CN110258725A - Water works water tank fabrication and installation method - Google Patents
Water works water tank fabrication and installation method Download PDFInfo
- Publication number
- CN110258725A CN110258725A CN201910394179.6A CN201910394179A CN110258725A CN 110258725 A CN110258725 A CN 110258725A CN 201910394179 A CN201910394179 A CN 201910394179A CN 110258725 A CN110258725 A CN 110258725A
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- water tank
- water
- structural unit
- ship
- installation
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Classifications
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
- E03B11/10—Arrangements or adaptations of tanks for water supply for public or like main water supply
- E03B11/14—Arrangements or adaptations of tanks for water supply for public or like main water supply of underground tanks
Abstract
The invention belongs to water works technical field of construction, disclose a kind of water works water tank fabrication and installation method, including five steps: one, water tank structural unit makes；Two, water tank excavation of foundation pit；Three, it is laid with foundation pit bed course；Four, water tank is installed；Five, underwater concrete pouring.Present invention employs mud clear in water, water tanks to divide muti-piece structural unit prefabricated on the coast, then transports to dry point water surface site, carries out in place and assembled method of sinking, and without cofferdam is set up, saves the construction time, reduces construction cost.And underwater assembly is hung in after water tank precast block again, single handling weight is alleviated, the lifting requirement to crane ship is reduced.
Description
Technical field
The invention belongs to water works technical field of construction, and in particular to a kind of water works water tank fabrication and installation
Method.
Background technique
The most city in China there are drinking water sources not up to standard and insufficient water sources phenomenon.To guarantee quality of fetching water,
In waters offshore, water quality is fetched water not at susceptible, such as from the center of rivers farther out for intake setting, then is led under rivers
Intake pipe diversion made of large-diameter steel pipe is crossed to pump house interface, diversion is delivered to each large pumping station, water factory is handled, but
Often there are many mud in water bottom, mud enters intake pipe in order to prevent, the setting installation water intaking generally at intake
Case excludes dry point periphery mud, and the water inlet of water tank is higher than mud, to guarantee drinking water quality.
Water tank generally uses reinforced concrete structure, because its volume is larger, so cofferdam method cast in situs is mostly used,
It first sets up cofferdam around dry point, after the completion of cofferdam construction, the water within the scope of cofferdam is drained, then excavation foundation again
Construction, scene carry out tying up the construction such as muscle, formwork, casting, finally build up water tank.This construction method is long in time limit, at high cost,
Affected by environment big, majority should select the dry season construction operation in waters.It can reduce therefore, it is necessary to developing one kind and apply
Work difficulty guarantees the practicable water tank fabrication and installation construction method of construction quality simultaneously.
Summary of the invention
In order to solve the above-mentioned technical problems, the present invention provides a kind of water works water tank fabrication and installation methods, should
Method the following steps are included:
Step 1: the production of water tank structural unit makes the structural unit resolved by water tank, determines each structure
The suspension centre of unit is made, and it is spare to be grouped number to the structural unit to complete；Water tank designed by engineering is decomposed
At multiple structural units, the quantity of structural unit is determined according to lifting appliance load condition, draws the figure of each structural unit
Paper carries out setting-out, blanking and production by the drawing of structural unit according to the suspension centre for determining structural unit is designed；
Step 2: water tank excavation of foundation pit, the control including marking water tank installation site in waters dry point unwrapping wire
Point, and underwater buoy is set at control point, using grab bucket dredger Dredging operation waterborne, from the mud dug out under water
It is transferred to hopper, mud is transported into specified point by hopper and abandons mud, foundation pit bottom surface elevation and cross dimension is measured, meets the requirements
Afterwards, dredged the decomposed rock into riverbed base with grab bucket dredger, using ship down-the-hole drill carry out it is underwater bore blast hole, at
Powder charge is carried out behind hole immediately, underwater demolition is carried out using blasting network connection, and clear up debris after explosion；
Step 3: being laid with foundation pit bed course, including after the completion of excavation of foundation pit, is laid with and is not less than 20cm thickness rubble, levelling rear shape
At foundation pit bed course；
Step 4: water tank installation, the structural unit including the water tank for making step 1 are first lifted into truck crane
On cargo ship, installation region is transported to cargo ship, then sling structural unit with crane ship sequence and be put under water in place, and realize
It is correctly docked with intake pipe, upper layer and lower layer splicing is with bolt fastening, and then the water inlet of water tank installs steel grating；
Step 5: underwater concrete pouring, including conduit is taken to rush ball construction technology, conduit is erected on buoyancy tank, buoyancy tank with
Ship is connected with heaving pile, and ship is in place, and using water float bowl platform, funnel is at 1 meter of the water surface or more, and concrete pumps on the bank for pump line connection
Vehicle and conduit ship, concrete tank and pump truck are ready, start to fix in water tank bottom concrete placed under water；
Wherein, step 1 with Step 2: step 1 and step 3 without successive.
Preferably, in step 1, if water tank resolves into multi-ply construction unit, structural unit production along the vertical direction
When, lowest level structural unit is first made, second layer structural unit is then made on lowest level structural unit, so successively
Upwards can guarantee the precision of each layer docking, each layer is spliced using tongue and groove in step 4.
Preferably, in step 2, assist tracking sounding instrument to measure bottom absolute altitude using GPS positioning total station, with GPS or
Person's total station measures the accommodation of operation ship, guidance correction accommodation.
Preferably, it in step 3, is constructed using tremie method, is precisely filled out by diver's command and control rubble conduit
The elevation of water tank bottom of foundation ditch is filled and adjusts, after completion rubble conduit feeds intake, diver carries out levelling straight using underwater steel ruler
Reach design requirement to blotter.
Further, in step 3, mode is struck off using ship cooperation diver under water and flattens foundation pit, on ship
It suspends a channel steel in midair or heavy rail hangs down in water, as floating rule, floating rule elevation is controlled using steel cable, is existed under water by diver
Horizontal direction pushes floating rule, reaches leveling foundation pit purpose.
Preferably, it in step 4, hangs in structural unit to pause decentralization, inspection when being higher than installation site 1m in foundation pit
Look into implantation situation, water tank installation site control point install overcasting staff, with total station be accurately positioned mounting coordinate without
Continue to transfer to position, the flatness of control water tank installation after accidentally.
Preferably, in step 5, uniformly slow blanking is needed when pouring water tank lower concrete, prevent water tank by
Concrete pressure is irregular, and water tank local pressure is greater than other positions so that water tank shifts.
Preferably, in step 5, in casting process, diver will feel to submarine inspection, if it find that have mud and
Impurity is cleaned out in time, it is ensured that concrete, which combines, reaches desired strength.
Preferably, in step 5, every 3 hours observation casting concrete elevations when pouring, it is ensured that pour height and meet
Design requirement.
Preferably, this method further includes step 6: periphery riprap work, including fill block stone throwing and throwing paving galvanized wire gabion,
Bank land sets building stones transit depot, and block stone is loaded onto ship using excavator, in foundation trench position, with the direct fill block stone throwing of boat-carrying excavator；
Cage and push track are thrown in setting aboard ship, stone are packed into woven steel wire, are carried out sealing and are formed galvanized wire gabion,
Galvanized wire gabion is pushed into push track after fill block stone throwing, cage is thrown along push track push-in and throws paving galvanized wire gabion；Fill block stone throwing and
Hull is moved along position line when throwing paving galvanized wire gabion, it is ensured that block stone and galvanized wire gabion enter water position；Detecting ensures galvanized wire gabion
Levelness and absolute altitude meet design requirement.
Water works of the invention water tank fabrication and installation method, on the coast using mud, water tank piecemeal clear in water
It is prefabricated, it then transports to dry point water surface site, carries out in place and assembled method of sinking, without cofferdam is set up, save construction
Time reduces construction cost.And underwater assembly is hung in after water tank precast block again, single handling weight is alleviated, is reduced
Lifting requirement to crane ship.
Detailed description of the invention
Fig. 1 is certain project water works water tank fabrication and installation embodiment of the method flow chart；
Fig. 2 is that water tank installs embodiment facade front view；
Fig. 3 is that water tank connect embodiment top view with intake pipe；
Fig. 4 is that water tank installs embodiment facade left view.
In figure: 1- water tank, 101- structural unit；2- intake pipe；3- foundation pit bed course；4- concrete；The periphery 5- jackstone.
Specific embodiment
In order to further illustrate the technical means and efficacy of the invention taken in order to solve the technical problem, below in conjunction with
The invention will be described in further detail for the drawings and specific embodiments, it should be noted that provided attached drawing be it is schematical,
Each other there is no being drawn fully according to size or ratio, thus the drawings and specific embodiments be not intended as the present invention claims
Protection scope limit.
Certain project water works as shown in Figure 1 water tank fabrication and installation method alternative embodiment process, including it is following
Step:
Step 1: the production of water tank structural unit, including water tank is resolved into multiple structural units, project handle takes
Water tank is decomposed into upper layer and lower layer, and every layer corresponds to the structural unit resolved into intake pipe item number equal amount, upper layer and lower layer structure again
It makes between unit using tongue and groove connecting method；The drawing for drawing each structural unit decomposed designs true according to structural unit
Determine suspension centre, carries out setting-out, blanking, production by the drawing of structural unit, lower-layer structure unit is first made, then in structural unit
Upper layer structural unit is made above, can guarantee two layers of preferably docking, and volume is grouped to the structural unit to complete
It is number spare；The prefabricated place election of structural unit be located at close to riverside region on the bank, soil property is undisturbed soil, to prefabricated place into
Row hardening, hardening gauge thickness must not be less than 0.3m, and the specification of length and width is according to water tank size, structure fabrication activity
Space required determines；
Step 2: water tank excavation of foundation pit, the control including marking water tank installation site in waters dry point unwrapping wire
Point, and underwater buoy is set at control point, using grab bucket dredger Dredging operation waterborne, from the mud dug out under water
It is transferred to hopper, mud is transported into specified point by hopper and abandons mud, foundation pit bottom surface elevation and cross dimension is measured, meets the requirements
Afterwards, dredged the decomposed rock into riverbed base with grab bucket dredger, using ship down-the-hole drill carry out it is underwater bore blast hole, at
Powder charge is carried out behind hole immediately, underwater demolition is carried out using blasting network connection, and clear up debris after explosion；It is fixed using GPS
Position total station auxiliary tracking sounding instrument measures bottom absolute altitude, is measured, is instructed to the accommodation of operation ship with GPS or total station
Correct accommodation；
Step 3: being laid with foundation pit bed course, be included in after the completion of excavation of foundation pit, is laid with and is not less than 20cm thickness rubble, after levelling
Form foundation pit bed course；Bed course ballast grain sizes are selected as 20-40mm, are constructed using tremie method, broken by diver's command and control
The elevation of water tank bottom of foundation ditch is precisely filled and adjusted to stone conduit, and after completion rubble conduit feeds intake, diver uses underwater steel
Ruler carries out levelling until blotter reaches design requirement；Mode is struck off using ship cooperation diver under water and flattens foundation pit,
During a piece channel steel of suspention or heavy rail hang down water on ship, as floating rule, floating rule elevation is controlled using steel cable, under water by diving
Water person pushes floating rule in the horizontal direction, reaches leveling foundation pit purpose；
Step 4: water tank installation, the decomposition structural unit of the water tank including making step 1 are first hung with truck crane
It is attached on cargo ship, installation region is transported to cargo ship, then construction list is sling with the sequence of first lower layer, rear upper layer with crane ship
Member is put into underwater in place, the pause decentralization when the lower-layer structure unit of water tank is hung to 1m high from bottom of foundation ditch, by diver
It checks implantation situation, overcasting staff is installed at the control point of the installation site of water tank, mounting coordinate is accurately positioned with total station
After continue lower-layer structure unit transfer in place, then equally successively lift upper layer structural unit；The flatness of installation is controlled,
And realize and correctly docked with intake pipe, upper layer and lower layer are spliced with bolt fastening, then install steel lattice in the water inlet of water tank
Grid；
Step 5: underwater concrete pouring, including conduit is taken to rush ball construction technology, conduit is erected on buoyancy tank, buoyancy tank with
Ship is connected with heaving pile, and ship is in place, and using water float bowl platform, funnel is at 1 meter of the water surface or more, and concrete pumps on the bank for pump line connection
Vehicle and conduit ship, concrete tank and pump truck are ready, start to fix in water tank bottom concrete placed under water；It pours
Uniformly slow blanking is needed when building water tank lower concrete, prevents local concrete height compared with other positions height, causes water tank
Pressure suffered by part is big and is subjected to displacement or deviates；In casting process, diver will arrive submarine inspection and feel whether have silt
Mud and impurity, if there is cleaning out in time, it is ensured that the intact combination of concrete reaches integral strength；Every 3 hours when pouring
Observed stage elevation；
Step 6: periphery riprap work, periphery jackstone may make that water tank is more firm, enhance anti-pressure ability, prevent from sending out
Raw movement, moreover it is possible to expand intake and water bottom mud distance, promote water intaking quality；Periphery riprap work includes throwing block
Stone and throwing paving galvanized wire gabion set building stones transit depot on bank land, and block stone is loaded onto ship using excavator, in foundation trench position, with boat-carrying
The direct fill block stone throwing of excavator；Cage and push track are thrown in setting aboard ship, stone are packed into woven steel wire, are filled cage
Stone is generally no greater than 100kg, so as to personnel's operation, carries out sealing and forms galvanized wire gabion, galvanized wire gabion after fill block stone throwing
Push-in push track throws cage along push track push-in and throws paving galvanized wire gabion；It will edge when fill block stone throwing and throwing paving galvanized wire gabion
Position line moves hull, it is ensured that block stone and galvanized wire gabion enter water position；Then arrangement diver, which is lauched to detect, ensures galvanized wire gabion
Levelness and absolute altitude meet design requirement.
Wherein, above-mentioned steps one with Step 2: the sequence of construction of step 1 and step 3 does not have successive point, Ke Yigen
It needs to carry out reasonable arrangement according to construction speed.
Water tank as shown in Figure 2 installs embodiment, which has four intake pipes 2, water tank 1 is resolved into,
Lower two layers of each four structural unit 101, totally eight structural units 101, the water (flow) direction that structural unit 101 is indicated according to arrow
It is mounted side by side on foundation pit bed course 3 and is combined into water tank 1, poured concrete 4 in the bottom of water tank 1, concrete 4 makes
Water tank 1 is combined as a whole with foundation pit bed course 3, then with periphery jackstone 5 around reinforcing.
Water tank as shown in Figure 3 connect alternative embodiment with intake pipe, which has four as the implementation of Fig. 2
Water tank 1, is resolved into four structural units 101, the water flow side that four structural units 101 are indicated according to arrow by bar intake pipe 2
To Side by side groupings, the structural unit 101 of visible centre two is rectangular from the top view, and forward and backward structural unit 101 is rectangular
And the combination shape of triangle, forms the water tank 1 for overlooking approximate spindle shape after combination, this shape can reduce water flow
To the pressure of water tank, intake pipe 2 is docked with the hole installation that 1 side of water tank is stayed.
Water tank as shown in Figure 4 installs embodiment, and water tank 1 is mounted on foundation pit bed course 3, intake pipe 2 and water tank
Docking is installed in the hole that 1 side is stayed, and there is through-hole in the lower-layer structure unit bottom surface of water tank 1, pours in 1 inner bottom surface of water tank mixed
Solidifying soil 4, concrete 4 are contacted and are combined as a whole with foundation pit bed course 3 by through-hole, fix water tank 1, then with periphery jackstone 5
It is further reinforced around water tank 1, the upper surface of periphery jackstone 5 is not less than waters original bottom surface, to form certain object to mud
Reason isolation.
Certainly, the present invention can also have other various embodiments, such as to intake pipe in face of the structural unit of water (flow) direction,
Outer shape in face of water (flow) direction can be fabricated to the pointed streamlined of ship, to reduce the pressure that meets water of intake pipe, without departing substantially from
In the case where spirit of that invention and its essence, those skilled in the art can make various corresponding changes and change according to the present invention
Shape, but these corresponding changes and modifications belong to scope of protection of the claims of the invention.
Claims (10)
1. a kind of water works water tank fabrication and installation method, it is characterised in that: the following steps are included:
Step 1: the production of water tank structural unit makes the structural unit resolved by water tank, determines each structural unit
Suspension centre, and to the structural unit to complete be grouped number it is spare；
Step 2: water tank excavation of foundation pit, the control point including marking water tank installation site in waters dry point unwrapping wire, and
Control point is arranged underwater buoy and is transferred to mud from the mud dug out under water using grab bucket dredger Dredging operation waterborne
It refutes, mud is transported into specified point by hopper and abandons mud, after measurement foundation pit bottom surface elevation and cross dimension meet the requirements, with grab type
Dredger is dredged the decomposed rock into riverbed base, using ship down-the-hole drill carry out it is underwater bore blast hole, carried out immediately after pore-forming
Powder charge carries out underwater demolition using blasting network connection, and clears up debris after explosion；
Step 3: being laid with foundation pit bed course, including after the completion of excavation of foundation pit, is laid with and is not less than 20cm thickness rubble, forms base after levelling
Cheat bed course；
Step 4: water tank installation, the structural unit including the water tank for making step 1 are first lifted into transport with truck crane
On ship, installation region is transported to cargo ship, structural unit is sequentially sling and is put under water in place, then pacify in the water inlet of water tank
Steel loading grid；
Step 5: underwater concrete pouring, including conduit is taken to rush ball construction technology, conduit is erected on buoyancy tank, buoyancy tank and ship
It is connected with heaving pile, ship is in place, and using water float bowl platform, at 1 meter of the water surface or more, pump line connects concrete pump truck on the bank and leads funnel
Pipe ship, concrete tank and pump truck are ready, start to fix in water tank bottom concrete placed under water.
2. water works according to claim 1 water tank fabrication and installation method, it is characterised in that: in step 1,
If water tank resolves into multi-ply construction unit along the vertical direction, when structural unit makes, lowest level structural unit is first made, then
Second layer structural unit is made on lowest level structural unit, so upwards in turn can guarantee the precision of each layer docking,
Each layer is spliced using tongue and groove in step 4.
3. water works according to claim 1 water tank fabrication and installation method, it is characterised in that: in step 2,
It assists tracking sounding instrument to measure bottom absolute altitude using GPS positioning total station, the accommodation of operation ship is surveyed with GPS or total station
Amount, guidance correction accommodation.
4. water works according to claim 1 water tank fabrication and installation method, it is characterised in that: in step 3,
It is constructed using tremie method, control rubble conduit filling is accurate, adjusts the elevation of water tank bottom of foundation ditch, completes rubble conduit
It is levelling until blotter reaches design requirement after feeding intake.
5. water works according to claim 4 water tank fabrication and installation method, it is characterised in that: in step 3,
Foundation pit is flattened using mode is struck off under ship hydrous water, a channel steel or heavy rail is suspended in midair on ship and hangs down in water, as scraping
Ruler is controlled floating rule elevation using steel cable, pushes floating rule in the horizontal direction under water, and leveling foundation pit purpose is reached.
6. water works according to claim 1 water tank fabrication and installation method, it is characterised in that: in step 4,
It hangs in structural unit to pause decentralization when being higher than installation site 1m in foundation pit, implantation situation is checked, in the installation position of water tank
The control point installation overcasting staff set, with total station be accurately positioned mounting coordinate it is errorless after continue to transfer to position, control water tank
The flatness of installation.
7. water works according to claim 1 water tank fabrication and installation method, it is characterised in that: in step 5,
Need uniformly slow blanking when pouring water tank lower concrete, prevent water tank irregular by concrete pressure, water tank part by
Power is greater than other positions so that water tank shifts.
8. water works according to claim 1 water tank fabrication and installation method, it is characterised in that: in step 5,
Submarine inspection is felt in casting process, if there is mud and impurity are cleared up in time, it is ensured that it is strong that the intact combination of concrete reaches requirement
Degree.
9. water works according to claim 1 water tank fabrication and installation method, it is characterised in that: in step 5,
Every 3 hours observation casting concrete elevations when pouring, it is ensured that pour height and meet design requirement.
10. the water tank fabrication and installation method of water works described in -9 any one according to claim 1, it is characterised in that:
This method further includes step 6: periphery riprap work, including fill block stone throwing and throwing paving galvanized wire gabion, is set in building stones on bank land
Transition, block stone is loaded onto ship using excavator, in foundation trench position, with the direct fill block stone throwing of boat-carrying excavator；Aboard ship cage is thrown in setting
And push track, stone is packed into woven steel wire, carries out sealing and form galvanized wire gabion, galvanized wire stone after fill block stone throwing
Cage push-in push track, throws cage along push track push-in and throws paving galvanized wire gabion；It will edge when fill block stone throwing and throwing paving galvanized wire gabion
Position line moves hull, it is ensured that block stone and galvanized wire gabion enter water position；Detecting, which ensures that galvanized wire gabion levelness and absolute altitude meet, sets
Meter requires.
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| CN201910394179.6A CN110258725A (en) | 2019-05-13 | 2019-05-13 | Water works water tank fabrication and installation method |
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| CN201910394179.6A CN110258725A (en) | 2019-05-13 | 2019-05-13 | Water works water tank fabrication and installation method |
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