CN110700259A - Breaking device and method for breaking super-poured concrete of underground continuous wall in advance - Google Patents
Breaking device and method for breaking super-poured concrete of underground continuous wall in advance Download PDFInfo
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- CN110700259A CN110700259A CN201911077080.XA CN201911077080A CN110700259A CN 110700259 A CN110700259 A CN 110700259A CN 201911077080 A CN201911077080 A CN 201911077080A CN 110700259 A CN110700259 A CN 110700259A
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- 239000004567 concrete Substances 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 199
- 239000007924 injection Substances 0.000 claims abstract description 199
- 238000005192 partition Methods 0.000 claims abstract description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000002787 reinforcement Effects 0.000 claims abstract description 29
- 238000010276 construction Methods 0.000 claims abstract description 28
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 41
- 239000010959 steel Substances 0.000 claims description 41
- 238000000926 separation method Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000011178 precast concrete Substances 0.000 claims 1
- 239000000428 dust Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 229910001335 Galvanized steel Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000008397 galvanized steel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002985 plastic film Substances 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
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
- E02D9/005—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof removing the top of placed piles of sheet piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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Abstract
The invention discloses a breaking device and a method for breaking super-poured concrete of an underground continuous wall in advance, wherein the device comprises a bottom partition plate, a plurality of rectangular openings are arranged on the bottom partition plate, and an external injection pipe and an internal injection pipe are arranged on the bottom partition plate; the method comprises the steps of firstly, mounting a breaking device; step two, isolating and protecting longitudinal bars of the reinforcement cage; step three, placing a reinforcement cage; step four, pouring concrete; fifthly, breaking the super-poured concrete by using high-pressure water; sixth, demolish the demolition unit; seventh, cleaning the breaking device; and eighthly, chiseling the super-poured concrete at the top of the underground continuous wall. According to the invention, the external injection pipe and the internal injection pipe are arranged on the bottom partition plate, so that the super-poured concrete can be broken before being completely hardened, and the subsequent process construction can be carried out only by simply treating the top of the underground continuous wall in the later construction, so that the construction speed is greatly increased, the construction cost is reduced, the breaking noise in the construction is low, and the dust pollution is less.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a breaking device and a breaking method for breaking super-poured concrete of an underground continuous wall in advance.
Background
With the vigorous development of the building industry in China, the number of deep foundation pits is increased, and underground continuous walls in the support of the deep foundation pits are a common support form. In order to ensure the construction quality of a wall body structure in the construction of an underground continuous wall, the technical measure of over-pouring concrete by 0.5-1 m above the designed elevation is often adopted, so that the over-poured concrete is broken in the later construction. The existing breaking method is mainly manual chiseling and has the defects of difficult chiseling, long time consumption, high noise, more dust pollution and the like.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a breaking device for breaking the super-poured concrete of the underground diaphragm wall in advance aiming at the defects in the prior art, the structural design is reasonable, the construction is convenient, the external injection pipe and the internal injection pipe are arranged on the bottom division plate, the super-poured concrete can be broken before being completely hardened, the subsequent process construction can be carried out only by simply processing the top of the underground diaphragm wall in the later construction, the construction speed is greatly accelerated, the construction cost is reduced, and the defects of large breaking noise and much dust pollution in the traditional construction method are avoided.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a device for breaking out super-grouted concrete of underground continuous wall in advance which characterized in that: the bottom partition plate comprises a rectangle, a plurality of rectangular openings are arranged on the bottom partition plate at equal intervals along the length direction of the bottom partition plate, an external injection pipe and an internal injection pipe are sequentially arranged on the bottom partition plate from inside to outside, the internal injection pipe comprises a main injection pipe, the external injection pipe and the main injection pipe are both annular injection pipes, the inner ring of the main injection pipe is connected with a plurality of auxiliary injection pipes which are communicated with the main injection pipe, two adjacent auxiliary injection pipes are uniformly arranged between the rectangular openings, a plurality of injection holes are formed in pipe walls on two sides of the external injection pipe, the main injection pipe and the auxiliary injection pipes, two water injection pipes are symmetrically arranged on the external injection pipe and the internal injection pipes, a plurality of positioning steel pipes are further arranged on the bottom partition plate, and a lifting rope is arranged in each positioning steel pipe in a penetrating mode.
Foretell abolish underground continuous wall surpasses demolition device of concreting, its characterized in that: the outer injection pipe, the main injection pipe and the auxiliary injection pipe are arranged in parallel with the bottom partition plate, the main injection pipe and the auxiliary injection pipe are fixedly connected, and the outer injection pipe and the main injection pipe are fixedly installed on the bottom partition plate through positioning pipe rings.
Foretell abolish underground continuous wall surpasses demolition device of concreting, its characterized in that: the bottom division plate is a rectangular steel plate matched with the underground continuous wall to be constructed, and the positioning pipe ring is fixedly arranged on the bottom division plate.
Foretell abolish underground continuous wall surpasses demolition device of concreting, its characterized in that: the outer injection pipe and the main injection pipe are rectangular annular injection pipes, the auxiliary injection pipe is arranged along the width direction of the bottom partition plate, and two ends of the auxiliary injection pipe are connected to the inner ring pipe wall of the main injection pipe.
Foretell abolish underground continuous wall surpasses demolition device of concreting, its characterized in that: the rectangular opening is arranged in a rectangular frame formed by the auxiliary injection pipe and the main injection pipe.
Foretell abolish underground continuous wall surpasses demolition device of concreting, its characterized in that: the positioning steel pipe is parallel to the bottom partition plate, and two ends of the positioning steel pipe are fixedly connected with the bottom partition plate through lifting rings.
Foretell abolish underground continuous wall surpasses demolition device of concreting, its characterized in that: the water injection pipe and the bottom partition board mutually perpendicular, two water injection pipes on the outside injection pipe are respectively laid in the middle of the two sides of the outside injection pipe and are mutually communicated with the outside injection pipe, two water injection pipes on the inside injection pipe are respectively connected on two auxiliary injection pipes and are mutually communicated with the main injection pipe through the auxiliary injection pipes.
Foretell abolish underground continuous wall surpasses demolition device of concreting, its characterized in that: and a plurality of binding holes are formed in the two sides of the bottom partition plate.
Meanwhile, the invention also discloses a method for breaking the super-poured concrete of the underground continuous wall in advance, which has simple steps and is characterized by comprising the following steps:
step one, installation of a breaking device: binding and fixing a bottom partition plate of the breaking device between longitudinal bars on two sides of a reinforcement cage of the underground continuous wall by adopting steel wires, wherein the elevation of the lower end surface of the bottom partition plate is higher than the designed elevation of the top of the underground continuous wall, and a plurality of binding holes for fixing the steel wires are formed in two sides of the bottom partition plate;
step two, isolation and protection of the longitudinal bars of the reinforcement cage: PVC sleeves are sleeved on a plurality of longitudinal ribs of the underground continuous wall reinforcement cage, the PVC sleeves are arranged above the bottom partition plate, and a gap is formed between the lower end of each PVC sleeve and the upper end face of the bottom partition plate;
step three, placing a reinforcement cage: hoisting the underground continuous wall reinforcement cage provided with the breaking device into the groove section to be constructed by adopting a hoisting tool, wherein one side of the underground continuous wall reinforcement cage provided with the breaking device is arranged upwards, and two ends of a hoisting rope are respectively placed at the tops of two sides of the groove section to be constructed;
step four, pouring concrete: pouring concrete into the groove section to be constructed, in which the reinforcement cage of the underground continuous wall is placed, to form the underground continuous wall, wherein 0.5-1 m of super-poured concrete is arranged on the upper part of the underground continuous wall;
step five, breaking the super-poured concrete by using high-pressure water: after the super-poured concrete poured in the fourth step reaches initial setting, injecting high-pressure water into the outer injection pipe and the inner injection pipe through the four water injection pipes, and breaking the surrounding super-poured concrete in the horizontal direction through the injection holes until the super-poured concrete above the bottom partition plate is separated from the underground continuous wall at the lower part, and stopping introducing the high-pressure water into the water injection pipes;
step six, dismantling the breaking device: after the concrete of the underground continuous wall to be poured reaches final setting, lifting two ends of a lifting rope by a lifting appliance to integrally remove the breaking device, the super-poured concrete above the bottom partition plate and the PVC sleeve from longitudinal ribs of the reinforcement cage of the underground continuous wall;
seventhly, cleaning the breaking device: cleaning the lifted super-poured concrete on the breaking device, and washing the breaking device clean;
chiseling the super-poured concrete at the top of the underground continuous wall: and after the whole construction of the underground continuous wall is finished and the earthwork is excavated, chiseling the super-poured concrete above the designed elevation of the underground continuous wall.
Compared with the prior art, the invention has the following advantages:
1. according to the breaking device adopted by the invention, the external injection pipe and the internal injection pipe are arranged on the bottom partition plate, and the super-poured concrete above the bottom partition plate can be removed in advance through high-pressure water before the super-poured concrete is finally set, so that the construction efficiency can be effectively improved, the construction time can be shortened, the labor intensity of constructors can be effectively reduced, and the waste of manpower and material resources can be reduced.
2. According to the breaking device adopted by the invention, the plurality of positioning steel pipes are arranged on the bottom partition plate, and the lifting rope is arranged in each positioning steel pipe in a penetrating manner, so that the device is convenient to integrally lift and remove.
3. According to the breaking device adopted by the invention, the bottom partition plate is provided with the plurality of rectangular openings, and the rectangular openings can be used for pouring concrete and can also be used as a super-poured concrete overflow channel, so that the breaking device does not influence the pouring of the underground continuous wall.
4. According to the method, the bottom partition plate is arranged on the reinforcement cage of the underground diaphragm wall, the underground diaphragm wall and part of the super-poured concrete on the upper portion of the underground diaphragm wall can be isolated, when the super-poured concrete is removed, the super-poured concrete on the upper portion of the bottom partition plate can be integrally lifted out through the bottom partition plate only by separating the super-poured concrete on the upper portion of the bottom partition plate from the concrete structure on the lower portion, and the breaking efficiency of the super-poured concrete can be effectively improved.
5. According to the method, the elevation of the lower end face of the bottom partition plate is higher than the designed elevation of the top of the underground continuous wall, so that the super-poured concrete with a certain thickness exists between the top of the underground continuous wall and the bottom partition plate, and the top of the poured underground continuous wall is prevented from being damaged when the bottom partition plate is broken.
In conclusion, the invention has reasonable structural design and convenient construction, the external injection pipe and the internal injection pipe are arranged on the bottom division plate, the super-poured concrete can be broken before being completely hardened, the subsequent process construction can be carried out only by simply processing the top of the underground continuous wall in the later construction, the construction speed is greatly accelerated, the construction cost is reduced, and the defects of high breaking noise and much dust pollution in the traditional construction method are avoided.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic view of the breaking apparatus of the present invention.
Fig. 2 is an enlarged view of fig. 1 at a.
FIG. 3 is a diagram illustrating the operation of the breaking device according to the present invention.
FIG. 4 is a block flow diagram of the method of the present invention.
Description of reference numerals:
1-bottom divider plate; 1-a rectangular opening; 1-2-binding holes;
2-external jet pipe; 3-main injection pipe; 4-auxiliary injection pipe;
5, a water injection pipe; 6, positioning the steel pipe; 7, positioning a pipe ring;
8, lifting the lifting ring; 9-lifting rope; 10-longitudinal ribs.
Detailed Description
As shown in fig. 1 and 2, the present invention includes a rectangular bottom partition plate 1, a plurality of rectangular openings 1-1 are arranged on the bottom partition plate 1 at equal intervals along the length direction thereof, an external injection pipe 2 and an internal injection pipe are sequentially arranged on the bottom partition plate 1 from inside to outside, the internal injection pipe includes a main injection pipe 3, the external injection pipe 2 and the main injection pipe 3 are both annular injection pipes, the inner ring of the main injection pipe 3 is connected with a plurality of auxiliary injection pipes 4 communicated with each other, one auxiliary injection pipe 4 is uniformly arranged between two adjacent rectangular openings 1-1, a plurality of injection holes are respectively arranged on the pipe walls at two sides of the external injection pipe 2, the main injection pipe 3 and the auxiliary injection pipe 4, two water injection pipes 5 are symmetrically arranged on the external injection pipe 2 and the internal injection pipe, a plurality of positioning steel pipes 6 are further arranged on the bottom partition plate 1, each positioning steel pipe 6 is internally provided with a lifting rope 9 in a penetrating way.
During the in-service use, through setting up bottom division board 1, can keep apart underground continuous wall and the partial super concrete of irritating on its upper portion, when carrying out dismantling of super concrete, only need with 1 upper portion super concrete of pouring of bottom division board and lower part concrete structure split, just can put forward the whole of super concrete of pouring on its upper portion through bottom division board 1, can effectively improve the efficiency of breaing up of super concrete of pouring.
In the embodiment, the bottom partition plate 1 is arranged at a position 5cm above the designed elevation of the top of the underground continuous wall, and the underground continuous wall can be prevented from being damaged when the super-poured concrete on the upper part of the bottom partition plate 1 is broken through by reserving a 5cm super-pouring gap between the top of the underground continuous wall and the bottom partition plate 1; the bottom division plate 1 is provided with a plurality of rectangular openings 1-1 which are used as passages for pouring concrete and super-pouring concrete.
During the in-service use, through set up outside injection pipe 2 and inside injection pipe on bottom division board 1, before super-filled concrete sets finally, can demolish the super-filled concrete more than 1 of bottom division board in advance through the water under high pressure, can effectively improve the efficiency of construction, shorten the engineering time, can also effectively reduce constructor's intensity of labour simultaneously, reduce the waste of manpower and materials.
In the embodiment, the outer injection pipe 2 is arranged around the outer ring of the bottom partition plate 1, and the inner injection pipe is arranged around the rectangular opening on the bottom partition plate 1, that is, the main injection pipe 3 and the auxiliary injection pipe 4 which form the inner injection pipe are connected together to form a single-row rectangular grid-shaped injection pipe, and each grid of the inner injection pipe is provided with a rectangular opening 1-1.
In this embodiment, the distance between two adjacent injection holes on the two side pipe walls of the external injection pipe 2, the main injection pipe 3 and the auxiliary injection pipe 4 is not greater than 10cm, so that the super-filled concrete can be integrally divided and broken.
During actual use, a plurality of positioning steel pipes 6 are arranged on the bottom partition plate 1, and a lifting rope is arranged in each positioning steel pipe in a penetrating mode, so that the device can be conveniently and integrally lifted and dismantled.
In this embodiment, the number of the positioning steel pipes 6 is preferably three, the three positioning steel pipes 6 are arranged at equal intervals along the length direction of the bottom partition plate 1, and the middle positioning steel pipe 6 is located in the middle of the bottom partition plate 1.
In this embodiment, the two ends of the lifting rope 9 should be able to extend to above the ground along the groove wall of the groove section to be constructed, the length of the lifting rope extending to above the ground is not less than 1m, and the lifting rope 9 is a steel wire rope and the two ends of the lifting rope are both provided with lifting rings.
In this embodiment, the external injection pipe 2, the main injection pipe 3 and the auxiliary injection pipe 4 are all arranged in parallel with the bottom separation plate 1, the main injection pipe 3 and the auxiliary injection pipe 4 are fixedly connected, and the external injection pipe 2 and the main injection pipe 3 are both fixedly installed on the bottom separation plate 1 through the positioning pipe ring 7.
In actual use, the outer injection pipe 2, the main injection pipe 3 and the auxiliary injection pipe 4 have the same pipe diameter and are all galvanized steel pipes with holes, and the bottoms of the outer injection pipe 2, the main injection pipe 3 and the auxiliary injection pipe 4 are all tightly attached to the upper end face of the bottom partition plate 1.
In this embodiment, the width directions of the external injection pipe 2 and the main injection pipe 3 are both fixed by one positioning pipe ring 7, a plurality of positioning pipe rings 7 are arranged along the length directions of the external injection pipe 2 and the main injection pipe 3, the distance between two adjacent positioning pipe rings 7 is not more than 50cm, and the external injection pipe 2 and the main injection pipe 3 are both tightly connected with the bottom division plate 1.
In this embodiment, the bottom division plate 1 is a rectangular steel plate matched with the underground continuous wall to be constructed, and the positioning pipe ring 7 is fixedly installed on the bottom division plate 1.
During the in-service use, the width of bottom division board 1 slightly is less than the design width of underground continuous wall steel reinforcement cage, and location pipe ring 7 can be installed on bottom division board 1 through the bolt, a plurality of bolt holes have been seted up on bottom division board 1, and location pipe ring 7 also can the lug weld on bottom division board 1.
In this embodiment, the external injection pipe 2 and the main injection pipe 3 are both rectangular annular injection pipes, the auxiliary injection pipe 4 is arranged along the width direction of the bottom partition plate 1, and both ends of the auxiliary injection pipe are connected to the inner ring pipe wall of the main injection pipe 3.
In actual use, the auxiliary injection pipe 4 is fixedly connected between the two long sides of the main injection pipe 3, and both ends of the auxiliary injection pipe are communicated with the main injection pipe 3.
In this embodiment, the rectangular openings 1-1 are arranged in a rectangular frame formed by the auxiliary injection pipe 4 and the main injection pipe 3.
In actual use, the rectangular opening 1-1 is arranged in a rectangular frame formed by the auxiliary injection pipe 4 and the main injection pipe 3, so that high-pressure water injection holes are arranged on the peripheral side of the rectangular opening 1-1, and the super-filled concrete at the rectangular opening 1-1 can be quickly broken.
In this embodiment, the positioning steel tube 6 is parallel to the bottom partition plate 1, and both ends of the positioning steel tube are fixedly connected with the bottom partition plate through lifting rings 8.
During actual use, the positioning steel pipe 6 and the auxiliary injection pipe 4 are parallel to each other, the length of the positioning steel pipe 6 is slightly larger than the width of the underground continuous wall, two ends of the positioning steel pipe extend out of the outer side of the underground continuous wall, the positioning steel pipe 6 is arranged on the upper portions of the outer injection pipe 2 and the inner injection pipe, and the lifting hanging ring 8 is arranged between the outer injection pipe 2 and the main injection pipe 3.
In this embodiment, the lifting and hanging ring 8 is preferably a plain round steel bar.
In this embodiment, the water injection pipes 5 are perpendicular to the bottom partition board 1, the two water injection pipes 5 on the external injection pipe 2 are respectively arranged in the middle of two sides of the external injection pipe 2 and are communicated with the external injection pipe 2, and the two water injection pipes 5 on the internal injection pipe are respectively connected to the two auxiliary injection pipes 4 and are communicated with the main injection pipe 3 through the auxiliary injection pipes 4.
During the in-service use, two water injection pipes 5 on the outside injection pipe 2 are laid respectively in the middle of two long edges of the outside injection pipe 2, and two water injection pipes 5 on the inside injection pipe are laid symmetrically along the length direction of the bottom partition plate 1.
In this embodiment, the water injection pipe 5 is a galvanized steel pipe and its section exceeding the super-poured concrete elevation is not less than 50 cm.
In this embodiment, a plurality of binding holes 1-2 are formed on both sides of the bottom partition plate 1.
As shown in figure 3, in actual use, a plurality of binding holes 1-2 are formed in both sides of the bottom partition plate 1, which are long, so that the bottom partition plate 1 and longitudinal bars 10 of the reinforcement cage of the underground continuous wall are bound and fixed into a whole through steel wires.
The method for breaking the super-poured concrete of the underground continuous wall in advance as shown in figure 4 comprises the following steps:
step one, installation of a breaking device: the bottom partition plate 1 of the breaking device is bound and fixed between longitudinal ribs 10 on two sides of a reinforcement cage of the underground continuous wall by adopting steel wires, the elevation of the lower end surface of the bottom partition plate 1 is higher than the designed elevation of the top of the underground continuous wall, and a plurality of binding holes 1-2 for fixing the steel wires are formed in two sides of the bottom partition plate 1;
in practical use, when the breaking device is installed, the binding holes 1-2 on two sides of the bottom partition plate 1 are utilized to bind and fix the bottom partition plate 1 on the longitudinal ribs 10 5cm above the designed elevation of the top of the underground continuous wall by adopting steel wires.
By making the elevation of the lower end face of the bottom partition plate 1 higher than the designed elevation of the top of the underground diaphragm wall, super-poured concrete with a certain thickness can be present between the top of the underground diaphragm wall and the bottom partition plate 1, and the top of the poured underground diaphragm wall is prevented from being damaged when the bottom partition plate 1 is broken.
Step two, isolation and protection of the longitudinal bars of the reinforcement cage: PVC sleeves are sleeved on the longitudinal ribs 10 of the underground continuous wall reinforcement cage, the PVC sleeves are arranged above the bottom partition plate 1, and gaps are formed between the lower ends of the PVC sleeves and the upper end face of the bottom partition plate 1;
when the PVC sleeve is actually used, a PVC sleeve is sleeved on each longitudinal rib 10 reserved above the ceiling height of the underground continuous wall, a PVC plug is installed at the top of the PVC sleeve, and the PVC sleeve is fixedly sealed by using an adhesive tape; polyurethane with proper amount is filled in the seam between the lower part of the PVC sleeve and the longitudinal bar 10, the adhesive tape is wound outside, waterproof cloth is arranged at the joint of the outermost adhesive tape, and the PVC sleeve is bound by iron wires.
It should be noted that, by sleeving the PVC sleeve on the longitudinal rib 10 and plugging both ends of the PVC sleeve, in the process of pouring the underground continuous wall, concrete can be prevented from entering the PVC sleeve, so that the PVC sleeve and the longitudinal rib 10 are poured into a whole, and the demolition difficulty of the demolition device cannot be increased.
Particularly, a certain gap is formed between the lower end of the PVC sleeve and the upper end face of the bottom partition plate 1, the lower end of the PVC sleeve can be higher than the spray hole to be distributed, and the whole PVC sleeve is conveniently separated from the super-poured concrete at the lower part of the bottom partition plate 1.
Step three, placing a reinforcement cage: hoisting the underground continuous wall reinforcement cage provided with the breaking device into the groove section to be constructed by adopting a hoisting tool, wherein one side of the underground continuous wall reinforcement cage provided with the breaking device is arranged upwards, and two ends of a hoisting rope 9 are respectively placed at the tops of two sides of the groove section to be constructed;
when the underground continuous wall is used in practice, two ends of the lifting rope 9 are respectively placed at the tops of two sides of the groove section to be constructed, and after the underground continuous wall is poured, the whole breaking device can be conveniently lifted out of the groove section to be constructed in the later period;
step four, pouring concrete: pouring concrete into the groove section to be constructed, in which the reinforcement cage of the underground continuous wall is placed, to form the underground continuous wall, wherein 0.5-1 m of super-poured concrete is arranged on the upper part of the underground continuous wall;
step five, breaking the super-poured concrete by using high-pressure water: after the super-poured concrete poured in the fourth step reaches initial setting, injecting high-pressure water into the external injection pipe 2 and the internal injection pipe through the four water injection pipes 5, and breaking the surrounding super-poured concrete in the horizontal direction through injection holes until the super-poured concrete above the bottom partition plate 1 is separated from the underground continuous wall at the lower part, and stopping introducing the high-pressure water into the water injection pipes 5;
in practical use, the super-poured concrete poured in the step four can be broken off integrally by high-pressure water because the strength of the concrete is not high before the poured super-poured concrete is not finally set within a certain time after the super-poured concrete reaches initial setting.
In this embodiment, all adopt plastic film to wrap up on the lower terminal surface of bottom division board 1, the lateral wall of bottom division board 1 and the inner wall of rectangle opening 1-1 on the bottom division board 1, utilize the sticky tape to fix simultaneously, can effectively reduce the bonding of bottom division board 1 and concrete, the later stage of being convenient for is demolishd fast bottom division board.
Step six, dismantling the breaking device: after the poured concrete of the underground continuous wall reaches final set, lifting two ends of a lifting rope 9 by using a lifting appliance to integrally remove the breaking device, the super-poured concrete above the bottom partition plate 1 and the PVC sleeve from the longitudinal ribs 10 of the reinforcement cage of the underground continuous wall;
when the device is actually used, after the super-poured concrete at the upper part of the bottom separation plate 1 is separated from the super-poured concrete at the lower part of the bottom separation plate 1, the lifting rings at two ends of the lifting rope 9 are lifted by the lifting appliance, and then the bottom separation plate 1 can be lifted out of the outer side of the groove section to be constructed; the super-filled concrete and the PVC casing pipe on the upper part of the bottom partition board 1 are hoisted out together with the bottom partition board 1 under the action of the bottom partition board.
It should be noted that the steel wires for binding and fixing the bottom separation plate 1 and the longitudinal ribs 10 are thin, the quantity of the binding steel wires is enough to enable the fixing part of the bottom separation plate 1 to fall down, when the bottom separation plate is detached, a crane is adopted for hoisting, the hoisting force of the crane is large, the bottom separation plate 1 can be directly separated from the longitudinal ribs 10, the steel wires do not need to be detached, and the construction efficiency can be effectively improved.
Seventhly, cleaning the breaking device: cleaning the lifted super-poured concrete on the breaking device, and washing the breaking device clean;
during the in-service use, clear up remaining concrete on PVC sleeve pipe and the abolishing device, be convenient for recycle next time.
Chiseling the super-poured concrete at the top of the underground continuous wall: and after the whole construction of the underground continuous wall is finished and the earthwork is excavated, chiseling the super-poured concrete above the designed elevation of the underground continuous wall.
During the in-service use, after breaking the device and wholly demolising, constructor only need carry out the manual work to the super concrete pouring about 5cm on underground continuous wall upper portion and break, can effectively reduce constructor's intensity of labour, improve the efficiency of construction.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a device for breaking out super-grouted concrete of underground continuous wall in advance which characterized in that: the bottom separation plate comprises a rectangular bottom separation plate (1), a plurality of rectangular openings (1-1) are arranged on the bottom separation plate (1) at equal intervals along the length direction of the bottom separation plate, an external injection pipe (2) and an internal injection pipe are sequentially arranged on the bottom separation plate (1) from inside to outside, the internal injection pipe comprises a main injection pipe (3), the external injection pipe (2) and the main injection pipe (3) are both annular injection pipes, the inner ring of the main injection pipe (3) is connected with a plurality of auxiliary injection pipes (4) which are communicated with the main injection pipe, one auxiliary injection pipe (4) is uniformly distributed between every two adjacent rectangular openings (1-1), a plurality of injection holes are respectively formed in the pipe walls of two sides of the external injection pipe (2), the main injection pipe (3) and the auxiliary injection pipes (4), two water injection pipes (5) are symmetrically arranged on the external injection pipe (2) and the internal injection pipe, still be provided with a plurality of location steel pipe (6) on bottom division board (1), all wear to be equipped with a lifting rope (9) in every location steel pipe (6).
2. The breaking device for breaking the super-filled concrete of the underground continuous wall in advance according to claim 1, which is characterized in that: the outer injection pipe (2), the main injection pipe (3) and the auxiliary injection pipe (4) are arranged in parallel with the bottom separation plate (1), the main injection pipe (3) and the auxiliary injection pipe (4) are fixedly connected, and the outer injection pipe (2) and the main injection pipe (3) are fixedly installed on the bottom separation plate (1) through a positioning pipe ring (7).
3. The breaking device for breaking the super-filled concrete of the underground continuous wall in advance according to claim 1, which is characterized in that: the bottom division plate (1) is a rectangular steel plate matched with the underground continuous wall to be constructed, and the positioning pipe ring (7) is fixedly installed on the bottom division plate (1).
4. The breaking device for breaking the super-filled concrete of the underground continuous wall in advance according to claim 1, which is characterized in that: the outer injection pipe (2) and the main injection pipe (3) are rectangular annular injection pipes, the auxiliary injection pipe (4) is arranged along the width direction of the bottom separation plate (1), and two ends of the auxiliary injection pipe are connected to the inner ring pipe wall of the main injection pipe (3).
5. The breaking device for breaking the super-filled concrete of the underground continuous wall in advance according to claim 4, which is characterized in that: the rectangular opening (1-1) is arranged in a rectangular frame formed by the auxiliary injection pipe (4) and the main injection pipe (3).
6. The breaking device for breaking the super-filled concrete of the underground continuous wall in advance according to claim 1, which is characterized in that: the positioning steel pipe (6) and the bottom partition plate (1) are parallel to each other, and both ends of the positioning steel pipe are fixedly connected with the bottom partition plate through lifting rings (8).
7. The breaking device for breaking the super-filled concrete of the underground continuous wall in advance according to claim 1, which is characterized in that: water injection pipe (5) and bottom division board (1) mutually perpendicular, two water injection pipe (5) on outside injection pipe (2) are laid respectively in the both sides middle part of outside injection pipe (2) and its and outside injection pipe (2) communicate each other, two water injection pipe (5) on the inside injection pipe are connected respectively on two vice injection pipe (4) and it communicates each other through vice injection pipe (4) and main injection pipe (3).
8. The breaking device for breaking the super-filled concrete of the underground continuous wall in advance according to claim 1, which is characterized in that: and a plurality of binding holes (1-2) are formed in both sides of the bottom partition plate (1).
9. A method for the advanced demolition of the precast concrete of the underground continuous wall by using the demolition apparatus as set forth in claim 1, which comprises the steps of:
step one, installation of a breaking device: the bottom division plate (1) of the breaking device is bound and fixed between longitudinal ribs (10) on two sides of a reinforcement cage of the underground diaphragm wall by adopting steel wires, the elevation of the lower end surface of the bottom division plate (1) is higher than the designed elevation of the top of the underground diaphragm wall, and a plurality of binding holes (1-2) for fixing the steel wires are formed in two sides of the bottom division plate (1);
step two, isolation and protection of the longitudinal bars of the reinforcement cage: PVC sleeves are sleeved on a plurality of longitudinal ribs (10) of the underground continuous wall reinforcement cage, the PVC sleeves are arranged above the bottom partition plate (1), and gaps are formed between the lower ends of the PVC sleeves and the upper end face of the bottom partition plate (1);
step three, placing a reinforcement cage: hoisting the underground continuous wall reinforcement cage provided with the breaking device into the groove section to be constructed by adopting a hoisting tool, wherein one side of the underground continuous wall reinforcement cage provided with the breaking device is arranged upwards, and two ends of a hoisting rope (9) are respectively placed at the tops of two sides of the groove section to be constructed;
step four, pouring concrete: pouring concrete into the groove section to be constructed, in which the reinforcement cage of the underground continuous wall is placed, to form the underground continuous wall, wherein 0.5-1 m of super-poured concrete is arranged on the upper part of the underground continuous wall;
step five, breaking the super-poured concrete by using high-pressure water: after the super-poured concrete poured in the fourth step reaches initial setting, injecting high-pressure water into the external injection pipe (2) and the internal injection pipe through the four water injection pipes (5), and breaking the surrounding super-poured concrete in the horizontal direction through injection holes until the super-poured concrete above the bottom partition plate (1) is separated from the underground continuous wall at the lower part, and stopping introducing the high-pressure water into the water injection pipes (5);
step six, dismantling the breaking device: after the poured concrete of the underground continuous wall reaches final setting, lifting two ends of a lifting rope (9) by a lifting appliance to integrally remove the breaking device, the super-poured concrete above the bottom partition plate (1) and a PVC sleeve from a longitudinal rib (10) of the reinforcement cage of the underground continuous wall;
seventhly, cleaning the breaking device: cleaning the lifted super-poured concrete on the breaking device, and washing the breaking device clean;
chiseling the super-poured concrete at the top of the underground continuous wall: and after the whole construction of the underground continuous wall is finished and the earthwork is excavated, chiseling the super-poured concrete above the designed elevation of the underground continuous wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077080.XA CN110700259B (en) | 2019-11-06 | Device and method for advanced breaking of underground diaphragm wall superfilling concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911077080.XA CN110700259B (en) | 2019-11-06 | Device and method for advanced breaking of underground diaphragm wall superfilling concrete |
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| Publication Number | Publication Date |
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| CN110700259A true CN110700259A (en) | 2020-01-17 |
| CN110700259B CN110700259B (en) | 2024-05-31 |
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