CN210315567U - Integral back cover system of basement pit bottom in muddy soft soil area - Google Patents
Integral back cover system of basement pit bottom in muddy soft soil area Download PDFInfo
- Publication number
- CN210315567U CN210315567U CN201920837987.0U CN201920837987U CN210315567U CN 210315567 U CN210315567 U CN 210315567U CN 201920837987 U CN201920837987 U CN 201920837987U CN 210315567 U CN210315567 U CN 210315567U
- Authority
- CN
- China
- Prior art keywords
- basement
- bed course
- soft soil
- layer
- cushion layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Foundations (AREA)
Abstract
The utility model discloses an integral back cover system in soft soil district basement well bottom of silt matter, its characterized in that: the whole bottom of basement foundation ditch is pour and is equipped with the bed course, the inside reinforcing bar net that is used for strengthening the bed course rigidity that is equipped with of bed course, the below of bed course is equipped with the cushion cap basis, reinforcing bar net in the cushion cap basis is long portion in advance and is connected with the reinforcing bar net in the bed course, the top of cushion cap basis is equipped with the building cushion cap and is linked into an organic whole with the bed course. The utility model discloses utilize cushion cap and concrete cushion layer to form a rigidity whole, prevented that fluidity silt from causing the disturbance and destroying at the bottom of the hole, avoid appearing the foundation ditch and cave down, the uplift at the bottom of the hole, ensure basement foundation ditch construction safety, improve the efficiency of construction in the soft soil zone of foundation ditch silt.
Description
Technical Field
The utility model relates to a foundation ditch construction technical field, more specifically are integral back cover system at bottom of soft soil zone basement hole of silt matter.
Background
A large amount of silt soft soil is distributed in the disastrous geology of coastal areas in south China, foundation pit earthwork is a thick silt layer and a gravel layer, the silt layer has the characteristics of saturation, flowing and instability, and confined water exists in the holes of the gravel layer; the environment is complex, great difficulty is brought to basement earthwork excavation, especially pit-in-pit earthwork excavation, and the phenomena of foundation pit collapse and pit bottom uplift are caused by the characteristics of fluidity of mucky soil to the slope side and the pit bottom of the foundation pit at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an integral back cover system at bottom of soft soil zone basement of silt matter for the mobility of solving silt matter soil causes the foundation ditch to collapse, the problem of the uplift of bottom of the pit.
In order to realize above-mentioned purpose the utility model provides an integral back cover system at soft soil zone basement well bottom of silt matter, including taking to establish the Larsen formula steel sheet pile who is used for protecting the basement foundation ditch all around at the basement foundation ditch, its characterized in that: the whole bottom of basement foundation ditch is pour and is equipped with the bed course, the inside reinforcing bar net that is used for strengthening the bed course rigidity that is equipped with of bed course, the below of bed course is equipped with the cushion cap basis, reinforcing bar net in the cushion cap basis is long portion in advance and is connected with the reinforcing bar net in the bed course, the top of cushion cap basis is equipped with the cushion cap and links into an organic whole with the bed course.
As an optimized technical scheme of the utility model, pour the concrete of bed course mixes the early strength agent who is used for strengthening the bed course hardness.
As a preferred technical scheme of the utility model, the thickness of bed course is 500 mm.
As an optimized technical scheme of the utility model, the one deck is laid to the bottom of bed course and is used for strengthening the gravel layer of soft soil layer hardness.
As an optimized technical scheme of the utility model, the position reservation that the bed course corresponds with the cushion cap basis has the slotted hole that is used for pouring the building cushion cap.
As a preferred technical scheme of the utility model, pile in the top of bed course after the bed course is pour and is accomplished and press the soil sack layer that has the enhancement bed course pressure to prevent the foundation ditch uplift.
As an optimal technical scheme of the utility model, the soil bag bulldozes highly is 1m, and the soil bag layer is piled after bedding concrete pressure reaches 1.2mpa and is pressed.
As an optimal technical scheme of the utility model, the concrete of pouring cushion cap basis and cushion cap usefulness uses waterproof concrete, and mixes early strength agent.
Compared with the prior art, the utility model provides a possess following beneficial effect: the utility model discloses an innovation point lies in that make full use of peripheral cushion cap and hole well thickening concrete cushion layer and form a rigidity wholly, has prevented the disturbance that basement construction stage mobility mucky soil caused to the bottom of a pit and has destroyed, and the peripheral form that adopts steel sheet pile plus gusset of basement has guaranteed the whole structure safety of strutting of basement construction stage. The utility model discloses a be applicable to the excavation of the deep basal pit well soil body in southern silt soft soil area.
Drawings
FIG. 1 is a plan view of the utility model of a bearing platform pouring;
FIG. 2 is a sectional view of the construction of the cushion layer and the bearing platform foundation of the present invention;
FIG. 3 is a cross-sectional view of the cushion layer and the bearing platform of the present invention;
in the figure: 1. the steel sheet pile, 2. steel shotcrete, 3. bed course, 4. grit layer, 5. cushion cap basis, 6. cushion cap.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments, it is to be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.
The utility model discloses a schematic diagram is shown as figure 1 ~ 3, an integral back cover system at soft soil district basement well end of silt, including taking and establishing Larsen formula steel sheet pile 1 that is used for protecting the basement foundation ditch all around at the basement foundation ditch, pour at the bed course 3 of basement foundation ditch bottom and with bed course 3 cushion 6 that fuses.
The Larsen type steel sheet pile 1 is erected on the periphery of a basement construction area and used for protecting the side wall of the pit during excavation of foundation pit soil, and steel supports 2 used for reinforcing a protection system are further arranged at four corners of the side wall of the basement foundation pit.
The whole foundation ditch bottom of basement is pour and is equipped with bed course 3, lays gravel layer 4 on the soft soil layer of basement foundation ditch bottom earlier before 3 pouring constructions on the bed course and is used for strengthening the weak soil of foundation ditch bottom to constructor's work and construction equipment's use are convenient for.
The reinforcing mesh for reinforcing the hardness of the whole cushion layer 3 is bound and arranged in the cushion layer 3, the thickness of concrete of the building cushion layer 3 is 500mm, the strength of the concrete for pouring the cushion layer 3 is C20, and the concrete for pouring the cushion layer 3 is added with an early strength agent for reinforcing the rigidity of the concrete of the cushion layer 3, so that the effect of preventing the rising of the flowing sludge is more obvious.
The 3 construction of pouring of bed course in blocks, when the basement soil body whenever dig to the foundation ditch design degree of depth, accomplish the 3 construction of concrete bed course that are used for preventing the foundation ditch uplift to the reinforcing bar net four sides in the 3 bed courses of every pouring all should be 0.5 ~ 1m in advance, and the bed course 3 of whole basement bottom of being convenient for links into a whole, ensures the wholeness of bed course 3, strengthens the quality of protection foundation ditch bottom.
And after the cushion layer 3 is poured, a soil bag layer for reinforcing the cushion layer 3 to prevent the foundation pit from bulging is stacked above the cushion layer 3. The pushing height of the soil bag is 1m, and the soil bag layer is piled up after the concrete pressure of the cushion layer 3 reaches 1.2 mpa.
And a bearing platform foundation 5 is poured below the cushion layer 3, and the bearing platform foundation 5 is poured in a bearing platform pit dug when the basement soil body is dug. The bearing platform foundation 5 is poured before the cushion layer 3 is constructed, and the steel bar mesh in the cushion layer 3 is connected with the steel bar mesh of the pre-long part of the bearing platform foundation 5. When the cushion layer 3 is poured, a groove hole for pouring a building cushion cap 6 is reserved in the cushion layer 3 at the position of the cushion layer foundation 5, the building cushion cap 6 is poured in the groove hole reserved in the cushion layer 3 after the whole basement cushion layer 3 is poured, the cushion layer 3 foundation and the cushion layer 6 are poured into a whole to form an integral bottom sealing system of the basement bottom, and disturbance and damage of the mobile mucky soil to the bottom of the basement in the construction stage are prevented.
Preferably, the concrete for pouring the bearing platform foundation 5 and the bearing platform 6 is waterproof concrete, so that the waterproof work of the bearing platform in subsequent construction can be reduced, and the early strength agent is added into the concrete for pouring the bearing platform and the concrete for the bearing platform foundation to enhance the rigidity of the concrete.
A construction method of an integral type bottom sealing system of a basement bottom in a muddy soft soil area comprises the following steps: the method comprises the following steps: leveling the field, erecting Larsen type steel sheet piles 1 around the basement area, excavating surface soil layer by layer to the design depth of the steel supports 2, and installing the steel supports 2; step two: excavating a soil body in an area A in the middle of the basement to the designed depth of the foundation pit, pouring a concrete cushion layer 3 at the bottom of the foundation pit, and stacking and pressing a soil bag above the cushion layer 3; step three: constructing an area B outside the area A by adopting a method of digging and casting and tamping the concrete cushion layer 3 at the same time; step four: after the cushion layer 3 at the bottom of the foundation pit with the basement is completely poured, a building bearing platform 6 is poured; and fifthly, removing the soil bag by means of weight.
The utility model discloses an innovation point lies in that make full use of peripheral cushion cap 6 and hole well thickening concrete cushion 3 form a rigidity wholly, has prevented the disturbance that basement construction stage mobility mucky soil caused to the bottom of the pit and has destroyed, and the peripheral form that adopts steel sheet pile 1 to add the gusset of basement has guaranteed the whole supporting structure safety in basement construction stage. The utility model discloses a be applicable to the excavation of the deep basal pit well soil body in southern silt soft soil area.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides an integral back cover system in soft soil zone basement well bottom of silt matter, is used for protecting Larsen formula steel sheet pile (1) of basement foundation ditch all around including taking to establish at the basement foundation ditch, its characterized in that: the whole bottom of basement foundation ditch is pour and is equipped with bed course (3), bed course (3) inside is equipped with the reinforcing bar net that is used for strengthening bed course (3) rigidity, the below of bed course (3) is equipped with cushion cap basis (5), reinforcing bar net in cushion cap basis (5) is long portion in advance is connected with the reinforcing bar net in bed course (3), the top of cushion cap basis (5) is equipped with cushion cap (6) and is linked together with bed course (3).
2. The integrated bottom sealing system for the basement bottom of the sludge soft soil area according to claim 1, which is characterized in that: the concrete for pouring the cushion layer (3) is mixed with an early strength agent for reinforcing the hardness of the cushion layer (3).
3. The integrated bottom sealing system for the basement bottom of the sludge soft soil area according to claim 1, which is characterized in that: the thickness of the cushion layer (3) is 500 mm.
4. The integrated bottom sealing system for the basement bottom of the sludge soft soil area according to claim 1, which is characterized in that: and a sand stone layer (4) used for enhancing the hardness of the soft soil layer is paved at the bottom of the cushion layer (3).
5. The integrated bottom sealing system for the basement bottom of the sludge soft soil area according to claim 1, which is characterized in that: and a slotted hole for pouring a building bearing platform (6) is reserved in the position of the cushion layer (3) corresponding to the bearing platform foundation (5).
6. The integrated bottom sealing system for the basement bottom of the sludge soft soil area according to claim 1, which is characterized in that: and after the cushion layer (3) is poured, a soil bag layer for reinforcing the cushion layer (3) to prevent the foundation pit from bulging under the pressure is piled above the cushion layer (3).
7. The integrated bottom sealing system for the basement bottom of the sludge soft soil area as claimed in claim 6, wherein: the stacking height of the soil bag layer is 1m, and the soil bag layer is stacked after the concrete pressure of the cushion layer (3) reaches 1.2 mpa.
8. The integrated bottom sealing system for the basement bottom of the sludge soft soil area according to claim 1, which is characterized in that: the concrete for the bearing platform foundation (5) and the bearing platform (6) is waterproof concrete, and an early strength agent is doped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837987.0U CN210315567U (en) | 2019-06-05 | 2019-06-05 | Integral back cover system of basement pit bottom in muddy soft soil area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837987.0U CN210315567U (en) | 2019-06-05 | 2019-06-05 | Integral back cover system of basement pit bottom in muddy soft soil area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210315567U true CN210315567U (en) | 2020-04-14 |
Family
ID=70141988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920837987.0U Expired - Fee Related CN210315567U (en) | 2019-06-05 | 2019-06-05 | Integral back cover system of basement pit bottom in muddy soft soil area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210315567U (en) |
-
2019
- 2019-06-05 CN CN201920837987.0U patent/CN210315567U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1837511B (en) | Double-rowed cofferdam and method for manufacturing the same | |
| CN103321241B (en) | Deep water open type combination foundation harbour and construction method thereof | |
| CN107419630A (en) | A kind of the soft soil foundation high-filled embankment and construction method of effectively control settlement after construction | |
| CN106884433A (en) | Control vibrations pile pulling causes the structure of underground structure depression and control depression method | |
| CN206902488U (en) | A kind of soft soil foundation high-filled embankment of effectively control settlement after construction | |
| CN214993554U (en) | Hydraulic engineering's side slope reinforced structure | |
| CN208949902U (en) | A kind of river channel bridge bearing platform foundation pit antiseepage cofferdam | |
| CN213038379U (en) | Open cut tunnel foundation pit backfilling structure | |
| CN210315567U (en) | Integral back cover system of basement pit bottom in muddy soft soil area | |
| CN205000251U (en) | Complete embedding circular cushion cap construction structures in only pier river course shallow water of single pile | |
| CN105155421B (en) | Complete embedding circular construction method in a kind of single pile Single column pier river course shallow water | |
| CN203939036U (en) | A kind of steel sheet pile cofferdam structure that is applicable to river course | |
| CN114250744B (en) | Ecological combined river slope retaining wall revetment | |
| CN110004876A (en) | Low stake gravity type quay and its construction method suitable for soft soil foundation | |
| CN215165533U (en) | Anchoring structure for side slope of solid waste landfill | |
| CN213625433U (en) | A link up transition structure that is used for gravity type and sheet pile formula combination pier | |
| CN106120853B (en) | A kind of inverted construction method of frame bridge | |
| CN213897154U (en) | Soft soil foundation pit bottom curing structure | |
| CN204608701U (en) | A kind of gravity type quay being applicable to roadbed of alluvial silt | |
| CN210122735U (en) | Underground structure anti-floating system based on outward-protruding wing foot plate | |
| CN210151776U (en) | Structure of balance weight type retaining wall | |
| CN203080480U (en) | Upstream blanket structure of concrete face rockfill dam | |
| CN205804405U (en) | A kind of frame bridge structure of hysterology construction | |
| CN220686110U (en) | Earth stone cofferdam structure | |
| CN217298998U (en) | Cushion structure of material stacking area arranged on foundation cushion of garage in foundation pit |
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: 20200414 Termination date: 20210605 |