CN106400808B - A kind of no water proof bolt underwater grouting constructing device and its application method - Google Patents
A kind of no water proof bolt underwater grouting constructing device and its application method Download PDFInfo
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- CN106400808B CN106400808B CN201611107811.7A CN201611107811A CN106400808B CN 106400808 B CN106400808 B CN 106400808B CN 201611107811 A CN201611107811 A CN 201611107811A CN 106400808 B CN106400808 B CN 106400808B
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- hopper
- conduit
- concrete
- water proof
- proof bolt
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
Abstract
The invention discloses a kind of no water proof bolt underwater grouting constructing devices, including suspender, the suspender is connected by the top of steel wire and hopper, the bottom connecting conduit of hopper, conduit extends downwardly into the inner bottom of steel reinforcement cage, and the outside on the hopper is equipped with operating platform, and fence is equipped in the top outermost of operating platform, it is evenly arranged on fence and telescopic rod is installed, the top of telescopic rod is equipped with headlamp.Conduit is put into stake holes by the present invention using crane, sling large-scale hopper in top, feed hopper bottom mouth is equipped with valve, and enough concrete are disposably full of in hopper, then open feed hopper bottom valve, concrete is disposably circulated into drilling in hopper, is excluded mud and air in conduit by the pressure that its own weight generates, is completed construction；This compares embolization catheter method, has lacked the step of being pre-placed suitable water proof bolt, and summation process is wanted without what the smooth degree to pipe inner wall did excessive harshness.
Description
Technical field
The present invention relates to building construction technology apparatus field, specifically a kind of no water proof bolt underwater grouting constructing device and its
Application method.
Background technology
Cast-in-situ bored pile is because having many advantages, such as high capacity, can pass through soft or hard soil layer and easy for construction, in China coast
It is widely used in regional and interior ground ground foundation engineering.This method is simple, widely applicable with operational procedure, is easy to slap
Hold, quickly, economy, significant effect the features such as, in pile foundation construction especially city pile foundation construction have boundless foreground.
Development of the bored pile construction method in China has had the history of decades, and road is widely used in China
In the constructions such as traffic, basic pile foundation.Research and development with China's Architectural Equipment machinery especially rotary drilling rig equipment in nearest 4 or five years
And it is universal, underwater grouting is also gradually recognized and is applied, and industry and civil buildings, highway subgrade and airport have been widely used in
In the engineerings such as runway.Rotary drilling rig is generally applicable in clay, silt, sand, muck soil, artificial backfill and contains part ovum
The stratum of stone, rubble.Rotary drilling rig and construction technology have been obtained for popularizing quickly in the northern area of China.
Underwater gliders are also referred to as tremie concrete perfusion, are the conduits by concrete by setting, by concrete
Gravity pressure carry out underwater grouting method.It is the critical process successfully carried out in underwater grouting pile quality control that drills,
If method for filling is inappropriate to will result in the defects of pressing from both sides mud between broken pile or stake, or even causes stake holes to scrap and shifted with pile foundation, to
Difficult and loss is brought to Engineering Project Construction.Therefore, it is improved in filling concrete under water and uses rational pouring construction
Control measure are to ensure that construction quality seems particularly significant.
Without water proof bolt underwater cast-in-place pile method, as the term suggests i.e. under water in filling process, especially for the first time in filling process,
It is not by concrete with the water and air in water proof bolt discharge conduit without water barrier device and facility between concrete and water, and
It is directly by there is concrete of strong potential energy itself that the water of bottom hole and sediment are evoked and arranged.
In recent years, many plot level of ground water was higher in construction market, and subaqueous concreting technology is increasingly mature, but builds
It builds in market and often occurs not taking dewatering measure that conduit is directly reached underwater the case where being irrigated, easily cause concrete
Underwater isolation and pile-forming effect is not good enough, major quality accident occurs etc..This just forces the generation of underwater perfusion technique, makes
Underwater grouting method is more succinct, and effect becomes apparent from, and technological process is more easy to be combined with other techniques.
Invention content
The purpose of the present invention is to provide a kind of no water proof bolt underwater grouting constructing device and its application methods, in solution
State the problem of being proposed in background technology.
To achieve the above object, the present invention provides the following technical solutions：
A kind of no water proof bolt underwater grouting constructing device, including suspender, the suspender at the top of steel wire and hopper by connecting
It connects, the bottom connecting conduit of hopper, conduit extends downwardly into the inner bottom of steel reinforcement cage, and the outside on the hopper is equipped with
Operating platform is equipped with fence in the top outermost of operating platform, is evenly arranged on fence and is equipped with telescopic rod, telescopic rod
Top be equipped with headlamp；The hopper is divided to two sections, and epimere is cylindric, and hypomere is taper, columned bottom and taper
Top connects, and hanging ring C corresponding with hanging ring A, cylindric and taper joint have been evenly arranged within one week at columned top
Columned outside be evenly arranged within one week several pin holes, valve is installed at the outlet at bottom of the taper；The conduit
Upper end on the inside of be equipped with bellmouth, bellmouth is internally provided with socket hoop, and the lower end of conduit is equipped with socket, and spigot is equipped with socket ring,
Adjacent catheter is inserted into the bellmouth of lower end conduit by the socket of upper end conduit and realizes connection, and clip is equipped in the outside of junction
It is fixed；The suspender includes hanging ring A, and hanging ring A is mounted on the end of arm, and the beginning of arm is connect with hanging ring B, described to hang
Arm is equipped with three, is in 120 ° between two adjacent arms.
As a further solution of the present invention：The bottom of the operating platform is equipped with axis pin, is arranged on axis pin and hopper
Pin hole is correspondingly arranged.
As a further solution of the present invention：The clip includes two semicircular card slots, one end hinge of two card slots
The other end is connect equipped with the jackscrew for making clamp connection fasten.
The application method of above-mentioned no water proof bolt underwater grouting constructing device is：Include the following steps：
The first step：Suspender is sling by hanging ring B using hanging device, hopper is sling by steel wire in the bottom of suspender, from
And conduit is sling；
Second step：Insert a catheter into the inside of drilling；
Third walks：Concrete is injected into hopper, is waited for that the amount inside concrete injection hopper reaches and is wanted concrete perfusion
When amount or full hopper, valve is opened, the concrete in hopper is disposably circulated into drilling and completes once grouting.
4th step：The operation in third step is repeated until filling to meeting the requirements.
Compared with prior art, conduit is put into stake holes by the present invention using crane, and large-scale hopper, hopper bottom are sling in top
Portion mouthful is equipped with valve, and enough concrete are disposably full of in hopper, then opening feed hopper bottom valve, coagulation in hopper
Soil is disposably circulated into drilling, is excluded mud and air in conduit by the pressure that its own weight generates, is completed construction；
This compares embolization catheter method, has lacked the step of being pre-placed suitable water proof bolt, had been done without the smooth degree to pipe inner wall
That divides harshness wants summation process, not only avoids plugging problem, is further without excessively processing pipe inner wall, can save a large amount of work
Work amount and working time.
Description of the drawings
Fig. 1 is the structural schematic diagram of single unit system；
Fig. 2 is the structural schematic diagram of hopper；
Fig. 3 is the structure chart of suspender；
Fig. 4 is the structural schematic diagram of operating platform；
Fig. 5 is the sectional view of conduit；
Fig. 6 is the structural schematic diagram of clip；
Fig. 7 is that concrete quantity needed for first batch of filling concrete calculates schematic diagram；
Fig. 8 is that funnel base opening is higher by the hole water surface or the necessary height of stake top calculates schematic diagram.
In figure：1- suspenders, 101- hanging ring A, 102- arm, 103- hanging ring B, 2- steel wire, 3- headlamps, 4- telescopic rods, 5-
Fence, 6- operating platforms, 601- axis pins, 7- hoppers, 701- hanging ring C, 702- pin hole, 703- valves, 8- conduits, 801- bellmouths
Ring, 802- bellmouths, 803- sockets, 804- sockets ring, 9- steel reinforcement cages, 10- clips, 1001- card slots, 1002- jackscrews.
Specific implementation mode
The technical solution of this patent is described in more detail With reference to embodiment.
Please refer to Fig.1-8, a kind of no water proof bolt underwater grouting constructing device and its application method, including suspender 1, it is described to hang
Tool 1 is connect by steel wire 2 with the top of hopper 7, and the bottom connecting conduit 8 of hopper 7, conduit 8 extends downwardly into steel reinforcement cage 9
Inner bottom, the outside on the hopper 7 is equipped with operating platform 6, fence 5 is equipped in the top outermost of operating platform 6,
It is evenly arranged on fence 5 and telescopic rod 4 is installed, the top of telescopic rod 4 is equipped with headlamp 3.The setting of headlamp 3 can facilitate
It carries on construction work at night.
The suspender 1 include hanging ring A 101, hanging ring A 101 be mounted on arm 102 end, the beginning of arm 102 with hang
The connections of ring B 103, the arm 102 are equipped with three, are in 120 ° between two adjacent arms 102.
The hopper 7 is divided to two sections, and epimere is cylindric, and hypomere is taper, the top connection of columned bottom and taper,
It has been evenly arranged within one week hanging ring C 701 corresponding with hanging ring A 101 at columned top, it is cylindric and taper joint
Columned outside has been evenly arranged several pin holes 702 for one week, and valve 703 is equipped at the outlet at bottom of the taper.
The bottom of the operating platform 6 is equipped with axis pin 601, and axis pin 601 is correspondingly arranged with the pin hole 702 being arranged on hopper 7.
Bellmouth 802 is equipped on the inside of the upper end of the conduit 8, bellmouth 802 is internally provided with socket hoop 801, the lower end of conduit 8
Equipped with socket 803, socket ring 804 is equipped at socket 803, adjacent catheter 8 is inserted into lower end conduit by the socket 803 of upper end conduit
Bellmouth 802 in realize connection, be fixed equipped with clip 10 in the outside of junction.
The clip 10 includes two semicircular card slots 1001, and one end of two card slots 1001 is hinged the other end and is equipped with
Jackscrew 1002 for making the connection fastening of clip 10.
The application method of above-mentioned no water proof bolt underwater grouting constructing device is：Include the following steps：
The first step：Suspender is sling by hanging ring B using hanging device, hopper is sling by steel wire in the bottom of suspender, from
And conduit is sling；
Second step：Insert a catheter into the inside of drilling；
Third walks：Concrete is injected into hopper, is waited for that the amount inside concrete injection hopper reaches and is wanted concrete perfusion
When amount or full hopper, valve is opened, the concrete in hopper is disposably circulated into drilling and completes once grouting.
4th step：The operation in third step is repeated until filling to meeting the requirements.
Conduit is put into stake holes using crane, large-scale hopper is sling on top, is equipped with valve at feed hopper bottom mouth, and expecting
It is disposably full of enough concrete in bucket, then opens valve, concrete is disposably circulated into drilling in hopper, by it
The pressure that own wt generates excludes the mud and air in conduit, completes construction.
This compares embolization catheter method, has lacked the step of being pre-placed suitable water proof bolt, without to the smooth of pipe inner wall
What degree did excessive harshness wants summation process.Not only avoid plugging problem, be only not required to excessively to handle one nothing of pipe inner wall every
Water bolt method can save prodigious workload and working time.
In the case where the parameters such as working specification, hopper height calculate errorless, no water proof bolt underwater cast-in-place pile final effect
It is no different with quality and traditional embolization catheter method, is better than whether the integrality of pile body and entire work progress are smooth etc.
Embolization catheter method.
Compared with embolization catheter method underwater gliders, no water proof bolt method is easy for construction, simple, time saving and energy saving, economical
Cost is lower.It not will produce and generate plugging because water proof bolt riding position is inaccurate or catheter interior has residual concrete block etc.
Situation.But it is noted that when pouring for the first time, conduit bottom end can should be once embedded to 0.8~1.5m by beginning quantity, and be retained in conduit
Concrete height, it is sufficient to resist drilling in slurry compounding conduit.
It is extensive without water proof bolt Underwater pile construction engineering method applicable elements, it is general using underwater grouting mode, should all be
Drilling equipment pore-forming also needs mud or cylinder-wall protecting if stratum ground is loose in drilling machine pore forming process.The method is conveniently in underground
The not high pile foundation engineering of water level, water-column is not preferably greater than 10m in hole.For in terms of hole depth, general drilling substantially can
Implement without water proof bolt underwater grouting, only hole depth cannot excessively shallow (being less than 4m) or too deep (being more than 20m), excessively it is shallow can cause it is first batch of
The amount of pouring into of concrete overflows the cost for causing to waste and increase post-processing too much；Original of the too deep meeting because of pipe inner wall friction
Whereabouts potential energy weakens caused by, influences perfusion effect.Aperture requires to be 0.6-1.0m.
It is obtained by understood example：Liaoning power plant uses this technique, aperture 0.6m, hole depth 8-10m, height of water level
6.0m, it is especially good using the method effect；Bei Xin groups mansion pattern foundation pit supporting structure project support pile stake diameter 1.0m is also used well
This method simultaneously obtains good result.
Without water proof bolt underwater cast-in-place pile method, it is to use hanging device, conduit is lifted to certain height, one in hopper
Secondary property is full of enough concrete, after concrete is enough, feed hopper bottom cover board or interim embolism is opened, concrete in hopper
It is disposably circulated into drilling, in the moment for touching mud, huge impact energy generates very high surge, excludes to lead
Mud in pipe, to play the role of mud in discharge conduit.
Principle without water proof bolt underwater cast-in-place pile method is fairly simple.It is collected in the hopper of top and buries bottom conduit nozzle enough
Amount of concrete, be then disposably circulated into drilling, full of conduit concrete potential energy Transient transformation at kinetic energy, concrete
During falling at high speeds, with the mud contacts in conduit, the pressure generated by concrete own wt will be in conduit
Mud and water are extruded into outside conduit, then coordinate above carrying for conduit, complete the perfusion operation of entire pile body.
Correlation computations without water proof bolt underwater cast-in-place pile method Construction Principle：
According to the first buried depth h2=1.5m of conduit, conduit bottom gap h3=0.5m is filled, static level is extremely in hole
Stake bottom depth capacity is 10m, and mud and water mixing severe are γ slurries=12N/m in hole3, concrete severe γ concretes=24N/m3Meter
It calculates.
1, concrete quantity needed for first batch of filling concrete calculates：
The quantity of its required concrete is calculated as follows (such as Fig. 7)：
H concretes=h2-h3=1.5+0.5=2.0m
H1 >=γ starches H slurries/γ concretes=12* (10-2)/24=4.0m
V head >=π r2h1+πR2H concretes=π * 0.1252*4+π*0.52* 2=1.77m3
In formula：V：Concrete requirement m for the first time3；
r：Conduit radius m；
R：Stake holes radius m；
H concretes：Required wellhole inner concrete face is perfused when first batch of concrete to the height m of bottom hole；
h1：When wellhole concrete surface height reaches H concretes, the height m of conduit inner concrete；
h2：The first buried depth m of conduit；
h3：Conduit bottom end is away from foot of hole distance m；
H is starched：The depth m of the above mud in wellhole inner concrete face and aqueous mixtures.
2, the impact energy that first batch of concrete falls：
E=0.5m*v2(wherein v=gt, impact force F=mg)
Therefore
In formula：E impacts：The impact energy J that concrete falls on the water surface at 5.0m；
m：First batch of concrete quality kg；
v：Concrete falling speed m/s
t：Concrete fall time s
V1：Volume of concrete m in the outer concrete height lower opening of pipe3；
V2：Remove the pipe inner concrete volume m managed under outer concrete height3。
3, the calculating of hopper level is perfused：
In perfusion latter stage, funnel base opening is higher by the hole water surface or the necessary height of stake top calculates (such as Fig. 8)：
H concretes >=(Pc+ γ slurry H slurries)/γ concretes=(150+12*1)/24=6.75m
In formula：H concretes：More than well inner concrete face, conduit inner concrete (calculates to funnel base opening) height m；
Pc：Conduit inner concrete is set to fall to conduit bottom and by concrete lift-up outside conduit when required over pressure.；
H concretes：Mud more than wellhole inner concrete face and aqueous mixtures depth m.
Major parameter table：
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, one skilled in the relevant art within the scope of knowledge, can also be under the premise of not departing from this patent objective
It makes a variety of changes.
Claims (4)
1. a kind of no water proof bolt underwater grouting constructing device, which is characterized in that including suspender, the suspender passes through steel wire and hopper
Top connection, the bottom connecting conduit of hopper, conduit extends downwardly into the inner bottom of steel reinforcement cage, on the hopper
Outside is equipped with operating platform, is equipped with fence in the top outermost of operating platform, be evenly arranged on fence be equipped with it is flexible
The top of bar, telescopic rod is equipped with headlamp；The hopper is divided to two sections, and epimere is cylindric, and hypomere is taper, columned bottom
It is connect with the top of taper, hanging ring C corresponding with hanging ring A, cylindric and cone has been evenly arranged within one week at columned top
The columned outside of shape joint has been evenly arranged several pin holes for one week, and valve is equipped at the outlet at bottom of the taper；
Bellmouth is equipped on the inside of the upper end of the conduit, bellmouth is internally provided with socket hoop, and the lower end of conduit is equipped with socket, and spigot is equipped with
Socket ring, adjacent catheter are inserted into the bellmouth of lower end conduit by the socket of upper end conduit and realize connection, the outside in junction
It is fixed equipped with clip；The suspender includes hanging ring A, and hanging ring A is mounted on the end of arm, and beginning and the hanging ring B of arm connect
It connects, the arm is equipped with three, is in 120 ° between two adjacent arms.
2. no water proof bolt underwater grouting constructing device according to claim 1, which is characterized in that the bottom of the operating platform
Portion is equipped with axis pin, and axis pin is correspondingly arranged with the pin hole being arranged on hopper.
3. no water proof bolt underwater grouting constructing device according to claim 2, which is characterized in that the clip includes two
One end of semicircular card slot, two card slots is hinged the other end equipped with the jackscrew for making clamp connection fasten.
4. a kind of application method of no water proof bolt underwater grouting constructing device as described in any one of claims 1-3, feature exist
In including the following steps：
The first step：Suspender is sling by hanging ring B using hanging device, hopper is sling by steel wire in the bottom of suspender, thus will
Conduit is sling；
Second step：Insert a catheter into the inside of drilling；
Third walks：Concrete is injected into hopper, wait for concrete injection hopper inside amount reach the amount for wanting concrete perfusion or
When full hopper, valve is opened, the concrete in hopper is disposably circulated into drilling and completes once grouting；
4th step：The operation in third step is repeated until filling to meeting the requirements.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107811.7A CN106400808B (en) | 2016-12-06 | 2016-12-06 | A kind of no water proof bolt underwater grouting constructing device and its application method |
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| CN106400808B true CN106400808B (en) | 2018-10-16 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886391A (en) * | 2010-06-25 | 2010-11-17 | 武汉一冶交通工程有限责任公司 | Waterproof guide pipe for underwater concrete filling pile |
| CN102720186A (en) * | 2012-07-10 | 2012-10-10 | 上海港务工程公司 | Underwater once pouring method for variable cross-section bored cast-in-place pile |
| CN204780928U (en) * | 2015-06-25 | 2015-11-18 | 辽宁有色基础工程公司 | Major diameter bored concrete pile concrete first set groundwater increment controlling means |
| CN205153503U (en) * | 2015-11-02 | 2016-04-13 | 浙江舜士建设有限公司 | Multi -use architecture scaffold |
| CN205296168U (en) * | 2015-12-29 | 2016-06-08 | 浙江大学城市学院 | Concreting device under water |
| CN206279531U (en) * | 2016-12-06 | 2017-06-27 | 新疆新工勘岩土工程勘察设计院有限公司 | One kind is without water proof bolt underwater grouting constructing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3765063B2 (en) * | 1996-02-08 | 2006-04-12 | 大成建設株式会社 | Concrete placement method |
| KR100420074B1 (en) * | 2001-02-20 | 2004-02-25 | (주)한석엔지니어링 | A Construction Method of Underwater Concreting |
-
2016
- 2016-12-06 CN CN201611107811.7A patent/CN106400808B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101886391A (en) * | 2010-06-25 | 2010-11-17 | 武汉一冶交通工程有限责任公司 | Waterproof guide pipe for underwater concrete filling pile |
| CN102720186A (en) * | 2012-07-10 | 2012-10-10 | 上海港务工程公司 | Underwater once pouring method for variable cross-section bored cast-in-place pile |
| CN204780928U (en) * | 2015-06-25 | 2015-11-18 | 辽宁有色基础工程公司 | Major diameter bored concrete pile concrete first set groundwater increment controlling means |
| CN205153503U (en) * | 2015-11-02 | 2016-04-13 | 浙江舜士建设有限公司 | Multi -use architecture scaffold |
| CN205296168U (en) * | 2015-12-29 | 2016-06-08 | 浙江大学城市学院 | Concreting device under water |
| CN206279531U (en) * | 2016-12-06 | 2017-06-27 | 新疆新工勘岩土工程勘察设计院有限公司 | One kind is without water proof bolt underwater grouting constructing device |
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