CN1811252B - Super large flow pre-stressed water-saving pipeline and its production process - Google Patents
Super large flow pre-stressed water-saving pipeline and its production process Download PDFInfo
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- CN1811252B CN1811252B CN 200610012439 CN200610012439A CN1811252B CN 1811252 B CN1811252 B CN 1811252B CN 200610012439 CN200610012439 CN 200610012439 CN 200610012439 A CN200610012439 A CN 200610012439A CN 1811252 B CN1811252 B CN 1811252B
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Abstract
The present invention is super large flow pre-stressed water-saving pipeline and its production process. The pipeline includes a concrete pipe body and a cylindrical skeleton comprising ring ribs and longitudinal ribs inside the pipe body. The cylindrical skeleton consists of an outer layer skeleton, a middle layer skeleton and an inner layer skeleton, the outer layer skeleton has circular tube, the middle layer skeleton has inclined tube, the inner layer skeleton has longitudinal tube, and there are triangular connecting frame in the connection of pipe bodies and high pressure extension joint in the butt connection of pipe bodies. The present invention adopts new transverse pre-stressed connection technology to form multifunctional bearing structure system, and the pipeline has raised shear resisting, twisting resisting, earthquake resisting, displacement resisting and deposition resisting performance and can meet the requirement as large flow water pipeline.
Description
Technical field
The present invention relates to a kind of super large flow pre-stressed water-saving pipeline and preparation process thereof.
Technical background
Because the variation of the big regional environment of society, the restriction of geological condition, the enlightened canal in traditional level land, depression frame aqueduct, the form of construction work of fast Fang Han of passing by on one's way crosses the river, do not satisfy the needs of " south water to north " super-huge water diversion project,, should carry out " engineering structure innovation " for this reason, the Diversion Project from Luanhe to Tianjin that the eighties, Tianjin was built, the open channel location is damaged because of engineering, and water pollution has changed underground dark culvert water delivery into, diversion of water from the Yellow River to Tianjin water transfer in the past few years, cause is oozing of road along the river, leak, disappear, consumption, the water that can guide to Tianjin has only 50% of total amount, fact proved that " the engineering structure innovation " of large-scale delivery water project is very important.
Project of South-to-North water diversion is because of being subjected to the influence of conventional process techniques, and East Route Project is confined to enlightened canal at present, and the retaining dykes and dams are built lock and contained old mode, and work centerline also is confined to enlightened canal, the frame aqueduct, and the research of old pattern is contained in the side of building.The work centerline Hebei water transfer section of meeting an urgent need for satisfying the requirement of water flow, has been taked Fang Han is strengthened design method in parallel, because of not adopting prestressed structure, has formed traditional scale engineering.
Super large flow pre-stressed water-saving pipeline has adopted the new mode of ring-like netted prestressed structure, has formed the new architecture of prestressed structure.Project of South-to-North water diversion if can adopt this new architecture, can save material, resource and vast land resources, can prolong the working life of engineering, can form the engineering resource that can continue.
Summary of the invention
Technical problem to be solved by this invention provides a kind of resist displacement, the super large flow pre-stressed water-saving pipeline of anti-sedimentation, antidetonation and preparation process thereof.
The present invention adopts following technological scheme:
The present invention includes concrete tube body and be arranged on the cylinder frame of making by ring muscle and vertical muscle in the body, it is characterized in that described cylinder frame is by outer skeleton, middle level skeleton and nexine skeleton constitute, be fixed with the circular arc bobbin on the outer skeleton, be fixed with the oblique bobbin of diagonal cross on the skeleton of middle level, the outside of nexine skeleton is fixed with vertical bobbin, be provided with the steel strand that produce centripetal-stress through stretch-draw in the circular arc bobbin, the both sides of body are provided with the connecting band that has preformed hole, the connecting band two sides is provided with the fixedly ground tackle of steel strand, be provided with in the oblique bobbin by the fixing steel strand that produce oblique stress through stretch-draw of ground tackle, vertically be provided with in the bobbin by the fixing steel strand that produce longitudinal stress through stretch-draw of ground tackle, be provided with the load-bearing positioning table in the body bottom, place in parallel is provided with the triangular shape link press span at body, is provided with the high pressure expansion joint at the body joint.
The present invention is set with the equally distributed circular arc bobbin of the outer skeleton of ring on outer skeleton, be provided with one or more steel strand through stretch-draw generation centripetal-stress in the circular arc bobbin, and fixedly the ground tackle of steel strand is arranged on the outside of body.
Be provided with the middle level skeleton in the outer skeleton of the present invention, the outside or inboard being provided with at the middle level skeleton are the oblique bobbin that intersection distributes, a left side is oblique, right tiltedly bidirectional crossed through drawing the oblique prestressed steel strand of generation around the home to be provided with the endless tube body in oblique bobbin, is provided with the fixedly ground tackle of steel strand in the body end.
The present invention is provided with the nexine skeleton in the skeleton of the middle level of body, arranged outside at the nexine skeleton has vertical bobbin, vertically being provided with one or more steel strand in the bobbin, be provided with the fixedly connection ground tackle of steel strand in the end of body through stretch-draw generation longitudinal prestressing.
Scribble the plastic tube of lubricant oil in the effective pipe of arc tube of the present invention, be provided with in plastic tube through stretch-draw and produce prestressed steel strand, the arc bobbin is provided with single or many plastic tubes is set.
The oblique bobbin of the present invention and vertical bobbin are provided with the steel strand that produce longitudinal prestressing through stretch-draw with the plastic tube that scribbles lubricant oil in the inwall in plastic tube.
Body of the present invention connects into 6-180 rice long pipeline.
The present invention is provided with the load-bearing positioning table in the bottom of body, is provided with the shock insulation layer between load-bearing positioning table and body, is provided with concrete cushion below the load-bearing positioning table.
The present invention is provided with the triangular shape link press span that is used for the body parallel connection at body place in parallel, in body place in parallel triangular shape link press span, be provided with afterburning hole, in afterburning hole, be provided with one or more and produce prestressed steel strand, be provided with the fixedly ground tackle of steel strand in end, body joint through stretch-draw.
The present invention is provided with the high pressure expansion joint at the pipeline joint, and the place is provided with the high pressure waterstop at the high pressure expansion joint.
Super large flow pre-stressed water-saving pipeline preparation process is as follows:
The making of first step load-bearing positioning table: by the absolute altitude requirement, build blinding concrete in the foundation trench of holding successfully, make the load-bearing positioning table after the initial set, body in parallel is made the load-bearing positioning table simultaneously in the parallel lines starting point;
The second step support outer moulding board: on the load-bearing positioning table, the outer moulding board of body in parallel utilizes the body end plate to connect, and is fixed on the load-bearing positioning table body outer moulding board support;
The 3rd step carcasing: make the outer skeleton of body, middle level skeleton and nexine skeleton with Twisted Steel;
The 4th step is bobbin fixedly: be fixed on the outer skeleton penetrating steel strand in the circular arc bobbin, be fixed on the skeleton of middle level penetrating steel strand in the oblique bobbin, be fixed on the nexine skeleton penetrating steel strand in vertical bobbin, then the nexine skeleton, the middle level skeleton packs in the outer skeleton in order, and the parallel transistor body and function connects the triangular shape link press span parallel skeleton is connected together;
The 5th step support outer moulding board: inner formword adopts automatic supported, utilizes the body end plate that inner and outer template is connected together;
The 6th step was built moulding: the concrete that stirs is injected in the pipe die by sequence of construction with high-pressure service pump, and moulding is smash in shake;
The 7th step stretch-draw anchor: treat that the body concrete strength reaches at 70% o'clock, carry out hoop stretch-draw by technological requirement, oblique stretch-draw, vertically stretch-draw, each position stretching force uses ground tackle the hoop steel strand after reaching standard, oblique steel strand, vertically steel strand anchoring respectively, stretch-draw is carried out by technological requirement in the afterburning hole of parallel pipeline joint, steel strand is fixed with ground tackle in the end;
The 8th step grouting sealing off and covering anchorage: use cement slurry the circular arc bobbin, oblique bobbin, vertical bobbin, preformed hole, all fill with high-pressure service pump in afterburning hole, flat the anchor hole envelope with cement slurry;
The form removal maintenance of the 9th step: concrete strength reaches at 90% o'clock body template complete removal, carries out maintenance by technological requirement;
The construction continuously of the tenth step: carry out the making of second tube coupling by above sequence of construction after first tube coupling or parallel transistor tube coupling are finished, production reaches 180 meters length continuously;
The 11 step was installed decompressor: according to the operating mode technical requirements, the internal pressure that high head produces is provided with decompressor;
The 12 step was installed the high pressure waterstop: body reaches when length is set, and by job specfication the high pressure waterstop is installed, and working pressure can reach more than the 3.0MPa;
The 13 step was made the high pressure expansion joint: with the high pressure waterstop body counterpart is connected together, reach high voltage bearing standard, parallel pipeline adopts two circle high pressure waterstops to connect, and constructing continuously in the body expansion joint, or reserves the back and making separately; Shock insulation layer 15 is pressed working condition requirement, and the antidetonation grade is provided with.
Good effect of the present invention is as follows: the present invention can be by working condition requirement, preferential design pipe structure, body adopts ring-like cancellated new mode, elder generation is to concrete tube body prestressing before body bears external load, impel overall structure to form centripetal-stress, thereby can offset because all or part of tensile stress that interior external load produces guarantees that the cracking under tensile stress and the action of pulling stress does not appear in established centripetal-stress body.The special warfare that the new technology that adopts longitudinal prestressing to connect is connected with oblique prestressing force is connected into the overlength pipeline by the working condition requirement tube coupling, strengthened pipeline shearing resistance, bending resistance, anti-twist performance, possessed whole resist displacement, the condition of anti-sedimentation, antidetonation.Adopt the extraordinary new process of transverse prestress parallel connection, two or many pipelines are connected together, formed multi-functional supporting structure system, strengthened that the disjunctor pipeline is distinctive to be cut before anti-, anti-twist, antiseismic, resist displacement, the ability of anti-sedimentation can satisfy the requirement of engineering of project of South-to-North water diversion trunk line, big zone, big flow, large-scale many body system water transfer.Can reach the high level of Automatic Control water, the trunk line of project of South-to-North water diversion or major project if can adopt super-flow centripetal-stress water-saving pipeline, can save material resources because of having reduced engineering work load, because of having formed new architecture, can save a large amount of waterpower resourses, because of having changed water-carriage mode, the large-area land resources of regenerating.Comprehensively estimate, can save over ten billion or hundred million yuan of funds of hundreds of for project of South-to-North water diversion.
Description of drawings
Accompanying drawing 1 is pipe structure schematic representation of the present invention.
Accompanying drawing 2 is the accompanying drawing 1A-A of the present invention place cross section view vertical with the body medial axis.
Accompanying drawing 3 is provided with the positioning table schematic representation for body of the present invention.
Accompanying drawing 4 is single steel strand bobbin schematic representation of the present invention.
Accompanying drawing 5 is three steel strand schematic representation of the present invention.
Accompanying drawing 6 is single steel strand overcoat plastic tube schematic representation of the present invention
Accompanying drawing 7 is body side connecting band anchoring steel strand schematic representation for the present invention
Accompanying drawing 8 is the schematic representation that circular arc bobbin of the present invention and body medial axis are provided with in vertical direction.
Accompanying drawing 9 is the schematic representation of rotation direction setting for body circular arc bobbin of the present invention and body medial axis.
Accompanying drawing 10 is body parallel-connection structure schematic representation of the present invention.
Accompanying drawing 11 is for body of the present invention and connect cross-sectional end view.
Accompanying drawing 12 is for body of the present invention and connect place's triangular shape link press span cross sectional representation.
Accompanying drawing 14 for circular arc bobbin on the pipeline outer-layer skeleton of the present invention at inboard wall of tube body anchoring schematic representation.
Accompanying drawing 15 is load-bearing positioning table schematic representation of the present invention.
Accompanying drawing 16 is connecting line connection diagram of the present invention.
Accompanying drawing 17 is for the inner anchoring of three bodys of the present invention and connect schematic representation.
Accompanying drawing 13 is pipeline profile side elevation schematic representation of the present invention.
In the accompanying drawings: 1 body, 2 outer skeletons, 3 circular arc bobbins, 4 middle level skeletons, 5 oblique bobbins, 6 connecting lines, 7 nexine skeletons, 8 vertical bobbins, 9 steel strand, 10 ground tackles, 11 preformed holes, 12 steel strand, 13 ground tackles, 14 connecting bands, 15 shock insulation layers, 16 load-bearing positioning tables, 17 bed courses, 18 link press spans, 19 afterburning holes, 20 construction lines, 21 pipelines, 22 decompressors, 23 high pressure expansion joints, 24 high pressure waterstops.
Embodiment
Below in conjunction with embodiment the present invention is done detailed argumentation:
As shown in Figure 1, the present invention includes concrete tube body 1 and be arranged on and make outer skeleton 2, middle level skeleton 4 and nexine skeleton 7 by ring muscle and vertical muscle in the body 1, be fixed with circular arc bobbin 3 on the outer skeleton 2, be fixed with oblique bobbin 5,6 on the middle level skeleton 4, nexine skeleton 7 is fixed with vertical bobbin 8, outer skeleton 2 and body connecting band 14 usefulness reinforcing bars are provided with vertical muscle and U-shaped muscle and outer skeleton 2 and connect together in connecting band, preformed hole 11 distributes at the connecting band end face.
Shown in accompanying drawing 1,3, the inboard of the present invention's 1 internal and external layer skeleton 2 in body or arranged outside have on outer skeleton (2) and are set with circular arc bobbin 3, in the circular arc bobbin, be provided with and form the corresponding center of circle that intersects more than the endless tube body half-turn, be installed with in the circular arc bobbin through correspondence through drawing the steel strand 12 that produce ring orientation prestress, the upper and lower of body both sides connecting band 14 is provided with fixing to just intersecting the ground tackle 13 of steel strand 12.
Shown in accompanying drawing 1,2,3, the outside or the inboard of the middle level skeleton 4 that the present invention is provided with in body 1, or 5,6 fens left sides of the oblique bobbin that is provided with of innner and outer side tiltedly, the right side is tiltedly bidirectional crossed, forms netted.In oblique bobbin 5,6, be provided with the connection ground tackle 9 of steel strand 10, connect the steel strand 10 that ground tackle can anchoring body 1 end face, can also connect the steel strand 9 in the oblique bobbin 5,6 of next pipeline section.
Shown in accompanying drawing 1,2,3, the present invention has in vertical bobbin 8 in the arranged outside of the nexine bobbin 7 that is provided with in body 1, the steel strand 9 that are provided with through stretch-draw generation longitudinal prestressing, be provided with the fixedly connection ground tackle 10 of steel strand 9 in the end of body 1, with connecting the fixedly steel strand of body 1 end of ground tackle, can also connect the steel strand 9 of vertical bobbin of lower tube section.
Shown in accompanying drawing 1,3, the present invention is provided with load-bearing positioning table 16 in the bottom of body 1, is provided with bed course 17 in the bottom of load-bearing positioning table, is provided with shock insulation layer 15 between load-bearing positioning table 16 and body 1.
Shown in Fig. 1,4,5, circular arc type bobbin 3 that the present invention is provided with in body 1 and oblique bobbin 5,6 also have vertical bobbin 8, are provided with one or more steel strand.
Shown in accompanying drawing 1,6, the circular arc bobbin 3 that the present invention's handle is provided with in body 1, oblique bobbin 5,6, vertically bobbin 8 scribbles lubricant oil in the available inwall, is with the plastic tube of steel strand 9 in pipe.
Shown in accompanying drawing 1,7, be provided with circular arc bobbin 3 at body 1, steel strand 12 are set in circular arc bobbin 3, the connecting band that is provided with in the body both sides after corresponding the intersection respectively in the anchoring of upper and lower position.
Shown in accompanying drawing 1,8, body 1 medial axis of the circular arc bobbin 3 that the present invention is provided with in body 1 in vertical direction, endless tube body 1 is uniform.
Shown in accompanying drawing 1,10, the present invention is dextrorotation or derotation direction in circular arc bobbin 3 and body medial axis that body 1 is provided with, and the endless tube body is uniform.
Shown in accompanying drawing 1,11, setting of the present invention can be large and small the same 3 inside and outside footpaths, and the body 1 that body 1 structure is the same is connected in parallel, and also can connect together many bodys 1 in the same way.
Shown in accompanying drawing 1,11, setting of the present invention 3 bodys 1 have been connected in parallel on is provided with load-bearing positioning table 16 in the bottom of body 1, is provided with concrete cushion 17 in the bottom of load-bearing positioning table 16, is provided with shock insulation layer 17 between body 1 and load-bearing positioning table 16.Place in parallel is provided with afterburning hole 19 at body.
Shown in accompanying drawing 1,12, the present invention is provided with afterburning hole 19 at body 1 place in parallel, can be used for the balance body vertically, transverse stress.1 place in parallel is provided with special-purpose triangular shape link press span 18 in parallel at body, can be used for connecting body 1 structure.
Shown in accompanying drawing 1,13, the present invention is provided with decompressor 22 on body top, in work progress with oblique connection with vertically be connected technology, body 1 is connected into overlength pipeline 21,21 counterpart places are provided with high pressure expansion joint 23 at pipeline, at 23 places, high pressure expansion joint, be provided with high pressure waterstop 24.
Shown in accompanying drawing 14,15,16, the steel strand in the arc bobbin 3 of the present invention are in the inboard wall of tube body anchoring, and the ground tackle of adjacent two steel strand is connected by connecting line 6.
Hoop bobbin 3 of the present invention can be fixed on the inboard or the outside of outer skeleton 2, also can encircle the corresponding stretch-draw anchor that intersects of skeleton, also can one enclose stretch-draw anchor, also rotatable multi-turn stretch-draw anchor around the home.Half-turn is provided with the metal bellows of using of corresponding intersection stretch-draw anchor, and the available inwall of single-turn or multi-turn rotation stretch-draw anchor scribbles the plastic tube of lubricant oil.
Steel strand of the present invention are the high strength low relaxed steel strand that become by many high-tensile steel wires plying phase wringings, described circular arc bobbin, vertically bobbin can adopt metal bellows also can select for use inwall to scribble the plastic tube of lubricant oil, described metal bellows is to use thickness 0.38mm, width is the steel band of 35mm, the semicircle bobbin that rolls into machinery, with what be rolled into again after rolling into, the plastic tube that is surrounded by steel strand is made with special warfare, as press prestressed construction technology and divide, steel strand in the metal bellows belong to the bonding prestress muscle, and the prestressed tendon in the plastic tube belongs to no bonding prestress muscle.
Load-bearing positioning table 16 of the present invention is to be used for the fondational structure that body 1 is made, the one, and in order to adapt to special complex geological conditions, the 2nd, for the flatness of body 1, the construction of straightness accuracy.Bed course is for auxilliary flat the foundation trench foundation, is convenient to the construction of load-bearing positioning table 16, is convenient to the parallel connection of body 1.
Connection anchoring of the present invention is special single hole ground tackle or porous ground tackle, and function is to be used for the anchoring steel strand earlier, after be used to connect the steel strand of next tube coupling, can connect into the overlength pipeline that reaches 180 meters to some tube couplings.
Connection triangular shape link press span of the present invention is made of metallic material, is in order to reinforce the parallel connection of body 1, to impel circumference stress, and the transverse stress configuration rationally reaches the whole purpose of offsetting of local pressure.
High pressure waterstop of the present invention is made with composite material, forms by pressure-bearing part and hermetic unit, the machine shaping of usefulness special warfare, pressure can reach more than the 3.0Mpa in the body, guarantees water leakage phenomenon can not occur.
The internal diameter of body 1 of the present invention is a 5-10 rice, wall thickness is a 0.30-0.55 rice, duct length is a 10-180 rice, with the preparation internal diameter is 8 meters, long 10 meters, pipe thickness is 0.45 meter and is example, its sequence of construction is as follows: at first be the making of skeleton, select for use the Twisted Steel of different size to make outer skeleton 2, middle level skeleton 4, nexine skeleton 7 respectively, steel strand are penetrated circular arc bobbin 3, oblique bobbin 5,6, vertical bobbin 8 respectively.Circular bobbin 3 is fixed on the outer skeleton 2, oblique bobbin 5,6 are fixed on the middle level skeleton 4, vertical bobbin 8 is fixed on the nexine skeleton 7, be placed on sequentially in the template of body 1 after above-mentioned whole skeletons and bobbin fixed, the concreting that stirs in the body template, reach sequentially and require shake to smash moulding, when body inner concrete intensity reaches 70%, install the ground tackle at body 1 each position, distinguish stretch-draw hoop steel strand 12 sequentially, oblique steel strand 9, vertical steel strand 9, distinguish anchoring with ground tackle after reaching the stretching force value, with vacuum pump being evacuated in the bobbin, inject high-grade cement slurry sequentially respectively, has irritated the slurry back and anchor hole is sealed put down, according to according to technical requirements form removal maintenance.
Body 1 of the present invention can be provided with disjunctor pipeline 13 by working condition requirement, water flow size, can two the pipeline parallel connection also can many pipeline parallel connections, sequence of construction can be by the parallel simultaneously construction of the technical requirements of single pipe.The body joint with the special-purpose triangular shape link press span that connects the cannon born frame and connect together.
Electrical path length 7-180 rice in the body 5-10 rice of the present invention can be by working condition requirement, and water flow pressure is provided with decompressor, the high pressure expansion joint that is provided with at pipeline counterpart place, and the making of can constructing continuously also can sectional making.
Inwall of the present invention scribbles the plastic tube of lubricant oil, because of being no bonding prestress muscle, hale finish after, with the fixing back of ground tackle sealing off and covering anchorage, do not need grouting.
The present invention can satisfy in the project of South-to-North water diversion, the waterline of owner's main line south super-flow section, the needs of training works, can reach the purpose of water saving pollution treatment, environmental protection, the waterline that can also be used for main line middle part engineering, river, river, the inverted-siphon engineering on road, also can be used for passage over strait, subway engineering also can be used for the pollution treatment engineering, municipal engineering.
Preparation process of the present invention is described as follows in conjunction with the embodiments:
The making of first step load-bearing positioning table: in the foundation trench of holding successfully,, build blinding concrete, make the load-bearing positioning table after the initial set, and the connecting leg body is made the load-bearing positioning table simultaneously in the parallel lines starting point by the absolute altitude requirement;
The second step support outer moulding board: on the load-bearing positioning table, and the outer moulding board of connecting leg body utilizes the body end plate to connect, and is fixed on the load-bearing positioning table body outer moulding board support;
The 3rd step carcasing: make body outer skeleton, middle level skeleton and nexine skeleton with Twisted Steel.
The 4th step is bobbin fixedly: be fixed on the outer skeleton penetrating steel strand in the hoop bobbin.Be fixed on the skeleton of middle level penetrating steel strand in the oblique bobbin, be fixed on the nexine skeleton penetrating steel strand in vertical bobbin, the nexine skeleton, the middle level skeleton packs in the outer skeleton in order then, and connecting leg body and function connection triangular shape link press span connects together parallel skeleton;
The 5th step support outer moulding board: inner formword adopts automatic supported, utilizes the body end plate that inner and outer template is connected together;
The 6th step was built moulding: the concrete that stirs is injected in the pipe die by sequence of construction with high-pressure service pump, and moulding is smash in shake;
The 7th step stretch-draw anchor: treat that the body concrete strength reaches at 70% o'clock, carry out hoop stretch-draw by technological requirement, oblique stretch-draw, vertically stretch-draw, each position stretching force uses ground tackle the hoop steel strand after reaching standard, oblique steel strand, vertically steel strand anchoring respectively, and the afterburning hole of joint, connecting leg road carries out stretch-draw by technological requirement, steel strand fixed with ground tackle in the end;
The 8th step grouting sealing off and covering anchorage: use cement slurry the hoop bobbin, oblique bobbin, vertical bobbin, preformed hole, all fill with high-pressure service pump in afterburning hole, flat the anchor hole envelope with cement slurry;
The form removal maintenance of the 9th step: concrete strength reaches at 90% o'clock body template complete removal, carries out maintenance by technological requirement;
The continuously construction of the tenth step: first tube coupling or and the connecting leg tube coupling carry out the making of second tube coupling by above sequence of construction after finishing, can produce continuously and reach 180 meters length;
The 11 step was installed decompressor: according to the operating mode technical requirements, the internal pressure that high head produces is provided with decompressor;
The 12 step is by adorning the high pressure waterstop: body reaches when length is set, and by job specfication the high pressure waterstop is installed, and working pressure can reach more than the 3.0MPa;
The 13 step was made the high pressure expansion joint: with the high pressure waterstop body counterpart is connected together, reach high voltage bearing standard, and the connecting leg road can adopt two circle high pressure waterstops to connect, can construct continuously in the body expansion joint, also can reserve the back in making separately;
Claims (2)
1. super large flow pre-stressed water-saving pipeline, it comprises concrete tube body (1) and is arranged on the cylinder frame of being made by ring muscle and vertical muscle in the body (1), it is characterized in that described cylinder frame is by outer skeleton (2), middle level skeleton (4) and nexine skeleton (7) constitute, be fixed with circular arc bobbin (3) on the outer skeleton (2), be fixed with the oblique bobbin (5) of diagonal cross on the middle level skeleton (4), the outside of nexine skeleton is fixed with vertical bobbin (8), be provided with the steel strand (12) that produce centripetal-stress through stretch-draw in the circular arc bobbin (3), the both sides of body (1) are provided with the connecting band (14) that has preformed hole (11), connecting band (14) two sides is provided with the fixedly ground tackle (13) of steel strand (12), be provided with in the oblique bobbin (5) by the fixing steel strand (9) that produce oblique stress through stretch-draw of ground tackle, vertically be provided with in the bobbin (8) by the fixing steel strand (9) that produce longitudinal stress through stretch-draw of ground tackle, be provided with load-bearing positioning table (16) in the body bottom, place in parallel is provided with the triangular shape link press span (18) that is used for the body parallel connection at body (1), in body place in parallel triangular shape link press span, be provided with afterburning hole (19), in afterburning hole (19), be provided with one or more and produce prestressed steel strand (9) through stretch-draw, be provided with the fixedly ground tackle (10) of steel strand (9) in body (1) end, joint, be provided with high pressure expansion joint (23) at pipeline (21) joint, locate to be provided with high pressure waterstop (24) in high pressure expansion joint (23).
2. a super large flow pre-stressed water-saving pipeline preparation process according to claim 1 is as follows:
The making of first step load-bearing positioning table: by the absolute altitude requirement, build blinding concrete in the foundation trench of holding successfully, make the load-bearing positioning table after the initial set, body in parallel is made the load-bearing positioning table simultaneously in the parallel lines starting point;
The second step support outer moulding board: on the load-bearing positioning table, the outer moulding board of body in parallel utilizes the body end plate to connect, and is fixed on the load-bearing positioning table body outer moulding board support;
The 3rd step carcasing: make the outer skeleton of body, middle level skeleton and nexine skeleton with Twisted Steel;
The 4th step is bobbin fixedly: be fixed on the outer skeleton penetrating steel strand in the circular arc bobbin, be fixed on the skeleton of middle level penetrating steel strand in the oblique bobbin, be fixed on the nexine skeleton penetrating steel strand in vertical bobbin, then the nexine skeleton, the middle level skeleton packs in the outer skeleton in order, and parallel transistor body and function triangular shape link press span connects together parallel skeleton;
The 5th step support outer moulding board: inner formword adopts automatic supported, utilizes the body end plate that inner and outer template is connected together;
The 6th step was built moulding: the concrete that stirs is injected in the pipe die by sequence of construction with high-pressure service pump, and moulding is smash in shake;
The 7th step stretch-draw anchor: treat that the body concrete strength reaches at 70% o'clock, carry out hoop stretch-draw by technological requirement, oblique stretch-draw, vertically stretch-draw, each position stretching force uses ground tackle the hoop steel strand after reaching standard, oblique steel strand, vertically steel strand anchoring respectively, stretch-draw is carried out by technological requirement in the afterburning hole of parallel pipeline joint, steel strand is fixed with ground tackle in the end;
The 8th step grouting sealing off and covering anchorage: use cement slurry the circular arc bobbin, oblique bobbin, vertical bobbin, preformed hole, all fill with high-pressure service pump in afterburning hole, flat the anchor hole envelope with cement slurry;
The form removal maintenance of the 9th step: concrete strength reaches at 90% o'clock body template complete removal, carries out maintenance by technological requirement;
The construction continuously of the tenth step: carry out the making of second tube coupling by above sequence of construction after first tube coupling or parallel transistor tube coupling are finished, production reaches 180 meters length continuously;
The 11 step was installed decompressor: according to the operating mode technical requirements, the internal pressure that high head produces is provided with decompressor;
The 12 step was installed the high pressure waterstop: body reaches when length is set, and by job specfication the high pressure waterstop is installed, and working pressure can reach more than the 3.0MPa;
The 13 step was made the high pressure expansion joint: with the high pressure waterstop body counterpart is connected together, reach high voltage bearing standard, parallel pipeline adopts two circle high pressure waterstops to connect, and constructing continuously in the body expansion joint, or makes separately after reserving again; Shock insulation layer (15) is pressed working condition requirement, and the antidetonation grade is provided with.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610012439 CN1811252B (en) | 2006-02-24 | 2006-02-24 | Super large flow pre-stressed water-saving pipeline and its production process |
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| CN 200610012439 CN1811252B (en) | 2006-02-24 | 2006-02-24 | Super large flow pre-stressed water-saving pipeline and its production process |
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| CN1811252A CN1811252A (en) | 2006-08-02 |
| CN1811252B true CN1811252B (en) | 2010-10-06 |
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| CN102995660B (en) * | 2012-12-21 | 2015-07-22 | 张双里 | Multifunctional arched combined prestress underground pipe gallery for cisty and preparation process thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3950465A (en) * | 1972-07-27 | 1976-04-13 | Amey Roadstone Corporation Limited | Concrete pipes |
| CN2469291Y (en) * | 2001-04-13 | 2002-01-02 | 衡水泰昌预应力有限公司 | Large diameter prestress concrete water pipe |
| CN1648506A (en) * | 2005-01-28 | 2005-08-03 | 衡水长江预应力有限公司 | Super large caliber centripetal stress high pressure water transport pipe and its preparing process |
| CN1648505A (en) * | 2005-01-28 | 2005-08-03 | 衡水长江预应力有限公司 | Large caliber oblique stress high strength water transport pipe and its preparing process |
-
2006
- 2006-02-24 CN CN 200610012439 patent/CN1811252B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3950465A (en) * | 1972-07-27 | 1976-04-13 | Amey Roadstone Corporation Limited | Concrete pipes |
| CN2469291Y (en) * | 2001-04-13 | 2002-01-02 | 衡水泰昌预应力有限公司 | Large diameter prestress concrete water pipe |
| CN1648506A (en) * | 2005-01-28 | 2005-08-03 | 衡水长江预应力有限公司 | Super large caliber centripetal stress high pressure water transport pipe and its preparing process |
| CN1648505A (en) * | 2005-01-28 | 2005-08-03 | 衡水长江预应力有限公司 | Large caliber oblique stress high strength water transport pipe and its preparing process |
Non-Patent Citations (1)
| Title |
|---|
| CN 2469291 Y,全文. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1811252A (en) | 2006-08-02 |
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