CN203559423U - Novel inclined pile and vertical anchor supporting structure next to existing building foundation pit - Google Patents
Novel inclined pile and vertical anchor supporting structure next to existing building foundation pit Download PDFInfo
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- CN203559423U CN203559423U CN201320653907.9U CN201320653907U CN203559423U CN 203559423 U CN203559423 U CN 203559423U CN 201320653907 U CN201320653907 U CN 201320653907U CN 203559423 U CN203559423 U CN 203559423U
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- slope protection
- vertical prestressing
- existing building
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Abstract
A novel inclined pile and vertical anchor supporting structure next to existing building foundation pit comprises inclined slope-protection piles and a pile-top capping beam, wherein a row of inclined slope-protection piles are arranged on the edge of the foundation pit, a pile-top vertical prestressed anchor rod is arranged between every two adjacent inclined slope-protection piles, in addition, the lower part of each pile-top vertical prestressed anchor rod is anchored in a stable soil layer, and the upper part of each pile-top vertical prestressed anchor rod is flexibly connected with the pile-top capping beam; a pile-body vertical prestressed anchor rod is also arranged between every two adjacent inclined slope-protection piles, in addition, the lower part of each pile-body vertical prestressed anchor rod is anchored in the stable soil layer, and the upper part of each pile-body vertical prestressed anchor rod is flexibly connected with a waist beam which is rigidly connected with the inclined slope-protection piles. According to the supporting structure, firstly, the underground space beyond a red line is not occupied completely, the requirement for post-construction environments of a side slope is extremely low, and secondly, higher anchoring force provided by deep soil layers can be fully utilized, so that the whole supporting structure is optimized, and the supporting structure has wide application values.
Description
Technical field
The utility model relates to a kind of building foundation pit supporting system.
Background technology
In building foundation pit supporting design and construction, common are supporting type and the wherein combinations of two or more supporting type such as (compound) plate brad supporting, the supporting of stake (wall) anchor, stake (wall) support supporting, the pattern foundation pit supporting structure of current most object of construction production adopts above-mentioned supporting type.
In recent years, along with the quickening of urban construction process, in urban district, building sharply increases, building density is more and more high, land resources is more and more nervous, and ground, the underground space that utilizes are fewer and feweri, much plan to build building and seize every opportunity, be forced in existing building side and build very nearby apart from existing building, so also cause following problems when making full use of soil:
(1) due to newly-started building foundation pit next-door neighbour existing building, cause the slope support method of new building foundation ditch to be difficult to choose, can not take to put slope excavation, can not carry out again (compound) plate brad supporting.
(2) if take the measures such as pile-anchor retaining or joist anchor supporting, because the restriction in soil body space behind slope is (because of the restriction on existing building basis, behind slope, soil body width is limited), so anchor pole angle is larger, supporting effect is poor, and some side slopes anchor pole of at all cannot constructing, in such cases, although feasible in employing inner support scheme, its implementation cost is higher, operation is numerous and diverse, the construction period is longer, serious to soil excavation and main structure body construction infection.
(3) in recent years, double-row pile technology has obtained certain development, in next-door neighbour's existing building foundation pit stope support, has some superiority, but Double-row Piles Support cost is higher, the pattern foundation pit supporting structure degree of depth also has certain limitation, and supporting safety factor is lower, and after rear campshed applies and is subject to side slope, ambient influnence is larger.
With regard to present circumstances, see, completed or in the excavation slope engineering of many next-door neighbour's existing buildings of building, its supporting effect is all not satisfactory, slope deforming is larger, particularly slope top distortion, this type of foundation ditch accident happens occasionally, so for the defect of above-mentioned all kinds supporting and protection structure self, do not find temporarily can be used for the limited next-door neighbour's existing building foundation ditch of the underground space and there is good supporting effect, can have again easy construction, operation is simple and cost is low New Supporting pattern concurrently.
Utility model content
The purpose of this utility model be to provide that a kind of easy to operate, operation is simple, cost is lower and also have better supporting effect for being close to the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, solving, be applied in the limited next-door neighbour's existing building foundation ditch of the underground space that supporting and protection structure supporting effect is poor, loaded down with trivial details, the complex procedures of constructing and the high technical barrier of cost.
For achieving the above object, the utility model adopts following technical scheme: a kind of for being close to the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, include oblique slope protection pile and stake apical cap beam, described oblique slope protection pile is provided with a row at margin of foundation pit place, and tiltedly the bottom of slope protection pile is stretched under substrate in soil layer, described stake apical cap beam is rigidly connected with the top of oblique slope protection pile, it is characterized in that: between adjacent two oblique slope protection pile, be provided with a top vertical prestressing anchor pole, and the bottom of stake top vertical prestressing anchor pole is anchored in steady soil, the top of stake top vertical prestressing anchor pole and described stake apical cap beam flexibly connect, between adjacent two oblique slope protection pile, be also provided with pile body vertical prestressing anchor pole, and the bottom of pile body vertical prestressing anchor pole is anchored in steady soil, top and the waist rail of pile body vertical prestressing anchor pole flexibly connect, and waist rail is rigidly connected with described oblique slope protection pile again.
The rod body material of described stake top vertical prestressing anchor pole can be steel strand, reinforcing bar or steel tendon, and the rod body material of pile body vertical prestressing anchor pole can be steel strand, reinforcing bar or steel tendon.
Described stake apical cap beam is provided with default pipe fitting, and the top of described stake top vertical prestressing anchor pole flexibly connects with stake apical cap beam through default pipe fitting and by stake top ground tackle and stake top backing plate.
The top of described pile body vertical prestressing anchor pole flexibly connects through waist rail and by pile body ground tackle and pile body backing plate and waist rail.
Described waist rail is comprised of two shaped steel, and the top of described pile body vertical prestressing anchor pole is passed by the gap between two shaped steel.
In described oblique slope protection pile, be provided with steel loop cylinder, be welded to connect again angle-table bracket on steel loop cylinder, described waist rail welds and is placed on angle-table bracket.
Described steel loop cylinder is welded on the periphery of the reinforcing cage in oblique slope protection pile, together with being then cast in oblique slope protection pile.
Described oblique slope protection pile is the oblique slope protection pile of rectangle or circular tiltedly slope protection pile.
Compared with prior art the utlity model has following characteristics and beneficial effect: in the steady soil of the utility model between adjacent two oblique slope protection pile, a top vertical prestressing anchor pole and pile body vertical prestressing anchor pole are set, first design can not take the underground space outside red line completely like this, to construction environment after side slope, requires minimum; Secondly can make full use of the higher anchored force that deep soil layer provides, optimize whole supporting and protection structure; The 3rd, compared with the perpendicular anchor structure of a taper pile of top vertical prestressing anchor pole is only set, improved the stressing conditions of oblique slope protection pile pile body, therefore be not only applicable to conventional foundation ditch, also be applicable to next-door neighbour's existing building foundation ditch that common pile-anchor supporting system cannot be applied, solving in next-door neighbour's tall and big foundation pit stope support of existing building and the urgent consolidation process process of deep foundation ditch, be with a wide range of applications.
The utility model is a kind of for being close to the oblique slope protection pile+vertical bolt support structural shape of existing building, be particularly useful for the limited next-door neighbour's existing building foundation ditch of the underground space, it has obvious advantage in next-door neighbour's existing building deep foundation pit support, not only supporting effect is good, and there is easy construction, simple, the lower-cost advantage of operation, certainly, the utility model also has good supporting effect in conventional foundation pit stope support.
The utility model can effectively reduce top, slope distortion (distortion of stake top), can implement axial prestress to oblique slope protection pile, tiltedly the increase of the axial prestress of slope protection pile can improve again the Lateral Resistance of oblique slope protection pile, and the utility model has also improved the cantilever height of oblique slope protection pile.So in sum, the utility model is by arranging a top vertical prestressing anchor pole and pile body vertical prestressing anchor pole, changed taper pile pile body distribution of force feature, improved pile body force-bearing situation, optimized pile body stressed, make structure become more reasonable, therefore under equal conditions, applicable to darker foundation ditch.
The utility model has adopted stake top vertical prestressing anchor pole and a row or multi-row pile body vertical prestressing anchor pole, the benefit of design is like this: 1, compared with a top vertical prestressing anchor pole is only set, the pile body vertical prestressing anchor pole of setting up can the darker foundation ditch of supporting, or for the urgent consolidation process of deep foundation ditch, be applicable to the pattern foundation pit supporting structure of next-door neighbour's existing building that the degree of depth is larger; 2,, compared with a top vertical prestressing anchor pole is only set, the pile body vertical prestressing anchor pole of setting up can more effectively reduce the distortion of stake top, increases taper pile axial prestress, improves Lateral Resistance; 3, compared with a top vertical prestressing anchor pole is only set, during for same foundation ditch, the pile body vertical prestressing anchor pole of setting up can reduce taper pile stake footpath, saves material, reduces costs.
The utility model is compared with Retaining Structure with Double-row Piles, do not affecting under the prerequisite of foundation ditch safety factor, can simplify working procedure, save engineering material, reduce construction cost, shorten the construction period, compared with the perpendicular anchor structure of a taper pile of top vertical prestressing anchor pole is only set, can the darker next-door neighbour's existing building foundation ditch of supporting, for the urgent consolidation process of deep foundation ditch.
All working procedures of the present utility model are all at ground construction, compared with traditional supporting and protection structure, have avoided the crossed construction in hole, have shortened the duration, have simplified operation, have improved safety.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Fig. 1 is facade structures schematic diagram of the present utility model.
Fig. 2 is that schematic diagram is looked on a left side of Fig. 1.
Fig. 3 is the schematic top plan view of Fig. 1.
Fig. 4 is an apical cap beam and a facade structures schematic diagram at the connected node place of top vertical prestressing anchor pole.
Fig. 5 is the facade structures schematic diagram at the connected node place of waist rail and pile body vertical prestressing anchor pole.
Soil layer, 11-pile body vertical prestressing anchor pole, 12-waist rail, 13-shaped steel, 14-angle-table bracket, 15-steel loop cylinder, 16-pile body backing plate under the default pipe fitting of the oblique slope protection pile of Reference numeral: 1-, 2-stake apical cap beam, 3-stake top vertical prestressing anchor pole, 4-stake top ground tackle, 5-stake top backing plate, 6-, 7-existing building basis (or red line region etc.), 8-steady soil, 9-pile body ground tackle, 10-substrate.
The specific embodiment
Embodiment is referring to shown in Fig. 1-5, it is this that for being close to the perpendicular anchor of novel taper pile of existing building foundation ditch, (English of the perpendicular anchor of taper pile is inclined pile vertical anchor, be called for short IPVA) supporting and protection structure, by oblique slope protection pile 1, stake apical cap beam 2(is Cast-in-situ Beam, stake apical cap beam section is rectangle), waist rail 12, stake top vertical prestressing anchor pole 3 and pile body vertical prestressing anchor pole 11 form, described oblique slope protection pile 1 is provided with a row at margin of foundation pit place, and tiltedly the bottom of slope protection pile 1 is stretched under substrate in soil layer 10 (concrete length is determined as calculated), described stake apical cap beam 2 is rigidly connected with the top of oblique slope protection pile 1.Described oblique slope protection pile 1 is reinforced concrete pile, is the space enclosing structure of excavation slope, and the stake top of oblique slope protection pile 1 and main muscle thereof stretch into a height for apical cap beam 2 and will meet country, industry standard.
Described stake top vertical prestressing anchor pole 3 is arranged between adjacent two oblique slope protection pile 1, and the bottom of stake top vertical prestressing anchor pole 3 is anchored in steady soil 8, and the top of stake top vertical prestressing anchor pole 3 and described stake apical cap beam 2 flexibly connect.Stake apical cap beam 2 is rigidly connected with the top of oblique slope protection pile 1, be applied with to oblique slope protection pile 1 and be beneficial to moment and the prestressing force that oblique slope protection pile 1 is stable, on the one hand the anchored force (square) of stake top vertical prestressing anchor pole 3 is delivered in oblique slope protection pile 1, on the other hand part anchor pole power is passed to oblique slope protection pile 1, oblique slope protection pile 1 is applied to axial prestress.
In the present embodiment, stake apical cap beam 2 is provided with default pipe fitting 6, and the top of described stake top vertical prestressing anchor pole 3 flexibly connects with stake apical cap beam 2 through default pipe fitting 6 and by stake top ground tackle 4 and stake top backing plate 5.
Described pile body vertical prestressing anchor pole 11 is also arranged between adjacent two oblique slope protection pile 1, the bottom of pile body vertical prestressing anchor pole 11 is anchored in steady soil 8, top and the waist rail 12 of pile body vertical prestressing anchor pole 11 flexibly connect, and waist rail 12 is rigidly connected with described oblique slope protection pile 1 again.
In the present embodiment, pile body vertical prestressing anchor pole 11 is provided with a row, and corresponding waist rail 12 is provided with one, in other embodiments, two rows, three row or multiline pile body vertical prestressing anchor poles 11 more can also be set, and corresponding waist rail 12 is also provided with two, three or more.
In the present embodiment, the top of pile body vertical prestressing anchor pole 11 flexibly connects with waist rail 12 through waist rail 12 and by pile body ground tackle 9 and pile body backing plate 16.Waist rail is comprised of two shaped steel 13, and the top of pile body vertical prestressing anchor pole 11 is passed by the gap between two shaped steel 13.
In the present embodiment, tiltedly in slope protection pile 1, be provided with steel loop cylinder 15(steel loop cylinder and be welded on the periphery of the reinforcing cage of oblique slope protection pile 1, then together with being cast in oblique slope protection pile 1), on steel loop cylinder 15, be welded to connect angle-table bracket 14, described waist rail 12 welds and is placed on angle-table bracket 14.Shaped steel 13 is fixed on steel loop cylinder by angle-table bracket 14, on the one hand the anchored force (square) of pile body vertical prestressing anchor pole 11 is delivered in oblique slope protection pile 1, on the other hand part anchor pole power is passed to oblique slope protection pile 1, and oblique slope protection pile 1 is applied to axial prestress.
The section form of described oblique slope protection pile 1 is rectangle or circle, and tiltedly slope protection pile 1 adopts mechanical hole building or manual pore-forming.
The rod body material of described stake top vertical prestressing anchor pole 3 and pile body vertical prestressing anchor pole 11 is the common used materials such as steel strand, reinforcing bar or steel tendon, stake top vertical prestressing anchor pole 3 and pile body vertical prestressing anchor pole 11 are divided into anchoring section and free segment, the tensioning lock definite value of the original position of anchoring section and length, anchor pole is definite afterwards as calculated, and anchoring section injecting paste material is cement paste or other slurries.The vertical prestressing anchor pole hole corresponding with stake top vertical prestressing anchor pole 3 and pile body vertical prestressing anchor pole 11 is mechanical hole building.
Described for being close to the construction method of the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, its construction sequence is as follows: step 1, discharge oblique slope protection pile stake site; Step 2, carry out oblique slope protection pile 1 and construct; Step 3, construction stake top vertical prestressing anchor pole 3; Step 4, construction stake apical cap beam 2, be rigidly connected an apical cap beam and oblique slope protection pile 1, and an apical cap beam and a stake top vertical prestressing anchor pole 3 are flexibly connected; Step 5, when oblique slope protection pile 1, stake top vertical prestressing anchor pole 3 and a stake apical cap beam 2 reach after the design strength of regulation, stake top vertical prestressing anchor pole 3 is carried out to tensioning fixation; Step 6, the above excavation of foundation pit of waist rail, and according to the data of monitoring, optionally stake top vertical prestressing anchor pole 3 is carried out to follow-up benefit stretch-draw; Step 7, construction pile body vertical prestressed anchor bar 11; Step 8, construction waist rail 12, be rigidly connected waist rail and oblique slope protection pile 1, waist rail and pile body vertical prestressing anchor pole 11 flexibly connected, and pile body vertical prestressing anchor pole 11 is carried out to tensioning fixation; Step 9, the following excavation of foundation pit of waist rail, and according to the data of monitoring, optionally stake top vertical prestressing anchor pole and pile body vertical prestressing anchor pole are carried out to follow-up benefit stretch-draw.
Content described in this manual embodiment is only that utility model design realized to enumerating of pattern; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also and in those skilled in the art, according to the utility model, conceive the equivalent technologies means that can expect.
Claims (8)
1. one kind is erected anchor supporting and protection structure for the novel taper pile that is close to existing building foundation ditch, include oblique slope protection pile (1) and stake apical cap beam (2), described oblique slope protection pile (1) is provided with a row at margin of foundation pit place, and tiltedly the bottom of slope protection pile (1) is stretched in soil layer under substrate (10), described stake apical cap beam (2) is rigidly connected with the top of oblique slope protection pile (1), it is characterized in that:
Between adjacent two oblique slope protection pile (1), be provided with a top vertical prestressing anchor pole (3), and the bottom of stake top vertical prestressing anchor pole (3) is anchored in steady soil (8), the top of stake top vertical prestressing anchor pole (3) and described stake apical cap beam (2) flexibly connect;
Between adjacent two oblique slope protection pile (1), be also provided with pile body vertical prestressing anchor pole (11), and the bottom of pile body vertical prestressing anchor pole (11) is anchored in steady soil (8), the top of pile body vertical prestressing anchor pole (11) and waist rail (12) flexibly connect, and waist rail (12) is rigidly connected with described oblique slope protection pile (1) again.
2. according to claim 1 for being close to the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, it is characterized in that: the rod body material of described stake top vertical prestressing anchor pole (3) is steel strand, reinforcing bar or steel tendon, and the rod body material of pile body vertical prestressing anchor pole (11) is steel strand, reinforcing bar or steel tendon.
3. according to claim 1 for being close to the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, it is characterized in that: described stake apical cap beam (2) is provided with default pipe fitting (6), the top of described stake top vertical prestressing anchor pole (3) is through presetting pipe fitting (6), also flexibly connecting with an apical cap beam (2) by stake top ground tackle (4) and stake top backing plate (5).
4. according to claim 1 for being close to the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, it is characterized in that: the top of described pile body vertical prestressing anchor pole (11) is passed waist rail (12), also by pile body backing plate (16) and pile body ground tackle (9), flexibly connected with waist rail (12).
5. according to claim 4 for being close to the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, it is characterized in that: described waist rail is comprised of two shaped steel (13), the top of described pile body vertical prestressing anchor pole (11) is by passing in the gap between two shaped steel (13).
6. according to claim 5 for being close to the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, it is characterized in that: in described oblique slope protection pile (1), be provided with steel loop cylinder (15), on steel loop cylinder (15), be welded to connect again angle-table bracket (14), described waist rail welds and is placed on angle-table bracket (14).
7. according to claim 6 for being close to the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, it is characterized in that: described steel loop cylinder (15) is welded on the periphery of the reinforcing cage in oblique slope protection pile (1), together with being then cast in oblique slope protection pile (1).
8. according to claim 1 for being close to the perpendicular anchor supporting and protection structure of novel taper pile of existing building foundation ditch, it is characterized in that: described oblique slope protection pile (1) is the oblique slope protection pile of rectangle or circular tiltedly slope protection pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320653907.9U CN203559423U (en) | 2013-10-23 | 2013-10-23 | Novel inclined pile and vertical anchor supporting structure next to existing building foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320653907.9U CN203559423U (en) | 2013-10-23 | 2013-10-23 | Novel inclined pile and vertical anchor supporting structure next to existing building foundation pit |
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| CN203559423U true CN203559423U (en) | 2014-04-23 |
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| CN201320653907.9U Expired - Fee Related CN203559423U (en) | 2013-10-23 | 2013-10-23 | Novel inclined pile and vertical anchor supporting structure next to existing building foundation pit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695249A (en) * | 2019-03-03 | 2019-04-30 | 中国科学院武汉岩土力学研究所 | A kind of herringbone foundation pit supporting construction |
| CN110106891A (en) * | 2019-06-10 | 2019-08-09 | 高严慧 | A kind of anchor rete cord-shape steel bracket coupling supporting structure |
| CN111705813A (en) * | 2020-07-24 | 2020-09-25 | 北京中岩大地科技股份有限公司 | Combined type inclined pile anchor rod foundation pit supporting system and supporting method |
| CN112962636A (en) * | 2021-02-20 | 2021-06-15 | 云南建投基础工程有限责任公司 | Positioning device and construction method for inclined steel pipe supporting side slope |
| CN115341551A (en) * | 2022-08-05 | 2022-11-15 | 中建一局集团第二建筑有限公司 | Composite soil nail supporting structure for limited soil body and construction method thereof |
-
2013
- 2013-10-23 CN CN201320653907.9U patent/CN203559423U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695249A (en) * | 2019-03-03 | 2019-04-30 | 中国科学院武汉岩土力学研究所 | A kind of herringbone foundation pit supporting construction |
| CN109695249B (en) * | 2019-03-03 | 2024-01-12 | 中国科学院武汉岩土力学研究所 | Herringbone foundation pit supporting structure |
| CN110106891A (en) * | 2019-06-10 | 2019-08-09 | 高严慧 | A kind of anchor rete cord-shape steel bracket coupling supporting structure |
| CN110106891B (en) * | 2019-06-10 | 2020-11-27 | 六安中达信息科技有限公司 | Anchor net cable-profile steel support coupling supporting structure |
| CN111705813A (en) * | 2020-07-24 | 2020-09-25 | 北京中岩大地科技股份有限公司 | Combined type inclined pile anchor rod foundation pit supporting system and supporting method |
| CN112962636A (en) * | 2021-02-20 | 2021-06-15 | 云南建投基础工程有限责任公司 | Positioning device and construction method for inclined steel pipe supporting side slope |
| CN115341551A (en) * | 2022-08-05 | 2022-11-15 | 中建一局集团第二建筑有限公司 | Composite soil nail supporting structure for limited soil body and construction method thereof |
| CN115341551B (en) * | 2022-08-05 | 2023-07-04 | 中建一局集团第二建筑有限公司 | Composite soil nail supporting structure for limited soil body and construction method thereof |
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|---|---|---|---|
| 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: 20140423 Termination date: 20161023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |