CN216640671U - Pond wall formwork structure of reverse construction method of cyclone pond - Google Patents
Pond wall formwork structure of reverse construction method of cyclone pond Download PDFInfo
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- CN216640671U CN216640671U CN202122338145.0U CN202122338145U CN216640671U CN 216640671 U CN216640671 U CN 216640671U CN 202122338145 U CN202122338145 U CN 202122338145U CN 216640671 U CN216640671 U CN 216640671U
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Abstract
The utility model discloses a pond wall formwork structure of a reverse construction method of a cyclone pond, which comprises an inner formwork, an outer formwork and a bottom formwork, wherein the outer formwork is fixed with the outer wall of the cyclone pond, the inner formwork is fixed with the outer formwork through a counter-pulling screw rod, and the bottom formwork is arranged at the bottoms of the inner formwork and the outer formwork so as to form a pouring cavity for pouring concrete; the bottom form bottom is provided with the support frame, the support frame is fixed on the bottom of the pool of one section not excavated next, the support frame is used for supporting the bottom form, be provided with the stagnant water boss that is used for pouring the stagnant water recess on the bottom form. And carrying out downward excavation by a reverse construction method in a segmented manner, adopting soil nailing wall support in time after the excavation is finished, and supporting a formwork and pouring a pool wall structure through a formwork structure after the support is finished.
Description
Technical Field
The utility model relates to the field of construction of a cyclone pool, in particular to a pool wall formwork structure of a reverse construction method of the cyclone pool.
Background
In the hot rolled steel production process, a cyclone tank is an essential underground structure, and the water flowing into a slag flushing ditch and impurities generated in the hot rolling process are separated and precipitated by utilizing impact cyclone in the cyclone tank, and the water is filtered for recycling after the precipitates are grabbed.
At present, the construction of the cyclone pool by a reverse construction method belongs to a common construction scheme, but when the construction of the pool wall is carried out after the reverse construction method is adopted, the problems of narrow operation space, formwork support of an external mold and a bottom mold of the pool wall and the like exist. Therefore, a pond wall formwork structure which is convenient to construct and short in construction period and is made by the reverse construction method of the rotational flow pond is urgently needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a pond wall formwork structure of a reverse construction method of a cyclone pond, which is characterized in that a reverse construction method is carried out, the pond wall formwork structure is excavated downwards in sections, soil nailing wall supporting is adopted in time after excavation is finished, and formwork supporting and pond wall pouring are carried out through the formwork structure after supporting is finished.
The embodiment of the utility model is realized by the following steps:
a pond wall formwork structure of a reverse construction method of a rotational flow pond comprises an inner formwork, an outer formwork and a bottom formwork, wherein the outer formwork is fixed with the outer wall of the rotational flow pond, the inner formwork is fixed with the outer formwork through a split screw, and the bottom formwork is arranged at the bottoms of the inner formwork and the outer formwork so as to form a pouring cavity for pouring concrete; the bottom formwork bottom is provided with the support frame, the support frame is fixed on the bottom of the pool that does not excavate next section, the support frame is used for supporting the bottom formwork, be provided with the stagnant water boss that is used for pouring the stagnant water recess on the bottom formwork. And carrying out downward excavation by a reverse construction method in a segmented manner, adopting soil nailing wall support in time after the excavation is finished, and supporting a formwork and pouring a pool wall structure through a formwork structure after the support is finished.
Preferably, the bottom template is of a circular arc structure, and the water stop boss is arranged along the arc direction of the bottom template.
Preferably, the device also comprises a counter-pulling screw and an L-shaped steel bar embedded part, wherein one end of the L-shaped steel bar embedded part is fixed on the outer wall of the cyclone pool, and the other end of the L-shaped steel bar embedded part is welded and fixed with the counter-pulling screw; one end of the opposite-pulling screw rod, which is far away from the L-shaped steel bar embedded part, penetrates through the outer template and the inner template successively.
Preferably, a water stop sheet is arranged at the middle point of the split screw rod and used for sealing a gap between the split screw rod and poured concrete.
Preferably, the number of the counter-pulling screw rods is multiple, and the counter-pulling screw rods are uniformly distributed on the pouring cavity.
Preferably, one side of the inner formwork, which is far away from the pouring cavity, is provided with a reinforcing device, and the reinforcing device is used for secondarily fixing the plurality of counter-pulling screws.
A construction method of a cyclone pool adopts the pool wall formwork structure of the reverse construction method of the cyclone pool to carry out construction, and comprises the following steps:
s1: top excavation is carried out on the top position of the cyclone pool, and concrete is sprayed to the top of the cyclone pool through a net to protect the slope;
s2: arranging a measure pile, placing the measure pile at the position of the wall of the rotational flow pool, and arranging a crown beam at the top of the measure pile, wherein the crown beam is used for bearing the weight of the reverse construction method;
s3: carrying out first-section excavation on the cyclone pool, fixing the formwork supporting structure to a first-section position to be poured, and pouring;
s4: after the first section of pouring is finished, the step S3 is repeated to carry out the second section of excavation, supporting and pouring processes;
s5: and (4) excavating, supporting and pouring processes of the third section and the Nth section are sequentially carried out until the reverse construction method is carried out to the bottom, and the cyclone pool is completed.
Preferably, step S4 further includes the following steps:
s41, erecting a batten support frame at the bottom, wherein the height is 200-300 mm;
s42: laying a bottom template on the batten support frame, and fixing the bottom template and the support frame;
s43: a water stop boss is arranged on the bottom template;
s44: and fixing the outer template on the outer side wall of the cyclone tank, and fixing the inner template through a split screw rod.
Preferably, in step S42, a fixing through hole is formed in the bottom form, the fixing through hole is used for passing through the longitudinal steel bar, a waterproof portion is formed in the fixing through hole, a part of the steel bar passing through the bottom form is subjected to waterproof treatment, and the steel bar joint is wrapped with the protective cap.
Preferably, an inclined feeding hole is formed in the top of the inner formwork, and the concrete pouring surface is higher than the horizontal construction joint of the bottom surface of each section of the pool wall.
Due to the adoption of the technical scheme, the utility model has the beneficial effects that: the pond wall formwork structure of the reverse construction method of the rotational flow pond comprises an inner formwork, an outer formwork and a bottom formwork, wherein the outer formwork is fixed with the outer wall of the rotational flow pond, the inner formwork is fixed with the outer formwork through a split screw, and the bottom formwork is arranged at the bottoms of the inner formwork and the outer formwork so as to form a pouring cavity for pouring concrete; the bottom formwork bottom is provided with the support frame, the support frame is fixed on the bottom of the pool that does not excavate next section, the support frame is used for supporting the bottom formwork, be provided with the stagnant water boss that is used for pouring the stagnant water recess on the bottom formwork. And carrying out downward excavation by a reverse construction method in a segmented manner, adopting soil nailing wall support in time after the excavation is finished, and supporting a formwork and pouring a pool wall structure through a formwork structure after the support is finished.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a countermeasure pile arrangement of the present invention;
FIG. 3 is a schematic view of the formwork construction of the present invention;
FIG. 4 is a schematic view of a first construction state of the present invention;
FIG. 5 is a schematic view of a second construction state of the present invention;
FIG. 6 is a schematic view of the construction of the cyclone tank of the present invention.
Description of specific element symbols: 1-top beam, 2-measure pile, 3-inner cylinder wall, 4-outer cylinder wall, 5-L type steel bar embedded part, 6-bottom template, 7-support frame, 8-split screw rod, 9-inner template, 10-reinforcing device, 11-outer template, 61-water stop boss and 91-inclined feed port.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. The following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1: referring to fig. 1 to 6, the pond wall formwork structure of the reverse construction method of the spiral flow pond of the embodiment includes an inner formwork 9, an outer formwork 11 and a bottom formwork 6, the outer formwork 11 is fixed to the outer wall of the spiral flow pond, the inner formwork 9 is fixed to the outer formwork 11 through a counter-pulling screw 8, and the bottom formwork 6 is arranged at the bottoms of the inner formwork 9 and the outer formwork 11, so as to form a casting cavity for casting concrete; the bottom formwork 6 bottom is provided with support frame 7, support frame 7 is fixed on the bottom of the pool that does not excavate next section, support frame 7 is used for supporting bottom formwork 6, be provided with the stagnant water boss 61 that is used for pouring the stagnant water recess on the bottom formwork 6. And carrying out downward excavation by a reverse construction method in a segmented manner, adopting soil nailing wall support in time after the excavation is finished, and supporting a formwork and pouring a pool wall structure through a formwork structure after the support is finished.
Example 2: referring to fig. 1 to 6, the bottom form 6 of the present embodiment is an arc structure, and the water stop boss 61 is disposed along an arc direction of the bottom form 6. The device also comprises a counter-pulling screw 8 and an L-shaped reinforced embedded part 5, wherein one end of the L-shaped reinforced embedded part 5 is fixed on the outer wall of the cyclone pool, and the other end of the L-shaped reinforced embedded part 5 is welded and fixed with the counter-pulling screw 8; one end of the counter-pulling screw 8, which is far away from the L-shaped steel bar embedded part 5, penetrates through the outer template 11 and the inner template 9 in sequence. This embodiment the intermediate point position is provided with the waterstop piece on the split screw 8, the waterstop piece is used for the gap of sealed split screw 8 and the back concrete of pouring. The number of the counter-pulling screw rods 8 is multiple, and the counter-pulling screw rods are evenly distributed on the pouring cavity. One side of the inner formwork 9, which is far away from the pouring cavity, is provided with a reinforcing device 10, and the reinforcing device 10 is used for secondarily fixing the plurality of counter-pulling screws 8.
Example 3: referring to fig. 1 to 6, the present embodiment further provides a method for constructing a spiral flow pool, which is implemented by using the above-mentioned formwork structure of the pool wall by the reverse method of the spiral flow pool, and includes the following steps: s1: top excavation is carried out on the top position of the cyclone pool, and concrete is sprayed to the top of the cyclone pool through a net to protect the slope; s2: arranging a measure pile 2, placing the measure pile 2 at the position of the wall of the rotational flow pool, arranging a crown beam 1 at the top of the measure pile 2, and bearing the weight of the reverse construction method by using the crown beam 1; s3: carrying out first-section excavation on the cyclone pool, fixing the formwork supporting structure to a first-section position to be poured, and pouring; s4: after the first section of pouring is finished, the step S3 is repeated to carry out the second section of excavation, supporting and pouring processes; s5: and (4) excavating, supporting and pouring processes of the third section and the Nth section are sequentially carried out until the reverse construction method is carried out to the bottom, and the cyclone pool is completed.
Example 4: referring to fig. 1 to fig. 6, step S4 of the present embodiment further includes the following steps: s41, erecting a batten support frame 7 at the bottom, wherein the height is 200-300 mm; s42: a bottom template 6 is laid on the batten support frame 7, and the bottom template 6 is fixed with the support frame 7; s43: a water stop boss 61 is arranged on the bottom template 6; s44: the outer formwork 11 is fixed to the outer side wall of the cyclone tank, while the inner formwork 9 is fixed by the counter-pulling screw 8. In step S42 of this embodiment, the bottom form 6 is provided with a fixing through hole, the fixing through hole is used for passing through the longitudinal steel bar, the fixing through hole is provided with a waterproof portion, the steel bar portion passing through the bottom form 6 is subjected to waterproof treatment, and the steel bar joint is wrapped by the protective cap. The top of the inner formwork 9 is provided with an inclined feeding hole 91, and the concrete pouring surface is higher than the horizontal construction joint of the bottom surface of each section of the pool wall.
Example 5: referring to fig. 1 to 6, in the present embodiment, the radius of the outer cylinder of the spiral flow cell is about 7m, the thickness of the outer wall is about 1.2m, the overall depth is about 19.5m, the outer cylinder of the spiral flow cell is tapered from 16 points according to a cone section of 50 degrees ("the wall thickness of the cone" part is 1.2m, the height is about 3.9m), and the concrete thickness of the bottom plate of the spiral flow cell is about 1.3 m. The top of the cyclone pool is excavated to be about 4.5m to leave an operation space for the thin-wall section of the construction pool wall and the crown beam 1, and the reverse construction distance is reasonably reduced. The method is characterized in that the method comprises the steps of penetrating piles through the wall of the pool, arranging the crown beams 1 at the tops of the piles, conducting reverse construction by means of the measure piles 2 and the crown beams 1, enabling the crown beams 1 to be in a hidden beam form, enabling the width of each crown beam to be consistent with the thickness of the wall of the rotational flow pool, and connecting the measure piles 2 into a whole through the crown beams 1. Meanwhile, the crown beam 1 is used as a starting point of reverse construction of the pool wall, the pool wall is reversely constructed downwards from the crown beam 1, and the crown beam 1 is used as an important stress member for bearing the self weight of the pool wall in the reverse construction. The method is carried out by adopting a segmented 'starting-up-supporting-pouring' circulating operation mode. After the construction of the piles and the top beams 1 is completed, downward excavation is performed in a segmented mode by a reverse construction method (each segment is about 3m), soil nailing wall supporting is timely adopted after excavation is completed, and after supporting is completed, formwork supporting is performed by using the formwork supporting mode designed by the patent and a pool wall structure is poured. And sequentially circulating the working procedures of excavation, support and pouring until the bottom plate of the cyclone pool is sealed.
The method specifically comprises the following steps: 1) firstly, excavating about 4.5m at the top of the cyclone pool, reserving a construction operation space for the thin-wall section of the pool wall and the crown beam 1, and reasonably reducing the reverse construction distance; 2) constructing piles, namely enabling the piles to penetrate through the position of the pool wall, arranging a crown beam 1 at the top of the piles, carrying out reverse construction by means of the measure piles 2 and the crown beam 1, and supporting the rotational flow pool as a pile foundation after the construction is finished, so that the effect of one pile for two purposes is achieved; 3) the reverse construction of the cyclone pool is carried out by adopting a segmented 'complete start-support-pouring' circulating operation mode (about 3m in segments); 4) adopting a soil nailing wall for supporting after each section of excavation, and embedding embedded parts on the surface layer of the soil nailing wall; 5) hardening the bottom of the foundation pit, erecting a bottom batten support frame 7, installing a bottom die and arranging a water stopping groove; 6) and installing a split screw 8 with a water stop sheet, installing and fixing the inner side template and the feed inlet, and pouring concrete. The soil nailing wall support has the characteristics of convenience in construction, good side wall support effect and the like, and meanwhile, the soil nailing wall can reduce the outside formwork support process, save the use of formworks and save the construction period, belongs to flexible support and can fully play the role of resisting the side pressure of the pool wall structure by combining with the pool wall.
Example 6: please refer to fig. 1 to 6, 1), excavation of about 4.5m is firstly carried out at the top position of the cyclone pool, and slope protection is carried out by using net sprayed concrete, the slope excavation can reserve construction operation space for the thin-wall section of the pool wall and the top beam 1, and the reverse construction distance is reasonably reduced; meanwhile, piles (about 12 which are evenly distributed on the position of the pool wall at certain intervals) penetrate through the position of the pool wall, a crown beam 1 is arranged at the top of the pile, the width of the crown beam 1 in a hidden beam mode is consistent with the thickness of the pool wall of the rotational flow pool, the measure piles 2 are connected into a whole through the crown beam 1, the height of the whole crown beam 1 is about 1.3m, and the crown beam 1 is used as a starting point of reverse construction of the pool wall and also used as an important stress component for bearing the dead weight of the pool wall in the reverse construction; the reverse construction is carried out by means of the measure piles 2 and the crown beams 1, and the piles are used as pile foundations to support the rotational flow pool after the construction is finished, so that the effect of one pile for two purposes is achieved. 2) And the reverse operation of the cyclone pool is carried out by adopting a segmented 'excavation-supporting-pouring' circulating operation mode. After the construction of the piles and the crown beams 1 is completed, downward excavation is performed in sections (each section is about 3m), soil nailing wall supporting is timely adopted after excavation is completed, and after supporting is completed, formwork supporting is performed by using the formwork supporting mode designed by the patent and a pool wall structure is poured. And sequentially circulating the working procedures of excavation, support and pouring until the bottom plate of the cyclone pool is sealed. 3) Designing a cyclone tank subsection reverse-acting formwork system. The segmented reverse formwork system structure comprises an L-shaped steel bar embedded part 5, a counter-pulling screw 8 with a water stop sheet, a side mold, a bottom mold, a batten support frame 7, a reinforced steel pipe, a water stop groove and the like.
Wherein the reverse formwork structure of making of whirl pond still needs to pay attention to: 1) the bottom batten support frame 7 is stable and reliable to erect, the overall height is 200-300mm, the bottom die is guaranteed to be flat after the batten support is erected, and the overall stability of the segmented reverse-acting formwork support system can be effectively guaranteed. 2) The pool wall bottom die is laid by adopting a wood formwork, the installation and the reinforcement are carried out by relying on the batten support frame 7, the hole is formed in the bottom die according to the arrangement of longitudinal steel bars, the diameter of the hole is 4mm larger than that of the vertical steel bars, the longitudinal steel bars convenient to pass are located between the batten support frames 7, meanwhile, the water-proof treatment is carried out on the steel bar part passing through the bottom die, and the protective cap is wrapped on the steel bar joint. 3) The middle part of the bottom template 6 is reserved with a water stop groove with the size of 100 multiplied by 50mm, after the bottom template is dismantled, a water stop adhesive tape which expands when meeting water is embedded and fixed in the water stop groove by a steel nail, so that the two sections of pool walls can be effectively waterproof, and meanwhile, the method can effectively reduce the water seepage and water leakage of the pool walls caused by the annular cracks possibly appearing at the joint parts of new and old concrete due to the shrinkage of the concrete in the hard bonding process. 4) The inner side template tie adopts a counter-pulling screw 8 with a water stop sheet, the diameter phi 16 is formed, the middle part of the screw is welded with a 80 mm-80 mm square water stop sheet, and the thickness of the water stop sheet is 3 mm. 5) After the wood formwork on the inner side of the pool wall is placed, welding one end of the counter-pull screw 8 on the L-shaped steel bar embedded part 5 exposed out of the soil nailing wall, and welding and reinforcing in a full-length welding mode; the other end of the opposite-pulling screw rod 8 penetrates through the template, the back of the template is provided with a transverse reinforcing batten and a reinforcing steel pipe, and the transverse reinforcing batten and the reinforcing steel pipe are locked and reinforced firmly by adopting the mountain-shaped buckle. 6) The oblique mould of construction section top installation forms the feeding bevel connection, and the concrete placement face exceeds every section pool wall bottom surface level construction joint 100mm, and the bevel connection template adopts the segmentation to set up, and every section bevel connection length is 1m, and two adjacent feeding bevel connection intervals are 1m, and no feeding bevel connection part is directly pasted at last pool wall, makes it flush with the pool wall internal side surface.
The utility model has the advantages that:
1) and the top of the rotational flow tank is used for slope releasing and excavating. The slope excavation is the construction of the thin-wall section (the pile cannot penetrate) at the upper part of the rotational flow pool and the construction of the crown beam 1, a wide operation space is reserved, the reverse construction distance is reasonably reduced, a precondition is provided for the reverse construction, the construction quality is ensured, and the construction efficiency is improved;
2) the utility model adopts the piles and the crown beams 1 to construct the pool wall. The method is characterized in that a pile penetrates through the position of the pool wall, a circle of top beams 1 are constructed on the pile top, then the construction of the pool wall by the top beams 1 is carried out, the reverse construction process is different from the reverse construction process which needs to be carried out after underground enclosing structures (row piles, underground continuous walls and the like) are used for pre-supporting, the measure cost in the reverse construction is reduced, meanwhile, the pile continues to serve as a pile foundation to support a rotational flow pool after the construction is finished, and the effect of one pile for two purposes is achieved, so that the process is also suitable for the working condition that the bearing capacity of foundation soil is insufficient;
3) the reverse operation of the cyclone pool is carried out by adopting a segmented 'excavation-supporting-pouring' circulating operation mode. Downward excavation is performed by a reverse construction method in sections (each section is about 3m), soil nailing wall supporting is timely adopted after excavation is completed, and after supporting is completed, formwork supporting and pool wall structure pouring are performed by using the formwork supporting mode designed by the patent;
4) the soil nailing wall disclosed by the utility model is small in required field for construction, convenient and fast to construct, good in supporting effect on the side wall of the high-fill foundation pit, and meanwhile, the flexible soil nailing wall is combined with the rigid pool wall structure, so that the resistance effect of the pool wall structure can be effectively exerted, and a good common stress system is formed. Meanwhile, the soil nailing wall can be used as an outer template 11 of the pool wall when the concrete of the pool wall is poured, so that construction templates are saved, and the construction efficiency is improved;
5) the cyclone pool subsection reverse construction formwork erecting system is reasonable in structural design, the formwork erecting is convenient, the soil nailing wall is used as an outer formwork, the outside formwork erecting process is omitted, the use of the formwork is reduced, economy and high efficiency are achieved, meanwhile, the water stopping groove is formed in the construction joint, and the water stopping rubber strip is combined, so that the leakage of the construction joint can be prevented. The cyclone pool subsection reverse construction formwork system can effectively save the construction period, improve the construction efficiency, reduce the labor intensity and reduce the construction cost.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The pond wall formwork structure adopting the reverse construction method of the rotational flow pond is characterized by comprising an inner formwork (9), an outer formwork (11) and a bottom formwork (6), wherein the outer formwork (11) is fixed with the outer wall of the rotational flow pond, the inner formwork (9) is fixed with the outer formwork (11) through a split screw (8), and the bottom formwork (6) is arranged at the bottoms of the inner formwork (9) and the outer formwork (11) to form a pouring cavity for pouring concrete; the bottom formwork (6) bottom is provided with support frame (7), support frame (7) are fixed on the bottom of the pool that one section was not excavated next, support frame (7) are used for supporting bottom formwork (6), be provided with stagnant water boss (61) that are used for pouring the stagnant water recess on bottom formwork (6).
2. The pond wall formwork structure of the whirling pond reverse construction method according to claim 1, characterized in that the bottom formwork (6) is in a circular arc structure, and the water stop boss (61) is arranged along the arc direction of the bottom formwork (6).
3. The pond wall formwork structure for the reverse construction method of the cyclone pond according to claim 1, further comprising a counter-pull screw (8) and an L-shaped steel bar embedded part (5), wherein one end of the L-shaped steel bar embedded part (5) is fixed on the outer wall of the cyclone pond, and the other end of the L-shaped steel bar embedded part is welded and fixed with the counter-pull screw (8); one end of the opposite-pulling screw rod (8) far away from the L-shaped steel bar embedded part (5) penetrates through the outer template (11) and the inner template (9) successively.
4. The pond wall formwork structure of the reverse construction method of the rotational flow pond according to claim 3, wherein a water stop sheet is arranged at the middle position of the split screw (8) and used for sealing a gap between the split screw (8) and poured concrete.
5. The pond wall formwork structure of the whirling pond reverse construction method according to claim 3, characterized in that the number of the split screws (8) is multiple and is evenly distributed on the pouring cavity.
6. The pond wall formwork structure of the whirlpool basin reverse construction method according to claim 5, characterized in that a reinforcing device (10) is arranged on one side of the inner formwork (9) far away from the pouring cavity, and the reinforcing device (10) is used for secondarily fixing a plurality of counter-pulling screw rods (8).
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| CN202122338145.0U CN216640671U (en) | 2021-09-26 | 2021-09-26 | Pond wall formwork structure of reverse construction method of cyclone pond |
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