CN211080251U - Structure for replacing support by utilizing structural bottom plate when diaphragm wall is used for separating enclosure - Google Patents
Structure for replacing support by utilizing structural bottom plate when diaphragm wall is used for separating enclosure Download PDFInfo
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- CN211080251U CN211080251U CN201921955343.8U CN201921955343U CN211080251U CN 211080251 U CN211080251 U CN 211080251U CN 201921955343 U CN201921955343 U CN 201921955343U CN 211080251 U CN211080251 U CN 211080251U
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Abstract
The utility model relates to a ground is structure that wall trades and props for utilizing the structure bottom plate to carry out when separating enclosure even, include: the system comprises an underground continuous wall, a front building bottom plate and an integral permanent support changing area thereof, a rear building bottom plate and an integral permanent support changing area thereof and a post-pouring reinforcing area crossing the underground continuous wall, wherein the front building bottom plate and the integral permanent support changing area thereof, the rear building bottom plate and the integral permanent support changing area thereof are respectively arranged on two sides of the underground continuous wall, and the front building bottom plate and the integral permanent support changing area thereof, the rear building bottom plate and the integral permanent support changing area thereof are symmetrically arranged relative to the underground continuous wall; the top end of the underground continuous wall is an underground continuous wall chiseling surface, and the chiseling surface of the underground continuous wall, the support area which is integrally and permanently replaced in the early period and the support area which is integrally and permanently replaced in the later period are post-cast reinforcing areas crossing the underground continuous wall. The utility model discloses a whole permanent support district that trades once only waters with the building bottom plate and smashes, has ensured conversion reliability and the succinct of atress between support and the main part, has controlled the deformation of foundation ditch bottom effectively.
Description
Technical Field
The utility model belongs to the building engineering field specifically, relates to a ground is wall even and utilizes the structure bottom plate to trade the structure that props when separating enclosure.
Background
According to the current requirements of urban planning and management work, the benefits of underground spaces are increasingly remarkable, and particularly, commercial buildings and public buildings around urban subways, a plurality of large-scale businesses and underground subways are communicated and provided with large-scale underground shopping malls and parking garages. The deformation of the upper cover of the subway and the deep foundation pit in the protection area can directly cause the problems of interruption of urban subway operation and personnel safety, so that the deformation requirement of the deep foundation pit at the periphery of the subway is high, the construction process is complex, and the strict requirement is met on the once excavation area of the deep foundation pit. The construction of the deep foundation pit by stages is carried out, the foundation bottom plate needs to be arranged at the underground continuous wall, temporary horizontal support is carried out in the early stage to ensure the transmission of the soil pressure, and the bottom plate is changed to support and the underground continuous wall is chiseled after the construction of each block is finished. Therefore, the simplicity and the clarity of the horizontal support changing mode and the force transmission path are particularly important.
However, the existing common forms of concrete support replacement, compensation steel support and the like need to be replaced inside the deep foundation pit, particularly at the position close to the bottom plate of the building at the bottom of the foundation pit, and the old and new concrete bottom plates are finally poured and tamped after the underground continuous wall is chiseled off. The deformation of the foundation pit and the temporary stress working condition of the bottom plate of the building are difficult to control, the problems of water resistance and seepage resistance of the bottom plate exist, and the water seepage situation of the foundation bottom plate is particularly prominent particularly in the upper cover of the subway and the surrounding commercial buildings which are built in east China, and the underground water is rich.
SUMMERY OF THE UTILITY MODEL
For overcoming the defect that prior art exists, the utility model provides a structure that props is traded to ground even wall for utilizing the structure bottom plate to carry out when separating enclosure not only can satisfy the strict requirement of deformation control of foundation ditch bottom, still has that construction cost is lower and construction cycle is short, the reliable advantage of later stage bottom plate water repellent.
In order to achieve the purpose, the invention adopts the following scheme:
Even wall utilizes structure bottom plate to trade the structure of propping for separating when enclosing, includes: underground continuous wall, earlier stage building bottom plate and whole permanent district of propping of trading thereof, later stage building bottom plate and whole permanent district of propping of trading thereof and cross underground continuous wall post-cast reinforcing district, wherein: the two sides of the underground continuous wall are respectively provided with a front building bottom plate and an integral permanent support changing area thereof, a rear building bottom plate and an integral permanent support changing area thereof, and the front building bottom plate and the integral permanent support changing area thereof, the rear building bottom plate and the integral permanent support changing area thereof are symmetrically arranged around the underground continuous wall; the top end of the underground continuous wall is an underground continuous wall chiseling surface, and the chiseling surface of the underground continuous wall, the support area which is integrally and permanently replaced in the early period and the support area which is integrally and permanently replaced in the later period are post-cast reinforcing areas crossing the underground continuous wall.
Preferably, the early-stage building bottom plate and the integral permanent support-changing area thereof are arranged on the early-stage building bottom plate cushion layer, wherein the early-stage integral permanent support-changing area is a concave cast-in-place reinforced concrete structure with a bottom slope of 45 degrees, an early-stage support-changing U-shaped top rib is arranged in the early-stage integral permanent support-changing area, and an early-stage support-changing water-swelling water stop strip is arranged between the early-stage support-changing U-shaped top rib and the underground continuous wall; later stage building bottom plate and whole permanent district of propping that trades of it establish on later stage building bottom plate bed course, and the whole permanent district of propping of later stage is the concave cast-in-place reinforced concrete structure that the slope was put to bottom 45 degrees, and the whole permanent district of propping of trading of later stage is inside to be equipped with the later stage and trades and prop U type brace to with be equipped with the later stage between the diaphragm wall and trade and prop water inflation sealing rod.
Preferably, a reserved first-stage sleeve and a post-cast reinforcing area water stop steel plate are arranged between the post-cast reinforcing area of the cross-underground continuous wall and the early-stage building bottom plate and the integral permanent support changing area thereof as well as between the post-cast reinforcing area and the later-stage building bottom plate and the integral permanent support changing area thereof; and the post-cast reinforced area stressed steel bars are reliably connected with the early-stage building bottom plates on the two sides and the integral permanent support changing area thereof and the later-stage building bottom plates and the reserved first-stage sleeves of the integral permanent support changing area thereof in a threaded manner, and the first-stage concrete labeled micro-expansion concrete is poured and tamped.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. The integral permanent support changing area and the building bottom plate are provided for one-time pouring and tamping, so that the conversion reliability and simplicity of stress between the support and the main body are ensured, and the deformation of the bottom of the foundation pit is effectively controlled;
2. The method has the advantages that the reliable connection of the bottom plates constructed before and after stages is ensured by providing the post-pouring strengthening area across the underground continuous wall, and the reliability of the stress of the bottom plates is ensured;
3. The waterproof and anti-permeability performance in the use state is ensured by arranging the water swelling water stop strip at the integral permanent support changing area and the underground continuous wall and arranging the water stop steel plate at the post-pouring reinforced area crossing the underground continuous wall;
4. The purpose of reliable support is achieved without the need of arranging low-grade concrete replacement supports or embedded steel supports and other forms at the bottom plate, temporary construction safety support measures are not needed, and construction cost is reduced.
5. The traditional support changing process is avoided, the purpose of reliable support is achieved without the need of arranging low-grade concrete support changing or embedded steel supports and other forms at the bottom plate, and the capability of effectively controlling the deformation of the bottom of the foundation pit and the waterproof and anti-permeability capability of a post-cast connection area are greatly enhanced; and a plurality of temporary construction safety measures are omitted, the construction cost is reduced, and the construction efficiency is improved. The method has better green, environmental protection and safety for the basement construction of commercial and public buildings around urban subways.
Drawings
FIG. 1 is a schematic structural view of a bottom plate of a structure for replacing a support for a diaphragm wall for a partitioned enclosure;
In the figure: 1. the system comprises an underground continuous wall, 2, a front building bottom plate and an integral permanent support changing area thereof, 3, a rear building bottom plate and an integral permanent support changing area thereof, and 4, a post-pouring strengthening area crossing the underground continuous wall; 11. vertical steel bars of the underground continuous wall, 12, chiseling the surface of the underground continuous wall; 21. the early-stage integral permanent support changing area is 22, the early-stage support changing U-shaped top rib is 23, the early-stage support changing water-swelling water stop bar is 24, the early-stage building bottom plate bottom rib is 25 and the early-stage building bottom plate cushion layer is formed; 31. a later-stage integral permanent support changing area 32, a later-stage U-shaped top rib 33, a later-stage water swelling water stop bar 34, a later-stage building bottom plate bottom rib 35 and a later-stage building bottom plate cushion layer; 41. and (3) reserving a first-stage sleeve and a water stop steel plate in the post-cast reinforced area 42.
Detailed Description
As shown in fig. 1, the structure of the underground diaphragm wall for replacing the support by the structural bottom plate when the diaphragm wall is enclosed includes: the system comprises an underground continuous wall 1, a front building bottom plate and an integral permanent support changing area 2 thereof, a rear building bottom plate and an integral permanent support changing area 3 thereof and a post-pouring reinforcing area 4 spanning the underground continuous wall, wherein the front building bottom plate and an integral permanent support changing area 2 thereof, the rear building bottom plate and an integral permanent support changing area 3 thereof are respectively arranged at two sides of the underground continuous wall 1, and the front building bottom plate and an integral permanent support changing area 2 thereof, the rear building bottom plate and an integral permanent support changing area 3 thereof are symmetrically arranged relative to the underground continuous wall 1; the top end of the underground continuous wall 1 is an underground continuous wall chiseling surface 12, and a post-cast reinforcing area 4 crossing the underground continuous wall is arranged above the underground continuous wall chiseling surface 12, the early-stage integral permanent support changing area 21 and the later-stage integral permanent support changing area 31.
The early-stage building bottom plate and the integral permanent support changing area 2 thereof are arranged on the early-stage building bottom plate cushion layer 25, wherein the early-stage integral permanent support changing area 21 is a concave cast-in-place reinforced concrete structure with a bottom slope of 45 degrees, an early-stage support changing U-shaped top rib 22 is arranged inside the early-stage integral permanent support changing area 21, and an early-stage support changing water-swelling water stop bar 23 is arranged between the early-stage support changing U-shaped top rib and the underground continuous wall 1; later stage building bottom plate and whole permanent district 3 that props of trading of it establish on later stage building bottom plate bed course 35, and the whole permanent district 31 that props of trading of later stage is the concave cast-in-place reinforced concrete structure that the slope was put to bottom 45 degrees, and the whole permanent district 31 that props of trading of later stage is inside to be equipped with the later stage and to trade and prop U type brace 32 to be equipped with the later stage with underground continuous wall 1 between and trade and prop water inflation sealing rod 33.
And after the construction of the early-stage building bottom plate and the integral permanent support changing area 2 thereof and the later-stage building bottom plate and the integral permanent support changing area 3 thereof is completed, the underground continuous wall 1 is chiseled to the chiseled surface 12 of the underground continuous wall, and then a cast-in-place concrete structure which is formed by slightly expanding concrete with a first-stage concrete label and is improved compared with the early-stage building bottom plate and the integral permanent support changing area 2 thereof and the later-stage building bottom plate and the integral permanent support changing area 3 thereof is adopted.
Reserved first-stage sleeves 42 and water stop steel plates 43 of the post-cast reinforced area are arranged between the post-cast reinforced area 4 of the cross underground diaphragm wall and the early-stage building bottom plate and the integral permanent support changing area 2 thereof as well as between the later-stage building bottom plate and the integral permanent support changing area 3 thereof. And the post-cast reinforced area stress steel bars 41 are reliably connected with the early building bottom plates on the two sides and the integral permanent support changing area 2 thereof and the later building bottom plate and the reserved first-stage sleeve 42 of the integral permanent support changing area 3 thereof through threads, and the first-stage concrete labeled micro-expansion concrete is poured and tamped. Thereby ensuring that the early-stage building bottom plate and the integral permanent support replacing area 2 thereof are connected with the later-stage building bottom plate and the integral permanent support replacing area 3 thereof to form an integral stressed bottom plate and having more reliable waterproof performance.
The underground diaphragm wall of the utility model is a structure which utilizes a structural bottom plate to change the support during the separation and enclosure, the front-stage integral permanent support changing area 21 and the later-stage integral permanent support changing area 31 can better complete the transmission of the horizontal load of the foundation pit and avoid the forms of setting the low-grade concrete support changing or internally-buried steel support at the bottom plate; by arranging the early-stage support-changing water-swelling water stop strip 23, the later-stage support-changing water-swelling water stop strip 33 and the post-pouring reinforcing area water stop steel plate 43, the water seepage problem caused by construction cold joints of the traditional underground diaphragm wall support-changing area is effectively controlled; the residual vertical steel bars 11 of the underground continuous wall extend into the post-cast reinforcing area 4 across the underground continuous wall through the chiseling surface 12 of the underground continuous wall to form sheet piles to increase the rigidity and the vertical bearing capacity of the bottom plate, so that the stress of the traditional foundation bottom plate is effectively saved, and the purpose of saving materials is achieved; the method has better green, environmental protection and safety for the basement construction of commercial and public buildings around urban subways.
Claims (3)
1. A structure that ground even wall utilizes structure bottom plate to trade when separating enclosure and props includes: underground continuous wall, earlier stage building bottom plate and whole permanent district of propping of trading thereof, later stage building bottom plate and whole permanent district of propping of trading thereof and cross underground continuous wall post-cast reinforcing district, its characterized in that: the two sides of the underground continuous wall are respectively provided with a front building bottom plate and an integral permanent support changing area thereof, a rear building bottom plate and an integral permanent support changing area thereof, and the front building bottom plate and the integral permanent support changing area thereof, the rear building bottom plate and the integral permanent support changing area thereof are symmetrically arranged around the underground continuous wall; the top end of the underground continuous wall is an underground continuous wall chiseling surface, and the chiseling surface of the underground continuous wall, the support area which is integrally and permanently replaced in the early period and the support area which is integrally and permanently replaced in the later period are post-cast reinforcing areas crossing the underground continuous wall.
2. The structure of claim 1, wherein the bracing of the diaphragm wall is changed by a structural bottom plate when the diaphragm wall is enclosed, the structure is characterized in that: the early-stage building bottom plate and the integral permanent support-changing area thereof are arranged on the early-stage building bottom plate cushion layer, wherein the early-stage integral permanent support-changing area is a concave cast-in-place reinforced concrete structure with a bottom slope of 45 degrees, a front-stage support-changing U-shaped top rib is arranged in the early-stage integral permanent support-changing area, and an early-stage support-changing water-swelling water stop strip is arranged between the early-stage support-changing U-shaped top rib and the underground continuous wall; later stage building bottom plate and whole permanent district of propping that trades of it establish on later stage building bottom plate bed course, and the whole permanent district of propping of later stage is the concave cast-in-place reinforced concrete structure that the slope was put to bottom 45 degrees, and the whole permanent district of propping of trading of later stage is inside to be equipped with the later stage and trades and prop U type brace to with be equipped with the later stage between the diaphragm wall and trade and prop water inflation sealing rod.
3. The structure of claim 2, wherein the bracing of the diaphragm wall is changed by a structural bottom plate when the diaphragm wall is enclosed, the structure is characterized in that: reserved first-stage sleeves and water stop steel plates of the post-cast reinforcing area are arranged among the post-cast reinforcing area of the underground diaphragm wall, the early-stage building bottom plate and the integral permanent support changing area thereof, and the later-stage building bottom plate and the integral permanent support changing area thereof; and the post-cast reinforced area stressed steel bars are reliably connected with the early-stage building bottom plates on the two sides and the integral permanent support changing area thereof and the later-stage building bottom plates and the reserved first-stage sleeves of the integral permanent support changing area thereof in a threaded manner, and the first-stage concrete labeled micro-expansion concrete is poured and tamped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921955343.8U CN211080251U (en) | 2019-11-13 | 2019-11-13 | Structure for replacing support by utilizing structural bottom plate when diaphragm wall is used for separating enclosure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921955343.8U CN211080251U (en) | 2019-11-13 | 2019-11-13 | Structure for replacing support by utilizing structural bottom plate when diaphragm wall is used for separating enclosure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211080251U true CN211080251U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921955343.8U Expired - Fee Related CN211080251U (en) | 2019-11-13 | 2019-11-13 | Structure for replacing support by utilizing structural bottom plate when diaphragm wall is used for separating enclosure |
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| CN (1) | CN211080251U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982444A (en) * | 2021-05-06 | 2021-06-18 | 上海建工集团股份有限公司 | Foundation pit support structure and construction method thereof |
-
2019
- 2019-11-13 CN CN201921955343.8U patent/CN211080251U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982444A (en) * | 2021-05-06 | 2021-06-18 | 上海建工集团股份有限公司 | Foundation pit support structure and construction method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200724 Termination date: 20211113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |