CN103821364B - The construction method of reinforced concrete water pond - Google Patents
The construction method of reinforced concrete water pond Download PDFInfo
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- CN103821364B CN103821364B CN201410062663.6A CN201410062663A CN103821364B CN 103821364 B CN103821364 B CN 103821364B CN 201410062663 A CN201410062663 A CN 201410062663A CN 103821364 B CN103821364 B CN 103821364B
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Abstract
The invention provides a kind of construction method of reinforced concrete water pond, involved pool wall of pool thickness is 300 ~ 500mm, pond base thickness degree is 300 ~ 500mm, this construction method comprises basement process, pond reinforcement installation, pond model sheetinstallat, pond concreting, ater-casting is built and pond examination water, pond model sheetinstallat comprises pond soffit formwork and installs, pond wall moulding board is installed and steel plate for sealing water place, ater-casting model sheetinstallat at the bottom of pond, wherein, at the bottom of pond, ater-casting steel plate for sealing water place model sheetinstallat comprises: the centre position below horizontal steel plate for sealing water at the bottom of pond, adopting with the concreting width of pond body ad eundem is the concrete belt of 100mm, template using this concrete belt as aforementioned levels steel plate for sealing water bottom, upper mould is installed in centre position above aforementioned levels steel plate for sealing water, and upper mould adopts bamboo slab rubber to arrange according to rebar spacing fluting, and upper mould added lead thick stick, then adopt wood to support and be fixed.Construction method of the present invention can solve the constructional difficulties problem of ater-casting.
Description
Technical field
The present invention relates to technical field of building construction, in particular to a kind of construction method of reinforced concrete water pond.
Background technology
Reinforced concrete water pond is as a kind of process equipment in Sewage Treatment Project, its raw material sources is extensive, be easy to the quality controlling product, convenient formation, product after shaping does not need too many maintenance, maintenance substantially, and fabrication cycle is short, and volume is large, the project of carrying out extensive water treatment is needed for townsfolk's sewerage treatment, chemical industry sewerage treatment and other industry sewerage treatment etc., has application prospect very widely.All applicable for the identical or similar pond in Sewage Treatment Project.
Large-scale reinforced concrete tank planar dimension is comparatively large, and pool wall thickness is generally 300 ~ 500mm, when pond body is longer, need arrange ater-casting according to design and code requirement, increase " sliding layer ", to alleviate the stress that concrete produces, avoids producing stress cracking.In general, at the bottom of the pond in pond and the concrete of pool wall ater-casting, need be left to main body construction and complete after one month and can build, but the reinforcing bar of base plate is overall, continuous print, can not disconnect herein, this has manufactured very large trouble just to template construction herein.At mounting base wooden form and after concreting completes, wooden form, because of the reason such as reinforcing bar is too close, cannot remove taking-up at all.
Summary of the invention
In view of the deficiencies in the prior art or defect, the present invention aims to provide a kind of construction method of reinforced concrete water pond, solve above-mentioned reinforced concrete water pond construct time ater-casting build problem.
Above-mentioned purpose of the present invention is realized by the technical characteristic of independent claims, and dependent claims develops the technical characteristic of independent claims with alternative or favourable mode.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is as follows:
A kind of construction method of reinforced concrete water pond, involved pool wall of pool thickness is 300 ~ 500mm, pond base thickness degree is 300 ~ 500mm, it is characterized in that, this construction method comprises basement process, pond reinforcement installation, pond model sheetinstallat, pond concreting, ater-casting is built and pond examination water, seam building for ater-casting is all established at the bottom of pond and on pool wall when aforementioned pond model sheetinstallat and pond concreting, in the both sides of all horizontal construction joints and position, ater-casting, all steel plate for sealing water is set, aforementioned pond model sheetinstallat comprises pond soffit formwork and installs, pond wall moulding board is installed and steel plate for sealing water place, ater-casting model sheetinstallat at the bottom of pond, wherein, at the bottom of aforementioned pond, ater-casting steel plate for sealing water place model sheetinstallat comprises the following steps:
Centre position below horizontal steel plate for sealing water at the bottom of pond, adopting with the concreting width of pond body ad eundem is the concrete belt of 100mm, the template using this concrete belt as aforementioned levels steel plate for sealing water bottom;
Upper mould is installed in centre position above aforementioned levels steel plate for sealing water, and upper mould adopts bamboo slab rubber to arrange according to rebar spacing fluting; And
Upper mould is added and leads thick stick, then adopt wood to support and be fixed.
In further embodiment, aforementioned basement process comprises: adopt C25 rubble concrete placement layer by layer, the thickness of every layer is less than or equal to 80cm, and rubble incorporation controls within 50%.
In further embodiment, aforementioned pond reinforcement installation comprises the reinforcement installation of pond baseboard and pool wall, adopts double-layer double-direction structure, at the construction field (site) blanking processing and fabricating and on bed course colligation install, its realization comprises the following steps:
Before baseplate reinforcing bar is installed, bed course or bed die draw spaced lines, according to chalk line discharge reinforcing bar, steel bar stress staggers overlap joint, lap joint is less than or equal to 25% in same cross section, and it is long that horizontal reinforcement processing first paragraph is respectively 4.5m, 6m, 7.5m, 9.0m, and all the other each section all long by scale 9.0m; After bottom layer of the reinforcing steel colligation completes, the cement mortar bedding block thick with 35mm gets reinforcement cover discard, arranges a cushion block, arrange in blossom type at interval of 1 ~ 1.5m; According to the thickness of base plate, the bearing rod of fabrication and installation base plate top reinforcement, the number of bearing rod is by 1/m
2arrange, bearing rod is made for a few font or split heads type, is weldingly fixed on base plate bottom layer reinforcing bar;
After baseplate reinforcing bar installation, inspection are checked, vertical reinforcement inside and outside pool wall is installed: the axis first marking pool wall on base plate top reinforcement, and press pool wall wide under base plate colligation two row of horizontal reinforcing bar, rule as the control line of pool wall stud, drag pin and the baseplate reinforcing bar of stud are fastened, and with the horizontal reinforcement colligation of arranging on base plate; After stud colligation completes, hang straight rear fixation at big angle, flat spaced lines that stud is struck, then colligation horizontal reinforcement; Undertaken by line during reinforcing bar binding, pool wall reinforcing bar pointwise colligation, colligation lacing wire or brace rod between double reinforcing bar, to control in pool wall the spacing of outside reinforcing bar, its in length and breadth spacing be 600mm, reinforcing bar crust colligation concrete protective layer pad;
The colligation of buttress reinforcing bar, its method is identical with the binding method of aforementioned pool wall stud, and its topping cushion block is positioned at the outside of the main muscle of buttress reinforcing bar, and spacing is 1.0m;
To encorbelment the colligation of walkway board reinforcing bar: before colligation, remove the foreign material in template, in template, main muscle, distribution bar spacing is finished again with chalk, again by the spacing finished, first place muscle of being advocated, rear placement distribution bar, built-in fitting are to coordinate installation, and the colligation of walkway board reinforcing bar of encorbelmenting adopts along button or Eight characters button, the whole colligation of joining of each muscle, adds split heads under reinforcing bar;
Pool wall perforate, service sleeve place, when the specification as box out or pipe laying is less than 300mm, reinforcing bar, when limit, hole is walked around, does not separately establish additional bar; 300mm is greater than for box out or built-in pipe size, or when working drawing has a design, outside hole, pipe, sets up additional bar.
In further embodiment, aforementioned pond soffit formwork has been installed as support formwork way, and adopt steel form and wood to support and realize, it comprises the following steps:
Adopt two pieces of steel form levels of 200mm and 300mm to piece together pond baseboard peripheral circumferential template, the additional vertical shelves of steel form and diagonal brace, diagonal brace is fixed on to be squeezed on the timber of underground;
Height pool wall turning over segment template gets 500mm, the composite wooden template of unified specification is made with bamboo slab rubber and the lumps of wood, before this composite wooden template is installed, first weld horizontal structure muscle on pool wall stud, spacing is 1.0m, a bar dowel of limiting in end, and then is stood on by composite wooden template on horizontal tectonics muscle, the oblique stopper in composite wooden template bottom adjusts, locates, its top 8# galvanized wire and inner side template drawknot.
In further embodiment, aforementioned pond wall moulding board has been installed as support formwork way, adopts combined steel formwork and wooden form, cooperation bracing members to realize, the installation of comprise side template, founding shelves, leading thick stick, diagonal brace, wherein:
Side template adopts combined steel formwork, and the thin sponge strip liner of the seam double-sided belt glue between plate and plate, with mortar leakage prevention; Stupefied and the diagonal brace of side template arranged outside steel, between pool wall inner and outer template, be provided with the split bolt of full weld seal ring at a certain distance, split bolt adds plug, enough leads thick stick suitable for reading setting of side template, to ensure after casting and compacting of concrete, the accuracy of side template sectional dimension;
Pool wall inner and outer template is installed simultaneously, the side template combined steel level splicing of rectangle pool wall, and the side template combined steel of round pool wall vertically splices; According to sideline first vertical side template, prop up with support temporarily, then correct the vertical of side template with plumb bob, then fix steel stupefied, then with diagonal brace with support fixing;
For ensureing that installing split bolt does not destroy steel form, establish 50 × 50mm lumps of wood every two pieces of steel forms, for fixing split bolt, split bolt is welded with seal ring, seal ring full weld, number of rings is determined according to pool wall thickness;
The plug of split bolt: during formwork, inside template, bolt both sides add rubber plug, after form removal, are gone to use expansive cement mortar blocking tight again by bolt along plano-concave hole undercut;
All pool wall horizontal construction joints are retained in apart from base plate 50cm position, and all adopt the mode adding steel plate for sealing water, steel plate for sealing water thickness is 3mm, the every limit 250mm in horizontal construction joint both sides, and makes swallow-tail form; Steel plate for sealing water bar dowel is fixedly welded on pool wall stud, for preventing external force from causing displacement distortion, fixes in bilateral symmetry; The connection of steel plate for sealing water takes overlap joint and T connector, joint full weld;
Pool wall ater-casting place model sheetinstallat is identical with ater-casting upper mould at the bottom of pond, when pool wall concreting, for preventing cement paste from bleeding in ater-casting along poorly sealed real part, pours into the yellow ground exceeding pool wall 2/3 height in ater-casting;
Pond walkway board along the elongated layout in pool wall of pool outside suitable for reading is cantilevered structure, and its width is 1.2m, and thickness is 100-150mm, φ 48*3.5mm steel pipe scaffolding is adopted to set up console mode falsework, horizontal spacing 1.5m is indulged in vertical rod, step pitch 1.8m, and outside longitudinally arranges one vertical support every 6m; Inner side vertical rod is supported on pond baseboard, and outside vertical rod is supported on foundation ditch original soil; Before vertical rod is set up, leveling compacting foundation ditch toe, absolute altitude is consistent with pond baseboard upper surface, and the thick scaffold floor of elongated laying 50mm; Longitudinally establish elongated bar of sweeping the floor, apart from supporting surface 200mm; Finally absolute altitude is carried out to leger, absolute altitude and the thickness of foundation walkway board control, close paving 40 × 90mm flitch on leger, spacing 200mm, as walkway board soffit formwork back cord, then completely spreads the thick bamboo slab rubber of 16mm on flitch, with flitch stickfast, plate seam pastes adhesive tape, does side form, with the stickfast of back cord flitch outside walkway board with flitch;
The interior tank encorbelmented in pool wall top, tank soffit formwork is installed identical with the method for above-mentioned pond walkway board of encorbelmenting, and flume wall model sheetinstallat is identical with the method for pool wall turning over segment template.
In further embodiment, the concreting of aforementioned pond comprises pond base concrete and builds and casting pond wall concrete, at the bottom of pond and pool wall build at twice, wherein:
Underplate concrete build employing pumping, distributing device enters mould, build order be: first base plate one-time-concreting, and then pool wall turns over part build;
Casting pond wall concrete adopts Site station concentrated compactness, and pumping distributing device cloth enters mould, at least divides two layers to carry out concreting in the height direction.
In further embodiment, aforementioned ater-casting is built to comprise and is adopted the concrete of expansive concrete or a raising strength grade to build, and wherein the volume of the addition ratio pond body of expansion agent increases by 50%.
From the above technical solution of the present invention shows that, the construction method of reinforced concrete water pond provided by the present invention, it solves ater-casting in prior art and builds problem, and especially after ater-casting pouring construction completes, wooden form is not easy the problem taken out.Utilize construction method provided by the invention, can the construction period be shortened, save artificial and material, and reduce the labour intensity of workman, both reduced engineering cost, shorten the engineering construction duration again, significant economic benefit can be brought, there is promotional value.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the construction method of an embodiment of the present invention reinforced concrete water pond.
Fig. 2 is pond soffit formwork scheme of installation.
Fig. 3 is split bolt scheme of installation.
Fig. 4 is ater-casting steel plate for sealing water place model sheetinstallat schematic diagram at the bottom of pond.
Detailed description of the invention
In order to more understand technology contents of the present invention, institute's accompanying drawings is coordinated to be described as follows especially exemplified by specific embodiment.
Figure 1 shows that the realization flow of the construction method of an embodiment of the present invention reinforced concrete water pond, wherein, a kind of construction method of reinforced concrete water pond, involved pool wall of pool thickness is 300 ~ 500mm, pond base thickness degree is 300 ~ 500mm, this construction method comprises basement process, pond reinforcement installation, pond model sheetinstallat, pond concreting, ater-casting is built and pond examination water, seam building for ater-casting is all established at the bottom of pond and on pool wall when aforementioned pond model sheetinstallat and pond concreting, in the both sides of all horizontal construction joints and position, ater-casting, all steel plate for sealing water is set, pond model sheetinstallat comprises pond soffit formwork and installs, pond wall moulding board is installed and steel plate for sealing water place, ater-casting model sheetinstallat at the bottom of pond, pond concreting comprises pond base concrete and builds and casting pond wall concrete, after concreting completes, need to carry out maintenance (being generally no less than 14 days).After maintenance completes, carry out the construction of ater-casting, namely build, after post empiricism completes, then enter to try water, object is inspection structural safety, checks construction quality.
Due to the base plate in pond and the concrete of pool wall ater-casting, need to be left to main body construction complete after 14 days to about 1 month, just can construction casting, but the reinforcing bar of base plate is overall, continuous print, can not disconnect herein, this has manufactured very large trouble just to template construction herein.In the present embodiment, the both sides of all horizontal construction joints and position, ater-casting all arrange steel plate for sealing water, the steel plate for sealing water of wide 500mm, thickness 3mm is such as set, up and down wooden form is installed at steel plate for sealing water, after concreting completes, wooden form under steel plate for sealing water, because of the reason such as reinforcing bar is too close, cannot remove taking-up at all.Therefore in an embodiment, as one of improvement, at the bottom of aforementioned pond, ater-casting steel plate for sealing water place model sheetinstallat comprises the following steps:
Centre position below horizontal steel plate for sealing water at the bottom of pond, adopting with the concreting width of pond body ad eundem is the concrete belt of 100mm, the template using this concrete belt as aforementioned levels steel plate for sealing water bottom;
Upper mould is installed in centre position above aforementioned levels steel plate for sealing water, and upper mould adopts bamboo slab rubber to arrange according to rebar spacing fluting; And
Upper mould is added and leads thick stick, then adopt wood to support and be fixed.
Below for the construction of the large-scale reinforced concrete tank of certain sewerage treatment, describe the realization of the construction method of reinforced concrete water pond of the present invention in detail.Exemplarily property ground, the thick 500mm of base plate at the bottom of the pond of this reinforced concrete water pond, the thick 300mm of pool wall, pool wall puts greatly the thick 450mm of angular region base plate, the thick 450mm of buttress scope pool wall, the long 68m in pond, wide 60m, dark 6.0m are in length and breadth to respectively establishing 3, the wide ater-casting of the 800mm of through base plate and pool wall.
One, basement process
Basement process adopts C25 rubble concrete placement layer by layer, has ensured the resistance to overturning of pond ground.The thickness of every layer is less than or equal to 80cm, and rubble incorporation controls within 50%.Rubble maximum area is less than 40cm.Concrete preferably adopts pumping to build, every layer of layering vibration compacting.
Two, pond reinforcement installation
In the present embodiment, pond reinforcement installation comprises the reinforcement installation of pond baseboard and pool wall, adopts double-layer double-direction structure, blanking processing and fabricating at the construction field (site), and colligation is installed on bed course, and its realization comprises the following steps:
Before baseplate reinforcing bar is installed, bed course or bed die draw spaced lines, according to chalk line discharge reinforcing bar, steel bar stress staggers overlap joint, lap joint is less than or equal to 25% in same cross section, it is long that horizontal reinforcement processing first paragraph is respectively 4.5m, 6m, 7.5m, 9.0m, and all the other each section all by scale 9.0m long (for the installation of circular arc base plate radioactivity reinforcing bar, its spacing strictly should control by the radius of designing requirement); After bottom layer of the reinforcing steel colligation completes, the cement mortar bedding block thick with 35mm gets reinforcement cover discard, arranges a cushion block, arrange in blossom type at interval of 1 ~ 1.5m; According to the thickness of base plate, the bearing rod of fabrication and installation base plate top reinforcement, the number of bearing rod is by 1/m
2arrange, preferably its specification grade less of base plate top reinforcement, bearing rod is made for a few font or split heads type, is weldingly fixed on base plate bottom layer reinforcing bar;
After baseplate reinforcing bar installation, inspection are checked, vertical reinforcement inside and outside pool wall is installed: the axis first marking pool wall on base plate top reinforcement, and press pool wall wide under base plate colligation two row of horizontal reinforcing bar, rule as the control line of pool wall stud, drag pin and the baseplate reinforcing bar of stud are fastened, and with the horizontal reinforcement colligation of arranging on base plate; After stud colligation completes, hang straight rear fixation at big angle, flat spaced lines that stud is struck, then colligation horizontal reinforcement; Undertaken (checking the position that colligation is good at any time by line during reinforcing bar binding, check verticality and levelness and the size of space in length and breadth), pool wall reinforcing bar pointwise colligation, colligation lacing wire or brace rod between double reinforcing bar, to control the spacing of outside reinforcing bar in pool wall, its in length and breadth spacing be 600mm, reinforcing bar crust colligation concrete protective layer pad;
The colligation of buttress reinforcing bar, its method is identical with the binding method of aforementioned pool wall stud, and its topping cushion block is positioned at the outside of the main muscle of buttress reinforcing bar, and spacing is 1.0m, to ensure the correct of protective layer thickness;
To encorbelment the colligation of walkway board reinforcing bar: before colligation, remove the foreign material (as wood shavings, wood fragments etc.) in template, in template, main muscle, distribution bar spacing is finished again with chalk, again by the spacing finished, first place muscle of being advocated, rear placement distribution bar, built-in fitting are to coordinate installation, encorbelment walkway board reinforcing bar colligation adopt along button or Eight characters button, the whole colligation of joining of each muscle, adds split heads under reinforcing bar, to guarantee the position of upper reinforcement;
Pool wall perforate, service sleeve place, when the specification as box out or pipe laying is less than 300mm, reinforcing bar, when limit, hole is walked around, does not separately establish additional bar; 300mm is greater than for box out or built-in pipe size, or when working drawing has a design, outside hole, pipe, sets up additional bar.
The construction in pond, the thin end; reinforcing bar binding is also crucial; therefore, when assembling reinforcement, answer the diameter of detailed inspection reinforcing bar, spacing, position, lap length, the spacing of levels reinforcing bar, the position of topping and sleeve pipe embedded part and quantity, the regulation of designing requirement and job specfication all should be met.
Three, pond model sheetinstallat
Pond model sheetinstallat comprises pond soffit formwork installation, pond wall moulding board is installed and steel plate for sealing water place, ater-casting model sheetinstallat at the bottom of pond.
3.1 pond soffit formworks are installed
With reference to the pond soffit formwork installation drawing shown in figure 2, in Fig. 2,1 represents pond baseboard, and 2 represent horizontal tectonics muscle, and 3 represent composite wooden template, and 4 represent vertical steel plate for sealing water, and 5 represent pool wall stud, and 6 represent spacing bar dowel, and 7 represent steel form, vertical shelves and diagonal brace combination.Wherein pond soffit formwork has been installed as support formwork way, and adopt steel form and wood to support and realize, it comprises the following steps:
Adopt two pieces of steel form levels of 200mm and 300mm to piece together pond baseboard peripheral circumferential template, the additional vertical shelves of steel form and diagonal brace, diagonal brace is fixed on to be squeezed on the timber of underground;
Height pool wall turning over segment template gets 500mm, the composite wooden template of unified specification is made with bamboo slab rubber and the lumps of wood, before this composite wooden template is installed, first weld horizontal structure muscle on pool wall stud, spacing is 1.0m, a bar dowel of limiting in end, and then is stood on by composite wooden template on horizontal tectonics muscle, the oblique stopper in composite wooden template bottom adjusts, locates, its top 8# galvanized wire and inner side template drawknot.
3.2 pond wall moulding boards are installed
With reference to the split bolt installation drawing shown in figure 3, in Fig. 3,11 represent steel form, and 12 represent the lumps of wood, and 13 represent vertical shelves, and thick stick is led in 14 expressions, and 15 represent split bolt, and 16 represent seal ring, and 10 represent pool wall of pool.Wherein, pond wall moulding board has been installed as support formwork way, adopts combined steel formwork and wooden form, cooperation bracing members to realize, the installation of comprise side template, founding shelves, leading thick stick, diagonal brace, wherein:
Side template adopts combined steel formwork, and the thin sponge strip liner of the seam double-sided belt glue between plate and plate, with mortar leakage prevention; Stupefied and the diagonal brace of side template arranged outside steel, between pool wall inner and outer template, be provided with the split bolt of full weld seal ring at a certain distance, split bolt adds plug, enough leads thick stick suitable for reading setting of side template, to ensure after casting and compacting of concrete, the accuracy of side template sectional dimension;
Pool wall inner and outer template is installed simultaneously, the side template combined steel level splicing of rectangle pool wall, and the side template combined steel of round pool wall vertically splices; According to sideline first vertical side template, prop up with support temporarily, then correct the vertical of side template with plumb bob, then fix steel stupefied, then with diagonal brace with support fixing;
For ensureing that installing split bolt does not destroy steel form, establish 50 × 50mm lumps of wood every two pieces of steel forms, for fixing split bolt, split bolt is welded with seal ring, seal ring full weld, number of rings is determined according to pool wall thickness;
The plug of split bolt: during formwork, inside template, bolt both sides add rubber plug, after form removal, are gone to use expansive cement mortar blocking tight again by bolt along plano-concave hole undercut;
All pool wall horizontal construction joints are retained in apart from base plate 50cm position, and all adopt the mode adding steel plate for sealing water, steel plate for sealing water thickness is 3mm, the every limit 250mm in horizontal construction joint both sides, and makes swallow-tail form; Steel plate for sealing water bar dowel is fixedly welded on pool wall stud, for preventing external force from causing displacement distortion, fixes in bilateral symmetry; The connection of steel plate for sealing water takes overlap joint and T connector, joint full weld;
Pool wall ater-casting place model sheetinstallat is identical with ater-casting upper mould at the bottom of pond, when pool wall concreting, for preventing cement paste from bleeding in ater-casting along poorly sealed real part, pours into the yellow ground exceeding pool wall 2/3 height in ater-casting;
Pond walkway board along the elongated layout in pool wall of pool outside suitable for reading is cantilevered structure, and its width is 1.2m, and thickness is 100-150mm, φ 48*3.5mm steel pipe scaffolding is adopted to set up console mode falsework, horizontal spacing 1.5m is indulged in vertical rod, step pitch 1.8m, and outside longitudinally arranges one vertical support every 6m; Inner side vertical rod is supported on pond baseboard, and outside vertical rod is supported on foundation ditch original soil; Before vertical rod is set up, leveling compacting foundation ditch toe, absolute altitude is consistent with pond baseboard upper surface, and the thick scaffold floor of elongated laying 50mm; Longitudinally establish elongated bar of sweeping the floor, apart from supporting surface 200mm; Finally absolute altitude is carried out to leger, absolute altitude and the thickness of foundation walkway board control, close paving 40 × 90mm flitch on leger, spacing 200mm, as walkway board soffit formwork back cord, then completely spreads the thick bamboo slab rubber of 16mm on flitch, with flitch stickfast, plate seam pastes adhesive tape, does side form, with the stickfast of back cord flitch outside walkway board with flitch;
The interior tank encorbelmented in pool wall top, tank soffit formwork is installed identical with the method for above-mentioned pond walkway board of encorbelmenting, and flume wall model sheetinstallat is identical with the method for pool wall turning over segment template.
Walkway board bed die can should be removed when concrete reaches design strength 100%.
3.3 steel plate for sealing water place, ater-casting at the bottom of pond model sheetinstallat
With reference to steel plate for sealing water place, ater-casting model sheetinstallat schematic diagram at the bottom of the pond shown in figure 4, in Fig. 4,31 represent horizontal steel plate for sealing water, 32 represent concrete belt (bottom template), and 33 represent upper mould, and 34 represent that wood supports, 35 represent position, ater-casting, and 1 represents pond baseboard.Wherein, at the bottom of pond, ater-casting steel plate for sealing water place model sheetinstallat comprises the following steps:
Centre position below horizontal steel plate for sealing water at the bottom of pond, adopting with the concreting width of pond body ad eundem is the concrete belt of 100mm, the template using this concrete belt as aforementioned levels steel plate for sealing water bottom;
Upper mould is installed in centre position above aforementioned levels steel plate for sealing water, and upper mould adopts bamboo slab rubber to arrange according to rebar spacing fluting; And,
Upper mould is added and leads thick stick, then adopt wood to support and be fixed.
Four, pond concreting
The structural safety in pond relies on reinforcing bar and concrete co-operation to realize, realize co-operation, must have good concrete strength as guarantee, and concrete construction quality will determine its final strength, for pond, the large-scale thin end, more seem most important.
In the present embodiment, pond concreting comprises pond base concrete and builds and casting pond wall concrete, at the bottom of pond and pool wall build at twice, the concrete that pond is built all has certain classification of waterproof, overall density is higher, and concrete once burns the amount of building greatly, therefore in construction, continuous placing is answered to accomplish without any letup, to guarantee the concrete quality in whole pond.
Underplate concrete build employing pumping, distributing device enters mould, build order be: first base plate one-time-concreting, and then pool wall turns over part build.
Pond base concrete should complete the checking of the operations such as reinforcing bar is hidden, template, installation of embedded parts, checking and accepting before building, erection concrete conveying pipe and independent support.According to design elevation, elevation is introduced in base plate, adopt band iron to be welded on baseplate reinforcing bar and make control cincture, control cincture is spaced apart 2-3 rice, to ensure the levelness of pond baseboard.
Strictly should control stoichiometry during concrete mixing, control the volume of concrete water/binder ratio, slump, mixing time, sandstone mud content and Admixture well, workability of guaranteeing supply is good, greater homogeneity, concrete mix consistent continuously.
Concrete adopts poker vibrator to make firm by ramming, and a delivery pump configures 3 vibrators, carries out respectively catching up with material and vibrating.Strike off after underplate concrete vibration compacting, after concrete initial set, take out control cincture band iron, magma fills.Pool wall turning over part concrete carrying out cloth to while base plate cloth, simply vibrating, when water initial set received by concrete, manually by turn over part bed die under the concrete extruded plough under in mould, more careful vibration compacting.
Eminence after the appropriate to the occasion first lower of concreting, first behind middle part, two ends are carried out continuously, avoid occurring cold seam.Enough time of vibration should be guaranteed, gas unnecessary in concrete and moisture are discharged, should drain in time the bleeding that concrete surface occurs, pond basal surface answers compacting troweling before concrete initial set, thus obtain that intensity is high, crack resistance good, the concrete of the outer light of interior reality.
Casting pond wall concrete adopts Site station concentrated compactness, and pumping distributing device cloth enters mould, at least divides two layers to carry out concreting in the height direction.
Preferably, before casting pond wall concrete, first by the concrete surface dabbing at constuction joint place, floating grain and foreign material should be removed, rinse well with water, keep moistening.The cement mortar of the thick 20 ~ 25mm of layer overlay again, the cement-sand ratio of the material that cement mortar is used should be identical with the cement-sand ratio of concrete material.
The height of pool wall is generally 4 ~ 6m, after turning over the height of part, also has 3.5 ~ 5.5m, at least divides two layers to carry out concreting on when deducting bottom slab concreting.First time cloth height about 2 ~ 2.5m, add under cloth mouth and gang up or chute, poker vibrator is made firm by ramming, and when concrete water suction initial set, second time concrete enters mould and pushes up design elevation to pond.Second time concrete enters mould when vibrating, and strictly controls vibrating head insertion depth, general control in insertion first floor concrete 5 ~ 10 centimetres, the concrete that must not build disturbance first time.When every platform pumping of concrete is built, should configure and be not less than 3 vibrators and join a regular shift or class and vibrate, two vibrators plug and pound when concrete enters mould catches up with slurry, and a vibrator evenly vibrates subsequently, in case leak-stopping shakes.Vibrating head should follow fast principle of inserting slow group when vibrating, making firm by ramming particularly to pool wall, and the height entering mould due to concrete is large, and bubble is not easily overflowed, and note vibrating time.
When pool wall having the sleeve pipe of pre-buried Large Diameter Pipeline or the larger metal sheet built-in fitting of area, offer bottom Ying Qi and build hole of vibrating, in order to building, be vented and vibrating, should clear up in time after vibration compacting, be vibrated in hole in shutoff.
After concreting completes, need maintenance be carried out, base plate completely spreads piece of sack water seasoning, while construction pool wall, should notice that maintenance can not disconnect, keep moistening.After casting pond wall concrete is complete, at temperature under higher or drying regime, form removal eraly can cause concrete shrinkage to produce crack; affect the durability of structure; therefore, should continue water seasoning, the concrete curing time of base plate, pool wall and ater-casting should be no less than 14 days.
Five, ater-casting is built
Ater-casting width generally gets 1.0 ~ 1.2m, and both sides concrete cross section is made tongue and groove or added various waterstop, and ater-casting concrete is separately built but reinforcing bar does not disconnect.Namely at the bottom of pond ater-casting must through whole pond, and, pool wall, top board all establish seam building for ater-casting.
Ater-casting is built to comprise and is adopted the concrete of expansive concrete (having the concrete of micro-expansibility) or a raising strength grade to build, and wherein the volume of the addition ratio pond body of expansion agent increases by 50%.
Six, water is tried
Examination water process one grade can be carried out after (ater-casting is built rear) is all constructed in pond, and object is inspection structural safety, checks construction quality.
Examination water conservancy project in the present embodiment is done to adopt conventional means.Should first closed conduct hole before examination water, pool wall accurately draws the control line of each water inlet height, needs the leak stopping spirit of some simultaneously.
Discharge water into pond by Chi Ding during examination water, intake several times for general point, as the case may be, control height of at every turn intaking.Carry out visual inspection up and down from surrounding, make a record, as without special circumstances, can continue to pour water, to water storage design elevation.As there is leak source, with leak stopping spirit shutoff, after examination water terminates to discharge water, then process inside pool wall.Sedimentation observation will be carried out simultaneously.
After design elevation of pouring water, stop 1 day, carry out visual inspection, and carry out water surface elevation mark, Continuous Observation 7 days, external surface leakproof and water level are qualified without obvious landing side.
Although the present invention with preferred embodiment disclose as above, so itself and be not used to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (7)
1. the construction method of a reinforced concrete water pond, involved pool wall of pool thickness is 300 ~ 500mm, pond base thickness degree is 300 ~ 500mm, it is characterized in that, this construction method comprises basement process, pond reinforcement installation, pond model sheetinstallat, pond concreting, ater-casting is built and pond examination water, seam building for ater-casting is all established at the bottom of pond and on pool wall when aforementioned pond model sheetinstallat and pond concreting, in the both sides of the both sides of all horizontal construction joints and position, ater-casting, all steel plate for sealing water is set, aforementioned pond model sheetinstallat comprises pond soffit formwork and installs, pond wall moulding board is installed and steel plate for sealing water place, ater-casting model sheetinstallat at the bottom of pond, wherein, at the bottom of aforementioned pond, ater-casting steel plate for sealing water place model sheetinstallat comprises the following steps:
Centre position below horizontal steel plate for sealing water at the bottom of pond, adopting with the concreting width of pond body ad eundem is the concrete belt of 100mm, the template using this concrete belt as aforementioned levels steel plate for sealing water bottom;
Upper mould is installed in centre position above aforementioned levels steel plate for sealing water, and upper mould adopts bamboo slab rubber to arrange according to rebar spacing fluting; And
Upper mould is added and leads thick stick, then adopt wood to support and be fixed.
2. the construction method of reinforced concrete water pond according to claim 1, is characterized in that, aforementioned basement process comprises: adopt C25 rubble concrete placement layer by layer, the thickness of every layer is less than or equal to 80cm, and rubble incorporation is within 50%.
3. the construction method of reinforced concrete water pond according to claim 1, it is characterized in that, aforementioned pond reinforcement installation comprises the reinforcement installation of pond baseboard and pool wall, adopt double-layer double-direction structure, at the construction field (site) blanking processing and fabricating and on bed course colligation install, its realization comprises the following steps:
Before baseplate reinforcing bar is installed, bed course or bed die draw spaced lines, according to chalk line discharge reinforcing bar, steel bar stress staggers overlap joint, lap joint is less than or equal to 25% in same cross section, and it is long that horizontal reinforcement processing first paragraph is respectively 4.5m, 6m, 7.5m, 9.0m, and all the other each section all long by scale 9.0m; After bottom layer of the reinforcing steel colligation completes, the cement mortar bedding block thick with 35mm gets reinforcement cover discard, arranges a cushion block, arrange in blossom type at interval of 1 ~ 1.5m; According to the thickness of base plate, the bearing rod of fabrication and installation base plate top reinforcement, the number of bearing rod is by 1/m
2arrange, bearing rod is made for a few font or split heads type, is weldingly fixed on base plate bottom layer reinforcing bar;
After baseplate reinforcing bar installation, inspection are checked, vertical reinforcement inside and outside pool wall is installed: the axis first marking pool wall on base plate top reinforcement, and press pool wall wide under base plate colligation two row of horizontal reinforcing bar, rule as the control line of pool wall stud, drag pin and the baseplate reinforcing bar of stud are fastened, and with the horizontal reinforcement colligation of arranging on base plate; After stud colligation completes, hang straight rear fixation at big angle, flat spaced lines that stud is struck, then colligation horizontal reinforcement; Undertaken by line during reinforcing bar binding, pool wall reinforcing bar pointwise colligation, colligation lacing wire or brace rod between double reinforcing bar, to control in pool wall the spacing of outside reinforcing bar, its in length and breadth spacing be 600mm, reinforcing bar crust colligation concrete protective layer pad;
The colligation of buttress reinforcing bar, its method is identical with the binding method of aforementioned pool wall stud, and its topping cushion block is positioned at the outside of the main muscle of buttress reinforcing bar, and spacing is 1.0m;
To encorbelment the colligation of walkway board reinforcing bar: before colligation, remove the foreign material in template, in template, main muscle, distribution bar spacing is finished again with chalk, again by the spacing finished, first place main muscle, rear placement distribution bar, built-in fitting are to coordinate installation, and the colligation of walkway board reinforcing bar of encorbelmenting adopts along button or Eight characters button, the whole colligation of joining of each muscle, adds split heads under reinforcing bar;
Pool wall perforate, service sleeve place, when the specification as box out or pipe laying is less than 300mm, reinforcing bar, when limit, hole is walked around, does not separately establish additional bar; 300mm is greater than for box out or built-in pipe size, or when working drawing has a design, outside hole, pipe, sets up additional bar.
4. the construction method of reinforced concrete water pond according to claim 3, is characterized in that, aforementioned pond soffit formwork has been installed as support formwork way, and adopt steel form and wood to support and realize, it comprises the following steps:
Adopt two pieces of steel form levels of 200mm and 300mm to piece together pond baseboard peripheral circumferential template, the additional vertical shelves of steel form and diagonal brace, diagonal brace is fixed on to be squeezed on the timber of underground;
Height pool wall turning over segment template gets 500mm, the composite wooden template of unified specification is made with bamboo slab rubber and the lumps of wood, before this composite wooden template is installed, first weld horizontal structure muscle on pool wall stud, spacing is 1.0m, a bar dowel of limiting in end, and then is stood on by composite wooden template on horizontal tectonics muscle, the oblique stopper in composite wooden template bottom adjusts, locates, its top 8# galvanized wire and inner side template drawknot.
5. the construction method of reinforced concrete water pond according to claim 4, it is characterized in that, aforementioned pond wall moulding board has been installed as support formwork way, adopts combined steel formwork and wooden form, cooperation bracing members to realize, the installation of comprise side template, founding shelves, leading thick stick, diagonal brace, wherein:
Side template adopts combined steel formwork, and the thin sponge strip liner of the seam double-sided belt glue between plate and plate, with mortar leakage prevention; Stupefied and the diagonal brace of side template arranged outside steel, the split bolt of full weld seal ring is provided with at a certain distance between pool wall inner and outer template, split bolt adds plug, enough leads thick stick, to ensure the accuracy of template sectional dimension on rear side of casting and compacting of concrete suitable for reading setting of side template;
Pool wall inner and outer template is installed simultaneously, the side template combined steel level splicing of rectangle pool wall, and the side template combined steel of round pool wall vertically splices; According to sideline first vertical side template, prop up with support temporarily, then correct the vertical of side template with plumb bob, then fix steel stupefied, then with diagonal brace with support fixing;
Establish 50 × 50mm lumps of wood every two pieces of steel forms, for fixing split bolt, the number of rings of the seal ring on split bolt is determined according to pool wall thickness;
The plug of split bolt: during formwork, inside template, bolt both sides add rubber plug, after form removal, are gone to use expansive cement mortar blocking tight again by bolt along plano-concave hole undercut;
All pool wall horizontal construction joints are retained in apart from base plate 50cm position, and all adopt the mode adding steel plate for sealing water, steel plate for sealing water thickness is 3mm, the every limit 250mm in horizontal construction joint both sides, and makes swallow-tail form; Steel plate for sealing water bar dowel is fixedly welded on pool wall stud, for preventing external force from causing displacement distortion, fixes in bilateral symmetry; The connection of steel plate for sealing water takes overlap joint and T connector, joint full weld;
Pool wall ater-casting place model sheetinstallat is identical with ater-casting upper mould at the bottom of pond, when pool wall concreting, for preventing cement paste from bleeding in ater-casting along poorly sealed real part, pours into the yellow ground exceeding pool wall 2/3 height in ater-casting;
Pond walkway board along the elongated layout in pool wall of pool outside suitable for reading is cantilevered structure, and its width is 1.2m, and thickness is 100-150mm, φ 48*3.5mm steel pipe scaffolding is adopted to set up console mode falsework, horizontal spacing 1.5m is indulged in vertical rod, step pitch 1.8m, and outside longitudinally arranges one vertical support every 6m; Inner side vertical rod is supported on pond baseboard, and outside vertical rod is supported on foundation ditch original soil; Before vertical rod is set up, leveling compacting foundation ditch toe, absolute altitude is consistent with pond baseboard upper surface, and the thick scaffold floor of elongated laying 50mm; Longitudinally establish elongated bar of sweeping the floor, apart from supporting surface 200mm; Finally absolute altitude is carried out to leger, absolute altitude and the thickness of foundation walkway board control, close paving 40 × 90mm lumps of wood on leger, spacing 200mm, as walkway board soffit formwork back cord, then completely spreads the thick bamboo slab rubber of 16mm on the lumps of wood, with lumps of wood stickfast, plate seam pastes adhesive tape, does side form, with the stickfast of the back cord lumps of wood outside walkway board with the lumps of wood;
The interior tank encorbelmented in pool wall top, tank soffit formwork is installed identical with the method for above-mentioned pond walkway board of encorbelmenting, and flume wall model sheetinstallat is identical with the method for pool wall turning over segment template.
6. the construction method of reinforced concrete water pond according to claim 1, is characterized in that, the concreting of aforementioned pond comprises pond base concrete and builds and casting pond wall concrete, at the bottom of pond and pool wall build at twice, wherein:
Pond base concrete build employing pumping, distributing device enters mould, build order be: first base plate one-time-concreting, and then pool wall turns over part build;
Casting pond wall concrete adopts Site station concentrated compactness, and pumping distributing device cloth enters mould, at least divides two layers to carry out concreting in the height direction.
7. the construction method of reinforced concrete water pond according to claim 1, it is characterized in that, aforementioned ater-casting is built to comprise and is adopted the concrete of expansive concrete or a raising strength grade to build, and wherein the volume of the addition ratio pond body of expansion agent increases by 50%.
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