CN207597488U - A kind of prefabricated crossbeam support system of sea intake - Google Patents
A kind of prefabricated crossbeam support system of sea intake Download PDFInfo
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- CN207597488U CN207597488U CN201721349725.7U CN201721349725U CN207597488U CN 207597488 U CN207597488 U CN 207597488U CN 201721349725 U CN201721349725 U CN 201721349725U CN 207597488 U CN207597488 U CN 207597488U
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Abstract
The utility model is related to a kind of prefabricated crossbeam support system for marine intake construction, which is used to support the crossbeam for placing water intaking gravity flow pipeline on it, including：It includes and passes through the lattice column of crossbeam, the three pairs of bored concrete piles set in the both sides of the centre of crossbeam and both ends from crossbeam both sides respectively, lower support beam is set up between each pair of bored concrete pile, the main bearing beam for directly supporting crossbeam and the vertical consistency of its longitudinal direction and crossbeam is placed on lower support beam, steelframe is set up respectively in the top of the lattice column at crossbeam both ends, the both ends of steelframe are connect with the bored concrete pile positioned at crossbeam both sides, are connected positioned at the top of two bored concrete piles of the same side of crossbeam also by steelframe.The utility model corrodes for the prefabricated crossbeam support system stable structure of marine intake construction, tolerable sea beat and salinity.
Description
Technical field
The utility model is related to a kind of prefabricated crossbeam support systems of marine intake.
Background technology
Prior art discloses the construction methods of several intakes.
Chinese patent CN104452699A discloses a kind of intake construction method of presetting system, and this method step is as follows：
Approach channel is first excavated in the diversion tunnel intake position of construction, then irrigating gate surrounding rock mass is handled；Then one is excavated
Duan Shuiping tunnels simultaneously carry out lining cutting；Tunnel import is blocked in the preset concrete cock body of tunnel import, can be to advise from now in this way
The diversion works drawn has been carried out to be prepared in advance.Using the present invention, due to irrigating gate surrounding rock body before preset rock cock body
It being handled, is generally not in the danger of slump of coming down when carrying out chock blasting in stable state, safety is good,
The diversion works construction period in later stage is shortened, is reduced investment outlay, and is easy to the implementation of chock blasting.
Chinese patent CN104074234A discloses inland river water intaking mouth structure and its construction of a kind of power plant cycle water system
Method, structure include pile foundation and water intake, and a plurality of spud pile that the pile foundation is inserted in inland river riverbed by burying is formed, all fixed
The upper end of stake is in same level；The water intake is integral type armored concrete framework structure, is set in the bottom of water intake
There is installation groove corresponding with pile foundation spud pile, water intake is fixedly mounted on using the direct snapping of the installation groove in pile foundation, shape
Into sealed sump；Water inlet and water outlet are equipped in the side wall of water intake, the water inlet is located at sealed sump
Top, water outlet is located at the lower part of sealed sump, and water outlet is connected with intake pipe, forms sealed rigid inland river water intaking
Mouth structure.Invention additionally discloses the construction method of its structure, the structural stability is good, ensures that structure is safe and reliable, construction method
The advantageous effects such as scheme is simple, is conducive to accelerate construction progress.
The above method is chiefly used in river or lake water intaking, marine since stormy waves is big, for intake head construction stability
There is tightened up requirement.
Utility model content
The purpose of this utility model is to meet marine intake structural stability requirement, is provided a kind of for marine intake
The prefabricated crossbeam support system of construction, the prefabricated crossbeam support system are used to support the horizontal stroke for placing water intaking gravity flow pipeline on it
Beam, including：It includes and passes through the lattice column of crossbeam, three couple set in the both sides of the centre of crossbeam and both ends from crossbeam both sides respectively
Bored concrete pile sets up lower support beam between each pair of bored concrete pile, places to directly support crossbeam and it is vertical on lower support beam
To the main bearing beam of the vertical consistency with crossbeam, steelframe, the both ends of steelframe are set up respectively in the top of the lattice column at crossbeam both ends
It connect with the bored concrete pile positioned at crossbeam both sides, is connected positioned at the top of two bored concrete piles of the same side of crossbeam also by steelframe.
Further, it is equipped with hanging ring in the top of the crossbeam.
The utility model further provides the marine intake construction method using above-mentioned prefabricated crossbeam support system, should
Method includes the following steps：
(A) water intake pumping station foundation pit is excavated；
(B) in water intake pumping station foundation pit Temporary Cofferdam is constructed by the side of approximately level；
(C) implement water intake conduit foundation trench between cofferdam and pump house foundation pit after cofferdam is built up to excavate, be carried out in cofferdam after excavation
Civil construction and equipment installation；
(D) implement the demolition blasting of cofferdam one time after civil engineering, installation in cofferdam are fully completed, carry out foundation trench of fetching water outside cofferdam
Waterborne section of foundation trench excavates；
(E) water-fetching head is constructed, and including installation piles set into rock (i.e. steel-pipe pile), crossbeam is installed on piles set into rock,
The installation water intaking gravity flow pipeline on crossbeam；
(F) it is encapsulated under water using plain concrete after the completion of water intaking gravity line Pipe installing, trench backfill is carried out after encapsulating.
In step (A), pumping plant excavation of foundation pit is excavated using multi level slope, such as three-level side slope and level-one can be set to put down
Platform, first order slope height 8m, second level slope excavating to tufa stone top surface, third level side slope is from tufa stone top surface to natively
Face.
In step (E), water-fetching head sets 3-10 framed bent, and each framed bent includes two piles set into rock, and bored concrete pile is pre-
Steel latticework, top setting prefabricated crossbeam or cast-in-place crossbeam are buried, respectively piece steel-pipe pile of setting is used as support in piles set into rock both sides
Stake, lateral I-steel (such as I32 I-steel) is flat at the top of steel-pipe pile connects, thereon spandrel girder (such as the Two bors d's oeuveres H40 types of steel construction
Steel), grout pile concrete is then poured,
Preferably, the crossbeam in step (E) is mounted in the above-mentioned prefabricated crossbeam support system of the utility model, described pre-
Cross beam support system processed includes passing through the lattice column (steel latticework) of crossbeam, in the centre of crossbeam from crossbeam both sides respectively as described above
And three couples (six roots of sensation) bored concrete pile (steel-pipe pile diameter 600-1000mm, preferably from about 800mm) that the both sides at both ends are set, each pair of perfusion
Lower support beam (such as I32 I-steel) is set up between stake, places on lower support beam to directly support crossbeam and it is vertical
To the main bearing beam (such as Two bors d's oeuveres [36 channel steels) of the vertical consistency with crossbeam, frame is distinguished in the top of the lattice column at crossbeam both ends
If steelframe (such as Two bors d's oeuveres H40 shaped steel), the both ends of steelframe are connect with the bored concrete pile positioned at crossbeam both sides, positioned at the same side of crossbeam
Two bored concrete piles top also by steelframe (such as I32 I-steel) connect.Pass through support system as setting, Ke Yichang
Phase resists sea beat, and holding structure is stablized.
Further, it is equipped with hanging ring in the top of crossbeam.
In the plain concrete encapsulating of step (F), sea is poured using mixer ship.Commercial Concrete may be used in concrete, by C35
Underwater concrete mixing, concrete is thick, fine aggregate should use the good rubble of grading, medium coarse sand, and sand factor preferably uses 0.4~
0.5, cement must not use shaft kiln cement and intensity is not lower than 42.5, and gel material content is not preferably less than 350Kg/m3, and water
Mud dosage is no less than 300Kg/m3, slump control is in 18 ± 2cm.Bank dypass domain concrete is transported with tank car, automobile pump truck
Enter mould pouring construction, poker vibrator vibrates.Sea is poured using mixer ship.Concrete pump must be first checked before concrete placings
Transfer pipeline ensures waterproof.
Further, intake pipe uses anode loss protection, and anode can be at the horizontal diameter line both sides of intake pipe and bottom
Part cloth, anode spacing can be 9-10m, can also be in the horizontal diameter line both sides of intake pipe and horizontal diameter line both sides
Obliquely downward (such as at the angle of 45 degree of horizontal diameter line both sides), anode spacing can be 11-13m.
The advantages of the utility model：
The prefabricated crossbeam support system stabilization firm in structure for marine intake construction of the utility model, tolerable sea
Wave impact and salinity corrosion.
Description of the drawings
Fig. 1 is intake schematic diagram, wherein 1 being water intake pumping station, 2 being Blasting Excavation area, 3 be bank slope line, and 4 be water intaking corridor
Road, 5 be intake head, and 6 be Temporary Cofferdam, and 7 be material harbour.
Fig. 2 is prefabricated crossbeam support system stereogram.
Fig. 3 is the prefabricated crossbeam support system vertical view of the utility model；Wherein 10 be crossbeam, and 11 be bored concrete pile, and 12 are
Lattice column (steel latticework), 13 be lower support beam, and 14 be main bearing beam, and 15 be steelframe, and 16 be steelframe, and 17 be hanging ring.
Fig. 4 is for a kind of mounting means schematic diagram of gravity line sacrificial anode for gravity flow pipeline of fetching water.
Fig. 5 is for gravity line pipeline self pipe sacrificial anode another kind mounting means schematic diagram of fetching water.
Specific embodiment
The utility model is further illustrated below in conjunction with attached drawing.
As shown in Figure 1, water intake pumping station 1 is built near bank slope line 3, the connection water intaking gallery 4 of water intake pumping station 1 is taking intake
The junction of pump works 1 and water intaking gallery 4 is Blasting Excavation area 2, and the front of water intaking gallery 4 is intake head 5, in water intaking corridor
Temporary Cofferdam 6 is built between road 4 and intake head 5.
As shown in Figure 2,3, the crossbeam for being used to support marine intake and placing water intaking gravity flow pipeline of the utility model
Prefabricated crossbeam support system includes passing through the lattice column (steel latticework) 12 of crossbeam from 10 both sides of crossbeam respectively, in the centre of crossbeam and
Three couples (six roots of sensation) bored concrete pile (steel-pipe pile diameter 600-1000mm, preferably from about 800mm) 11 that the both sides at both ends are set, each pair of perfusion
Lower support beam (such as I32 I-steel) 13 is set up between stake, placed on lower support beam 13 for directly support crossbeam and
The main bearing beam (such as Two bors d's oeuveres [36 channel steels) 14 of its longitudinal direction and vertical consistency of crossbeam, in the top of the lattice column at crossbeam both ends
Steelframe (such as Two bors d's oeuveres H40 shaped steel) 16 is set up respectively, and the both ends of the steelframe 16 are connect with the bored concrete pile 11 positioned at crossbeam both sides, position
It is connected in the top of two bored concrete piles 11 of the same side of crossbeam also by steelframe (such as I32 I-steel) 15.By setting this
The support system of sample, can resist sea beat for a long time, and holding structure is stablized.
Further, it is equipped with hanging ring 17 in the top of crossbeam.
Marine intake construction method using the prefabricated crossbeam support system of the utility model includes the following steps：
(A) water intake pumping station foundation pit is excavated；
(B) in water intake pumping station foundation pit Temporary Cofferdam is constructed by the side of approximately level；
(C) implement water intake conduit foundation trench between cofferdam and pump house foundation pit after cofferdam is built up to excavate, be carried out in cofferdam after excavation
Civil construction and equipment installation；
(D) implement the demolition blasting of cofferdam one time after civil engineering, installation in cofferdam are fully completed, carry out foundation trench of fetching water outside cofferdam
Waterborne section of foundation trench excavates；
(E) water-fetching head is constructed, and including installation piles set into rock (i.e. steel-pipe pile), crossbeam is installed on piles set into rock,
The installation water intaking gravity flow pipeline on crossbeam；
(F) it is encapsulated under water using plain concrete after the completion of water intaking gravity line Pipe installing, trench backfill is carried out after encapsulating.
In step (A), pumping plant excavation of foundation pit is excavated using multi level slope, such as three-level side slope and level-one can be set to put down
Platform, first order slope height 7-9m, preferably from about 8m, second level slope excavating to tufa stone top surface, third level side slope is from tufa stone
Top surface is to ground.Water intake pumping station excavation of foundation pit area about 3000-8000m2, preferably from about 5100m2, excavation bottom absolute altitude -5~-
8m, preferably from about -6.7m.
Since water intake conduit is arranged on seawater bottom (bottom absolute altitude such as -5.15m), water intake conduit finally will also be with pump house master
Machine connects, and therefore, from pump house excavation of foundation pit, water intake conduit slot excavates, pump house civil engineering, equipment installation and intake pipe segmentation installation etc.
Consider, Blasting Excavation can divide 3 stages, 4 regions to carry out：
Three phases explosion：
First stage；Pump house foundation pit and using cofferdam as line of demarcation water intake conduit outermost foundation trench excavate, treat other than cofferdam
After water intake conduit foundation trench has excavated field, then implement cofferdam construction.
Second stage：Implement water intake conduit foundation trench between cofferdam and pump house foundation pit after cofferdam is built up to excavate.
Phase III：Implement the demolition blasting of cofferdam one time after civil engineering, installation in cofferdam are fully completed.
4 burst regions divide：Outside pump house foundation pit, cofferdam underwater water intake conduit foundation trench excavate, water intake conduit base in cofferdam
Slot excavates and cofferdam demolition.In step (E), water-fetching head sets 3-10 framed bent, and each framed bent includes two piles set into rock,
The pre-buried steel latticework of bored concrete pile, top setting prefabricated crossbeam or cast-in-place crossbeam, a steel-pipe pile is respectively set in piles set into rock both sides
As support stake, at the top of steel-pipe pile, lateral I-steel (such as I32 I-steel) is flat connects, thereon spandrel girder (the Two bors d's oeuveres H40 of steel construction
Shaped steel), then pour grout pile concrete.
Step (F) middle cross beam is mounted in prefabricated crossbeam support system as described above.In step (F), gravity line of fetching water
DN1800, DN1000 intake pipe may be used in road, and DN1800 gravity flow intake pipe total length about 206m, DN1000 gravity flow intake pipes are total
Length about 197m, water intaking gravity line bottom absolute altitude is between about -3.0~-4.9.
The intake pipe that flows automatically uses welded still pipe, standard Q235B, and A series may be used in caliber, and steel pipe can be in Zhi Zhuan factories
Processing and fabricating, single gravity flow intake pipe land can be spliced into 50 meters long four sections of tube couplings, flanged joint be used in every section, in factory
Two end flanges sealing plates are welded, are connected when every section of gravity line is assembled under water using Hough, in gravity flow pipe outer wall welding steel before installation
Plate, to overlap continuous chlorination pipe holder, flange bolt, nut use two-phase stainless steel material.Water intaking gravity line tube coupling
It is lightered by tablet to construction site, the cooperation diving under water installation of 80t crane barges.Pipeline outer wall is encapsulated using plain concrete, in pipeline
Wall uses heavy antisepsis, and using anode loss protection.
Steel Welded Joint will carry out mechanical test, and reach standard, and steel pipe seam is continuous helical weld seam.Steel
Pipe surface must not have the defects of crack, bubble, delamination or interlayer, and all weld seams of steel pipe conduct a survey.
Preservative treatment may be used, the derusting before steel pipe application should reach Sa2 grades, and surface roughness reaches 60-100 μm,
Anticorrosion coat selects epoxy type anticorrosive paint, bottom during same application is mating, in, finishing coat select same producer's product, coating
There is complete material to prove data.The anticorrosive paint of use should have good weatherability, adapt to alternation of wetting and drying variation, and
With wear-resisting, impact resistance and weather-proof performance.Coating layer thickness meets the requirement (20 years) of Anti-corrosion design service life, and must not
Less than 1500 μm.
Intake pipe can fall in processing factory's harbour and refute, using 1 3000t self propelled barges water transportation to construction site.
Steady stake stent, stent section steel manufacture are set on barge deck, and steel pipe shipment takes branched die square bottom is stupefied to shelve.Steel pipe fills
Ship is gone on board using the directly lifting of loop wheel machine on harbour.
Pipe end is welded in factory with flange, and is welded the inlet valve of diameter 50mm or so on two end-plates respectively
It (closes before lower water) with drain tap, after steel pipe shipping to construction site waterborne, is hung to from pile transport ship steel pipe with 80T crane barges
In water, steel pipe is drawn to foundation trench top and coarse localization with hoist engine, crane barge, then from one end water filling of steel pipe, is opened another
One end valve exhaust, makes steel pipe slowly sink and (adjust drainpipe axis and pipe position at any time), until steel pipe sinks in place.
After steel pipe sinks to pipeline foundation, steel pipe is fixed temporarily using tube socket etc., is then sunk to steel pipe in place
Elevation and axis afterwards carries out an acceptance inspection, qualified after-pouring plain concrete encapsulating.
Anode loss protection may be used in intake pipe.Intake galvanic anode protection ranging from 3 whole water intaking steel
Pipe, the effective protection time limit>20 years.Water intaking gravity line is maked somebody a mere figurehead section (about 55m) inside and outside wall and is protected, and concrete pack section is only examined
Consider inner wall protection, gravity line inside and outside wall galvanic anode protection scheme is as follows：
1., inner wall of the pipe anode mounting arrangements：Anode is buried in groups, and 2 are one group；For DN1800 pipelines, in pipeline
Wall anode is installed in groups, and 2 are one group, and anode installation is spaced about 11.8 meters, and two anodes are mounted on inner wall of the pipe lower half
Point, with pipeline vertical central axis line into the position at 45 degree of angles；For DN1000 pipelines.Inner wall of the pipe anode list is only installed, 2 anodes
10 meters are spaced about, anode is mounted on duct bottom.
2., pipeline outer wall anode mounting arrangements：For DN1800 pipelines, pipeline outer wall anode is installed in groups, and 2 are one
Group, anode installation are spaced about 11 meters；Two anodes are separately mounted to the both sides in pipe level direction.For DN1000 pipelines,
Pipeline outer wall list is only installed, and anode is spaced about 9.2 meters.
3., anode installation number for example can be as shown in the table：
Anode quantity needed for inner wall of the pipe cathodic protection
Intake steel pipe sacrificial anode can be welded when steel tube factory makes.Every piece of sacrificial anode two legs, four
Weld seam, it is desirable that the length of every weld seam>80mm, section of weld joint height>5mm, weld seam is substantially continuous smooth, and width is substantially equal
It is even, without apparent crackle, firm welding.
Anode material can use Al-Zn-In-Mg-Ti alloys, and chemical property meets following requirements：
The chemical property of aluminum alloy anode
Size of anode is, for example, 1200 × (200+280) × 150, and anode weight is 120kg, band steel specification：Using width B
=70, the zinc-coated flat steel sheet of thickness 8mm.
Sacrificial anode installation site should make steel structure surface electric potential uniform is protected to be distributed, and answer generally uniform arrangement, sacrifice
Anode installation site should avoid pipeline-weld when anode is installed, if anode installation position is equipped with obstacle, can suitably adjust installation position
It puts.
The distribution of anode 21 can be with as shown in figure 4, be distributed, between anode in the horizontal diameter line both sides of gravity line 20 and bottom
Can be 9-10m away from d, it can also be as shown in Figure 5 in the horizontal diameter line both sides of gravity line 20 and horizontal diameter line both sides
Obliquely downward (such as at the angle of 45 degree of horizontal diameter line both sides), anode spacing can be 11-13m.
After anode installs, preservative treatment is carried out to weld, it is desirable that identical with steel pipe inner wall anti-corrosion grade；Under anode
The resistance to marine organisms paint of bottom surface brushing twice, other anodes are forbidden to be infected with coating.
Concrete pack can be used after gravity line installs.In the plain concrete encapsulating of step (F), sea uses and stirs
Ship is mixed to pour.Commercial Concrete may be used in concrete, and by C35 underwater concrete mixings, concrete is thick, fine aggregate should use grading good
Rubble well, medium coarse sand, sand factor preferably use 0.4~0.5, and cement must not use shaft kiln cement and intensity be not lower than 42.5,
Gel material content is not preferably less than 350Kg/m3, and cement consumption is no less than 300Kg/m3, slump control is in 18 ± 2cm.Bank
Dypass domain concrete is transported with tank car, and automobile pump truck enters mould pouring construction, and poker vibrator vibrates.It is poured using mixer ship at sea
It builds.Must first be checked before concrete placings concrete pump transfer pipeline ensure it is waterproof.
It, can building security, stable structure, tolerance sea beat and the water intaking of salinity corrosion at sea by above-mentioned steps
Mouth facility.
Claims (2)
1. a kind of prefabricated crossbeam support system for marine intake construction, which is used to support at it
The upper crossbeam for placing water intaking gravity flow pipeline, which is characterized in that it includes：Include the lattice for passing through crossbeam from crossbeam both sides respectively
Column, the three pairs of bored concrete piles set in the both sides of the centre of crossbeam and both ends set up lower support beam, lower part between each pair of bored concrete pile
The main bearing beam for directly supporting crossbeam and the vertical consistency of its longitudinal direction and crossbeam is placed in supporting beam, at crossbeam both ends
The top of lattice column sets up steelframe respectively, and the both ends of steelframe are connect with the bored concrete pile positioned at crossbeam both sides, positioned at the same of crossbeam
The top of two bored concrete piles of side is connected also by steelframe.
2. prefabricated crossbeam support system according to claim 1, which is characterized in that be equipped with and hang in the top of the crossbeam
Ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721349725.7U CN207597488U (en) | 2017-10-17 | 2017-10-17 | A kind of prefabricated crossbeam support system of sea intake |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721349725.7U CN207597488U (en) | 2017-10-17 | 2017-10-17 | A kind of prefabricated crossbeam support system of sea intake |
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| Publication Number | Publication Date |
|---|---|
| CN207597488U true CN207597488U (en) | 2018-07-10 |
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ID=62756205
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| CN201721349725.7U Active CN207597488U (en) | 2017-10-17 | 2017-10-17 | A kind of prefabricated crossbeam support system of sea intake |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876007A (en) * | 2022-04-14 | 2022-08-09 | 东莞市东兴铝业有限公司 | Building aluminum formwork structure |
-
2017
- 2017-10-17 CN CN201721349725.7U patent/CN207597488U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876007A (en) * | 2022-04-14 | 2022-08-09 | 东莞市东兴铝业有限公司 | Building aluminum formwork structure |
| CN114876007B (en) * | 2022-04-14 | 2023-09-29 | 东莞市东兴铝业有限公司 | Building aluminum template structure |
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