CN205259193U - A splayed supporting construction for foundation ditch engineering - Google Patents
A splayed supporting construction for foundation ditch engineering Download PDFInfo
- Publication number
- CN205259193U CN205259193U CN201520957490.4U CN201520957490U CN205259193U CN 205259193 U CN205259193 U CN 205259193U CN 201520957490 U CN201520957490 U CN 201520957490U CN 205259193 U CN205259193 U CN 205259193U
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- stake
- hypsokinesis
- campshed
- supporting construction
- splayed
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Abstract
The utility model relates to a splayed supporting construction for foundation ditch engineering, including preceding campshed, back campshed and rigid connection campshed and the back company's roof beam between the campshed in the front: its characterized in that: preceding campshed is become by one row of pile cluster that leans forward, back campshed is become by one row of hypsokinesis pile cluster, lean forward the stake with the hypsokinesis stake is the splayed. The utility model has the advantages of lean forward stake and the inclination of hypsokinesis stake can reduce greatly the effect lean forward and the hypsokinesis stake on the soil pressure, can reduce its cross -section and arrangement of reinforcement greatly, the stake, hypsokinesis stake and guan liang of leaning forward forms the system of strutting of stable similar gravity type barricade rather than the interior soil body, subdues the possibility that underground structure topples, enlarged the smooth arc radius of whole circular sliding, has reduced the possibility that the hole end and wall subsoil were personally experienced sth. Part of the body and is swelled greatly, has increased supporting construction's stability.
Description
Technical field
The utility model relates to a kind of foundation pit supporting construction.
Background technology
In building foundation pit supporting design and construction, common are the supportings such as (compound) plate brad supporting, stake (wall) anchor, stake (wall) supportPattern or its combination form. In recent years, along with the quickening of urban construction process, in urban district, site coverage is more and more high, Hen DuojianBuild all and seize every opportunity, on existing building side or build very nearby apart from existing building. But, making full use of groundFollowing problems, have been caused again: 1, the excavation slope of new building next-door neighbour (or red line district, existing building basis when in the spaceTerritory, underground obstacle etc.), therefore foundation ditch can not take to put slope excavation, can not carry out again plate brad supporting; 2, due to existing buildingThe restriction on basis (or red line region, underground obstacle etc.), makes soil body width limited, so taking pile-anchor retaining or joist anchor to prop upWhile protecting, anchor pole angle is often larger, and supporting effect is poor, and the excavation slope even having is difficult to lay anchor pole; 3, inner support schemeAlthough can meet the requirement of the foundation pit stope support to next-door neighbour's existing building, its implementation cost is high, operation is loaded down with trivial details, constructionDuration is long and also affect serious on earth excavation and main structure body construction.
Therefore, for fear of above variety of issue, other or carry out foundation ditch very nearby apart from existing building at existing buildingWhen excavation, alternative supporting type also has Retaining Structure with Double-row Piles, but existing Retaining Structure with Double-row Piles is due to pile bodyVertical with soil layer, after stake, soil pressure is larger, so have the shortcoming that resistance to overturning is poor, supporting effect is poor.
Utility model content
The purpose of this utility model is to provide a kind of splayed supporting construction for base pit engineering, solve existing twoThe technical problem that Row Piles Supporting Structure resistance to overturning is poor, supporting effect is poor.
For achieving the above object, the utility model adopts following technical scheme:
For a splayed supporting construction for base pit engineering, include front campshed, rear campshed and be rigidly attached to front rowCoupling beam between stake and rear campshed: it is characterized in that: described front campshed is leaned forward and formed by a row, described rear campshed by a row afterIncline stake composition, described in the stake of leaning forward be splayed with described hypsokinesis stake.
Preferably, the top rake of stake of leaning forward described in is 95 degree～120 degree.
Preferably, the back rake angle of described hypsokinesis stake is 95 degree～120 degree.
Preferably, described coupling beam is lattice girder, by front stake apical cap beam, rear stake apical cap beam and be rigidly attached to front stake apical capStake top linking beam composition between beam and rear stake apical cap beam.
Preferably, described in the lean forward top of stake stretch in front stake apical cap beam, the top of hypsokinesis stake stretches to rear stake apical capLiang Zhong.
Preferably, a bottom of leaning forward described in extend under hole in soil layer.
Preferably, described in, lean forward stake and described hypsokinesis stake be monolithic reinforced concrete structure.
Preferably, described in lean forward stake cross section be circle or rectangle, the cross section of described hypsokinesis stake is circle or rectangle.
Compared with prior art the utlity model has following characteristics and beneficial effect:
1, lean forward stake and the inclination angle of hypsokinesis stake can reduce to act on the soil pressure leaning forward in stake and hypsokinesis stake greatly, can reduceIts cross section and arrangement of reinforcement, thus construction cost reduced.
2, lean forward stake, hypsokinesis stake and Guan Liang thereof and its interior soil body forms the support system of stable similar Gravity Retaining Wall,Subdue the possibility that foundation pit supporting construction topples, expanded the slip circle radius of overall Circular Sliding, at the bottom of greatly having reduced hole and at the bottom of wallThe possibility of uplift of soil. Compared with conventional supporting construction, the utility model can reduce soil pressure after wall, increases supporting constructionStability.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Fig. 1 is that structure master of the present utility model looks schematic diagram.
Fig. 2 is structure schematic top plan view of the present utility model.
Reference numeral: 1-lean forward stake apical cap beam after stake apical cap beam before stake, 2-hypsokinesis stake, 3-coupling beam, 3.1-, 3.2-,3.3-stake top linking beam, 4-straight line sliding surface, 5-soil layer, 6-existing building basis, 7-slip wedge are (for calculating soil pressurePower), a-top rake, b-back rake angle.
Detailed description of the invention
Embodiment is referring to shown in Fig. 1, Fig. 2, this splayed supporting construction for base pit engineering, include front campshed,Rear campshed and be rigidly attached to front campshed and rear campshed between coupling beam 3, it is characterized in that: described front campshed is by the row stake of leaning forward1 composition, described rear campshed is made up of row's hypsokinesis stake 2, described in lean forward stake 1 with described hypsokinesis stake 2 be splayed.
In the present embodiment, described in lean forward that 1 top rake a is larger than the back rake angle b of hypsokinesis stake 2 in stake.
In the present embodiment, described in stake 1 the top rake a that leans forward be 95 degree～120 degree.
In the present embodiment, the back rake angle b of described hypsokinesis stake 2 is 95 degree～120 degree.
In the present embodiment, described coupling beam 3 is lattice girder, by front stake apical cap beam 3.1, rear stake apical cap beam 3.2 and rigid connectingThe stake top linking beam 3.3 being connected between front stake apical cap beam and rear stake apical cap beam forms.
In the present embodiment, described in stake 1 the top of leaning forward stretch in front stake apical cap beam 3.1, the top of hypsokinesis stake 2 stretches toIn rear stake apical cap beam 3.2.
In the present embodiment, described in stake 1 bottom of leaning forward extend under hole in soil layer 5.
In the present embodiment, described in lean forward stake 1 and described hypsokinesis stake 2 are monolithic reinforced concrete structures.
In the present embodiment, described in stake 1 the cross section of leaning forward be circle or rectangle, the cross section of described hypsokinesis stake 2 is circle or squareShape.
The stake footpath that described lean forward stake 1 and hypsokinesis stake 2 are concrete and stake are long is in the situation that considering hypsokinesis stake 2, according to soil layer 5Character, every stability requirement and internal force, distortion calculative determination;
Described lean forward stake 1 and stake top and the main muscle thereof of hypsokinesis stake 2 stretch into height in hat back timber 4 and meet related specifications and wantAsk.
Cross section and the arrangement of reinforcement of described hypsokinesis stake 2, lean forward stake 1 and coupling beam 3 thereof should pass through internal force calculative determination, and should meet phaseClose the requirement of specification structure.
The effect of described hypsokinesis stake 2 mainly contains three aspects:: cut off straight line sliding surface 4 and slip wedge 7(and be used for calculating soil pressurePower), the soil pressure of the stake 1 that reduces to lean forward; Increase slip circle radius, increase supporting construction resistance to overturning; Hypsokinesis stake 2 can resistPull out, the support system with the stable similar Gravity Retaining Wall of stake 1 formation that leans forward, improves pattern foundation pit supporting structure degree of safety.
Described effect of leaning forward stake 1 mainly contains: stake turns forward, and can reduce soil pressure; Block and lean forward between stake and hypsokinesis stakeSoil layer 5, ensure the carrying out smoothly of excavation of foundation pit.
This novel splayed supporting construction can be implemented by following steps:
The first, execute pile-up point;
The second, stake and hypsokinesis pile driving construction lean forward;
The 3rd, abolish the pile crown of lean forward stake and hypsokinesis stake;
The 4th, arrange main muscle and the stirrup of coupling beam, build coupling beam;
The 5th, wait for that pile concrete and coupling beam concrete form intensity;
The 6th, pit earthwork excavation.
Content described in this description embodiment be only to utility model design realize enumerating of pattern, this practicality is newlyThe protection domain of type should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also andConceive the equivalent technologies means that can expect according to the utility model in those skilled in the art.
Claims (8)
1. for a splayed supporting construction for base pit engineering, include front campshed, rear campshed and be rigidly attached to front campshedAnd the coupling beam (3) between rear campshed: it is characterized in that: described front campshed by a row lean forward stake (1) form, described rear campshed is by oneRow's hypsokinesis stake (2) composition, described in lean forward stake (1) and described hypsokinesis stake (2) be splayed.
2. a kind of splayed supporting construction for base pit engineering according to claim 1, is characterized in that: described in lean forwardThe top rake (a) of stake (1) is 95 degree～120 degree.
3. a kind of splayed supporting construction for base pit engineering according to claim 1, is characterized in that: described hypsokinesisThe back rake angle (b) of stake (2) is 95 degree～120 degree.
4. a kind of splayed supporting construction for base pit engineering according to claim 1, is characterized in that: described coupling beam(3) be lattice girder, by front stake apical cap beam (3.1), rear stake apical cap beam (3.2) and be rigidly attached to front stake apical cap beam and push up with rear stakeStake top linking beam (3.3) composition between hat beam.
5. a kind of splayed supporting construction for base pit engineering according to claim 4, is characterized in that: described in lean forwardThe top of stake (1) stretches in front stake apical cap beam (3.1), and the top of hypsokinesis stake (2) stretches in rear stake apical cap beam (3.2).
6. a kind of splayed supporting construction for base pit engineering according to claim 1, is characterized in that: described in lean forwardStake (1) bottom extend in the beneath soil layer (5) in hole.
7. a kind of splayed supporting construction for base pit engineering according to claim 1, is characterized in that: described in lean forwardStake (1) and described hypsokinesis stake (2) are monolithic reinforced concrete structures.
8. a kind of splayed supporting construction for base pit engineering according to claim 1, is characterized in that: described in lean forwardThe cross section of stake (1) is circle or rectangle, and the cross section of described hypsokinesis stake (2) is circle or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520957490.4U CN205259193U (en) | 2015-11-26 | 2015-11-26 | A splayed supporting construction for foundation ditch engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520957490.4U CN205259193U (en) | 2015-11-26 | 2015-11-26 | A splayed supporting construction for foundation ditch engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205259193U true CN205259193U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520957490.4U Expired - Fee Related CN205259193U (en) | 2015-11-26 | 2015-11-26 | A splayed supporting construction for foundation ditch engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205259193U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366290A (en) * | 2017-07-27 | 2017-11-21 | 天津大学 | Foundation pit supporting method and raked pile |
| CN107630456A (en) * | 2017-07-27 | 2018-01-26 | 天津大学 | Foundation pit supporting method and raked pile |
| CN107740419A (en) * | 2017-07-27 | 2018-02-27 | 天津大学 | Foundation pit supporting method and raked pile |
-
2015
- 2015-11-26 CN CN201520957490.4U patent/CN205259193U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366290A (en) * | 2017-07-27 | 2017-11-21 | 天津大学 | Foundation pit supporting method and raked pile |
| CN107630456A (en) * | 2017-07-27 | 2018-01-26 | 天津大学 | Foundation pit supporting method and raked pile |
| CN107740419A (en) * | 2017-07-27 | 2018-02-27 | 天津大学 | Foundation pit supporting method and raked pile |
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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: 20160525 Termination date: 20191126 |