CN207160019U - A kind of deep pit support protection unit - Google Patents
A kind of deep pit support protection unit Download PDFInfo
- Publication number
- CN207160019U CN207160019U CN201720882499.2U CN201720882499U CN207160019U CN 207160019 U CN207160019 U CN 207160019U CN 201720882499 U CN201720882499 U CN 201720882499U CN 207160019 U CN207160019 U CN 207160019U
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- reinforced concrete
- deep
- deposited
- construction
- pit
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Abstract
Construction project foundation dredging technical field of construction is the utility model is related to, discloses a kind of deep pit support protection unit, including：Interval is embedded in more deposited reinforced concrete piles of surrounding on the inside of deep basal pit to be dug in advance, polylith prefabricated reinforced concrete block is provided with from top to down between the outside of every adjacent two deposited reinforced concrete piles and the edge of deep basal pit, the length of prefabricated reinforced concrete block is more than the spacing of adjacent two deposited reinforced concrete piles, this deep pit support protection unit, so that polylith prefabricated reinforced concrete block forms one of barricade on the inside of more deposited reinforced concrete piles, effective support protection is carried out to periphery geological structure section to end to beginning, excavation can be carried out continuously, the phenomenon that disturbance produces drift sand slump occurs when efficiently solving the concrete spraying support continuous excavation construction of construction, it ensure that the duration, quality and safety.
Description
Technical field
Construction project foundation dredging technical field of construction is the utility model is related to, more particularly to a kind of deep foundation pit support dress
Put.
Background technology
The engineering deep foundation pit construction such as building and municipal administration, is more and more cheated by new construction project land used, due to geology
The many factors such as condition, level of ground water limit, and can not meet the sloping coefficient requirement of design specification, job specfication, it is necessary to
It is safe when thering is design working drawing to carry out the special design of Support of Foundation Pit Excavation to meet deep pit digging.The supporting specialty used at present
The detail design that design is combined using soil nailing reinforced mesh combination reinforced steel concrete stake.Practical example is applied demonstrates in Yang Ling
The sewage collecting pool deep pit digging supporting of the second sewage treatment plant of area.In practice of construction, the coloured surveying engineering company design in northwest
The part structure pit supporting of the second sewage treatment plant of Yangling Area and dewatering project construction drawing in, sewage collecting pool foundation ditch
Depth 21m, level of ground water 6m below+- 0.00 absolute altitude.Double diameter phi 1000mm, axial spacing is used to use δ between stake for 2m
=80, the@200 of φ 6 reinforced mesh injection C20 concrete carries out supporting, and reinforced mesh is anchored on support pile inboard surface,
Form the support system of overall excavated section.In practice of construction, due to level of ground water reduce after, original gravel, boulder bed from
Structure, changed because water level reduces, form the very poor particle loose type structure of the viscous extensional of no water filling.Mechanical equivalent of light excavation people
Work clear side, mesh sheet installation, anchor bar being when hammering into, spraying concrete technology construction activities, the excavated section to need reinforcement, slightly
After disturbing just large area slump, or jetting cement supporting, when carrying out new cutting depth, due to disturbance, jetting cement is caused to protect
Sheath inner vertical stream leaks, and forms branch sheath and is separated with protection section, causes the space of very big spacing, lose the effect of supporting,
Form significant safety hazards.
Utility model content
The utility model provides a kind of deep pit support protection unit, can solve above mentioned problem of the prior art.
The utility model provides a kind of deep pit support protection unit, including：Interval is embedded on the inside of deep basal pit to be dug in advance
More deposited reinforced concrete piles of surrounding, per the outside of adjacent two deposited reinforced concrete piles and the edge of deep basal pit
Between be provided with polylith prefabricated reinforced concrete block from top to down, the length of prefabricated reinforced concrete block is mixed more than adjacent two reinforcing bars
Coagulate the spacing of native bored concrete pile.
Further, the cross section of the more deposited reinforced concrete piles for circle, deposited reinforced concrete pile it is straight
Footpath is 1.0m, and the spacing of adjacent two deposited reinforced concrete piles is 2.0m.
Compared with prior art, the beneficial effects of the utility model are：
The utility model is embedded in more deposited reinforced concrete piles of deep basal pit surrounding to be dug by being spaced in advance, plays
Supporting role, by setting prefabricated reinforced concrete between adjacent two deposited reinforced concrete piles and deep basal pit edge
Block, pass through the gravel or cobble between adjacent two deposited reinforced concrete piles that gradually scoop away with prefabricated reinforced concrete block bottom
Layer, prefabricated reinforced concrete block under gravity, gradually sink, freely fall to the base substrate do not excavated, from top not
The quantity of disconnected increase prefabricated reinforced concrete block so that polylith prefabricated reinforced concrete block is in more deposited reinforced concrete piles
Side forms one of barricade, carries out effective support protection to periphery geological structure section to end to beginning, can be carried out continuously foundation ditch and open
Excavation construction, the phenomenon that disturbance produces drift sand slump occurs when efficiently solving the concrete spraying support continuous excavation construction of construction,
It ensure that duration, quality and safety.
Brief description of the drawings
Fig. 1 is a kind of structural representation of deep pit support protection unit longitudinal cross-section provided by the utility model.
Fig. 2 is a kind of structural representation in deep foundation pit support device lateral section provided by the utility model.
Description of reference numerals：
1- deep basal pits, 2- deposited reinforced concrete piles, 3- prefabricated reinforced concrete blocks.
Embodiment
Below in conjunction with the accompanying drawings, an embodiment of the present utility model is described in detail, it is to be understood that this
The protection domain of utility model is not limited by embodiment.
As depicted in figs. 1 and 2, a kind of deep pit support protection unit that the utility model embodiment provides, including：Interval in advance
More deposited reinforced concrete piles 2 of the inner side surrounding of deep basal pit 1 to be dug are embedded in, per adjacent two deposited reinforced concrete piles 2
Outside and deep basal pit 1 edge between be provided with polylith prefabricated reinforced concrete block 3, prefabricated reinforced concrete from top to down
The length of block 3 is more than the spacing of adjacent two deposited reinforced concrete piles 2.
Further, the cross section of the more deposited reinforced concrete piles 2 is circle, deposited reinforced concrete pile 2
A diameter of 1.0m, the spacing of adjacent two deposited reinforced concrete piles 2 is 2.0m.
The course of work and support principle：In digging process, by between two neighboring deposited reinforced concrete pile 2 and position
After gravel or boulder bed between the two neighboring outside of deposited reinforced concrete pile 2 and the edge of deep basal pit 1 scoop away,
Outside per adjacent two deposited reinforced concrete piles 2 and one piece of precast reinforced coagulation of placement between the edge of deep basal pit 1
Soil block 3, with the depth increase of the excavation of deep basal pit 1, the gravel and boulder bed of the bottom of prefabricated reinforced concrete block 3 are scooped away,
Prefabricated reinforced concrete block 3 under self gravitation effect along between deep basal pit edge and deposited reinforced concrete pile 2 to sinking, from
The base substrate do not excavated is fallen on by down, when the difference in height between the prefabricated reinforced concrete block 3 on top and ground is more than prefabricated
During 3 half height of reinforced concrete block, increase by one piece between adjacent two deposited reinforced concrete piles 2 and edge
Prefabricated reinforced concrete block 3, as the cutting depth of deep basal pit 1 continues to increase, the quantity of prefabricated reinforced concrete block 3 gradually increases
Add, under the collective effect of deposited reinforced concrete pile 2 and polylith prefabricated reinforced concrete block 3, to the beginning to end to periphery geology
Structure section carries out effective support protection, can be carried out continuously the excavation construction of deep basal pit 1, efficiently solve gunite concrete branch
Protect and the phenomenon that disturbance produces drift sand slump occurs in continuous excavation construction, ensure that duration and quality safety.
As shown in Fig. 2 the spacing of adjacent two deposited reinforced concrete piles 2 is d, the length of prefabricated reinforced concrete block 3
For l, l ＞ d so that deposited reinforced concrete pile 2 collectively constitutes porotective wall with prefabricated reinforced concrete block 3, when precast reinforced
When the length l of concrete block 3 is equal with the distance between the center of circle of adjacent two deposited reinforced concrete piles, polylith is precast reinforced
Concrete block 3 forms alone porotective wall, and deposited reinforced concrete pile 2 plays a supportive role.
The height of deposited reinforced concrete pile 2 is more than the depth of deep basal pit 1 to be dug, it is ensured that deposited reinforced concrete pile 2
Ballistic support acts on.
It is gravel, cobble structure in geological structure, and groundwater level depth is than shallower, the limitation of surrounding enviroment condition, does not have
When there are enough excavation sloping coefficients, when carrying out deep foundation pit construction, the support technology of wall is formed using prefabricated reinforced concrete block,
Can solve because of artificial degradation level of ground water, change natural sand gravel and cobble structural texture system in the range of foundation pit construction, propping up
Fender pile is excavated after being formed, and in reinforced mesh concrete spraying support construction, careless slightly disturbance, foundation ditch week will occur
Side gravel, the leakage slump of pebbly structure layer section Vertical Flow, formed concrete spraying support layer and supporting emaciated face from, cause space,
Then big face, large volume slump are caused, serious accident occurs.
Disclosed above is only several specific embodiments of the present utility model, and still, the utility model embodiment is not office
It is limited to this, the changes that any person skilled in the art can think of should all fall into the scope of protection of the utility model.
Claims (2)
- A kind of 1. deep pit support protection unit, it is characterised in that including：Interval is embedded in surrounding on the inside of deep basal pit to be dug (1) in advance More deposited reinforced concrete piles (2), four of outside and deep basal pit (1) per adjacent two deposited reinforced concrete piles (2) Polylith prefabricated reinforced concrete block (3) is provided between circumferential edges from top to down, the length of prefabricated reinforced concrete block (3) is more than The spacing of adjacent two deposited reinforced concrete piles (2).
- 2. deep pit support protection unit as claimed in claim 1, it is characterised in that the more deposited reinforced concrete piles (2) Cross section for circle, a diameter of 1.0m of deposited reinforced concrete pile (2), adjacent two deposited reinforced concrete piles (2) Spacing is 2.0m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720882499.2U CN207160019U (en) | 2017-07-19 | 2017-07-19 | A kind of deep pit support protection unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720882499.2U CN207160019U (en) | 2017-07-19 | 2017-07-19 | A kind of deep pit support protection unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207160019U true CN207160019U (en) | 2018-03-30 |
Family
ID=61713446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720882499.2U Expired - Fee Related CN207160019U (en) | 2017-07-19 | 2017-07-19 | A kind of deep pit support protection unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207160019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846653A (en) * | 2021-11-17 | 2021-12-28 | 广州市市政工程试验检测有限公司 | Prefabricated test block back-pressure foundation pit supporting system and construction method |
-
2017
- 2017-07-19 CN CN201720882499.2U patent/CN207160019U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113846653A (en) * | 2021-11-17 | 2021-12-28 | 广州市市政工程试验检测有限公司 | Prefabricated test block back-pressure foundation pit supporting system and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20180330 Termination date: 20180719 |