CN205062858U - Underground continuous wall and whole anti structure of floating of concrete structure bottom plate - Google Patents
Underground continuous wall and whole anti structure of floating of concrete structure bottom plate Download PDFInfo
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- CN205062858U CN205062858U CN201520806856.8U CN201520806856U CN205062858U CN 205062858 U CN205062858 U CN 205062858U CN 201520806856 U CN201520806856 U CN 201520806856U CN 205062858 U CN205062858 U CN 205062858U
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- shaped steel
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- diaphragm wall
- continuous wall
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Abstract
The utility model discloses an underground continuous wall and the anti structure of floating of the whole of concrete structure bottom plate. It includes underground continuous wall, shaped steel, steel reinforcement cage and concrete structure bottom plate, depend on underground continuous wall the steel reinforcement cage of foundation ditch one side to buckle into a U -shaped groove, embedding U -shaped shaped steel, the steel reinforcement cage becomes whole with shaped steel welding, the shaped steel inslot that U -shaped shaped steel was arranged respectively in at the both ends of concrete floor inlays the antithetical couplet each other. The utility model discloses the concrete floor that will be used for underground continuous wall that deep basal pit excavation maintained and be used for permanent structure in the foundation ditch inlays the antithetical couplet through the shaped steel groove each other, forms a the stress structure, both can guarantee stability at the bottom of the hole among the excavation process, and that can satisfy permanent structure again antily floats the requirement, has the reduction of erection time, reduction engineering cost, and advantages such as risk reduce to be under construction.
Description
Technical field
The utility model relates to whole anti-uplift structure during a kind of excavation of foundation pit, particularly a kind of diaphragm wall and the mutual embedding whole anti-uplift structure of concrete floor.
Background technology
Along with the deep development of underground space structure, in recent years, the excavation of foundation pit degree of depth constantly increases.Diaphragm wall, because of the waterproof seal of its brilliance and anti-bending strength, is the most frequently used space enclosing structure of Fu Shui soft clay area deep pit digging.Deep foundation ditch is in digging process, and owing to cheating the seepage effect that inside and outside unloading effect and foundation ditch that interior soil excavation causes, uneven head produces, usually occur hole end uplift of soil, seepage action of ground water drives soil particle to pour in the hole end unstable phenomenons such as foundation ditch.Hole end unstability can cause diaphragm wall to sink, and cheats outer surface collapse, and hole inner support system is destroyed, and limit, hole is closed on building and the catastrophic effects such as destruction are occurred.Therefore, in design of foundation pit, certain engineering measure must be adopted to ensure hole end stability.The measure of anti-bottom heave conventional at present builds a large amount of plain concretes at hole bottom pour mold, the weight of plain concrete is utilized to carry out water pressure at the bottom of balance pit, such as: plum continent, Nanjing is crossed in the ventilating shaft digging process of river passage, just build 25 meters of thick plain concrete base plates and keep hole end stability.When water pressure is larger at the end in hole, the plain concrete amount of building is large, and cost is higher.
Build in foundation ditch after permanent structure, because permanent structure deadweight is less than its buoyancy usually, permanent structure needs to do Anti-floating design.At present, domestic conventional permanent structure Anti-floating design is in hole bottom pour mold note uplift pile or builds case top pressure beam at permanent structure top.Build uplift pile operation loaded down with trivial details, the duration is longer.Build the diaphragm wall that case top pressure beam needs to cut part-structure top, engineering quantity is large, expensive.
The dead load of diaphragm wall and the side friction of wall both sides can provide good anti-floating power.For this reason, need badly and a kind of new structure is provided, utilize the side friction of the dead load of existing diaphragm wall and wall both sides to realize the anti-floating of anti-bottom heave in Excavation Process and permanent structure, thus can Foundation Pit Pouring be prevented, ensure the anti-floating of permanent structure, can reduce costs again, the reduction of erection time.
Summary of the invention
The utility model, for the deficiency existed in existing foundation pit construction, provides one effectively can prevent Foundation Pit Pouring, ensures the anti-floating of permanent structure, and the diaphragm wall that the construction period is short, cost is low and the mutual embedding whole anti-uplift structure of concrete floor.
The technical scheme realizing the object of the invention is to provide a kind of diaphragm wall and concrete structure base plate whole anti-uplift structure, comprises diaphragm wall, shaped steel, reinforcing cage and concrete structure base plate; Described diaphragm wall, is bent into a U-lag at the reinforcing cage by foundation ditch side, embeds U-shaped shaped steel, reinforcing cage and steel welding are connected into entirety; The two ends of described concrete floor are placed in the shaped steel groove of U-shaped shaped steel respectively.
The groove depth of U-shaped shaped steel described in the utility model is 1/5 ~ 1/3 of diaphragm wall thickness, and the groove width of shaped steel is the height of concrete floor.
The utility model is mutual embedding by shaped steel groove by being used for diaphragm wall that deep pit digging safeguards and being used for the concrete floor of permanent structure in foundation ditch, forms an overall force structure.Specific embodiments is: the reinforcing cage by foundation ditch side in diaphragm wall is bent into U-shaped, welds with shaped steel, thus fixing shaped steel, realize shaped steel accurate location along excavation of foundation pit elevation in underground continuous wall groove; Shaped steel groove depth is 1/5 to 1/3 of diaphragm wall thickness, and width is structure base slab height, ensure that the strength of joint of concrete structure base plate and diaphragm wall; The utility model also adopts shaped steel foam blocking when putting into underground continuous wall groove, avoids diaphragm wall concrete and enters shaped steel groove, thus avoids cutting diaphragm wall avris is concrete in connection concrete structure base plate process.
In prior art, the measure of anti-bottom heave is generally build a large amount of plain concretes at hole bottom pour mold, and utilize the weight of plain concrete to carry out water pressure at the bottom of balance pit, when water pressure is larger at the end in hole, the plain concrete amount of building is large, and cost is higher; Permanent structure Anti-floating design is generally in hole bottom pour mold note uplift pile or builds case top pressure beam at permanent structure top.Build uplift pile operation loaded down with trivial details, the duration is longer.Build the diaphragm wall that case top pressure beam needs to cut part-structure top, engineering quantity is large, expensive.Compared with prior art, the utility model has the advantages that: in Excavation Process, utilize deadweight and the side friction of existing diaphragm wall, and hole end water pressure is resisted in the deadweight of concrete floor, ensure hole end stability; In underground structure operation stage, utilize deadweight and the side friction of diaphragm wall, and the deadweight of permanent structure, realize the anti-floating requirement of structure, so both can ensure stability at the bottom of the hole in digging process, and realize again the anti-floating requirement of permanent structure, there is the shortening duration of a project, reduce engineering cost, reduce the advantages such as construction risk.
Accompanying drawing explanation
Fig. 1 is the generalized section of a kind of diaphragm wall of providing of the utility model embodiment and the mutual embedding whole anti-uplift structure of concrete floor;
In figure, 1, diaphragm wall; 2, U-shaped shaped steel; 3, reinforcing cage; 4, pad; 5, concrete structure base plate.
Detailed description of the invention
Below in conjunction with drawings and Examples, technical solutions of the utility model are described in further detail.
Embodiment 1
See accompanying drawing 1, it is the generalized section of a kind of diaphragm wall of providing of the present embodiment and the mutual embedding whole anti-uplift structure of concrete floor; This structure comprises diaphragm wall 1, be embedded in the U-shaped shaped steel 2 in diaphragm wall reinforcing cage 3, reinforcing cage and U-shaped shaped steel are fixed by pad 4, the two ends of concrete structure base plate 5 are placed in the shaped steel groove of U-shaped shaped steel respectively, make diaphragm wall and concrete floor form mutual embedding whole anti-uplift structure.This structure is mutual embedding by shaped steel groove by being used for diaphragm wall that deep pit digging safeguards and being used for the concrete floor of permanent structure in foundation ditch, make ground continuously and structure base slab form an overall force structure, thus, in Excavation Process, utilize deadweight and the side friction of diaphragm wall, and hole end water pressure is resisted in the deadweight of concrete floor, ensure hole end stability; In underground structure operation stage, utilize deadweight and the side friction of diaphragm wall, and the deadweight of permanent structure, realize the anti-floating requirement of structure.
The construction technology of the diaphragm wall that the present embodiment provides and the mutual embedding whole anti-uplift structure of concrete floor comprises the steps:
1, when floor manufacture diaphragm wall reinforcing cage, the reinforcing cage by foundation ditch side in diaphragm wall is bent into U-shaped, U-shaped shaped steel and reinforcing cage is welded and fixed, shaped steel accurate location along excavation of foundation pit elevation in underground continuous wall groove can be realized.Shaped steel groove foam blocking, invariably descends continuous wall concrete to enter shaped steel groove, thus avoids cutting diaphragm wall avris is concrete in connection concrete structure base plate process; Shaped steel groove depth is 1/5 to 1/3 of diaphragm wall thickness, and width is structure base slab height, ensures the strength of joint of concrete structure base plate and diaphragm wall.
2, after continuous wall trench underground, shaped steel is positioned over the foundation ditch Bottom Altitude in underground continuous wall groove with reinforcing cage, cast diaphragm wall concrete.
3, after excavation of foundation pit to bottom, the foam in shaped steel groove is cut, the reinforcing cage of structure base slab is embedded in the shaped steel groove in the diaphragm wall of foundation ditch both sides.
4, casting reinforced concrete structure base slab, realizes the reliable embedding of diaphragm wall and concrete floor.
It is mutual embedding that diaphragm wall and concrete structure base plate are passed through shaped steel groove by technical solutions of the utility model, make ground continuously and concrete floor form an overall force structure, in Excavation Process, utilize deadweight and the side friction of ground-connecting-wall, and hole end water pressure is resisted in the deadweight of concrete floor, ensure hole end stability; Meanwhile, in underground structure operation stage, utilize deadweight and the side friction of ground-connecting-wall, and the deadweight of permanent structure, realize the anti-floating requirement of structure.This structure both can ensure stability at the bottom of the hole in digging process, realized again the anti-floating requirement of permanent structure, shortened the duration of a project, reduced engineering cost, reduced construction risk.
Claims (2)
1. diaphragm wall and a concrete structure base plate whole anti-uplift structure, is characterized in that: it comprises diaphragm wall, shaped steel, reinforcing cage and concrete structure base plate; Described diaphragm wall, is bent into a U-lag at the reinforcing cage by foundation ditch side, embeds U-shaped shaped steel, reinforcing cage and steel welding are connected into entirety; The two ends of described concrete floor are placed in the shaped steel groove of U-shaped shaped steel respectively.
2. a kind of diaphragm wall according to claim 1 and concrete structure base plate whole anti-uplift structure, it is characterized in that: the degree of depth of described U-shaped shaped steel groove is 1/5 ~ 1/3 of diaphragm wall thickness, the width of U-shaped shaped steel groove is the height of concrete floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520806856.8U CN205062858U (en) | 2015-10-19 | 2015-10-19 | Underground continuous wall and whole anti structure of floating of concrete structure bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520806856.8U CN205062858U (en) | 2015-10-19 | 2015-10-19 | Underground continuous wall and whole anti structure of floating of concrete structure bottom plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205062858U true CN205062858U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520806856.8U Expired - Fee Related CN205062858U (en) | 2015-10-19 | 2015-10-19 | Underground continuous wall and whole anti structure of floating of concrete structure bottom plate |
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| CN (1) | CN205062858U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120799A (en) * | 2016-06-27 | 2016-11-16 | 中铁第四勘察设计院集团有限公司 | Underground utilities are exempted to change across foundation ditch and are moved construction method |
| CN106368211A (en) * | 2016-09-20 | 2017-02-01 | 俞晓东 | Rectangular concrete piles used for constructing side wall of pipe gallery |
| CN114197490A (en) * | 2022-01-07 | 2022-03-18 | 中铁二局集团有限公司 | Cross continuous wall and construction method thereof |
-
2015
- 2015-10-19 CN CN201520806856.8U patent/CN205062858U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106120799A (en) * | 2016-06-27 | 2016-11-16 | 中铁第四勘察设计院集团有限公司 | Underground utilities are exempted to change across foundation ditch and are moved construction method |
| CN106368211A (en) * | 2016-09-20 | 2017-02-01 | 俞晓东 | Rectangular concrete piles used for constructing side wall of pipe gallery |
| CN106368211B (en) * | 2016-09-20 | 2018-10-23 | 俞晓东 | Rectangular concrete pile for building piping lane side wall |
| CN114197490A (en) * | 2022-01-07 | 2022-03-18 | 中铁二局集团有限公司 | Cross continuous wall and construction method thereof |
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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 |
Granted publication date: 20160302 Termination date: 20211019 |
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| CF01 | Termination of patent right due to non-payment of annual fee |