CN101105068A - Siphon type rainwater discharging system construction technique - Google Patents

Siphon type rainwater discharging system construction technique Download PDF

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Publication number
CN101105068A
CN101105068A CNA2007100548891A CN200710054889A CN101105068A CN 101105068 A CN101105068 A CN 101105068A CN A2007100548891 A CNA2007100548891 A CN A2007100548891A CN 200710054889 A CN200710054889 A CN 200710054889A CN 101105068 A CN101105068 A CN 101105068A
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CN
China
Prior art keywords
roof
roof drain
pipe
installation
roofing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2007100548891A
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Chinese (zh)
Inventor
焦安亮
王水木
冯安辉
陈泽君
贾飞宏
黄延铮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Construction Seventh Engineering Bureau Shanghai Corp Ltd
China Construction Seventh Engineering Division Corp Ltd
Third Construction Co Ltd of China Construction Seventh Engineering Division Corp Ltd
Original Assignee
China Construction Seventh Engineering Bureau Shanghai Corp Ltd
Third Construction Co Ltd of China Construction Seventh Engineering Division Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Construction Seventh Engineering Bureau Shanghai Corp Ltd, Third Construction Co Ltd of China Construction Seventh Engineering Division Corp Ltd filed Critical China Construction Seventh Engineering Bureau Shanghai Corp Ltd
Priority to CNA2007100548891A priority Critical patent/CN101105068A/en
Publication of CN101105068A publication Critical patent/CN101105068A/en
Pending legal-status Critical Current

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Abstract

A construction process for siphonic rainwater drainage system is provided, which comprises prefabrication and pre-embedment of a building main body, installation of roof rain strainer, installation of suspended pipeline and stand pipeline, and installation of underground pipeline. Before the installation of roof rain strainer, a supporter frame is fabricated and fixed on a bearing structure in the proper position with high firmness. The roof rain strainer is installed at the lowest point of the roof or gutter, and has 1-10 m distance to the roof edge. The number of rain strainer in each rainwater accumulation zone is at least two, and the distance between the two rain strainers are not larger than 20 m. The invention has the advantages that the siphonic rainwater drainage system is fixed mechanically, can ensure the leak-proof connection between the rain strainer and roof and has excellent anti-corrosive performance, the number of rain strainer, drainage pipe and rainwater inspection well is reduced; the ceiling space is saved; the intersection of various fields is reduced; the construction space is saved; and the siphonic rainwater drainage system has high mechanical strength, easy construction and high quality.

Description

Siphon type rainwater discharging system construction technique
Technical field
The present invention relates to a kind of siphon type rainwater discharging system construction technique.
Background technology
The hydrocone type storm-water system since being born in Europe, rely on its vent flow big, expend tubing few, save architectural space and reduce outstanding advantages such as ground excavation, developed rapidly in the world and updated.In China, along with large span, large-area building increase day by day, the requirement of architectural space are improved constantly, some airports and exhibition hall etc. are architectural successfully use after, the siphon storm-water system is also developed rapidly.The roof drain that the hydrocone type storm-water system relies on hydrocone type is realized gas-water separation when the gutter depth of water reaches certain degree of depth, utilize the potential energy that height and rainwater had of building roofing, when the rainwater continuous stream changes rain leader downspout over to and falls through rain pipe, form siphonage, and in this place's pipeline, form peak suction.Thereby enter the siphon state, whole pipe presents flowing full, realize its rapidly, drain function efficiently.This system generally is made up of hydrocone type roof drain, tubing (hanging pipe, standpipe, discharge pipe), pipe fitting, fixture, construct traditionally and have that system's band roof drain quantity is many, standpipe quantity is many, caliber is big, underground pipe is many, earthwork excavated volume is big, horizontal tube needs the gradient, flow system flow is little, numerous standpipes (system) and slope requirement, take a large amount of architectural spaces, be unfavorable for the shortcomings such as requirement of modern architecture architectural space.
Summary of the invention
The purpose of this invention is to provide that a kind of material uses less, architectural space takies less, good seal performance, long service life, drainability rapidly, the siphon type rainwater discharging system construction technique of simpler, the time and labour saving of construction.
For achieving the above object, the present invention adopts following technical scheme: siphon type rainwater discharging system construction technique, comprise the work of civil engineering main body set aside pre-embedded, the rain water on roof bucket is installed, hanging pipe and standpipe are installed, the underground pipe installation procedure, need before the described rain water on roof bucket installation procedure to make and mounting bracket, support should be fixed on the load-carrying members, correct position, bury underground firmly, roof drain is installed in the minimum point of roofing or gutter, roof drain is 1m~10m apart from the distance at roofing edge, the roof drain quantity of each watershed is no less than two, and the spacing between two roof drains is no more than 20m.
When described system connect a plurality of hydrocone type roof drain, the roof drain drainage connecting pipe should be connected on the hanging pipe, must not directly be connected on the top of rain leader downspout; The hydrocone type roof drain that inserts same hanging pipe should be at same roofing absolute altitude; The gutter starting point degree of depth should be determined the gutter gradient 〉=0.003 according to the depth of water before the bucket of catchment area, the gradient and the hydrocone type roof drain of roofing; To note in the work progress must not leaving over foreign material, charges or packaging material in the roof drain, remove the sealing compound that flows in the short tube, other parts are installed again, in order to avoid stop up; To pour water after system's installation, flushing test.
The invention has the advantages that the hydrocone type roof drain adopts the mode of mechanical fixation, can guarantee the sealing that roof drain is connected with roofing, have excellent corrosion resistance, need not to do antirust processing during installation.Pipe drainage realizes full-section pipe-flow, saves quantity such as roof drain, gutter, rainwater inspection well; Save the ceiling void simultaneously, also reduced the intersection between each specialty, save more architectural spaces, make architectural appearance attractive in appearance, thereby save construction fund.Hydrocone type storm-water system mechanical strength height, construction is simple.And be pressure flow, pipeline is difficult for stopping up.Process stipulation of the present invention the construction technology of roof drain, horizontal suspension pipe, discharge pipe, guarantee that hydrocone type storm-water system construction quality meets " building water supply and drainage and heating health construction quality standards of acceptance " (GB500243-2003) and " siphonic roof storm system application technology rules " (CECS) requirement.
Description of drawings
Figure 1 shows that process chart of the present invention;
Figure 2 shows that siphon type rainwater discharging system of the present invention connects total figure;
Figure 3 shows that cast-in-situ steel reinforced concrete roofing first type roof drain scheme of installation;
Figure 4 shows that the B-mode roof drain scheme of installation of cast-in-situ steel reinforced concrete roofing;
Figure 5 shows that steel plate or the interior first type of corrosion resistant plate gutter (eaves gutter) roof drain scheme of installation;
Figure 6 shows that B-mode roof drain scheme of installation in steel plate or the corrosion resistant plate gutter (eaves gutter);
Figure 7 shows that cast iron or cast aluminium pressure flow hydrocone type roof drain structural representation;
Figure 8 shows that stainless steel pressure flow hydrocone type roof drain structural representation.
The specific embodiment
As shown in Figure 1, 2, adopt technology of the present invention to carry out need doing preparation of construction before the siphon type rainwater discharging system construction:
1, conscientiously examines drawing, pass floor and shear wall place reserving hole at pipeline.When roof structure is constructed; the cooperation embedment for Civil Works meets roof drain installation hole or directly the roof drain seat is embedded in the roofing concrete together with the protection screw; should reserve roofing leveling layer thickness (reserved location should be executed figure according to axis, absolute altitude and water and accurately make the position of reserving the hole with reference to civil engineering figure) when pre-buried.
2, rack making is installed:
Corresponding tubing carries out rack making according to standard, designing requirement to be installed, and should note:
1.. during piping erection fixture should be set, fixture must be able to bear the weight of flowing full pipeline and the impact force that high-velocity flow produced.To the HDPE pipe-line system, the axial stress that produces when fixture also answers extraction duct to expand with heat and contract with cold.
2.. fixture 26 should require to be provided with according to various tubing, and the position is accurate, buries underground smooth, tight with tube contacts, but must not damage pipe surface.
3.. fixture 26 should adopt and the supporting pipe special fixed system of hydrocone type rain water on roof exhaust system.Nexine and skin all should be zinc-plated.Be not less than the application life of hydrocone type rain water on roof exhaust system its application life.
4.. pipe-hanger support should be fixed on the load-carrying members, and correct position is buried underground firmly.
5.. pipeline, suspension bracket spacing and requirement is set will satisfies code requirement.
6. the .HDPE hanging pipe adopts the square bar conduit to fix.The size of square bar conduit such as the regulation of table 1.Square duct is suspended on the fabric structure along the HDPE hanging pipe, and the HDPE hanging pipe then adopts guiding pipe clamp and anchoring pipe clamp to be connected on the square bar conduit.
Table 1 square bar conduit size
The HDPE external diameter of pipe Square bar conduit size
DN40-DN200 30*30
DN250-DN315 40*60
7. the fixed support operated by rotary motion of .HDPE pipe hanging pipe is at the top of transverse tube, the two ends and the arm place of terminal and threeway, when HDPE hanging pipe caliber during greater than DN250 each fixed point should adopt two anchoring pipe clamps.
8. the anchoring pipe clamp spacing of .HDPE pipe standpipe is 5m to the maximum, and guiding pipe clamp spacing is 15 times of externals diameter of pipe to the maximum.When the distance of the lower end of hydrocone type roof drain and hanging pipe during, increasing by two side direction pipe clamps on the square bar conduit or on the hanging pipe more than or equal to 750mm.
The siphon type rainwater discharging system of installation as shown in Figure 2.
3, roof drain is installed:
3.1 general requirements
3.1.1 hydrocone type roof drain 4 should be arranged on the minimum point of roofing or gutter, the roof drain quantity of each watershed is no less than 2.Spacing between two roof drains 4 is no more than 20m.Roof drain 4 is not less than 1m apart from the distance at roofing edge, and is not more than 10m.
3.1.2 hydrocone type roof drain 4 should reliably be connected with pipe-line system with roofing or gutter.
3.1.3 when system connect a plurality of hydrocone type roof drain 4, roof drain drainage connecting pipe 30 should be connected on the hanging pipe 27, must not directly be connected on the top of rain leader downspout 28.
3.1.4 inserting the hydrocone type roof drain 4 of same hanging pipe 27 should be at same roofing absolute altitude.
3.1.5 the gutter starting point degree of depth should be determined according to the depth of water before the bucket of catchment area, the gradient and the hydrocone type roof drain of roofing.The gutter gradient should not be less than 0.003.
3.1.6 note must not leaving over foreign material, charges or packaging material etc. in the roof drain 4, remove the sealing compound that flows in the short tube, other parts are installed again, in order to avoid stop up.
3.2 cast-in-situ steel reinforced concrete rain water on roof bucket is installed
Shown in Fig. 3,4, roof drain 4 is installed in roofing 8 waterproof constructions and finishes, and roof drain is installed hole 1 bottom surface and laid waterproofing mortar and pre-embedded bolt 2; spin off protection screw 3 during installation; surface clean is clean, install the supporting screw rod of roof drain 4, load onto O-ring seal 5.The water inlet height of roof drain 4 will guarantee that rainwater can want level to install by roof drain 4 emptyings and roof drain 4 in the gutter 6, at roof drain the grate 7 that cast iron or cast aluminium are installed in hole 1 surface is installed at last.8 on roof drain 4 and roofing are connected by bolt 2 fixation clips among Fig. 3; 8 on roof drain 4 and roofing are connected by flange 9 fixation clips among Fig. 4.When roofing 8 is laid flexible waterproof sheet coiled material is holed at the screw position place.With the coiled material pressure ring, air register, rainwater honeycomb screen are fixed on the roof drain seat with nut.Regulate the adjusting screw(rod) and the standing screw on air register top as requested.As be concrete roof, should lay 1 square metre (each 1 meter of length and width), thick 50mm, diameter cobble around the roof drain greater than 12mm.
3.3 the interior roof drain of steel plate or corrosion resistant plate gutter (eaves gutter) is installed (shown in Fig. 5,6)
Be installed in the roof drain in steel plate or the corrosion resistant plate gutter (eaves gutter), can adopt the weldering of argon fluorine to be welded to connect with gutter (eaves gutter).When roof drain is connected with storm sewer,, can adopt flange switching or stainless steel lathe dog to connect as the material difference.In steel plate shown in Figure 5 or corrosion resistant plate gutter (eaves gutter) in the first type roof drain scheme of installation, die mould is adopted and is provided with insulation layer 10 and water barrier 12 between plate 11 and the roofing, roof drain is installed the hole bottom surface and is provided with reinforced bulkhead 15, roof drain is installed in the hole and is provided with insulation 13,14, and roof drain 4 closely links together by the waterproofing course 18 of waterproof flange 9 with the gutter surface.In steel plate shown in Figure 6 or corrosion resistant plate gutter (eaves gutter) in the B-mode roof drain scheme of installation, die mould is adopted and is provided with insulation layer 10 and water barrier 12 between plate 11 and the roofing, roof drain is installed the hole bottom surface and is provided with reinforced bulkhead 15, roof drain is installed in the hole and is provided with insulation 13,14, roof drain 4 closely links together by the waterproofing course 18 of waterproof pressing plate 19 with the gutter surface, connect the surface and be provided with twice waterproof roll bonding crack 17, and smear waterproof sealing cream 16.
4 piping erection (as shown in Figure 2):
4.1 general provision
1.. storm sewer should be installed by the position of design code, and hanging pipe 27 should not established the gradient.
2.. should inspection hole be set by designing requirement on the rain leader downspout 28, inspection hole center to center distance ground 1.0m.When adopting high density polyethylene (HDPE) (HDPE) pipe, the maximum of inspection hole is provided with spacing and is not more than 30 meters.
3.. hanging pipe 27 and standpipe 28, standpipe 28 and 2 45 ° of elbows of connecting bend employing of discharge pipe 29 or 90 ° of elbows of R 〉=4D.Roof drain 4 drainage connecting pipes 30 should be connected on the hanging pipe 27, must not directly be connected on the top of rain leader downspout 28.
4.. the rainwater pipe passes wall and floor should be provided with plastics or metal sleeve.Sleeve pipe in the floor, its top should exceed decorative ground 20mm.The bottom is equal with soffit.Sleeve pipe in the wall, its two ends are equal with decorative cover.Tamp with fire-retardant compact material in slit between sleeve pipe and the pipeline.
5.. in the installation process, the open ports of pipeline and roof drain should be taked the shutoff measure.
6.. suspension system should avoid passing through building settlement seam shrinkage joint.In the time can't avoiding because of field condition, should consider the degree of disturbing of different tubing according to the characteristics of system's tubing, take corresponding measure.
4.2HDPE pipe is installed
1. the HDPE pipe adopts hot melt butt welding connection or electro-fusion sleeve to connect.
2. the HDPE pipe adopts the pipe cutter cutting, and otch should use the electric smelting pipe collar perpendicular to tube hub on the HDPE horizontal tube of suspention, cooperate installation with fixture.
3. the butt joint of HDPE pipe hot melt connects: two PE tubing that connect will be installed be placed on the heat melting device anchor clamps (anchor clamps can be changed according to the caliber size that will install and press from both sides watt) simultaneously, every tubing other end is with pipe holder picking-up same horizontal plane extremely.Respectively tube end face is cut smoothly with the electronic cutter that revolves, guaranteed that two tubing contact surfaces can be fully identical.Electric boiling plate is warming up to 210 degrees centigrade, places in the middle of two tube end faces, the operation electro hydraulic gear makes both ends of the surface contact heating simultaneously fully with electric hot plate.After heating reaches requirement, take out heating panel, operate hydraulic means once more, make two tube end faces of fusion fully dock and lock hydraulic means (preventing bounce-back).Tubing curling thickness, docking time all will satisfy the material technology requirement during heating, generally the technical data that can provide with reference to producer.
4. electric smelting connects: insert PE tubing in the electric melting pipe fittings fully, two leads of special-purpose electric smelting machine are connected the electric melting pipe fittings positive and negative polarities respectively, connect power supply, the heating wire heating with being embedded in the electric melting pipe fittings makes electric melting pipe fittings and tubing contact position material be fused into one after heating.
5 underground pipes are installed (as shown in Figure 2):
5.1 because system pressure is bigger, discharge pipe should adopt cast iron pipe or HDPE pipe.
5.2 bury burying the degree of depth and should below frost line, should considering the load on pipeline top of ground rainwater pipe 29.
5.3 cast iron pipe can be laid immediately on the original soil ground without disturbance, when undesirable, answers laying depth to be not less than the sand cushion of 100mm in the pipe trench bottom.
5.4HDPE pipe is laid on the sand cushion that the interior shop of pipe trench one layer thickness of general soil property is not less than 100mm, brush two roads and be stained with the knot agent penetrating pipe end position that manhole contacts with the borehole wall, and roll on coarse sand, then with cement bonded sand grout into, prevent to leak, the bottom pipe bent position of rain leader downspout should be established the concrete buttress or be taked firm fixation.
6 pour water, flushing test:
Must do water filling test 6.1 bury the ground section of tubing before hidden, can be hidden after the pass the test.
6.2 roof drain must be done water filling test to roof or gutter after installing.Block all roof drains during test, pour water to roof or gutter.Water level should flood roof drain, continues 1 hour, and roofing or gutter should be non-leakage around the roof drain, for qualified.
6.3 storm sewer should be done water filling test after installing.Pouring water highly must be to the roof drain on each system top.The highrise building sectional of pouring water carries out.After the full water 15min water surface descends, fill and observe 5min, liquid level does not fall, and the mouth of pipe and interface leakproof are qualified.
6.4 rainwater main riser, horizontal tube and main all should be done flushing test, draining should unimpeded nothing be stopped up.
Tubing should adopt cast iron pipe, steel pipe (coating steel pipe, stainless steel tube) and HDPE tube material among the present invention.Be used for being connected short tube and should adopting identical material of the tubing of same system and pipe fitting and hydrocone type roof drain.Roof drain should adopt the hydrocone type roof drain through the waterpower test, and has vortex eliminator, and as shown in Figure 7, roof drain body 23 tops are provided with kuppe 20, and the bottom is provided with rectifier 24, links to each other with roofing by set bolt 21, and the junction is provided with waterproof pressing plate 22.As shown in Figure 8, roof drain body 23 tops are provided with kuppe 20, and the bottom is provided with rectifier 24, links to each other with roofing by waterproof flange 25.Its contact chip material of hydrocone type roof drain that is arranged on the roofing should be corresponding with roof waterpoof material.Can adopt stainless contact chip for the roofing that adopts pitch as waterproofing materials.The hydrocone type roof drain that is arranged in the gutter should be with brace, and the brace material should be determined according to the gutter material.

Claims (2)

1. siphon type rainwater discharging system construction technique, comprise that the work of civil engineering main body set aside pre-embedded, the installation of rain water on roof bucket, hanging pipe and standpipe are installed, the underground pipe installation procedure, it is characterized in that: need before the described rain water on roof bucket installation procedure to make and mounting bracket, support should be fixed on the load-carrying members, correct position, bury underground firmly, roof drain is installed in the minimum point of roofing or gutter, roof drain is 1m~10m apart from the distance at roofing edge, the roof drain quantity of each watershed is no less than two, and the spacing between two roof drains is no more than 20m.
2. siphon type rainwater discharging system construction technique as claimed in claim 1 is characterized in that: when described system connect a plurality of hydrocone type roof drain, the roof drain drainage connecting pipe should be connected on the hanging pipe, must not directly be connected on the top of rain leader downspout; The hydrocone type roof drain that inserts same hanging pipe should be at same roofing absolute altitude; The gutter starting point degree of depth should be determined the gutter gradient 〉=0.003 according to the depth of water before the bucket of catchment area, the gradient and the hydrocone type roof drain of roofing; To note in the work progress must not leaving over foreign material, charges or packaging material in the roof drain, remove the sealing compound that flows in the short tube, other parts are installed again, in order to avoid stop up; To pour water after system's installation, flushing test.
CNA2007100548891A 2007-08-02 2007-08-02 Siphon type rainwater discharging system construction technique Pending CN101105068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2007100548891A CN101105068A (en) 2007-08-02 2007-08-02 Siphon type rainwater discharging system construction technique

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Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
CN101105068A true CN101105068A (en) 2008-01-16

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877604A (en) * 2012-10-10 2013-01-16 成张佳宁 Construction method for siphon rainwater drainage system
CN103850402A (en) * 2014-02-27 2014-06-11 浙江海天建设集团有限公司 Construction process for siphon rainwater system
CN104018624A (en) * 2014-06-10 2014-09-03 江苏省华建建设股份有限公司 Drainage system for roof truss girder and construction process thereof
CN104975685A (en) * 2015-06-29 2015-10-14 广西青龙化学建材有限公司 Walkable roof heat preservation and thermal insulation drainage plate and drainage system and construction method thereof
CN105421683A (en) * 2016-01-06 2016-03-23 南通沪望塑料科技发展有限公司 Collection method and construction technology for pds zero-gradient protection siphon drainage
CN109707117A (en) * 2018-12-13 2019-05-03 中铁二局集团电务工程有限公司 A kind of construction technology of siphon type rainwater discharging system
CN110387939A (en) * 2019-07-16 2019-10-29 上海一建安装工程有限公司 A kind of installation method of suspension type storm sewer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102877604A (en) * 2012-10-10 2013-01-16 成张佳宁 Construction method for siphon rainwater drainage system
CN103850402A (en) * 2014-02-27 2014-06-11 浙江海天建设集团有限公司 Construction process for siphon rainwater system
CN103850402B (en) * 2014-02-27 2016-01-06 浙江海天建设集团有限公司 Hydrocone type storm-water system construction technology
CN104018624A (en) * 2014-06-10 2014-09-03 江苏省华建建设股份有限公司 Drainage system for roof truss girder and construction process thereof
CN104975685A (en) * 2015-06-29 2015-10-14 广西青龙化学建材有限公司 Walkable roof heat preservation and thermal insulation drainage plate and drainage system and construction method thereof
CN105421683A (en) * 2016-01-06 2016-03-23 南通沪望塑料科技发展有限公司 Collection method and construction technology for pds zero-gradient protection siphon drainage
CN109707117A (en) * 2018-12-13 2019-05-03 中铁二局集团电务工程有限公司 A kind of construction technology of siphon type rainwater discharging system
CN110387939A (en) * 2019-07-16 2019-10-29 上海一建安装工程有限公司 A kind of installation method of suspension type storm sewer

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Open date: 20080116