CN217651803U - Based on weak soil deep basal pit single fulcrum high headroom row pile supporting construction - Google Patents
Based on weak soil deep basal pit single fulcrum high headroom row pile supporting construction Download PDFInfo
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- CN217651803U CN217651803U CN202220984255.6U CN202220984255U CN217651803U CN 217651803 U CN217651803 U CN 217651803U CN 202220984255 U CN202220984255 U CN 202220984255U CN 217651803 U CN217651803 U CN 217651803U
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Abstract
The utility model provides a high headroom campshed supporting construction based on weak soil deep basal pit, includes single row pile (1), its characterized in that: the utility model discloses a deep and medium-sized project deep basal pit is strutted to deep soft soil layer's bottom is stretched into perpendicularly in single-row stake (1), for excavation district (2) between two group single-row stake (1) that face each other, be provided with stagnant water between two adjacent single-row stake (1) and only become silted up stake (5), be provided with cell wall reinforced structure (3) on single-row stake (1) are close to the inside wall in excavation district (2), and the inside in excavation district (2) is provided with passive region reinforcement body (4), fixedly between parallel single-row stake (1) top is provided with horizontal interior support (6), the utility model discloses be fit for deep weak soil area large and medium-sized project deep basal pit and strut, reduced the construction degree of difficulty, construction convenience has shortened construction cycle to deep basal pit warp and can obtain effective control.
Description
Technical Field
The utility model relates to a deep basal pit supporting construction especially relates to a high headroom campshed supporting construction based on weak soil deep basal pit single fulcrum, belongs to geotechnical engineering technical field.
Background
At present, construction projects such as fully-buried field stations, rainwater storage tanks, deep water pump houses and comprehensive pipe galleries in medium-large municipal engineering often relate to deep foundation pit engineering, the excavation area of the foundation pit engineering is large, and the excavation depth tends to the development of ultra-deep foundation pits; the underground structure is high in clear space, and a floor slab with uniform elevation is often not used as a support changing condition due to the complex water treatment process; the surrounding environment of the municipal foundation pit is complex and diverse, various municipal public pipelines and various deformation-sensitive structures such as roads, bridges and subway tunnels are often buried, and the deformation control requirement is extremely high; the site selection of the water supply and drainage station is frequently adjacent to rivers and rivers, deep and thick soft soil is distributed frequently, and the engineering geology and hydrogeology conditions are complex; municipal engineering projects often relate to the civil and environmental protection field, and engineering construction often time limit for a project is tight, the task is heavy, economic indicator requires highly.
The construction of underground deep foundation pits often encounters deep soft soil, compared with other common soil bodies, the soft clay has the characteristics of high natural water content, large pore ratio, high compressibility, low permeability, low shear strength, thixotropy, rheological property and the like, and has serious challenges for the design and construction of various underground structure deep foundation pit projects with tight construction period, very complex surrounding environment and extremely strict deformation control of large and medium-sized projects. The technical problem is solved by lacking a supporting structure which is suitable for supporting deep foundation pits of large and medium-sized projects in deep soft soil areas, can effectively control deformation of the deep foundation pits, is convenient to construct and has good safety performance.
Disclosure of Invention
The utility model aims at that the construction degree of difficulty is big when being used for deep weak soil to current supporting construction, adopt traditional supporting mode construction cycle long, engineering cost is higher relatively, deep basal pit warp is difficult to the defect that obtains effective control and not enough, a big-and-middle-sized project deep basal pit support in suitable deep weak soil area is provided, the construction degree of difficulty has been reduced, construction convenience has shortened construction cycle, and deep basal pit warp can obtain effective control one kind based on the high headroom row of weak soil deep basal pit supporting structure.
In order to achieve the above object, the technical solution of the present invention is: the utility model provides a deep basal pit supporting construction that high headroom campshed and single pivot supported based on passive district is consolidated, includes the single row pile, the bottom on deep soft soil layer is stretched into perpendicularly to the single row pile, for excavating the district between two group single row piles that face mutually, is provided with stagnant water between the stake between two adjacent single row piles and ends the silt stake, is provided with cell wall reinforced structure on the inside wall that the single row pile is close to excavating the district, and excavating the inside in district is provided with passive district reinforcement body, supports in the fixed level that is provided with between the single row pile top that parallels.
Furthermore, the single-row piles adopt cast-in-place bored piles, and bottom-falling type waterproof curtains are arranged on the outer sides of the single-row piles.
Furthermore, the passive area reinforcing body is used for reinforcing soft soil in the passive area at the inner side of the pit in a full-cavity reinforcing mode, a wall rib reinforcing mode or a grid reinforcing mode.
Furthermore, the water and silt stopping piles among the piles adopt high-pressure jet grouting piles.
Furthermore, the horizontal inner support adopts a reinforced concrete support structure.
The utility model has the advantages that:
1. the utility model discloses a system is strutted to single fulcrum-high headroom campshed, can reduce the support way number, and the headroom is supported in the increase, thereby promotes the construction operation space and has shortened the time limit for a project greatly, combines the deep basal pit deformation under the control deep weak soil condition that passive area reinforcement can be fine simultaneously.
2. The utility model discloses rational in infrastructure, effectively solved the technical problem that deep soft soil area large and medium-sized project deep basal pit strutted, reduced the construction degree of difficulty, construction convenience has shortened construction cycle to deep basal pit warp can obtain effective control, and the engineering benefit is good, is worth popularizing and applying.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partial top view of fig. 1.
Fig. 3 is the utility model discloses plastic point distribution diagram before the foundation ditch is not consolidated.
Fig. 4 is the utility model discloses plastic point distribution diagram after foundation ditch reinforcement.
In the figure: the method comprises the following steps of single-row piles 1, an excavation area 2, a groove wall reinforcing structure 3, a passive area reinforcing body 4, water and silt stopping piles 5 among piles and a horizontal inner support 6.
Detailed Description
The invention is described in further detail below with reference to the following description of the drawings and the detailed description.
Referring to fig. 1 to 4, the utility model discloses a based on weak soil deep basal pit single fulcrum high headroom campshed supporting construction, including single campshed 1, its characterized in that: the single-row pile 1 stretches into the bottom in deep soft soil layer perpendicularly, for excavating district 2 between two group single-row piles 1 that face each other, be provided with stagnant water between two adjacent single-row piles 1 and end silting pile 5, is provided with cell wall reinforced structure 3 on single-row pile 1 is close to the inside wall in excavation district 2, and the inside in excavation district 2 is provided with passive district reinforcement 4, supports 6 in the fixed level that is provided with between the single-row pile 1 top that parallels.
The single-row piles 1 adopt cast-in-place bored piles, and bottom-falling type waterproof curtains are arranged on the outer sides of the single-row piles 1.
The passive area reinforcing body 4 is used for reinforcing the soft soil of the passive area at the inner side of the pit in a full-cavity reinforcing mode, a wall rib reinforcing mode or a grid reinforcing mode.
And the water-stopping and silt-stopping piles 5 among the piles adopt high-pressure jet grouting piles.
The horizontal inner support 6 adopts a reinforced concrete support structure.
Referring to fig. 1, the utility model discloses adopted the comprehensive system of strutting of "single fulcrum support + high headroom campshed + passive district reinforcement" to deep soft soil layer such as silt matter soft soil layer, in order to improve deep basal pit headroom and deformation control requirement, taken the scheme of strutting that the strong stake propped, specifically be the bottom that stretches into deep soft soil layer perpendicularly with single row of stake 1, single row of stake 1 adopts the bored concrete pile, and the outside of single row of stake 1 is provided with formula stagnant water curtain that falls to the bottom.
Be provided with stagnant water stake 5 between two adjacent single-row piles 1, stagnant water stake 5 adopts the high pressure jet grouting stake between the stake, is provided with cell wall reinforced structure 3 on single-row pile 1 is close to the inside wall in excavation district 2, has reached very good result of use. In addition, horizontal inner supports 6 are fixedly arranged between the tops of the single-row piles 1, and the horizontal inner supports 6 are of reinforced concrete support structures.
An excavation area 2 is arranged between two opposite single-row piles 1, a passive area reinforcing body 4 is arranged inside the excavation area 2, and the passive area reinforcing body 4 is used for reinforcing soft soil in the passive area on the inner side of the pit in a full-cavity reinforcing mode, a wall rib reinforcing mode or a grid reinforcing mode.
The principle of the reinforcement of the passive zone reinforcement 4 is as follows: the passive area, namely the soil body extruded at the inner side of the foundation pit, is reinforced due to the low mechanical index, high water content, high compressibility and low strength of the soft soil, so that the physical and mechanical properties of the soil body can be improved in terms of deformation control, the deformation caused by foundation pit excavation is effectively restrained, and the surrounding environment of the foundation pit is protected; for the aspect of economic and technical benefits, the resistance of soil bodies in a passive area can be effectively increased, so that the stress of the enclosure structure is reduced, the pile length of the pile diameter is reduced, the number of supporting tracks is reduced, the supporting clearance is increased, the purposes of conveniently digging soil, reducing the number of dismantling and replacing supports and conveniently constructing a main structure are achieved, and the construction period is greatly shortened.
As can be seen from the attached drawings 3 and 4, due to the control action of the reinforcing bodies on the two sides of the pit bottom enclosure structure, the expansion and development of the plastic areas of the soil bodies on the two sides of the enclosure structure are inhibited, the range of the plastic points on the pit bottom is obviously reduced after the foundation pit is excavated due to the existence of the reinforcing bodies, and the deformation range of the foundation pit is also controlled in the passive area. The stability of soil bodies on two sides of the enclosure structure is enhanced, and the stability of the enclosure structure and the bottom of the foundation pit is effectively improved.
The above description is for further details of the present invention, and the detailed description is not to be construed as limiting the present invention to these descriptions, and it will be apparent to those skilled in the art that the present invention can be embodied in various forms without departing from the spirit and scope of the present invention.
Claims (5)
1. The utility model provides a high headroom campshed supporting construction based on weak soil deep basal pit single fulcrum, includes single file (1), its characterized in that: the deep soft soil layer's bottom is stretched into perpendicularly in single row stake (1), for excavation district (2) between two group single row stake (1) that face each other, be provided with stagnant water between two adjacent single row stake (1) and end silt stake (5), be provided with cell wall reinforced structure (3) on single row stake (1) is close to the inside wall in excavation district (2), the inside in excavation district (2) is provided with passive district reinforcement body (4), support (6) in the level of being provided with between single row stake (1) top that parallels.
2. The single-fulcrum high-clearance row pile supporting structure based on the soft soil deep foundation pit of claim 1, characterized in that: the single-row piles (1) adopt cast-in-place bored piles, and bottom-falling type waterproof curtains are arranged on the outer sides of the single-row piles (1).
3. The single-fulcrum high-clearance row pile supporting structure based on the soft soil deep foundation pit of claim 1, characterized in that: the passive area reinforcing body (4) is used for reinforcing soft soil in the passive area at the inner side of the pit in a full-cavity reinforcing mode, a wall rib reinforcing mode or a grid reinforcing mode.
4. The single-fulcrum high-clearance row pile supporting structure based on the soft soil deep foundation pit of claim 1, characterized in that: the water and silt stopping piles (5) among the piles adopt high-pressure jet grouting piles.
5. The single-fulcrum high-clearance row pile supporting structure based on the soft soil deep foundation pit as claimed in claim 1, characterized in that: the horizontal inner support (6) adopts a reinforced concrete support structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220984255.6U CN217651803U (en) | 2022-04-27 | 2022-04-27 | Based on weak soil deep basal pit single fulcrum high headroom row pile supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220984255.6U CN217651803U (en) | 2022-04-27 | 2022-04-27 | Based on weak soil deep basal pit single fulcrum high headroom row pile supporting construction |
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| Publication Number | Publication Date |
|---|---|
| CN217651803U true CN217651803U (en) | 2022-10-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220984255.6U Active CN217651803U (en) | 2022-04-27 | 2022-04-27 | Based on weak soil deep basal pit single fulcrum high headroom row pile supporting construction |
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| Country | Link |
|---|---|
| CN (1) | CN217651803U (en) |
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2022
- 2022-04-27 CN CN202220984255.6U patent/CN217651803U/en active Active
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