CN116837797A - Vertical joint type fishway construction method for bent partition plates of bent multi-layer plate - Google Patents

Abstract

The invention discloses a bent multi-layer plate partition board vertical joint type fishway construction method, which comprises bent construction and fishway construction, wherein S10, first-layer upright post reinforcing steel bar installation and first-layer post template installation are carried out; s20, erecting a first layer of frame beam supporting frames, installing a first layer of frame beam bottom die, and then installing first layer of frame beam reinforcing steel bars and installing first layer of frame beam side dies; s30, mounting a first layer of frame beam embedded parts and pouring first layer of columns and beams; s40, repeating the steps S10-S30 until the bent construction is completed; s50, carrying out bearing support erection of a first layer of fishway groove; s60, installing a bottom die of the first layer of fishway groove, installing reinforcing steel bars of the first layer of fishway groove and installing a side die of the first layer of fishway groove; s70, pouring first-layer fishway groove concrete; s80, repeating the steps S50-S70 until the fishway groove construction is completed; s90, manufacturing and installing the prefabricated partition board. The invention effectively solves the problems of complex structure and high construction difficulty and ensures the construction period.

Description

Vertical joint type fishway construction method for bent partition plates of bent multi-layer plate

Technical Field

The invention relates to the field of construction of water conservancy infrastructure, in particular to a bent multi-layer disc-folded partition board vertical joint type fishway construction method.

Background

The fishway is an artificial channel for fish to travel through a gate, a dam and other buildings or natural obstacles. The fishway is built by using natural topography, reduces the longitudinal slope of the fishway, adopts a bent structure, and the modes of prolonging the length of the fishway and reducing the longitudinal slope of the fishway are not common, and represent the Bachu river engineering.

The multi-layer plate folds of the reinforced concrete bent frame are utilized to form the concentrated fishway arrangement, but the structure is complex, the construction difficulty is high, the fishway is generally arranged in a plurality of rows on the bent frame due to the requirement of the fishway gradient, the end part of the bent frame turns back, the multi-layer plate folds are carried out according to the size of the total water head, the cross beams are also used as fishway supports, the bent frame is longitudinally arranged to form connecting beams, the height of the longitudinal and transverse beams is frequently changed, the single-layer column height has no fixed size, and the height of the fishway bearing support is greatly changed. Therefore, no integral construction technology for the bent multi-layer plate partition plate vertical joint type fishway of the bent multi-layer plate partition plate exists at present.

Disclosure of Invention

The invention aims to solve the technical problem of providing a bent multi-layer plate-folded partition plate vertical joint type fishway construction method capable of effectively reducing construction cost and guaranteeing construction period.

The technical scheme adopted for solving the technical problems is as follows: the bent multi-layer plate partition board vertical joint type fishway construction method comprises bent construction and fishway construction;

wherein, the bent construction comprises the following steps,

s10, mounting a first layer of upright post reinforcing steel bars and mounting a first layer of column templates;

s20, erecting a first layer of frame beam supporting frames, installing a first layer of frame beam bottom die, and then installing first layer of frame beam reinforcing steel bars and installing first layer of frame beam side dies;

s30, mounting a first layer of frame beam embedded parts and pouring first layer of columns and beams;

s40, repeating the steps S10-S30 until the bent construction is completed;

the fishway construction comprises the following steps of,

s50, carrying out bearing support erection of the first layer of fishway groove;

s60, installing a bottom die of the first layer of fishway groove, installing reinforcing steel bars of the first layer of fishway groove and installing a side die of the first layer of fishway groove;

s70, pouring first-layer fishway groove concrete;

s80, repeating the steps S50-S70 until the fishway groove construction is completed;

s90, manufacturing and installing the prefabricated partition board.

Further, the first layer of column rebar installation in step S10 includes,

s101, erecting a support scaffold, namely erecting steel pipes of the same beam support frame in the step S20, wherein the longitudinal and transverse distances between the steel pipes and the beam support frame are equal or multiplied, and paving springboards around an operation surface and hanging safety nets;

S102, binding according to the interval and the number of stirrups required by design, staggering the stirrups according to hooks and sleeving the stirrups on lower-layer foundation embedded bars, then standing up upright post bars, and binding inwards according to preset requirements on overlap joint length and binding buckles;

s103, arranging upright post positioning ribs, wherein main ribs of the vertical stressed rib columns are connected through straight threads, and the sizes of the connecting joints and the sleeves and the thickness of the reinforcing steel bar protection layers meet preset requirements;

the joints of the stirrups are staggered on the vertical steel bars, the stirrups are perpendicular to the main bars, the stirrups are bound with the joints of the main bars and the stirrups, and the top surface of the joint of the vertical exposed bar at the lower layer and the beam is fixed by a column hoop;

the positions of the reinforcing steel bar joints are avoided from the stirrup encrypting area and are arranged in the stress minimum area, the adjacent reinforcing steel bar joints are staggered for 35d and are not smaller than 50cm, cushion blocks are additionally arranged after the thickness of the protective layer reaches a threshold value, and the distance is 100cm;

and (3) making stirrups into spliced parts with difficult binding, and welding the stirrups into a closed hoop according to lap joints 10d after binding in place.

Further, performing a first tier column template installation in step S10 includes,

s111, connecting and fixing column templates by high-strength bolts, wherein a standard column section adopts a double-splicing shaping template, a joint of the standard column section and a unidirectional beam adopts a three-splicing shaping template, and a joint of the standard column section and a bidirectional beam adopts a four-splicing shaping template;

S112, checking and accepting the column mould before sealing the mould, reserving the position of a beam outlet or pouring concrete below the beam bottom, and fixing the periphery of the mould plate with a bent frame by using a steel pipe.

Further, the step S20 of erecting the first layer of frame beam supporting frames and installing the first layer of frame beam bottom molds comprises the steps of,

s201, erecting a beam support frame by adopting steel pipes, arranging a plurality of rows of upright posts at the beam bottom transversely according to preset intervals, arranging a bottom support and a wide wood backing plate at the bottom according to preset requirements, arranging double-spliced steel pipes at the upper part of each row of upright post top supports longitudinally as a beam bottom die supporting main beam, arranging square wood at intervals transversely as beam bottom trabeculae, and arching according to 1/1000-3/1000 of the full span length when the beam span is more than 4 m;

s202, adopting a cladding wood plywood for a beam bottom template, erecting a support frame to finish bottom die paving construction, paving a double-spliced steel pipe support main beam and a square wood trabecula in order according to the preset interval requirement before paving the template, paving a bottom die immediately, firstly abutting and nailing with a column head or an adjacent structure, and using a wood bar as a vertical stop and a vertical stop support during paving.

Further, the first layer of frame beam rebar installation in step S20 includes,

s211, binding the steel bars according to a preset sequence, wherein the steel bars comprise longitudinal steel bars of the penetrating beam, stirrups of the mounting beam, binding steel bars and pad protection layers;

The binding needs to meet the following requirements that stirrups are perpendicular to the main bars, stirrup hooks are arranged in a staggered mode, and crossing points of the corner of the stirrups and the longitudinal bars are firmly bound;

the tension steel bar joint of the beam is prevented from being arranged at the maximum bending moment of the beam, the joint positions are staggered from each other within the range of the section of the stress steel bar 30d and are not less than 500mm, the section area of the stress steel bar with the binding joint accounts for not more than 25 percent of the total section area of the stress steel bar in the tension zone, and the compression zone is not more than 50 percent;

performing a first tier frame beam side die installation includes,

s211, adopting a cladding wood plywood for the side mould, adopting square wood for the longitudinal enclosing purlin of the mould and adopting double steel pipes for the transverse enclosing purlin;

s212, keeping the surface of the template flat and uniformly brushing a release agent, tightly assembling joints, measuring, positioning and scribing at the height position of the surface of the template;

s213, spreading and arranging beam templates, backing from two ends of the beam to the middle, arranging the embedded wood in the beam, and arranging a cleaning opening of the beam at the beam end;

s214, fixing the template by adopting an external fixing and internal opposite pulling mode, wherein the external fixing adopts a mode that a vertical steel pipe of the template is enclosed and connected with a cross rod at the bottom of the bottom die, and a fastener is fixed; the opposite pulling adopts opposite pulling rods, the upper and lower beams are respectively and correspondingly provided with one channel, the longitudinal distance is a preset distance, and the pulling rods penetrate through the PVC pipe; and, should wrap the die block with the side form during the formwork, beam mold and column mold junction, the unloading size is shortened slightly.

Further, the first layer frame beam embedment in step S30 includes,

s301, fully paving a steel plate on the top surface of a bent beam, welding anchor bars, lifting to the top surface of the beam, measuring and controlling the gradient and the elevation of the top surface to be in a preset range, and spot-welding on a main beam bar of the beam; the top of the steel plate is provided with concrete warehouse entry ports, the distance is 1.0-1.5 m, and the warehouse entry ports are welded and restored after the concrete pouring is completed;

the concrete casting of the first layer of columns and beams comprises,

s301, pouring the bent frame by adopting pumping concrete, transporting the concrete tank truck, pumping the concrete into a bin by using an automobile pump, pouring column concrete firstly, and then pouring the poured column end to the other end for construction;

s302, paving a layer of cement mortar with the same label and thickness of 2-3 cm before pouring the column;

s303, intensively mixing concrete in a concrete mixing station, wherein the slump of the concrete is controlled to be 18+/-2 cm, and the initial setting time of the concrete is controlled to be 8 hours;

s304, placing concrete into a warehouse: mounting a string cylinder to the pouring surface by 80-100 cm for the row frame column, and directly warehousing the beam by using an automobile pump hose; the layering thickness is controlled to be 30-40 cm; the flexible shaft inserted vibrator is adopted for vibrating, the vibrating depth of the vibrator is generally not more than 2/3-3/4 times of the length of the rod, the vibrator is required to be quickly inserted and pulled out during vibrating, the vibrator is continuously moved up and down, and the tamping is uniform;

The vibrating rod is inserted into the lower concrete layer for 10cm during layered pouring, the moving distance is not more than 1.5 times of the action radius of the vibrator, at least 5cm distance is kept between the vibrating rod and the side mould, and the vibrating duration time is 20-30 s for each vibrating part, so that the concrete is not sunk any more, no air bubble appears, and the surface presents floating paste;

pouring is continuously carried out, and the upper layer concrete is poured and tamped before the initial setting of the lower layer concrete;

s305, removing bleeding in a pouring middle bin, avoiding perforating a hole on a template to remove water and bring mortar, removing mortar adhered to the surfaces of the template and the steel bars at any time, and controlling the surface evenness of the concrete in a preset range; the appearance quality is ensured;

s306, carrying out surface collecting on the exposed surface of the beam, scraping the exposed surface by using a scraping rule, then using a wooden trowel to put out slurry, trowelling and collecting light by using an iron trowel, and ensuring that the surface flatness of the concrete meets the requirement;

s307, curing, namely wrapping the exposed surface by a plastic film after concrete pouring at normal temperature is completed, and covering the exposed surface by a felt sheet, wherein the cover is prevented from directly contacting the surface of the concrete until the concrete is initially set;

the sprinkling is carried out by arranging a shower pipe for curing, so that enough condensed water is ensured in the film, and the curing time is not less than 28 days;

S308, removing the mould, setting reliable footholds for operation at the height of more than 2 meters when the mould is removed, and having corresponding safety protection structures;

the form removal sequence should follow the principle of supporting before removing and supporting after removing, and the beam side forms and the column forms can be removed after the concrete strength can ensure that the surfaces and edges of the components are not damaged by removing the form, and the beam needs to bear the layer beam construction load and can be removed after the strength reaches the design strength;

and after the die is disassembled, the outer surface of the frame post and the beam is covered and protected by a film, and sprinkling maintenance or heat preservation treatment is carried out according to seasons.

Further, the step S50 of erecting the first layer of fishway bearing support comprises the following steps,

s501, a fishway groove is folded along the space between the rows of frame columns, rest rooms are adopted for connection, each span can be independently constructed from bottom to top, an upper layer aqueduct support is erected on a lower layer of constructed aqueduct, each layer of aqueduct can be constructed in a block mode according to a structure, and a side wall is added to a aqueduct bottom plate for one-time pouring molding;

s502, erecting a support frame by adopting steel pipes, transversely arranging a plurality of rows of upright posts with preset intervals at the bottom of a fishway groove, arranging a bottom support and a wide wood backing plate at the bottom of the support frame according to preset standards in the span direction of the upright posts, and adjusting the height of the top of the support frame by arranging a jacking;

A plurality of square timber blocks are uniformly arranged at the upper part of a fishway bottom longitudinal upright post jacking to serve as girder bottom trabeculae, a single steel pipe is transversely arranged to serve as girder bottom die supporting main girder, and the distance between the square timber blocks and the upright posts reaches a preset value;

s503, the upper bearing requirement can be met by checking that the concrete reaches 70% of the design strength, and the lower support frame can be removed after the lower support frame meets the demolding strength required by the specification and is not less than 70%.

Further, the first layer of fishway groove bottom mold mounting in step S60 comprises,

s601, integrally adopting a cladding wood plywood for the fishway groove, erecting a support frame to finish bottom die paving construction, paving a double-spliced steel pipe support main beam and a square wood trabecula in order according to the preset interval requirement before paving a template, paving a bottom die immediately, firstly abutting and nailing with a column head or an adjacent structure when paving, and using a wood bar as a vertical stop and a vertical stop support;

the first layer of fishway channel steel bar comprises,

s611, arranging concrete cushion blocks for supporting the steel bars between the steel bars and the templates, wherein the strength of the concrete cushion blocks is not lower than that of concrete at the same part, fastening the concrete cushion blocks by using steel wires embedded in cushion blocks and the steel bars, and arranging the cushion blocks in a staggered and dispersed way; a short steel bar support is adopted between two rows of steel bars;

s612, welding the steel bars, wherein a single-sided welding line is not less than 10d, a double-sided welding line is not less than 5d, and the height of the welding line is equal to or greater than 0.3d and is not less than 4mm; the width of the welding seam is equal to or more than 0.7d and not less than 8mm, wherein d is the diameter of the main rib;

The first layer fishway groove side mold installation comprises,

s621, adopting a cladding wood plywood as a template, fixing the periphery of the template and adopting square wood as surrounding purlins, wherein other surrounding purlins except the upper square wood and the lower square wood are vertically arranged, and the interval is a preset value;

s622, fixing the template by adopting an external top internal support and side wall opposite-pull mode;

outer top: when beams are arranged on two sides of the fishway groove, square timber and a template support are adopted by the beams, when no beams are utilized, steel pipes, jacking supports and outer bent frames are adopted to fix the supports, one channel is arranged up and down respectively, the longitudinal spacing is a preset value, the quincuncial arrangement is carried out, the first channel is arranged below the top of the side wall, and the second channel is arranged below the first channel;

and (3) inner support: adopting a steel pipe and a jacking to mutually support the inner side face template between the two side walls, wherein the height and the position of the inner support are the same as those of the outer jacking; the support positions are respectively provided with a double-spliced longitudinal steel pipe;

and (3) pulling: the inner and outer templates between each side wall are oppositely pulled by adopting a pair pull rod, an upper and a lower two are arranged, the positions of the upper and lower two are same as the outer top and the inner pull, and the interval is a preset value;

s623, fixing a bracket template by adopting a cladding wood plywood, fixing a bottom inclined plane template with a square wood surrounding purlin of a lower vertical face template, arranging square wood around a vertical template, fixing a bracket vertical template by adopting a split bolt with a side wall template on the other side, supporting the bottom by adopting a square wood support, and supporting the bracket templates on the two sides by adopting a square wood internal support template;

The joint is stuck with double-sided tape, the double-sided tape is stuck straight and is 1-2 mm away from the inner side of the panel, the double-sided tape is guaranteed to be flush with the inner side of the panel after being extruded, and the double-sided tape is prevented from being broken.

Further, the first layer of fishway groove concreting in step S70 comprises,

s701, pouring concrete from a low end to a high end by adopting an inclined layer interlayer, and vibrating by an inserted flexible shaft vibrator;

firstly pouring bottom plate concrete, paving the bottom plate concrete for 2-3 m, then pouring corresponding two side walls in layers, controlling the thickness of the side walls to be within a preset range, reserving thickness allowance, and after two layers of the side walls are poured and before initial setting of the bottom plate concrete does not occur, performing bottom plate concrete repair pouring;

wherein the free falling height of the concrete is not more than 1m.

Further, the manufacturing and installing of the prefabricated partition in step S90 includes,

s901, prefabricating a partition board in situ, wherein the prefabricating is finished by adopting a custom plastic mould steel bar to be processed and bound in a steel adding field, the prefabricated part is transported to by adopting a vehicle, the concrete is pumped into a warehouse by adopting an HBT40 drag pump, the partition board is vibrated by a flexible shaft vibrator, and a hoisting hole is formed in the top of the partition board during prefabricating;

s902, the partition plates are assembled, angle irons and expansion bolts are adopted to be fixedly connected with the bottom plate and the side walls, the distance between the bottom plate and the side walls is 25cm, and the distance between the side walls is 50cm;

The crane is installed from the high place to the low place block by block, the pull rule is adopted to position and mark the position according to the design requirement during hoisting, then hoisting and placing are carried out, the placing adopts the guiding rule to correct, the initial fixing is carried out immediately after the correction is completed, then the crane moves to the next installation point, and meanwhile, the final fixing construction is carried out by the staff arranging the initially fixed partition plates.

Compared with the existing construction precaution, the multi-layer disc-folded partition board vertical joint type fishway construction method for the bent frame has the advantages that the problems that the construction sequence and arrangement, the template planning design, the partition layering, the supporting design and the construction method are started, the requirement on the gradient of the fishway is eliminated, the bent frame is arranged in a plurality of rows, the bent frame is turned back at the end part of the bent frame, the multi-layer disc-folded cross beam is used as a fishway support according to the size of the total water head, the connecting beam is longitudinally arranged on the bent frame, the height of the longitudinal and transverse beam is frequently changed, and meanwhile, the problems that the single-layer column has no fixed size and the height of the fishway bearing support is greatly changed are avoided. The method for constructing the vertical seam type fishway of the multi-layer plate folding partition plate of the bent frame solves the problems of complex structure and high construction difficulty of the vertical seam type fishway of the multi-layer plate folding partition plate of the bent frame, and ensures the construction period.

Drawings

The invention will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a flow chart of a method for constructing a multi-layer disc-folded partition vertically-seamed fishway in an embodiment of the invention;

FIG. 2 is a cross-sectional view of a fish way trough formwork support bracket in accordance with an embodiment of the present invention;

FIG. 3 is an axial cross-sectional view of an embodiment of the aqueduct of the present invention;

FIG. 4 is a transverse cross-sectional view of an aqueduct according to an embodiment of the present invention;

FIG. 5 is a typical cross-sectional view of a fish way slot according to an embodiment of the invention.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1 and 2, the method for constructing the vertical joint type fishway of the multi-layer plate-folding partition board of the bent frame comprises the steps of bent frame construction and fishway construction;

wherein, the bent construction comprises the following steps,

s10, mounting a first layer of upright post reinforcing steel bars and mounting a first layer of column templates;

s20, erecting a first layer of frame beam supporting frames, installing a first layer of frame beam bottom die, and then installing first layer of frame beam reinforcing steel bars and installing first layer of frame beam side dies;

s30, mounting a first layer of frame beam embedded parts and pouring first layer of columns and beams;

s40, repeating the steps S10-S30 until the bent construction is completed;

the fishway construction comprises the following steps of,

S50, carrying out bearing support erection of the first layer of fishway groove;

s60, installing a bottom die of the first layer of fishway groove, installing reinforcing steel bars of the first layer of fishway groove and installing a side die of the first layer of fishway groove;

s70, pouring first-layer fishway groove concrete;

s80, repeating the steps S50-S70 until the fishway groove construction is completed;

s90, manufacturing and installing the prefabricated partition board.

Compared with the existing construction precaution, the multi-layer disc-folded partition board vertical joint type fishway construction method for the bent frame has the advantages that the problems that the construction sequence and arrangement, the template planning design, the partition layering, the supporting design and the construction method are started, the requirement on the gradient of the fishway is eliminated, the bent frame is arranged in a plurality of rows, the bent frame is turned back at the end part of the bent frame, the multi-layer disc-folded cross beam is used as a fishway support according to the size of the total water head, the connecting beam is longitudinally arranged on the bent frame, the height of the longitudinal and transverse beam is frequently changed, and meanwhile, the problems that the single-layer column has no fixed size and the height of the fishway bearing support is greatly changed are avoided. The method for constructing the bent partition plate vertical joint type fishway of the bent multi-layer plate solves the problems of complex structure and high construction difficulty of the bent partition plate vertical joint type fishway of the bent multi-layer plate, and ensures the construction period.

And the bent construction aspect.

(1) Preparation for construction

And finishing the foundation construction before the bent construction, and checking and accepting to be qualified. And measuring and rechecking the axial line position of each bent post, arranging foundation embedded bars, and cleaning the top surface of the foundation.

(2) First layer column reinforcement installation

1) The construction of the column ribs is firstly to set up a supporting scaffold, the same beam supporting frame is adopted to set up steel pipes, the longitudinal and transverse distances between the steel pipes and the beam supporting frame are equal or multiplied, the periphery of the operation surface is paved with springboards, and safety nets are hung.

2) When binding, according to the interval and the number of stirrups required by design, the stirrups are sleeved on the foundation (lower layer) embedded bars according to the staggered requirement of hooks, and then the column bars are erected. The binding buckles are inward and are convenient for the stirrups to move upwards, and the binding buckles are well bound with the embedded bars within the lap joint length and are not less than 3.

3) The column positioning rib is required to be arranged during installation, the main rib of the vertical stressed rib column is in straight threaded connection, and the connecting joint, the sleeve size and the thickness of the reinforcing steel bar protection layer are required to meet the design and specification requirements.

4) The joints of the stirrups are staggered on the vertical steel bars, the stirrups are perpendicular to the main steel bars, and the stirrups are bound with the main steel bars and the joints of the stirrups. The top surface of the junction of the lower layer vertical exposed rib and the beam is fixed by a column hoop.

5) The positions of the reinforcing steel bar joints need to avoid the stirrup encrypting area and are arranged in the area with the smallest stress, the adjacent reinforcing steel bar joints need to be staggered for 35d and are not smaller than 50cm, the thickness of the protective layer is noted during binding, the cushion blocks and the like are additionally arranged in time, the spacing is 100cm, and the casting molding quality is ensured.

6) The steel bars of the column and Liang Jietou are dense, the core hoop does not allow omission, the binding is really difficult, the stirrups are made into a spliced type, and after being bound in place, the stirrups are welded into a closed hoop according to the lap joint 10 d.

(3) First layer column template installation

1) The column template adopts a customized round steel template, and phi 20 high-strength bolts are connected and fixed. And combining the position and the size of the beam, wherein the standard column section adopts a double-spliced forming template, the joint of the standard column section and the unidirectional beam adopts a three-spliced forming template, and the joint of the standard column section and the bidirectional beam adopts a four-spliced forming template.

2) The installation of the column template is required to be carried out after the steel bar is inspected without problems and the inspection and acceptance procedures are finished, the garbage in the mold is required to be cleaned up before the mold is sealed, and the position of a beam opening is required to be left (or concrete is only poured below the beam bottom) during construction. The periphery of the template is fixed with the bent frame by steel pipes, so that the whole template is stable.

(4) The first layer frame beam supporting frame is erected

1) The beam support frame is erected by adopting steel pipes with the diameter of phi 48mm, 4 rows of upright posts are transversely arranged at the bottom of the beam, the spacing is 600mm, the spacing between the upright posts in the span direction is 600mm, the step distance is 1000mm, the bottom of the beam support frame is provided with a bottom support and a 20cm wide wood base plate, and the top of the support frame is subjected to height adjustment by arranging a top support. The upper part of each vertical column jacking is provided with double-spliced phi 48 multiplied by 3.2mm steel pipes as a girder bottom mould supporting girder, and the transverse direction is provided with 60 multiplied by 80mm square woods with a spacing of 200 and mm square woods as girder bottom trabeculae. When the span of the beam is larger than 4m, arching is performed according to 1/1000-3/1000 of the full span length.

(5) Bottom die installation of first-layer frame beam

1) The beam bottom template adopts a 1.5cm thick cladding wood plywood, the support frame is erected, and the bottom die paving construction is carried out after experience is passed. Before the template is paved, a double-spliced phi 48mm steel pipe support girder and a 60mm multiplied by 80mm multiplied by 2000mm square wooden trabecula are paved in order according to the design interval requirement, then a bottom die is paved, the bottom die is firstly butted with column heads or adjacent structures and nailed, and 60mm multiplied by 80mm square wooden bars are used as vertical shelves and vertical shelves for supporting.

(6) First layer frame beam reinforcement installation

1) Binding sequence: determining binding sequence, penetrating longitudinal steel bars of the beam, installing beam stirrups, binding steel bars, filling protection layers and checking and accepting the steel bars.

2) The stirrups are perpendicular to the main bars, the stirrup hooks are arranged in a staggered mode, and the crossing points of the stirrup corners and the longitudinal bars are firmly tied.

3) The tension bar joint of the beam cannot be arranged at the maximum bending moment of the beam, the joint positions are staggered from each other within the range of the section of the stress bar 30d (not less than 500 mm), the section area of the stress bar with the binding joint accounts for the total section area percentage of the stress bar, the tension area cannot exceed 25%, and the compression area cannot exceed 50%.

(7) Side die installation of first-layer frame beam

1) The side mould adopts a cladding wood plywood with the thickness of 1.5cm, the longitudinal enclosing purlin of the mould adopts square wood with the thickness of 50mm multiplied by 100mm, and the spacing is 25cm; the transverse enclosing purlin adopts double steel pipes, and the distance is 50cm.

2) The surface of the template is kept smooth and clean, and the mold release agent is evenly brushed, so that the spliced seams are tight. In order to ensure pouring elevation, measuring, positioning and scribing are adopted on the collecting surface elevation position of the template.

3) The beam template is paved and arranged to retreat from the two ends of the beam to the middle, the embedded wood is arranged in the beam, and the cleaning opening of the beam is arranged at the beam end.

4) The template is fixed in an external fixation and internal opposite-pulling mode, the external fixation adopts a template vertical steel pipe enclosing wall to be connected with a bottom cross rod of the bottom die, and the fastener is fixed; the opposite pulling adopts phi 16 pairs of pull rods, the upper and lower beams are respectively and correspondingly arranged, the longitudinal distance is 50cm, and the pull rods penetrate through phi 18PVC pipes.

5) In order to prevent the quality problems of uneven beam body, uneven beam bottom, uneven beam side die expansion and the like in the installation of the beam template, the side die should be covered with a bottom die during die supporting, and the blanking size at the joint of the beam die and the column die is slightly shortened.

(8) First layer frame beam embedded part installation

The bent beam is a fishway groove support, steel plates are fully paved on the top surface, anchor bars are welded on a processing plant according to the requirements of a design drawing, a tower crane is used for lifting the top surface of the finger beam, the gradient and the elevation of the top surface are strictly controlled by measurement, and spot welding is performed on the main beam bars. The top of the steel plate is provided with a concrete warehouse entry port of 20 multiplied by 20cm and the distance is 1.0-1.5 m, and the warehouse entry port is welded and recovered after the concrete pouring is completed.

(9) First layer column and beam concrete pouring

1) And (5) performing concrete pouring after the bent steel bars and the templates are installed and accepted by supervision and inspection. Pumping is adopted for the pouring of the bent frame concrete, 8m of the beam concrete tank truck is transported, an automobile pump is pumped into a bin, column concrete is poured firstly, and then pouring construction is carried out from the poured column end to the other end.

2) Before the column is poured, a layer of cement mortar with the same design mark with the thickness of 2-3 cm is paved, so that good joint between new and old concrete surfaces is ensured.

3) The concrete is intensively stirred in a concrete mixing station, the slump of the concrete is controlled to be 18+/-2 cm, and the initial setting time of the concrete is controlled to be 8 hours.

4) And (3) placing concrete into a warehouse: the string cylinder is arranged on the row frame column to the casting surface by 80-100 cm, so that segregation and aggregate separation of concrete are avoided; the beam is directly taken in the cabin by the automobile pump hose. The layering thickness is controlled to be 30-40 cm; the phi 50 flexible shaft is adopted for vibrating by the inserted vibrator, the vibrating depth of the vibrator is generally not more than 2/3-3/4 times of the length of the rod, the vibrator is required to be inserted and pulled out quickly and slowly during vibration, and the vibrator is moved up and down continuously, so that the vibrator is uniformly tamped, and the air bubbles on the surface of the concrete are reduced. When in layered pouring, the vibrating rod is inserted into the concrete at the lower layer by 10cm, the moving distance is not more than 1.5 times of the action radius of the vibrator, the distance between the vibrating rod and the side mould is kept at least 5cm, and the vibrating duration time of each vibrating part is 20-30 s, so that the concrete is not sunk any more, no air bubbles appear, and the surface of the concrete presents floating paste. The casting is continuously carried out, and the upper layer concrete is required to be cast and tamped before the lower layer concrete is initially set.

6) The vibrator is tightly forbidden to directly collide with the template steel bars and the embedded part during pouring, so that the periphery of the embedded part is carefully vibrated, and the pouring compactness is ensured. In the concrete pouring process, bleeding in the bin must be removed in time, the holes on the templates are strictly forbidden to remove water to bring mortar, and the mortar adhered to the surfaces of the templates and the reinforcing steel bars should be removed at any time. The surface flatness of the concrete is strictly controlled, so that the appearance quality is ensured.

7) In the concrete pouring process, special persons should be dispatched to watch the mould, the displacement and stability of the mould plate are strictly controlled, and once the displacement is generated, the mould plate is adjusted in time, and the support is reinforced.

8) Exposed beam surface collecting surface

When the concrete surface is folded, the concrete surface is scraped by a scraping ruler, and then the slurry is lifted by a wooden trowel, and then the concrete surface is smoothed by an iron trowel to be folded, so that the flatness of the concrete surface is ensured to meet the requirement.

9) Health preserving

After concrete pouring at normal temperature is completed, the exposed surface is wrapped by a plastic film in time and covered by a felt piece, so that the exposure time of the concrete on the surface is reduced as much as possible, and the surface moisture is prevented from evaporating. It should be noted that the covering does not directly contact the concrete surface until the concrete is initially set.

The sprinkling is carried out by arranging a shower pipe for curing, so that enough condensed water is ensured in the film, and the curing time is not less than 28 days.

10 Mold removing device

When the template is supported and disassembled, reliable footholds are set for operation at the height of more than 2 meters, and corresponding safety protection measures are provided. The die stripping sequence should follow the principle of first supporting and then removing, then supporting and first removing, and then supporting and removing from top to bottom. The beam side mold and the column mold can be disassembled after the concrete strength can ensure that the surface and the edges and corners of the component are not damaged by the disassembly of the template. The beam needs to bear the construction load of the layer beam, and can be removed after the strength reaches the design strength. And after the die is disassembled, the outer surfaces of the frame posts and the beams are timely covered and protected by films, and sprinkling maintenance or heat preservation treatment is carried out according to different seasons.

(10) Construction of remaining bent

Repeating the construction procedures (1) - (9) until the bent construction is completed, and dismantling the support frame according to the requirement after the bent construction is completed.

In the aspect of the fishway construction, refer to fig. 3 and fig. 4 together.

(1) The first layer of fishway groove bearing support is erected

1) The fishway grooves are folded along the space between the rack columns, 3 rows are total, 4 layers are arranged in each row, and rest rooms are adopted for connection. Each span can be independently constructed from bottom to top, an upper-layer aqueduct support is erected on a lower-layer constructed aqueduct, each layer of aqueduct can be constructed in a block mode according to a structure, and a aqueduct bottom plate and a side wall (containing brackets) are formed through one-step pouring.

2) The supporting frame is erected by adopting steel pipes with the diameter of phi 48mm, 6 rows of upright posts are transversely arranged at the bottom of the fishway groove, the distance between the upright posts in the span direction is 600 mm, the step distance is 1000mm, the bottom of the supporting frame is provided with a bottom support and a 20cm wide wood base plate, and the top of the supporting frame is subjected to height adjustment by arranging a top support. 9 square timber with the length of 6 multiplied by 8cm is uniformly arranged at the top of the vertical column jacking at the bottom of the fishway tank to serve as a girder bottom trabecula, and a single steel pipe with the length of phi 48 multiplied by 3.2mm is transversely arranged to serve as a girder bottom mould supporting girder, wherein the distance between the steel pipe and the vertical column is 600 mm.

3) The upper bearing requirement can be met by checking the concrete to 70% of the design strength, and the lower support frame can be removed and recycled after the lower support frame meets the demolding strength required by the specification and is not less than 70%. Other building methods and requirements with the first layer beam support frame.

(2) First layer fishway groove bottom die installation

The fishway groove is integrally covered with a wood plywood with the thickness of 1.5 cm. The bottom die is laid and controlled and required to be installed with the bottom die of the first layer of bent beam.

(3) First layer fishway groove steel bar installation

1) The steel bar installation is strictly carried out according to the design requirement, and the arrangement distance among installation is ensured to meet the design requirement. In order to ensure the thickness of the concrete protection layer, concrete cushion blocks for supporting the reinforcing steel bars are arranged between the reinforcing steel bars and the templates, the strength of the concrete cushion blocks is not lower than the design strength of the concrete at the same position, steel wires embedded in cushion blocks are used for fastening the reinforcing steel bars, and the cushion blocks are staggered and distributed; between two rows of reinforcing bars, a short reinforcing bar support is adopted to ensure accurate position.

2) The steel bars are welded, test welding is needed before welding, and after the steel bars are qualified, the steel bars can be subjected to formal welding, wherein the single-sided welding seam is not less than 10d, and the double-sided welding seam is not less than 5d. The height of the welding seam is equal to or greater than 0.3d and not less than 4mm; the width of the weld should be equal to or greater than 0.7d (d is the major rib diameter) and must not be less than 8mm. The welding material should meet the relevant regulations of the national current standard of construction Specification for hydraulic concrete reinforcing steel bars.

(4) First layer fishway groove side die installation

1) The template adopts a 1.5cm thick cladding wood plywood. The template is fixed all around and encloses the purlin and all adopts 5cm 10cm square timber, and other peripheral purlins except upper and lower two square timber are vertical setting, and the interval is 25cm, and the template is in the preceding processing of wood addition field, fortune to the scene use.

2) The template is fixed by adopting an external roof internal support and side wall opposite pulling mode, and the external roof is provided with: when the two sides of the fishway groove are provided with beams, square timber and a template support are adopted, when the fishway groove is used without beams, steel pipes, jacking supports and outer bent frames are adopted to fix the support, one channel of arrangement with a longitudinal distance of 200cm and plum blossom arrangement are respectively arranged up and down, the first channel is arranged at a position 75cm below the top of the side wall, and the second channel is arranged at a position 100cm below the first channel. And (3) inner support: the inner side face template between the two side walls is mutually supported by adopting a steel pipe and a jacking, and the height and the position of the inner support are the same as those of the outer jacking. The support positions are respectively provided with a double-spliced longitudinal steel pipe. And (3) pulling: the inner and outer templates between each side wall are oppositely pulled by phi 16 pairs of pull rods, and an upper and a lower two are arranged at the same position as the outer top and the inner pull, and the distance is 50cm.

3) The bracket template also adopts a 1.5cm thick cladding wood plywood, the bottom inclined plane template is fixed with a square timber surrounding purlin of the lower vertical face template, 5cm multiplied by 10cm square timber is arranged around the vertical template, the bracket vertical template adopts split bolts to be fixed with the other side wall template (a PVC pipe is sleeved on the inner bolt of the wall), the bottom adopts a square timber support (the bottom of the square timber is supported on a longitudinal steel pipe arranged on an inner support), and the bracket templates on two sides adopt square timber inner support templates. The joint is glued with double-sided tape, the glue is glued straight and is 1-2 mm away from the inner side of the panel, the double-sided tape is guaranteed to be flushed with the inner side of the panel after being extruded, the double-sided tape cannot be broken, the joint cannot be torn by hand, and the joint is cut by a blade.

(5) First layer fishway groove concrete pouring

1) The concrete is intensively mixed in a concrete mixing station, and is transported by adopting an 8m concrete transport vehicle, and because the aqueduct is positioned in the bent frame, the automobile is difficult to pump in a warehouse, and the HBT40 drag pump is used for pumping and the tower crane is lifted for in the warehouse.

2) And the concrete pouring adopts intermittent pouring between inclined layers from the low end to the high end, and the phi 50 inserted flexible shaft vibrator is vibrated. And during casting, firstly casting the bottom plate concrete, and casting the corresponding two side walls in layers according to the paving length of 2-3 m according to the supply and casting capacity, wherein the casting control thickness of the side walls is about 40 cm. Because the bottom plate of the fishway groove passes through the water surface and does not stand up with the template, the bottom plate cannot be subjected to one-time blanking and pouring molding, and a thickness allowance of about 10cm is reserved, so that the bottom plate is prevented from being ultrahigh due to concrete extrusion when two side walls are poured. And (5) after two layers of walls are poured and before initial setting of the bottom plate concrete does not occur, bottom plate concrete is subjected to post-pouring.

3) The free falling height of the concrete is not more than 1m, so that segregation and aggregate separation of the concrete are avoided. Other requirements and precautions are in the same section as the construction of bent concrete.

(6) Removing the mould, preserving, dismantling the support frame and the like

And (5) constructing chapters with the bent frame.

(7) Construction of residual fishway groove

Repeating the steps (1) - (6) until the construction is completed.

The prefabricated partition is manufactured and installed, and refer to fig. 5 together.

(1) Prefabrication of partition plate

The partition board is prefabricated in situ, and construction is started after the bearing support of each layer of fishway groove is removed and the cleaning of the groove is completed. Prefabrication is finished by processing and binding steel bars of a custom plastic mould in a steel adding field, transporting to an inlet of a bent frame by adopting a flat car, then transporting to the prefabrication place by manually pushing a small cart, pumping concrete into a warehouse by adopting an HBT40 drag pump, and vibrating by adopting a phi 30 flexible shaft vibrator. And a hoisting hole is formed in the top of the partition plate during prefabrication.

(2) Baffle plate installation

The partition plate is assembled, angle iron and expansion bolts are adopted to be fixedly connected with the bottom plate and the side walls, angle steel is 100 multiplied by 10, the expansion bolts are M16 multiplied by 120, the distance between the bottom plates is 25cm, and the distance between the side walls is 50cm. The hoisting adopts a movable electric hoist portal of 1.5t, is installed from a high place to a low place one by one, is positioned by a pull rule according to the position required by design and marked during hoisting, then is hoisted and placed, is corrected by a guiding rule, is immediately fixed after correction, and then is moved to the next installation point, and meanwhile, the final fixing construction is carried out by the staff arranged by the primary fixed partition plates.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims (10)

1. A bent multi-layer plate partition board vertical joint type fishway construction method is characterized by comprising bent construction and fishway construction;

wherein, the bent construction comprises the following steps,

s10, mounting a first layer of upright post reinforcing steel bars and mounting a first layer of column templates;

s20, erecting a first layer of frame beam supporting frames, installing a first layer of frame beam bottom die, and then installing first layer of frame beam reinforcing steel bars and installing first layer of frame beam side dies;

s30, mounting a first layer of frame beam embedded parts and pouring first layer of columns and beams;

s40, repeating the steps S10-S30 until the bent construction is completed;

the fishway construction comprises the following steps of,

s50, carrying out bearing support erection of the first layer of fishway groove;

s60, installing a bottom die of the first layer of fishway groove, installing reinforcing steel bars of the first layer of fishway groove and installing a side die of the first layer of fishway groove;

s70, pouring first-layer fishway groove concrete;

s80, repeating the steps S50-S70 until the fishway groove construction is completed;

s90, manufacturing and installing the prefabricated partition board.

2. The method for constructing a vertically slotted fishway of a multi-layered disc separator of bent frame according to claim 1, wherein the first layer of column reinforcement installation in step S10 comprises,

S101, erecting a support scaffold, namely erecting steel pipes of the same beam support frame in the step S20, wherein the longitudinal and transverse distances between the steel pipes and the beam support frame are equal or multiplied, and paving springboards around an operation surface and hanging safety nets;

s102, binding according to the interval and the number of stirrups required by design, staggering the stirrups according to hooks and sleeving the stirrups on lower-layer foundation embedded bars, then standing up upright post bars, and binding inwards according to preset requirements on overlap joint length and binding buckles;

s103, arranging upright post positioning ribs, wherein main ribs of the vertical stressed rib columns are connected through straight threads, and the sizes of the connecting joints and the sleeves and the thickness of the reinforcing steel bar protection layers meet preset requirements;

the joints of the stirrups are staggered on the vertical steel bars, the stirrups are perpendicular to the main bars, the stirrups are bound with the joints of the main bars and the stirrups, and the top surface of the joint of the vertical exposed bar at the lower layer and the beam is fixed by a column hoop;

the positions of the reinforcing steel bar joints are avoided from the stirrup encrypting area and are arranged in the stress minimum area, the adjacent reinforcing steel bar joints are staggered for 35d and are not smaller than 50cm, cushion blocks are additionally arranged after the thickness of the protective layer reaches a threshold value, and the distance is 100cm;

and (3) making stirrups into spliced parts with difficult binding, and welding the stirrups into a closed hoop according to lap joints 10d after binding in place.

3. The method for constructing a bent multi-deck plate vertically-seamed fishway of claim 1, wherein the first-deck formwork installation in step S10 comprises,

s111, connecting and fixing column templates by high-strength bolts, wherein a standard column section adopts a double-splicing shaping template, a joint of the standard column section and a unidirectional beam adopts a three-splicing shaping template, and a joint of the standard column section and a bidirectional beam adopts a four-splicing shaping template;

s112, checking and accepting the column mould before sealing the mould, reserving the position of a beam outlet or pouring concrete below the beam bottom, and fixing the periphery of the mould plate with a bent frame by using a steel pipe.

4. The method for constructing a vertically slotted fishway of a multi-layered plate separator for a bent frame according to claim 1, wherein the step of erecting the first layer frame beam support frame and installing the first layer frame beam bottom mold in step S20 comprises,

s201, erecting a beam support frame by adopting steel pipes, arranging a plurality of rows of upright posts at the beam bottom transversely according to preset intervals, arranging a bottom support and a wide wood backing plate at the bottom according to preset requirements, arranging double-spliced steel pipes at the upper part of each row of upright post top supports longitudinally as a beam bottom die supporting main beam, arranging square wood at intervals transversely as beam bottom trabeculae, and arching according to 1/1000-3/1000 of the full span length when the beam span is more than 4 m;

S202, adopting a cladding wood plywood for a beam bottom template, erecting a support frame to finish bottom die paving construction, paving a double-spliced steel pipe support main beam and a square wood trabecula in order according to the preset interval requirement before paving the template, paving a bottom die immediately, firstly abutting and nailing with a column head or an adjacent structure, and using a wood bar as a vertical stop and a vertical stop support during paving.

5. The method for constructing a vertically slotted fishway of a multi-layered disc separator of bent frame of claim 1, wherein the installing of the first layer of frame beam rebar in step S20 comprises,

s211, binding the steel bars according to a preset sequence, wherein the steel bars comprise longitudinal steel bars of the penetrating beam, stirrups of the mounting beam, binding steel bars and pad protection layers;

the binding needs to meet the following requirements that stirrups are perpendicular to the main bars, stirrup hooks are arranged in a staggered mode, and crossing points of the corner of the stirrups and the longitudinal bars are firmly bound;

the tension steel bar joint of the beam is prevented from being arranged at the maximum bending moment of the beam, the joint positions are staggered from each other within the range of the section of the stress steel bar 30d and are not less than 500mm, the section area of the stress steel bar with the binding joint accounts for not more than 25 percent of the total section area of the stress steel bar in the tension zone, and the compression zone is not more than 50 percent;

performing a first tier frame beam side die installation includes,

S211, adopting a cladding wood plywood for the side mould, adopting square wood for the longitudinal enclosing purlin of the mould and adopting double steel pipes for the transverse enclosing purlin;

s212, keeping the surface of the template flat and uniformly brushing a release agent, tightly assembling joints, measuring, positioning and scribing at the height position of the surface of the template;

s213, spreading and arranging beam templates, backing from two ends of the beam to the middle, arranging the embedded wood in the beam, and arranging a cleaning opening of the beam at the beam end;

s214, fixing the template by adopting an external fixing and internal opposite pulling mode, wherein the external fixing adopts a mode that a vertical steel pipe of the template is enclosed and connected with a cross rod at the bottom of the bottom die, and a fastener is fixed; the opposite pulling adopts opposite pulling rods, the upper and lower beams are respectively and correspondingly provided with one channel, the longitudinal distance is a preset distance, and the pulling rods penetrate through the PVC pipe; and, should wrap the die block with the side form during the formwork, beam mold and column mold junction, the unloading size is shortened slightly.

6. The method for constructing a vertically slotted fishway of a bent multi-layer plate separator of claim 1, wherein the installing of the first layer of frame cross beam embedment in step S30 comprises,

s301, fully paving a steel plate on the top surface of a bent beam, welding anchor bars, lifting to the top surface of the beam, measuring and controlling the gradient and the elevation of the top surface to be in a preset range, and spot-welding on a main beam bar of the beam; the top of the steel plate is provided with concrete warehouse entry ports, the distance is 1.0-1.5 m, and the warehouse entry ports are welded and restored after the concrete pouring is completed;

The concrete casting of the first layer of columns and beams comprises,

s301, pouring the bent frame by adopting pumping concrete, transporting the concrete tank truck, pumping the concrete into a bin by using an automobile pump, pouring column concrete firstly, and then pouring the poured column end to the other end for construction;

s302, paving a layer of cement mortar with the same label and thickness of 2-3 cm before pouring the column;

s303, intensively mixing concrete in a concrete mixing station, wherein the slump of the concrete is controlled to be 18+/-2 cm, and the initial setting time of the concrete is controlled to be 8 hours;

s304, placing concrete into a warehouse: mounting a string cylinder to the pouring surface by 80-100 cm for the row frame column, and directly warehousing the beam by using an automobile pump hose; the layering thickness is controlled to be 30-40 cm; the flexible shaft inserted vibrator is adopted for vibrating, the vibrating depth of the vibrator is generally not more than 2/3-3/4 times of the length of the rod, the vibrator is required to be quickly inserted and pulled out during vibrating, the vibrator is continuously moved up and down, and the tamping is uniform;

the vibrating rod is inserted into the lower concrete layer for 10cm during layered pouring, the moving distance is not more than 1.5 times of the action radius of the vibrator, at least 5cm distance is kept between the vibrating rod and the side mould, and the vibrating duration time is 20-30 s for each vibrating part, so that the concrete is not sunk any more, no air bubble appears, and the surface presents floating paste;

pouring is continuously carried out, and the upper layer concrete is poured and tamped before the initial setting of the lower layer concrete;

S305, removing bleeding in a pouring middle bin, avoiding perforating a hole on a template to remove water and bring mortar, removing mortar adhered to the surfaces of the template and the steel bars at any time, and controlling the surface evenness of the concrete in a preset range; the appearance quality is ensured;

s306, carrying out surface collecting on the exposed surface of the beam, scraping the exposed surface by using a scraping rule, then using a wooden trowel to put out slurry, trowelling and collecting light by using an iron trowel, and ensuring that the surface flatness of the concrete meets the requirement;

s307, curing, namely wrapping the exposed surface by a plastic film after concrete pouring at normal temperature is completed, and covering the exposed surface by a felt sheet, wherein the cover is prevented from directly contacting the surface of the concrete until the concrete is initially set;

the sprinkling is carried out by arranging a shower pipe for curing, so that enough condensed water is ensured in the film, and the curing time is not less than 28 days;

s308, removing the mould, setting reliable footholds for operation at the height of more than 2 meters when the mould is removed, and having corresponding safety protection structures;

the form removal sequence should follow the principle of supporting before removing and supporting after removing, and the beam side forms and the column forms can be removed after the concrete strength can ensure that the surfaces and edges of the components are not damaged by removing the form, and the beam needs to bear the layer beam construction load and can be removed after the strength reaches the design strength;

And after the die is disassembled, the outer surface of the frame post and the beam is covered and protected by a film, and sprinkling maintenance or heat preservation treatment is carried out according to seasons.

7. The method for constructing a vertically slotted fishway of the bent multi-layer separator of claim 1, wherein the step S50 comprises the steps of,

s501, a fishway groove is folded along the space between the rows of frame columns, rest rooms are adopted for connection, each span can be independently constructed from bottom to top, an upper layer aqueduct support is erected on a lower layer of constructed aqueduct, each layer of aqueduct can be constructed in a block mode according to a structure, and a side wall is added to a aqueduct bottom plate for one-time pouring molding;

s502, erecting a support frame by adopting steel pipes, transversely arranging a plurality of rows of upright posts with preset intervals at the bottom of a fishway groove, arranging a bottom support and a wide wood backing plate at the bottom of the support frame according to preset standards in the span direction of the upright posts, and adjusting the height of the top of the support frame by arranging a jacking;

a plurality of square timber blocks are uniformly arranged at the upper part of a fishway bottom longitudinal upright post jacking to serve as girder bottom trabeculae, a single steel pipe is transversely arranged to serve as girder bottom die supporting main girder, and the distance between the square timber blocks and the upright posts reaches a preset value;

s503, the upper bearing requirement can be met by checking that the concrete reaches 70% of the design strength, and the lower support frame can be removed after the lower support frame meets the demolding strength required by the specification and is not less than 70%.

8. The method for constructing a vertically slotted fishway of the bent multi-layered plate partition of claim 1, wherein the installing of the first fishway slot bottom mold in step S60 comprises,

s601, integrally adopting a cladding wood plywood for the fishway groove, erecting a support frame to finish bottom die paving construction, paving a double-spliced steel pipe support main beam and a square wood trabecula in order according to the preset interval requirement before paving a template, paving a bottom die immediately, firstly abutting and nailing with a column head or an adjacent structure when paving, and using a wood bar as a vertical stop and a vertical stop support;

the first layer of fishway channel steel bar comprises,

s611, arranging concrete cushion blocks for supporting the steel bars between the steel bars and the templates, wherein the strength of the concrete cushion blocks is not lower than that of concrete at the same part, fastening the concrete cushion blocks by using steel wires embedded in cushion blocks and the steel bars, and arranging the cushion blocks in a staggered and dispersed way; a short steel bar support is adopted between two rows of steel bars;

s612, welding the steel bars, wherein a single-sided welding line is not less than 10d, a double-sided welding line is not less than 5d, and the height of the welding line is equal to or greater than 0.3d and is not less than 4mm; the width of the welding seam is equal to or more than 0.7d and not less than 8mm, wherein d is the diameter of the main rib;

the first layer fishway groove side mold installation comprises,

s621, adopting a cladding wood plywood as a template, fixing the periphery of the template and adopting square wood as surrounding purlins, wherein other surrounding purlins except the upper square wood and the lower square wood are vertically arranged, and the interval is a preset value;

S622, fixing the template by adopting an external top internal support and side wall opposite-pull mode;

outer top: when beams are arranged on two sides of the fishway groove, square timber and a template support are adopted by the beams, when no beams are utilized, steel pipes, jacking supports and outer bent frames are adopted to fix the supports, one channel is arranged up and down respectively, the longitudinal spacing is a preset value, the quincuncial arrangement is carried out, the first channel is arranged below the top of the side wall, and the second channel is arranged below the first channel;

and (3) inner support: adopting a steel pipe and a jacking to mutually support the inner side face template between the two side walls, wherein the height and the position of the inner support are the same as those of the outer jacking; the support positions are respectively provided with a double-spliced longitudinal steel pipe;

and (3) pulling: the inner and outer templates between each side wall are oppositely pulled by adopting a pair pull rod, an upper and a lower two are arranged, the positions of the upper and lower two are same as the outer top and the inner pull, and the interval is a preset value;

s623, fixing a bracket template by adopting a cladding wood plywood, fixing a bottom inclined plane template with a square wood surrounding purlin of a lower vertical face template, arranging square wood around a vertical template, fixing a bracket vertical template by adopting a split bolt with a side wall template on the other side, supporting the bottom by adopting a square wood support, and supporting the bracket templates on the two sides by adopting a square wood internal support template;

the joint is stuck with double-sided tape, the double-sided tape is stuck straight and is 1-2 mm away from the inner side of the panel, the double-sided tape is guaranteed to be flush with the inner side of the panel after being extruded, and the double-sided tape is prevented from being broken.

9. The method for constructing a vertically slotted fishway of the bent multi-layered plate separator of claim 1, wherein the concreting of the fishway groove of the first layer in step S70 comprises,

s701, pouring concrete from a low end to a high end by adopting an inclined layer interlayer, and vibrating by an inserted flexible shaft vibrator;

firstly pouring bottom plate concrete, paving the bottom plate concrete for 2-3 m, then pouring corresponding two side walls in layers, controlling the thickness of the side walls to be within a preset range, reserving thickness allowance, and after two layers of the side walls are poured and before initial setting of the bottom plate concrete does not occur, performing bottom plate concrete repair pouring;

wherein the free falling height of the concrete is not more than 1m.

10. The method for constructing a vertically slotted fishway of a multi-layered disc-folded spacer of a bent frame as claimed in claim 1, wherein the fabricating and installing the prefabricated spacer in step S90 comprises,

s901, prefabricating a partition board in situ, wherein the prefabricating is finished by adopting a custom plastic mould steel bar to be processed and bound in a steel adding field, the prefabricated part is transported to by adopting a vehicle, the concrete is pumped into a warehouse by adopting an HBT40 drag pump, the partition board is vibrated by a flexible shaft vibrator, and a hoisting hole is formed in the top of the partition board during prefabricating;

s902, the partition plates are assembled, angle irons and expansion bolts are adopted to be fixedly connected with the bottom plate and the side walls, the distance between the bottom plate and the side walls is 25cm, and the distance between the side walls is 50cm;

The crane is installed from the high place to the low place block by block, the pull rule is adopted to position and mark the position according to the design requirement during hoisting, then hoisting and placing are carried out, the placing adopts the guiding rule to correct, the initial fixing is carried out immediately after the correction is completed, then the crane moves to the next installation point, and meanwhile, the final fixing construction is carried out by the staff arranging the initially fixed partition plates.