped steel; placing a reinforcement cage and a perfusion guide pipe, and cleaning the groove again; pouring concrete to form a groove. The wall brushing method for grooving the underground continuous wall provided by the technical scheme of the invention has the advantages that the wall brushing effect is good, and the obtained underground continuous wall has high quality.
Description
Technical Field
The invention relates to the technical field of grooving of underground continuous walls, in particular to a wall brushing method for grooving of underground continuous walls.
Background
When the underground continuous wall is grooved, the grab bucket extends outwards to the two ends of the groove section for 20-40 cm beyond excavation when the groove section in the first sequence is excavated, so that a reinforcement cage with an I-shaped steel joint can be smoothly placed; before the concrete of the wall body is poured, sand bags are backfilled to the super-dug positions on two sides to prevent the seepage during the pouring of the concrete. However, in the actual construction process, it is difficult to prevent the concrete from entering the adjacent groove sections in a winding manner and adhering to the I-shaped steel joint sections during pouring. In order to ensure the smooth construction of the second-order groove section, the common method is to pour wall concrete for about 24 hours, and the second-order groove section adopts a method of impacting along the I-shaped steel or rotating, so as to remove residual concrete blocks adhered to the I-shaped steel to the maximum extent.
In the prior art, the common wall brushing method mostly adopts an impact type wall brushing method, namely a steel wire brush is self-made on the side surface of an impact square drill bit or a square heavy hammer, and the concrete attached in an I-shaped steel groove is removed by the impact brush. The wall brushing method mainly adopts a crane and a steel wire rope to lift the wall brushing device for flushing up and down repeatedly.
However, when the steel wire brush in the method meets irregularly distributed concrete blocks, the suspended wall brushing device is easy to slide along the layer, the wall brushing effect is poor, the verticality is difficult to control, and the normal arrangement of the steel reinforcement cage is seriously influenced; meanwhile, a crane occupies a station, a construction machine is replaced, the process conversion is complex, and the crane has high requirement on a site; in addition, the wall brushing time is long, the efficiency is low, and the overall construction comprehensive cost is high.
Disclosure of Invention
The invention aims to provide a wall brushing method for grooving an underground continuous wall, and aims to solve the problem of poor wall brushing effect in the prior art.
The invention is realized in such a way that the wall brushing method for forming the groove on the underground continuous wall comprises the following steps:
grooving the underground diaphragm wall grab bucket;
forming a groove by the grab bucket until the bottom of the designed groove is formed, and cleaning the groove;
an attached wall brushing device is arranged on the grab bucket;
the wall brushing is realized by using the attached wall brushing device to joint the I-shaped steel;
placing a reinforcement cage and a perfusion guide pipe, and cleaning the groove again;
pouring concrete to form a groove.
Optionally, before the step of installing the attached wall brushing device on the grab bucket:
and removing sundries on the outer side wall of the grab bucket.
Optionally, the step of installing an attached wall brushing device on the grab bucket includes:
sleeving a buckle on the lower side of the wall attaching type wall brushing device into the bucket teeth at the bottom of the grab bucket and clamping the buckle;
tightly attaching the wall attaching type wall brushing device to the outer side wall of the grab bucket;
connecting a first hanging ring on the upper side of the attached wall brushing device and a second hanging ring of the grooving machine with each other by using a pull rope, and tensioning the pull rope;
and fixing the pull rope by using a U-shaped clamp.
Optionally, the wall brushing device comprises an attachment plate and a plurality of wire rope brushes, and the wire rope brushes are arranged on the surface of the attachment plate.
Optionally, the step of brushing the wall by using the attached wall brushing device to connect the i-steel comprises:
tightly attaching the steel wire rope brush of the attached wall brushing device into a joint of the I-shaped steel;
and starting the grab bucket machine, and repeatedly brushing the wall up and down along the side wall of the I-steel.
And observing the verticality controller of the grab bucket machine operating chamber, and repeatedly brushing the wall at the section of the I-shaped steel until the verticality is recovered when the verticality deviates.
Optionally, the step of brushing the wall by using the attached wall brushing device to connect the i-steel further comprises:
when the steel wire rope brush is forked and bent, the steel wire rope brush is replaced in time.
Optionally, a plurality of the wire rope brushes are arranged in an array.
Optionally, the wire rope brush includes a plurality of wire ropes, and a plurality of the wire ropes are arranged in a spreading manner along a direction deviating from the surface of the attachment plate.
Optionally, the attachment plate has a plurality of fixing holes arranged at intervals, and the wire rope brush is inserted into the fixing holes.
Optionally, two ends of each wire rope brush penetrate through two adjacent fixing holes, and the two ends of each wire rope brush extend in a direction away from the surface of the attachment plate.
Compared with the prior art, the wall brushing method for forming the groove in the underground continuous wall, provided by the invention, is characterized in that the auxiliary hanging type wall brushing device is arranged on the grab bucket, the auxiliary hanging type wall brushing device is butted with the inner side of the I-shaped steel joint when the wall is brushed, the grab bucket controls the grab bucket to move up and down, and then the auxiliary hanging type wall brushing device is driven to repeatedly brush the I-shaped steel joint, so that the wall brushing of the I-shaped steel joint is realized, the normal placement of a subsequent reinforcement cage is ensured, and the concrete pouring quality of the groove section is further improved. Compare in impact type brush wall method, grab bucket when this embodiment directly utilizes grooving need not to occupy the station, and need not change construction machinery, and directly realizes control through the grab bucket machine, and the straightness is controlled easily that hangs down, brush wall effectual, efficient, and the comprehensive cost of construction is lower, the continuous wall body high quality in underground that obtains. The problem of among the prior art, brush the wall effect poor is solved.
Drawings
FIG. 1 is a schematic flow chart of a wall brushing method for grooving underground continuous walls provided by the invention;
FIG. 2 is a schematic diagram of the main structure of a grooving machine and a wall brushing device of the wall brushing method for grooving underground continuous walls;
FIG. 3 is a schematic side structure diagram of a grooving machine and a wall brushing machine of the wall brushing method for grooving underground continuous walls provided by the invention;
FIG. 4 is a schematic structural diagram of a wall brushing device of the underground continuous wall trenching wall brushing method provided by the invention;
FIG. 5 is a schematic structural diagram of an attachment plate of the wall brushing method for forming the groove on the underground continuous wall provided by the invention;
FIG. 6 is a schematic diagram of the arrangement structure of a steel wire rope brush of the wall brushing method for forming the groove in the underground continuous wall provided by the invention;
FIG. 7 is a schematic diagram of the butt joint of the wall brushing device and the I-steel joint in the underground continuous wall trenching wall brushing method provided by the invention.
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.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
The wall brushing method for forming the groove in the underground continuous wall provided by the embodiment of the invention has the advantages that the wall brushing effect is good, and the obtained underground continuous wall has high quality.
Referring to fig. 1, 2 and 3, a preferred embodiment of the present invention is shown.
In the embodiment of the invention, the wall brushing method for grooving the underground continuous wall comprises the following steps:
s10, grooving the grab bucket of the underground diaphragm wall;
s20, forming a groove by the grab bucket until the bottom of the designed groove is formed, and cleaning the groove;
s30, installing the wall brushing device 12 on the grab bucket 11;
s40, brushing the wall by using the joint of the attached wall brushing device 12 to the I-shaped steel;
s50, placing a reinforcement cage and a perfusion guide pipe, and cleaning the groove again;
and S60, pouring concrete to form a groove.
The grab bucket 11 comprises two openable jaw plates 111, the two jaw plates 111 are rotatably arranged at the bottom of the trenching machine 13 and drive the two jaw plates 111 to rotate through a connecting rod so as to open and close the two jaw plates 111, the inner sides of the jaw plates 111 are provided with a cavity, when the two jaw plates 111 are closed, soil can be dug up, when the underground continuous wall is trenched, a trench is dug through the grab bucket 11, an I-shaped steel joint in a first-order trench is positioned at one side edge of the second-order trench, and a concrete block is adhered in the I-shaped steel joint.
Before brushing the wall of the I-steel, a grab bucket 11 is required to be used for digging a groove to expose the I-steel joint on one side of the groove, and the groove is cleaned for the first time so as to facilitate the subsequent movement of the wall attached type wall brushing device 12 and ensure the wall brushing effect.
In this embodiment, the auxiliary hanging wall brushing device 12 is installed on the grab bucket 11, when brushing the wall, the auxiliary hanging wall brushing device 12 is abutted to the inner side of the i-steel joint, the grab bucket 11 controls the vertical movement of the grab bucket 11, and then the auxiliary hanging wall brushing device 12 is driven to repeatedly brush the i-steel joint, so as to brush the wall of the i-steel joint, ensure the normal placement of the subsequent reinforcement cage, and further improve the concrete pouring quality of the groove section. Compare in impact type brush wall method, grab bucket 11 when this embodiment directly utilizes the grooving need not to occupy the station, and need not change construction machinery, and directly realizes control through grab bucket 11 machine, and the straightness is controlled easily that hangs down, brush wall effectual, efficient, and the comprehensive cost of construction is lower, the continuous wall body high quality in underground that obtains.
After the wall is brushed, a steel reinforcement cage and a perfusion guide pipe can be placed, and the groove is cleaned for the second time to ensure the cleanness of the groove so as to ensure the stability of the wall. Then, pouring concrete to form a section of underground continuous wall.
Referring to fig. 4, in an embodiment of the invention, the wall-attached type wall brushing device 12 includes an attachment plate 121 and a plurality of wire rope brushes 122, wherein the wire rope brushes 122 are disposed on the surface of the attachment plate 121.
The wire rope brush 122 is made of a hard material, and when the wall of the I-shaped steel joint is brushed, the concrete block is easily brushed off, and meanwhile, the whole side wall of the I-shaped steel joint can be covered. Certainly, in other embodiments, the brush body can also be a plurality of convex lugs, and is not easy to damage, for example, the lug here can be a plurality of trapezoidal blocks arranged in an array, or in other embodiments, the brush body can also be a whole block of convex plate body, and the I-steel joint is butted through this convex plate body, so that the concrete block is easy to be completely removed, and the description is omitted.
Thus, the plurality of wire rope brushes 122 are arranged in an array.
Specifically, for horizontal and vertical interval evenly arranges, like this, guarantee that the brush body can cover the whole lateral wall that the I-steel connects, brush the wall effectual.
In addition, the wire rope brush 122 includes a plurality of wire ropes, and the plurality of wire ropes are arranged in a spreading manner in a direction away from the surface of the attachment plate 121.
The spreading arrangement described here means that the plurality of wire ropes are arranged away from each other in the direction away from the attachment plate 121, so as to ensure that the formed wire rope brush 122 and the brush body formed by the wire rope brush 122 are covered more completely, the brush wall is more comprehensive, and the effect is better.
Specifically, in this embodiment, each wire rope brush 122 has 6 wire ropes, and each wire rope is formed by winding 7 steel wires around each other.
In this embodiment, the attachment plate 121 has a plurality of fixing holes 121a arranged at intervals, and the wire rope brush 122 is inserted into the fixing holes 121 a.
The fixing holes 121a are arranged in an array, the wire rope brushes 122 are fixed in the fixing holes 121a, and the ends of the wire rope brushes 122 are arranged in a diffusion manner.
In addition, two ends of each wire rope brush 122 are inserted into two adjacent fixing holes 121a, and the two ends of each wire rope brush 122 are arranged to extend in a direction away from the surface of the attachment plate 121.
Thus, the wire rope brush 122 can be fixed without an additional fixing device, and the wire rope brush 122 is hard and is not easy to fall off. Thus, in order to avoid the mutual separation of the steel wire ropes in the steel wire rope brush 122, the middle parts of the steel wire ropes are mutually wound, the wound parts are positioned on one side of the attachment plate 121 facing the jaw plate 111, and the steel wire ropes are in a diffused shape and positioned on one side of the attachment plate 121 deviating from the jaw plate 111, so that the stability of the steel wire rope brush 122 is ensured, and the steel wire rope brush 122 is prevented from separating from the attachment plate 121.
Further, the wound portion of the wire brush 122 is in contact with the outer side wall of the jaw plate 111 of the grapple 11, thereby further securing the stability of the wire brush 122.
Of course, in other embodiments, each fixing hole 121a may also be used to fix a wire rope brush 122 separately, that is, one end of the wire rope brush 122 may be directly welded to the side of the attachment plate 121 facing the jaw plate 111, so as to fix the wire rope brush 122, which is not described herein again.
In this embodiment, when the wall-attached brush 12 is manufactured:
cutting the steel wire rope according to a specified length by using a cutting machine;
winding the wire rope to obtain a wire rope brush 122;
two adjacent fixing holes 121a of the attachment plate 121 are penetrated in opposite directions, and the exposed length of the wire rope brush 122 is kept consistent.
Referring to fig. 4 and 5, in an embodiment of the present invention, the attachment plate 121 is made of a wear-resistant steel plate, the thickness of the steel plate is 15-20 mm, and the size of the steel plate is 680mm × 300mm, so as to ensure better impact performance and good welding performance.
Fixing holes 121a with the diameter of 28-30 mm are cut on the attachment plate 121 every 6-8 cm at intervals, and three rows of six holes are formed; the holes are distributed in parallel or in a quincunx shape to form the array arrangement.
In addition, the upper side of the attachment plate 121 is provided with a double-side welded first hanging ring 1211, the lower side of the attachment plate is provided with a double-side welded buckle 1212, and the hanging ring and the buckle 1212 are made of steel bars with the diameter of 22-25 mm.
Thus, referring to fig. 6, in order to avoid the first hanging ring 1211 and the buckle 1212 from affecting the fixing of the wire rope brush 122, the wire rope brushes 122 on the two sides of the lower portion of the attachment plate 121 are inserted into the two vertically arranged fixing holes 121a, the two steel bars of the buckle 1212 are located in the gap between the two lower middle wire rope brushes 122 on the two sides of the lower portion of the attachment plate 121, and the steel bars of the first hanging ring 1211 are located above the upper wire rope brush 122 on the attachment plate 121. Of course, if necessary, the wire brush 122 may be inserted without passing through the first rings 1211 and the steel bars of the fasteners 1212.
In the embodiment of the invention, before the step of installing the attached wall brushing device 12 on the grab bucket 11:
and impurities on the outer side wall of the grab bucket 11 are removed.
Thus, when the wall-attached type wall brushing device 12 is installed, the vertical position is ensured, and the wall brushing effect is ensured.
In addition, the step of installing the wall-attached type wall brushing device 12 on the grab bucket 11 comprises the following steps:
the buckle 1212 at the lower side of the wall-attached brush 12 is sleeved into the bucket teeth 1111 at the bottom of the grab bucket 11 and clamped tightly;
the wall-attached brushing device 12 is tightly attached to the outer side wall of the grab bucket 11;
a first hanging ring 1211 on the upper side of the attached wall brushing device 12 and a second hanging ring 131 of the grooving machine 13 are connected with each other by a pull rope 14, and the pull rope 14 is tensioned;
the pull string 14 is fixed by a U-shaped clip 141.
The grab bucket 11 is arranged at the bottom of the trenching machine 13, the trenching machine 13 is vertically arranged and drives the wall brushing motion of the attached wall brushing device 12 through the up-and-down motion, the pull rope 14 is in a tensioning state and is fixed through the U-shaped clamp 141, and thus, the vertical position of the attached wall brushing device 12 is ensured so as to brush the wall.
The bucket teeth 1111 are tooth-shaped structures formed by the inner side and the outer side of the jaw plate 111, so that soil can be excavated, the buckle 1212 is directly sleeved on the periphery of the bucket teeth 1111, and the first hanging ring 1211 is tensioned through the pull rope 14 in combination with the above, so that the wall attachment type wall brushing device 12 is stably fixed on the outer side wall of the grab bucket 11 and is convenient to detach.
The teeth 1111 are pointed downward.
In this way, in the actual installation process, since the bucket teeth 1111 are pointed, the buckle 1212 gradually abuts against and engages with the bucket teeth 1111 as the cord 14 is pulled tight, thereby achieving stable fixation of the attached type wall brushing device 12.
Of course, in other embodiments, in order to fix the wall brushing device 12, the wall brushing device can be directly screwed through the side wall of the jaw 111 and the attachment plate 121, and the attachment can be realized by a nut, which is convenient for disassembly.
In an embodiment of the present invention, the number of the wall brushing devices 12 is two, each wall brushing device 12 is disposed on an outer sidewall of a jaw 111 of the grab bucket 11, and the two wall brushing devices 12 are disposed oppositely.
Therefore, the brushing wall of the I-steel joint can be practiced on both sides of the grab bucket 11, the direction does not need to be adjusted, and the use is convenient.
Referring to fig. 7, in an embodiment of the present invention, the step of brushing the wall by using the hanging wall brushing device 12 to connect the h-beam includes:
the wire rope brush 122 of the attached wall brushing device 12 is tightly attached to the joint of the I-shaped steel;
and starting the grab bucket 11 machine, and repeatedly brushing the wall up and down along the side wall of the I-shaped steel.
And observing the verticality controller of the operating chamber of the grab bucket 11 machine, and repeatedly brushing the wall at the section of the I-shaped steel until the verticality is recovered when the verticality deviates.
When the wall is brushed, the grab bucket 11 is moved to be tightly attached to the inside of the I-shaped steel, so that the brushing capacity of the wall brushing device is improved, and the residual concrete blocks on the I-shaped steel can be cleaned as fast as possible.
In a normal state, the perpendicularity is constant, when the wall is brushed, the perpendicularity is deviated, namely, the concrete block is arranged at the section of the surface I-steel, the wall is brushed repeatedly until the displayed perpendicularity is recovered, namely, the section of the surface I-steel is flat, the concrete block falls off, and therefore the whole section of the I-steel joint can be brushed. And no additional instrument is needed, thereby being very convenient.
In addition, the step of brushing the wall by using the attached wall brushing device 12 to connect the I-shaped steel further comprises the following steps:
when the wire rope brush 122 is forked and bent, the wire rope brush 122 is replaced in time.
When the wire rope brush 122 is forked and bent, displayed perpendicularity errors easily occur, and the wall brushing is incomplete, and the wire rope brush 122 is replaced in time to ensure the wall brushing effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A wall brushing method for grooving underground continuous walls is characterized by comprising the following steps:
grooving the underground diaphragm wall grab bucket;
forming a groove by the grab bucket until the bottom of the designed groove is formed, and cleaning the groove;
an attached wall brushing device is arranged on the grab bucket;
the wall brushing is realized by using the attached wall brushing device to joint the I-shaped steel;
placing a reinforcement cage and a perfusion guide pipe, and cleaning the groove again;
pouring concrete to form a groove.
2. The underground continuous wall trenching wall brushing method according to claim 1, wherein the step of installing an attached wall brushing device on the grab bucket is preceded by the steps of:
and removing sundries on the outer side wall of the grab bucket.
3. The underground continuous wall trenching wall brushing method according to claim 2, wherein the step of installing an attached wall brushing device on the grab bucket comprises the following steps:
sleeving a buckle on the lower side of the wall attaching type wall brushing device into the bucket teeth at the bottom of the grab bucket and clamping the buckle;
tightly attaching the wall attaching type wall brushing device to the outer side wall of the grab bucket;
connecting a first hanging ring on the upper side of the attached wall brushing device and a second hanging ring of the grooving machine with each other by using a pull rope, and tensioning the pull rope;
and fixing the pull rope by using a U-shaped clamp.
4. The underground continuous wall grooving wall brushing method according to any one of claims 1 to 3, wherein the wall brushing device comprises an attachment plate and a plurality of wire rope brushes, and the wire rope brushes are arranged on the surface of the attachment plate.
5. The underground continuous wall trenching wall brushing method according to claim 4, wherein the step of brushing the wall of the joint of the I-shaped steel by using the wall attaching type wall brushing device comprises the following steps:
tightly attaching the steel wire rope brush of the attached wall brushing device into a joint of the I-shaped steel;
and starting the grab bucket machine, and repeatedly brushing the wall up and down along the side wall of the I-steel.
And observing the verticality controller of the grab bucket machine operating chamber, and repeatedly brushing the wall at the section of the I-shaped steel until the verticality is recovered when the verticality deviates.
6. The underground continuous wall trenching wall brushing method according to claim 5, wherein the step of brushing the wall of the joint of the I-shaped steel by using the wall attaching type wall brushing device further comprises the following steps:
when the steel wire rope brush is forked and bent, the steel wire rope brush is replaced in time.
7. The method for brushing the wall of the underground continuous wall in the groove manner as claimed in claim 4, wherein a plurality of the steel wire rope brushes are arranged in an array manner.
8. The method for brushing the wall of the underground continuous wall in the groove manner as claimed in claim 4, wherein the steel wire rope brushes comprise a plurality of steel wire ropes, and the steel wire ropes are arranged in a diffusion manner along the direction which is far away from the surface of the attachment plate.
9. The underground continuous wall grooving and wall brushing method according to claim 4, wherein the attachment plate is provided with a plurality of fixing holes arranged at intervals, and the steel wire rope brushes are arranged in the fixing holes in a penetrating mode.
10. The method for brushing the wall of the underground continuous wall during the grooving process as claimed in claim 9, wherein two ends of each steel wire rope brush penetrate through two adjacent fixing holes, and the two ends of each steel wire rope brush extend in a direction away from the surface of the attachment plate.
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CN113216269A (en) * | 2021-04-15 | 2021-08-06 | 中国建筑一局(集团)有限公司 | Wall brushing device for underground diaphragm wall after grooving |
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Application publication date: 20200703 |