CN203498842U - Pile beam vertical anchor supporting system used for foundation pit supporting - Google Patents
Pile beam vertical anchor supporting system used for foundation pit supporting Download PDFInfo
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- CN203498842U CN203498842U CN201320609577.3U CN201320609577U CN203498842U CN 203498842 U CN203498842 U CN 203498842U CN 201320609577 U CN201320609577 U CN 201320609577U CN 203498842 U CN203498842 U CN 203498842U
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- slope protection
- foundation pit
- anchor pole
- protection pile
- vertical prestressing
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Abstract
Disclosed is a pile beam vertical anchor supporting system used for foundation pit supporting. The pile beam vertical anchor supporting system comprises a row of slope protection piles, a pile top beam and anchor rods, wherein the slope protection piles are arranged at the edge of a foundation pit, and the bottoms of the slope protection piles stretch into the soil layer below a substrate. The anchor rods comprise a row of vertical pre-stressed anchor rods, and the vertical pre-stressed anchor rods are arranged in the stable ground layer outside the slope protection piles, are inserted into the ground outside the slope protection piles and are anchored into the stable ground layer outside the slope protection piles; the pile top beam is a lattice beam, the side, close to the foundation pit, of the lattice beam is connected with the tops of the slope protection piles in a rigid mode, and the side, away from the foundation pit, of the lattice beam is connected with the upper portions of the vertical pre-stressed anchor rods in a flexible mode. The supporting system is particularly suitable for adjacent existing building foundation pits with limited underground space, has obvious advantages in adjacent existing building foundation pit supporting, is good in supporting effect, and has 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 the side slope the having 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.
(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 the existing next-door neighbour's existing building of having constructed is all not satisfactory, slope deforming is larger, this type of foundation ditch accident happens occasionally, particularly top, slope distortion, so for the defect of 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, 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 perpendicular anchor support system of stake beam 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: a kind of perpendicular anchor support system of stake beam for pattern foundation pit supporting structure, include slope protection pile, stake apical cap beam and anchor pole, described slope protection pile is provided with a row at margin of foundation pit place, and 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 provided with a row in the good ground in slope protection pile outside, and vertical prestressing anchor pole inserts and is anchored in the good ground in slope protection pile outside by the ground in slope protection pile outside; Described stake apical cap beam is lattice girder, and lattice girder is rigidly connected near a side of foundation ditch and the top of slope protection pile, and lattice girder flexibly connects away from a side of foundation ditch and the top of vertical prestressing anchor pole.
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 lattice girder, can be provided with default pipe fitting, the top of described vertical prestressing anchor pole flexibly connects through default pipe fitting and by anchor head and backing plate and lattice girder.
Described lattice girder can be Cast-in-situ Beam or precast beam.
Described slope protection pile can be square slope protection pile or circular slope protection pile.
Compared with prior art the utlity model has following characteristics and beneficial effect: the utility model arranges vertical prestressing anchor pole in interval in the good ground in slope protection pile outside, and vertical prestressing anchor pole inserts and is anchored in good ground by the ground in slope protection pile outside, the underground space that first design can reduce to take like this, expand the scope of application and (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, secondly can make full use of the 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 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 reduce top, slope distortion (distortion of stake top), improves the pile body force-bearing situation of slope protection pile, improves the cantilever height of slope protection pile, so 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 perspective view of the present utility model.
Fig. 2 is facade structures schematic diagram of the present utility model.
Fig. 3 is the schematic top plan view of Fig. 2.
Fig. 4 is the plan structure schematic diagram at the connected node place of lattice girder and vertical prestressing anchor pole.
Fig. 5 is the facade structures schematic diagram at the connected node place of lattice girder and vertical prestressing anchor pole.
Reference numeral: soil layer under the ground in 1-slope protection pile, 2-lattice girder, 3-vertical prestressing anchor pole, 4-backing plate, the default pipe fitting of 5-, 6-anchor head, 7-existing building basis, 8-good ground, 9-slope protection pile outside, 10-substrate.
The specific embodiment
Embodiment is referring to shown in Fig. 1-5, and this perpendicular anchor of stake beam for pattern foundation pit supporting structure (English of the perpendicular anchor of stake beam is pile beam vertical anchor, is called for short PBVA) support system, includes slope protection pile 1, stake apical cap beam and anchor pole.Described slope protection pile 1 is provided with a row at margin of foundation pit place, and the bottom of slope protection pile 1 stretches under substrate in soil layer 10, and concrete length is definite by designing according to the soil layer situation at position of living in.Slope protection pile 1 adopts general stake type at present, such as steel sheet pile, reinforced concrete pile or default pipe fitting concrete pile etc.Slope protection pile 1 can be square slope protection pile, circular slope protection pile or other special-shaped slope protection pile.In the present embodiment, slope protection pile 1 is plumb pile, and in other embodiments, slope protection pile 1 can be also taper pile.
Described anchor pole comprises vertical prestressing anchor pole 3, and vertical prestressing anchor pole 3 is provided with a row in the good ground 8 in slope protection pile outside, and vertical prestressing anchor pole 3 inserts and is anchored in the good ground 8 in slope protection pile outside by the ground 9 in slope protection pile outside; 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 is lattice girder 2, and lattice girder 2 is rigidly connected near a side of foundation ditch and the top of slope protection pile 1, and lattice girder 2 flexibly connects away from a side of foundation ditch and the top of vertical prestressing anchor pole 3.The height that the top of described slope protection pile 1 (stake top) and main muscle thereof stretch into lattice girder 2 need meet national sector standard, as 50mm.
In the present embodiment, lattice girder 2 is provided with default pipe fitting 5, and the top of vertical prestressing anchor pole 3 flexibly connects with lattice girder 2 through default pipe fitting 5 and by anchor head 6 and backing plate 4.
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 perpendicular anchor support system of stake beam of pattern foundation pit supporting structure, conventional anchor pole and waist rail can also be optionally set.
The construction method of the described perpendicular anchor support system of stake beam for foundation ditch (being especially close to existing building foundation ditch) supporting, its step is as follows.
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 designing and calculating, 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 stake beam for pattern foundation pit supporting structure erects anchor support system, include slope protection pile (1), stake apical cap beam and anchor pole, described slope protection pile (1) is provided with a row at margin of foundation pit place, and the bottom of slope protection pile (1) stretches 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 provided with a row in the good ground (8) in slope protection pile outside, and vertical prestressing anchor pole (3) inserts and is anchored in the good ground (8) in slope protection pile outside by the ground (9) in slope protection pile outside;
Described stake apical cap beam is lattice girder (2), and lattice girder (2) is rigidly connected near a side of foundation ditch and the top of slope protection pile (1), and lattice girder (2) flexibly connects away from a side of foundation ditch and the top of vertical prestressing anchor pole (3).
2. the perpendicular anchor support system of stake beam 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 perpendicular anchor support system of stake beam 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 stake beam for pattern foundation pit supporting structure according to claim 1 erects anchor support system, it is characterized in that: described lattice girder (2) is provided with default pipe fitting (5), the top of described vertical prestressing anchor pole (3) is through presetting pipe fitting (5), also flexibly connecting with lattice girder (2) by anchor head (6) and backing plate (4).
5. the perpendicular anchor support system of stake beam for pattern foundation pit supporting structure according to claim 1, is characterized in that: described lattice girder (2) is Cast-in-situ Beam or precast beam.
6. the perpendicular anchor support system of stake beam for pattern foundation pit supporting structure according to claim 1, is characterized in that: described slope protection pile (1) is square slope protection pile or circular slope protection pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609577.3U CN203498842U (en) | 2013-09-30 | 2013-09-30 | Pile beam vertical anchor supporting system used for foundation pit supporting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320609577.3U CN203498842U (en) | 2013-09-30 | 2013-09-30 | Pile beam vertical anchor supporting system used for foundation pit supporting |
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| Publication Number | Publication Date |
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| CN203498842U true CN203498842U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320609577.3U Expired - Fee Related CN203498842U (en) | 2013-09-30 | 2013-09-30 | Pile beam vertical anchor supporting system used for foundation pit supporting |
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| CN (1) | CN203498842U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469803A (en) * | 2013-09-30 | 2013-12-25 | 中国建筑股份有限公司 | Pile beam vertical anchor support system used for supporting foundation pit and construction method of pile beam vertical anchor support system |
| CN105756070A (en) * | 2016-05-04 | 2016-07-13 | 山东大学 | Assembled type foundation pit supporting and protecting structure system based on prefabricated members |
| CN110004938A (en) * | 2019-03-27 | 2019-07-12 | 中冶成都勘察研究总院有限公司 | A kind of foundation pit side-wall structural strengthening suspension device |
-
2013
- 2013-09-30 CN CN201320609577.3U patent/CN203498842U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469803A (en) * | 2013-09-30 | 2013-12-25 | 中国建筑股份有限公司 | Pile beam vertical anchor support system used for supporting foundation pit and construction method of pile beam vertical anchor support system |
| CN105756070A (en) * | 2016-05-04 | 2016-07-13 | 山东大学 | Assembled type foundation pit supporting and protecting structure system based on prefabricated members |
| CN105756070B (en) * | 2016-05-04 | 2018-01-12 | 山东大学 | A kind of Fabricated Structure for Support of Excavation system based on prefabricated components |
| CN110004938A (en) * | 2019-03-27 | 2019-07-12 | 中冶成都勘察研究总院有限公司 | A kind of foundation pit side-wall structural strengthening suspension device |
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| 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: 20190930 |