CN203256751U - Deep foundation pit supporting structure for soft soil foundation - Google Patents
Deep foundation pit supporting structure for soft soil foundation Download PDFInfo
- Publication number
- CN203256751U CN203256751U CN 201320283237 CN201320283237U CN203256751U CN 203256751 U CN203256751 U CN 203256751U CN 201320283237 CN201320283237 CN 201320283237 CN 201320283237 U CN201320283237 U CN 201320283237U CN 203256751 U CN203256751 U CN 203256751U
- Authority
- CN
- China
- Prior art keywords
- pile
- supporting
- fender pile
- branch fender
- protection structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a deep foundation pit supporting structure for a soft soil foundation. The deep foundation pit supporting structure comprises a row of outer side supporting piles and a row of inner side supporting piles, wherein the tops of the outer side supporting piles and the inner side supporting piles are connected by crown beams respectively; the elevation of the crown beam at the top of each inner side supporting pile is less than the elevation of the crown beam at the top of each outer side supporting pile; the outer side supporting piles and the inner side supporting piles are mutually connected via surrounding purlins and coupling beams. The two rows of the inner side supporting piles and the outer side supporting piles are adopted, the pile tops are connected by the crown beams respectively, so as to form a cantilever-type unequal-height double-row supporting pile structure which is good in integrality, and capable of effectively guaranteeing the strength of the supporting structure and improving safety; the horizontal displacement of the top of the foundation pit is less than the horizontal displacements of similar supporting structures; moreover, the addition of a concrete horizontal support at a corner is avoided, the working procedures of detaching and supporting during subsequent earth excavation are reduced, and cost is saved. Via multi-head cement mixing piles, a soil body in a specified passive area is reinforced and the pressure-bearing capacity of passive soil is improved, and the lengths of the row of piles are reduced. The whole construction process is simple in construction process, convenient and practicable.
Description
Technical field
The utility model relates to a kind of deep foundation pit supporting structure, relates in particular to a kind of structure for supporting deep foundation pit of soft soil foundation.
Background technology
In recent years; city infrastructure scale strengthens gradually; the extensive investment construction general mood such as large quantities of industry, civilian construction like surging clouds; part basis is arranged in soft clay area; cutting depth is darker; area is large, the excessive phenomenon of space enclosing structure distortion usually can occur at the deep-foundation pit engineering of soft clay area in the soil excavation process.Foundation pit system main three reasons of general reason that lost efficacy cause: the one, and because causing support system unstability (little such as monolithic stability, overturning or slip resistance analysis, anti-protuberance safety, supporting and protection structure intensity, insufficient rigidity destruction etc.), inherent design unreasonable factor causes instability of foundation pit; The 2nd, because changing (infiltrating such as thunderstorm weather, overload, water), external environment causes instability of foundation pit; The 3rd because construction factor (as the support construction quality do not reach designing requirement, unreasonable, the shoveling disturbance supporting and protection structure of cutting the earth etc.) instability of foundation pit that causes.Therefore be necessary to propose a kind of new supporting and protection structure for deep foundation ditch in the soft foundation, the intensity of effective guarantee supporting and protection structure provides better quality, safer guarantee to deep foundation ditch.
The utility model content
Technical problem to be solved in the utility model provides a kind of structure for supporting deep foundation pit of soft soil foundation simple, that safety is easily gone of constructing.
For realizing above-mentioned technique effect, the utility model discloses a kind of structure for supporting deep foundation pit of soft soil foundation, comprise an exclusive side soldier pile and row's medial branch fender pile, described lateral branch fender pile be connected the stake top of medial branch fender pile and connect with Guan Liang respectively, described medial branch fender pile stake apical cap beam absolute altitude is less than described lateral branch fender pile stake apical cap beam absolute altitude, and between described lateral branch fender pile and the described medial branch fender pile by enclosing purlin and coupling beam interconnects.
The utility model further improves and is that described lateral branch fender pile stake apical cap beam absolute altitude equals the nature ground level, and described medial branch fender pile stake apical cap beam absolute altitude is less than described lateral branch fender pile stake apical cap beam absolute altitude 4.5m.
The utility model further improves and is, is being respectively equipped with water-stop curtain between described lateral branch fender pile and the described medial branch fender pile and between the stake of described medial branch fender pile.
The utility model further improves and is that described water-stop curtain adopts the dual-pipe high-pressure rotary churning pile.
The utility model further improves and is, described lateral branch fender pile adopts diameter 1000mm, spacing 1500mm bored pile, and described medial branch fender pile adopts diameter 1500mm, the bored pile of spacing 1800mm.
The utility model further improves and is, described Guan Liang, describedly encloses purlin and described coupling beam is reinforced concrete structure.
The utility model further improves and is that the array pitch between described lateral branch fender pile and the described medial branch fender pile is 3600mm.
The utility model further improves and is, the passive area soil body employing bull agitation pile of described supporting and protection structure is reinforced.
The utility model further improves and is, the width of described stabilization of soil in passive area is 12m, the diameter of described bull agitation pile is 500mm, spacing 400mm, described bull agitation pile is long apart from the interior stake of described medial branch fender pile 6m scope to be 6m, and long apart from the interior stake of described medial branch fender pile 6m-12m scope is 3m.
The utility model is owing to adopted above technical scheme, make it have following beneficial effect to be: the outside two row's soldier piles in adopting, the stake top connects with Guan Liang respectively, consists of the not contour double supporting pile structure of cantilevered, good integrity, the intensity of effective guarantee supporting and protection structure, improve safety, the horizontal movement of foundation ditch top is less than similar supporting and protection structure, and avoided the corner to increase concrete horizontal and supported, reduce the operation of the dismounting support of follow-up soil excavation, saved cost.To specifying stabilization of soil in passive area and improving by the bearing capacity of breaking ground, the stake that reduces campshed is long by the bull cement mixing pile.Whole work progress construction technology is simple, convenient and easy.
Description of drawings
Fig. 1 is the part plan schematic diagram of the utility model structure for supporting deep foundation pit of soft soil foundation.
Fig. 2 is the structure sectional view of the utility model structure for supporting deep foundation pit of soft soil foundation.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
See also illustrated in figures 1 and 2, structure for supporting deep foundation pit of soft soil foundation 1 of the present utility model mainly is made of an exclusive side soldier pile 11 and row's medial branch fender pile 12, lateral branch fender pile 11 adopts diameter 1000mm, spacing 1500mm bored pile, concrete strength grade is C30, main muscle adopts hot rolling-HRB400 reinforcing bar, main muscle spreading point must weld, main muscle spreading point must stagger in the same cross section, 11 very useful hat beams 13 of lateral branch fender pile connect, and hat beam 13 absolute altitudes equal the nature ground level, and the outside of lateral branch fender pile 11 is directly as builder's road and processing place like this, constructability has solved the problem of narrow field.Medial branch fender pile 12 adopts diameter 1500mm, the bored pile of spacing 1800mm, arrangement of reinforcement is with lateral branch fender pile 11, the very useful hat beam 13 of stake connects, 12 apical cap beam 13 absolute altitudes of medial branch fender pile are less than 11 high 4.5m of apical cap beam 13 top marks of lateral branch fender pile, medial branch fender pile 12 had both been saved cost with respect to the contour double soldier pile of routine like this, can satisfy again the requirement of foundation ditch safety.Hat beam 13 concrete strength grade are C30, and main muscle adopts hot rolling-elongated setting of HRB400 reinforcing bar.Array pitch between lateral branch fender pile 11 and the medial branch fender pile 12 is 3600mm, middle forms the double soldier pile system of cantilevered by enclosing purlin 14 and coupling beam 15 interconnects, and hat beam 13, encloses purlin 14 and coupling beam 15 is reinforced concrete structure.With respect to single cantilever retaining structure, single cantilever retaining structure relies on the enough degree of depth that embed in the subsoil of hole to bear the lateral pressure after the stake fully and keeps its stability, and hole top displacement and pile body itself are out of shape larger.Double supporting and protection structure reason rigidity Guan Liang and inside and outside campshed form a space statically-indeterminate structure, integral rigidity is very large, add that inside and outside campshed forms and the reason of the couple of lateral pressure acting in opposition, the displacement of Retaining Structure with Double-row Piles is obviously reduced, the internal force of pile body descends to some extent simultaneously, can supporting not need to arrange inner support than the single darker foundation ditch of stake, can use the stake than the paxilla footpath to replace larger-diameter stake in the single stake, reduce cost, satisfy the foundation ditch safety requirements.
In Deep Thick Soft Ground Area, natural moisture content is large, void ratio is large because weak soil has, in order to prevent in the Groundwater infiltration foundation ditch, setting up water-stop curtain 16 between outside soldier pile 11 and the medial branch fender pile 12 and between 12 of medial branch fender piles, water-stop curtain 16 adopts the dual-pipe high-pressure rotary churning pile, it is good that the dual-pipe high-pressure rotary churning pile has a stagnant water effect, the fast characteristics of constructing.
In the very soft area of soil property, because passive area 18 soil pressures are not enough, to the campshed space enclosing structure, very large insertion depth must be arranged, just can guarantee the stability of space enclosing structure.So usually improve reinforcing to cheating the interior soil body, to improve passive soil resistance, for soldier pile provides preferably build-in layer, and long the reducing of stake of campshed, save cost.
Below embodiment has been described in detail the utility model by reference to the accompanying drawings, and those skilled in the art can make the many variations example to the utility model according to the above description.Thereby some details among the embodiment should not consist of restriction of the present utility model, and the scope that the utility model will define with appended claims is as protection domain of the present utility model.
Claims (9)
1. structure for supporting deep foundation pit of soft soil foundation, it is characterized in that: described supporting and protection structure comprises an exclusive side soldier pile and row's medial branch fender pile, described lateral branch fender pile be connected the stake top of medial branch fender pile and connect with Guan Liang respectively, described medial branch fender pile stake apical cap beam absolute altitude is less than described lateral branch fender pile stake apical cap beam absolute altitude, and between described lateral branch fender pile and the described medial branch fender pile by enclosing purlin and coupling beam interconnects.
2. supporting and protection structure as claimed in claim 1, it is characterized in that: described lateral branch fender pile stake apical cap beam absolute altitude equals the nature ground level, and described medial branch fender pile stake apical cap beam absolute altitude is less than described lateral branch fender pile stake apical cap beam absolute altitude 4.5m.
3. supporting and protection structure as claimed in claim 2 is characterized in that: be respectively equipped with water-stop curtain between described lateral branch fender pile and the described medial branch fender pile and between the stake of described medial branch fender pile.
4. supporting and protection structure as described in claim 3, it is characterized in that: described water-stop curtain adopts the dual-pipe high-pressure rotary churning pile.
5. supporting and protection structure as claimed in claim 4 is characterized in that: described lateral branch fender pile employing diameter 1000mm, spacing 1500mm bored pile, described medial branch fender pile employing diameter 1500mm, the bored pile of spacing 1800mm.
6. supporting and protection structure as claimed in claim 5 is characterized in that: described Guan Liang, describedly enclose purlin and described coupling beam is reinforced concrete structure.
7. supporting and protection structure as claimed in claim 6, it is characterized in that: the array pitch between described lateral branch fender pile and the described medial branch fender pile is 3600mm.
8. supporting and protection structure as claimed in claim 7 is characterized in that: the passive area soil body to described supporting and protection structure adopts the bull agitation pile to reinforce.
9. supporting and protection structure as claimed in claim 8, it is characterized in that: the width of described stabilization of soil in passive area is 12m, the diameter of described bull agitation pile is 500mm, spacing 400mm, described bull agitation pile is long apart from the interior stake of described medial branch fender pile 6m scope to be 6m, and long apart from the interior stake of described medial branch fender pile 6m-12m scope is 3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320283237 CN203256751U (en) | 2013-05-22 | 2013-05-22 | Deep foundation pit supporting structure for soft soil foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320283237 CN203256751U (en) | 2013-05-22 | 2013-05-22 | Deep foundation pit supporting structure for soft soil foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203256751U true CN203256751U (en) | 2013-10-30 |
Family
ID=49469330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320283237 Expired - Fee Related CN203256751U (en) | 2013-05-22 | 2013-05-22 | Deep foundation pit supporting structure for soft soil foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203256751U (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669369A (en) * | 2013-12-23 | 2014-03-26 | 中国建筑第八工程局有限公司 | Supporting structure and supporting method for foundation pit |
| CN103774675A (en) * | 2014-01-24 | 2014-05-07 | 中国建筑股份有限公司 | Combined double-row-pile combined vertical prestress anchor rod supporting system and construction method thereof |
| CN104131566A (en) * | 2014-05-27 | 2014-11-05 | 中国建筑第四工程局有限公司 | Method for constructing basement foundation pit without horizontal braces |
| CN105089063A (en) * | 2015-08-28 | 2015-11-25 | 上海市政工程设计研究总院（集团）有限公司 | Lattice-shaped reinforcing structure used for pit bottom of foundation pit in soft soil area |
| CN105239581A (en) * | 2015-08-28 | 2016-01-13 | 上海市政工程设计研究总院（集团）有限公司 | Lattice-shaped strengthening method for bottom of foundation pit in soft soil area |
| CN105442615A (en) * | 2015-11-26 | 2016-03-30 | 中国建筑股份有限公司 | Inverted-Y-shaped supporting structure for foundation pit engineering and construction method of inverted-Y-shaped supporting structure |
| CN105696602A (en) * | 2016-03-17 | 2016-06-22 | 中南勘察设计院（湖北）有限责任公司 | Composite pile-anchor supporting method and structure for deepening excavation |
| CN105804086A (en) * | 2014-12-31 | 2016-07-27 | 上海建工二建集团有限公司 | Construction method for support change joints in foundation trench reverse building method construction |
| CN106149729A (en) * | 2015-03-07 | 2016-11-23 | 温州荣强海洋科技有限公司 | A kind of building foundation pit quaternity circular section interlocking pile supporting construction |
| CN106284370A (en) * | 2016-08-20 | 2017-01-04 | 东通岩土科技（杭州）有限公司 | Building inner support list column joist system |
| CN106480889A (en) * | 2016-11-14 | 2017-03-08 | 上海岩土工程勘察设计研究院有限公司 | A kind of Pile of Deep Foundation Pit method of reinforcement design |
| CN107059885A (en) * | 2017-05-23 | 2017-08-18 | 梁美欣 | Supporting construction |
| CN107677498A (en) * | 2017-11-02 | 2018-02-09 | 中国建筑第八工程局有限公司 | The simulation test device and method of the stake soil support combination supporting system mechanism of action |
| CN110468849A (en) * | 2019-08-28 | 2019-11-19 | 中冶集团武汉勘察研究院有限公司 | A kind of Mountainous Region City ultra-deep foundation pit inner support support system earth's surface height difference processing method |
| CN110952987A (en) * | 2019-12-03 | 2020-04-03 | 济南轨道交通集团有限公司 | Construction method for side-through bridge pile of stacked porous subway tunnel |
-
2013
- 2013-05-22 CN CN 201320283237 patent/CN203256751U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103669369B (en) * | 2013-12-23 | 2015-11-04 | 中国建筑第八工程局有限公司 | The supporting and protection structure of foundation ditch and supporting method |
| CN103669369A (en) * | 2013-12-23 | 2014-03-26 | 中国建筑第八工程局有限公司 | Supporting structure and supporting method for foundation pit |
| CN103774675A (en) * | 2014-01-24 | 2014-05-07 | 中国建筑股份有限公司 | Combined double-row-pile combined vertical prestress anchor rod supporting system and construction method thereof |
| CN103774675B (en) * | 2014-01-24 | 2015-06-24 | 中国建筑股份有限公司 | Combined double-row-pile combined vertical prestress anchor rod supporting system and construction method thereof |
| CN104131566A (en) * | 2014-05-27 | 2014-11-05 | 中国建筑第四工程局有限公司 | Method for constructing basement foundation pit without horizontal braces |
| CN104131566B (en) * | 2014-05-27 | 2016-08-24 | 中国建筑第四工程局有限公司 | A kind of basement is without the construction method of horizontal support foundation ditch |
| CN105804086A (en) * | 2014-12-31 | 2016-07-27 | 上海建工二建集团有限公司 | Construction method for support change joints in foundation trench reverse building method construction |
| CN106149729A (en) * | 2015-03-07 | 2016-11-23 | 温州荣强海洋科技有限公司 | A kind of building foundation pit quaternity circular section interlocking pile supporting construction |
| CN105089063A (en) * | 2015-08-28 | 2015-11-25 | 上海市政工程设计研究总院（集团）有限公司 | Lattice-shaped reinforcing structure used for pit bottom of foundation pit in soft soil area |
| CN105239581A (en) * | 2015-08-28 | 2016-01-13 | 上海市政工程设计研究总院（集团）有限公司 | Lattice-shaped strengthening method for bottom of foundation pit in soft soil area |
| CN105442615A (en) * | 2015-11-26 | 2016-03-30 | 中国建筑股份有限公司 | Inverted-Y-shaped supporting structure for foundation pit engineering and construction method of inverted-Y-shaped supporting structure |
| CN105696602A (en) * | 2016-03-17 | 2016-06-22 | 中南勘察设计院（湖北）有限责任公司 | Composite pile-anchor supporting method and structure for deepening excavation |
| CN106284370A (en) * | 2016-08-20 | 2017-01-04 | 东通岩土科技（杭州）有限公司 | Building inner support list column joist system |
| CN106284370B (en) * | 2016-08-20 | 2018-07-13 | 东通岩土科技（杭州）有限公司 | Build inner support list column joist system |
| CN106480889A (en) * | 2016-11-14 | 2017-03-08 | 上海岩土工程勘察设计研究院有限公司 | A kind of Pile of Deep Foundation Pit method of reinforcement design |
| CN107059885A (en) * | 2017-05-23 | 2017-08-18 | 梁美欣 | Supporting construction |
| CN107677498A (en) * | 2017-11-02 | 2018-02-09 | 中国建筑第八工程局有限公司 | The simulation test device and method of the stake soil support combination supporting system mechanism of action |
| CN107677498B (en) * | 2017-11-02 | 2023-10-03 | 中国建筑第八工程局有限公司 | Simulation test device and method for action mechanism of pile-soil-support combined support system |
| CN110468849A (en) * | 2019-08-28 | 2019-11-19 | 中冶集团武汉勘察研究院有限公司 | A kind of Mountainous Region City ultra-deep foundation pit inner support support system earth's surface height difference processing method |
| CN110468849B (en) * | 2019-08-28 | 2024-03-26 | 中冶集团武汉勘察研究院有限公司 | Method for treating surface height difference of support supporting system in ultra-deep foundation pit in mountain urban area |
| CN110952987A (en) * | 2019-12-03 | 2020-04-03 | 济南轨道交通集团有限公司 | Construction method for side-through bridge pile of stacked porous subway tunnel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203256751U (en) | Deep foundation pit supporting structure for soft soil foundation | |
| CN103074898B (en) | Multi-row pile foundation pit support structure and construction method thereof | |
| CN201598642U (en) | Double-row pile foundation pit support structure | |
| CN204311459U (en) | Oblique double soldier pile body structure before chair shape | |
| CN105155548B (en) | A kind of drag-line double-row pile (wall) supporting construction | |
| CN101408023A (en) | Method for supporting and protecting row pile pit | |
| CN102691302B (en) | Concrete structure for supporting deep foundation pit | |
| CN101565949A (en) | Forming method of large shallow foundation pit with soft soil foundation | |
| CN103498475B (en) | Foundation pit supporting structure for controlling existing building deformation and construction method for excavating foundation pit | |
| CN103821160A (en) | Soft soil foundation combined pile net structure | |
| CN106368219A (en) | Supporting reinforcing structure of deep foundation pit and construction method | |
| CN200946265Y (en) | Vertical tube type grating reinforced stone column | |
| CN203096745U (en) | Multi-row pile foundation pit supporting structure | |
| CN103243721B (en) | Highrise Building With Raft Foundation and Core Walls Structure excavation construction method under Unfavorable geology condition | |
| CN202273242U (en) | Base of union type mini type pile rod tower | |
| CN104594360A (en) | Composite double-row pile foundation pit supporting structure | |
| CN204780990U (en) | Combined type retaining wall structure | |
| CN204551430U (en) | A kind of pre-buried floral tube grouting and reinforcing device on soft foundation | |
| CN102943480B (en) | Loess foundation pit supporting method | |
| CN202730796U (en) | Existing retaining wall rib plate type unloading reinforcing structure | |
| CN207829905U (en) | A kind of drift-sand stratum bored tunnel three-dimensional supporting construction in advance | |
| CN210216444U (en) | Foundation pit supporting structure of section steel micro pile combined cast-in-place pile | |
| CN204703189U (en) | A kind of cutting barricade being applicable to crevice water, diving growth | |
| CN102493463A (en) | Round borehole hidden-rib anchor rod type supporting structure | |
| CN114109394B (en) | Method for determining pile length of tunnel shallow-buried weak surrounding rock high-pressure jet grouting pile method ground surface reinforcement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20190522 |