CN108468338A - Interim deep pit support protection unit and construction method for stake support structure - Google Patents
Interim deep pit support protection unit and construction method for stake support structure Download PDFInfo
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- CN108468338A CN108468338A CN201810447337.5A CN201810447337A CN108468338A CN 108468338 A CN108468338 A CN 108468338A CN 201810447337 A CN201810447337 A CN 201810447337A CN 108468338 A CN108468338 A CN 108468338A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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Abstract
A kind of interim deep pit support protection unit and construction method for stake support structure, it include the fence suspension device being arranged on foundation pit side-wall, it is arranged between two fence supportings and across the connection lever apparatus of foundation pit, foundation pit side-wall is vertically isolated reinforcing by fence suspension device, two fence supportings are risen on foundation pit outside by connecting lever apparatus, realize the support reinforcement before excavation of foundation pit, anchor pole and anchor cable is not used to reinforce the foundation pit side-wall after excavation, therefore it meets in the confined space of city and the geological state of complex foundation carries out the needs of excavation of foundation pit, improve security performance.
Description
Technical field
The present invention relates to a kind of suspension device and construction methods, especially a kind of interim deep pit support for stake support structure
Protection unit and construction method.
Background technology
In Process of Urban Development, need to build underground pipe gallery, rail traffic, the deep basal pit of underground station and part
The underground engineering project of skyscraper underground garage is needed in Excavation Process, carrying out engineering support to foundation pit side-wall and adding
Gu due to carrying out deep pit digging and supporting in the limited space in city, it is to belong to gib, is accordingly used in a support structure
Interim deep pit support protection unit and construction method be a kind of important safety guard, existing for stake support structure
In interim deep pit support protection unit and construction method, there are no a kind of deep pit support protection units for stake support structure, are also all
First excavation pit generally uses the suspension devices such as expendable cast-in-place concrete pile, waist rail, Guan Liang, and has used in life
The construction materials such as sandstone of serious pollution environment, cement, not only form underground pollution, and aggravated air during production
There is very high security risk since the geological state for carrying out excavation of foundation pit and ground in the confined space of city is complicated in pollution,
A kind of deep pit support protection unit for stake support structure currently not yet.
Based on existing technical problem, technical characteristic and technique effect, the application technical solution of the present invention is made.
Invention content
The object of the present invention is a kind of deep pit support protection unit for stake support structure,
The object of the present invention is a kind of construction method of the deep basal pit for stake support structure.
In order to overcome the technical drawbacks described above, the object of the present invention is to provide a kind of deep foundation pit support dresses for stake support structure
It sets, therefore meets the needs for carrying out excavation of foundation pit with the geological state of complex foundation in the confined space of city, improve peace
Full performance.
In order to achieve the above objectives, the technical solution adopted by the present invention is that：It include the fence branch being arranged on foundation pit side-wall
Protection unit is arranged between two fence supportings and across the connection lever apparatus of foundation pit.
Due to devising fence suspension device and connection lever apparatus, foundation pit side-wall is vertically isolated by fence suspension device
It reinforces, by connecting lever apparatus rising on foundation pit outside two fence supportings, realizes the support reinforcement before excavation of foundation pit, no longer
The foundation pit side-wall after excavation is reinforced using anchor pole and anchor cable, therefore is met in the confined space of city and complex foundation
Geological state carry out excavation of foundation pit needs, improve security performance.
The present invention devises, the fence supporting for side shield in the way of forming inner frame and carrying out support reinforcement
Device and the connection lever apparatus being used to support are coupled to each other.
The present invention devises, and fence suspension device and connection lever apparatus are respectively set to form dismountable frame by prefabricated component
Frame.
The present invention devises, and also includes pile cover and linked network spray sheath, and fence suspension device is set as including steel-pipe pile
And Guan Liang, connection lever apparatus are set as including waist rail and supporting rack,
The bottom terminal ends of steel-pipe pile are arranged in foundation pit ground and the top end of steel-pipe pile are provided with pile cover, opposite
It is provided with waist rail between two steel-pipe piles and is provided with supporting rack on steel-pipe pile, waist rail is arranged on supporting rack and Guan Liang
It is set as being serially connected on pile cover, linked network spray sheath is provided on the side wall of foundation pit.
The present invention devises, and steel-pipe pile, waist rail, supporting rack, pile cover and Guan Liang are set as prefabricated component.
The present invention devises, and steel-pipe pile is provided in round column and steel-pipe pile is set as the side compartment along foundation pit
Distribution.
The present invention devises, and waist rail is set as including interconnecting piece and support portion and distinguish in the both ends end of support portion
It is provided with interconnecting piece, support portion is set as column and interconnecting piece is set as I-shaped rhabodoid, and the end face portion of interconnecting piece is set
Be set to couple with steel-pipe pile and support portion be arranged on supporting rack, waist rail is set as the side compartment arranged distribution along foundation pit
And the distance between two adjacent waist rails are set as 7500-8500mm.
The present invention devises, and supporting rack is set as the outer end end of cross bar and brace and cross bar and the outer end end of brace
It is respectively set to couple with steel-pipe pile, the angle between the center line of cross bar and the center line of brace is set as 45 ° and brace
The inclined-plane of outer end end and the center line of brace between angle be set as 45 °, waist rail is set as coupling with beam contact formula.
The present invention devises, and pile cover is set as including plate portion, stage portion and plug division and plate portion and plug division difference
It is arranged in the both ends end of stage portion, plate portion is set as plates and stage portion and plug division are respectively set to axis body, platform
Rank portion and plug division are set as being arranged in steel-pipe pile in the distribution of step arrangement mode and plug division, and Guan Liang is arranged in plate portion
On.
The present invention devises, and Guan Liang is set as U-shaped channel-shaped body and Guan Liang is set as extending distribution along through steel-pipe pile.
The present invention devises, linked network spray sheath be set as include civil grille, cement sand bed and waterproof roll layer simultaneously
And civil grille is set as being attached on the side wall of foundation pit, cement sand bed is set as being attached on civil grille and waterproof is rolled up
Material layer is set as being attached on cement sand bed.
The present invention devises, steel-pipe pile and Guan Liang be set as being distributed in the way of forming fence supporting and steel-pipe pile with
Waist rail and supporting rack are set as being distributed in the way of forming inner frame supporting, and the center line of steel-pipe pile and the center line of pile cover are set
It sets on same straight line.
The present invention devises, a kind of construction method of deep basal pit for stake support structure, and step is：The side of foundation pit in corridor
Fence suspension device is installed on the periphery in face, with the excavation of foundation pit, inner frame suspension device is installed in foundation pit, to foundation pit
Continue to excavate.
The present invention devises, and step is：Using down-the-hole drill, stake holes is formed on the periphery of the side of foundation pit, stake holes
Diameter is set as the distance between 144-148mm, adjacent two stake holes and is set as 550-650mm, uses air compressor machine and down-the-hole
Hammer, steel-pipe pile is driven into stake holes, the length of steel-pipe pile is set as 10000-11000mm, by Guan Liang the steel of one side
Pile pile links together, and the fence suspension device of the side wall of the deep basal pit for stake support structure is formed, between two rows of steel-pipe piles
Excavation pit, when excavation to depth is 1700-1900mm, the welding bracing frame on two opposite steel-pipe piles, opposite
Waist rail is welded between two steel-pipe piles and opposite two supporting racks, the distance between adjacent two waist rails are set as 7500-
8500mm connects the fence suspension device of the two side walls positioned at foundation pit with supporting rack by waist rail, forms inner frame supporting
Device, then excavation pit make the depth of foundation pit be set as 7900-8100mm, and piping lane component is put into foundation pit, in piping lane component
Upper Cast-in-situ Piles in Sand-filling boulder bed, the depth of sand pebble layer are set as 480-520mm, silty clay are filled and led up on sand pebble layer.
The technical effects of the invention are that：The present invention has been used for the deep foundation pit support of the interim shell dismounting of stake support structure, by
In recyclable suspension device, in the construction process, underground waste, air pollution are not generated, be conducive to underground environmental protection construction, prop up
Protection unit is detachable in the construction process, can recycle and install and use again again, when country precious resources section utilizing again, by
It can be reused in suspension device, in the construction process, Construction Cost can be greatly lowered, it is interim to be mainly used for deep basal pit
Supporting, and realize that the recycling of stake support and cycle reuse, due to not having the bored concrete pile using reinforced concrete structure, underground is not present
Discard structure pollution problem on the ground, environmental protection and energy saving can realize resource reutilization, due to do not have needed for concrete etc. the strong time,
Rapid construction can be achieved, shorten the construction period, the recycling of this support structure makes construction main material become circulation material, substantially drops
Low construction cost.
In the technical scheme, the fence suspension device of formation inner frame progress support reinforcement and connection lever apparatus, which are attached most importance to, wants
Technical characteristic has novelty, creativeness and practicality in the technical field for the deep pit support protection unit of stake support structure
Property, term in the technical scheme is all that can be explained and understood with patent document in the art.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to embodiment or existing skill
Attached drawing is briefly described needed in art description, it should be apparent that, the accompanying drawings in the following description is only the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the schematic diagram of the present invention：
Fig. 2 is the right view of Fig. 1：
Fig. 3 is the vertical view of Fig. 1：
Fig. 4 is the structural schematic diagram of the supporting rack 4 of the present invention
Fig. 5 is the structural schematic diagram of the pile cover 5 of the present invention：
Fig. 6 is the right view of Fig. 5.
Specific implementation mode
According to guidelines for examination, such as " having ", "comprising" and " comprising " term used in the present invention should be understood as not
Allot the presence or addition of one or more of the other element or combinations thereof.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is the orientation or positional relationship of general expression, is merely for convenience of
The description present invention and simplified description, do not indicate or imply the indicated device or element must have a particular orientation, with spy
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third "
It is used for description purposes only, is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
As long as in addition, technical characteristic involved in invention described below different embodiments non-structure each other
It can be combined with each other at conflict.
Below in conjunction in the embodiment of the present invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
A kind of deep pit support protection unit for stake support structure, Fig. 1 is one of one embodiment of the present invention, in conjunction with attached
Figure illustrates the present embodiment, includes steel-pipe pile 1, waist rail 2, supporting rack 4, pile cover 5, linked network spray sheath 6 and Guan Liang 7,
The bottom terminal ends of steel-pipe pile 1 are arranged in foundation pit ground and the top end of steel-pipe pile 1 are provided with pile cover 5, in phase
To two steel-pipe piles 1 between be provided with waist rail 2 and be provided with supporting rack 4 on steel-pipe pile 1, waist rail 2 is arranged in supporting rack 4
Upper and Guan Liang 7 is set as being serially connected on pile cover 5, and linked network spray sheath 6 is provided on the side wall of foundation pit.
In the present embodiment, steel-pipe pile 1, waist rail 2, supporting rack 4, pile cover 5 and Guan Liang 7 are set as prefabricated component.
By steel-pipe pile 1, waist rail 2, supporting rack 4, pile cover 5 and Guan Liang 7, the Fast Installation of construction site is realized.
In the present embodiment, steel-pipe pile 1 is provided in round column and steel-pipe pile 1 is set as along the side interval of foundation pit
Formula is distributed.
The side wall of foundation pit is vertically reinforced by steel-pipe pile 1, segmentation interface is formed on the periphery of foundation pit.
In the present embodiment, waist rail 2 is set as including interconnecting piece 21 and support portion 22 and at the both ends of support portion 22
End is respectively arranged with interconnecting piece 21, and support portion 22 is set as column and interconnecting piece 21 is set as I-shaped rhabodoid, even
The end face portion of socket part 21 is set as coupling with steel-pipe pile 1 and support portion 22 is arranged on supporting rack 4, and waist rail 2 is set as along base
The side compartment arranged distribution in hole and adjacent the distance between two waist rails 2 are set as 7500-8500mm.
Opposite steel-pipe pile 1 is in reinforcement connection by waist rail 2, while the steel-pipe pile of the side of foundation pit 1 is carried out outer
Support of rising is fixed.
In the present embodiment, supporting rack 4 is set as outer end end and the brace 42 of cross bar 41 and brace 42 and cross bar 41
Outer end end be respectively set to couple with steel-pipe pile 1, the angle between the center line and the center line of brace 42 of cross bar 41 is set
The angle being set between the inclined-plane and the center line of brace 42 of the outer end end of 45 ° and brace 42 is set as 45 °, and waist rail 2 is set
It is set to and couples with 41 contact of cross bar.
Shape holder at 45 °, improves the bonding strength between waist rail 2 and steel-pipe pile 1 between waist rail 2 and steel-pipe pile 1.
In the present embodiment, pile cover 5 be set as include plate portion 51, stage portion 52 and plug division 53 and plate portion 51 and insert
Socket part 53 is separately positioned on the both ends end of stage portion 52, and plate portion 51 is set as plates and stage portion 52 and plug division 53 are divided
It is not set as axis body, stage portion 52 and plug division 53 are set as being arranged in steel in the distribution of step arrangement mode and plug division 53
In pile pile 1, Guan Liang 7 is arranged in plate portion 51.
The face of impact force is improved by plate portion 51 by the impact force for the hole body that pile cover 5 bears to squeeze into steel-pipe pile 1
Product applies active force by stage portion 52 and plug division 53 to steel-pipe pile 1.
In the present embodiment, Guan Liang 7 is set as U-shaped channel-shaped body and Guan Liang 7 is set as along through the extension point of steel-pipe pile 1
Cloth.
The steel-pipe pile 1 of the side wall positioned at foundation pit is attached by Guan Liang 7, forms framed bent supporting.
In the present embodiment, linked network spray sheath 6 be set as include civil grille, cement sand bed and waterproof roll layer simultaneously
And civil grille is set as being attached on the side wall of foundation pit, cement sand bed is set as being attached on civil grille and waterproof is rolled up
Material layer is set as being attached on cement sand bed.
Sheath 6 is sprayed by linked network, support reinforcement is carried out to the side wall of foundation pit, increase the stability of the side wall of foundation pit.
In the present embodiment, steel-pipe pile 1 and Guan Liang 7 are set as being distributed in the way of forming fence supporting and steel-pipe pile
1 is set as being distributed in the way of forming inner frame supporting with waist rail 2 and supporting rack 4, the center line of steel-pipe pile 1 and pile cover 5
Center line is arranged on same straight line.
The two of one embodiment of the present invention, the distance between adjacent two waist rails 2 are set as 7500mm.
The three of one embodiment of the present invention, the distance between adjacent two waist rails 2 are set as 8500mm.
The four of one embodiment of the present invention, the distance between adjacent two waist rails 2 are set as 8000mm.
Second embodiment of the present invention, for side shield in the way of forming inner frame and carrying out support reinforcement
Fence suspension device and the connection lever apparatus being used to support are coupled to each other.
The present invention second embodiment be based on one embodiment,
A kind of construction method of deep basal pit for stake support structure further describes the present invention with reference to embodiment, below
Embodiment is intended to illustrate invention rather than limitation of the invention further.One of one embodiment of the present invention, step
Suddenly it is：
Using down-the-hole drill, stake holes is formed on the periphery of the side of foundation pit, the diameter of stake holes is set as 144-148mm, adjacent
The distance between two stake holes are set as 550-650mm, using air compressor machine and down-hole hammer, steel-pipe pile 1 are driven into stake holes, steel
The length of pile pile 1 is set as 10000-11000mm, the steel-pipe pile 1 of one side is linked together by Guan Liang 7, formation is used for
The fence suspension device of the side wall of the deep basal pit of stake support structure, the excavation pit between two rows of steel-pipe piles 1 are when excavating to depth
When 1700-1900mm, the welding bracing frame 4 on two opposite steel-pipe piles 1, in two opposite steel-pipe piles 1 and opposite two
Waist rail 2 is welded between a supporting rack 4, the distance between adjacent two waist rails 2 are set as 7500-8500mm, pass through 2 He of waist rail
Supporting rack 4 connects the fence suspension device of the two side walls positioned at foundation pit, forms inner frame suspension device, then excavation pit,
So that the depth of foundation pit is set as 7900-8100mm, piping lane component 8 is put into foundation pit, the Cast-in-situ Piles in Sand-filling boulder bed on piping lane component 8
9, the depth of sand pebble layer is set as 480-520mm, and silty clay is filled and led up on sand pebble layer 9.
The two of one embodiment of the present invention, step are：
Using down-the-hole drill, stake holes is formed on the periphery of the side of foundation pit, the diameter of stake holes be set as 144mm, adjacent two
The distance between stake holes is set as 550mm, and using air compressor machine and down-hole hammer, steel-pipe pile 1 is driven into stake holes, steel-pipe pile 1
Length is set as 10000mm, and the steel-pipe pile 1 of one side is linked together by Guan Liang 7, forms the deep base for stake support structure
The fence suspension device of the side wall in hole, the excavation pit between two rows of steel-pipe piles 1, when excavation to depth is 1700mm, in phase
To two steel-pipe piles 1 on welding bracing frame 4, weld waist between two opposite steel-pipe piles 1 and opposite two supporting racks 4
Beam 2, the distance between adjacent two waist rails 2 are set as 7500mm, by waist rail 2 and supporting rack 4 positioned at two of foundation pit
The fence suspension device of side wall connects, and forms inner frame suspension device, then excavation pit, the depth of foundation pit is made to be set as
7900mm is put into piping lane component 8 in foundation pit, and the Cast-in-situ Piles in Sand-filling boulder bed 9 on piping lane component 8, the depth of sand pebble layer is set as
480mm fills and leads up silty clay on sand pebble layer 9.
The three of one embodiment of the present invention, step are：
Using down-the-hole drill, stake holes is formed on the periphery of the side of foundation pit, the diameter of stake holes be set as 148mm, adjacent two
The distance between stake holes is set as 650mm, and using air compressor machine and down-hole hammer, steel-pipe pile 1 is driven into stake holes, steel-pipe pile 1
Length is set as 11000mm, and the steel-pipe pile 1 of one side is linked together by Guan Liang 7, forms the deep base for stake support structure
The fence suspension device of the side wall in hole, the excavation pit between two rows of steel-pipe piles 1, when excavation to depth is 1900mm, in phase
To two steel-pipe piles 1 on welding bracing frame 4, weld waist between two opposite steel-pipe piles 1 and opposite two supporting racks 4
Beam 2, the distance between adjacent two waist rails 2 are set as 8500mm, by waist rail 2 and supporting rack 4 positioned at two of foundation pit
The fence suspension device of side wall connects, and forms inner frame suspension device, then excavation pit, the depth of foundation pit is made to be set as
8100mm is put into piping lane component 8 in foundation pit, and the Cast-in-situ Piles in Sand-filling boulder bed 9 on piping lane component 8, the depth of sand pebble layer is set as
520mm fills and leads up silty clay on sand pebble layer 9.
The four of one embodiment of the present invention, step are：
Using down-the-hole drill, stake holes is formed on the periphery of the side of foundation pit, the diameter of stake holes be set as 146mm, adjacent two
The distance between stake holes is set as 600mm, and using air compressor machine and down-hole hammer, steel-pipe pile 1 is driven into stake holes, steel-pipe pile 1
Length is set as 10500mm, and the steel-pipe pile 1 of one side is linked together by Guan Liang 7, forms the deep base for stake support structure
The fence suspension device of the side wall in hole, the excavation pit between two rows of steel-pipe piles 1, when excavation to depth is 1800mm, in phase
To two steel-pipe piles 1 on welding bracing frame 4, weld waist between two opposite steel-pipe piles 1 and opposite two supporting racks 4
Beam 2, the distance between adjacent two waist rails 2 are set as 8000mm, by waist rail 2 and supporting rack 4 positioned at two of foundation pit
The fence suspension device of side wall connects, and forms inner frame suspension device, then excavation pit, the depth of foundation pit is made to be set as
8000mm is put into piping lane component 8 in foundation pit, and the Cast-in-situ Piles in Sand-filling boulder bed 9 on piping lane component 8, the depth of sand pebble layer is set as
500mm fills and leads up silty clay on sand pebble layer 9.
The present invention has the following characteristics：
1, due to devising fence suspension device and connection lever apparatus, foundation pit side-wall is vertically isolated by fence suspension device and is added
Gu by connecting lever apparatus rising on foundation pit outside two fence supportings, the support reinforcement before excavation of foundation pit is realized, is no longer made
The foundation pit side-wall after excavation is reinforced with anchor pole and anchor cable, therefore is met in the confined space of city and complex foundation
Geological state carries out the needs of excavation of foundation pit, improves security performance.
2, it due to devising steel-pipe pile 1 and Guan Liang 7, is vertically intervened, is improved to foundation pit side-wall in foundation pit side-wall
It reinforces.
3, due to devising waist rail 2 and supporting rack 4, by supporting rack 4, the company of connection lever apparatus and fence supporting is improved
Connect intensity.
4, the efficiency that steel-pipe pile 1 slips into hole is improved by pile cover 5 due to devising pile cover 5 and linked network spray sheath 6,
Sheath 6 is sprayed by linked network, surface supporting and reinforcing are carried out to foundation pit side-wall.
5, the restriction of numberical range has been carried out to planform due to devising, it is the technical side of the present invention to make numberical range
Technical characteristic in case is not to be calculated by formula or test the technical characteristic obtained by limited number of time, experiments have shown that the numerical value
The technical characteristic of range achieves good technique effect.
6, due to devising the technical characteristic of the present invention, in the effect of the independent and mutual set of technical characteristic,
By experiments have shown that, property indices of the invention be existing property indices be at least 1.7 times, pass through assess tool
There is good market value.
It is also other to carry out the fence suspension device of support reinforcement with formation inner frame and connect the skill of lever apparatus connection
Art feature is all one of the embodiment of the present invention, and each technical characteristic of embodiment described above can carry out arbitrary group
It closes, to meet Patent Law, patent regulation and the requirement of guidelines for examination, no longer to each technical characteristic in above-described embodiment
The embodiment of all possible combination is all described.
Above-described embodiment is a kind of realization shape of the deep pit support protection unit provided by the present invention for stake support structure
Formula increases according to other deformations of scheme provided by the present invention and either reduces composition therein or step or will be of the invention
For other technical fields close with the present invention, all belong to the scope of protection of the present invention.
Claims (10)
1. a kind of deep pit support protection unit for stake support structure, it is characterized in that：It include the fence being arranged on foundation pit side-wall
Suspension device is arranged between two fence supportings and across the connection lever apparatus of foundation pit.
2. a kind of deep pit support protection unit for stake support structure, it is characterized in that：Support reinforcement is carried out according to inner frame is formed
Mode is coupled to each other the fence suspension device for side shield with the connection lever apparatus being used to support.
3. the deep pit support protection unit according to claim 1 for stake support structure, it is characterized in that：Fence suspension device and
Connection lever apparatus is respectively set to form dismountable frame by prefabricated component.
4. the deep pit support protection unit according to claim 1 for stake support structure, it is characterized in that：It also include pile cover
(5) and linked network spray sheath (6), fence supporting are set as including steel-pipe pile (1) and Guan Liang (7), and connection lever apparatus is set as wrapping
Containing waist rail (2) and supporting rack (4),
The bottom terminal ends of steel-pipe pile (1) are arranged in foundation pit ground and the top end of steel-pipe pile (1) are provided with pile cover
(5), it is provided with waist rail (2) between two opposite steel-pipe piles (1) and is provided with supporting rack (4), waist on steel-pipe pile (1)
Beam (2) is arranged on supporting rack (4) and Guan Liang (7) is set as being serially connected on pile cover (5), and extension is provided on the side wall of foundation pit
Net spray sheath (6).
5. the deep pit support protection unit according to claim 4 for stake support structure, it is characterized in that：Steel-pipe pile (1), waist rail
(2), supporting rack (4), pile cover (5) and Guan Liang (7) are set as prefabricated component.
6. the deep pit support protection unit according to claim 4 for stake support structure, it is characterized in that：Steel-pipe pile (1) is arranged
It is set as the side compartment distribution along foundation pit for circular cylindrical shape body and steel-pipe pile (1),
Or, waist rail (2) is set as including interconnecting piece (21) and support portion (22) and divide in the both ends end of support portion (22)
It is not provided with interconnecting piece (21), support portion (22) is set as column and interconnecting piece (21) is set as I-shaped rhabodoid, even
The end face portion of socket part (21) is set as coupling with steel-pipe pile (1) and support portion (22) is arranged on supporting rack (4), waist rail (2)
Be set as along foundation pit side compartment arranged distribution and adjacent the distance between two waist rails (2) be set as 7500-
8500mm,
Or, supporting rack (4) be set as cross bar (41) and brace (42) and cross bar (41) outer end end and brace (42) it is outer
End end is respectively set to couple with steel-pipe pile (1), the angle between the center line and the center line of brace (42) of cross bar (41)
The angle being set as between 45 ° and the inclined-plane and the center line of brace (42) of the outer end end of brace (42) is set as 45 °, waist
Beam (2) is set as coupling with cross bar (41) contact,
Or, Guan Liang (7) is set as U-shaped channel-shaped body and Guan Liang (7) is set as extending distribution along through steel-pipe pile (1).
7. the deep pit support protection unit according to claim 4 for stake support structure, it is characterized in that：Pile cover (5) is set as
Include that plate portion (51), stage portion (52) and plug division (53) and plate portion (51) and plug division (53) are separately positioned on stage portion
(52) both ends end, plate portion (51) is set as plates and stage portion (52) and plug division (53) are respectively set to shaft-like
Body, stage portion (52) and plug division (53) are set as being arranged in steel-pipe pile in the distribution of step arrangement mode and plug division (53)
(1) in, Guan Liang (7) is arranged in plate portion (51),
Or, linked network spray sheath (6) is set as including civil grille, cement sand bed and waterproof roll layer and civil grille is set
It is set on the side wall for being attached to foundation pit, cement sand bed is set as being attached on civil grille and waterproof roll layer is set as pasting
It is attached on cement sand bed.
8. the deep pit support protection unit according to claim 4 for stake support structure, it is characterized in that：Steel-pipe pile (1) and hat
Beam (7) is set as being distributed in the way of forming fence supporting and steel-pipe pile (1) is set as with waist rail (2) and supporting rack (4)
It is distributed in the way of forming inner frame supporting, the center line setting of the center line and pile cover (5) of steel-pipe pile (1) is straight in same
On line.
9. a kind of construction method of deep basal pit for stake support structure, step are：In corridor, grid are installed on the periphery of the side of foundation pit
Column suspension device installs inner frame suspension device in foundation pit, continues to excavate to foundation pit with the excavation of foundation pit.
10. the construction method of the deep basal pit according to claim 9 for stake support structure, it is characterized in that：Its step is：Make
With down-the-hole drill, stake holes is formed on the periphery of the side of foundation pit, the diameter of stake holes is set as 144-148mm, adjacent two stakes
The distance between hole is set as 550-650mm, using air compressor machine and down-hole hammer, steel-pipe pile (1) is driven into stake holes, steel-pipe pile
(1) length is set as 10000-11000mm, and the steel-pipe pile (1) of one side is linked together by Guan Liang (7), is formed and is used
In the fence suspension device of the side wall of the deep basal pit of stake support structure, the excavation pit between two rows of steel-pipe piles (1) arrives deeply when excavating
When degree is 1700-1900mm, the welding bracing frame (4) on two opposite steel-pipe piles (1), in two opposite steel-pipe piles (1)
Waist rail (2) is welded between two opposite supporting racks (4), the distance between adjacent two waist rails (2) are set as 7500-
8500mm connects the fence suspension device of the two side walls positioned at foundation pit with supporting rack (4) by waist rail (2), forms in-seam
Frame suspension device, then excavation pit make the depth of foundation pit be set as 7900-8100mm, and piping lane component (8) is put into foundation pit,
Cast-in-situ Piles in Sand-filling boulder bed (9), the depth of sand pebble layer are set as 480-520mm on piping lane component (8), on sand pebble layer (9)
Fill and lead up silty clay.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110397041A (en) * | 2019-07-09 | 2019-11-01 | 珠海格力市政工程有限公司 | A kind of foundation pit support construction and the construction method based on this structure |
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| KR20170005991A (en) * | 2015-07-07 | 2017-01-17 | 김형민 | soil retaining wall using PHC pile and its construction method |
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| CN208701692U (en) * | 2018-05-11 | 2019-04-05 | 泰安市岱宗机电科技开发有限公司 | The suspension device of interim deep basal pit for stake support structure |
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| CN2214959Y (en) * | 1995-04-10 | 1995-12-13 | 第三航务工程局第一工程公司 | Sliding sleeve piling device |
| CN203905012U (en) * | 2014-04-14 | 2014-10-29 | 天津路桥建设工程有限公司 | Reinforcing mesh foundation support system |
| CN204780865U (en) * | 2015-07-06 | 2015-11-18 | 建华建材投资有限公司 | Precast concrete pile cap |
| KR20170005991A (en) * | 2015-07-07 | 2017-01-17 | 김형민 | soil retaining wall using PHC pile and its construction method |
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| CN110397041A (en) * | 2019-07-09 | 2019-11-01 | 珠海格力市政工程有限公司 | A kind of foundation pit support construction and the construction method based on this structure |
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