CN202298633U - Arch root pile isolation piling wall - Google Patents
Arch root pile isolation piling wall Download PDFInfo
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- CN202298633U CN202298633U CN 201120400680 CN201120400680U CN202298633U CN 202298633 U CN202298633 U CN 202298633U CN 201120400680 CN201120400680 CN 201120400680 CN 201120400680 U CN201120400680 U CN 201120400680U CN 202298633 U CN202298633 U CN 202298633U
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Abstract
The utility model relates to an arch root pile isolation piling wall and belongs to the technical field of a foundation reinforcement and neighboring building protection technology in the foundation pit engineering. The arch root pile isolation piling wall is characterized in that root piles are arranged between a foundation pit underground diaphragm wall and a protection building foundation, are mutually parallel and are arranged in an arch shape in the horizontal direction; the upper ends of the root piles are connected into one whole body by arch top ring beams; and springers of the arch top ring beams are overlapped with a cement-soil mixing pile and are connected with rigid wedge blocks arranged at the corresponding positions on a groove section of the foundation pit underground diaphragm wall. According to the utility model, on the basis of a three-hinged arch principle, the single root piles are connected into one whole body by the arch top ring beams to form a pressed arch structure capable of bearing the pressure of soil outside a pit and an additional load, and the cement-soil mixing pile and the rigid wedge blocks are used for providing stress fulcrums for the springers. The integral root pile isolation piling wall structure capable of being spacially stressed can well play the arch action effect and separate transmission of deformation of the foundation pit to a protected object in both the underground diaphragm wall construction stage and the foundation pit excavation stage. The deformation control effect is excellent.
Description
Technical field
The utility model belongs to base pit engineering ground stabilization and adjacent building resist technology field, is specifically related to a kind of arch root pile and isolates piling wall.
Background technology
Because the urban district building is intensive, pipeline is numerous, the subway station is densely covered, subway sectional tunnel is crisscross, deep-foundation pit engineering, especially soft clay area deep-foundation pit engineering under this complicated urban environment condition more and more receive Effect of Environmental.In this case, except base pit stability and the necessary controlled condition of bearing capacity, distortion often becomes main controlled condition, thereby makes the design of base pit engineering changed to Deformation control by strength control.
Foundation ditch isolate outward piling wall be between foundation pit enclosure structure and object of protection, cement mixing method is set, high pressure jet grouting adds solid or bored pile etc., plays the purpose of cutting off foundation pit deformation power bang path.But traditional isolation piling wall is because self bending resistance degree is little; And only single setting; So the partition effect to distortion is limited; Many rows are provided with again economical inadequately, and therefore how under the condition that does not significantly increase engineering quantity, effectively to improve the distortion of isolating piling wall and cut off effect, be one technical barrier of pendulum in face of the engineer.
Root pile is a kind of slim hole castinplace pile, and general diameter is 150～300mm, the long 5～30m of stake.It is utilize small-sized drill (having alloy tool steel bit when underpining) by intended diameter, creep into to projected depth, reinforcing cage is also put into and Grouting Pipe in clear then hole, injects cement paste or cement mortar through Grouting Pipe, in conjunction with the crushed stone aggregate pile.Root pile can be made vertical, that tilt, single, in a row or netted as required, owing to its formed bunchy pile foundation shape is gained the name like " tree root ".
Since the last century the eighties, what root pile was widely used in existing building reparation and the anchoring that increases the underpining of the underpining of layer, ancient building trimming, slope treatment, subway tunnel passes through reinforcing etc.But in the base pit engineering technical field; The research of the mechanism of action of root pile protection is less relatively under the excavation of foundation pit condition; Its engineering practice effect verified as yet comprehensively and effectively, so also there is a lot of dispute in this technology of base pit engineering bound pair, thus hindered should technology further popularization.
Summary of the invention
Deficiency to above-mentioned prior art existence; The purpose of the utility model provides a kind of arch root pile and isolates piling wall; Not only can actively utilize soil arching effect effectively to cut off the adjacent building composition deformation that foundation pit construction causes; Also can effectively cut off the disturbance distortion of the outer soil body in excavation of foundation pit stage hole, thereby, satisfy of the strictness control requirement of foundation ditch surrounding enviroment distortion to the additional deformation achieve effective control that foundation pit construction causes.
For achieving the above object, the technical scheme of employing is: the arch root pile is isolated piling wall, comprises protection building foundation, root pile; The foundation ditch diaphragm wall; It is characterized in that: said root pile places between foundation ditch diaphragm wall and the protection building foundation, be arranged in parallel, and horizontal direction is the arch arrangement; The upper end of said root pile fuses through the arch top beam; The arch springing of arch top beam and the cement mixing method overlap joint that places the foundation ditch diaphragm wall outside, and through said cement mixing method, join with the rigidity voussoir that places foundation ditch underground continuous wall groove segment relevant position.
Said cement mixing method is double cement mixing method, interlock in twos.
Be equipped with pre-buried Grouting Pipe between said arch root pile and the protection building foundation.
Said arch top beam is the cast-in-situ steel reinforced concrete beam.
The utility model utilizes the arch top beam to fuse single root pile based on the three hinged arch principle, and composition can bear the pressurized domes of outer soil pressure in hole and imposed load, and cement mixing method and rigidity voussoir are that arch springing provides stressed fulcrum.But the full tree pile isolation pile wall construction of space-load can effectively reduce the pressure that acts on the foundation pit enclosure structure, and the control foundation pit construction is to the adverse effect of periphery protection building.No matter be in the construction of diaphragm wall stage or in the excavation of foundation pit stage, all can bring into play the arching action effect of isolating piling wall preferably, cut off the transmission of foundation pit deformation to object of protection, Deformation control is respond well.
Description of drawings
Below in conjunction with accompanying drawing and the specific embodiment being described further to the utility model.
Fig. 1 is the utility model plane structure sketch map;
Fig. 2 is the A-A cross-sectional view of Fig. 1.
Among the figure: the 1-root pile; 2-arch top beam; The 3-cement mixing method; 4-foundation ditch diaphragm wall; 5-protects building foundation; 6-rigidity voussoir; The pre-buried Grouting Pipe of 7-.
The specific embodiment
Fig. 1 and Fig. 2 show the structural representation of the utility model respectively.Visible by figure, the arch root pile is isolated piling wall, comprises protection building foundation 5, root pile 1; Foundation ditch diaphragm wall 4; It is characterized in that: said root pile 1 places between foundation ditch diaphragm wall 4 and the protection building foundation 5, be arranged in parallel, and horizontal direction is the arch arrangement; The upper end of said root pile 1 fuses through arch top beam 2; The arch springing of arch top beam 2 and the cement mixing method that places foundation ditch diaphragm wall 4 outsides 3 overlap joints, and through cement mixing method 3, join with the rigidity voussoir 6 that places foundation ditch diaphragm wall 4 groove section relevant positions.
Said cement mixing method 3 is double cement mixing method, interlock in twos, and the arch springing of arch top beam 2 and cement mixing method 3 overlap joints are for domes provide the longitudinal stress fulcrum and transmit lateral force.
Be equipped with pre-buried Grouting Pipe 7 between said arch root pile 1 and the protection building foundation 5, can carry out the later stage tracing compensation and grouting according to deformation measurement data and reinforce, as remedial Deformation control and reinforcement measure.
Said arch top beam 2 is the cast-in-situ steel reinforced concrete beam.Arch top beam 2 links to each other 1 top of single root pile, forms the lateral stressed arch of domes.
Described arch root pile 1 span is consistent with foundation ditch diaphragm wall 4 groove section width; And said rigidity voussoir 6 is located at and the corresponding foundation ditch diaphragm wall of arch top beam 2 arch springings 4 groove section spigot positions; Can adopt steel or steel concrete rigidity voussoir 6 to insert, also can directly adopt the fore shaft pipe to insert.
Embodiment: the excavation of foundation pit degree of depth is 13m, and foundation ditch diaphragm wall 4 outer side edges are 3m with protection building minimum distance, between foundation pit enclosure structure and protection building foundation 5, the arch root pile are set and isolate piling wall.The foundation ditch monitoring result shows: 4 grooving stages of foundation ditch diaphragm wall protection building foundation, 5 maximum settlements are 2mm only, and it is 12mm that excavation of foundation pit finishes back protection building maximum settlement, and the protection construction wall is not seen obvious cracking, shows that building does not receive structural damage.No matter embodiment is all to have brought into play the arching action effect of isolating piling wall preferably in the construction of diaphragm wall stage or in the excavation of foundation pit stage, cuts off the transmission of foundation pit deformation to object of protection.Practice shows that after employing the utility model technical scheme, Deformation control is respond well.
Though the utility model discloses as above with preferred embodiment; Right its is not in order to limit the utility model; Any those skilled in the art; In spirit that does not break away from the utility model and scope, when can doing a little modification and perfect, so the protection domain of the utility model is when being as the criterion with what claims defined.
Claims (4)
1. the arch root pile is isolated piling wall; Comprise protection building foundation (5), root pile (1), foundation ditch diaphragm wall (4) is characterized in that: said root pile (1) places between foundation ditch diaphragm wall (4) and the protection building foundation (5); Be arranged in parallel; And horizontal direction is arch arranges, and the upper end of said root pile (1) fuses through arch top beam (2), the arch springing of arch top beam (2) and cement mixing method (3) overlap joint that places foundation ditch diaphragm wall (4) outside; And, join with the rigidity voussoir (6) that places foundation ditch diaphragm wall (4) groove section relevant position through said cement mixing method (3).
2. arch root pile according to claim 1 is isolated piling wall, it is characterized in that: said cement mixing method (3) is double cement mixing method, interlock in twos.
3. arch root pile according to claim 1 is isolated piling wall, it is characterized in that: be equipped with pre-buried Grouting Pipe (7) between said arch top beam (2) and the protection building foundation (5).
4. arch root pile according to claim 1 is isolated piling wall, and it is characterized in that: said arch top beam (2) is the cast-in-situ steel reinforced concrete beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120400680 CN202298633U (en) | 2011-10-20 | 2011-10-20 | Arch root pile isolation piling wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120400680 CN202298633U (en) | 2011-10-20 | 2011-10-20 | Arch root pile isolation piling wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202298633U true CN202298633U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201120400680 Expired - Fee Related CN202298633U (en) | 2011-10-20 | 2011-10-20 | Arch root pile isolation piling wall |
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| CN (1) | CN202298633U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114611A (en) * | 2013-03-01 | 2013-05-22 | 同济大学 | Multistage cut-off method for underpass high-speed rail bridge opening deformation |
| CN103174170A (en) * | 2013-03-22 | 2013-06-26 | 中冶集团武汉勘察研究院有限公司 | Cement-soil wall continuous arch structure used for strengthening weak soil in passive region of foundation pit and strengthening method |
| CN105155554A (en) * | 2015-09-25 | 2015-12-16 | 武汉高铁桩工科技有限公司 | Deep foundation pit of arched supporting system |
| CN108166504A (en) * | 2018-01-17 | 2018-06-15 | 广州地铁设计研究院有限公司 | A kind of reinforced double steel sheet piling pit supporting construction and its construction method |
| CN108612082A (en) * | 2018-04-20 | 2018-10-02 | 浙江大学城市学院 | One type shaped form TRD walls and its construction method |
| CN109403336A (en) * | 2018-09-28 | 2019-03-01 | 上海建工七建集团有限公司 | A kind of closing foundation ditch side dilapidated house protects structure and its construction method |
-
2011
- 2011-10-20 CN CN 201120400680 patent/CN202298633U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114611A (en) * | 2013-03-01 | 2013-05-22 | 同济大学 | Multistage cut-off method for underpass high-speed rail bridge opening deformation |
| CN103174170A (en) * | 2013-03-22 | 2013-06-26 | 中冶集团武汉勘察研究院有限公司 | Cement-soil wall continuous arch structure used for strengthening weak soil in passive region of foundation pit and strengthening method |
| CN103174170B (en) * | 2013-03-22 | 2015-07-22 | 中冶集团武汉勘察研究院有限公司 | Cement-soil wall continuous arch structure used for strengthening weak soil in passive region of foundation pit and strengthening method |
| CN105155554A (en) * | 2015-09-25 | 2015-12-16 | 武汉高铁桩工科技有限公司 | Deep foundation pit of arched supporting system |
| CN105155554B (en) * | 2015-09-25 | 2017-12-05 | 武汉谦诚桩工科技股份有限公司 | A kind of deep basal pit of arching system |
| CN108166504A (en) * | 2018-01-17 | 2018-06-15 | 广州地铁设计研究院有限公司 | A kind of reinforced double steel sheet piling pit supporting construction and its construction method |
| CN108612082A (en) * | 2018-04-20 | 2018-10-02 | 浙江大学城市学院 | One type shaped form TRD walls and its construction method |
| CN109403336A (en) * | 2018-09-28 | 2019-03-01 | 上海建工七建集团有限公司 | A kind of closing foundation ditch side dilapidated house protects structure and its construction method |
| CN109403336B (en) * | 2018-09-28 | 2020-12-11 | 上海建工七建集团有限公司 | Dangerous house protection structure near foundation pit and construction method thereof |
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| 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 |
Granted publication date: 20120704 Termination date: 20151020 |
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| EXPY | Termination of patent right or utility model |