CN115162731A - Pool construction method based on prestress engineering - Google Patents
Pool construction method based on prestress engineering Download PDFInfo
- Publication number
- CN115162731A CN115162731A CN202210680165.2A CN202210680165A CN115162731A CN 115162731 A CN115162731 A CN 115162731A CN 202210680165 A CN202210680165 A CN 202210680165A CN 115162731 A CN115162731 A CN 115162731A
- Authority
- CN
- China
- Prior art keywords
- slow
- bonding
- pool
- concrete
- pool wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 57
- 210000002435 tendon Anatomy 0.000 claims abstract description 88
- 239000004567 concrete Substances 0.000 claims abstract description 70
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 238000004873 anchoring Methods 0.000 claims abstract description 35
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 15
- 238000013461 design Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000004593 Epoxy Substances 0.000 claims description 19
- 239000000853 adhesive Substances 0.000 claims description 19
- 230000001070 adhesive effect Effects 0.000 claims description 19
- 230000009471 action Effects 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 11
- 230000007547 defect Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000009435 building construction Methods 0.000 abstract description 2
- 239000011440 grout Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 41
- 230000003014 reinforcing effect Effects 0.000 description 14
- 238000012360 testing method Methods 0.000 description 11
- 238000007789 sealing Methods 0.000 description 10
- 238000009415 formwork Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000003111 delayed effect Effects 0.000 description 6
- 230000015271 coagulation Effects 0.000 description 4
- 238000005345 coagulation Methods 0.000 description 4
- 239000004587 polysulfide sealant Substances 0.000 description 4
- 239000011513 prestressed concrete Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000002285 radioactive effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 244000007853 Sarothamnus scoparius Species 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E04G21/12—Mounting of reinforcing inserts; Prestressing
-
- 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
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
-
- 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
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
- E04H7/20—Prestressed constructions
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
The application relates to the technical field of building construction, in particular to a pool construction method based on a prestress project, which comprises the following steps: s1, binding and positioning reinforcing steel bars on the pool wall; s2, laying the slow-bonding prestressed tendons: laying slow-bonding prestressed tendons in the tank wall steel bars according to design requirements; s3, installing a pool wall pouring template; s4, pouring concrete on the pool wall; s5, cleaning the tensioning end of the slow bonding prestressed tendon at the anchoring rib; s6, stretching the slow bonding prestressed tendons; s7, slowly bonding the prestressed tendon tensioning end seal anchor; this application can effectively avoid having the shortcoming that bonding prestressing force construction technology is complicated, the grout quality is difficult to guarantee, also absorbs the advantage that unbonded prestressing force construction process flow is few, the progress is fast simultaneously, can't bond as an organic whole defect with the concrete in the construction of improvement unbonded prestressing force.
Description
Technical Field
The application relates to the technical field of building construction, in particular to a pool construction method based on prestress engineering.
Background
The large biological pond, the secondary sedimentation pond and the primary sedimentation pond are generally constructed in a large sewage treatment plant, the shape of the pond is preferably circular in cross section, and the diameter of some ponds needs to reach 60m, and the height of some ponds is more than 7 m. Traditional mode is when designing circular pond structure, and vertical design generally adopts ordinary reinforced concrete can satisfy the atress requirement, and when the level design, often because the diameter of pond is too big, the change of the difference in temperature and the difference in temperature in season all can arouse the pond to produce very big circumference and expand stress to, when the pond was irritated liquid, liquid also can exert huge circumferential radioactivity effort to the pond, and the pond has cracked risk. In order to ensure the structural strength of the pool, it is necessary to apply a circumferential hoop prestress to the pool after the pool is poured so as to offset the circumferential radioactive force or circumferential expansion stress to which the pool is subsequently subjected. The construction method is commonly used in two ways, which are respectively: construction with adhesive prestress and construction without adhesive prestress.
The construction with bonding prestress refers to prestressed concrete in which the prestressed steel strand is completely bonded and wrapped by surrounding concrete or cement paste. The pre-tensioned prestressed concrete and the post-tensioned prestressed concrete with pre-set pore canals for penetrating and grouting belong to the category.
The unbonded prestressed construction refers to prestressed concrete which is free in stretching and deformation and does not bond with surrounding concrete or cement slurry, the unbonded prestressed steel strand is coated with grease in the whole length and is sheathed with a plastic pipe for protection. And after the concrete pouring forming strength reaches 70%, tensioning the steel strand to enable the pool wall to be prestressed by the inner hoop.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the construction technology with the bonding prestress is complex in construction, and the grouting quality is difficult to ensure; and the construction of unbonded prestress ensures that the steel strand and the concrete are finally unbonded into a whole, and the integral strength of the pool wall is weaker.
Disclosure of Invention
In order to effectively avoid the defects that the construction technology of the bonding prestress is complex and the grouting quality is difficult to guarantee, and meanwhile, the advantages of few process flows and high progress of the non-bonding prestress construction are also absorbed, and the defect that the steel strand cannot be bonded with concrete into a whole in the non-bonding prestress construction is overcome, the application provides the pool construction method based on the prestress engineering.
A pool construction method based on a prestress engineering adopts the following technical scheme:
a pool construction method based on a prestress project comprises the following steps:
s1, binding and positioning reinforcing steel bars on the pool wall;
s2, laying the slow-bonding prestressed tendons: laying slow-bonding prestressed tendons in the interior of the pool wall steel bars according to design requirements;
s3, installing a pool wall pouring template;
s4, pouring pool wall concrete;
s5, cleaning the tensioning end of the slow bonding prestressed tendon at the anchoring rib;
s6, stretching the slow bonding prestressed tendons;
and S7, slowly bonding the prestressed tendon tensioning end seal anchor.
By adopting the technical scheme, construction is completely carried out according to the unbonded prestressed construction process in the construction stage, and the slowly-bonded prestressed tendon structure does not need to reserve a pore channel and grouting the pore channel. Before the slow bonding prestressed tendon is stretched, the construction is the same as that of non-bonding prestressed construction, no bonding force exists between the high-strength prestressed steel strand and the epoxy slow-bonding adhesive, and the high-strength prestressed steel strand, the epoxy slow-bonding adhesive and pool wall concrete are bonded into a whole along with the gradual hardening of the epoxy slow-bonding adhesive in the later period, so that the effect of bonding prestressed construction is finally formed, and the prestress effect of bonding prestressed construction can be exerted in the use stage of slow bonding prestressed construction. The construction method has the advantages that the defects that the construction technology with the bonding prestress is complex and the grouting quality is difficult to guarantee are overcome, the advantages of few technological processes and high progress of the construction technology with the bonding prestress are absorbed, and the defect that the steel strand cannot be bonded with concrete into a whole in the construction process with the bonding prestress can be overcome.
Optionally, the slow-bonding prestressed tendons comprise high-strength prestressed steel strands, epoxy slow-setting adhesive glue and plastic sleeves, the plastic sleeves wrap the high-strength prestressed steel strands, and the epoxy slow-setting adhesive glue is filled in gaps between the high-strength prestressed steel strands and the plastic sleeves; in step S2, the two ends of the slow bonded prestressed tendons are tensioning ends, and the tensioning ends are exposed high-strength prestressed steel strands from which the epoxy slow-setting adhesive and the plastic sleeves are removed.
By adopting the technical scheme, after the pool wall concrete reaches the strength which allows the stretching of the slow bonding prestressed tendon, the plastic sleeve is bonded with the pool wall concrete into a whole, the epoxy slow-setting adhesive has lubricity, and the stretching equipment stretches the slow bonding prestressed tendon by pulling the exposed high-strength prestressed steel strand, so that the circumferential tightening prestress can be applied to the pool to offset the circumferential radioactive acting force or circumferential expansion stress applied to the pool in the subsequent process; along with the gradual hardening of the epoxy delayed coagulation adhesive, the high-strength prestressed steel strand, the epoxy delayed coagulation adhesive and the pool wall concrete are bonded into a whole, and finally, the effect of bonding prestress construction is formed, and the prestress effect of the bonding prestress construction can be exerted in the use stage of the delayed bonding prestress construction.
Optionally, in step S3, it is required to check that the installation of the pool wall reinforcing steel bars, the slow bonding prestressed tendons and the pool wall pouring template should meet the design requirements.
Through adopting above-mentioned technical scheme, it is indispensable step to inspect whether the installation of pool wall reinforcing bar, slow bonding prestressing tendons and pool wall pouring template accords with the designing requirement, and whether the installation through inspecting pool wall reinforcing bar, slow bonding prestressing tendons and pool wall pouring template accords with the designing requirement, can ensure the installation stability that pool wall reinforcing bar, slow bonding prestressing tendons and pool wall pouring template, can ensure that the quality that follow-up pool wall was poured reaches stable reliability.
Optionally, in step S4, covering and watering are added after the concrete pouring for curing, and the concrete is kept moist for not less than 14 days.
By adopting the technical scheme, the maintenance work of the newly cast concrete is well done, and the method is one of important links for ensuring the concrete strength and preventing and controlling the generation of cracks. Neglecting the watering curing of concrete, on one hand, the strength of concrete is reduced, and on the other hand, the concrete is not ready to be supplemented with water in the hardening process, so that a large amount of water is deficient and cracks are generated. Therefore, the concrete is well cured by sprinkling water, so that the cracks generated by the concrete due to temperature change can be reduced, and the cracks generated by the solidification shrinkage of the concrete can also be reduced.
Optionally, in step S2, in the vertical direction of the pool wall, the anchoring positions of two adjacent upper and lower slow bonding prestressed tendons should be staggered by one anchoring rib.
Through adopting above-mentioned technical scheme, if the anchor position homogeneous distribution of two adjacent slow bonding prestressing tendons about the upper and lower is in the position of a certain anchor rib, will lead to this anchor rib to bear great stress, and the stress that other anchor ribs bore is less, leads to each anchor rib atress uneven, and then leads to whole pool wall internal stress uneven, and there is cracked risk in the pool wall. In the vertical direction of the pool wall, the anchoring positions of two adjacent slow-bonding prestressed tendons are staggered by one anchoring rib, so that the anchoring positions of the two adjacent slow-bonding prestressed tendons can be uniformly distributed on each anchoring rib, and the internal stress of the whole pool wall is uniform.
Optionally, in step S6, when the length of the slow bonded prestressed tendon is less than 25 meters, one end of the slow bonded prestressed tendon is tensioned and anchored; when the length of the slow bonding prestressed tendon is between 25 and 50 meters, two ends are adopted for tensioning and anchoring; when the length of the slow bonding prestressed tendon is more than 50 meters, sectional tensioning and anchoring are adopted.
By adopting the technical scheme, different tensioning modes are selected according to the length of the slow bonding prestressed tendon, so that reasonable tensioning can be performed on the slow bonding prestressed tendon, the stress of the slow bonding prestressed tendon is good, and the tensioning process can be efficiently performed.
Optionally, in step S6, when the tensioning device is installed, for the straight-line segment slow-bonded prestressed tendon, the action line of the tensioning force is coincided with the central line of the slow-bonded prestressed tendon, and for the curved-line segment slow-bonded prestressed tendon, the action line of the tensioning force is coincided with the tail end of the central line of the slow-bonded prestressed tendon.
By adopting the technical scheme, when the tensioning equipment is used for tensioning the slow bonding prestressed tendon, the stress direction of the slow bonding prestressed tendon can be parallel to the central line of the slow bonding prestressed tendon or the central line of the end of the slow bonding prestressed tendon, the application of bad internal force to the pool wall concrete can be reduced, and meanwhile, the smooth operation of the tensioning process is facilitated.
Optionally, in step S7, the strength grade of the anchored-sealing concrete is not lower than that of the corresponding anchoring rib structure concrete, and the strength grade of the anchored-sealing concrete is not lower than C40.
Through adopting above-mentioned technical scheme, because the pulling force after anchor tackle bears slow bonding prestressed tendon stretch-draw, the anchor tackle transmits the atress for the anchoring rib, and the anchoring rib atress is great, consequently seals anchor concrete strength grade and must not be less than corresponding anchoring rib structure concrete strength grade, and seals anchor concrete strength grade and must not be less than C40, just can guarantee anchoring rib structure's permanent stability.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the construction of the slow bonding prestress avoids the defects that the construction technology of the bonding prestress is complex and the grouting quality is difficult to ensure, simultaneously absorbs the advantages of less technological process and fast progress of the construction technology of the non-bonding prestress, and can overcome the defect that the steel strand cannot be bonded with the concrete into a whole in the construction of the non-bonding prestress;
2. in the vertical direction of the pool wall, the anchoring positions of two adjacent slow-bonding prestressed tendons are staggered by one anchoring rib, so that the anchoring positions of the two adjacent slow-bonding prestressed tendons are uniformly distributed on each anchoring rib, and the internal stress of the whole pool wall is uniform;
3. the epoxy slow-setting adhesive has lubricating property, and the stretching equipment stretches the slow-setting prestressed tendon by pulling the exposed high-strength prestressed steel strand, and can apply circumferential hoop prestress on the water pool so as to counteract the subsequent circumferential radioactive acting force or circumferential expansion stress on the water pool; along with the gradual hardening of the epoxy delayed coagulation adhesive, the high-strength prestressed steel strand, the epoxy delayed coagulation adhesive and the pool wall concrete are bonded into a whole, and finally, the effect of bonding prestress construction is formed, and the prestress effect of the bonding prestress construction can be exerted in the use stage of the delayed bonding prestress construction.
Drawings
FIG. 1 is a schematic structural diagram of a pool based on a pre-stress project according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a pool wall reinforcing steel bar and a slow bonded prestressed tendon according to an embodiment of the present application;
fig. 3 is a layer-by-layer cutaway view of a slow bonded tendon according to an embodiment of the present application.
Description of the reference numerals: 1. reinforcing steel bars of the pool wall; 2. slowly bonding the prestressed tendons; 3. high-strength prestressed steel strands; 4. epoxy slow-setting adhesive glue; 5. a plastic sleeve; 6. an anchoring rib.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses a pool construction method based on a prestress project, which comprises the following steps:
s1, measuring and setting out on a construction site according to the design requirements of a water pool.
And S2, excavating the earth according to the measurement paying-off.
And S3, constructing a pool foundation cushion layer.
And S4, binding the reinforcing steel bars of the bottom plate of the water pool and supporting a formwork.
And S5, pouring concrete on the bottom plate of the water pool. Pumping and pouring bottom plate concrete, starting pouring from the center of a pool, and annularly pouring from inside to outside, wherein the concrete needs to be vibrated in place during pouring, so that cold seams are prevented; welding elevation control ribs on the upper surface of the reinforcing mesh sheet to control the elevation of concrete at the bottom of the pool, and adopting 5mm multiplied by 5mm wire netting to separate the junction of the reinforcing band and the concrete at other parts in the pouring process so as to ensure the size regulation of the concrete of the reinforcing band; the concrete is poured to the reinforcing belt, the concrete which meets the requirements of the reinforcing belt needs to be replaced in time, the reinforced vibration is needed to be enhanced at the junction of the reinforcing belt and the non-reinforcing belt concrete so as to be beneficial to the combination of the concrete, and the concrete is maintained in time after being poured.
S6, referring to fig. 1 and 2, the pool wall steel bars 1 are bound and positioned. The ann shines pond design requirement ligature pool wall reinforcing bar 1 and is fixed, and the vertical muscle of pool wall reinforcing bar 1 and the vertical muscle welded fastening of pond bottom plate, in this embodiment, the pond design has the anchor rib of four circumference equipartitions.
And S7, referring to the figures 2 and 3, laying the slow bonding prestressed tendons 2. Paving slowly-bonded prestressed tendons 2 in the tank wall steel bars 1 layer by layer in equal height according to the design requirements of the tank from low to high; in the vertical direction of the pool wall, the anchoring positions of two adjacent slow bonding prestressed tendons 2 from top to bottom should be staggered by one anchoring rib.
The slow-bonding prestressed tendon 2 comprises a high-strength prestressed steel strand 3, epoxy slow-bonding adhesive 4 and a plastic sleeve 5, wherein the plastic sleeve 5 wraps the high-strength prestressed steel strand 3, and the epoxy slow-bonding adhesive 4 is filled in a gap between the high-strength prestressed steel strand 3 and the plastic sleeve 5; the two ends of the slow bonding prestressed tendon 2 are tensioning ends, and the tensioning ends are exposed high-strength prestressed steel strands 3 without epoxy slow setting adhesive 4 and plastic sleeves 5.
And S8, installing a pool wall pouring template. When the pool wall formwork is supported, the pool wall pouring formwork is supported by a film-covered bamboo splint, the size of the pool wall pouring formwork is 1.22m multiplied by 2.44m, the splicing position of the pool wall pouring formwork adopts 50 multiplied by 100 wood square back nails, and a pool wall pouring formwork supporting system adopts phi 48 steel pipes to build double-row scaffolds; the double-row scaffold is supported on a phi 22 steel bar ring embedded in the bottom plate of the pool in advance by adopting a steel pipe inclined strut, and the steel pipes used by the double-row scaffold and the steel pipes used for reinforcing the pool wall pouring template are bent in advance according to the radian of the pool wall so as to ensure that the surface radian of the pool wall pouring template is smooth; horizontally installing the pool wall pouring template in the length direction, wherein the rigidity in the length direction is relatively small, so that the surface radian of the template can be conveniently controlled, and after the single-side pool wall pouring template is installed, the radian of the template needs to be rechecked, and the verticality meets the requirements, then binding the reinforcing steel bars 1 of the pool wall and installing the other-side pool wall pouring template; the cup mouth where the pool wall and the pool bottom plate are connected is small in operation surface, the pool wall part inside the cup mouth is erected by a pool wall pouring template with the height of 200mm, the whole pool wall pouring template is erected after the pool wall goes out of the cup mouth so as to facilitate the dismantling of the pool wall pouring template, the pool wall pouring template is prevented from being damaged, fine sand is filled in the cup mouth and outside the pool wall pouring template so as to prevent the bottom of the pool wall pouring template from leaking slurry when concrete is poured, and the fine sand is removed after the concrete is poured, and then the pool wall pouring template is dismantled; the pouring formworks of the inner and outer tank walls of the tank wall are oppositely pulled by M12 water stop type split bolts, 50X 50 water stop sheets are welded in the middle of the split bolts, phi 40X 20 plastic gaskets are placed at two ends of the split bolts, the plastic gaskets are removed after concrete is formed, and waterproof mortar is adopted for leveling after exposed bolts are cut off. The installation of the pool wall reinforcing steel bars 1, the slow bonding prestressed tendons 2 and the pool wall pouring template needs to be checked to meet the design requirements.
And S9, pouring concrete on the pool wall. When concrete of the pool wall is poured, pumping concrete is adopted for continuous supply, and small-particle-size stones are selected from the concrete to prevent the cement paste and the stones from being separated due to dense reinforcing steel bars in the pool wall; a vibrating rod is inserted into the lower layer concrete for 500mm at the junction of the two blanking layers to vibrate so as to be beneficial to concrete combination, and the vibration needs to be enhanced at the position where the reinforcing steel bars are dense; the vibrating rod needs to be inserted into the middle position of the thickness of the pool wall, and the vibrating rod is strictly prohibited from contacting with the pool wall reinforcing steel bars 1, the slow bonding prestressed tendons 2, the pool wall pouring template and the screw rod when the concrete is vibrated. Covering and watering after the concrete on the pool wall is poured, and maintaining for not less than 14 days.
And S10, referring to the figures 1 and 2, cleaning the tensioning end of the slow bonding prestressed tendon 2 at the anchoring rib, and cleaning concrete debris adhered to the surface of the high-strength prestressed steel strand 3.
And S11, with reference to the figures 1 and 2, tensioning the slow bonding prestressed tendons 2. The anchorage device adopts a steel wire bundle upset head anchorage device and a steel strand combined anchorage device.
When the length of the slow bonding prestressed tendon 2 is less than 25 m, one end is adopted for tensioning and anchoring; when the length of the slow bonding prestressed tendon 2 is between 25 and 50 meters, two ends are adopted for tensioning and anchoring; when the length of the slow bonding prestressed tendon 2 is more than 50 meters, sectional tensioning and anchoring are adopted.
When the tensioning equipment is installed, for the straight-line segment slow bonding prestressed tendon 2, the action line of the tensioning force is coincided with the central line of the slow bonding prestressed tendon 2, and for the curve segment slow bonding prestressed tendon 2, the action line of the tensioning force is coincided with the tail end of the central line of the slow bonding prestressed tendon 2.
Before tensioning, measuring the resistance of each hole, checking and debugging tensioning equipment, and performing tensioning operation after the strength of the pool wall concrete reaches the designed strength; after the slow-bonding prestressed tendons 2 are tensioned, cutting equipment is used for cutting off the excessive length of the exposed slow-bonding prestressed tendons 2, the length of the anchor clamping pieces exposed after the slow-bonding prestressed tendons 2 are cut is not less than 30mm, the surfaces of the pool wall anchoring ribs are chiseled and cleaned, then waterproof paint is coated on the surfaces of the anchor and the bearing plate, the tensioned anchor is sealed by C40 micro-expansion concrete and immediately maintained, and the anchor area end enclosure concrete cannot contain oxides.
S12, referring to the figures 1 and 2, slowly bonding the prestressed tendon 2 to stretch and draw the end to seal the anchor. The strength grade of the seal anchor concrete is not lower than that of the corresponding anchor rib structure concrete, and the strength grade of the seal anchor concrete is not lower than C40.
And S13, performing waterproof sealing treatment on the rim of the bottom plate of the water pool. After the tension of the slow-bonding prestressed tendon 2 is finished, the cup mouth of the pool bottom plate can be subjected to sealing and waterproof treatment, a blower and a broom are required to be used for cleaning the interior of the cup mouth of the pool bottom plate before the sealing and waterproof treatment, polysulfide sealant is adopted for filling treatment to seal and waterproof during the sealing and waterproof treatment of the cup mouth of the pool bottom plate, and a filling sealing and waterproof treatment height control line is arranged on the pool wall; when the polysulfide sealant is poured, the polysulfide sealant is poured from one point to two sides in a radiation ring direction, and the pouring is finished at one time; need use minor diameter reinforcing bar instrument to vibrate when pouring into the interface between pond bottom plate rim of a cup and the pool wall and corner position between them in order to guarantee to pour closely, after polysulfide sealant drying solidification, can carry out upper portion concrete seal construction.
And S14, testing the water full of the water tank. After the cup mouth sealing and waterproofing construction is finished, a pool full water test can be started, the reserved hole, the pre-buried pipe orifice and the water inlet and outlet need to be temporarily blocked before the pool full water test, and the water filling gate and the water discharging gate are checked to ensure the anti-leakage performance of the water filling gate and the water discharging gate; the method comprises the steps of arranging a water level observation scale at a pool wall position, selecting a position convenient for observation by a calibrated water level measuring needle, setting observation scales at upward and downward 20cm positions of a three-time water filling test during a water full test, wherein the water level observation scale is 1/3 of the depth of the pool wall, 2/3 of the depth of the pool wall and the designed water full test position respectively, the water level rising speed is not more than 2m/d during the water filling test, the interval time between two adjacent water filling tests is not less than 24 hours, measuring the water level falling value 24 hours after each water filling test, calculating the water seepage amount, considering the natural evaporation amount during calculation of the water seepage amount, hanging half-barrel water filled with a cylindrical barrel made of stainless steel with galvanized surface at the time of evaporation amount near the water full test pool, and measuring the unit reduction amount of the half-barrel water in 24 hours, namely the evaporation amount.
The implementation principle of the pool construction method based on the prestress engineering in the embodiment of the application is as follows:
s1, measuring and setting out on a construction site according to the design requirements of a water pool.
And S2, excavating the earth according to the measurement paying-off.
And S3, constructing a pool foundation cushion layer.
And S4, binding the reinforcing steel bars of the pool bottom plate and supporting a formwork.
And S5, pouring concrete on the bottom plate of the water pool.
And S6, binding and positioning the reinforcing steel bars 1 on the pool wall.
S7, laying the slow bonding prestressed tendons 2, and laying the slow bonding prestressed tendons 2 in the pool wall steel bars 1 layer by layer in equal height according to the design requirements of the pool.
And S8, installing a pool wall pouring template.
And S9, pouring concrete on the pool wall.
And S10, cleaning the tensioning end of the slow bonding prestressed tendon 2 at the anchoring rib, and cleaning concrete debris adhered to the surface of the high-strength prestressed steel strand 3.
S11, tensioning the slow bonding prestressed tendon 2.
S12, slowly bonding the prestressed tendon 2 and sealing the anchor at the tensioning end.
And S13, performing waterproof sealing treatment on the rim of the bottom plate of the water pool.
And S14, testing the water full of the water tank.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A pool construction method based on a prestress project is characterized in that: the method comprises the following steps:
s1, binding and positioning reinforcing steel bars on the pool wall;
s2, laying the slow-bonding prestressed tendons: paving slow-bonding prestressed tendons (2) in the tank wall steel bars (1) according to design requirements;
s3, installing a pool wall pouring template;
s4, pouring concrete on the pool wall;
s5, cleaning the tensioning end of the slow bonding prestressed tendon at the anchoring rib;
s6, stretching the slow bonding prestressed tendons;
and S7, slowly bonding the prestressed tendon tensioning end seal anchor.
2. The pool construction method based on the prestress engineering as claimed in claim 1, wherein: the slow bonding prestressed tendon (2) comprises a high-strength prestressed steel strand (3), epoxy slow bonding glue (4) and a plastic sleeve (5), the high-strength prestressed steel strand (3) is wrapped by the plastic sleeve (5), and the epoxy slow bonding glue (4) is filled in a gap between the high-strength prestressed steel strand (3) and the plastic sleeve (5); in the step S2, two ends of the slow bonding prestressed tendon (2) are tensioning ends, and the tensioning ends are exposed high-strength prestressed steel strands (3) without epoxy slow setting adhesive glue (4) and plastic sleeves (5).
3. The pool construction method based on the prestress engineering according to claim 1, wherein: in the step S3, the installation of the pool wall reinforcing steel bars (1), the slow bonding prestressed tendons (2) and the pool wall pouring template is required to be checked to meet the design requirements.
4. The pool construction method based on the prestress engineering according to claim 1, wherein: in step S4, covering and watering are carried out for curing after concrete pouring, and the concrete is kept moist for not less than 14 days.
5. The pool construction method based on the prestress engineering according to claim 1, wherein: in the step S2, in the vertical direction of the pool wall, the anchoring positions of two adjacent slow bonding prestressed tendons (2) are staggered by one anchoring rib.
6. The pool construction method based on the prestress engineering according to claim 1, wherein: in the step S6, when the length of the slow bonding prestressed tendon (2) is less than 25 meters, one end is adopted for tensioning and anchoring; when the length of the slow-bonding prestressed tendon (2) is between 25 and 50 meters, two ends are adopted for tensioning and anchoring; when the length of the slow bonding prestressed tendon (2) is more than 50 meters, sectional tensioning and anchoring are adopted.
7. The pool construction method based on the prestress engineering according to claim 1, wherein: in the step S6, when the tensioning equipment is installed, for the straight-line section slow bonding prestressed tendon (2), the action line of the tensioning force is coincided with the central line of the slow bonding prestressed tendon (2), and for the curve section slow bonding prestressed tendon (2), the action line of the tensioning force is coincided with the tail end of the central line of the slow bonding prestressed tendon (2).
8. The pool construction method based on the prestress engineering according to claim 1, wherein: in step S7, the strength grade of the seal-anchored concrete is not lower than that of the corresponding anchoring rib structure, and the strength grade of the seal-anchored concrete is not lower than C40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210680165.2A CN115162731A (en) | 2022-06-16 | 2022-06-16 | Pool construction method based on prestress engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210680165.2A CN115162731A (en) | 2022-06-16 | 2022-06-16 | Pool construction method based on prestress engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115162731A true CN115162731A (en) | 2022-10-11 |
Family
ID=83484602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210680165.2A Pending CN115162731A (en) | 2022-06-16 | 2022-06-16 | Pool construction method based on prestress engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115162731A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0762926A (en) * | 1993-08-21 | 1995-03-07 | Abe Kogyosho:Kk | Cylindrical prestressed concrete tank and molding of tank thereof |
| CN2563216Y (en) * | 2002-07-18 | 2003-07-30 | 冶金工业部建筑研究总院 | Slow adhesive prestress rib |
| JP2006291582A (en) * | 2005-04-12 | 2006-10-26 | Ps Mitsubishi Construction Co Ltd | Construction method for large-sized tubular concrete structure |
| CN204738453U (en) * | 2015-05-21 | 2015-11-04 | 天津德嘉预应力钢绞线有限公司 | Prestress wire slowly bonds |
| CN112663774A (en) * | 2021-01-18 | 2021-04-16 | 中铁八局集团有限公司 | Construction method of unbonded prestressed large-diameter reinforced concrete thin-wall circular water tank |
| CN213927094U (en) * | 2020-11-17 | 2021-08-10 | 广东省建筑设计研究院有限公司 | A slowly bond wisdom steel strand wires for building prestressed concrete structure |
| CN114059791A (en) * | 2021-11-12 | 2022-02-18 | 中国电建集团华东勘测设计研究院有限公司 | Method for reinforcing and heightening circular structure pool by prestressed concrete technology |
| CN114232614A (en) * | 2022-01-31 | 2022-03-25 | 中铁六局集团广州工程有限公司 | Anti-floating pile construction method based on slow-bonding prestressed steel strand |
-
2022
- 2022-06-16 CN CN202210680165.2A patent/CN115162731A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0762926A (en) * | 1993-08-21 | 1995-03-07 | Abe Kogyosho:Kk | Cylindrical prestressed concrete tank and molding of tank thereof |
| CN2563216Y (en) * | 2002-07-18 | 2003-07-30 | 冶金工业部建筑研究总院 | Slow adhesive prestress rib |
| JP2006291582A (en) * | 2005-04-12 | 2006-10-26 | Ps Mitsubishi Construction Co Ltd | Construction method for large-sized tubular concrete structure |
| CN204738453U (en) * | 2015-05-21 | 2015-11-04 | 天津德嘉预应力钢绞线有限公司 | Prestress wire slowly bonds |
| CN213927094U (en) * | 2020-11-17 | 2021-08-10 | 广东省建筑设计研究院有限公司 | A slowly bond wisdom steel strand wires for building prestressed concrete structure |
| CN112663774A (en) * | 2021-01-18 | 2021-04-16 | 中铁八局集团有限公司 | Construction method of unbonded prestressed large-diameter reinforced concrete thin-wall circular water tank |
| CN114059791A (en) * | 2021-11-12 | 2022-02-18 | 中国电建集团华东勘测设计研究院有限公司 | Method for reinforcing and heightening circular structure pool by prestressed concrete technology |
| CN114232614A (en) * | 2022-01-31 | 2022-03-25 | 中铁六局集团广州工程有限公司 | Anti-floating pile construction method based on slow-bonding prestressed steel strand |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102031784B (en) | Slope protection pile pouring and cable bolting construction method for deep foundation pit | |
| CN103821364B (en) | The construction method of reinforced concrete water pond | |
| CN112663774B (en) | Construction method of unbonded prestressed large-diameter reinforced concrete thin-wall circular water tank | |
| CN112982181B (en) | Construction method for steel-concrete combined section of through-type steel box continuous arch bridge | |
| CN104790302B (en) | A kind of high pier continuous rigid frame bridge end bay straightway Hanging Basket coordinates bent cap support integral construction method | |
| CN109281250B (en) | Arch ring linearity and prestress control construction method for deck type external cable multi-arch bridge | |
| US20220380996A1 (en) | Methods for constructing tensionless concrete pier foundations and foundations constructed thereby | |
| CN107090777A (en) | A kind of T beam manufacture methods for reducing blibbing | |
| CN103806659B (en) | Super thick prestressing force change-over panel individual layer comprehensively supports and splits temperature control construction technology with control | |
| CN110552370A (en) | Reverse construction method based annular lining wall integral single-side formwork construction method | |
| CN112502041A (en) | Method for crossing karst cavity by cast-in-situ box girder in karst tunnel | |
| CN110241842A (en) | Jump storehouse top and bottom process construction method in a kind of cooling tower large-sized annular basis | |
| JP2011080240A (en) | Concrete structure and construction method for the same | |
| CN102296570A (en) | Construction method of large cast-in-place reinforced concrete water inlet channel | |
| BR102017027503A2 (en) | tower cementation construction method | |
| CN109281239B (en) | Rib type abutment taper slope cutting method in road operation state | |
| CN106567554A (en) | Reinforcing construction method of masonry structural building | |
| CN103866982B (en) | A kind of petal art framework construction method | |
| CN104295001B (en) | The construction technology of variable cross-section prestressing force cant beam | |
| CN108360821A (en) | A kind of construction method of beam | |
| CN113530086A (en) | Column steel bar keel and supporting system thereof | |
| CN112227817A (en) | Construction method for casting circular herringbone column of cooling tower in sections | |
| CN115162731A (en) | Pool construction method based on prestress engineering | |
| CN209907694U (en) | Ribbed steel mesh hollow-out cast-in-situ concrete T-shaped section hollow floor structure | |
| CN107586068B (en) | Upright column concrete and construction method of concrete upright column |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gao Fei Inventor after: Du Junwei Inventor after: Kou Yafang Inventor after: Zheng Xi Inventor after: Hu Yazhou Inventor after: Zheng Yongjian Inventor after: Cui Xiaoxuan Inventor after: Zhao Fawei Inventor after: Wang Junnan Inventor after: Ling Zhi Inventor after: Su Pengfei Inventor before: Gao Fei Inventor before: Du Junwei Inventor before: Kou Yafang Inventor before: Zheng Xi Inventor before: Hu Yazhou Inventor before: Zheng Yongjian Inventor before: Cui Xiaoxuan Inventor before: Zhao Fawei Inventor before: Wang Junnan Inventor before: Ling Zhi Inventor before: Su Pengfei |