CN208251111U - The Double-row Piles Support system of the local soft soil property of foundation pit can be overcome - Google Patents
The Double-row Piles Support system of the local soft soil property of foundation pit can be overcome Download PDFInfo
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- CN208251111U CN208251111U CN201820363950.4U CN201820363950U CN208251111U CN 208251111 U CN208251111 U CN 208251111U CN 201820363950 U CN201820363950 U CN 201820363950U CN 208251111 U CN208251111 U CN 208251111U
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Abstract
The utility model discloses the Double-row Piles Support systems that one kind can overcome the local soft soil property of foundation pit, it solves to the double triangle Double-row Piles Support partial alteration for having selected and having implemented into other support forms, the support form of existing partial alteration is not perfect with the connection that double triangle supporting construction is completed, and easily causes the non-uniform problem of local pressure.Rear side attachment beam (6) is provided between campshed after rear side (10) and preceding campshed (1), intermediate attachment beam (7) are provided between campshed behind centre (9) and preceding campshed, front side attachment beam (8) is provided between campshed behind front side (2) and preceding campshed, crown beam (5) are being provided between campshed after campshed behind campshed after rear side (10), centre and front side, high inclination-angle rotary churning pile (3) are being provided with after preceding campshed and centre between campshed, inserted with precast concrete beam (4) in high inclination-angle rotary churning pile.Design strength is met, and does not change the overall structure of design of its support.
Description
Technical field
The present invention relates to a kind of buildings of system of deep foundation pit support, in particular to a kind of to be directed to deep basal pit and substrate part soil
Layer relatively soft double-row pile mechanism and its construction method.
Background technique
Deep basal pit Double-row Piles Support has been developed in recent years a kind of novel supporting construction, with other supporting construction bodies
System compares, and Double-row Piles Support form has good lateral rigidity, can effectively limit the lateral deformation of supporting construction.Double-row pile
Support design method and construction have that convenient, lateral fulcrum, soil-baffling structure stress condition is good, it is steady to be able to maintain foundation pit without being arranged
Calmly, it the advantages that construction safety, is widely used in engineering.The Double-row Piles Support of double triangle is suitable for soil layer mechanism phase
To solid deep basal pit, have the characteristics that filling stake quantity is few, supporting intensity is high, project cost is lower, easy for construction.But specific
In construction, when local soil property soft situation relatively occurs in somewhere in deep basal pit, the intensity of double triangle supporting construction will drop
It is low, it is not able to satisfy design requirement, the prior art is to the double triangle Double-row Piles Support partial alteration for having selected and having implemented at it
Its support form, it is not perfect with connection that double triangle supporting construction is completed that there are the support forms of partial alteration, is easy to draw
Local discontinuity is played, the intensity of integer support is influenced.
Summary of the invention
The present invention provides Double-row Piles Support systems and construction method that one kind can overcome the local soft soil property of foundation pit, solve
To the double triangle Double-row Piles Support partial alteration that has selected and implemented at other support forms, existing partial alteration
Support form is not perfect with the connection that double triangle supporting construction is completed, and easily causes the non-uniform technology of local pressure and asks
Topic.
The present invention is to solve the above technical problem by the following technical programs:
A kind of Double-row Piles Support system overcoming the local soft soil property of foundation pit, after at foundation pit locally soft soil property
Campshed behind side, it is intermediate after campshed and preceding campshed behind campshed, front side, rear side connection is provided between campshed after rear side and preceding campshed
Beam, is provided with intermediate attachment beam between campshed behind centre and preceding campshed, before being provided between campshed behind front side and preceding campshed
Side attachment beam is being provided with crown beam between campshed after campshed behind campshed, centre after rear side and front side, in preceding campshed and intermediate heel row
It is provided with high inclination-angle rotary churning pile between stake, inserted with precast concrete beam in high inclination-angle rotary churning pile.
Angle between high inclination-angle rotary churning pile and intermediate attachment beam is 50-75 degree.
A kind of construction method overcoming the local Double-row Piles Support system of soft soil property of foundation pit, comprising the following steps:
The first step, construct campshed after rear side, it is intermediate after campshed behind campshed and front side, method particularly includes: remove rear side heel row
Stake stake holes, it is intermediate after residue behind campshed stake holes and front side in campshed stake holes；Respective steel reinforcement cage is transferred into respective stake holes
Bottom hole, then respective concrete steel conduit is transferred, carry out second of borehole cleaning, then, continuous pouring underwater concrete, until stake holes
Until slurry is returned in aperture, after the completion of perfusion, conduit, campshed after formation are dismantled；
Second step, after campshed concrete final set stablize after, from the stake top platform inner side of preceding campshed to centre after
The direction of campshed performs high inclination-angle rotary churning pile, and high inclination-angle rotary churning pile takes segmentation rotary-spraying construction, and construction angle is 50-75 degree, greatly
Inclination angle rotary churning pile links together preceding campshed and campshed behind centre, after high inclination-angle jet grouting pile construction, at its concrete end
It coagulates before stablizing, precast concrete pile is inserted into high inclination-angle rotary churning pile；
Third step constructs preceding campshed, and the upper end of precast concrete pile and the steel reinforcement cage of preceding campshed are linked together；
After the concrete final set of 4th step, current campshed is stablized, rear side attachment beam, intermediate attachment beam, front side connection are carried out
Beam and constructing for crown beam perform, and complete constructing for double triangle Double-row Piles Support systems.
It can be directed in work progress the purpose of the present invention is to provide a kind of, exploration before soil layer part practical structures and design
Soil layer construction existing for deviation when, the construction method of local stiffening is carried out to the supporting construction that has designed；It is strong to meet design
Degree, and do not change the overall structure of design of its support.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing:
A kind of Double-row Piles Support system overcoming the local soft soil property of foundation pit, after at foundation pit locally soft soil property
Campshed 10 behind side, it is intermediate after campshed 2 and preceding campshed 1 behind campshed 9, front side, be provided between campshed 10 and preceding campshed 1 after rear side
Rear side attachment beam 6 is being provided with intermediate attachment beam 7 between campshed 9 and preceding campshed 1 behind centre, campshed 2 and preceding campshed behind front side
It is provided with front side attachment beam 8 between 1, is being provided with crown beam between campshed 2 after campshed 9 behind campshed 10, centre after rear side and front side
5, it is being provided with high inclination-angle rotary churning pile 3 between campshed 9 after preceding campshed 1 and centre, inserted with prefabricated mixed in high inclination-angle rotary churning pile 3
Solidifying soil beam 4.
Angle between high inclination-angle rotary churning pile 3 and intermediate attachment beam 7 is 50-75 degree.
A kind of construction method overcoming the local Double-row Piles Support system of soft soil property of foundation pit, comprising the following steps:
The first step, construct campshed 10 after rear side, it is intermediate after campshed 2 behind campshed 9 and front side, method particularly includes: remove rear side
Afterwards campshed stake holes, it is intermediate after residue behind campshed stake holes and front side in campshed stake holes；Respective steel reinforcement cage is transferred to respective
Stake holes bottom hole, then respective concrete steel conduit is transferred, second of borehole cleaning is carried out, then, continuous pouring underwater concrete, until
Until slurry is returned in stake holes aperture, after the completion of perfusion, conduit, campshed after formation are dismantled；
Second step, after campshed concrete final set stablize after, from the stake top platform inner side of preceding campshed 1 to centre after
The direction of campshed 9 performs high inclination-angle rotary churning pile 3, and high inclination-angle rotary churning pile 3 takes segmentation rotary-spraying construction, and construction angle is 50-75
Degree, high inclination-angle rotary churning pile 3 links together preceding campshed 1 and campshed 9 behind centre, after high inclination-angle rotary churning pile 3 is constructed, at it
Before concrete final set is stablized, precast concrete pile 4 is inserted into high inclination-angle rotary churning pile 3；
Third step constructs preceding campshed 1, and the upper end of precast concrete pile 4 and the steel reinforcement cage of preceding campshed 1 are linked together；
After the concrete final set of 4th step, current campshed 1 is stablized, progress rear side attachment beam 6, intermediate attachment beam 7, front side connect
It connects beam 8 and constructing for crown beam 5 performs, complete constructing for double triangle Double-row Piles Support systems.
The present invention be directed to the construction methods of Double-row Piles Support local strengthening, in double triangle Double-row Piles Support, this hair
The bright double triangle Double-row-piles Structure for being provided with concrete-cored rotary churning pile, by preceding campshed 1, rear campshed, high inclination-angle rotary churning pile 3, prefabricated mixed
Solidifying soil stake 4, crown beam 5 and three linking beam compositions.Construction method are as follows: the residue after removing in campshed, then to rear campshed
Hole depth, hole location, hole shape, aperture etc. are checked, natural mud are injected in aperture using slush pump and conduit, repeated flushing,
Sediment is finally cleared up in device to hole, and injects air toward bottom hole using air compressor machine, the water generated in hole with mud mixing using it
Pressure, simultaneously develops sand setting and sediment, whole hole bottom hole sediment thickness will be met the requirements.The steel reinforcement cage of campshed is down toward bottom hole afterwards
Afterwards, then lower concrete steel conduit；DN125 concrete steel conduit uses screwed connection, in order to guarantee conduit in casting and compacting of concrete
Pipe can be mentioned after the completion, in final section catheter tail one U type hanging ring of reinforcement welding, connect the wirerope in tripping in hole
Onto hanging ring.After steel reinforcement cage and conduit tripping in, that is, carrying out second of borehole cleaning, it is desirable that borehole cleaning to bottom hole sediment is not more than 50 millimeters,
Borehole cleaning to mud balance, which reaches design requirement, to be stopped.Perfusion Underwater Concrete will be carried out continuously, and must not be interrupted, and guarantee concrete piles quality, directly
Slurry is returned to aperture, to guarantee concrete piles quality.After the completion of perfusion, conduit is dismantled, and notices that stake top is protected.It is steady to heel row quality of pile
After fixed, high inclination-angle rotary churning pile 3, rotary churning pile 3 are performed from the stake top platform inner side of preceding campshed 1 to the direction of campshed 9 behind centre
Segmentation rotary-spraying construction is taken, construction angle is 50-75 degree, and terminal position is minimum position, rotary churning pile at a distance from rear campshed
After 3 constructions, before its quality is stablized, precast concrete pile 4 is inserted.After band whirl spraying quality of pile is stablized, preceding campshed 1
It constructs, specific method is identical as rear campshed, and 4 upper end of precast concrete pile links together with preceding 1 steel reinforcement cage of campshed.To preceding
After 1 mass of campshed is stablized, the construction of crown beam and linking beam is carried out.
Claims (2)
1. one kind can overcome the Double-row Piles Support system of the local soft soil property of foundation pit, including the rear side at foundation pit locally soft soil property
Afterwards campshed (10), it is intermediate after campshed (2) and preceding campshed (1) behind campshed (9), front side, which is characterized in that campshed (10) after rear side
It is provided with rear side attachment beam (6) between preceding campshed (1), is provided with centre between campshed behind centre (9) and preceding campshed (1) and connects
Connect beam (7), be provided between campshed behind front side (2) and preceding campshed (1) front side attachment beam (8), after rear side campshed (10), in
Between after be provided with crown beam (5) between campshed (2) behind campshed (9) and front side, set between campshed (9) after preceding campshed (1) and centre
High inclination-angle rotary churning pile (3) are equipped with, inserted with precast concrete beam (4) in high inclination-angle rotary churning pile (3).
2. one kind according to claim 1 can overcome the Double-row Piles Support system of the local soft soil property of foundation pit, feature exists
In the angle between high inclination-angle rotary churning pile (3) and intermediate attachment beam (7) is 50-75 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820363950.4U CN208251111U (en) | 2018-03-18 | 2018-03-18 | The Double-row Piles Support system of the local soft soil property of foundation pit can be overcome |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820363950.4U CN208251111U (en) | 2018-03-18 | 2018-03-18 | The Double-row Piles Support system of the local soft soil property of foundation pit can be overcome |
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| Publication Number | Publication Date |
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| CN208251111U true CN208251111U (en) | 2018-12-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605398A (en) * | 2021-07-14 | 2021-11-05 | 广州市设计院集团有限公司 | Foundation pit supporting mechanism |
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2018
- 2018-03-18 CN CN201820363950.4U patent/CN208251111U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113605398A (en) * | 2021-07-14 | 2021-11-05 | 广州市设计院集团有限公司 | Foundation pit supporting mechanism |
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Address after: 110136 No. 36 Shenbei Road, Shenyang New District, Shenyang City, Liaoning Province Patentee after: China Railway 19th Bureau No.3 Engineering Co., Ltd. Address before: 110136 No. 36 Shenbei Road, Shenbei New District, Liaoyang City, Liaoning Province Patentee before: China Railway 19th Bureau No.3 Engineering Co., Ltd. |