CN113216707A - Construction method of pool wall of towing pool - Google Patents
Construction method of pool wall of towing pool Download PDFInfo
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- CN113216707A CN113216707A CN202110463952.7A CN202110463952A CN113216707A CN 113216707 A CN113216707 A CN 113216707A CN 202110463952 A CN202110463952 A CN 202110463952A CN 113216707 A CN113216707 A CN 113216707A
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- 238000010276 construction Methods 0.000 title claims abstract description 43
- 238000009415 formwork Methods 0.000 claims abstract description 57
- 229910000746 Structural steel Inorganic materials 0.000 claims abstract description 24
- 238000012795 verification Methods 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 12
- 238000009432 framing Methods 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 48
- 239000010959 steel Substances 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000002023 wood Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000012945 sealing adhesive Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 3
- 238000012549 training Methods 0.000 abstract description 3
- 230000001788 irregular Effects 0.000 abstract description 2
- 235000000396 iron Nutrition 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H4/00—Swimming or splash baths or pools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
- B63B71/20—Designing vessels; Predicting their performance using towing tanks or model basins for designing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6806—Waterstops
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/04—Forming boards or similar elements the form surface being of wood
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a construction method of a towing tank wall, which comprises the steps of paying off and positioning, positioning angle iron installation, full framing erection, wall formwork installation and fixation, wall formwork verification and concrete pouring. The material has light weight, few types of accessories, easy engineering operation, small dependence on hoisting machinery and lower transportation cost and processing cost. The construction method is simple in operation, does not need additional training for workers, can effectively reduce the management cost, and is suitable for irregular multi-storey buildings.
Description
Technical Field
The invention relates to a construction method, in particular to a construction method of a pool wall of a towing pool.
Background
The towing tank is mainly used for testing ship models to know the motion, the navigational speed, the propulsion power and other performances of ships. The construction of the towing tank has important significance for talent culture, scientific research, national defense service towards 'deep blue' and local economy. The particularity of the towing tank has extremely high requirements on construction quality, wherein the highest requirements are the tank wall, the vertical flatness of the tank wall, the parallelism of the tank wall, the sedimentation deformation and other technical problems restrict construction units and construction units.
The construction of the existing towing tank wall only needs to adopt a mode that a steel truss is matched with an aluminum template or a steel template, and the steel truss support has the advantages of good integrity, strong stability, high rigidity and the like. The steel die or the aluminum die has the advantages of being reusable, energy-saving, environment-friendly, capable of being used in factories and the like. But can be recycled but still have the recasting cost. And the recycling is limited to be suitable for high-rise and super high-rise buildings. The template surface is difficult to repair after being damaged, and workers need secondary training. The dead weight is great, and tower machine degree of dependence is high. The construction noise is big. And they have a common disadvantage of high cost. Higher construction cost restricts the participation of medium and small construction units, and in order to reduce the construction cost and to finish the project in a qualified way, a new construction method and a new construction scheme need to be explored.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned deficiencies of the prior art and providing a method of constructing a wall of a towing tank.
The technical scheme provided by the invention is as follows: a construction method of a pool wall of a towing pool is characterized by comprising the following steps:
1) paying-off positioning
Firstly, a wall body sideline is formed, after the raft construction is finished, a total station, a theodolite and a GPS are used for positioning corner points of the wall body and lofting the sideline, after the wall body sideline is formed in an elastic mode, a steel ruler is used for forming a construction control line in an elastic mode, the construction control line is parallel to the wall sideline, and the distance between the construction control line and the wall sideline is 20-50 cm;
2) positioning angle iron installation
The positioning angle iron is accurately fixed on the vertical ribs of the pool wall through the side line of the wall body and the construction control line, and the outer vertical surface of the positioning angle iron is superposed and vertical to the side line of the wall body and can be attached to the wall body template; the positioning angle iron is fixed on the wall vertical rib by welding, and is fixed by welding short steel bars, the angle and the height of the positioning angle iron are adjusted at any time, and the vertical surface of the positioning angle iron can be tightly attached to the wall template;
3) erecting full scaffold
A full-hall supporting scaffold is erected in the water pool and used for supporting the wall formwork, ensuring the net width of the water pool and providing an operation platform; setting up the position of a front upright rod of a full scaffold frame body to perform paying-off positioning pre-arrangement, wherein the root of the upright rod is provided with a fixing measure;
4) wall form mounting and fixing
The wall body formwork is installed in a modularized splicing mode, the wall body formwork is formed by splicing a plurality of wall body formwork modules, the splicing seams among the wall body modules are controlled within 2mm, and if the deformation of the plate cannot reach 2mm, edge planing or sealing adhesive tapes are adopted for processing; the vertical abutted seams among the wall template modules are fixed by adopting battens or steel-clad wood across seams, the battens or the steel-clad wood have the same size as the secondary keels and are fixed by adopting iron nails, the nail distance is controlled to be 250mm, and the transverse abutted seams are fully adhered with sealing tapes to prevent slurry leakage; after the wall formwork is assembled, the flatness of the joint needs to be checked to ensure that the requirements are met; the wall body modules need to be pre-assembled before being hoisted, and can be formally assembled after pre-judging that the assembly is correct;
firstly, mounting and fixing an inner wall formwork, splicing the inner wall formwork according to the mounting method of the wall formwork, and checking the flatness of splicing seams to ensure that the requirements are met; after the inner wall formwork is spliced, installing and fixing the through-wall split water-stop bolt and the main keel and the secondary keel of the inner wall formwork; the main keel and the secondary keel of the wall form adopt square steel reinforcing systems with high rigidity and good binding surfaces, the wall thickness of the square steel is not less than 2mm, and the requirement of the lateral pressure of the wall concrete is ensured to be met through strength checking calculation; the secondary keel of the inner wall formwork is long up and down, if the secondary keel cannot be long, the secondary keel is overlapped, and the overlapping distance is not less than 1.2 m; when the main keel is made in a customized mode, a matched joint is needed, and when the main keel is made of two common square steel keels, joints of an upper keel and a lower keel are staggered by 2 m; after the main keel and the secondary keel of the inner wall template are installed, the inner wall template is subjected to preliminary verification and is effectively and fixedly connected with a full framing scaffold;
the inner wall formwork is qualified in verification and is effectively fixed with a full framing scaffold, and then the outer wall formwork is installed and fixed; assembling the outer wall formworks according to the installation method of the wall formworks, checking the flatness of the joints to ensure that the requirements are met, and arranging reserved holes on the outer wall formworks; firstly, correctly inserting the installed through-wall split water-stop bolt into a reserved hole of an outer wall template, installing a main keel and an auxiliary keel of the outer wall template after the insertion is finished, wherein the main keel and the auxiliary keel of the wall template adopt square steel reinforcing systems with higher rigidity and better binding surfaces, the wall thickness of the square steel is not less than 2mm, and the requirement on the lateral pressure of wall concrete is ensured to be met through strength checking calculation; performing preliminary verification after the main keel and the secondary keel of the outer wall template are installed and fixed; after the outer wall template is fixed in place, a jackscrew is supported on the side wall of the foundation pit by matching with a steel pipe to prevent the template from expanding, and the vertex of the jackscrew is preferably positioned on the main keel of the outer wall template and cannot be jacked on the secondary keel;
5) wall form verification
After the inner wall template and the outer wall template are completely installed and fixed and preliminarily verified, verifying the whole wall template; the method for hanging the steel strands on the wall body in a penetrating manner is adopted, namely, three horizontal steel strands which are long in a penetrating manner are hung on the same vertical line along the height direction of each wall body according to a construction control line, and a plumb hammer is matched for assisting in checking; before checking, checking the horizontal lines to ensure that the three horizontal lines are in the same vertical plane; the checking process generates written records, and the point with overlarge deviation is regulated and then is rechecked;
6) pouring concrete
Symmetrically pouring concrete on the wall of the pool, wherein the pouring height difference of the symmetrical wall is not more than 500 mm; the casting speed is controlled to be 20m per hour3-30m3And the concrete of the next layer is poured before the initial setting of the concrete of the next layer, so that cold joints cannot be generated; pouringIn the process, the sleeve is used for conveying the concrete to each layer elevation position, and the height of the free falling body of the concrete cannot exceed 1 m;
the inner side wall template and the square steel reinforcement system, and the outer side wall template and the square steel reinforcement system need to be checked and adjusted in time according to the concrete pouring height in the concrete pouring process;
the concrete of the pool wall is poured in layers, the height of each layer is 500mm, and the record is immediately adjusted after the concrete is poured for two layers and the wall template is checked once for 1000 mm.
Furthermore, in the installation step of the positioning angle iron, the positioning angle iron is galvanized in a moisture-sensitive environment.
Further, in the step of building the full hall scaffold, the fixing measures are that steel bars are embedded in the raft plate during concrete pouring or expansion bolts are additionally arranged in the later period.
Furthermore, in the step of installing and fixing the wall formworks, the main keel and the secondary keel of the inner side wall formwork are fixedly connected with the full framing scaffold in a positive and negative wire pull rod or other hinge modes. Furthermore, in the step of checking the wall template, the steel strand with the diameter of 0.5-0.7mm and the tensile force of 25kg-30kg is selected as the steel strand.
The invention has the beneficial effects that: the full framing scaffold is matched with the high-strength wood formwork, the frame body is high in rigidity, the material obtaining cost is low, when the structure has no repeated use condition, the high-strength wood formwork can be used for other projects or parts by cutting, and the construction cost can be obviously reduced compared with an aluminum mould and a steel mould. The material has light weight, few types of accessories, easy engineering operation, small dependence on hoisting machinery and lower transportation cost and processing cost. The construction method is simple in operation, does not need additional training for workers, can effectively reduce the management cost, and is suitable for irregular multi-storey buildings.
Description of the drawings:
FIG. 1 is a schematic diagram of a wall form panel joint of the present invention;
fig. 2 is a schematic view of wall form reinforcement of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings in which:
a construction method of a pool wall of a towing pool specifically comprises the following steps:
1) paying-off positioning
The method comprises the steps of firstly, using a total station, a theodolite and a GPS to position corner points of a wall body and lofting elastic lines after raft construction is finished, and using a steel ruler to perform elastic setting of construction control lines after the wall body side lines are elastically set, wherein the construction control lines are parallel to the wall side lines, the distance is 20-50cm, a plurality of the construction control lines can be elastically set according to field requirements, and the construction control lines mainly provide basis for facilitating installation of positioning angle irons and later-stage installation and verification of inner and outer wall templates.
2) Positioning angle iron installation
Before the wall body formwork is installed, positioning angle irons are required to be installed at the root of the wall body in advance, the positioning angle irons are accurately fixed on the pool wall stud through the wall body side line and the construction control line, and the outer vertical faces of the positioning angle irons are overlapped and perpendicular to the wall body side line and can be well attached to the wall body formwork. The positioning angle iron mainly has the function of preventing the wall form from displacement and ensuring the accurate size of the section of the wall.
The positioning angle iron is fixed on the wall vertical rib in a welding mode, short steel bars are welded and fixed, the vertical face of the positioning angle iron can incline due to the influence of the ground levelness in the welding process, the angle and the height of the positioning angle iron are adjusted at any time during construction, the vertical face of the positioning angle iron can be tightly attached to a wall formwork, and the positioning angle iron is selected to be galvanized in an environment prone to being affected by dampness.
3) Erecting full scaffold
The height is pour to the wall of considering the pond wall, sets up full hall in the pond and supports the scaffold for support wall form, guarantee the clean width in pond and provide operation platform.
The full hall scaffold frame body sets up preceding pole setting position and should carry out unwrapping wire location and arrange in advance, and for preventing full hall scaffold frame overall displacement, the pole setting root should have fixed measure, and fixed measure can adopt raft board when concrete placement embedded steel bar or later stage to add methods such as establishing expansion bolts.
The full hall scaffold is erected by adopting a conventional method, the distance between the vertical rods and the step distance between the horizontal rods are determined according to engineering characteristics and stress conditions, and the stress conditions are calculated if necessary. Longitudinal and transverse cross braces and horizontal cross braces are arranged in the full hall frame hand rack according to actual conditions.
4) Wall form mounting and fixing
The installation of wall body template adopts the mode of modularization concatenation to install, and the wall body template is formed by the concatenation of a plurality of wall body template module, and the piece control between the wall body template module is within 2mm, if panel warp can not reach 2mm then take the edge planing or sealed sticky tape to handle. As shown in figure 1, the vertical joints among the wall template modules are fixed by adopting battens or steel-clad wood across joints (the size of the battens or the steel-clad wood needs to be the same as that of the secondary keel), are fixed by adopting iron nails, the nail distance is controlled to be 250mm, the excessive density is not favorable for dismounting, the excessive density is not favorable for flattening the joints, and the transverse joints among the wall template modules are fully pasted with sealing tapes to prevent slurry leakage. After the wall formwork is assembled, the flatness of the joint needs to be checked to ensure that the requirements are met. The wall body modules need to be pre-assembled before being hoisted, the aim is to check and ensure that the joints, the sizes and the positions meet the requirements, and the wall body modules can be assembled formally after being pre-assembled without errors.
Firstly, mounting and fixing an inner wall formwork, splicing the inner wall formwork according to the mounting method of the wall formwork, and checking the flatness of splicing seams to ensure that the requirements are met; in order to ensure the flatness and the verticality of the inner wall template, the wall-penetrating counter-pulling water-stopping bolts and the main keel and the secondary keel of the inner wall template are installed and fixed after the inner wall template is spliced. The main keel and the secondary keel of the wall form adopt square steel reinforcing systems with high rigidity and good binding surfaces, the wall thickness of the square steel is not less than 2mm, and the requirement of the lateral pressure of the wall concrete is met through strength checking calculation. The secondary keel of the inner wall formwork is long up and down, if the secondary keel cannot be long, the secondary keel is overlapped, and the overlapping distance is not less than 1.2 m. When the main keels of the inner wall formwork are customized, matched joints are needed, and when two common square steel keels are adopted, joints of an upper keel and a lower keel are required to be staggered by 2 m; as shown in fig. 2, after the primary and secondary keels of the inner wall form are installed, the inner wall form is subjected to preliminary verification and is then effectively and fixedly connected with the full framing scaffold, the selection of the fixed connection mode needs to consider the verification and adjustment in the later stage, and the connecting piece should select the positive and negative wire connecting rods, so that the point-by-point adjustment can be performed during the later-stage wall form verification.
And the inner wall formwork is qualified in verification and is effectively fixed with the full framing scaffold, and then the outer wall formwork is installed and fixed. Assembling the outer wall formworks according to the installation method of the wall formworks, checking the flatness of the joints to ensure that the requirements are met, and arranging reserved holes on the outer wall formworks; firstly, correctly inserting the installed through-wall split water-stop bolt into a reserved hole of the outer wall formwork, installing a main keel and an auxiliary keel of the outer wall formwork after the insertion is finished, selecting a square steel reinforcing system with high rigidity and good binding face for the main keel and the auxiliary keel of the wall formwork, ensuring that the wall thickness of the square steel is not less than 2mm, and ensuring that the requirement of the lateral pressure of wall concrete is met through strength checking calculation. And performing preliminary verification after the main keel and the secondary keel of the outer wall template are installed and fixed. After the outer wall template is fixed in place, a jackscrew is supported on the side wall of the foundation pit by matching with a steel pipe to prevent the template from expanding, the vertex of the jackscrew is preferably positioned on a main keel of the outer wall template and cannot be jacked on the secondary keels, and the main keel transmits force to the plurality of secondary keels, so that the control of precision is facilitated; to ensure force transmission.
5) Wall form verification
And after the inner wall template and the outer wall template are completely installed and fixed and preliminarily verified, the whole wall template needs to be verified. The checking method is a method for hanging steel strands on a wall body; namely, each wall body hangs three horizontal long steel stranded wires on the same vertical line along the height direction according to a construction control line and is matched with a plumb bob for auxiliary verification.
The steel strand is selected from steel strands with the diameter of 0.5-0.7mm and the tensile force of 25-30 kg, horizontal lines are checked before checking, and the three horizontal lines are ensured to be on the same vertical plane. The checking process should produce written records, and the point with excessive deviation should be checked again after adjustment.
6) Pouring concrete
Should balance the pouring when pool wall concrete placement, the symmetry wall body pouring height difference must not exceed 500mm, prevents the local unstability of full hall scaffold frame.
Casting speedNot too fast, and is controlled at 20m per hour3-30m3And the concrete of the next layer is poured before the initial setting of the concrete of the next layer, so that cold joints cannot be generated. In the pouring process, the sleeves are used for conveying the concrete to the elevation positions of all layers, and the free falling height of the concrete is not more than 1m to prevent the concrete from being separated.
In the concrete pouring process, the inner side wall body formwork and the square steel reinforcing system, and the outer side wall body formwork and the square steel reinforcing system can generate elastic deformation and inelastic deformation, and the checking and the adjustment must be carried out in time according to the concrete pouring height.
The concrete of the pool wall is poured in layers, the height of each layer is 500mm, and the record is immediately adjusted after the concrete is poured for two layers and the wall template is checked once for 1000 mm.
It should be understood that parts of the specification not set forth in detail are well within the prior art. The foregoing description of the preferred embodiments is in some detail, and should not be construed as limiting the scope of the invention.
Claims (5)
1. A construction method of a pool wall of a towing pool is characterized by comprising the following steps:
1) paying-off positioning
Firstly, a wall body sideline is formed, after the raft construction is finished, a total station, a theodolite and a GPS are used for positioning corner points of the wall body and lofting the sideline, after the wall body sideline is formed in an elastic mode, a steel ruler is used for forming a construction control line in an elastic mode, the construction control line is parallel to the wall sideline, and the distance between the construction control line and the wall sideline is 20-50 cm;
2) positioning angle iron installation
The positioning angle iron is accurately fixed on the vertical ribs of the pool wall through the side line of the wall body and the construction control line, and the outer vertical surface of the positioning angle iron is superposed and vertical to the side line of the wall body and can be attached to the wall body template; the positioning angle iron is fixed on the wall vertical rib by welding, and is fixed by welding short steel bars, the angle and the height of the positioning angle iron are adjusted at any time, and the vertical surface of the positioning angle iron can be tightly attached to the wall template;
3) erecting full scaffold
A full-hall supporting scaffold is erected in the water pool and used for supporting the wall formwork, ensuring the net width of the water pool and providing an operation platform; setting up the position of a front upright rod of a full scaffold frame body to perform paying-off positioning pre-arrangement, wherein the root of the upright rod is provided with a fixing measure;
4) wall form mounting and fixing
The wall body formwork is installed in a modularized splicing mode, the wall body formwork is formed by splicing a plurality of wall body formwork modules, the splicing seams among the wall body modules are controlled within 2mm, and if the deformation of the plate cannot reach 2mm, edge planing or sealing adhesive tapes are adopted for processing; the vertical abutted seams among the wall template modules are fixed by adopting battens or steel-clad wood across seams, the battens or the steel-clad wood have the same size as the secondary keels and are fixed by adopting iron nails, the nail distance is controlled to be 250mm, and the transverse abutted seams are fully adhered with sealing tapes to prevent slurry leakage; after the wall formwork is assembled, the flatness of the joint needs to be checked to ensure that the requirements are met; the wall body modules need to be pre-assembled before being hoisted, and can be formally assembled after pre-judging that the assembly is correct;
firstly, mounting and fixing an inner wall formwork, splicing the inner wall formwork according to the mounting method of the wall formwork, and checking the flatness of splicing seams to ensure that the requirements are met; after the inner wall formwork is spliced, installing and fixing the through-wall split water-stop bolt and the main keel and the secondary keel of the inner wall formwork; the main keel and the secondary keel of the wall form adopt square steel reinforcing systems with high rigidity and good binding surfaces, the wall thickness of the square steel is not less than 2mm, and the requirement of the lateral pressure of the wall concrete is ensured to be met through strength checking calculation; the secondary keel of the inner wall formwork is long up and down, if the secondary keel cannot be long, the secondary keel is overlapped, and the overlapping distance is not less than 1.2 m; when the main keel is made in a customized mode, a matched joint is needed, and when the main keel is made of two common square steel keels, joints of an upper keel and a lower keel are staggered by 2 m; after the main keel and the secondary keel of the inner wall template are installed, the inner wall template is subjected to preliminary verification and is effectively and fixedly connected with a full framing scaffold;
the inner wall formwork is qualified in verification and is effectively fixed with a full framing scaffold, and then the outer wall formwork is installed and fixed; assembling the outer wall formworks according to the installation method of the wall formworks, checking the flatness of the joints to ensure that the requirements are met, and arranging reserved holes on the outer wall formworks; firstly, correctly inserting the installed through-wall split water-stop bolt into a reserved hole of an outer wall template, installing a main keel and an auxiliary keel of the outer wall template after the insertion is finished, wherein the main keel and the auxiliary keel of the wall template adopt square steel reinforcing systems with higher rigidity and better binding surfaces, the wall thickness of the square steel is not less than 2mm, and the requirement on the lateral pressure of wall concrete is ensured to be met through strength checking calculation; performing preliminary verification after the main keel and the secondary keel of the outer wall template are installed and fixed; after the outer wall template is fixed in place, a jackscrew is supported on the side wall of the foundation pit by matching with a steel pipe to prevent the template from expanding, and the vertex of the jackscrew is preferably positioned on the main keel of the outer wall template and cannot be jacked on the secondary keel;
5) wall form verification
After the inner wall template and the outer wall template are completely installed and fixed and preliminarily verified, verifying the whole wall template; the method for hanging the steel strands on the wall body in a penetrating manner is adopted, namely, three horizontal steel strands which are long in a penetrating manner are hung on the same vertical line along the height direction of each wall body according to a construction control line, and a plumb hammer is matched for assisting in checking; before checking, checking the horizontal lines to ensure that the three horizontal lines are in the same vertical plane; the checking process generates written records, and the point with overlarge deviation is regulated and then is rechecked;
6) pouring concrete
Symmetrically pouring concrete on the wall of the pool, wherein the pouring height difference of the symmetrical wall is not more than 500 mm; the casting speed is controlled to be 20m per hour3-30m3And the concrete of the next layer is poured before the initial setting of the concrete of the next layer, so that cold joints cannot be generated; in the pouring process, the sleeves are used for conveying the concrete to the elevation positions of all layers, and the height of the free falling body of the concrete cannot exceed 1 m;
the inner side wall template and the square steel reinforcement system, and the outer side wall template and the square steel reinforcement system need to be checked and adjusted in time according to the concrete pouring height in the concrete pouring process;
the concrete of the pool wall is poured in layers, the height of each layer is 500mm, and the record is immediately adjusted after the concrete is poured for two layers and the wall template is checked once for 1000 mm.
2. The method of claim 1, wherein the angle iron is selectively galvanized in a moisture-sensitive environment during the step of installing the angle iron.
3. The construction method of the pool wall of the towing pool according to claim 1, wherein in the step of building the full framing scaffold, the fixing measures are to pre-embed steel bars during concrete pouring of raft plates or to add expansion bolts at a later stage.
4. The method as claimed in claim 1, wherein the main and sub-joists of the inner wall form are fixedly connected to the full framing scaffold by positive and negative tension rods or other hinges.
5. The method of claim 1, wherein the wall form is a wall form having a diameter of 0.5-0.7mm and a tension of 25kg-30 kg.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319862A (en) * | 2022-01-14 | 2022-04-12 | 福建新纪建设集团有限公司 | Fixed template structure of pouring frame for construction engineering construction |
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