CN103967313B - A kind of water-proof repairing method of steel concrete squat silo roof - Google Patents
A kind of water-proof repairing method of steel concrete squat silo roof Download PDFInfo
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- CN103967313B CN103967313B CN201410153410.XA CN201410153410A CN103967313B CN 103967313 B CN103967313 B CN 103967313B CN 201410153410 A CN201410153410 A CN 201410153410A CN 103967313 B CN103967313 B CN 103967313B
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Abstract
The invention discloses the water-proof repairing method of a kind of steel concrete squat silo roof of the present invention, by cutting the waterproof layer of storehouse, ring beam top addendum cone plate and draining eaves gutter, find out the constuction joint of storehouse addendum cone plate and draining eaves gutter junction and fall the constuction joint of nib periphery, and give slip casting shutoff, to improve the anti-permeability performance of structure, fundamentally solve the problem of constuction joint seepage; Meanwhile, by setting up spilled water hole, draining drainage tube at draining eaves gutter place, improving storehouse and pushing up hydrophobic drainage condition; And in the junction of the waterproof layer of the storehouse addendum cone plate heavily spread and draining eaves gutter, dividing joint is set, the compatibility of deformation of both reinforcements, prevent new crack, thus thoroughly solve the leakage problems of squat silo roof.The present invention has abandoned the construction method that conventional roof repairs waterproof layer or preparing structure within doors, and change into while the preparing structure slabbing seam of top, storehouse, multi-pronged, policy follow, greatly reduces construction cost, accelerates construction speed.
Description
Technical field
The present invention relates to the construction method of water-proof repairing in Construction Technology field, particularly relate to a kind of water-proof repairing method of steel concrete squat silo roof.
Background technology
Silo be store grain, the vertical vessel of the bulk solids such as feed, coal, cement and ore, it has saving land for warehouses, is conducive to carrying out loading and unloading mechanization and automation, minimizing material loss and reducing dust to features such as the pollutions of environment, is widely used in industrial and agricultural production and accumulating department.Wherein reinforced concrete circular silo is Large Copacity storehouse type most widely used at present, and by ratio of height to diameter (grain storage height and the ratio of storehouse internal diameter), being dark storehouse (or vertical silo) when being more than or equal to 1.5, is shallow storehouse (or storehouse, shallow garden) when being less than 1.5.Silo is generally independent chamber, and each storehouse diameter can reach more than 18 meters, and height can reach more than 35 meters, and holding capacity of bin can reach more than 10,000 tons.Cang Ding is provided with the equipment such as trestle and various conveying, ventilation, and load is heavier.Hold Ceiling adopts conical monolithic reinforced concrete structure.
Because the storehouse addendum cone plate of silo and draining eaves gutter are that gradation is cast-in-place; both waterproofing process exist different; as shown in Figure 1; the classification of waterproof of storehouse addendum cone plate is generally II grade; employing twice are set up defences, and its structure (from bottom to up) is generally: reinforced concrete structure layer 1, and------------waterproof roll 5---insulation layer 6---pea gravel concreten is whole builds layer 7 to mortar cover 4 to waterproof coating layer 3 to mortar levelling layer 2.The classification of waterproof of draining eaves gutter is generally III grade, adopts and sets up defences together, its structure (from bottom to up) is generally: reinforced concrete structure layer 1---mortar levelling layer 2---waterproof roll 5---mortar cover 4.
Existing squat silo roof occurs that the reason of seepage can be summed up as the following aspects:
The first, there is constuction joint in squat silo roof superstructure, and this is the main cause of top, storehouse seepage, specifically comprises two aspects:
1, the constuction joint between storehouse addendum cone plate and draining eaves gutter.According to construction technology, squat silo roof Construction of The Superstructure flow process is: and bulkhead construction (sliding formwork) → storehouse apical ring beam 30, draining eaves gutter 20 construct → and storehouse addendum cone plate 10 constructs, as shown in Figure 2.Therefore, storehouse addendum cone plate 10, draining eaves gutter 20 and storehouse apical ring beam 30 are that gradation is cast-in-place, there is constuction joint 9 between storehouse addendum cone plate 10 and draining eaves gutter 20.
2, the constuction joint of nib periphery falls.When adopting the overall truss of assembling as storehouse top template support platform, the dismounting of truss platform generally adopts entire lowering mode, now at storehouse addendum cone plate 10(near storehouse apical ring Liang30Chu) on reserved several and fallen nib 14, as shown in Figure 4.The storehouse addendum cone board concrete falling nib 14 place is built falling after mould completes again.Therefore, fall nib 14 periphery and also there is constuction joint (not shown).
The second, storehouse top waterproof layer impaired inefficacy, cause the impaired inefficacy of waterproof layer because have thermal (temperature difference) stress, rain erosion and outside destroy three aspects.
1, between season in summer in winter two or there is the very large temperature difference round the clock summer, thermal (temperature difference) stress can cause waterproof layer to produce microcrack.
2, the typhoon season that the rainfall is plentiful damp and hot at high temperature, due to rain erosion and bulking, waterproofing course, insulation layer and whole layer of building easily are out of shape, play drum, cracking, cause waterproofing materials accelerated ageing and lose efficacy.
3, in rigging up and debugging process, sometimes also there will be boring, external impacts and vibration equipment, top, artificial damage storehouse waterproof layer.
Three, top, storehouse drainage system existing defects, comprises two aspects:
1, drain gully lazy weight.If storehouse roof fall mouth of a river lazy weight or appearance blocking, during heavy rain, impeded drainage can cause a large amount of ponding of draining eaves gutter, will slowly from structural weak infiltration storehouse after ponding soaks for a long time, and formation is leaked.
2, draining eaves gutter design elevation is too high.When draining eaves gutter is non-sunk type, namely the draining eaves gutter 20 of Cang Ding is with addendum cone plate 10 bottom, storehouse without the discrepancy in elevation, and as shown in Figure 2, the ponding in draining eaves gutter 20 forms seepage in putting in storage easily via the constuction joint infiltration of the weakness of structure.Otherwise, when draining eaves gutter is sunk type, as shown in Figure 3, then because ponding is in outside bulkhead, in not easily infiltration is put in storage.
In current existing routine techniques, the method of squat silo roof being carried out to water-proof repairing mainly carries out temporary repair for top, storehouse waterproof layer, owing to not processing the crack of the existence of storehouse roof construction layer itself, can not tackle the problem at its root, once waterproof layer lifetime expires lost efficacy, again will there is seepage again in Cang Ding, so mending-leakage effect is poor; In prior art, the method for leakage employing pipe laying slip casing by pressure is within doors also had to carry out mending-leakage, the method can only be suitable for when story height is little, and due to the particularity of silo structure, its storehouse inner height is often up to tens meters, indoor mending-leakage operation is carried out in high-altitude like this, difficulty of construction is very big, and high-altitude working safety is also difficult point, if construct in grain face in storehouse in the situation of buying securities with all one's capital, owing to there is dust explosion risk in closed bin, in storehouse, construction is forbidden.Therefore, find a technical feasibility, construction safety, technique water-proof repairing method that is simple, cheap, squat silo roof fast and effectively, there is realistic meaning.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of water-proof repairing method that is quick, effective, steel concrete squat silo roof reliably, to realize water-proof repairing and the maintenance of storehouse being pushed up to seepage.
The solution that the present invention solves its technical problem is: a kind of water-proof repairing method of steel concrete squat silo roof, comprises the following steps:
(1), cut the waterproof layer of storehouse, ring beam top addendum cone plate until expose the deck of storehouse addendum cone plate, cut the waterproof layer of ring beam top draining eaves gutter until expose the deck of draining eaves gutter;
(2), find out the constuction joint of storehouse addendum cone plate and draining eaves gutter junction and fall the constuction joint of nib periphery, slip casing by pressure shutoff is carried out to constuction joint;
(3), several spilled water holes are set in the draining eaves gutter chiseled;
(4), again lay the waterproof layer chiseling place's storehouse addendum cone plate and draining eaves gutter, and dividing joint is set in both waterproof layer junctions;
(5), several draining drainage tubes are set in draining eaves gutter;
(6) other local damage position of waterproof layer of storehouse addendum cone plate and draining eaves gutter, is repaired.
Be further used as the improvement of technical solution of the present invention; the waterproof layer of described storehouse addendum cone plate is from top to bottom followed successively by wholely builds layer, insulation layer, waterproof roll, mortar cover, waterproof coating layer, mortar levelling layer, and the waterproof layer of described draining eaves gutter is followed successively by mortar cover, waterproof roll, mortar levelling layer from top to bottom.
Be further used as the improvement of technical solution of the present invention, in step (1), the waterproof layer of described storehouse addendum cone plate and draining eaves gutter initially to cut width identical, cut along ring beam top hoop, when exposing the waterproof roll of the waterproof roll of storehouse addendum cone plate and draining eaves gutter, cutting width and reducing by half separately.
Be further used as the improvement of technical solution of the present invention, in step (2), in step (2), bury Grouting Pipe underground along described constuction joint interval, and adopt clearance-type grouting mode.
Be further used as the improvement of technical solution of the present invention, in step (3), each described spilled water hole is arranged along draining eaves gutter hoop interval, and each described spilled water hole to be positioned at below waterproof roll and to penetrate the deck of draining eaves gutter.
Be further used as the improvement of technical solution of the present invention, in step (4), when again laying the waterproof layer of the waterproof layer of storehouse addendum cone plate and draining eaves gutter, the waterproof roll two ends heavily spread to be overlapped on respectively under the waterproof roll of original storehouse addendum cone plate and the waterproof roll of draining eaves gutter and to have the lap width being not less than 150 millimeters.
Be further used as the improvement of technical solution of the present invention, in step (4), described dividing joint is arranged circumferentially along Cang Ding, is filled with buildings waterproof encapsulant in described dividing joint.
Be further used as the improvement of technical solution of the present invention, in step (5), each described draining drainage tube spacer ring is to being in tilted layout.
Beneficial effect of the present invention: the water-proof repairing method of a kind of steel concrete squat silo roof of the present invention, by cutting the waterproof layer on apical ring beam top, storehouse, find out the constuction joint of storehouse addendum cone plate and draining eaves gutter junction and fall the constuction joint of nib periphery, and give slip casting shutoff, to improve the anti-permeability performance of structure, fundamentally solve the problem of deck constuction joint seepage; Meanwhile, by setting up spilled water hole, draining drainage tube on draining eaves gutter, improving storehouse and pushing up hydrophobic drainage condition; And in the junction of the waterproof layer of the storehouse addendum cone plate heavily spread and draining eaves gutter, dividing joint is set, the compatibility of deformation of both reinforcements, prevent new crack, thus thoroughly solve the construction difficult problem of silo shell roof seepage.The present invention has abandoned the construction method that conventional roof repairs waterproof layer or preparing structure within doors, and change into while the preparing structure slabbing seam of top, storehouse, multi-pronged, policy follow, greatly reduces construction cost, accelerates construction speed.Therefore, it is the development and improvement construction method in this field not only, also has huge economic benefit and an important realistic meaning.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is described further;
Fig. 1 is the schematic diagram of existing squat silo roof structure;
Fig. 2 is the schematic diagram of non-sunk type draining eaves gutter in existing squat silo roof structure;
Fig. 3 is the schematic diagram of sunk type draining eaves gutter in existing squat silo roof structure;
Fig. 4 is the floor map of falling nib in existing squat silo roof structure;
Fig. 5 is the schematic diagram that in the embodiment of the present invention, squat silo roof structure cuts;
Fig. 6 is the schematic diagram of squat silo roof structure restoration in the embodiment of the present invention;
Fig. 7 is the schematic diagram of draining drainage tube in the embodiment of the present invention.
Detailed description of the invention
With reference to Fig. 5 to Fig. 7, a kind of water-proof repairing method of steel concrete squat silo roof, comprises the following steps:
(1), cut the whole of storehouse, ring beam top addendum cone plate and build layer 7, insulation layer 6, waterproof roll 5, mortar cover 4, waterproof coating layer 3, mortar levelling layer 2, until expose the deck 1 of storehouse addendum cone plate, cut the mortar cover 4 of ring beam top draining eaves gutter, waterproof roll 5, mortar levelling layer 2, until expose the deck 1 of draining eaves gutter;
(2), cleaning cuts position, finds out the constuction joint 9 of storehouse addendum cone plate and draining eaves gutter junction and falls the constuction joint 9 of nib periphery, carrying out slip casing by pressure shutoff to constuction joint 9;
(3), several spilled water holes 8 are set in the draining eaves gutter chiseled;
(4), again lay the waterproof layer chiseling place's storehouse addendum cone plate and draining eaves gutter, and dividing joint 15 is set in both waterproof layer junctions;
(5) the floor drain mouth, in dredging draining eaves gutter, sets up draining drainage tube 12 in draining eaves gutter;
(6) other local damage positions of waterproof layer of storehouse addendum cone plate and draining eaves gutter, are repaired.
The water-proof repairing method of this steel concrete squat silo roof, by cutting the waterproof layer on apical ring beam top, storehouse, find out the constuction joint 9 of storehouse addendum cone plate and draining eaves gutter junction and fall the constuction joint 9 of nib peripheral structure layer, and give slip casting shutoff, to improve the anti-permeability performance of structure, fundamentally solve the problem of deck constuction joint seepage; Meanwhile, by setting up spilled water hole 8, draining drainage tube 12 on draining eaves gutter, improving storehouse and pushing up hydrophobic drainage condition; And in the junction of the waterproof layer of the storehouse addendum cone plate heavily spread and draining eaves gutter, dividing joint 15 is set, the compatibility of deformation of both reinforcements, prevent new crack, thus thoroughly solve the construction difficult problem that silo shell roof leaks.The present invention has abandoned the construction method that conventional roof repairs waterproof layer or preparing structure within doors, and change into while the preparing structure slabbing seam of top, storehouse, multi-pronged, policy follow, greatly reduces construction cost, accelerates construction speed.
As the preferred embodiment of the present invention; in step (1); when cutting original waterproof layer; initially cutting width is 1.0 ~ 1.2 meters, and storehouse addendum cone plate and draining eaves gutter respectively account for half, when exposing waterproof roll 5; cut width to reduce by half; when rooting out waterproof roll 5, the mortar cover 4 of its underpart, waterproof coating layer 3, mortar levelling layer 2 must be cut, until expose the deck 1 of storehouse addendum cone plate and draining eaves gutter simultaneously.The object done like this is convenient to find the constuction joint 9 in deck 1, should will all constuction joints 9 of seepage may be caused to come out as far as possible.
As the preferred embodiment of the present invention, in step (2), after finding out constuction joint 9, in order to fully expose its trend, the V-shaped groove that 30mm is wide, 20mm is dark must be cut a hole into it, then, a hole is bored at interval of 200 ~ 250mm along constuction joint 9, installation, pre-buried ф 8 grouting are chewed, and stitch 9 with accelerated cement plugging construction, then pour into hydrophilically modified epoxy chemical slurries, according to the distribution sequence of chewing of being in the milk after grouting liquid reaches predetermined strength to constuction joint 9, excision grouting is chewed, and the seam face filling silicone weatherproof sealant then along constuction joint 9 is closed.
Wherein, clearance-type grouting mode is adopted to constuction joint 9, during slip casting, send special messenger to observe slip casting effect in storehouse, when finding have slurries to ooze out in storehouse, slip casting should be suspended in time, after slurries fully permeate and condense, recovering slip casting again.So repeated multiple times, until slip casting is full, grouting pressure should adjust at any time, and constuction joint 9 then should adopt low-pressure grouting comparatively greatly, and grouting pressure is preferably 0.1 ~ 0.3Mpa; Constuction joint 9 comparatively detailed rules and regulations should adopt high-pressure slip-casting, and grouting pressure is preferably 1 ~ 3Mpa.
Adopt the V-shaped groove seam face of silicone weatherproof sealant closure construction seam 9, because it has the good ability of bearing gap displacement, when agent structure is subject to the distortion such as thermal (temperature difference) stress or load action generation Settlement and displacement, the gap width of constuction joint 9 also can change thereupon, and silicone weatherproof sealant can not ftracture when the gap width change of to bear constuction joint 9 for a long time.
As the preferred embodiment of the present invention, in step (3), spilled water hole 8 is diameter ф 20 through hole, arrange along draining eaves gutter hoop interval, spacing is 2 ~ 3 meters, and spilled water hole 8 need drill the deck 1 of draining eaves gutter, and be arranged at below waterproof roll 5, when there is ponding bottom waterproof roll 5, ponding can be discharged from spilled water hole 8 in time, substantially improves the drainage condition of Cang Ding.
As the preferred embodiment of the present invention, in step (4), when heavily spreading waterproof roll 5, its two ends should be overlapped under the waterproof roll 5 of original storehouse addendum cone plate and the waterproof roll 5 of draining eaves gutter respectively, and have the lap width being not less than 150 millimeters.
As the preferred embodiment of the present invention, in step (4), when again laying the waterproof layer of storehouse addendum cone plate and draining eaves gutter, the groove of wide 100 millimeters should be reserved between as dividing joint 15, dividing joint 15 is along storehouse apical ring to layout, play compatibility of deformation effect, after dividing joint 15 bone dry, within it fill and there is the buildings waterproof encapsulant bearing gap displacement capacity, this buildings waterproof encapsulant can select silicone weather resistant glue, and it can guarantee that dividing joint 15 has good water-tight ability.
As the preferred embodiment of the present invention, in step (5), each draining drainage tube 12 be inclined at bottom parapet with draining eaves gutter intersection, the diameter of this draining drainage tube 12 is not less than ф 50, quantity 3 ~ 4, along storehouse apical ring to layout, generally select PVC plastic pipe, mainly play promotion drainage during heavy rain.
As the preferred embodiment of the present invention, in step (6), the waterproof layer of local damage comprises roofing micro-cracks breach or point-like breaking point, the exposed coiled material in reserving hole border destroyed and cracking place, inner corner trim intersection, concrete surface dusting place etc., and igelite waterproofing unction hot melt can be adopted to pour into shutoff.
More than that better embodiment of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (8)
1. a water-proof repairing method for steel concrete squat silo roof, is characterized in that, comprises the following steps:
(1), cut the waterproof layer of storehouse, ring beam top addendum cone plate until expose the deck of storehouse addendum cone plate, cut the waterproof layer of ring beam top draining eaves gutter until expose the deck of draining eaves gutter;
(2), find out the constuction joint of storehouse addendum cone plate and draining eaves gutter junction and fall the constuction joint of nib periphery, slip casing by pressure shutoff is carried out to constuction joint;
(3), several spilled water holes are set in the draining eaves gutter chiseled;
(4), again lay the waterproof layer chiseling place's storehouse addendum cone plate and draining eaves gutter, and dividing joint is set in both waterproof layer junctions;
(5), several draining drainage tubes are set in draining eaves gutter;
(6) other local damage position of waterproof layer of storehouse addendum cone plate and draining eaves gutter, is repaired.
2. the water-proof repairing method of steel concrete squat silo roof according to claim 1; it is characterized in that: the waterproof layer of described storehouse addendum cone plate is from top to bottom followed successively by wholely builds layer, insulation layer, waterproof roll, mortar cover, waterproof coating layer, mortar levelling layer, and the waterproof layer of described draining eaves gutter is followed successively by mortar cover, waterproof roll, mortar levelling layer from top to bottom.
3. the water-proof repairing method of steel concrete squat silo roof according to claim 2, it is characterized in that: in step (1), the waterproof layer of described storehouse addendum cone plate and draining eaves gutter initially to cut width identical, cut along ring beam top hoop, when exposing the waterproof roll of the waterproof roll of storehouse addendum cone plate and draining eaves gutter, cutting width and reducing by half separately.
4. the water-proof repairing method of steel concrete squat silo roof according to claim 2, is characterized in that: in step (2), buries Grouting Pipe underground, and adopt clearance-type grouting mode along described constuction joint interval.
5. the water-proof repairing method of steel concrete squat silo roof according to claim 2, it is characterized in that: in step (3), each described spilled water hole is arranged along draining eaves gutter hoop interval, and each described spilled water hole to be positioned at below waterproof roll and to penetrate the deck of draining eaves gutter.
6. the water-proof repairing method of steel concrete squat silo roof according to claim 2, it is characterized in that: in step (4), when again laying the waterproof layer of the waterproof layer of storehouse addendum cone plate and draining eaves gutter, the waterproof roll two ends heavily spread to be overlapped on respectively under the waterproof roll of original storehouse addendum cone plate and the waterproof roll of draining eaves gutter and to have the lap width being not less than 150 millimeters.
7. the water-proof repairing method of steel concrete squat silo roof according to claim 2, is characterized in that: in step (4), described dividing joint is arranged circumferentially along Cang Ding, is filled with buildings waterproof encapsulant in described dividing joint.
8. the water-proof repairing method of steel concrete squat silo roof according to claim 2, is characterized in that: in step (5), and each described draining drainage tube spacer ring is to being in tilted layout.
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| CN103967313B true CN103967313B (en) | 2016-03-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104405164A (en) * | 2014-11-27 | 2015-03-11 | 无锡华中科技有限公司 | Powder cabin cone roof structure |
| CN112112468B (en) * | 2020-10-28 | 2021-08-27 | 河南工业大学 | Hybrid connection assembly type round bin top structure and round bin |
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