CN100564804C - Super-section centripetal-stress resistance to deformation culvert pipe and preparation technology thereof - Google Patents
Super-section centripetal-stress resistance to deformation culvert pipe and preparation technology thereof Download PDFInfo
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- CN100564804C CN100564804C CNB2005100124306A CN200510012430A CN100564804C CN 100564804 C CN100564804 C CN 100564804C CN B2005100124306 A CNB2005100124306 A CN B2005100124306A CN 200510012430 A CN200510012430 A CN 200510012430A CN 100564804 C CN100564804 C CN 100564804C
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Abstract
The present invention relates to a kind of super-section centripetal-stress resistance to deformation culvert pipe and preparation technology thereof, include nexine, middle level and outer three layers of cylinder type skeleton, on outer skeleton, be fixed with dextrorotation hoop bobbin and derotation hoop bobbin, in bobbin, be installed with through stretch-draw and produce prestressed steel strand, be fixed with the oblique bobbin of a right tiltedly bobbin and a left side of diagonal cross respectively in the both sides of middle level skeleton, in bobbin, be installed with through stretch-draw and produce prestressed steel strand, the present invention is applicable to that highlands and super degree of depth length are apart from the culvert pipe engineering, also be applicable to subway engineering, underground over strait, the super-huge length of rivers is apart from Channel Engineering.Can also be used for especially big flow water delivery engineering wear the mountain culvert, can also be used for the especially big mountain tunnel engineering of wearing, can also be used for the Structural Engineering of the drum type brake of super-large diameter.
Description
Technical field
The present invention relates to a kind of super-section centripetal-stress resistance to deformation culvert pipe and preparation technology thereof.
Technical background
The conventional construction technology of at present domestic traditional superhuge construction of tunnel, because of being subjected to the restriction of technology preparation condition, can only be used for the general rivers subterranean tunnel engineering of striding, also the construction of tunnel endoporus of striding rivers because of the restriction that is subjected to " agent structure " does not have the case history above 12 meters yet.Traditional job practices has two kinds, a kind of is ultra-large type shield structure technology, a kind of is manually to dig cast in place process, shield structure technology is earlier with prefabricated section of jurisdiction combination body liner, pouring into a large amount of concrete strengthenings toward crack, also to build structure thick more than 1 meter, therefore the engineering quantity of culvert excavation is big especially, the concrete engineering quantity of building is also big especially, cause construction costs high especially therefrom, material resources that is consumed and manpower are also big especially, also because of the restriction of objective execution conditions, also can cause the duration long especially.The present invention is because of having changed form of construction work, execution conditions have been improved, reduced engineering quantity, improve the mechanized construction level, improved the application level of automation again, therefore can adapt to line highlands, south water to north west, geological conditions is the engineering construction of complicated meizoseismal area especially, can satisfy in western Ba Yan noise made in coughing or vomiting and draw the area to build buried more than 1000 meters, long more than 100 kilometer, the needs of the super-huge waterline of internal diameter more than 8 meters.
Summary of the invention
Technical problem to be solved by this invention provides a kind of super-section centripetal-stress resistance to deformation culvert pipe that can effectively improve antidetonation, counter-bending, resist displacement.
The present invention adopts following technical scheme:
The present invention includes the concrete culvert pipe with great body and be arranged on the cylinder frame of making by vertical muscle and ring muscle in the culvert pipe body, it is characterized in that being provided with nexine, middle level and outer three layers of cylinder type skeleton, on outer skeleton, be fixed with dextrorotation hoop bobbin and derotation hoop bobbin, in bobbin, be installed with through stretch-draw and produce prestressed steel strand, a right tiltedly bobbin that is fixed with diagonal cross respectively in the both sides or the outside of middle level skeleton and a left side be bobbin tiltedly, is installed with in bobbin through stretch-draw and produces prestressed steel strand.Be fixed with vertical bobbin in the outside of nexine skeleton, in the pipe of vertical bobbin, be installed with and produce prestressed steel strand through stretch-draw.Between external wall of culvert pipe and concrete outer lining, be provided with the rubber and plastic separation layer of cushioning effect.Be provided with the ground tackle that is used for fixing and be used for helping of stretch-draw at culvert pipe body inwall A-A and draw ground tackle, also have the fixedly snap close of steel strand.
The outer skeleton of the cylinder type of the present invention in the concrete culvert pipe with great body is fixed with the semicircle bellows that begins dextrorotation, derotation from culvert pipe body one end respectively, be dextrorotation hoop bobbin and derotation hoop bobbin, in bellows, be installed with steel strand, the two ends of steel strand are connected with ground tackle on being arranged on culvert pipe body inwall, steel strand produce prestressing force through stretch-draw, its ring culvert pipe body rotation 1-50 circle.
Steel strand in dextrorotation hoop bobbin of the present invention the present invention and the derotation hoop bobbin be arranged on helping of culvert pipe body inwall and draw ground tackle to be connected.
The steel strand that the present invention is arranged in dextrorotation hoop bobbin and the derotation hoop bobbin draw ground tackle around being provided with one or more helping in one week of culvert pipe body.
The prestress wire of the present invention in the oblique bobbin of an oblique bobbin in the right side and a left side fixed by the culvert pipe origin or beginning, carries out stretch-draw by an end that connects construction.
The present invention in the concrete culvert pipe with great body outside, in, the three layers of skeleton in lining are fixed with dextrorotation hoop bobbin, derotation hoop bobbin, right tiltedly bobbin, a left side tiltedly bobbin and vertical bobbin respectively, it is semi-circular metal bellows or is installed with the 1-3 root respectively in each bellows and produces prestressed steel strand through stretch-draw.
The outer skeleton of the present invention in the concrete culvert pipe with great body is fixed with dextrorotation hoop bobbin, derotation hoop bobbin respectively, and it is and can produces prestressing force through stretch-draw with the overcoat plastic pipe that is installed with prestress wire.
Overlength culvert pipe body of the present invention can be through spraying or pasted the rubber and plastic separation layer construction of cushioning effect at the culvert inwall, also can be in the ditch that excavate in the Plain, utilize the curved pipe base behind the support exterior sheathing, connect the technological process construction and be made into overlength culvert pipe body.Also use vertical construction technology, produce the culvert pipe body of 5-8 rice, in the lifting displacement, connect into overlength culvert pipe body then with longitudinal prestressing technology.
The shrinkage joint of overlength body of the present invention seals with rubber fastening band, and the body of vertical making seals with the rubber seal ring.
The preparation technology of super-section centripetal-stress resistance to deformation culvert pipe of the present invention comprises the following steps:
The making of first step concrete outer lining: behind shield machine or the good culvert body of hand excavation, the net sheet with φ 6-φ 12 reinforcement fabrications is fixed on the culvert outer wall, the good cylinder type combination of support exterior sheathing is built crack concrete outer lining.
Second step was removed the combination exterior sheathing: after treating the outer lining concrete setting, remove the combination exterior sheathing, and forward impelling in order, connect next pipeline section of construction and other pipeline section.
The making of the 3rd step rubber and plastic separation layer: with high-elastic, high pressure resistant, ageing-resistant rubber and plastic synthetic materials, the technology making rubber and plastic separation layer that utilizes spraying or paste.
The making of the 4th step cylinder type skeleton: press working condition requirement length 10-15 mitron section, make cylinder type skin skeleton, middle level skeleton, nexine skeleton respectively, and link into an integrated entity with reinforcing bar radially.
The making of the 5th step dextrorotation bobbin, derotation bobbin: in the inboard of outer dermoskeleton frame or outside distribution dextrorotation, derotation bobbin, and put on steel strand respectively, install helping of each position and draw ground tackle at bobbin.
Right tiltedly bobbin of the 6th step, the tiltedly making of bobbin of a left side: in the both sides or the outside of middle level skeleton, distribution diagonal cross bobbin, and vertical bobbin that distributes in the outside of nexine skeleton, in each pipe, put on steel strand respectively, reserve anchor hole and install the fixedly ground tackle of origin or beginning and the ground tackle of stretch-draw end.
The installation of the 7th step culvert pipe inner formword:, and reserve anchor hole at each position of inner formword and install respectively to help and draw ground tackle and tension ground tackle at culvert pipe inner support combined type inner formword.
The installation of the 8th step end face template: determine the internal diameter and the external diameter of end face template according to the internal diameter size of culvert pipe body, and the reserved steel bar joint, and and inner formword connect together.
The 9th step was built the culvert pipe body concrete: use the high pressure mortar pump toward the interior concreting of pipeline section template, and smash moulding by the technological requirement shake.
The tenth step stripping, stretch-draw anchor: culvert pipe body concrete intensity reaches 70% when above, removes inner formword, by installing tensioner, divides the priority stretch-draw anchor by vertical oblique hoop.
The 11 step vacuum is built, the pressurization sealing off and covering anchorage: each bobbin is evacuated, injects the high-mark cement slurry that adds expansion agent, accelerating admixture with high-pressure pump respectively, and flat reserving the anchor hole envelope after pressurizeing with the special cement slurry.
The connection of the 12 step prestressed reinforcement: connect oblique, vertical steel strand with connector, use the sleeve connection lengthwise rib, repeat above-mentioned steps and make second pipeline section and other pipeline section.
The making at the 13 step culvert pipe end of body shrinkage joint: when the continuous body that constitutes of pipeline section reaches design length, an end of rubber fastening band is built in the end of culvert pipe body, the some culvert pipe bodies that repeat like this to make have formed waterline.
Good effect of the present invention is as follows: the present invention forms outer looped network with the new model of " hoop multilayer net structure " by dextrorotation, derotation presstressed reinforcing steel, has formed the centripetal-stress net by the oblique pre-stressed longitudinal net in middle level adding.Ring orientation prestress rib adopts dextrorotation, derotation, orientation, fixed point, and quantitatively step helps the new technology of drawing.The longitudinal prestressing muscle adopts diagonal cross, and an end is fixed, the new technology of tensioned at one end.
The present invention adopts the new technology of drawing culvert pipe body wife, new technology, solved the especially big technical barrier of structure of the present invention with single presstressed reinforcing steel or the stretch-draw of many presstressed reinforcing steel connection steps, filled up the employing prestressed structure, build the new technology of the super-huge culvert pipe in heavy in section, also filled up the new technology that adopts prestressed structure to build super-huge cylinder type body.Can bring up to a new height to the prestressing force industry.
The present invention's employing is carried out step and is helped the new technology of drawing in the culvert pipe body, new technology is characterized in that (stroke length) has reduced friction loss in allowed band, can make ring orientation prestress rib dextrorotation, the some circles of derotation, (1-50 circle) can reach the stressed uniform purpose of hoop.Adopt diagonal cross stretch-draw new technology, can make body form oblique stress, because the combination of circumference stress and oblique stress can make whole body form " centripetal-stress structure ", it is stressed to reach a side, whole optimum efficiency of offsetting.
The present invention adopts semicircle bellows, and the way (can help simultaneously draw, anchoring) that can wear 1-3 root prestressing force steel hinge line in a pipe simultaneously can be increased to 80 meters of diameters to three-dimensional cylindrical structure, height can reach 30 meters (balancing tanks that can be used for waterline).
The present invention is rational in infrastructure, makes whole tube wall form " centripetal-stress ", and anti-impact force is stronger for this reason, and the ability of anti-breaking force, resistance to deformation is bigger.China western Bayan Har area, landform, the ground condition, geological structure is complicated especially, and the height seismic activity is frequent especially, the surrouding rock deformation instability.If build buried more than 1000 meters in the meizoseismal area that this condition is complicated especially, more than the 100 kilometer king-sized waterline of long internal diameter is impossible at all with traditional common process technology.If can adopt this new construction of super-section centripetal-stress resistance to deformation, new technology, new technology just can be offset high-ground stress, just can resist the impact of active fault.
Super-section centripetal-stress resistance to deformation culvert pipe is specially adapted to the super degree of depth length in highlands apart from the culvert pipe engineering, also is applicable to the super-huge water delivery engineering that 300 flows are above, also is applicable to subway engineering, underground over strait, stride the super-huge length of rivers apart from Channel Engineering.What can also be used for especially big flow wears mountain culvert pipe engineering, can also be used for the super-huge mountain tunnel engineering of wearing, and can also make the overlength waterline of internal diameter 8-16 rice and the passage over strait of super-large diameter with this technology.Can also build 80 meters of internal diameters, the balancing tank of high 30 meters super-huge waterline.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention
Accompanying drawing 2 is that accompanying drawing 1A-A of the present invention is to cross section view
Accompanying drawing 3 is the B portion enlarged drawing of accompanying drawing 1 of the present invention
Accompanying drawing 4 is bobbin sectional view of the present invention
Accompanying drawing 5 is the D portion enlarged drawing of accompanying drawing 2 of the present invention
Accompanying drawing 6 is for having hoop bobbin schematic diagram around the home on the outer skeleton of the present invention
Accompanying drawing 7 is a dextrorotation hoop bobbin of the present invention form schematic diagram around the home
Accompanying drawing 8 is a derotation hoop bobbin of the present invention form schematic diagram around the home
Accompanying drawing 9 draws ground tackle and steel strand connection diagram for the present invention helps
Accompanying drawing 10 is culvert pipe body connection diagram of the present invention
In the accompanying drawings: 1, the culvert pipe body, 2 outer skeletons, 3 dextrorotation hoop bobbins, 4 derotation hoop bobbins, 5 vertical muscle, 6 ring muscle, 7 middle level skeletons, 8 ring muscle, 9 vertical muscle, 10 right tiltedly bobbins, 11 left sides are bobbin tiltedly, 12 nexine skeletons, 13 ring muscle, 14 vertical muscle, 15 vertical bobbins, 16 ground tackles, 17 steel strand, 18 help and draw ground tackle, 19, snap close, 20, the construction junction, 21, rubber fastening band, 22 rubber and plastic separation layers, the external wall of 23 culvert pipe, 24 culvert pipe shrinkage joint, 25 concrete outer linings, 26 rock stratum.
The specific embodiment
As shown in drawings, the present invention includes concrete culvert pipe with great body 1 and be arranged on the cylinder frame of making by vertical muscle and ring muscle in the culvert pipe body 1, it is characterized in that being provided with nexine, middle level and outer three layers of cylinder type skeleton, on outer skeleton 2, be fixed with dextrorotation hoop bobbin 3 and derotation hoop bobbin 4, in bobbin, be installed with through stretch-draw and produce prestressed steel strand 17, a right tiltedly bobbin 10 that is fixed with diagonal cross respectively in the both sides or the outside of middle level skeleton 7 and a left side be bobbin 11 tiltedly, is installed with in bobbin through stretch-draw and produces prestressed steel strand 17.Be fixed with vertical bobbin 15 in the outside of nexine skeleton 12, in the pipe of vertical bobbin 15, be installed with and produce prestressed steel strand 17 through stretch-draw.Between external wall 23 of culvert pipe and concrete outer lining 25, be provided with the rubber and plastic separation layer 22 of cushioning effect.Be provided with the ground tackle that is used for fixing 16 and be used for helping of stretch-draw at culvert pipe body inwall A-A and draw ground tackle 18, also have the fixedly snap close 19 of steel strand 17.
The outer skeleton 2 of the cylinder type of the present invention in concrete culvert pipe with great body 1 is fixed with the semicircle bellows that begins dextrorotation, derotation from culvert pipe body 1 one ends respectively, be dextrorotation hoop bobbin 3 and derotation hoop bobbin 4, in bellows, be installed with steel strand 17, the two ends of steel strand 17 are connected with ground tackle 16 on being arranged on culvert pipe body 1 inwall, steel strand 17 produce prestressing force through stretch-draw, its ring culvert pipe body rotation 1-50 circle.
The steel strand 17 that the present invention is arranged in dextrorotation hoop bobbin 3 and the derotation hoop bobbin 4 draw ground tackle 18 around being provided with one or more helping in one week of culvert pipe body.
The prestress wire 17 of the present invention in the oblique bobbin 11 of an oblique bobbin 10 in the right side and a left side fixed by the culvert pipe origin or beginning, carries out stretch-draw by an end that connects construction.
The present invention in concrete culvert pipe with great body 1 outside, in, the three layers of skeleton in lining are fixed with dextrorotation hoop bobbin 3, derotation hoop bobbin 4, right tiltedly bobbin 10, a left side tiltedly bobbin 11 and vertical bobbin 15 respectively, it is semi-circular metal bellows or is installed with 1-3 respectively in each bellows and produces prestressed steel strand 17 through stretch-draw.
The outer skeleton of the present invention in concrete culvert pipe with great body 1 is fixed with dextrorotation hoop bobbin 3, derotation hoop bobbin respectively, and it is and can produces prestressing force through stretch-draw with the overcoat plastic pipe that is installed with prestress wire.
Overlength culvert pipe body 1 of the present invention can be through spraying or pasted the rubber and plastic separation layer construction of cushioning effect at the culvert inwall, also can be in the ditch that excavate in the Plain, utilize the curved pipe base behind the support exterior sheathing, connect the technological process construction and be made into overlength culvert pipe body 1.Also use vertical construction technology, produce the culvert pipe body 1 of 5-8 rice, in the lifting displacement, connect into overlength culvert pipe body 1 then with longitudinal prestressing technology.
The shrinkage joint of overlength body of the present invention seals with rubber fastening band 21, and the body of vertical making seals with the rubber seal ring.
The preparation technology of a kind of super-section centripetal-stress of the present invention resistance to deformation culvert pipe comprises the following steps:
The making of first step concrete outer lining 25: behind shield machine or the good culvert body of hand excavation, the net sheet with φ 6-φ 12 reinforcement fabrications is fixed on the culvert outer wall 23, the good cylinder type combination of support exterior sheathing is built crack concrete outer lining 25.
Second step was removed the combination exterior sheathing: after treating that outer lining concrete 25 solidifies, remove the combination exterior sheathing, and forward impelling in order, connect next pipeline section of construction and other pipeline section.
The making of the 3rd step rubber and plastic separation layer 22: with high-elastic, high pressure resistant, ageing-resistant rubber and plastic synthetic materials, the technology making rubber and plastic separation layer 20 that utilizes spraying or paste.
The making of the 4th step cylinder type skeleton: press working condition requirement length 10-15 mitron section, make cylinder type skin skeleton 2, middle level skeleton 4, nexine skeleton 8 respectively, and link into an integrated entity with reinforcing bar radially.
The making of the 5th step dextrorotation bobbin 3, derotation bobbin 4: in the inboard of outer dermoskeleton frame 2 or outside distribution dextrorotation, derotation bobbin, and put on steel strand 17 respectively, install helping of each position and draw ground tackle 18 at bobbin 3,4.
The installation of the 7th step culvert pipe inner formword:, and reserve anchor hole at each position of inner formword and install respectively to help and draw ground tackle 18 and tension ground tackle 16 at culvert pipe inner support combined type inner formword.
The installation of the 8th step end face template: determine the internal diameter and the external diameter of end face template according to the internal diameter size of culvert pipe body 1, and the reserved steel bar joint, and and inner formword connect together.
The 9th step was built culvert pipe body 1 concrete: use the high pressure mortar pump toward the interior concreting of pipeline section template, and smash moulding by the technological requirement shake.
The tenth step stripping, stretch-draw anchor: culvert pipe body 1 concrete strength reaches 70% when above, removes inner formword, by installing tensioner, divides the priority stretch-draw anchor by vertical oblique hoop.
The 11 step vacuum is built, the pressurization sealing off and covering anchorage: each bobbin is evacuated, injects the high-mark cement slurry that adds expansion agent, accelerating admixture with high-pressure pump respectively, and flat reserving the anchor hole envelope after pressurizeing with the special cement slurry.
The connection of the 12 step prestressed reinforcement: connect oblique, vertical steel strand 14 with connector,, repeat above-mentioned steps and make second pipeline section and other pipeline section with sleeve connection lengthwise rib 5,9,14.
The making at the 13 step shrinkage joint, culvert pipe body 1 end 24: when the continuous body that constitutes of pipeline section reaches design length, an end of rubber fastening band 21 is built in the end of culvert pipe body 1, the some culvert pipe bodies 1 that repeat like this to make have formed waterline.
Overlength culvert pipe body 1 of the present invention can be to construct through spraying or after pasting rubber and plastic separation layer 22 (playing cushioning effect) at the culvert inwall, also can be in the ditch that excavate in the Plain, utilize the curved pipe base behind the support exterior sheathing, connect into overlength culvert pipe body by the technological process construction, also can use vertical construction technology, produce 5-8 mitron body, in the lifting displacement, connect into overlength culvert pipe body then with longitudinal prestressing.
The shrinkage joint of overlength body of the present invention seals with rubber fastening band 21, and the body of vertical making seals with the rubber seal ring.
The technical problem that the present invention solves provides the new model of a kind of employing " hoop multilayer net structure ", it is left-handed that the both sides of the outer skeleton of employing in culvert pipe body 1 are provided with hoop, the dextrorotation presstressed reinforcing steel helps in the setting of culvert pipe inwall and to draw anchor hole, in the new technology of culvert pipe inwall bottom cross fixation stretch-draw.Also adopt a end that the fixed end ground tackle is set at culvert pipe body 1, along culvert pipe body 1 direction the diagonal cross presstressed reinforcing steel is set, the other end stretch-draw of body with the new technology that is connected stretch-draw, also adopt semi-circular bellows 15, in the ripple pore, can improve the polymerization centripetal-stress value of culvert pipe body 1 thus according to the size and the stressed new technology that the flat anchor system of 1-3 root steel strand 17 is set of caliber.Reaching counteracting high-ground stress purpose reaches.Can resist the extruding force of high earthquake region active fault and the purpose of impact force.Guarantee culvert pipe body 1 in extremely complicated geology structure structure area, long-term use is not ftractureed indeformable.
The present invention can section construction, construction continuously, can with shield machine or the hand excavation advance toward depth, by the engineering design requirement, prefabricated culvert pipe body shrinkage joint 24 when arriving certain-length.This technology can also be used for the passage over strait of super-huge long distance, and at culvert pipe hole bottom design earthquake isolating equipment, exhaust system can play and reduce hot-tempered sound, the effect that control is polluted.
The present invention includes the following step:
1, with behind matter structure machine or the good culvert body of hand excavation, the net sheet with Φ 6-Φ 12 reinforcement fabrications is fixed on the culvert inwall, the good cylinder type combination of support exterior sheathing is built crack concrete outer lining 25.
2, treat the outer lining concrete setting after, remove the combination exterior sheathing, in this order forward impelling next section of constructing continuously.
3, toward solidifying spraying or stickup rubber and plastic separation layer on the good concrete outer lining 25.
4, make the outer skeleton 2 of cylinder type, middle level skeleton 7, nexine skeleton 12 in order respectively, and with radially reinforcing bar connection or integrally welded.
5, in the both sides of outer skeleton 2 distribution rings to left-handed, dextrorotation, semi-circular bobbin, promptly dextrorotation hoop bobbin 3 and derotation hoop bobbin 4 and put on steel strand 17 and reserve anchor holes in pipe install to help and draw ground tackle 18.
6, at the both sides of middle level skeleton 7 distribution diagonal cross bobbin, and in pipe, put on steel strand 17, install the fixedly tension ground tackle 16 of ground tackle 16 and the other end.Vertical bobbin that distributes in the outside of nexine skeleton 12, and in pipe, put on steel strand 17, install the tension ground tackle 16 of the fixed end ground tackle 16 and the other end.
7, wall form in the support culvert pipe installs and fixes to help and draws ground tackle 18 and tension ground tackle 16.
8, every 10-15 rice is a construction section, reserves the skeleton reinforcing steel bar joint, installs the end face template.
9, press the construction requirement concreting with the high pressure mortar pump in the body template, moulding is smash in shake in order.
10, the concrete intensity of body reaches 70% when above, and wall form in removing installs tensioner, divides stretch-draw anchor successively by vertical, oblique, hoop.
11, vertical, oblique, the segmentation of hoop bellows that stretch-draw is finished is evacuated, and with the cement paste that injects the high grade that adds expansion agent, accelerating admixture in the past bobbin of minitype high voltage pump, it is flat with the special cement mortar anchor hole to be added press seal respectively.
12, carry out next section in order again, repeat above-mentioned steps and make other pipeline section.
When 13, the culvert pipe thermometer that is made of pipeline section reaches design length, rubber fastening band 21 1 ends are built in culvert pipe body 1 end, when repeating to make another pipeline section, again the other end of rubber fastening band 21 is built in another tube section ends.Form waterline by the some culvert pipe bodies 1 that repeat to make like this.
Other explanation:
A construction of every 10-15 rice pipeline section, one shrinkage joint of per 30 meters-150 meters long designs.
Presstressed reinforcing steel adopts the steel strand of 13 or 15 series.
Circular pipe frame ring muscle adopts the indented bars of Φ 25-Φ 38, and vertical muscle adopts the indented bars of Φ 20-Φ 32.
Reinforcing bar connects with the straight thread reinforced bar sleeve, and the use for tendon connector connects, and helps to draw and uses special-purpose pull aid control stretch-draw.
Hoop is left-handed, the angle of dextrorotation is the 1-15 degree, and the angle of oblique presstressed reinforcing steel is the 3-35 degree.
Can produce internal diameter culvert pipe 8-16 mitron body, the culvert pipe body 1 that also available vertical explained hereafter 5-8 penalizes with new construction.Pipe thickness 350-1000mm.
Can produce internal diameter 10-80 rice with new technology, the balancing tank of the super-huge waterline of high 8-30 rice vertical cylinder structure.
Steel strand of the present invention, also can adopt in the 1 outer wall stretch-draw of culvert pipe body if when the slot grooving of Plain all in the 1 inwall stretch-draw of culvert pipe body.
Claims (9)
1, a kind of super-section centripetal-stress resistance to deformation culvert pipe, comprise culvert pipe body (1) and be arranged on the cylinder frame of making by vertical muscle and ring muscle in the culvert pipe body (1), it is characterized in that being provided with nexine, middle level and outer three layers of cylinder type skeleton, on outer skeleton (2), be fixed with dextrorotation hoop bobbin (3) and derotation hoop bobbin (4), in bobbin, be installed with through stretch-draw and produce prestressed steel strand (17), a right tiltedly bobbin (10) that is fixed with diagonal cross respectively in the both sides or the outside of middle level skeleton (7) and a left side be bobbin (11) tiltedly, in bobbin, be installed with through stretch-draw and produce prestressed steel strand (17), be fixed with vertical bobbin (15) in the outside of nexine skeleton (12), in the pipe of vertical bobbin (15), be installed with and produce prestressed steel strand (17) through stretch-draw, between external wall of culvert pipe (23) and concrete outer lining (25), be provided with the rubber and plastic separation layer (22) of cushioning effect, be provided with the ground tackle (16) that is used for fixing and be used for helping of stretch-draw at culvert pipe body inwall (A-A) and draw ground tackle (18), also have the fixedly snap close (19) of steel strand (17).
2, a kind of super-section centripetal-stress resistance to deformation culvert pipe according to claim 1, it is characterized in that the outer skeleton of cylinder type (2) in culvert pipe body (1) is fixed with the semicircle bellows that begins dextrorotation, derotation from culvert pipe body (1) one end respectively, be dextrorotation hoop bobbin (3) and derotation hoop bobbin (4), in bellows, be installed with steel strand (17), the two ends of steel strand (17) are connected with ground tackle (16) on being arranged on culvert pipe body (1) inwall, steel strand (17) produce prestressing force through stretch-draw, its ring culvert pipe body rotation 1-50 circle.
3, a kind of super-section centripetal-stress resistance to deformation culvert pipe according to claim 1 and 2, it is characterized in that in dextrorotation hoop bobbin (3) and the derotation hoop bobbin (4) steel strand (17) be arranged on helping of culvert pipe body inwall and draw ground tackle (18) to be connected.
4, a kind of super-section centripetal-stress resistance to deformation culvert pipe according to claim 3 is characterized in that the steel strand (17) that are arranged in dextrorotation hoop bobbin (3) and the derotation hoop bobbin (4) draw ground tackle (18) around being provided with one or more helping in one week of culvert pipe body.
5, a kind of super-section centripetal-stress resistance to deformation culvert pipe according to claim 1 and 2 is characterized in that the prestress wire (17) in the oblique bobbin (11) of an oblique bobbin in the right side (10) and a left side is fixed by the culvert pipe origin or beginning, carries out stretch-draw by an end that connects construction.
6, a kind of super-section centripetal-stress resistance to deformation culvert pipe according to claim 1 and 2, it is characterized in that the outer skeleton in culvert pipe body (1) is fixed with dextrorotation hoop bobbin (3), derotation hoop bobbin respectively, it is with the overcoat plastic pipe that is installed with prestress wire, produces prestressing force through stretch-draw.
7, a kind of super-section centripetal-stress resistance to deformation culvert pipe according to claim 1 and 2 is characterized in that described culvert pipe body (1) is through spraying or pasted the rubber and plastic separation layer construction of cushioning effect at the culvert inwall; Or in the ditch that excavate in the Plain, utilize the curved pipe base behind the support exterior sheathing, connect the technological process construction and be made into culvert pipe body (1); Or use vertical construction technology, and produce the culvert pipe body (1) of 5-8 rice, in the lifting displacement, connect into culvert pipe body (1) then with longitudinal prestressing technology.
8, a kind of super-section centripetal-stress resistance to deformation culvert pipe according to claim 1 and 2 is characterized in that the shrinkage joint of described culvert pipe body (1) seals with rubber fastening band (21), and the body of vertical making seals with the rubber seal ring.
9, a kind of preparation technology of super-section centripetal-stress resistance to deformation culvert pipe is characterized in that comprising the following steps:
The making of first step concrete outer lining (25): behind shield machine or the good culvert body of hand excavation, the net sheet with φ 6-φ 12 reinforcement fabrications is fixed on the external wall of culvert pipe (23), the good cylinder type combination of support exterior sheathing is built crack concrete outer lining (25);
Second step was removed the combination exterior sheathing: after treating that outer lining concrete (25) solidifies, remove the combination exterior sheathing, and forward impelling in order, connect next pipeline section of construction and other pipeline section;
The making of the 3rd step rubber and plastic separation layer (22): with high-elastic, high pressure resistant, ageing-resistant rubber and plastic synthetic materials, the technology making rubber and plastic separation layer (20) that utilizes spraying or paste;
The making of the 4th step cylinder type skeleton: press working condition requirement length 10-15 mitron section, make cylinder type skin skeleton (2), middle level skeleton (4), nexine skeleton (8) respectively, and link into an integrated entity with reinforcing bar radially;
The making of the 5th step dextrorotation bobbin (3), derotation bobbin (4): in the inboard of outer dermoskeleton frame (2) or outside distribution dextrorotation, derotation bobbin, and put on steel strand (17) respectively, install helping of each position and draw ground tackle (18) at bobbin (3,4);
Right tiltedly bobbin (10) of the 6th step, the tiltedly making of bobbin (11) of a left side: in the both sides or the outside of middle level skeleton (2), distribution diagonal cross bobbin, and vertical bobbin that distributes in the outside of nexine skeleton (12), in each pipe, put on steel strand (17) respectively, reserve anchor hole and install the fixedly ground tackle of origin or beginning and the ground tackle (16) of stretch-draw end;
The installation of the 7th step culvert pipe inner formword:, and reserve anchor hole at each position of inner formword and install respectively to help and draw ground tackle (18) and tension ground tackle (16) at culvert pipe inner support combined type inner formword;
The installation of the 8th step end face template: determine the internal diameter and the external diameter of end face template according to the internal diameter size of culvert pipe body (1), and the reserved steel bar joint, and and inner formword connect together;
The 9th step was built culvert pipe body (1) concrete: use the high pressure mortar pump toward the interior concreting of pipeline section template, and smash moulding by the technological requirement shake;
The tenth step stripping, stretch-draw anchor: culvert pipe body (1) concrete strength reaches 70% when above, removes inner formword, installs tensioner, divides the priority stretch-draw anchor by vertical oblique hoop;
The 11 step vacuum is built, the pressurization sealing off and covering anchorage: each bobbin is evacuated, injects the high-mark cement slurry that adds expansion agent, accelerating admixture with high-pressure pump respectively, and flat reserving the anchor hole envelope after pressurizeing with the special cement slurry;
The connection of the 12 step prestressed reinforcement: connect oblique, vertical steel strand (17) with connector,, repeat above-mentioned steps one to step 11 and make second pipeline section and other pipeline section with sleeve connection lengthwise rib (5,9,14);
The making at the 13 step culvert pipe body (1) shrinkage joint, end (24): when the continuous body that constitutes of pipeline section reaches design length, one end of rubber fastening band (21) is built in the end of culvert pipe body (1), and the some culvert pipe bodies (1) that repeat like this to make have formed waterline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100124306A CN100564804C (en) | 2005-03-25 | 2005-03-25 | Super-section centripetal-stress resistance to deformation culvert pipe and preparation technology thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100124306A CN100564804C (en) | 2005-03-25 | 2005-03-25 | Super-section centripetal-stress resistance to deformation culvert pipe and preparation technology thereof |
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| CN1837580A CN1837580A (en) | 2006-09-27 |
| CN100564804C true CN100564804C (en) | 2009-12-02 |
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Cited By (1)
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| US11619047B2 (en) * | 2019-08-19 | 2023-04-04 | Raymond Alan Low | Braided multi-axial sleeve system used as a structural reinforcement for concrete columns and method for constructing concrete columns |
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| CN103256061B (en) * | 2013-04-15 | 2015-04-22 | 辽宁工程技术大学 | Coal-mining roadway scour-preventing and energy-absorbing combined metal support and assembly method |
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| CN109837990B (en) * | 2019-01-17 | 2020-06-19 | 中国水利水电科学研究院 | Annular anchor cable type prestressed concrete cylinder shell structure and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11619047B2 (en) * | 2019-08-19 | 2023-04-04 | Raymond Alan Low | Braided multi-axial sleeve system used as a structural reinforcement for concrete columns and method for constructing concrete columns |
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| CN1837580A (en) | 2006-09-27 |
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Owner name: HENGSHUI FUZHONGDA PIPE CO., LTD. Free format text: FORMER OWNER: CHANGJIANG PRESTRESS CO., LTD., HENGSHUI Effective date: 20131212 |
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Effective date of registration: 20131212 Address after: Park Zhao circle of circular economy 053000 Hengshui city in Hebei province (North Taocheng District Park Road) Patentee after: Hengshui Zhongda Pipeline Company Limited Address before: 053000 No. 111 middle Daqing Road, Hebei, Hengshui Patentee before: Changjiang Prestress Co., Ltd., Hengshui |
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