CN105178329A - Wall supporting type supporting structure and construction method of foundation pit underground continuous wall - Google Patents
Wall supporting type supporting structure and construction method of foundation pit underground continuous wall Download PDFInfo
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- CN105178329A CN105178329A CN201510482222.6A CN201510482222A CN105178329A CN 105178329 A CN105178329 A CN 105178329A CN 201510482222 A CN201510482222 A CN 201510482222A CN 105178329 A CN105178329 A CN 105178329A
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Abstract
The invention relates to a wall supporting type supporting structure and a construction method of a foundation pit underground continuous wall. The wall supporting type supporting structure comprises the underground continuous wall and is characterized in that an inner guide wall, an outer guide wall and a top beam are arranged on the top of the underground continuous wall, and the top beam is located at the top end of the underground continuous wall and is clamped between the inner guide wall and the outer guide wall; a first support is arranged on an opening of the foundation pit and is fixedly connected with the top beam to form an upper supporting structure; a waist beam is arranged at the position above a basement which is one layer higher than the bottom of the foundation pit, and the waist beam is fixedly connected with the underground continuous wall to form a second supporting structure, that is, a waist supporting structure; a short beam is arranged below the waist beam so as to form a bottom layer basement structure support; a supporting wall is arranged above the waist beam to form a supporting wall type supporting structure of a basement structure of the second layer from the bottom or the second layer from the top; and a drainage ditch is formed at the position, located at the bottom of the foundation pit, of the underground continuous wall. The wall supporting type supporting structure and the method have the beneficial effects that the soil blocking and pressure resisting capacity of the continuous wall are improved, the structure is simple, and construction is convenient.
Description
Technical field
The present invention relates to a kind of buttress type supporting and protection structure and construction method of foundation ditch diaphragm wall, be applicable to pattern foundation pit supporting structure and construction.Belong to foundation pit construction technical field.
Background technology
In prior art, in foundation ditch construction, diaphragm wall is widely used, because when excavation of foundation pit, diaphragm wall can bear larger soil pressure, can avoid foundation settlement or cave in accident occur, become requisite soil-baffling structure in Deep Foundation Pit Supporting Project.
But, along with development and the construction in city, need constantly to underground development space.Housing basement's number of plies gets more and more, and foundation ditch is also more and more darker.Therefore, in foundation ditch is built, diaphragm wall needs the increasing pressure that bears greatly, and the continuous underground wall structure of prior art has been difficult to the soil pressure of bearing deep foundation ditch, needs to arrange supporting and protection structure to diaphragm wall.
In prior art, owing to not using supporting and protection structure to support diaphragm wall, or simple supporting and protection structure is only set, therefore, there is diaphragm wall when carrying out deep foundation pit construction and collapse and the problem of potential safety hazard.
Summary of the invention
An object of the present invention, for solving prior art in deep foundation ditch process of construction because diaphragm wall bears the problem that larger pressure easily collapses, a kind of buttress type supporting and protection structure of foundation ditch diaphragm wall is provided, there is the feature of gear soil and the compression capability improving diaphragm wall.
Object two of the present invention is construction methods of the buttress type supporting and protection structure in order to provide a kind of foundation ditch diaphragm wall.
An object of the present invention can realize by taking following technical scheme:
The buttress type supporting and protection structure of foundation ditch diaphragm wall, comprises diaphragm wall, and its design feature is: in the top of diaphragm wall is arranged, lead wall, lead wall and Guan Liang, Guan Liang on the top of diaphragm wall outward and lead wall in being clipped in, lead between wall outward; Arrange first to support at the near coal-mine place of foundation ditch, described first supports and is fixedly connected with Guan Liang, forms top supporting and protection structure; Bottom foundation ditch, arrange waist rail toward position more than last layer basement height, described waist rail and diaphragm wall wall are fixedly connected to form second braced structures, i.e. lumbar support structure; Short beam is set in the below of waist rail, supports to form bottom basement structure, counterfort is set above waist rail, form layer second from the bottom or the buttress type braced structures along number second layer basement structure; Diaphragm wall wall bottom foundation ditch is provided with gutter.
An object of the present invention can also realize by taking following technical scheme:
Further, the thickness of described diaphragm wall can be 800mm.
Further, the height of described diaphragm wall is three layers of height sum to five layers of basement, is preferably the height sum of three layers of basement.
Two of object of the present invention can realize by taking following technical scheme:
The construction method of the buttress type supporting and protection structure of foundation ditch diaphragm wall, is characterized in that:
1) first on smooth location, diaphragm wall is carried out in construction, then lead in the construction of the both sides, top of diaphragm wall is carried out wall carry out in lead wall, lead wall outward, then Guan Liang is carried out in construction on the top of diaphragm wall;
2) excavation of foundation pit is carried out to excavation face in layering and zoning, and first first support is carried out in construction, and described first supports and is fixedly connected with Guan Liang, forms top supporting and protection structure; Then bottom foundation ditch, arrange waist rail toward position more than last layer basement height, described waist rail and diaphragm wall wall are fixedly connected to form second braced structures, i.e. lumbar support structure;
3) excavation face-7.2m being excavated to foundation ditch locates, and gutter is carried out in construction;
4) basement bottom base plate and basement floor plate second from the bottom are carried out in construction, build support short beam simultaneously, and construction sidewall of basement is to second support base absolute altitude place;
5) remove second braced structures, continue up to construct basement to first support base absolute altitude, and build counterfort simultaneously;
6) finally remove first to support, basement is up constructed to first floor floor, and backfill sidewall and diaphragm wall space, foundation pit construction completes.
Two of object of the present invention can also realize by taking following technical scheme:
Further, between diaphragm wall and sidewall of basement, utilize concrete backfill, make diaphragm wall and sidewall of basement form overall structure.
The present invention has following outstanding beneficial effect:
1, the present invention supports by arranging first at the near coal-mine place of foundation ditch, and described first supports and is fixedly connected with Guan Liang, forms top supporting and protection structure; Bottom foundation ditch, arrange waist rail toward position more than last layer basement height, described waist rail and diaphragm wall wall are fixedly connected to form second braced structures; Short beam is set in the below of waist rail, to form bottom basement form bracing, counterfort is set above waist rail, forms layer second from the bottom or the buttress type braced structures along number second layer basement floor; Be equivalent to arrange the multi-level braced structures to diaphragm wall, and tool buttress type braced structures feature, therefore, can prior art in deep foundation ditch process of construction because diaphragm wall bears the problem that larger pressure easily collapses, have the gear soil that improves diaphragm wall and compression capability, structure simply, the beneficial effect such as easy construction.
2, the present invention adds short beam and counterfort by the diaphragm wall in foundation ditch construction and sidewall of basement, forms a kind of buttress type diaphragm wall supporting and protection structure.This structure can increase the compression capability of diaphragm wall in foundation ditch construction, also plays the effect of reinforcing sidewall of basement wall body structure simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that wall is led in smooth location construction, diaphragm wall comes of age beam.
Fig. 2 is that layered and blocked excavation to excavation face construction first supports, the schematic diagram of second braced structures.
Fig. 3 is excavated to the schematic diagram of excavation of foundation pit face to-7.2m construction drainage ditch.
Fig. 4 for performing negative Tipple Bottom plate and negative two floor plates, and builds the schematic diagram supporting short beam.
Fig. 5 is the schematic diagram removed second braced structures and build counterfort.
Fig. 6 is the schematic diagram in backfill sidewall and diaphragm wall space.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail:
Specific embodiment 1
Referring to figs. 1 through Fig. 6, the buttress type supporting and protection structure of the foundation ditch diaphragm wall related in the present embodiment, comprise diaphragm wall 1, in the top of diaphragm wall 1 is arranged, lead wall 3-1, lead wall 3-2 and hat beam 2 outward, hat beam 2 is on the top of diaphragm wall 1 and lead wall 3-1 in being clipped in, lead between wall 3-1 outward; Arrange first at the near coal-mine place of foundation ditch and support 4, described first supports 4 and is fixedly connected with hat beam 2, forms top supporting and protection structure; Bottom foundation ditch, arrange waist rail 5 toward position more than last layer basement height, described waist rail 5 is fixedly connected to form second braced structures, i.e. lumbar support structure with diaphragm wall wall; Short beam 7 is set in the below of waist rail 5, supports to form negative three layers of basement structure 9, counterfort 8 is set above waist rail 5, forms the buttress type braced structures bearing two layers of basement structure 10; Diaphragm wall wall bottom foundation ditch is provided with gutter 6.
In the present embodiment, the thickness of described diaphragm wall 1 is 800mm.The height of described diaphragm wall 1 is the height sum of three layers of basement.After having constructed.Totally three layers of basement structure in foundation ditch, are that basement bears three layer construction 9, the negative two layers of structure 10 of basement and the negative Rotating fields 11 of basement respectively, in addition, foundation ditch have first floor floor slab structure 12.
The construction method of the buttress type supporting and protection structure of the foundation ditch diaphragm wall that the present embodiment relates to, is characterized in that:
1) first on smooth location, diaphragm wall 1 is carried out in construction, then lead in the construction of the both sides, top of diaphragm wall 1 is carried out wall 3 carry out in lead wall 3-1, lead wall 3-2 outward, then carry out hat beam 2 in the construction of the top of diaphragm wall 1;
2) excavation of foundation pit is carried out to excavation face 13 in layering and zoning, and first construction is carried out first and supported 4, and described first supports 4 and is fixedly connected with hat beam 2, forms top supporting and protection structure; Then bottom foundation ditch, arrange waist rail 5 toward position more than last layer basement height, described waist rail 5 is fixedly connected to form second braced structures, i.e. lumbar support structure with diaphragm wall wall;
3) excavation face-7.2m being excavated to foundation ditch locates, and gutter 6 is carried out in construction;
4) construction is carried out basement and is born three layer construction 9 and basement bears two-layer structure 10, builds simultaneously and supports short beam 7, and construction sidewall of basement to second supports 5 absolute altitude places, the end;
5) remove second braced structures 5, continue up construction basement to first and support 4 end absolute altitudes, and build counterfort 8 simultaneously;
6) finally remove first and support 4, basement is up constructed to a negative Rotating fields 11 and first floor floor 12 place, and backfill sidewall and diaphragm wall space 14, foundation pit construction completes.
Further, between diaphragm wall and sidewall of basement, utilize concrete backfill, make diaphragm wall and sidewall of basement form overall structure.
Owing to strengthening short beam and counterfort between sidewall and continuous body of wall, its continuous body of wall and sidewall of basement overall structure are stronger, can strengthen keeping off native ability, thus strengthen the compression capability of basement and diaphragm wall.
Other specific embodiments:
The feature of other specific embodiments of the present invention is: the height of described diaphragm wall 1 is the height sum of four layers or five layers basement; Short beam 7 is set in the below of waist rail 5, supports to form bottom basement structure, counterfort 8 is set above waist rail 5, form layer second from the bottom or the buttress type braced structures along number second layer basement structure.All the other are with specific embodiment 1.
The above; be only the present invention's preferably specific embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with this technician in the scope that the present invention discloses; be equal to according to technical scheme of the present invention and design thereof and replace or change, all belonged to protection scope of the present invention.The content do not described in detail in the present invention is state of the art scope.
Claims (5)
1. the buttress type supporting and protection structure of foundation ditch diaphragm wall, comprise diaphragm wall (1), it is characterized in that: in the top of diaphragm wall (1) is arranged, lead wall (3-1), lead wall (3-2) and Guan Liang (2), Guan Liang (2) outward and be positioned at the top of diaphragm wall (1) and be clipped in and lead wall (3-1), lead between wall (3-1) outward; Arrange first at the near coal-mine place of foundation ditch and support (4), described first supports (4) and is fixedly connected with Guan Liang (2), forms top supporting and protection structure; Bottom foundation ditch, arrange waist rail (5) toward position more than last layer basement height, described waist rail (5) and diaphragm wall wall are fixedly connected to form second braced structures, i.e. lumbar support structure; Short beam (7) is set in the below of waist rail (5), supports to form bottom basement structure, counterfort (8) is set in the top of waist rail (5), form layer second from the bottom or the buttress type braced structures along number second layer basement structure; Diaphragm wall wall bottom foundation ditch is provided with gutter (6).
2. the buttress type supporting and protection structure of foundation ditch diaphragm wall according to claim 1, is characterized in that: the thickness of described diaphragm wall (1) is 800mm.
3. the buttress type supporting and protection structure of foundation ditch diaphragm wall according to claim 1, is characterized in that: the height three layers of described diaphragm wall (1) is to the height sum of five layers of basement.
4. the construction method of the buttress type supporting and protection structure of foundation ditch diaphragm wall according to claim 1, is characterized in that:
1) first on smooth location, diaphragm wall (1) is carried out in construction, then lead in the construction of the both sides, top of diaphragm wall (1) is carried out wall (3) carry out in lead wall (3-1), lead wall (3-2) outward, then Guan Liang (2) is carried out in construction on the top of diaphragm wall (1);
2) excavation of foundation pit is carried out to excavation face in layering and zoning, and first construction is carried out first and supported (4), and described first supports (4) and is fixedly connected with Guan Liang (2), forms top supporting and protection structure; Then bottom foundation ditch, arrange waist rail (5) toward position more than last layer basement height, described waist rail (5) and diaphragm wall wall are fixedly connected to form second braced structures, i.e. lumbar support structure;
3) excavation face-7.2m being excavated to foundation ditch locates, and gutter (6) is carried out in construction;
4) basement substructure and basement Rotating fields second from the bottom are carried out in construction, build simultaneously and support short beam (7), and construction sidewall of basement is to second support base absolute altitude place;
5) remove second braced structures, continue up to construct basement to first support base absolute altitude, and build counterfort (8) simultaneously;
6) finally remove first and support (4), basement is up constructed to a negative Rotating fields and first floor floor, and backfill sidewall and diaphragm wall space (14), foundation pit construction completes.
5. the construction method of the buttress type supporting and protection structure of foundation ditch diaphragm wall according to claim 4, is characterized in that: between diaphragm wall and sidewall of basement, utilize concrete backfill, makes diaphragm wall and sidewall of basement form overall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510482222.6A CN105178329A (en) | 2015-08-08 | 2015-08-08 | Wall supporting type supporting structure and construction method of foundation pit underground continuous wall |
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| CN201510482222.6A CN105178329A (en) | 2015-08-08 | 2015-08-08 | Wall supporting type supporting structure and construction method of foundation pit underground continuous wall |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638622A (en) * | 2017-02-20 | 2017-05-10 | 中车建设工程有限公司 | Foundation pit temporary supporting structure and foundation pit construction method for preventing adjacent building foundation from deforming |
| CN107023021A (en) * | 2017-05-31 | 2017-08-08 | 郑州安源工程技术有限公司 | A kind of design and construction method of flexible compound Diaphragm Wall Support Structure |
| CN107246017A (en) * | 2017-08-07 | 2017-10-13 | 深圳市勘察研究院有限公司 | A kind of steel-concrete structure assembled underground engineering support system and construction technology |
| CN108487252A (en) * | 2018-03-13 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of deep foundation pit open cutting is suitable to make construction method |
| CN109403632A (en) * | 2018-12-08 | 2019-03-01 | 上海宝冶集团有限公司 | A kind of ground-connecting-wall crown beam and superstructure connection construction method |
| CN115233694A (en) * | 2022-08-20 | 2022-10-25 | 广州市岩土勘测设计有限公司 | Anti-floating flexible combined support for foundation pit and construction method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106638622A (en) * | 2017-02-20 | 2017-05-10 | 中车建设工程有限公司 | Foundation pit temporary supporting structure and foundation pit construction method for preventing adjacent building foundation from deforming |
| CN107023021A (en) * | 2017-05-31 | 2017-08-08 | 郑州安源工程技术有限公司 | A kind of design and construction method of flexible compound Diaphragm Wall Support Structure |
| CN107023021B (en) * | 2017-05-31 | 2019-11-26 | 郑州安源工程技术有限公司 | A kind of design and construction method of flexible compound Diaphragm Wall Support Structure |
| CN107246017A (en) * | 2017-08-07 | 2017-10-13 | 深圳市勘察研究院有限公司 | A kind of steel-concrete structure assembled underground engineering support system and construction technology |
| CN108487252A (en) * | 2018-03-13 | 2018-09-04 | 中铁第四勘察设计院集团有限公司 | A kind of deep foundation pit open cutting is suitable to make construction method |
| CN109403632A (en) * | 2018-12-08 | 2019-03-01 | 上海宝冶集团有限公司 | A kind of ground-connecting-wall crown beam and superstructure connection construction method |
| CN115233694A (en) * | 2022-08-20 | 2022-10-25 | 广州市岩土勘测设计有限公司 | Anti-floating flexible combined support for foundation pit and construction method thereof |
| CN115233694B (en) * | 2022-08-20 | 2023-10-13 | 广州市岩土勘测设计有限公司 | Anti-floating flexible combined support for foundation pit and construction method thereof |
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Application publication date: 20151223 |