CN103147445A - Novel open-sea deep foundation pit support structure - Google Patents
Novel open-sea deep foundation pit support structure Download PDFInfo
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- CN103147445A CN103147445A CN2013100989781A CN201310098978A CN103147445A CN 103147445 A CN103147445 A CN 103147445A CN 2013100989781 A CN2013100989781 A CN 2013100989781A CN 201310098978 A CN201310098978 A CN 201310098978A CN 103147445 A CN103147445 A CN 103147445A
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Abstract
The invention discloses a novel open-sea deep foundation pit support structure, which belongs to the technical field of a foundation pit support structure; and the novel open-sea deep foundation pit support structure mainly consists of a plurality of steel cylinders which are plugged into a hard soil layer and a plurality of water-stop cells, wherein the steel cylinders are distributed along the side boundary of a foundation pit, each water-stop cell is arranged between every two adjacent steel cylinders, and the steel cylinders are matched with the water-stop cells to form the foundation pit support water-stop structure. The novel open-sea deep foundation pit support structure is compact and reasonable in structure, high in working efficiency, large in construction and operation area and good in water-stop effect and used for supporting the foundation pit in open-sea operation.
Description
Technical field
The present invention relates to a kind of supporting and protection structure, more particularly, relate in particular to a kind of novel off-lying sea deep foundation pit supporting structure.
Background technology
Foundation depth surpasses 5m and is defined as deep foundation ditch, and the degree of depth surpasses 10m and belongs to the one-level deep foundation ditch.The off-lying sea deep foundation pit support has the characteristics such as the depth of water, load are large, thick weak soil, and stability and the sealing of foundation pit structure had very high requirement.The formation land-based area is first filled in pattern foundation pit supporting structure general employing in off-lying sea; then carry out the construction of foundation pit structure according to the land construction method; common pattern foundation pit supporting structure can adopt layering supporting and protection structure; be that campshed (steel pipe pile, castinplace pile or ground-connecting-wall) is adopted in both sides; support to satisfy constitutionally stable requirement by layering, take again the measures such as high-pressure rotary-spray to satisfy the sealing requirement between campshed.The existence that this structure supports due to layering causes operation side narrow and small, and the construction effect of foundation ditch inner structure is low, and exists a large amount of water-stopping joints to process, and the guarantee degree of sealing is low.Simultaneously for satisfying the stability requirement that fills of off-lying sea, deep water, thick software ground, need carry out soft based process in the land-based area forming process, the slow process that increases due to the treatment of soft foundation soil strength has restricted the speed that land-based area forms, thereby causes the whole duration of conventional foundation pit supporting construction slow.The present invention proposes a kind of novel off-lying sea deep foundation pit supporting structure, to solve the problems such as the work efficiency that exists in conventional structure is low, operation side is little, sealing guarantee degree is not high.
Summary of the invention
The object of the invention is to for above-mentioned the deficiencies in the prior art, a kind of compact conformation, reasonable is provided, work efficiency is high, the novel off-lying sea deep foundation pit supporting structure that operation side is large and stagnant water effect is good.
Technical scheme of the present invention is achieved in that a kind of novel off-lying sea deep foundation pit supporting structure, wherein this supporting and protection structure mainly is comprised of the some steel cylinders that insert hardpan and some sealing lattice storehouses, described steel cylinder is along foundation ditch sideline distribution, described sealing lattice storehouse is arranged between adjacent two steel cylinders, and described steel cylinder and the storehouse cooperation of sealing lattice form the pattern foundation pit supporting structure water-stopping structure.
In above-mentioned novel off-lying sea deep foundation pit supporting structure, mark value of passing through of described hardpan is 20～30 to hit.
In above-mentioned novel off-lying sea deep foundation pit supporting structure, the degree of depth of described steel cylinder and sealing lattice storehouse insertion hardpan is 3～5 meters.
In above-mentioned novel off-lying sea deep foundation pit supporting structure, the diameter of described steel cylinder is 18～28 meters, and the spacing between described steel cylinder is 10%～15% of steel drum diameter.
In above-mentioned novel off-lying sea deep foundation pit supporting structure, the both sides, gap between described adjacent two steel cylinders are relatively set with respectively curved plate, and described curved plate and corresponding adjacent two steel cylinder outer walls coordinate and form sealing lattice storehouses.
In above-mentioned novel off-lying sea deep foundation pit supporting structure, described curved plate is respectively equipped with tongue-and-groove with the two ends that the steel cylinder contacts, and is provided with the snap close corresponding with tongue-and-groove on each steel cylinder; Described curved plate is fixed between two adjacent steel cylinders by tongue-and-groove and snap fit.
In above-mentioned novel off-lying sea deep foundation pit supporting structure, be filled with sandstone in described steel cylinder.
In above-mentioned novel off-lying sea deep foundation pit supporting structure, described sealing lattice are filled with sandstone in the storehouse.
After the present invention adopts said structure, coordinate with curved plate by the steel cylinder to form sealing supporting and protection structure, position by tongue-and-groove and snap fit simultaneously, compared with prior art, have advantages of following:
(1) yardstick of steel cylinder is large, and the monomer number that the deep foundation ditch of same size needs is few, and steel cylinder speed of application is fast simultaneously, and foundation ditch can rapid shaping.
(2) the steel cylinder inserts the soil body deeply, imitates to satisfy the stability requirement of foundation ditch by the build-in of the soil body, and the foundation ditch height can reach 18m, and structure homeostasis need not to support, and therefore provides good work plane for the construction of foundation ditch inner structure, working procedure is greatly simplified, and effect is high.
(3) sealing performance of steel cylinder itself is good, carries out patching with the junction in the secondary lattice of curved plate storehouses and just can satisfy the sealing requirement, and the patching workload is few, and reliability is high.
Description of drawings
The present invention is described in further detail below in conjunction with the embodiment in accompanying drawing, but do not consist of any limitation of the invention.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the syndeton schematic diagram of curved plate of the present invention and steel cylinder.
In figure: steel cylinder 1, sealing lattice storehouse 2, curved plate 3, tongue-and-groove 4, snap close 5.
The specific embodiment
Consult illustrated in figures 1 and 2, a kind of novel off-lying sea of the present invention deep foundation pit supporting structure, this supporting and protection structure mainly is comprised of the some steel cylinders 1 that insert hardpan and some sealing lattice storehouse 2, the degree of depth that hardpans are inserted in steel cylinder 1 and sealing lattice storehouse 2 is 3～5 meters, and, mark value of passing through of hardpan described in the present embodiment is 20～30 to hit, and to guarantee steel cylinder 1 and sealing lattice storehouse 2, enough intensity is arranged.Described steel cylinder 1 distributes along the foundation ditch sideline, and between described sealing lattice storehouse 2 was arranged on adjacent two steel cylinders 1, described steel cylinder 1 and sealing lattice storehouse 2 coordinated and form the pattern foundation pit supporting structure water-stopping structures.The diameter of the cylinder of steel described in the present embodiment 1 is 18～28 meters, spacing between described steel cylinder 1 is 10%～15% of steel cylinder 1 diameter, this spacing is in order to guarantee that sealing lattice storehouse 2 can not deform too greatly due to stressed, affects the quality that pattern foundation pit supporting structure water stops structure.Both sides, gap between described adjacent two steel cylinders 1 are relatively set with respectively curved plate 3, and described curved plate 3 and corresponding two adjacent steel cylinders 1 outer wall coordinate and form sealing lattice storehouse 2.Simultaneously, be filled with the sandstone of middle coarse granule degree in steel cylinder 1, be filled with the sandstone of middle coarse granule degree in sealing lattice storehouse 2.Can improve like this intensity and the stability in steel cylinder 1 and sealing lattice storehouse 2.
Further, the two ends that contact with steel cylinder 1 at curved plate 3 are respectively equipped with tongue-and-groove 4, are provided with the snap close corresponding with tongue-and-groove 45 on each steel cylinder 1; Described curved plate 3 is fixed between two adjacent steel cylinders 1 by tongue-and-groove 4 and snap close 5.
During construction, all should construct to hardpan in the lower end of steel cylinder 1 and curved plate 3.Its working procedure is: (1) sinking steel cylinder; (2) backfill medium coarse sand in the cylinder; (3) backfill sandstone in sinking adjacent steel cylinder and cylinder; (4) the curved plate formation sealing lattice storehouse between adjacent two the steel cylinders of sinking; (5) backfill sandstone in sealing lattice storehouse.So circulation construction is until treating the peripheral foundation pit supporting construction that forms closed sealing in operating area.
Claims (9)
1. novel off-lying sea deep foundation pit supporting structure, it is characterized in that, this supporting and protection structure mainly is comprised of some steel cylinders (1) and some sealing lattice storehouses (2) of inserting hardpan, described steel cylinder (1) is along foundation ditch sideline distribution, described sealing lattice storehouses (2) are arranged between adjacent two steel cylinders (1), and described steel cylinder (1) and sealing lattice storehouses (2) coordinate formation pattern foundation pit supporting structure water-stopping structure.
2. novel off-lying sea according to claim 1 deep foundation pit supporting structure, is characterized in that, mark value of passing through of described hardpan is 20～30 to hit.
3. novel off-lying sea according to claim 1 deep foundation pit supporting structure, is characterized in that, the degree of depth that hardpan is inserted in described steel cylinder (1) and sealing lattice storehouses (2) is 3～5 meters.
4. novel off-lying sea according to claim 1 deep foundation pit supporting structure, is characterized in that, the diameter of described steel cylinder (1) is 18～28 meters, and the spacing between described steel cylinder (1) is 10%～15% of steel cylinder (1) diameter.
5. novel off-lying sea according to claim 1 deep foundation pit supporting structure, it is characterized in that, both sides, gap between described adjacent two steel cylinders (1) are relatively set with respectively curved plate (3), and described curved plate (3) forms sealing lattice storehouses (2) with corresponding adjacent two steel cylinders (1) outer wall cooperation.
6. novel off-lying sea according to claim 5 deep foundation pit supporting structure, it is characterized in that, the two ends that described curved plate (3) contacts with steel cylinder (1) are respectively equipped with tongue-and-groove (4), are provided with the snap close (5) corresponding with tongue-and-groove (4) on each steel cylinder (1); Described curved plate (3) is fixed between adjacent two steel cylinders (1) by tongue-and-groove (4) and snap close (5).
According to claim 1 to 6 arbitrary described novel off-lying sea deep foundation pit supporting structure, it is characterized in that, be filled with sandstone in described steel cylinder (1).
8. novel off-lying sea according to claim 7 deep foundation pit supporting structure, is characterized in that, is filled with sandstone in described sealing lattice storehouses (2).
According to claim 1 to 6 arbitrary described novel off-lying sea deep foundation pit supporting structure, it is characterized in that, be filled with sandstone in described sealing lattice storehouses (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100989781A CN103147445A (en) | 2013-03-26 | 2013-03-26 | Novel open-sea deep foundation pit support structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100989781A CN103147445A (en) | 2013-03-26 | 2013-03-26 | Novel open-sea deep foundation pit support structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0849236A (en) * | 1994-05-13 | 1996-02-20 | Haseko Corp | Sheathing construction method |
| CN202000310U (en) * | 2011-01-28 | 2011-10-05 | 中交第四航务工程勘察设计院有限公司 | Novel insertion-type connecting device between adjacent cylinders |
| CN202247920U (en) * | 2011-09-27 | 2012-05-30 | 天津住宅集团建设工程总承包有限公司 | Construction structure for water drainage of blind ditch and water collecting wells in deep foundation pit |
| CN202466598U (en) * | 2011-12-01 | 2012-10-03 | 广东省基础工程公司 | Supporting structure for groove construction |
| CN203160256U (en) * | 2013-03-26 | 2013-08-28 | 中交第四航务工程勘察设计院有限公司 | Novel open sea deep foundation pit supporting structure |
-
2013
- 2013-03-26 CN CN2013100989781A patent/CN103147445A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0849236A (en) * | 1994-05-13 | 1996-02-20 | Haseko Corp | Sheathing construction method |
| CN202000310U (en) * | 2011-01-28 | 2011-10-05 | 中交第四航务工程勘察设计院有限公司 | Novel insertion-type connecting device between adjacent cylinders |
| CN202247920U (en) * | 2011-09-27 | 2012-05-30 | 天津住宅集团建设工程总承包有限公司 | Construction structure for water drainage of blind ditch and water collecting wells in deep foundation pit |
| CN202466598U (en) * | 2011-12-01 | 2012-10-03 | 广东省基础工程公司 | Supporting structure for groove construction |
| CN203160256U (en) * | 2013-03-26 | 2013-08-28 | 中交第四航务工程勘察设计院有限公司 | Novel open sea deep foundation pit supporting structure |
Non-Patent Citations (1)
| Title |
|---|
| 王彦林等: "港珠澳大桥外海人工岛快速成岛技术", 《施工技术》 * |
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Application publication date: 20130612 |