CN107882042A - Supporting construction and its construction method are supportted before a kind of bellows - Google Patents
Supporting construction and its construction method are supportted before a kind of bellows Download PDFInfo
- Publication number
- CN107882042A CN107882042A CN201711443576.5A CN201711443576A CN107882042A CN 107882042 A CN107882042 A CN 107882042A CN 201711443576 A CN201711443576 A CN 201711443576A CN 107882042 A CN107882042 A CN 107882042A
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- China
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- shaped steel
- utricule
- construction
- bellows
- rotary churning
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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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses supporting construction and its construction method are supportted before a kind of bellows, including support system and by the advanced support in " H " shaped steel insertion rotary churning pile, it is characterized in that " H " shaped steel one end is provided with the utricule that seal assembly is fixed, after utricule inserts the projected depth of rotary churning pile in the lump with " H " shaped steel, and cement mortar is filled in utricule, so that supportted on rotary churning pile before the bellows of formation cement bag, the seal assembly is arranged on utricule both ends and being fixedly connected for sealing with " H " shaped steel, and Specific construction includes：The steps such as making, installation and the placement and utricule slip casting of bellows shoe tree.The present invention has the contact area of increase support end and the soil body compared with prior art, support displacement before can effectively limiting, and ensures the stability of supporting construction, supporting effect is good, the surrounding enviroment that are particularly suitable for use in are complicated, and existing building is more, the excavating sideline foundation pit supporting project construction nearer apart from red line.
Description
Technical field
The present invention relates to foundation pit enclosure technical field, especially a kind of special formations such as muddy soft soil, sand that are used for increase
Add support end with supportting supporting construction and its construction method before the bellows of soil body contact area.
Background technology
With urban construction and the continuous development of Transport Facility Construction, increasing project needs pattern foundation pit supporting structure to ensure
The safety of hypogee construction, and the depth of excavation of foundation pit is also increasingly deeper, surrounding enviroment also become increasingly complex, in order to for building
The peak use rate on ground, leaves that the place usable floor area of pattern foundation pit supporting structure is also fewer and fewer for, to the security of foundation ditch also more and more higher.
At present, the support forms such as slope, soil cement gravity dam or the double-row pile that foundation ditch uses, the area of occupancy is larger, and
Foundation ditch is compared with depth and leaves the less foundation ditch of place usable floor area of pattern foundation pit supporting structure for, typically all uses the branch of board-like supporting+inner support
Protection structure, inner support generally throws the form of support using horizontal support or tiltedly, but horizontal support cost is higher, difficulty of being unearthed, tiltedly throws
Support influences construction of bottom plates.
The supporting construction of prior art is difficult to construct in special formations such as muddy soft soil, sands, support position before easily causing
Move, less stable.
The content of the invention
Supporting construction and its construction are supportted before a kind of bellows that the purpose of the present invention is in view of the shortcomings of the prior art and designed
Method, expand the preceding support of body structure using bellows, to increase the contact area of support end and the soil body, support displacement before can effectively limiting,
Ensure the stability of supporting construction, supporting effect is good, can fully save the underground space, increase economic efficiency, be particularly suitable for use in week
Surrounding environment is complicated, and existing building is more, the excavating sideline foundation pit supporting project construction nearer apart from red line.
The object of the present invention is achieved like this：Support supporting construction before a kind of bellows, including support system and by " H " type
Advanced support in steel insertion rotary churning pile, advanced support to be set in the oblique foundation ditch of 30~45° angle degree, and " H " shaped steel one end with
The Guan Liang connection being arranged at the top of support system, other end insertion are arranged on the rotary churning pile under bottom plate, are characterized in " H " shaped steel one
End is provided with the utricule that seal assembly is fixed, and utricule inserts rotary churning pile in the lump with " H " shaped steel, and cement bag is formed on rotary churning pile
Supportted before bellows, the seal assembly is arranged on utricule both ends and being fixedly connected for sealing with " H " shaped steel.
The bottom plate is connected provided with load transfering strip with support system.
The bottom plate of " H " shaped steel and basement or exterior wall intersection are provided with sealing steel disc.
The construction method of supporting construction is supportted before a kind of bellows, is characterized in provided with seal assembly consolidating using " H " shaped steel one end
Fixed utricule, after utricule inserts the projected depth of rotary churning pile in the lump with " H " shaped steel, and cement mortar is filled in utricule so that rotation
Supportted before the bellows of cement bag are formed in spray stake, Specific construction is carried out in the steps below：
A, the construction of rotary churning pile
Vertical board-like support system and slot grooving Guan Liang is set along excavation of foundation pit sideline, is then excavated to Guan Liang top mark
Height, carry out hole bottom and all hydraulic caterpillar drilling machine construction is used with the jet grouting pile construction of lower portion, the rotary churning pile, its footpath is
800mm, angle of inclination are 30~45 °.
B, the making and installation of bellows shoe tree
Preceding support main body by " H profile steel and utricule forms, the utricule using canvas material making, its both ends by seal assembly and
" H " shaped steel termination is integrally fixed, while Grouting Pipe is inserted in utricule and is fixed together with H " shaped steel.
C, bellows shoe tree is laid
" H " shaped steel one end provided with utricule is inserted by rotary churning pile using lash method, need to be used when " H " shaped steel inserts rotary churning pile oblique
Positioned to bracket as angle, the model and insertion depth of " H " shaped steel determine according to stressing conditions.
D, utricule slip casting
After the projected depth of bellows shoe tree insertion rotary churning pile, cement will be filled in utricule by Grouting Pipe using grouting pump
Slurry, make on rotary churning pile formed balloon inflation extruding expanding body cement bag be bellows before support.
E, sealing is set
The bottom plate and exterior wall and load transfering strip of construction basement, and water-stopping steel is set in " H " shaped steel and bottom plate and exterior wall intersection
Piece.
F, support is removed
After bottom plate and load transfering strip reach design strength, the support of oblique bracket is removed, or treats that the top board construction of basement is complete, with
And between exterior wall and board-like supporting after backfill, cut off to construct after " H " shaped steel in basement and terminate.
The present invention has the contact area of increase support end and the soil body compared with prior art, support displacement effectively before limitation,
Ensure the stability of supporting construction, supporting effect is good, can fully save the underground space, increase economic efficiency, be particularly suitable for use in week
Surrounding environment is complicated, and existing building is more, the excavating sideline foundation pit supporting project construction nearer apart from red line.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2~Fig. 3 is figure of the embodiment of the present invention；
Fig. 4 is utricule and " H " shaped steel scheme of installation；
Fig. 5 is Grouting Pipe and " H " shaped steel scheme of installation；
Fig. 6 is bellows shoe tree structural representation.
Embodiment
Refering to accompanying drawing 1, the present invention includes support system 1 and inserts in rotary churning pile 2 the advanced branch formed by " H " shaped steel 3
Support, is supported to be set in the oblique foundation ditch of 30~45° angle degree in advance, and described one end of " H " shaped steel 3 is with being arranged on the top of support system 1
Guan Liang 4 connect, other end insertion is arranged on rotary churning pile 2 under bottom plate 6；Described one end of " H " shaped steel 3 is solid provided with seal assembly 10
Fixed utricule 8, after utricule 8 inserts the projected depth of rotary churning pile 2 in the lump with " H " shaped steel 3, and cement mortar is filled in utricule 8, made
Supportted before obtaining the bellows that cement bag 11 is formed on rotary churning pile 2；The seal assembly 10 is arranged on the both ends of utricule 8 and with " H " shaped steel 3
Sealing is fixedly connected；The bottom plate 6 is connected provided with load transfering strip 7 with slab supporting system 1；The bottom of " H " shaped steel 3 and basement
Plate 6 or the intersection of exterior wall 16 are provided with sealing steel disc 5.
Make further to retouch in detail with preceding support supporting of the embodiment of a certain foundation pit enclosure to the present invention and construction method below
State and illustrate：
Embodiment 1
Refering to accompanying drawing 2, construction procedure a of the invention, the construction of rotary churning pile：Board-like prop is set along excavation of foundation pit sideline
It is 1 and slot grooving Guan Liang 4, and cheats bottom and constructed with the rotary churning pile 2 of lower portion, then carries out the bottom plate 6 and exterior wall of basement
16 and the construction of load transfering strip 7, the rotary churning pile 2 uses all hydraulic caterpillar drilling machine construction, and its footpath is 800mm, inclination angle
Spend for 30~45 °.
Refering to 4~Fig. 5 of accompanying drawing, step b of the invention, the making and installation of bellows shoe tree：Preceding support main body is by " H profile steel 3
Formed with utricule 8, the utricule 8 is made using canvas material, and its both ends is fixed into by seal assembly 10 and the termination of " H " shaped steel 3
One, while Grouting Pipe 9 is inserted in utricule 8 and is fixed together with H " shaped steel 3.
Refering to accompanying drawing 6, step c and step d of the invention, bellows shoe tree and utricule slip casting are laid：Will using lash method
After the projected depth of the one end of " H " shaped steel 3 insertion rotary churning pile 2 provided with utricule 8, using grouting pump by Grouting Pipe 9 by utricule 8
Fill cement mortar so that the cement bag 11 of balloon inflation extruding expanding body is formed on rotary churning pile 2 to be supportted before bellows, the insertion rotation of " H " shaped steel 3
Oblique bracket need to be used to be positioned as angle when spraying stake 2.
Refering to accompanying drawing 3, step e and step f of the invention, sealing set and removed support：In " H " shaped steel 3 and bottom plate 6 and
The intersection of exterior wall 16 sets sealing steel disc 5, after bottom plate 6 and load transfering strip 7 reach design strength, removes the support of oblique bracket,
Or treat that the top board construction of basement is complete, between the exterior wall 16 of basement and board-like supporting after backfill, cut off " H " in basement
Construction terminates after shaped steel 3；The model and insertion depth of " H " shaped steel 3 determine according to stressing conditions.
Simply the present invention is further illustrated above, and is not used to limit this patent, and all is equivalence enforcement of the present invention,
It is intended to be limited solely by within the right of this patent.
Claims (4)
1. support supporting construction before a kind of bellows, including support system and rotary churning pile is inserted by " H " shaped steel（2）Interior advanced branch
Support, advanced support in the oblique foundation ditch of 30~45° angle degree to set, and " H " shaped steel one end and the hat that is arranged at the top of support system
Beam connects, and other end insertion is arranged on the rotary churning pile under bottom plate, it is characterised in that " H " shaped steel one end is provided with what seal assembly was fixed
Utricule, utricule inserts rotary churning pile in the lump with " H " shaped steel, and is supportted on rotary churning pile before the bellows of formation cement bag, the sealing group
Part is arranged on utricule both ends and being fixedly connected for sealing with " H " shaped steel.
2. support supporting construction before bellows according to claim 1, it is characterised in that the bottom plate is provided with load transfering strip and prop
System's connection.
3. support supporting construction before bellows according to claim 1 or claim 2, it is characterised in that the bottom of " H " shaped steel and basement
Plate or exterior wall intersection are provided with sealing steel disc.
4. the construction method of supporting construction is supportted before bellows described in a kind of claim 1, it is characterised in that set using " H " shaped steel one end
After thering is the utricule that seal assembly is fixed, utricule to insert the projected depth of rotary churning pile in the lump with " H " shaped steel, and water is filled in utricule
Mud so that supportted before the bellows of cement bag are formed on rotary churning pile, Specific construction is carried out in the steps below：
A, the construction of rotary churning pile
Vertical support system and slot grooving Guan Liang are set along excavation of foundation pit sideline, Guan Liang top mark height is then excavated to, enters
Row hole bottom is with the jet grouting pile construction of lower portion, and the rotary churning pile uses all hydraulic caterpillar drilling machine construction, and its footpath is 800mm,
Angle of inclination is 30~45 °；
B, the making and installation of bellows shoe tree
Preceding support main body is by " H profile steel and utricule are formed, and the utricule is made using canvas material, and its both ends is by seal assembly and " H "
Shaped steel termination is integrally fixed, while Grouting Pipe is inserted in utricule and is fixed together with H " shaped steel；
C, bellows shoe tree is laid
" H " shaped steel one end provided with utricule is inserted by rotary churning pile using lash method, " H " shaped steel need to use oblique when inserting rotary churning pile
Bracket positions as angle, and the model and insertion depth of " H " shaped steel determine according to stressing conditions；
D, utricule slip casting
After the projected depth of bellows shoe tree insertion rotary churning pile, cement will be filled in utricule by Grouting Pipe using grouting pump
Slurry, make on rotary churning pile formed balloon inflation extruding expanding body cement bag be bellows before support；
E, sealing is set
The bottom plate and exterior wall and load transfering strip of construction basement, and water-stopping steel is set in " H " shaped steel and bottom plate and exterior wall intersection
Piece；
F, support is removed
After bottom plate and load transfering strip reach design strength, the support of oblique bracket is removed, or treats that the top board construction of basement is complete, with
And between exterior wall and board-like supporting after backfill, cut off to construct after " H " shaped steel in basement and terminate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711443576.5A CN107882042A (en) | 2017-12-27 | 2017-12-27 | Supporting construction and its construction method are supportted before a kind of bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711443576.5A CN107882042A (en) | 2017-12-27 | 2017-12-27 | Supporting construction and its construction method are supportted before a kind of bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107882042A true CN107882042A (en) | 2018-04-06 |
Family
ID=61772562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711443576.5A Pending CN107882042A (en) | 2017-12-27 | 2017-12-27 | Supporting construction and its construction method are supportted before a kind of bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107882042A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951646A (en) * | 2018-07-18 | 2018-12-07 | 江苏东合南岩土科技股份有限公司 | Pit Bracing in Soft Soil structure and construction method |
| CN109083128A (en) * | 2018-09-10 | 2018-12-25 | 浙江吉通地空建筑科技有限公司 | Fashioned iron column assembled underground continuous wall with high-bearing capacity |
| CN112127373A (en) * | 2020-10-16 | 2020-12-25 | 中建四局第六建设有限公司 | Deep foundation pit pile-support integrated supporting system structure and segmented accurate grouting construction technology |
| CN112761166A (en) * | 2021-02-23 | 2021-05-07 | 广东科能工程管理有限公司 | Construction method for shallow foundation pit of combined support of piles and pre-grouting steel pipes based on SMW (soil mixing wall) construction method |
| CN116876529A (en) * | 2023-09-08 | 2023-10-13 | 中建交通建设集团有限公司 | Central type supporting system for deep and large foundation pit and construction method of central type supporting system |
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| CN101864773A (en) * | 2010-04-14 | 2010-10-20 | 江苏江中集团有限公司 | Deep foundation pit support process |
| CN101929163A (en) * | 2009-12-17 | 2010-12-29 | 浙江中联建设集团有限公司 | Support construction process of lotus root-shaped segmental expanded soil anchor rod |
| CN205348195U (en) * | 2016-01-11 | 2016-06-29 | 浙江宝业建设集团有限公司 | Anchor rope spouts supporting construction that anchor double row pile was drawn in stake soon |
| CN206768832U (en) * | 2017-01-05 | 2017-12-19 | 上海城地建设股份有限公司 | Support, anchor cable post-tensioning H type component building enclosures before a kind of steel pipe |
| CN207700197U (en) * | 2017-12-27 | 2018-08-07 | 上海智平基础工程有限公司 | Supporting construction is supportted before a kind of bellows |
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| CN101148877A (en) * | 2007-10-16 | 2008-03-26 | 中国京冶工程技术有限公司 | Multistage bag-type compression anchor bar |
| CN101929163A (en) * | 2009-12-17 | 2010-12-29 | 浙江中联建设集团有限公司 | Support construction process of lotus root-shaped segmental expanded soil anchor rod |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951646A (en) * | 2018-07-18 | 2018-12-07 | 江苏东合南岩土科技股份有限公司 | Pit Bracing in Soft Soil structure and construction method |
| CN109083128A (en) * | 2018-09-10 | 2018-12-25 | 浙江吉通地空建筑科技有限公司 | Fashioned iron column assembled underground continuous wall with high-bearing capacity |
| CN112127373A (en) * | 2020-10-16 | 2020-12-25 | 中建四局第六建设有限公司 | Deep foundation pit pile-support integrated supporting system structure and segmented accurate grouting construction technology |
| CN112761166A (en) * | 2021-02-23 | 2021-05-07 | 广东科能工程管理有限公司 | Construction method for shallow foundation pit of combined support of piles and pre-grouting steel pipes based on SMW (soil mixing wall) construction method |
| CN116876529A (en) * | 2023-09-08 | 2023-10-13 | 中建交通建设集团有限公司 | Central type supporting system for deep and large foundation pit and construction method of central type supporting system |
| CN116876529B (en) * | 2023-09-08 | 2023-12-15 | 中建交通建设集团有限公司 | Construction method of central type supporting system for deep and large foundation pit |
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