CN207469230U - Drum prefabricated pile supporting construction is adjusted in a kind of cement soil wall interpolation rigidity - Google Patents
Drum prefabricated pile supporting construction is adjusted in a kind of cement soil wall interpolation rigidity Download PDFInfo
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Abstract
The utility model discloses a kind of cement soil wall interpolation rigidity to be adjusted drum prefabricated pile supporting construction, and drum prefabricated pile is adjusted in the rigidity for earth-retaining including being used for the cement soil wall of sealing and being arranged in cement soil wall；The rigidity is adjusted drum prefabricated pile top and is provided with concrete Guan Liang；It is 0.55~0.6 that the pile body short side of drum prefabricated pile and long side ratio, which is adjusted, in the rigidity；Drum prefabricated pile concrete strength of pile grade is adjusted as C55~C80 in the rigidity.Cement soil wall adaptation stratum in the utility model is wide, and discreteness is small, and intensity is high, upper and lower even intensity, and water isolating is good；The supporting construction is not only easy to operate, it is and easy for construction quick, reliable, given full play to simultaneously rigidity be adjusted drum prefabricated pile strength grade of concrete is high, prestressing force can be according to the characteristics of Field adjustment, achieve the purpose that shorten the construction period, reduced project cost, the dosage of concrete and steel can be not only reduced in this way, but also can meet safety requirements.
Description
Technical field
The utility model is related to field of civil engineering, specially a kind of to be suitable for architectural engineering, dyke building, road work
Drum prefabricated pile supporting construction is adjusted in the cement soil wall interpolation rigidity of deep foundation pit support processing in journey, subway engineering.
Background technology
The toolbox is inserted vertically into stratum by cement soil wall into the machinery that wall construction is by carrying chain saw type toolbox
In, then make horizontal cross movement, while make upper and lower rotary motion by chain-driving cutter, be stirred undisturbed soil and pour into
Cement mortar forms the canal formula Soil-cement Wall of equal thickness.It is mainly characterized by into continuous wall, surfacing, consistency of thickness, wall
Body uniformity is good, strengthening of foundation and Anti-seeping technology applied to all kinds of underground engineerings.
Base pit engineering not only faces water seepage prevention, but also faces excavation earth-retaining, but as the pattern foundation pit supporting structure knot of temporary structure
Structure, it is short using the period, it is of high cost.Therefore, shorten the foundation pit duration and reduce supporting construction cost, become asking of must solving
Topic.Frequently with H profile steel is implanted into triaxial cement mixing pile in engineering, compound earth-retaining water sealing structure is formed, that is, utilizes three axis water
Soil mixing pile first stirs the soil body, and the mode of H profile steel is then implanted into before soil cement initial set.But there are following defects for this method：
（1）H steel dosages are big, and transport with the increase of foundation pit scale, is continuously increased with lease expenses, uneconomical, and in basement
It after construction, needs to pull out H profile steel, this certainly will lead to the damages such as H profile steel bending, drawing crack, when that can not extract, and increase greatly
Add support cost；（2）Mixing pile all has certain stake axle center spacing, and when being implanted into H profile steel, its spacing is certain, it is impossible to
Enough adjustment spacing as needed, therefore, in the case that many, which is unsatisfactory for designing bending resistance to supporting construction, anti-
Cut requirement, and the long requirement that design is also not achieved to building-in depth of stake in compared with deep basal pit.
Number of patent application be 201110460244.4 Chinese patent application disclose " cast-in-situ I-type armored concrete and
The alternate diaphram wall of soil cement and its engineering method ", it is characterized in that cast-in-situ I-type armored concrete is in I-shaped for cross section
Driven cast-in-place pile, alternate soil cement are cement rotary churning pile or cement mixing pile.Although this engineering method mud-less pollution, has
Following shortcoming：（1）I-shaped pile poured in place concrete curing time is long, influences the duration of a project；（2）Cast-in-place concrete grade
Relatively low, pile body stiffness is relatively low after pile, and resistance capacity to deformation is too poor；（3）Immersed tube bored pore forming process is there are soil compaction phenomenon, to field
There is the pipeline of deformation sensitive, building can generate compacting displacement and deformation on ground periphery, be affected.
China application No. is 201310030440.7 applies for a patent and discloses that " cast-in-place post-tensioning I-shaped pile is in soil cement
Insertion method ", including：Surveying and locating according to known coordinate basic point, positions the position of pile body；Trench digging grooving, corresponding stake machine
Construction location trench digging grooving, and clear up the extra soil body；Setting is oriented to, and is oriented in the particular locations setting shaped steel of pile body；Stake
Machine is in place：Stake rack is located on specific construction location；Stir pile：I-shaped pile body is formed using soil cement；It is inserted into stake
Body：I-shaped pile body is inserted into the soil body；Telephone-moving：After the completion of H pile body construction, mobile stake machine is constructed next time.It should
Though method have the characteristics that can scale make, while be avoided that neighboring buildings and environment is caused to settle when shaped steel is extracted, cracking
Situation, but there are following defects for this method：（1）Specific size and prestressed construction method for post-tensioning I-shaped pile are not
It refers to, construction site is difficult to realize；（2）Soil cement pile making method is indefinite, and size is unclear, and construction site can not implement；（3）
The interpolated interval of I-shaped pile is not known, and construction site can not determine；（4）The I-shaped pile rigidity can not be needed according to scene into
Row is adjusted, and rigidity, which is not achieved, can increase the purpose for reducing displacement.
Therefore, it can form a kind of water-stagnating effect that can make full use of cement earth pile there is an urgent need to a kind of and short can be formed again
The foundation pit supporting construction of retaining support structure duration, while rigidity can be adjusted at any time according to engineering site and efficiently control foundation pit change
Shape, and supporting construction and its construction method with cost and duration advantage.
Invention content
In order to overcome above-mentioned deficiency of the prior art, it is adjustable that the utility model provides a kind of cement soil wall interpolation rigidity
Drum prefabricated pile supporting construction is saved, in the thinking of traditional SMW engineering methods stake and conventional soil cement mixing pile interpolation I-shaped pile
On the basis of, change the pile making method of former cement earth pile, form continuous, equal thickness cement soil wall, while improve former prefabricated pile rigidity
It is unadjustable, the problem of support pile rigidity can not be adjusted in time according to foundation pit deformation.Engineering site, in canal formula Soil-cement Wall
Before initial set, preliminary prestressed drum prefabricated pile will be applied and lifted by crane in insertion cement soil wall by loop wheel machine.Drum prefabricated pile
Spacing is flexibly set according to design requirement, and after the completion of pitching pile, other working procedures are consistent with common foundation pit supporting project, but
Foundation pit construction process can monitor situation by soil body deeply mixing cement-soil pile, and drum prefabricated pile rigidity is adjusted, increases supporting
Stake rigidity, the further development of Reducing distortion.Drum prefabricated pile supporting construction is adjusted in this canal formula cement soil wall interpolation rigidity,
Can solve the problems, such as traditional water-seal pile curtailment but solve that support rigidity deficiency can not be adjusted, foundation pit deformation is excessive or
The problem of person's soil cement shearing strength cannot be met the requirements, and with easy for construction, cheap, pile quality is reliable, nothing
The advantages that soil compaction influences.
The object of the present invention is achieved like this：
Drum prefabricated pile supporting construction is adjusted in a kind of cement soil wall interpolation rigidity, the cement soil wall 1 including being used for sealing
And drum prefabricated pile 2 is adjusted in the rigidity for earth-retaining being arranged in cement soil wall 1；It is pre- that drum is adjusted in the rigidity
2 top of stake processed is provided with concrete Guan Liang 3；
It is 0.55~0.6 that the pile body short side of drum prefabricated pile 2 and long side ratio, which is adjusted, in the rigidity；The rigidity
Adjustable drum prefabricated pile concrete strength of pile grade is C55~C80；
The pile body both ends that drum prefabricated pile 2 is adjusted in the rigidity are respectively arranged with 2 pieces of polygon steel end plates 9 and one piece
Rectangle steel end plate 10, and the pre-buried 2 pieces of web both sides pre-embedded steel slab 8 in stake bottom and stake top web both sides；
The rigidity be adjusted in the pile body of drum prefabricated pile 2 be embedded with more can stretch-draw prestressing force steel strand wires 5 and stake
Body longitudinal reinforcement 7；All prestress wires 5 are fixed on by anchorage on drum prefabricated pile stake bottom end plate in pile body bottom end,
In 75% steel strand wires be anchored on pile crown end plate by steel strand anchorage 6 on pile body top, reserve 25% steel strand wires, later stage root
According to engineering site foundation pit soil horizontal displacement situation, steel strand wires are reserved in tensioning, compensate loss of prestress, further increase or
Adjust drum prefabricated pile rigidity；
The rigidity, which is adjusted on the pile body of drum prefabricated pile, sets 4 prestress wires to intert steel sleeve 4, constructs
Preceding calculated according to design requires to penetrate reserved steel strand wires in prestress steel twist thread casing 4；
The rigidity is adjusted 2 compartment of terrain of drum prefabricated pile and is inserted in cement soil wall 1；Work is adjusted in the rigidity
The clear spacing of type prefabricated pile 2 is 20~35cm；The pile body short side that drum prefabricated pile is adjusted in the rigidity is put down with cement soil wall
Row, pile body long side are 0.7~0.8 times of cement soil wall thickness；
The verticality that drum prefabricated pile insertion cement soil wall is adjusted in the rigidity should be with cement soil wall construction verticality
It is consistent, and no more than 1/300；
The wall position deviation of cement soil wall 1 is not more than+20mm~-50mm（Into hole, deviation is just）, wall depth deviation is less than
50mm should be not less than design wall thickness into wall thickness, and deviation is controlled in 0~-20mm（Control cutting box tip size deviation）；Cement
The 28d slurries test block unconfined compressive strengths standard value of cob wall is not less than 1.0MPa, 28d boring and coring unconfined compressive strength marks
Quasi- value is not more than 10 not less than 0.8MPa, wall permeability coefficient-7cm/s；Drum prefabricated pile is adjusted in cement soil wall interpolation rigidity
In supporting construction, the wall end of cement soil wall answers specific stiffness that drum prefabricated pile end depth 1.5m~2.5m is adjusted；
The thickness of cement soil wall 1 takes 450 mm~850mm；When wall thickness is not more than 550mm, maximum construction depth is unsuitable
More than 25m；When wall thickness is not more than 700m, maximum construction depth is not preferably greater than 40m；When wall thickness is not more than 850mm, maximum is applied
Work depth is not preferably greater than 55m；After drum prefabricated pile site operation pile, stake top setting concrete Guan Liang 3, and concrete Guan Liang 3
Highly it is less than 4 prestress steel twist thread casing 5cm of pile body upper end setting；Stake top setting concrete Guan Liang construction is completed to reach to set
After counting intensity, according to live Excavation Process soil body deeply mixing cement-soil pile situation of change, steel strand hole-specifically, by root tensioning is reserved
Line increases or adjusts drum prefabricated pile rigidity.
The construction method of drum prefabricated pile supporting construction is adjusted in a kind of cement soil wall interpolation rigidity, is as follows：
Step 1：Smooth construction site carries out cement soil wall cutting and stirs into wall construction；
Step 2：Drum prefabricated pile type selecting is adjusted in rigidity, and factory makes and tentatively applies prestressing force, passes through end plate steel
Twisted wire anchorage 6, fixed a part of prestress wire 5；
Step 3：Drum prefabricated pile insertion leading truck is adjusted in setting rigidity and hoist is in place；
Step 4：Rigidity is adjusted drum prefabricated pile before soil cement not yet initial set to be inserted into cement soil wall 2, is pressed simultaneously
Verticality correction is carried out using theodolite according to design requirement；
Step 5：After drum construction of prefabricated piles is adjusted in rigidity, design requirement construction concrete Guan Liang 3 is pressed in stake top,
And in reserving prestress wire inserting hole in concrete Guan Liang；
Step 6：Excavation pit sets inner support, while using the monitoring of soil body deep horizontal inclinometer according to design requirement
Foundation pit deformation situation and by stress meter monitor pile body stress, when deform it is excessive, reach design early warning value when, in concrete
3 back stretch-draw prestressing force steel strand wires of Guan Liang increase or adjust drum prefabricated pile rigidity, control the further development of foundation pit deformation；
Step 7：Persistently carry out deformation monitoring, and do not turn off dig foundation pit until excavation of foundation pit on earth, construct agent structure base
Plinth bottom plate；By design requirement construction agent structure.
Positive beneficial effect：Cement soil wall adaptation stratum in the utility model is wide, to hardpan（Pan soil, sand ovum gravel
Stone, soft rock etc.）With good penetration performance, into wall precision height.It is applied into wall driving with that can be realized by Parameters Instrument during stirring
Work overall process monitors wall quality with brill；Discreteness is small, and intensity is high, upper and lower even intensity, and water isolating is good；Compared to
Traditional handicraft, canal formula cut the intensity higher for the Soil-cement Wall to be formed, and planarization, continuity, compactness, uniformity are more
Good, depth is also deeper, soil layer better adaptability；Continuously into wall, seam is less, and drum prefabricated pile is adjusted in wall uniform thickness, rigidity
Spacing can adjust according to the design needs, not limited by stake position；Noise, with small vibration, adjoining is built（Structure）It builds object and is permitted minimum to wall core
Spacing only 1000 mm.The supporting construction is not only easy to operate, but also easy for construction quick, reliable, while has given full play to rigidity
Adjustable drum prefabricated pile strength grade of concrete is high, prestressing force can reach according to the characteristics of Field adjustment and shortened the construction period, drop
The purpose of low project cost can not only reduce the dosage of concrete and steel, but also can meet safety requirements in this way.
Description of the drawings
Fig. 1 is supporting construction diagrammatic cross-section in the utility model；
Fig. 2 is supporting construction floor map in the utility model；
Fig. 3 is that the prefabricated stake body Longitudinal cross section schematic of drum is adjusted in the rigidity in the utility model；
Fig. 4 is that the prefabricated stake body cross-sectional view of drum is adjusted in the rigidity in the utility model；
Fig. 5 is that the prefabricated pile end plate top view structure diagram of drum is adjusted in the rigidity in the utility model；
Fig. 6 is that drum prefabricated pile support construction flow chart is adjusted in cement soil wall interpolation rigidity；
It is in figure：Drum prefabricated pile 2, concrete Guan Liang 3, steel strand wires casing 4, prestressing force is adjusted in cement soil wall 1, rigidity
Steel strand wires 5, steel strand anchorage 6, pile body longitudinal reinforcement 7, web both sides pre-embedded steel slab 8, polygon steel end plate 9, rectangle steel end plate
10。
Specific embodiment
In order to be easy to understand technological means of the utility model, creative feature, reached purpose and effect,
The utility model is expanded on further below in conjunction with the accompanying drawings.
As shown in Fig. 1, Fig. 6, drum prefabricated pile supporting construction is adjusted in a kind of cement soil wall interpolation rigidity, stops including being used for
Drum prefabricated pile 2 is adjusted in the cement soil wall 1 of water and the rigidity for earth-retaining being arranged in cement soil wall 1；Described is firm
Adjustable 2 top of drum prefabricated pile of degree is provided with concrete Guan Liang 3；
It is 0.55~0.6 that the pile body short side of drum prefabricated pile 2 and long side ratio, which is adjusted, in the rigidity；The rigidity
Adjustable drum prefabricated pile concrete strength of pile grade is C55~C80；
As shown in Fig. 3, Fig. 4, Fig. 5, the pile body both ends that drum prefabricated pile 2 is adjusted in the rigidity are respectively arranged with 2 pieces
Polygon steel end plate 9 and one piece of rectangle steel end plate 10, and the pre-buried 2 pieces of web both sides pre-embedded steel slab 8 in stake bottom and stake top web both sides；
As shown in Fig. 2, the rigidity be adjusted in the pile body of drum prefabricated pile 2 be embedded with more can stretch-draw prestressing force steel
Twisted wire 5 and pile body longitudinal reinforcement 7；All prestress wires 5 are fixed on drum prefabricated pile stake bottom in pile body bottom end by anchorage
On end plate, wherein 75% steel strand wires are anchored at by steel strand anchorage 6 on pile crown end plate on pile body top, 25% steel strand is reserved
Line, the later stage, steel strand wires were reserved in tensioning according to engineering site foundation pit soil horizontal displacement situation, compensated loss of prestress, into
One step increases or adjusts drum prefabricated pile rigidity；
The rigidity, which is adjusted on the pile body of drum prefabricated pile, sets 4 prestress wires to intert steel sleeve 4, constructs
Preceding calculated according to design requires to penetrate reserved steel strand wires in prestress steel twist thread casing 4；
The rigidity is adjusted 2 compartment of terrain of drum prefabricated pile and is inserted in cement soil wall 1；Work is adjusted in the rigidity
The clear spacing of type prefabricated pile 2 is 20~35cm；The pile body short side that drum prefabricated pile is adjusted in the rigidity is put down with cement soil wall
Row, pile body long side are 0.7~0.8 times of cement soil wall thickness；
The verticality that drum prefabricated pile insertion cement soil wall is adjusted in the rigidity should be with cement soil wall construction verticality
It is consistent, and no more than 1/300；
The wall position deviation of cement soil wall 1 is not more than+20mm~-50mm（Into hole, deviation is just）, wall depth deviation is less than
50mm should be not less than design wall thickness into wall thickness, and deviation is controlled in 0~-20mm（Control cutting box tip size deviation）；Cement
The 28d slurries test block unconfined compressive strengths standard value of cob wall is not less than 1.0MPa, 28d boring and coring unconfined compressive strength marks
Quasi- value is not more than 10 not less than 0.8MPa, wall permeability coefficient-7cm/s；Drum prefabricated pile is adjusted in cement soil wall interpolation rigidity
In supporting construction, the wall end of cement soil wall answers specific stiffness that drum prefabricated pile end depth 1.5m~2.5m is adjusted；
The thickness of cement soil wall 1 takes 450 mm~850mm；When wall thickness is not more than 550mm, maximum construction depth is unsuitable
More than 25m；When wall thickness is not more than 700m, maximum construction depth is not preferably greater than 40m；When wall thickness is not more than 850mm, maximum is applied
Work depth is not preferably greater than 55m；After drum prefabricated pile site operation pile, stake top setting concrete Guan Liang 3, and concrete Guan Liang 3
Highly it is less than 4 prestress steel twist thread casing 5cm of pile body upper end setting；Stake top setting concrete Guan Liang construction is completed to reach to set
After counting intensity, according to live Excavation Process soil body deeply mixing cement-soil pile situation of change, steel strand hole-specifically, by root tensioning is reserved
Line increases or adjusts drum prefabricated pile rigidity.
The construction method of drum prefabricated pile supporting construction is adjusted in a kind of cement soil wall interpolation rigidity, is as follows：
Step 1：Smooth construction site carries out cement soil wall cutting and stirs into wall construction；
Step 2：Drum prefabricated pile type selecting is adjusted in rigidity, and factory makes and tentatively applies prestressing force, passes through end plate steel
Twisted wire anchorage 6, fixed a part of prestress wire 5；
Step 3：Drum prefabricated pile insertion leading truck is adjusted in setting rigidity and hoist is in place；
Step 4：Rigidity is adjusted drum prefabricated pile before soil cement not yet initial set to be inserted into cement soil wall 2, is pressed simultaneously
Verticality correction is carried out using theodolite according to design requirement；
Step 5：After drum construction of prefabricated piles is adjusted in rigidity, design requirement construction concrete Guan Liang 3 is pressed in stake top,
And in reserving prestress wire inserting hole in concrete Guan Liang；
Step 6：Excavation pit sets inner support, while using the monitoring of soil body deep horizontal inclinometer according to design requirement
Foundation pit deformation situation and by stress meter monitor pile body stress, when deform it is excessive, reach design early warning value when, in concrete
3 back stretch-draw prestressing force steel strand wires of Guan Liang increase or adjust drum prefabricated pile rigidity, control the further development of foundation pit deformation；
Step 7：Persistently carry out deformation monitoring, and do not turn off dig foundation pit until excavation of foundation pit on earth, construct agent structure base
Plinth bottom plate；By design requirement construction agent structure.
As shown in attached drawing 1~6, the supporting construction of drum prefabricated pile is adjusted in cement soil wall interpolation rigidity, can including rigidity
It adjusts drum prefabricated pile steel strand wires to intert and be anchored, cement soil wall stirs into wall, and rigidity is adjusted drum prefabricated pile is inserted into water
Within the walls, concrete Guan Liang of constructing, the later stage is according to earth horizontal displacement stretch-draw prestressing force steel strand wires, this five flows for soil.
Rigidity, which is adjusted in drum prefabricated pile, is configured with more prestress wires 5 and pile body longitudinal reinforcement 7, prestress steel
Twisted wire uses 15.2 soap-free emulsion polymeization types, and quantity is calculated according to design and determined, the setting of drum prefabricated pile stake end is adjusted in the rigidity
There is 1 piece of rectangle steel end plate 10 of 2 pieces of polygon steel end plates 9 and setting, wherein before drum prefabricated pile is inserted into cement soil wall, it is all pre-
Prestress steel strand 5 should be fixed on by anchorage 6 on a bottom end plate, and stake top anchorage only fixes 75% prestress wire.Rigidity
Adjustable drum prefabricated pile web both sides set 2 pieces of pre-embedded steel slabs 8, polygon steel end plate 9 and rectangle steel end plate 10 and abdomen respectively
Plate both sides pre-embedded steel slab 8 is adjusted the welding of drum preformed pile connecting for rigidity and uses, and web both sides pre-embedded steel slab plays two sections
Stake web side booster action after stake welding.Drum prefabricated pile is adjusted in factory process in rigidity, and sectional dimension, length and pile body mix
Solidifying native strength grade should calculate requirement according to design and determine, rigidity is adjusted after drum stake is made and transports to construction site.
During construction, carry out fluting cutting soil first and stir to form cement soil wall（1）, further according to design length and ruler
It is very little, by more piece rigidity be adjusted drum prefabricated pile be welded to connect by polygon steel end plate 9 and rectangle steel end plate 10 it is integral, together
When by stake web both sides pre-embedded steel slab 8 strengthen connect, be finally adjusted using crawler type lifting machine by ready rigidity is connected
Drum prefabricated pile, which is sling, to be inserted into cement soil wall, and implantation depth is determined according to requirement of engineering.
Construction equipment is moved into second position for needing cement soil wall interpolation rigidity that drum prefabricated pile is adjusted, implement with
Upper identical operation.
After rigidity is adjusted in drum prefabricated pile insertion cement soil wall, before concrete Guan Liang of constructing, set reserved
The outside steel sleeve 4 of 25% prestress wire；Steel sleeve uses diameter 48mm, the scaffolding steel pipe of wall thickness 3mm.Outside steel bushing
Pipe 4 is adjusted drum stake polygon end plate 9 with rigidity by welding and links together, and steel sleeve 4 height in outside is more than concrete
Guan Liang 5cm, it is ensured that Guan Liang concreting and when vibrating, without Concrete Filled in steel sleeve.
After concrete Guan Liang construction end curing strength reaches design requirement, deep pit excavation.In excavation of foundation pit and underground
Room construction period, soil body deeply mixing cement-soil pile on the outside of overall process monitoring foundation pit, and according to land movement size, what tensioning was reserved
The prestress wire of 25% non-tensioning carries out stiffness tuning, reaches increase or adjusts drum prefabricated pile pile body stiffness, and then support
The purpose of anti-soil deformation.
After steel strand tension, 3 top of concrete Guan Liang is fixed on by anchorage.
Cement soil wall adaptation stratum in the utility model is wide, to hardpan（Pan soil, sand boulder and cobble, soft rock etc.）Tool
There is good penetration performance, into wall precision height.Into wall tunnel with stir when by Parameters Instrument can realize construction overall process to wall
Weight is monitored with brill；Discreteness is small, and intensity is high, upper and lower even intensity, and water isolating is good；Compared to traditional handicraft, canal formula
The intensity higher of the Soil-cement Wall formed is cut, planarization, continuity, compactness, uniformity are more preferable, and depth is also deeper,
Soil layer better adaptability；Continuously into wall, seam is less, wall uniform thickness, and drum prefabricated pile spacing is adjusted in rigidity can be according to setting
Meter needs to adjust, and is not limited by stake position；Noise, with small vibration, adjoining is built（Structure）It builds object and is permitted minimum spacing only 1000 mm to wall core.
The supporting construction is not only easy to operate, but also easy for construction quick, reliable, while has given full play to rigidity that drum is adjusted is prefabricated
Pile concrete strength grade is high, prestressing force can reach the mesh for shortening the construction period, reducing project cost according to the characteristics of Field adjustment
, the dosage of concrete and steel can be not only reduced in this way, but also can meet safety requirements.
The advantages of basic principle, main feature and the utility model described above and that describe the utility model, only
The preferred embodiment of the utility model, is not intended to limit the utility model, all in the spirit and principles of the utility model
Within all any modification, equivalent and improvement made etc., should be included within the protection domain of the requires of the utility model.
Claims (9)
1. drum prefabricated pile supporting construction is adjusted in a kind of cement soil wall interpolation rigidity, it is characterised in that：Including being used for sealing
Cement soil wall（1）And it is arranged on cement soil wall（1）Drum prefabricated pile is adjusted in the interior rigidity for earth-retaining（2）；Described
Drum prefabricated pile is adjusted in rigidity（2）Top is provided with concrete Guan Liang（3）.
2. drum prefabricated pile supporting construction, feature is adjusted in a kind of cement soil wall interpolation rigidity according to claim 1
It is：Drum prefabricated pile is adjusted in the rigidity（2）Pile body short side and long side ratio be 0.55~0.6；The rigidity
Adjustable drum prefabricated pile concrete strength of pile grade is C55~C80.
3. drum prefabricated pile supporting construction, feature is adjusted in a kind of cement soil wall interpolation rigidity according to claim 1
It is：Drum prefabricated pile is adjusted in the rigidity（2）Pile body both ends be respectively arranged with 2 pieces of polygon steel end plates（9）With one
Block rectangle steel end plate（10）, and the pre-buried 2 pieces of web both sides pre-embedded steel slab in stake bottom and stake top web both sides（8）.
4. drum prefabricated pile supporting construction, feature is adjusted in a kind of cement soil wall interpolation rigidity according to claim 1
It is：Drum prefabricated pile is adjusted in the rigidity（2）Pile body in be embedded with more can stretch-draw prestressing force steel strand wires（5）And stake
Body longitudinal reinforcement（7）；All prestress wires（5）Drum prefabricated pile stake bottom end plate is fixed on by anchorage in pile body bottom end
On, wherein 75% steel strand wires pass through steel strand anchorage on pile body top（6）It is anchored on pile crown end plate, reserves 25% steel strand
Line, the later stage, steel strand wires were reserved in tensioning according to engineering site foundation pit soil horizontal displacement situation, compensated loss of prestress, into
One step increases or adjusts drum prefabricated pile rigidity.
5. drum prefabricated pile supporting construction, feature is adjusted in a kind of cement soil wall interpolation rigidity according to claim 4
It is：The rigidity, which is adjusted on the pile body of drum prefabricated pile, sets 4 prestress wires to intert steel strand wires casing（4）,
Requirement is calculated according to design before construction, reserved steel strand wires are penetrated into prestress steel twist thread casing（4）It is interior.
6. drum prefabricated pile supporting construction, feature is adjusted in a kind of cement soil wall interpolation rigidity according to claim 1
It is：Drum prefabricated pile is adjusted in the rigidity（2）Compartment of terrain is inserted in cement soil wall（1）It is interior；The rigidity is adjusted
Drum prefabricated pile（2）Clear spacing be 20~35cm；The pile body short side and soil cement of drum prefabricated pile is adjusted in the rigidity
Wall is parallel, and pile body long side is 0.7~0.8 times of cement soil wall thickness.
7. drum prefabricated pile supporting construction, feature is adjusted in a kind of cement soil wall interpolation rigidity according to claim 1
It is：The verticality that drum prefabricated pile insertion cement soil wall is adjusted in the rigidity should be kept with cement soil wall construction verticality
Unanimously, and no more than 1/300.
8. drum prefabricated pile supporting construction, feature is adjusted in a kind of cement soil wall interpolation rigidity according to claim 1
It is：The cement soil wall（1）Wall position deviation no more than+20mm~-50mm, into hole, deviation is just, wall depth deviation is small
In 50mm, design wall thickness should be not less than into wall thickness, deviation control is in 0~-20mm, control cutting box tip size deviation；Water
The 28d slurries test block unconfined compressive strengths standard value of soil wall is not less than 1.0MPa, 28d boring and coring unconfined compressive strengths
Standard value is not less than 0.8MPa, and wall permeability coefficient is not more than 10-7cm/s；Drum prefabricated pile is adjusted in cement soil wall interpolation rigidity
Supporting construction in, the wall end of cement soil wall answers specific stiffness that drum prefabricated pile end depth 1.5m~2.5m is adjusted.
9. drum prefabricated pile supporting construction, feature is adjusted in a kind of cement soil wall interpolation rigidity according to claim 1
It is：Cement soil wall（1）Thickness take 450 mm~850mm；When wall thickness is not more than 550mm, maximum construction depth should not be big
In 25m；When wall thickness is not more than 700m, maximum construction depth is not preferably greater than 40m；When wall thickness is not more than 850mm, maximum construction
Depth is not preferably greater than 55m；After drum prefabricated pile site operation pile, stake top setting concrete Guan Liang（3）, and concrete Guan Liang
（3）Highly it is less than 4 prestress steel twist thread casing 5cm of pile body upper end setting；Stake top setting concrete Guan Liang construction is completed to reach
To after design strength, according to live Excavation Process soil body deeply mixing cement-soil pile situation of change, hole-specifically, by root tensioning steel is reserved
Twisted wire increases or adjusts drum prefabricated pile rigidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092849.1U CN207469230U (en) | 2017-08-29 | 2017-08-29 | Drum prefabricated pile supporting construction is adjusted in a kind of cement soil wall interpolation rigidity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721092849.1U CN207469230U (en) | 2017-08-29 | 2017-08-29 | Drum prefabricated pile supporting construction is adjusted in a kind of cement soil wall interpolation rigidity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107326898A (en) * | 2017-08-29 | 2017-11-07 | 南京市测绘勘察研究院股份有限公司 | A kind of cement soil wall interpolation rigidity can adjust drum prefabricated pile supporting construction and its construction method |
| CN109469069A (en) * | 2018-11-27 | 2019-03-15 | 浙江坤德创新岩土工程有限公司 | A kind of I-shaped support pile of prestressing force and foundation pit supporting method |
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2017
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107326898A (en) * | 2017-08-29 | 2017-11-07 | 南京市测绘勘察研究院股份有限公司 | A kind of cement soil wall interpolation rigidity can adjust drum prefabricated pile supporting construction and its construction method |
| CN109469069A (en) * | 2018-11-27 | 2019-03-15 | 浙江坤德创新岩土工程有限公司 | A kind of I-shaped support pile of prestressing force and foundation pit supporting method |
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