CN110468790B - Construction process of post-pouring belt of aqueduct body - Google Patents
Construction process of post-pouring belt of aqueduct body Download PDFInfo
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- CN110468790B CN110468790B CN201910856405.8A CN201910856405A CN110468790B CN 110468790 B CN110468790 B CN 110468790B CN 201910856405 A CN201910856405 A CN 201910856405A CN 110468790 B CN110468790 B CN 110468790B
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- 238000000034 method Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 137
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 109
- 239000010959 steel Substances 0.000 claims abstract description 109
- 239000004567 concrete Substances 0.000 claims abstract description 75
- 238000009434 installation Methods 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000004568 cement Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000005498 polishing Methods 0.000 claims abstract description 7
- 238000009966 trimming Methods 0.000 claims abstract description 7
- 230000001680 brushing effect Effects 0.000 claims abstract description 4
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 14
- 239000004570 mortar (masonry) Substances 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 238000007788 roughening Methods 0.000 claims description 7
- 239000000084 colloidal system Substances 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 238000005056 compaction Methods 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
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- 239000004698 Polyethylene Substances 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000002390 adhesive tape Substances 0.000 claims description 3
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- 239000011487 hemp Substances 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
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- 239000004587 polysulfide sealant Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 2
- 238000009417 prefabrication Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 14
- 238000003466 welding Methods 0.000 description 6
- 238000013468 resource allocation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
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- 238000010586 diagram Methods 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
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- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
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- 230000009286 beneficial effect Effects 0.000 description 1
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- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/04—Navigable canals
Abstract
The invention relates to the technical field of aqueduct engineering construction, in particular to a construction process of a post-pouring strip of an aqueduct body, which mainly comprises the following steps: 1. chiseling and cleaning the new and old concrete combined base surfaces; 2. derusting treatment is carried out on the surfaces of the steel bars; 3. draining the post-pouring belt to accumulate water; 4. pre-buried installation positioning steel plates and bolts; 5. installing a post-pouring belt template and an auxiliary bracket; 6. brushing a layer of interfacial agent or plain cement paste before pouring the post-pouring belt; 7. checking and trimming; 8. pouring concrete on the post-pouring belt; 9. performing concrete curing on the post-cast strip; 10. polishing the base surface of the steel plate; 11. a water stop belt is arranged on the inner side of the aqueduct body; 12. a water stop structure is arranged on the outer side of the water stop belt; the invention adopts a prefabrication or pre-buried installation mode to pre-operate the process with higher construction difficulty in advance, lightens the construction burden of the construction process, has compact step connection and efficient process arrangement, and provides a stable and firm construction foundation for integral pouring of the post-cast strip.
Description
Technical Field
The invention relates to the technical field of aqueduct engineering construction, in particular to a construction process of a post-pouring strip of an aqueduct body.
Background
The water resource allocation project in China is a large-scale water resource allocation project for leading water from a reservoir to supply water to urban and rural life, industry and agriculture in appointed areas along the line and solving the drought and water shortage problems in partial areas; the engineering building comprises aqueducts, open channels and the like, wherein the aqueducts are overhead water tanks for conveying channel water to flow across channels, stream valleys, depressions and roads, are commonly used for irrigation water conveying, are also used for flood drainage, sand drainage and the like, and large-scale aqueducts can also be used for navigation; the aqueduct is mainly built by masonry, concrete, reinforced concrete and other materials, and consists of an inlet section, an outlet section, a duct body, a supporting structure, a foundation and the like, wherein the duct body mainly plays a role in water delivery, and the duct body also plays a role in a longitudinal beam for an arch type aqueduct with a beam type and arch structure; the aqueduct is generally formed by sections of multiple spans, the length of the aqueduct is longer, the passing area is more, the span is generally 25-35m, post-cast strips are required to be arranged between the spans, the safety work is very important, and the construction process is a technical process with complex construction procedures and great difficulty, so that a standardized and safety-improving construction method is required to be used in aqueduct construction of water resource allocation engineering, and long-term planning development of the water resource allocation engineering can be facilitated.
Disclosure of Invention
In order to solve the problems, the invention aims to disclose the technical field of aqueduct engineering construction, in particular to a construction process of post-pouring strips of aqueduct bodies.
In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a aqueduct body post-cast strip construction technology, includes two adjacent aqueduct bodies of striding, the adjacent face of two aqueduct bodies is the interior wall, the aqueduct body outwards is the outer wall, post-cast strip sets up as the construction joint between two aqueduct bodies of striding, its characterized in that, construction technology mainly include the step:
firstly, performing basal plane roughening and cleaning at a new and old concrete combined basal plane at the aqueduct body;
secondly, preparing a reinforcing steel bar, a water stop belt and a water stop structure, and applying the reinforcing steel bar, the water stop belt and the water stop structure when the reinforcing steel bar is to be installed, and simultaneously carrying out rust removal treatment on the surface of the reinforcing steel bar;
thirdly, drawing out accumulated water at the post-pouring belt and airing;
fourthly, pre-burying and installing a positioning steel plate and bolts on the combined base surface, wherein the positioning steel plate is marked by positioning lines during positioning;
fifthly, installing a post-pouring belt template and an auxiliary bracket;
sixthly, treating a concrete interface, and brushing a layer of interfacial agent or plain cement slurry before pouring the post-pouring strip so as to prepare for the subsequent pouring of concrete;
seventh, checking the treatment before pouring and trimming unqualified parts;
eighth, pouring concrete into the post-pouring belt;
ninth, curing the concrete of the post-cast strip;
tenth, polishing and trimming the steel plate basal plane on which the positioning steel plate is mounted;
eleventh step, installing a water stop belt on the inner side of the aqueduct body;
and twelfth, installing a water stopping structure on the outer side of the water stopping belt, and then sealing the water stopping groove by adopting acrylic mortar.
Preferably, in the fourth step, the method further includes the step of:
4-1) before the positioning steel plate is installed, marking positioning lines on a combined base surface which is roughened and cleaned;
4-2) pre-positioning the pre-embedded positioning steel plates through two steel bars, wherein the two 20 steel bars are connected with the steel bars of the aqueduct body structure, and the positioning steel plates are arranged on the steel bars so as to fix and position the positioning steel plates on the combined base surface;
4-3) arranging bolt holes on the positioning steel plate to install bolts, wherein the center distance of each bolt hole on the positioning steel plate is 11.5cm from the length of the post-cast strip, and determining the installation position of the water stop belt through the embedded bolts;
4-4) preparing to pour the concrete of the aqueduct body after the bolts, the sleeves, the positioning steel plates and the combined base surface are fixed.
Preferably, in the fifth step, the post-cast strip template comprises a template structure and an auxiliary bracket; the template structure comprises a bottom die, an inner die, an outer die, a panel and a pull rod beam, wherein the U-shaped template is assembled and formed to be matched with the aqueduct body, the U-shaped template consists of the upper part of the U-shaped template and the lower part of the frame-shaped template, the outer die is connected with the bottom die up and down and is arranged as the outer side surfaces of two sides of the template, and the inner die is arranged as the inner side surface of the template; the outer side die and the inner die are spliced into a three-dimensional structure through a panel; wherein the outer side die and the bottom die are respectively provided with two parts which are symmetrically arranged at the two sides of the die plate respectively; the tie bars Liang Dashe are above the two outer dies to support the tie bar beams through the two outer dies; the inner die comprises an inner die side face, an inner die bottom face and an inner die top face, and is installed along the inner side of the panel; the auxiliary support is arranged at the outer die or the inner die at the upper part of the template and comprises a movable back frame, a support, a supporting rod, a pair of pull rods and a jacking.
Preferably, in the fifth step, the post-cast strip template construction further includes the steps of:
5-1) fixedly mounting a bottom die of the post-cast strip, and then assembling the first outer die, the second outer die and the third outer die to form an outer die of the post-cast strip, and connecting and reinforcing the outer die through a truss;
5-2) when the outer die is installed, firstly, sliding or hoisting the outer die in place, aligning the outer die with the relative position of the bottom die, and adjusting the verticality of the outer die by using a top compression bar;
5-3) after the outer side die is installed, fixing firmly by using a connecting mechanism, and installing a counter pull rod;
5-4) the inner mold is assembled in a movable sectional manner through an auxiliary bracket, and when the inner mold sections are assembled, double-sided adhesive tapes are adhered in joints;
5-5) supporting the vertical installation panel, wherein the installation sequence is that the installation is firstly carried out from the bottom die and then from the side die;
5-6) after the whole structure of the post-pouring belt template is installed, concrete pouring is carried out, and the casting is finished at one time according to the cross section structure of the aqueduct body, and a water stopping groove is preset in the post-pouring belt template.
Preferably, in the eighth step, the post-cast strip concrete pouring construction process further includes the steps of:
8-1) adopting C50W8F150 micro-expansive concrete as concrete for pouring a post-pouring belt, and preparing the concrete to be doped with cement and a UEA expanding agent, wherein the content of the UEA expanding agent is 10-15% of the cement consumption, and the error is equal to or lower than 0.5%;
8-2) when the post-cast strip concrete is cast, the casting temperature is less than or equal to 26 ℃ and is more than or equal to 5 ℃;
8-3) mixing the concrete uniformly by a forced mixer after the UEA expanding agent is doped.
Preferably, in the tenth step, the method further includes the step of:
10-1) before the water stop structure is installed and constructed, polishing a steel plate base surface, roughening a concrete combined base surface, washing the concrete by a high-pressure water gun, and uniformly coating a layer of interfacial agent after airing;
10-2) checking whether concrete pouring is compact within the range of the water stop groove, and when the compactness of the concrete is insufficient, timely chiseling loose concrete and pouring steel adhesive for filling compaction.
Preferably, in the eleventh step, the method further includes the step of:
11-1) after the post-cast strip concrete pouring and the concrete curing are completed, the rubber water stop strip is installed after the concrete reaches the strength of 6.5-8.5 days;
11-2) the water stop is a rubber water stop, the base surface of the water stop groove is cleaned by using the plane of the water stop groove before installation, the adhesive surface of the rubber water stop and the positioning steel plate is polished and cleaned by using the plane of the water stop;
11-3) determining the positions of bolt holes on the rubber water stop belt according to the positions of the embedded bolts, wherein the control hole pitch is the same as the hole pitch of the bolts on the steel plate basal plane when the rubber water stop belt is drilled;
11-4) uniformly coating steel structural adhesive on the adhesive surface of the rubber water stop, sequentially installing the rubber water stop from the bottom of the aqueduct body to two sides, and cleaning overflowing colloid after the colloid is fully solidified;
11-5) after the rubber water stop is stuck, mounting a stainless steel nut in place on a steel plate basal plane, and after the bolt is mounted in place, pouring the joint of the bolt and the positioning steel plate with pouring type steel sticking glue for compaction;
11-6) installing a water stopping pressing plate on the surface of the rubber water stopping belt, installing a gasket and a screw cap at the same time, pressing and screwing the rubber water stopping belt until the rubber overflows from two sides after the position is accurately adjusted, and carrying out local repair and cleaning in the water stopping tank after the rubber of the water stopping pressing plate is solidified when the screw cap is more than the screw cap.
Preferably, in the twelfth step, the method further includes the step of:
12-1) the water stopping structure is a galvanized water stopping copper sheet, the water stopping structure of the post-pouring belt is arranged at a position 32cm below the bottom plate of the aqueduct body, and the connecting surface of the water stopping structure is a smooth, hole-free and crack-free surface;
12-2) backfilling the water stop groove with M40 pre-shrinking emulsion mortar layer by layer from the bottom of the aqueduct body to be dense, and performing mortar vibrating and maintenance work;
12-3) adopting spray curing for 24 hours, then adopting water spraying curing, filling asphalt hemp yarns into the water-stopping slot holes after the mortar sealing layer meets the strength requirement, and finally embedding a polyethylene closed-cell foam board and a double-component polysulfide sealant into the parting between the slot bodies.
The beneficial effects of the invention are as follows: the invention overcomes the construction difficulty of the overhead operation of the aqueduct body and the post-pouring belt by providing the aqueduct body post-pouring belt gradual construction process which can be easily constructed, improves the safety protection performance and prevents the occurrence of safety accidents; firstly, the prefabrication or pre-embedding installation mode of the invention pre-operates the process with higher construction difficulty in advance, lightens the construction burden of the construction process, then, the steps of the invention are closely connected, the procedure arrangement is efficient, the complicated construction steps caused by random drawing of the construction steps are avoided, and secondly, the post-cast strip composition part of the invention provides a stable and firm construction foundation for the whole casting of the post-cast strip, so that the invention greatly reduces the manpower, materials, time and construction cost, simultaneously, improves the construction efficiency, and ensures that the construction is smooth in sequence through the steps, and is safe and reliable.
Drawings
Fig. 1 is a construction diagram of a post-cast strip of the present invention.
Fig. 2 is a structural diagram of a post-cast strip installation form of the present invention.
The drawings are marked with the following description: the mold comprises a bottom mold, a 2-inner mold, a 3-outer mold, a 4-panel, a 5-pull rod beam, a 6-upper mold plate, a 7-lower mold plate, a 11-upper inner mold side, a 12-lower inner mold side, a 13-upper inner mold side, a 14-lower inner mold side, a 31-first outer mold, a 32-second outer mold, a 33-third outer mold, a 91-movable back frame, a 92-bracket, a 93-supporting rod, a 94-opposite pull rod and a 95-jacking.
Detailed Description
The following detailed description of specific embodiments of the invention refers to the accompanying drawings:
the embodiment is provided with 4 sections of aqueducts, the 4 sections of aqueducts are 30 m-span, are designed into single-hole beam type prestress rectangular grooves, adopt three-dimensional prestress reinforced concrete simply supported structures, adopt cast-in-situ construction, and have the cross dimension of the single groove: the inner contour is 6.4mX4.9 m (clear width X clear height), the outer contour is 8.6mX7.0-6.5 m, the bottom plate is 0.4m thick, the side wall is 0.5m thick, the empty slot weight is about 1135t, the simple beams are relatively independent, the arrangement and construction are convenient, a post-cast strip is arranged between each two spans, and the width is 2X 0.55m;
preparation work notice before construction: before the post-pouring strip is constructed, firstly roughening the concrete surface of the new and old concrete joint surface, ensuring that a rough joint surface which is more than or equal to 6mm is formed, then washing cleanly, sprinkling water to wet before pouring, avoiding water accumulation, then carrying out a welding process test of the copper water stop sheet, and carrying out the test, reporting, supervising and approving; straightening the steel bar bent during tensioning of the groove body, straightening a zinc-plated steel plate with the thickness of 1mm and the width of 200mm additionally arranged during pouring of the original groove body, cleaning dirt and cement paste on the zinc-plated steel plate by using a steel wire ball or a steel wire brush, and checking whether the hole distance of a stainless steel positioning steel plate is consistent or not and whether the hole diameter is matched with the diameter of a bolt or not;
the embodiment provides a post-pouring strip construction process of an aqueduct body, which comprises two adjacent aqueduct bodies, wherein the adjacent surfaces of the two aqueduct bodies are inner walls, the aqueduct bodies are outer walls outwards, the post-pouring strip is arranged between the two aqueduct bodies to serve as a construction joint, and the construction process mainly comprises the following steps:
firstly, performing basal plane roughening and cleaning at a new and old concrete combined basal plane at the aqueduct body;
secondly, preparing a reinforcing steel bar, a water stop belt and a water stop structure, wherein the reinforcing steel bar is subjected to rust removal treatment on the surface of the reinforcing steel bar when the reinforcing steel bar is to be installed, the water stop structure is a galvanized water stop copper sheet, the water stop structure is straightened, and the water stop belt is a rubber water stop belt;
thirdly, drawing out accumulated water at the post-pouring belt and airing;
fourthly, pre-burying and installing a positioning steel plate and bolts on the combined base surface, wherein the positioning steel plate is marked by positioning lines during positioning;
further, the fourth step further comprises the steps of:
4-1) before the positioning steel plate is installed, marking positioning lines on a combined base surface which is roughened and cleaned; ejecting a positioning line from an ink fountain according to the position 8cm away from the inner wall of the aqueduct body; a stainless steel plate with the thickness of 120mm multiplied by 18mm is used as a positioning steel plate;
4-2) pre-buried positioning steel plates are pre-positioned by taking two 20 steel bars as positioning bars, the two 20 steel bars are connected with the steel bars of the aqueduct body structure, and the positioning steel plates are arranged on the steel bars so as to fix and position the positioning steel plates on a combined base surface, thereby promoting firmness and reliability;
4-3) arranging bolt holes on the positioning steel plate to install bolts, wherein the center distance of each bolt hole on the positioning steel plate is 11.5cm from the length of the post-cast strip, and determining the installation position of the water stop belt through the embedded bolts; the vertical surface verticality and the plane levelness are kept when the positioning steel plate is installed;
4-4) preparing to pour the concrete of the aqueduct body after the bolts, the sleeves and the positioning steel plates are fixed with the combined base surface;
fifthly, installing a post-pouring belt template and an auxiliary bracket;
further, in the fifth step, the post-cast strip template construction further includes the steps of:
5-1) fixedly mounting a bottom die of the post-cast strip, and then assembling the first outer die, the second outer die and the third outer die to form an outer die of the post-cast strip, and connecting and reinforcing the outer die through a truss;
5-2) when the outer die is installed, firstly, sliding or hoisting the outer die in place, aligning the outer die with the relative position of the bottom die, and adjusting the verticality of the outer die by using a top compression bar;
5-3) after the outer side die is installed, fixing firmly by using a connecting mechanism (such as a bolt, a clip and the like), and installing a counter pull rod; after other fasteners are adjusted, the length, width, height, roughness and the like of the whole template are checked, and records are made; not meeting the requirements, and timely adjusting; the outer side die is installed at an accurate position, is tightly connected, is closely adhered to the joint of the bottom die and is free from slurry leakage;
5-4) the inner mold is assembled in a movable sectional manner through an auxiliary bracket, and when the inner mold sections are assembled, double-sided adhesive tapes are adhered in joints; ensuring tight joints of the template and no leakage of slurry, and checking whether the sizes of all parts meet the requirements after the internal mold is installed;
5-5) supporting the vertical installation panel, wherein the installation sequence is that the installation is firstly carried out from the bottom die and then from the side die;
5-6) after the whole structure of the post-pouring belt template is installed, concrete pouring is carried out, and one-time pouring is finished according to the cross section structure of the aqueduct body, and a water stopping groove is preset in the post-pouring belt template; when the post-pouring belt template is supported, the verticality is required to be ensured to be less than 5mm; the flatness of the panel is less than 3mm so as to ensure that the appearance quality of the concrete of the post-cast strip meets the standard requirement, and the special template for the post-cast strip is required to be firmly supported, tightly and firmly, prevents slurry leakage and has good water retention effect;
sixthly, treating a concrete interface, and brushing a layer of interfacial agent or plain cement slurry before pouring the post-pouring strip so as to prepare for the subsequent pouring of concrete;
seventh, checking the treatment before pouring and trimming unqualified parts;
eighth, pouring concrete into the post-pouring belt;
further, in the eighth step, the post-cast strip concrete pouring construction process further includes the steps of:
8-1) adopting C50W8F150 micro-expansive concrete as concrete for pouring a post-pouring belt, and preparing the concrete to be doped with cement and a UEA expanding agent, wherein the content of the UEA expanding agent is 10-15% of the cement consumption, and the error is equal to or lower than 0.5%;
8-2) when the post-cast strip concrete is cast, the casting temperature is less than or equal to 26 ℃ and is more than or equal to 5 ℃;
8-3) uniformly stirring concrete by a forced stirrer after the UEA expanding agent is doped, wherein the stirring time of the concrete doped with the UEA expanding agent is prolonged by 30S compared with that of common concrete, because the post-pouring zone of the aqueduct body is arranged between the upper and the lower two-span duct bodies, the length of two sides is 53cm, and because the bottom plate and the side wall are double-layer bidirectional reinforcing steel bars, the reinforcing steel bars at the post-pouring zone are dense, and the U-shaped rubber water stop strips, the water stop copper sheets and the positioning steel plates are arranged, the internal space is very narrow, the post-pouring zone is complex in treatment, and especially the concrete pouring difficulty is high;
ninth, curing the concrete of the post-cast strip;
tenth, polishing and trimming the steel plate basal plane on which the positioning steel plate is mounted;
further, in the tenth step, the method further includes the steps of:
10-1) before the water stop structure is installed and constructed, polishing a steel plate base surface, roughening a concrete combined base surface, washing the concrete by a high-pressure water gun, and uniformly coating a layer of interfacial agent after airing;
10-2) checking whether concrete pouring is compact within the range of the water stop groove, and when the compactness of the concrete is insufficient, timely chiseling loose concrete and pouring steel adhesive for filling compaction;
eleventh step, installing a water stop belt on the inner side of the aqueduct body;
further, in the eleventh step, the method further includes the steps of:
11-1) after the post-cast strip concrete pouring and the concrete curing are completed, the rubber water stop strip is installed after the concrete reaches the strength of 6.5-8.5 days;
11-2) the water stop is a rubber water stop, the base surface of the water stop groove is cleaned by using the plane of the water stop groove before installation, the adhesive surface of the rubber water stop and the positioning steel plate is polished and cleaned by using the plane of the water stop;
11-3) determining the positions of bolt holes on the rubber water stop belt according to the positions of the embedded bolts, wherein the control hole pitch is the same as the hole pitch of the bolts on the steel plate basal plane when the rubber water stop belt is drilled;
11-4) uniformly coating steel structural adhesive on the adhesive surface of the rubber water stop, wherein the thickness of the adhesive layer is 2-3mm, sequentially installing the rubber water stop from the bottom of the aqueduct body to two sides, compacting the rubber water stop section by section, overflowing the adhesive on two sides of the compacted rubber water stop, and cleaning the overflowing adhesive after the adhesive is fully solidified;
11-5) after the rubber water stop is stuck, installing a stainless steel nut in place on a steel plate basal plane, wherein the bolt fastening force is more than or equal to 5kg, and after the bolt is installed in place, pouring the joint of the bolt and the positioning steel plate tightly by pouring steel sticking glue;
11-6) mounting a water stop pressing plate on the surface of the rubber water stop belt, adopting stainless steel or galvanized steel plate with the width of 5cm and the thickness of 5mm as the water stop pressing plate, then arranging a plurality of holes with the diameter of 16mm on the water stop pressing plate, wherein the intervals among the holes correspond to the intervals of bolt holes on a positioning steel plate base surface, and then coating steel type structural adhesive on the adhesion surface of the water stop pressing plate and the rubber water stop belt, wherein the thickness of the coating is 2-3mm; installing a gasket and a screw cap at the same time, pressing and screwing the gasket and the screw cap after the position is accurately adjusted and positioned until the colloid overflows from two sides, and taking the screw cap as a reference after the colloid of the water stopping pressing plate is solidified, and locally repairing and cleaning the water stopping groove;
twelfth, installing a water stopping structure on the outer side of the water stopping belt, and then sealing the water stopping groove by adopting acrylic mortar, wherein the water stopping groove comprises a steel plate basal plane and notches formed in concrete positions on two sides;
further, in the twelfth step, the method further includes the steps of:
12-1) the water stopping structure is a galvanized water stopping copper sheet, the water stopping structure of the post-pouring belt is arranged at a position 32cm below the bottom plate of the aqueduct body, and the connecting surface of the water stopping structure is a smooth, hole-free and crack-free surface; when the welding connection is adopted, the butt welding is single-sided double-layer welding, the lap welding is double-sided welding, the lap joint length is more than 20mm, the tensile strength of the spliced part is not less than that of a base material, and the vertical and horizontal bottoms are required to be maintained during installation;
12-2) backfilling the water stop groove with M40 pre-shrinking emulsion mortar layer by layer from the bottom of the aqueduct body to be dense, and performing mortar vibrating and maintenance work;
12-3) adopting spray curing for 24 hours, then adopting water spraying curing, filling asphalt hemp yarns into the water-stopping slot holes after the mortar sealing layer meets the strength requirement, and finally embedding a polyethylene closed-cell foam board and a two-component polysulfide sealant into a 5cm split between the slot bodies;
in the fifth step, as the distance between the two post-cast strips is smaller, the space is narrow, and both sides are 53cm, in order to ensure the concrete pouring quality of the post-cast strips, a Q235 steel template is adopted as a steel template or panel; the template mounting structure comprises a template structure and an auxiliary bracket; the template structure comprises a bottom die, an inner die, an outer die, a panel and a pull rod beam, wherein the U-shaped template is assembled and formed to be matched with the aqueduct body, the U-shaped template consists of the upper part of the U-shaped template and the lower part of the frame-shaped template, the outer die is connected with the bottom die up and down and is arranged as the outer side surfaces of two sides of the template, and the inner die is arranged as the inner side surface of the template; the outer side die and the inner die are spliced into a three-dimensional structure through a panel, and a counter-pulling hole for installing a counter-pulling rod is reserved on the panel;
wherein the outer side die and the bottom die are respectively provided with two parts which are symmetrically arranged at the two sides of the die plate respectively; the pull rod Liang Dashe is arranged on the two outer side dies to support the pull rod beam through the two outer side dies, the outer side dies comprise a first outer side die, a second outer side die and a third outer side die, the first outer side die and the second outer side die are of a vertical plate structure and are sequentially and vertically arranged on the outer side face of the panel, the first outer side die and the second outer side die are fixedly assembled in a stacked mode, and the third outer side die is connected to the top of the first outer side die and is obliquely upwards; the size of the outer dies is exemplified in the embodiment, the number of the first outer dies is 1300×3400 steel dies, the two outer dies are arranged and are symmetrically connected on two sides of the panel, the second outer dies are 2 1300×3070mm steel dies and are respectively arranged on the outer sides of the two first outer dies, the third outer dies are 2 1300×400mm steel dies and are respectively connected on the tops of the two first outer dies, and an intersection angle between the inclined upward outer dies and the first outer dies is an obtuse angle; the pull rod beam is a pull rod cross beam, and the cross frame is arranged above the outer side die;
the inner die comprises an inner die side face, an inner die bottom face and an inner die top face, and is installed along the inner side of the panel; the inner mold side surface of the inner mold comprises an inner mold upper side surface and an inner mold lower side surface which are respectively arranged at the inner side surfaces of the panels at the upper part and the lower part of the mold plate; the bottom surface of the inner mold is arranged at the inner side surface of a panel at the upper part of the mold plate and spliced with the upper side surface of the inner mold from the lower end, the top surface of the inner mold is arranged at the inner side surface of the panel at the lower part of the mold plate and spliced with the lower side surface of the inner mold from the upper end, the top surface of the inner mold is of a wood mold plate structure, and the side surface of the inner mold and the top surface of the inner mold are of a steel mold plate structure;
the bottom die is a single-layer or double-layer steel template structure connected with the bottom end of the outer die, wherein the double-layer steel template structure is provided with two superposed steel plates, the two superposed steel plates respectively correspond to the thicknesses of the first outer die and the second outer die, and the single-layer steel template structure corresponds to the combined thickness of the first outer die and the second outer die; in the embodiment, each steel template is provided with a transverse rib and a longitudinal rib, the transverse rib adopts 8# channel steel, the longitudinal rib adopts t=8mm×80mm flat steel, the panel is reserved with opposite-drawing holes D35mm/D40mm, the frame adopts t=12 mm×80mm flat steel, and the pull rod adopts D25mm finish-rolling deformed steel; the template structure also comprises a reinforcing fixed steel bar, and the reinforcing fixed steel bar is locked through bolts after penetrating through the inner die and the outer die;
the auxiliary support is arranged at an outer die or an inner die of the upper part of the template and comprises a movable back frame, a support, a supporting rod, a pair of pull rods and a jacking, wherein the movable back frame of the auxiliary support is arranged on the outer die, the support is arranged at the upper part of the template, two ends of the support are connected with the supporting rod, the bottom end of the supporting rod is arranged on the bottom surface of the inner die of the upper part of the template through the jacking and supporting, the pair of pull rods are arranged between the vertical rods and the upper side surface of the inner die, the movable back frame is formed into a vertical support and consists of a transverse supporting plate, an inclined supporting plate and a vertical plate, the vertical plate is vertically arranged beside the outer die, the transverse supporting plate is provided with a plurality of plates which are longitudinally spaced and parallel, one side of each plate is vertically arranged on the vertical plate, the other side of each plate is connected to the outer die, and the inclined supporting plate is connected between the two adjacent transverse supporting plates; the support is arranged in the middle of the upper part of the template, the two ends of the support are connected with supporting rods, the top of each supporting rod is connected with the bottom of the internal mold through a jacking, the counter pull rod comprises a transverse counter pull rod and an oblique counter pull rod, the transverse counter pull rod and the oblique counter pull rod are overlapped between the vertical rod and the upper side surface of the internal mold, the oblique counter pull rod is arranged between the two transverse counter pull rods, and the counter pull rod can be prepared by adopting D25mm finish rolling screw steel;
in this embodiment, the templates are connected by flanges, and the dimensions of a part of the templates are as follows: the lower side of the inner mold can adopt 4 650×750mm steel templates, the upper side of the inner mold can adopt 4 650×750×150mm steel templates, the top surface of the inner mold can adopt 5400×1100mm wood templates, t=4 mm of the panel, the border of the edge can adopt t=6 mm×50mm flat steel/L50×5mm angle steel, the longitudinal rib of the steel template adopts t=6 mm×50mm flat steel, and the panel is reserved with a counter-pull hole D35mm; for the upper side of the inner die, the joint of the lower position and the bottom surface of the inner die is provided with a lower chamfer, 2 1300 multiplied by 1000mm steel templates can be adopted, and for the lower side of the inner die and the top surface of the inner die, as the lower part of the templates is shaped into a frame, square through grooves are formed in the lower part of the templates, the lower side of the inner die is arranged at the side surfaces of the through grooves, and the top surface of the inner die is arranged at the top surface of the through grooves.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, and those skilled in the art may make various changes and modifications within the scope of the technical solution of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical matters of the present invention are still within the scope of the technical solution of the present invention.
Claims (8)
1. The utility model provides a aqueduct body post-cast strip construction technology, includes two adjacent aqueduct bodies of striding, the adjacent face of two aqueduct bodies is the interior wall, the aqueduct body outwards is the outer wall, post-cast strip sets up as the construction joint between two aqueduct bodies of striding, its characterized in that, construction technology mainly include the step:
firstly, performing basal plane roughening and cleaning at a new and old concrete combined basal plane at the aqueduct body;
secondly, preparing a reinforcing steel bar, a water stop belt and a water stop structure, and applying the reinforcing steel bar, the water stop belt and the water stop structure when the reinforcing steel bar is to be installed, and simultaneously carrying out rust removal treatment on the surface of the reinforcing steel bar;
thirdly, drawing out accumulated water at the post-pouring belt and airing;
fourthly, pre-burying and installing a positioning steel plate and bolts on the combined base surface, wherein the positioning steel plate is marked by positioning lines during positioning;
fifthly, installing a post-pouring belt template and an auxiliary bracket;
sixthly, treating a concrete interface, and brushing a layer of interfacial agent or plain cement slurry before pouring the post-pouring strip so as to prepare for the subsequent pouring of concrete;
seventh, checking the treatment before pouring and trimming unqualified parts;
eighth, pouring concrete into the post-pouring belt;
ninth, curing the concrete of the post-cast strip;
tenth, polishing and trimming the steel plate basal plane on which the positioning steel plate is mounted;
eleventh step, installing a water stop belt on the inner side of the aqueduct body;
and twelfth, installing a water stopping structure on the outer side of the water stopping belt, and then sealing the water stopping groove by adopting acrylic mortar.
2. The post-pouring strip construction process of an aqueduct body according to claim 1, wherein in the fourth step, the method further comprises the steps of:
4-1) before the positioning steel plate is installed, marking positioning lines on a combined base surface which is roughened and cleaned;
4-2) pre-positioning the pre-embedded positioning steel plates through two steel bars, wherein the two 20 steel bars are connected with the steel bars of the aqueduct body structure, and the positioning steel plates are arranged on the steel bars so as to fix and position the positioning steel plates on the combined base surface;
4-3) arranging bolt holes on the positioning steel plate to install bolts, wherein the center distance of each bolt hole on the positioning steel plate is 11.5cm from the length of the post-cast strip, and determining the installation position of the water stop belt through the embedded bolts;
4-4) preparing to pour the concrete of the aqueduct body after the bolts, the sleeves, the positioning steel plates and the combined base surface are fixed.
3. The post-pouring strip construction process of the aqueduct body according to claim 1, wherein in the fifth step, the post-pouring strip template comprises a template structure and an auxiliary bracket; the template structure comprises a bottom die, an inner die, an outer die, a panel and a pull rod beam, wherein the U-shaped template is assembled and formed to be matched with the aqueduct body, the U-shaped template consists of the upper part of the U-shaped template and the lower part of the frame-shaped template, the outer die is connected with the bottom die up and down and is arranged as the outer side surfaces of two sides of the template, and the inner die is arranged as the inner side surface of the template; the outer side die and the inner die are spliced into a three-dimensional structure through a panel; wherein the outer side die and the bottom die are respectively provided with two parts which are symmetrically arranged at the two sides of the die plate respectively; the tie bars Liang Dashe are above the two outer dies to support the tie bar beams through the two outer dies; the inner die comprises an inner die side face, an inner die bottom face and an inner die top face, and is installed along the inner side of the panel; the auxiliary support is arranged at the outer die or the inner die at the upper part of the template and comprises a movable back frame, a support, a supporting rod, a pair of pull rods and a jacking.
4. The post-cast strip construction process for an aqueduct body according to claim 3, wherein in the fifth step, the post-cast strip template construction further comprises the steps of:
5-1) fixedly mounting a bottom die of the post-cast strip, and then assembling the first outer die, the second outer die and the third outer die to form an outer die of the post-cast strip, and connecting and reinforcing the outer die through a truss;
5-2) when the outer die is installed, firstly, sliding or hoisting the outer die in place, aligning the outer die with the relative position of the bottom die, and adjusting the verticality of the outer die by using a top compression bar;
5-3) after the outer side die is installed, fixing firmly by using a connecting mechanism, and installing a counter pull rod;
5-4) the inner mold is assembled in a movable sectional manner through an auxiliary bracket, and when the inner mold sections are assembled, double-sided adhesive tapes are adhered in joints;
5-5) supporting the vertical installation panel, wherein the installation sequence is that the installation is firstly carried out from the bottom die and then from the side die;
5-6) after the whole structure of the post-pouring belt template is installed, concrete pouring is carried out, and the casting is finished at one time according to the cross section structure of the aqueduct body, and a water stopping groove is preset in the post-pouring belt template.
5. The post-cast strip construction process for an aqueduct body according to claim 1, wherein in the eighth step, the post-cast strip concrete casting construction process further comprises the steps of:
8-1) adopting C50W8F150 micro-expansive concrete as concrete for pouring a post-pouring belt, and preparing the concrete to be doped with cement and a UEA expanding agent, wherein the content of the UEA expanding agent is 10-15% of the cement consumption, and the error is equal to or lower than 0.5%;
8-2) when the post-cast strip concrete is cast, the casting temperature is less than or equal to 26 ℃ and is more than or equal to 5 ℃;
8-3) mixing the concrete uniformly by a forced mixer after the UEA expanding agent is doped.
6. The post-pouring strip construction process of an aqueduct body according to claim 1, wherein in the tenth step, further comprising the steps of:
10-1) before the water stop structure is installed and constructed, polishing a steel plate base surface, roughening a concrete combined base surface, washing the concrete by a high-pressure water gun, and uniformly coating a layer of interfacial agent after airing;
10-2) checking whether concrete pouring is compact within the range of the water stop groove, and when the compactness of the concrete is insufficient, timely chiseling loose concrete and pouring steel adhesive for filling compaction.
7. The post-pouring strip construction process of an aqueduct body according to claim 1, further comprising the steps of:
11-1) after the post-cast strip concrete pouring and the concrete curing are completed, the rubber water stop strip is installed after the concrete reaches the strength of 6.5-8.5 days;
11-2) the water stop is a rubber water stop, the base surface of the water stop groove is cleaned by using the plane of the water stop groove before installation, the adhesive surface of the rubber water stop and the positioning steel plate is polished and cleaned by using the plane of the water stop;
11-3) determining the positions of bolt holes on the rubber water stop belt according to the positions of the embedded bolts, wherein the control hole pitch is the same as the hole pitch of the bolts on the steel plate basal plane when the rubber water stop belt is drilled;
11-4) uniformly coating steel structural adhesive on the adhesive surface of the rubber water stop, sequentially installing the rubber water stop from the bottom of the aqueduct body to two sides, and cleaning overflowing colloid after the colloid is fully solidified;
11-5) after the rubber water stop is stuck, mounting a stainless steel nut in place on a steel plate basal plane, and after the bolt is mounted in place, pouring the joint of the bolt and the positioning steel plate with pouring type steel sticking glue for compaction;
11-6) installing a water stopping pressing plate on the surface of the rubber water stopping belt, installing a gasket and a screw cap at the same time, pressing and screwing the rubber water stopping belt until the rubber overflows from two sides after the position is accurately adjusted, and carrying out local repair and cleaning in the water stopping tank after the rubber of the water stopping pressing plate is solidified when the screw cap is more than the screw cap.
8. The post-pouring strip construction process of an aqueduct body according to claim 1, further comprising the steps of:
12-1) the water stopping structure is a galvanized water stopping copper sheet, the water stopping structure of the post-pouring belt is arranged at a position 32cm below the bottom plate of the aqueduct body, and the connecting surface of the water stopping structure is a smooth, hole-free and crack-free surface;
12-2) backfilling the water stop groove with M40 pre-shrinking emulsion mortar layer by layer from the bottom of the aqueduct body to be dense, and performing mortar vibrating and maintenance work;
12-3) adopting spray curing for 24 hours, then adopting water spraying curing, filling asphalt hemp yarns into the water-stopping slot holes after the mortar sealing layer meets the strength requirement, and finally embedding a polyethylene closed-cell foam board and a double-component polysulfide sealant into the parting between the slot bodies.
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| CN111516135B (en) * | 2020-04-01 | 2021-11-02 | 中铁十七局集团第三工程有限公司 | Water stop embedded part positioning die and method |
| CN112593529A (en) * | 2020-12-08 | 2021-04-02 | 河北省水利工程局 | Construction method of thin-wall prestressed concrete aqueduct |
| CN112709259B (en) * | 2020-12-24 | 2022-04-01 | 中交第四航务工程局有限公司 | Post-cast strip full-section construction and maintenance method |
| CN115478514A (en) * | 2022-09-27 | 2022-12-16 | 青海省水利水电勘测规划设计研究院有限公司 | Aqueduct expansion joint water stop structure and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185277A1 (en) * | 2012-06-11 | 2013-12-19 | 浙江省建工集团有限责任公司 | Constructing method for concrete cylinder of construction steel bar of high-rise steel structure |
| CN103821364A (en) * | 2014-02-24 | 2014-05-28 | 中国化学工程第十四建设有限公司 | Method for constructing reinforced concrete pond |
| CN105821804A (en) * | 2016-03-23 | 2016-08-03 | 河南省水利勘测设计研究有限公司 | Method for preventing waterproof groove sealing material of prefabricated aqueduct from falling |
| CN107044171A (en) * | 2017-06-02 | 2017-08-15 | 中联世纪建设集团有限公司 | Butyl putty steel plate water-stopping rear pouring tape construction method |
| CN108086363A (en) * | 2017-12-12 | 2018-05-29 | 浙江视野环境艺术装饰工程有限公司 | Underground waterproof shear wall post-pouring zone construction process |
| CN210712751U (en) * | 2019-09-11 | 2020-06-09 | 广东省水利水电第三工程局有限公司 | Aqueduct trough body post-cast strip concrete formwork mounting structure |
-
2019
- 2019-09-11 CN CN201910856405.8A patent/CN110468790B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013185277A1 (en) * | 2012-06-11 | 2013-12-19 | 浙江省建工集团有限责任公司 | Constructing method for concrete cylinder of construction steel bar of high-rise steel structure |
| CN103821364A (en) * | 2014-02-24 | 2014-05-28 | 中国化学工程第十四建设有限公司 | Method for constructing reinforced concrete pond |
| CN105821804A (en) * | 2016-03-23 | 2016-08-03 | 河南省水利勘测设计研究有限公司 | Method for preventing waterproof groove sealing material of prefabricated aqueduct from falling |
| CN107044171A (en) * | 2017-06-02 | 2017-08-15 | 中联世纪建设集团有限公司 | Butyl putty steel plate water-stopping rear pouring tape construction method |
| CN108086363A (en) * | 2017-12-12 | 2018-05-29 | 浙江视野环境艺术装饰工程有限公司 | Underground waterproof shear wall post-pouring zone construction process |
| CN210712751U (en) * | 2019-09-11 | 2020-06-09 | 广东省水利水电第三工程局有限公司 | Aqueduct trough body post-cast strip concrete formwork mounting structure |
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