CN104153392A - Underwater PBM polymer concrete construction method - Google Patents
Underwater PBM polymer concrete construction method Download PDFInfo
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- CN104153392A CN104153392A CN201410271156.3A CN201410271156A CN104153392A CN 104153392 A CN104153392 A CN 104153392A CN 201410271156 A CN201410271156 A CN 201410271156A CN 104153392 A CN104153392 A CN 104153392A
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Abstract
The invention discloses an underwater PBM polymer concrete construction method. The method comprises the following steps of (1) preparing for construction, (2) inspecting, measuring and marking underwater, (3) cutting and chiseling concrete underwater, (4) finishing and cleaning scour pits, (5) laying anchor bars and bar-mat reinforcing meshes by drilling holes underwater, (6) manufacturing and mounting formworks, (7) preparing and pouring PBM polymer concrete, (8) maintaining and removing the formworks and (9) bulging and repairing. By means of the method, no guide pipe is needed, mixing materials can be poured into water through a water layer, the anti-shock capacity and wear-proof capacity are improved, the construction labor intensity is made to be low, construction efficiency is high, the construction period is short, and quick underwater PBM polymer concrete construction is achieved, so that construction links are simplified, construction progress is accelerated, construction quality is guaranteed, and economical benefits and social benefits are obvious.
Description
Technical field
The present invention relates to the application of a kind of PBM polymer in constructing under water, relate in particular to a kind of polymer concrete of PBM under water construction.
Background technology
Along with the continuous acceleration of Urbanization Process In China, high level and super highrise building are rised sheer from level ground in city as emerged rapidly in large numbersBamboo shoots after a spring rain; The paces that China's basisization is built in addition are progressively accelerated, and the construction of bridge tunnel becomes the emphasis of traffic construction; The construction of high level and Supper-tall Building Foundations pile foundation, diaphragm wall; Bridge tunnel construction in transport development all faces an identical difficult problem, it is underwater concrete construction, this constructs, and not only difficulty is high, and make the basis of structure, once go wrong, will directly lead to disastrous consequence, even if pinpoint the problems in time, but due to residing position and construction environment, be difficult to do over again or keep in repair, so underwater concrete construction becomes the large difficult point of one in current engineering construction.
Construction method (the application number: 201010297900.9 of the patent of invention pouring underwater concrete by movable end cap method that China national Department of Intellectual Property announces, notification number: CN101956393B, the day for announcing: 2012.04.18), its step comprises equipment counterweight on conduit, movable drain plug is arranged on to lower end the sealing of conduit, suspension hook connects seizing wire, seizing wire is caused below the water surface, concrete perfusion in conductive pipe, upwards mention conduit simultaneously, concrete is flowed out from conduit lower end, utilize seizing wire that movable drain plug is left the water.Although intubate operation while having simplified underwater concrete perfusion, sediment and the impact of conduit internal water accumulation on concrete density have under water been eliminated, guaranteed construction quality, but whole labour intensity is large, construction link relatively or some is loaded down with trivial details, construction speed is slow, extends the construction period, and then has increased construction cost.
Summary of the invention
The object of the invention is to the many deficiencies for prior art, a kind of polymer concrete of PBM under water construction is provided, low to reach construction labour intensity, construction effect is high, construction period is short, has realized the rapid construction of PBM polymer concrete under water, has reduced thus construction link, has accelerated construction speed, and construction quality, the obvious effect of economic benefit and social benefit have been guaranteed.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A PBM polymer concrete construction, is characterized in that comprising the steps: under water
(1) preparation of construction
Construction plant is reconnoitred, and carry out the work of confiding a technological secret, working plant equipment is transported to construction plant and checks, carry out registration, light distribution circuit and lighting apparatus are installed;
(2) submarine inspection, measurement and sign
Measurement results in conjunction with underwater camera audit report, under diver, hydrosphere periodical repair is mended scope, and the hole that simultaneously liquidates is done submarine inspection and measurement one by one, then will make repairing scope and identify under water setting-out, outside setting-out, 4～6cm marks cutting sideline, as the sideline of processing foundation trench excavation under water;
(3) cut, cut concrete under water
By diver, with hydraulic diamond chain saw, along the line of cut having marked, cut out reinforcement edge line under water under water, then with Hydraulic pick, cut the concrete in foundation trench, make the degree of depth of building each position be greater than 15cm simultaneously;
(4) finishing and the cleaning in punching hole
First remove and accumulate the foreign material in foundation trench, and loosening the reinforcement of concrete Hydraulic pick in punching hole is cut, expose inner concrete, then to the reinforcing bar rust cleaning of having exposed, then facing to the smooth destruction face of concrete in punching hole, use Hydraulic pick dabbing, then with giant, the concrete, steel bar end and other eliminating impurities that in punching hole, cut are gone out;
(5) underwater drilling is laid dowel and steel mesh reinforcement
First according to cutting, the shape of perforated after cleaning, the size of area is determined cloth hole site, by diver, measure under water and locate the position in dowel hole, with hydraulic drill under water by pitch-row 35～45cm boring, after boring, with giant, considering slag punching in hole to be worth doing, remove clean, then in inside, fill PBM resin-bonded mortar as Anchor Agent, after the perfusion degree of depth to dowel inserts, Anchor Agent overflows, and the reinforcing bar of rotation insertion, again T shape dowel is squeezed in dowel hole, Anchor Agent sclerosis is after 15 hours, by diver, the two-way concrete slab net integral body that colligation is good is on the coast hung to lower water in place, and raise steel mesh reinforcement with cushion block,
(6) making of template and installation
The template of setting up for needs is rushed hole, makes the concrete of building form flow-passing surface in water (flow) direction, and concrete charging aperture and overfall are set in template, charging aperture is located at template top, overfall is located on four angles of template, and overfall arranges loose-leaf cover plate, and carries out capping; By diver, carry out template installation, find datum accurately, template is covered on the face of building, lower and periphery adopts expansion bolt fixed form thereon;
(7) preparation of PBM polymer concrete with build
The adjustment of temperature and water temperature PBM polymer concrete firm time when building, build and frontly first sand, stone are dried, then weigh in proportion pack, during stirring, sand, stone, cement are poured into mixer and stirred, glue is poured into and mixed and stirred bucket simultaneously, after stirring, pour in the siccative being stirred and stir 5min; The PBM polymer concrete preparing is packed in charging basket, hang under water, diver is poured into damaged part with conduit, in edge, with instrument, vibrate, while building, with conduit, PBM polymer concrete is delivered to and built in storehouse, in four jiaos of reserved holes of template, overflow after concrete, reserving hole shutoff, to the last in a reserving hole, overflow concrete also till holes blocking;
(8) maintenance and form removal
In concreting, after one week, carry out form removal, the dowel that exposes concrete surface is cut off, after moulding, by diver, use Underwater Camera inspection;
(9) bulge reparation
Diver adopts spanner that the expansion bolt of former fixedly use is unclamped, and bulge segmentation is split, and then clears up, and the cementing agent modulating is brushed, evenly brushing primer; After primer surface dry, repair, then cover SR antiseepage cover plate.
The present invention, owing to having adopted technique scheme, has following beneficial effect:
PBM polymer concrete is to take PBM resin as bonding agent, the polymer concrete that itself and aggregate (stone, sand, cement) are consolidated into, it has the combination property of macromolecule and inorganic material, can rapid curing in water, within one day, can reach compressive strength more than 30MPa, controlled its hardening time by the consumption of hardener, can to a few hours, regulate at tens minutes; Can meet under the prerequisite of concrete defect Disposal quality requirement, PBM resin is water insoluble, makes again aggregate have very high viscosity simultaneously, and its mix does not disperse in water, does not need conduit during construction, can directly through water layer, be poured into water, and improves impact-resisting wear-resisting ability; PBM is interpenetrating network macromolecule material, has different high molecular complementations and cooperative effect, embodies the performance of high polymer alloy; Do not need to vibrate, can Self-leveling, self-compaction, can carry out under water several centimetres of above thin layers and repair, can carry out facade cast and plane and pave; The good endurance of PBM polymer concrete, porosity is low, and shrinkage factor is little, and adhesion stress is strong, has good impact-resisting wear-resisting, corrosion-resistant and superior antidetonation, cracking resistance, damping.The construction labour intensity of the inventive method is low, and construction effect is high, and the construction period is short, realized the rapid construction of PBM polymer concrete under water, reduced thus construction link, accelerated construction speed, and guaranteed construction quality, economic benefit and social benefit are obvious.
Accompanying drawing explanation
Below in conjunction with accompanying drawing explanation, the invention will be further described:
Fig. 1 is the process chart of a kind of PBM under water of the present invention polymer concrete construction;
Fig. 2 is the laying schematic diagram of dowel in the present invention, reinforcing bar and T steel muscle.
The specific embodiment
A kind of PBM under water of the present invention polymer concrete construction, its technological principle is to take PBM resin as bonding agent, itself and aggregate (stone, sand, cement) are consolidated into polymer concrete, then PBM polymer concrete are hung under water by woven bag, build.
This construction method need to be prepared following material:
1, stone, sand, cement, PBM resin aggregate, accelerator, initator, hardener.
2, plant: hydraulic power station, hydraulic diamond chain saw, Hydraulic pick, giant, hydraulic drill, generator, air compressor machine, electric winch, combined type feeder, gas cylinder, mixer, pneumatic pick under water.Conventional subaqueous construction hydraulic test is as described in Table 1:
Table 1 is commonly used subaqueous construction hydraulic test
The inventive method comprises the steps (as depicted in figs. 1 and 2):
(1) preparation of construction
Construction plant is reconnoitred, and carry out the work of confiding a technological secret, working plant equipment is transported to construction plant and checks, carry out registration, light distribution circuit and lighting apparatus are installed;
(2) submarine inspection, measurement and sign
Measurement results in conjunction with underwater camera audit report, under diver, hydrosphere periodical repair is mended scope, and the hole that simultaneously liquidates is done submarine inspection and measurement one by one, then will make repairing scope and identify under water setting-out, outside setting-out, 4～6cm marks cutting sideline 1, as the sideline of processing foundation trench excavation under water;
(3) cut, cut concrete under water
By diver, with hydraulic diamond chain saw, along the line of cut having marked, cut out reinforcement edge line under water under water, guarantee the sealing of cutting sideline, make it to form foundation trench, to increase the thickness of periphery repair layer, the old and new's bonding surface is moved down, imbed under flow-passing surface, improve its durability and stability, then with Hydraulic pick, cut the concrete in foundation trench, make the degree of depth of building each position be greater than 15cm simultaneously, in order to meet concrete strength, durability and structural requirement;
(4) finishing and the cleaning in punching hole
First remove and accumulate the foreign material in foundation trench, and loosening the reinforcement of concrete Hydraulic pick in punching hole is cut, expose inner concrete, then, to the reinforcing bar rust cleaning of having exposed, reach without iron mold, without rust staining, intensity that can concreting; Then facing to the smooth destruction face of concrete in punching hole, use Hydraulic pick dabbing, strengthen and build the roughness of face and the bond strength of New-old concrete, then with giant, the concrete, steel bar end and other eliminating impurities that in punching hole, cut are gone out;
(5) underwater drilling is laid dowel and steel mesh reinforcement
First according to cutting, after cleaning, the shape of perforated is, the size of area is determined cloth hole site, by diver, measure under water and locate the position in dowel hole, with hydraulic drill under water by pitch-row 35～45cm boring, after boring, with giant, considering slag punching in hole to be worth doing, remove clean, then in inside, fill PBM resin-bonded mortar as Anchor Agent, after the perfusion degree of depth to dowel 2 inserts, Anchor Agent overflows, insertion speed is slow, and the reinforcing bar 3 of rotation insertion, Anchor Agent and anchor pole and hole wall are adjacent to, strengthen anchored force; Again T shape dowel 4 is squeezed in dowel hole, Anchor Agent sclerosis is after 15 hours, by diver, the two-way concrete slab net integral body that colligation is good is on the coast hung to lower water in place, and raise steel mesh reinforcement with cushion block, to guarantee that steel mesh reinforcement is arranged in, newly water concrete top under water, guarantee the thickness of concrete cover simultaneously;
(6) making of template and installation
The template of setting up for needs is rushed hole, makes the concrete of building form flow-passing surface in water (flow) direction, reduces eddy current and resistance to water-flow, the concrete quality that assurance is newly built, and improve impact-resistant abrasion-proof ability; Concrete charging aperture and overfall are set in template, and charging aperture is located at template top, and overfall is located on four angles of template, and overfall arranges loose-leaf cover plate, and carries out capping; By diver, carry out template installation, find datum accurately, template is covered on the face of building, lower and periphery adopts expansion bolt fixed form thereon;
(7) preparation of PBM polymer concrete with build
The adjustment of temperature and water temperature PBM polymer concrete firm time when building, build and frontly first sand, stone are dried, then weigh in proportion pack, during stirring, sand, stone, cement are poured into mixer and stirred, glue is poured into and mixed and stirred bucket simultaneously, after stirring, pour in the siccative being stirred and stir 5min; The PBM polymer concrete preparing is packed in charging basket, hang under water, diver is poured into damaged part with conduit, in edge, with instrument, vibrate, while building, with conduit, PBM polymer concrete is delivered to and built in storehouse, in four jiaos of reserved holes of template, overflow after concrete, reserving hole shutoff, to the last in a reserving hole, overflow concrete and till holes blocking, build PBM concrete aggregate concrete Self-leveling rear surface height and be consistent with not damaged periphery concrete face; PBM polymer concrete has higher intensity, and there is high adhesive strength with concrete and metal, because being wraps up aggregate by macromolecule resin, by adjusting the viscosity of resin, can accomplish that fetters and aggregate do not emanate in flow process in water, can guarantee can directly by water layer, build in water, and not need to adopt the measures such as tube drawing, greatly convenient construction.PBM polymer concrete performance indications are as shown in table 2:
Table 2PBM polymer concrete performance indications
(8) maintenance and form removal
In concreting, after one week, carry out form removal, the dowel that exposes concrete surface is cut off, after moulding, by diver, use Underwater Camera inspection;
(9) bulge reparation
Diver adopts spanner that the expansion bolt of former fixedly use is unclamped, and bulge segmentation is split, and then clears up, and the cementing agent modulating is brushed, evenly brushing primer; After primer surface dry, repair, then cover SR antiseepage cover plate, SR antiseepage cover plate is a kind of sheet impervious material, can effectively process the micro-cracks of concrete surface, and can prevent the seepage that new crack produces, can directly construct at concrete in water upstream face, form flexible barrier system, the characteristic such as there is easy construction, seam distortion strong adaptability, good seepage-proof property, maintenance and inspection are convenient, the cost of material is low.Order from top to bottom, by centre to both sides during stickup is sticked on the face of shrinkage joint and is suppressed closely knit.
The inventive method environmental practice:
(1) cutting, cut first-class collection of foreign material, concrete, reinforcing bar of getting off under water, focus on, forbid throwing out without care and affect environment;
(2) waste material after template construct focuses on or reclaims rear recycling, economize on resources, and protection of the environment, reasonable disposition template, reduces template leftover pieces, and transport vehicle will seal well, the sanitation and hygiene that guarantee road must not abandon, drop solid waste on the way in transportation;
(3) in the process of construction, should adopt the plant equipment of low-noise environment protection type, to reduce noise pollution, not affect the normal life of surrounding resident;
(4) job site is set up and be take the environmental protection group that program manager is group leader, improves every management system, fulfills one's duties step by step, by tissue, implement, check, check and accept integrated, standardization and institutionalization.
The inventive method quality control method:
(1) after PBM polymer concrete form removal, maintenance, must carry out quality examination, the maintenance in its early stage is paid attention to especially, extend its application life;
(2) select and appoint experienced diver to carry out submarine inspection, measurement and sign, improve the accuracy of anchor hole location, make construction more efficient;
(3) foreign material in foundation trench will be removed totally, to the reinforcing bar rust cleaning of having exposed, and remove with giant, improve the construction quality of PBM polymer concrete;
(4) standard is wanted in the making of template and installation, and the charging aperture arranging in template and overfall quantity can not be lacked, and want accurately position simultaneously, guarantees that concrete can overflow;
(5) PBM polymer concrete weighing ratio is in the preparation wanted accurately, to stir, and mixing time is wanted rationally, to improve the quality of PBM polymer, and then improves construction quality;
(6) will be the position of being rivals in a contest when PBM polymer concrete is built under water, prevent casting position not on and affect construction quality, when building, speed is wanted evenly, improves and builds effect.
The inventive method safety measure:
(1) education that tightens security, before strict implement class, safety education and security activity system, hand over the safety notice in recent work targetedly;
(2) in engineering construction, set up site safety production leading group, as this projects production safety management mechanism;
(3) be the generation of prevention object strike accident, constructor enters scene, and Safety helmet must be worn, fastens hatband;
(4) in lifting operation process, lifting object occurs to tilt, the reason of damage crane etc., take following measures: the operation of lifting appliance, must be undertaken by the regulations for technical operation of machinery itself, and carrying out < < safety rules for lifting appliances > >, operating personnel must be through job that requires special skills specialized training, examines the operation of taking appointment with certificate after qualified;
(5), before lifting operation, by the isolation of lifting operation deathtrap, unrelated person No Admittance, during lifting operation, forbids someone to stop in arm scope of activities or walks, and assigning special messenger to guard, and stipulates unified cue, unified command;
(6) for preventing the generation of electric shock accidents, field connection all should strictly be carried out, and electric wire must not be held together with metal object, and on-the-spot electric hand tool and the packaged type electric tools using must be installed highly sensitive earth leakage protective device.
These are only specific embodiments of the invention, but technical characterictic of the present invention is not limited to this.Anyly take the present invention as basis, for realizing essentially identical technique effect, done ground simple change, be equal to and replace or modification etc., be all covered by among protection scope of the present invention.
Claims (1)
1. a PBM polymer concrete construction under water, is characterized in that comprising the steps:
(1) preparation of construction
Construction plant is reconnoitred, and carry out the work of confiding a technological secret, working plant equipment is transported to construction plant and checks, carry out registration, light distribution circuit and lighting apparatus are installed;
(2) submarine inspection, measurement and sign
Measurement results in conjunction with underwater camera audit report, under diver, hydrosphere periodical repair is mended scope, and the hole that simultaneously liquidates is done submarine inspection and measurement one by one, then will make repairing scope and identify under water setting-out, outside setting-out, 4～6cm marks cutting sideline, as the sideline of processing foundation trench excavation under water;
(3) cut, cut concrete under water
By diver, with hydraulic diamond chain saw, along the line of cut having marked, cut out reinforcement edge line under water under water, then with Hydraulic pick, cut the concrete in foundation trench, make the degree of depth of building each position be greater than 15cm simultaneously;
(4) finishing and the cleaning in punching hole
First remove and accumulate the foreign material in foundation trench, and loosening the reinforcement of concrete Hydraulic pick in punching hole is cut, expose inner concrete, then to the reinforcing bar rust cleaning of having exposed, then facing to the smooth destruction face of concrete in punching hole, use Hydraulic pick dabbing, then with giant, the concrete, steel bar end and other eliminating impurities that in punching hole, cut are gone out;
(5) underwater drilling is laid dowel and steel mesh reinforcement
First according to cutting, the shape of perforated after cleaning, the size of area is determined cloth hole site, by diver, measure under water and locate the position in dowel hole, with hydraulic drill under water by pitch-row 35～45cm boring, after boring, with giant, considering slag punching in hole to be worth doing, remove clean, then in inside, fill PBM resin-bonded mortar as Anchor Agent, after the perfusion degree of depth to dowel inserts, Anchor Agent overflows, and the reinforcing bar of rotation insertion, again T shape dowel is squeezed in dowel hole, Anchor Agent sclerosis is after 15 hours, by diver, the two-way concrete slab net integral body that colligation is good is on the coast hung to lower water in place, and raise steel mesh reinforcement with cushion block,
(6) making of template and installation
The template of setting up for needs is rushed hole, makes the concrete of building form flow-passing surface in water (flow) direction, and concrete charging aperture and overfall are set in template, charging aperture is located at template top, overfall is located on four angles of template, and overfall arranges loose-leaf cover plate, and carries out capping; By diver, carry out template installation, find datum accurately, template is covered on the face of building, lower and periphery adopts expansion bolt fixed form thereon;
(7) preparation of PBM polymer concrete with build
The adjustment of temperature and water temperature PBM polymer concrete firm time when building, build and frontly first sand, stone are dried, then weigh in proportion pack, during stirring, sand, stone, cement are poured into mixer and stirred, glue is poured into and mixed and stirred bucket simultaneously, after stirring, pour in the siccative being stirred and stir 5min; The PBM polymer concrete preparing is packed in charging basket, hang under water, diver is poured into damaged part with conduit, in edge, with instrument, vibrate, while building, with conduit, PBM polymer concrete is delivered to and built in storehouse, in four jiaos of reserved holes of template, overflow after concrete, reserving hole shutoff, to the last in a reserving hole, overflow concrete also till holes blocking;
(8) maintenance and form removal
In concreting, after one week, carry out form removal, the dowel that exposes concrete surface is cut off, after moulding, by diver, use Underwater Camera inspection;
(9) bulge reparation
Diver adopts spanner that the expansion bolt of former fixedly use is unclamped, and bulge segmentation is split, and then clears up, and the cementing agent modulating is brushed, evenly brushing primer; After primer surface dry, repair, then cover SR antiseepage cover plate.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108951608A (en) * | 2018-07-23 | 2018-12-07 | 博纳德（天津）港口工程有限公司 | Reinforce Diaphragm Wall Wharf underwater concrete structure construction engineering method |
| CN110409324A (en) * | 2019-06-13 | 2019-11-05 | 杭州国电大坝安全工程有限公司 | Underwater rapid reinforcement repairs structure, repairing construction equipment and construction method |
| CN110725320A (en) * | 2019-10-16 | 2020-01-24 | 北京翔鲲水务建设有限公司 | Sand prevention sill pouring method |
| CN113789764A (en) * | 2021-09-03 | 2021-12-14 | 华能澜沧江水电股份有限公司 | Method for repairing surface pit of hydraulic tunnel of hydropower station |
| CN114541337A (en) * | 2022-04-14 | 2022-05-27 | 重庆交通大学 | Method for repairing damage of abrasion section of debris flow drainage groove |
| CN115262497A (en) * | 2022-08-10 | 2022-11-01 | 东南粤水电投资有限公司 | Underwater concrete repairing method for trash rack gate slot of hydropower station |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951608A (en) * | 2018-07-23 | 2018-12-07 | 博纳德（天津）港口工程有限公司 | Reinforce Diaphragm Wall Wharf underwater concrete structure construction engineering method |
| CN110409324A (en) * | 2019-06-13 | 2019-11-05 | 杭州国电大坝安全工程有限公司 | Underwater rapid reinforcement repairs structure, repairing construction equipment and construction method |
| CN110725320A (en) * | 2019-10-16 | 2020-01-24 | 北京翔鲲水务建设有限公司 | Sand prevention sill pouring method |
| CN113789764A (en) * | 2021-09-03 | 2021-12-14 | 华能澜沧江水电股份有限公司 | Method for repairing surface pit of hydraulic tunnel of hydropower station |
| CN114541337A (en) * | 2022-04-14 | 2022-05-27 | 重庆交通大学 | Method for repairing damage of abrasion section of debris flow drainage groove |
| CN114541337B (en) * | 2022-04-14 | 2024-03-29 | 重庆交通大学 | Method for repairing damage of abrasion section of debris flow drainage groove |
| CN115262497A (en) * | 2022-08-10 | 2022-11-01 | 东南粤水电投资有限公司 | Underwater concrete repairing method for trash rack gate slot of hydropower station |
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Address after: Green Ting Road Yuhang District Cang Qian street of Hangzhou city Zhejiang province 310000 No. 1 Building 1 room 171 Applicant after: Hangzhou Huaneng engineering safety Polytron Technologies Inc Address before: In the city 310000 Hangzhou Road, Zhejiang province No. 108 room 1706 Applicant before: HANGZHOU HUANENG DAM SAFETY ENGINEERING TECHNOLOGY CO., LTD. |
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Application publication date: 20141119 |