CN203498841U - Inclined pile vertical anchor rod supporting structure used for foundation pit supporting - Google Patents
Inclined pile vertical anchor rod supporting structure used for foundation pit supporting Download PDFInfo
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- CN203498841U CN203498841U CN201320609111.3U CN201320609111U CN203498841U CN 203498841 U CN203498841 U CN 203498841U CN 201320609111 U CN201320609111 U CN 201320609111U CN 203498841 U CN203498841 U CN 203498841U
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- slope protection
- pile
- anchor pole
- foundation pit
- vertical
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Abstract
Disclosed is an inclined pile vertical anchor rod supporting structure used for foundation pit supporting. The inclined pile vertical anchor rod supporting structure comprises a row of inclined slope protection piles, a pile top beam and anchor rods, wherein the inclined slope protection piles are arranged at the edge of a foundation pit, and the bottoms of the inclined slope protection piles stretch into the soil layer below a substrate. The inclined pile vertical anchor rod supporting structure is characterized in that the anchor rods comprise the vertical pre-stressed anchor rods, the vertical pre-stressed anchor rods are arranged in the portion, between two adjacent inclined slope protection piles, of the stable soil layer and are inserted into the ground between the two adjacent inclined slope protection piles and anchored into the stable soil layer; the pile top beam is connected with the tops of the inclined slope protection poles in a rigid mode, and the pile top beam is connected with the upper portions of the vertical pre-stressed anchor rods in a flexible mode. The supporting system and construction method are particularly suitable for adjacent existing building foundation pits with limited underground space, have obvious advantages in adjacent existing building foundation pit supporting, are good in supporting effect, and have the advantages that construction can be conveniently carried out, processes are simple and cost is low.
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 the supporting types such as (compound) plate brad supporting, the supporting of stake (wall) anchor, stake (wall) support supporting and the wherein combination of two kinds and two or more supporting types, 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, a lot of buildings are seized every opportunity, other and build very nearby apart from existing building at existing building, so caused 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 (compound) plate brad supporting again.
(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, 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, but Double-row Piles Support cost is higher, and 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, the pattern foundation pit supporting structure effect of existing next-door neighbour's existing building of having constructed is all not satisfactory, and slope deforming is larger, and this type of foundation ditch accident happens occasionally, particularly the distortion of top, slope.So defect for above-mentioned all kinds supporting and protection structure self, not finding temporarily can either be for the limited next-door neighbour's existing building foundation ditch of the underground space the supporting effect having had, and the while 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 is to provide that a kind of easy to operate, operation is simple, cost is lower and has the vertical bolt support structure of the taper pile for pattern foundation pit supporting structure of better supporting effect, solve that the support system supporting effect being applied in the limited next-door neighbour's existing building foundation ditch of the underground space is poor, loaded down with trivial details, the complex procedures of constructing and the high technical problem of cost.
For achieving the above object, the utility model adopts following technical scheme: the vertical bolt support structure of a kind of taper pile for pattern foundation pit supporting structure, include oblique slope protection pile, stake apical cap beam and anchor pole, 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, it is characterized in that: described anchor pole includes vertical prestressing anchor pole, vertical prestressing anchor pole is arranged in the steady soil between adjacent two oblique slope protection pile, and the ground of vertical prestressing anchor pole between adjacent two oblique slope protection pile inserts and is anchored in steady soil, described stake apical cap beam is rigidly connected with the top of oblique slope protection pile, and the top of stake apical cap beam and vertical prestressing anchor pole flexibly connects simultaneously.
Described vertical prestressing anchor pole and horizontal plane can be the angle of 60 °～90 °.
Described vertical prestressing anchor pole can be steel strand, reinforcing bar or steel tendon.
On described stake apical cap beam, can be provided with default pipe fitting, the top of described vertical prestressing anchor pole flexibly connects with an apical cap beam through default pipe fitting and by anchor head and backing plate.
Described stake apical cap beam can be Cast-in-situ Beam or precast beam.
Described oblique slope protection pile can be 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, vertical prestressing anchor pole is set, and the ground of vertical prestressing anchor pole between adjacent two oblique slope protection pile inserts and is anchored in steady soil, the top of vertical prestressing anchor pole is connected with stake apical cap beam simultaneously, bottom anchors in steady soil, first design can not take the underground space outside red line completely like this, to construction environment after side slope, require minimum, secondly can make full use of the higher anchored force that deep soil layer provides, optimized whole supporting and protection structure, so 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 simultaneously.
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 the Lateral Resistance of oblique slope protection pile again, and the utility model has also improved the cantilever height of oblique slope protection pile.So in sum, the utility model has improved pile body force-bearing situation, therefore under equal conditions, and applicable to darker foundation ditch.
All working procedures of the present utility model, all at ground construction, are compared with traditional supporting and protection structure, have avoided the crossed construction in hole, have shortened the duration, have simplified operation, have improved safety.
The utility model is compared with Retaining Structure with Double-row Piles, not affecting under the prerequisite of foundation ditch safety factor, can simplify working procedure, saves engineering material, reduces construction cost, shortens the construction period.
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 the schematic top plan view of Fig. 1.
Fig. 3 is the plan structure schematic diagram at the connected node place of an apical cap beam and vertical prestressing anchor pole.
Fig. 4 is the facade structures schematic diagram at the connected node place of an apical cap beam and vertical prestressing anchor pole.
Soil layer under ground between the oblique slope protection pile of Reference numeral: 1-, 2-stake apical cap beam, 3-vertical prestressing anchor pole, 4-anchor head, 5-backing plate, the default pipe fitting of 6-, 7-existing building basis, 8-steady soil, the adjacent two oblique slope protection pile of 9-, 10-substrate.
The specific embodiment
Embodiment is referring to shown in Fig. 1-4, and the vertical anchor pole of this taper pile for pattern foundation pit supporting structure (English of the vertical anchor pole of taper pile is inclined pile vertical anchor, is called for short IPVA) supporting and protection structure, includes oblique slope protection pile 1, stake apical cap beam 2 and anchor pole.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, and concrete length is definite by designing according to the soil layer situation at position of living in.Tiltedly slope protection pile 1 can be the oblique slope protection pile of the oblique slope protection pile of rectangle, circular tiltedly slope protection pile or other abnormity.
Described anchor pole includes vertical prestressing anchor pole 3, and vertical prestressing anchor pole 3 is arranged in the steady soil 8 between adjacent two oblique slope protection pile 1, and the ground 9 of vertical prestressing anchor pole 3 between adjacent two oblique slope protection pile is inserted and is anchored in steady soil 8; Described steady soil 8 is positioned at foundation ditch and existing building basis 7(or red line region, underground obstacle etc.) between.
Vertical prestressing anchor pole 3 is comprised of anchoring section and free segment, and the length allocation of anchoring section and free segment, prestressed stretch-draw lock value are determined by design; The rod body material of vertical prestressing anchor pole 3 adopts conventional material, and as steel strand, reinforcing bar and steel tendon etc., the injecting paste material of the anchoring section of vertical prestressing anchor pole 3 is cement paste or other slurries; During 3 construction of vertical prestressing anchor pole, boring is by drilling machine construction or manual pore-forming.Vertical prestressing anchor pole 3 is to be generally the angle of 60 °～90 ° with horizontal plane, and in the present embodiment, vertical prestressing anchor pole 3 is horizontal by the angle of 90 °.
Described stake apical cap beam 2 is rigidly connected with the top of oblique slope protection pile 1, and stake apical cap beam 2 flexibly connects with the top of vertical prestressing anchor pole 3 simultaneously.The top of described oblique slope protection pile 1 (stake top) and main muscle thereof stretch into a height for apical cap beam 2 and meet national sector standard, as 50mm.
Stake apical cap beam 2 is reinforced concrete beams, this stud apical cap beam 2 can be Cast-in-situ Beam, also can be precast beam, stake apical cap beam 2 is delivered to the anchored force of vertical prestressing anchor pole 3 (square) in oblique slope protection pile on the one hand, on the other hand part anchor pole power is passed to oblique slope protection pile 1, oblique slope protection pile 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 vertical prestressing anchor pole 3 flexibly connects with stake apical cap beam 2 through default pipe fitting 6 and by anchor head 4 and backing plate 5.
In addition,, when absolute altitude at the bottom of the hole of foundation ditch is during lower than existing building substrate absolute altitude, for the vertical bolt support structure of taper pile of pattern foundation pit supporting structure, can also lay conventional anchor pole and waist rail if necessary in side slope lower position.
The construction method of the vertical bolt support structure of the described taper pile for pattern foundation pit supporting structure, its step is as follows.
Step 1, discharge oblique slope protection pile stake site; Step 2, carry out 1 construction of oblique slope protection pile, it is definite that construction method is looked stake type, soil layer situation and surrounding enviroment that design adopts, as manual pore-forming, long spiral, revolve and the construction method such as dig; Step 3, construction 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 vertical prestressing anchor pole 3 are flexibly connected; Step 5, when oblique slope protection pile 1, vertical prestressing anchor pole 3 and a stake apical cap beam 2 reach after the design strength of regulation, vertical prestressing anchor pole 3 is carried out to tensioning fixation (utilizing hollow jack to carry out tensioning fixation); Step 6, excavation pit, and according to the data of monitoring, optionally vertical prestressing anchor pole 3 is carried out to follow-up benefit stretch-draw.
When absolute altitude at the bottom of the hole of foundation ditch is during lower than existing building substrate absolute altitude, can also be in step 6, at excavation of foundation pit, during to side slope lower position, optionally lay conventional anchor pole and waist rail (specifically by design, being determined), to reach better combination supporting effect.
Content described in this manual embodiment is only enumerating the way of realization of utility model design; 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 the equivalent technologies means that can expect according to the utility model design in those skilled in the art.
Claims (6)
1. the vertical bolt support structure of the taper pile for pattern foundation pit supporting structure, include oblique slope protection pile (1), stake apical cap beam (2) and anchor pole, 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), it is characterized in that:
Described anchor pole includes vertical prestressing anchor pole (3), vertical prestressing anchor pole (3) is arranged in the steady soil (8) between adjacent two oblique slope protection pile (1), and the ground (9) of vertical prestressing anchor pole (3) between adjacent two oblique slope protection pile is inserted and is anchored in steady soil (8);
Described stake apical cap beam (2) is rigidly connected with the top of oblique slope protection pile (1), and stake apical cap beam (2) flexibly connects with the top of vertical prestressing anchor pole (3) simultaneously.
2. the vertical bolt support structure of the taper pile for pattern foundation pit supporting structure according to claim 1, is characterized in that: described vertical prestressing anchor pole (3) is horizontal by the angle of 60 °～90 °.
3. the vertical bolt support structure of the taper pile for pattern foundation pit supporting structure according to claim 1, is characterized in that: described vertical prestressing anchor pole (3) is steel strand, reinforcing bar or steel tendon.
4. the vertical bolt support structure of the taper pile for pattern foundation pit supporting structure according to claim 1, it is characterized in that: described stake apical cap beam (2) is provided with default pipe fitting (6), the top of described vertical prestressing anchor pole (3) is through presetting pipe fitting (6), also flexibly connecting with stake apical cap beam (2) by anchor head (4) and backing plate (5).
5. the vertical bolt support structure of the taper pile for pattern foundation pit supporting structure according to claim 1, is characterized in that: described stake apical cap beam (2) is Cast-in-situ Beam or precast beam.
6. the vertical bolt support structure of the taper pile for pattern foundation pit supporting structure according to claim 1, 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 |
|---|---|---|---|
| CN201320609111.3U CN203498841U (en) | 2013-09-30 | 2013-09-30 | Inclined pile vertical anchor rod supporting structure used for foundation pit supporting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609111.3U CN203498841U (en) | 2013-09-30 | 2013-09-30 | Inclined pile vertical anchor rod supporting structure used for foundation pit supporting |
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| Publication Number | Publication Date |
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| CN203498841U true CN203498841U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320609111.3U Expired - Fee Related CN203498841U (en) | 2013-09-30 | 2013-09-30 | Inclined pile vertical anchor rod supporting structure used for foundation pit supporting |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485351A (en) * | 2013-09-30 | 2014-01-01 | 中国建筑股份有限公司 | Inclined pile vertical anchor rod supporting structure for foundation pit supporting and construction method thereof |
| CN106351230A (en) * | 2015-06-11 | 2017-01-25 | 叶长青 | Soft soil area basement support construction method |
| CN108149696A (en) * | 2018-02-12 | 2018-06-12 | 山东大学 | The composite supporting construction and construction method that a kind of gib soil nail wall is combined with permanent anti-float anchor rod |
| CN108978687A (en) * | 2018-09-03 | 2018-12-11 | 南华大学 | It is a kind of landslide and slope treatment non-straight vertical anti-slide pile structure and installation method |
-
2013
- 2013-09-30 CN CN201320609111.3U patent/CN203498841U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103485351A (en) * | 2013-09-30 | 2014-01-01 | 中国建筑股份有限公司 | Inclined pile vertical anchor rod supporting structure for foundation pit supporting and construction method thereof |
| CN106351230A (en) * | 2015-06-11 | 2017-01-25 | 叶长青 | Soft soil area basement support construction method |
| CN106351229A (en) * | 2015-06-11 | 2017-01-25 | 叶长青 | Soft soil area basement support structure |
| CN106351230B (en) * | 2015-06-11 | 2018-08-07 | 叶长青 | Soft clay area basement construction method for supporting |
| CN108149696A (en) * | 2018-02-12 | 2018-06-12 | 山东大学 | The composite supporting construction and construction method that a kind of gib soil nail wall is combined with permanent anti-float anchor rod |
| CN108149696B (en) * | 2018-02-12 | 2019-09-13 | 山东大学 | A kind of construction method for the composite supporting construction that gib soil nail wall is combined with permanent anti-float anchor rod |
| CN108978687A (en) * | 2018-09-03 | 2018-12-11 | 南华大学 | It is a kind of landslide and slope treatment non-straight vertical anti-slide pile structure and installation method |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| 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: 20140326 Termination date: 20200930 |