CN105002912A - Construction method for splicing type caisson structure based on prefabricated hollow piles - Google Patents
Construction method for splicing type caisson structure based on prefabricated hollow piles Download PDFInfo
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- CN105002912A CN105002912A CN201510445305.8A CN201510445305A CN105002912A CN 105002912 A CN105002912 A CN 105002912A CN 201510445305 A CN201510445305 A CN 201510445305A CN 105002912 A CN105002912 A CN 105002912A
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Abstract
The invention provides a construction method for a splicing type caisson structure based on prefabricated hollow piles. The construction method involves the prefabricated special-shaped hollow piles with right-angle edges and the strip type prefabricated special-shaped hollow piles. The construction method comprises the steps that a bottom layer is arranged, i.e., the prefabricated special-shaped hollow piles with the right-angle edges and conical bottom faces are arranged at the right-angle positions of a foundation pit, the strip type prefabricated special-shaped hollow piles with the conical bottom faces are orderly placed at other positions, and suspended walls of all the prefabricated special-shaped hollow piles are connected through electric welding; horizontal preserved steel plates of the prefabricated special-shaped hollow piles are connected with prefabricated structure plates through electric welding at a position far from the bottom layer by a certain distance, at the position, the structure plates which are continuously sealed are formed, and the caisson structure is formed by connecting the structure plates and the special-shaped hollow piles and connecting the special-shaped hollow piles; and the position under the caisson structure is dug through manipulators, so that the caisson structure sinks. By means of the construction method, building lands and materials are saved, mud contamination is avoided, underground permanent solid waste is avoided, and the construction method meets an environment-friendly building concept.
Description
Technical field
the present invention relates to a kind of construction method of the caisset spliced based on Prefabricated hollow stake.
Background technology
At present, the form of deep foundation pit of construction supporting and protection structure has two large classes: one is temporary support structures; Two is forms that supporting and protection structure combines with agent structure.Temporary support structures is after basement construction completes, and its effect stops completely, and will leave permanent discarded object in agent structure neighboring.The support form that supporting and protection structure combines with agent structure often adopts the form of diaphragm wall, but, underground parking garage foundation pit supporting project is built in the environment of community or other narrow fields, now supporting and protection structure is according to the form of diaphragm wall, construction has certain limitation and shortcoming, as: (1) large-scale grooving equipment may not enter building-site; (2) construction of diaphragm wall is on-the-spot can bring environment pollution by a large amount of discarded slurry of generation; (3) metope of diaphragm wall is usually more coarse, even there will be folder mud phenomenon, usually needs to do one inwall again and carry out waterproof, thus increase duration and cost.
Summary of the invention
The object of the invention, it is the construction method that a kind of caisset spliced based on Prefabricated hollow stake will be provided, it overcomes the shortcoming of existing deep foundation pit supporting structure and construction aspect thereof, be specially adapted in intensive residential block, medium and small underground parking garage foundation ditch combines with agent structure and constructs, and can operate in the construction environment of narrow field.
The present invention realizes like this, the construction method of described a kind of caisset spliced based on Prefabricated hollow stake, it comprises containing the prefabricated abnormity on an empty stomach stake of right-angle side, the stake on an empty stomach of the prefabricated abnormity of strip, its construction method is: (1) bottom is arranged: along body of wall axis, the prefabricated abnormity empty stomach stake containing right-angle side bottom surface being set to taper is placed in the square position of foundation ditch, all the other positions put the prefabricated abnormity of the strip stake on an empty stomach that bottom surface is set to taper in order, and between the suspended wall of each prefabricated abnormity empty stomach stake, electric welding connects; Reserve steel plate in distance bottom a distance by prefabricated abnormity empty stomach stake horizontal direction to be connected with prefabricated structural slab electric welding, form the structural slab closed continuously herein, by structural slab and special-shaped stake on an empty stomach and be special-shapedly interconnected to form caisset on an empty stomach between stake; In the below of caisset, adopt manipulator to excavate and caisset is sunk; (2) setting more than bottom: vertical direction, the prefabricated abnormity empty stomach stake of the stake of prefabricated abnormity empty stomach and bottom that bottom surface are remained in advance the steel plate welded is alignd and welds; Horizontal direction, two prefabricated abnormity level welding between stake on an empty stomach, at the needs of certain distance according to agent structure, special-shaped stake and prefabricated structural slab are on an empty stomach welded to each other; (3) the described caisset spliced based on Prefabricated hollow stake, can utilize when caisset is constructed the empty stomach of up/down perforation to be unearthed and transport of materials, sink to by empty stomach penetration concrete after predetermined absolute altitude until caisset, or backfilled with earth.
The invention has the beneficial effects as follows, 1, save building land, material, mud-less pollution, without the permanent solid waste in underground, meets the facade lighting of environmental protection; 2, engineering comprehensive cost is low, and total lever factor shortens greatly; 3, easy construction, there is applicability widely; 4, utilize the mechanical property in cross section on an empty stomach, save material; 5, precast pile is quality controllable, and anti-permeability performance is strong, without the need to performing one water-resistant liner wall again; 6, according to place size, select equipment flexibly, prefabricated abnormity on an empty stomach stake can be mass, cost-saving; 7, be easy to adopt prestressing technique, improve impermeability further, meet seepage resistance demand; 8, to accomplish scale production construction, save labour, improve working conditions, improve working security.9, stake on an empty stomach can be made full use of be unearthed at position on an empty stomach, improve caisson sinking efficiency.
Accompanying drawing explanation
Fig. 1 is caisset base plate plane schematic diagram of the present invention.
Fig. 2 is caisset typical floor plan schematic diagram of the present invention.
Fig. 3 is that schematic diagram is welded in stake and the stake of strip prefabricated abnormity empty stomach to the prefabricated abnormity containing right-angle side of the present invention on an empty stomach.
Fig. 4 is the prefabricated abnormity of two strips of the present invention stake welding schematic diagram on an empty stomach
Fig. 5 is Fig. 3, the A-A sectional drawing (bottom, bottom surface is set to taper) shown in 4.
Fig. 6 is Fig. 3, A-A sectional drawing shown in 4 (except bottom with upper strata).
Fig. 7 is the welding elevational schematic view shown in Fig. 4.
Fig. 8 is the 1-1 sectional drawing shown in Fig. 2.
Fig. 9 is the 2-2 sectional drawing shown in Fig. 2.
Figure 10,11,12 is caisson sinking of the present invention and unearthed schematic diagram, (arrow is direction of being unearthed).
In figure: 1. containing the prefabricated abnormity stake on an empty stomach of right-angle side, the 2. prefabricated abnormity of strip stake, 3. suspended wall on an empty stomach,
4. the steel plate for welding, 5. right angle is provided with the empty stomach of up/down perforation, and 6. centre position is provided with the empty stomach of up/down perforation, 7. taper, 8. weld seam, the 9. stake on an empty stomach of the prefabricated abnormity of first floor, the 10. stake on an empty stomach of the prefabricated abnormity of the second layer, the stake on an empty stomach of the prefabricated abnormity of 11. third layer, 12. closed substructure plates, 13. structural slabs, 14. non-structure plates, 15. ground, 16. manipulators.
Detailed description of the invention
The construction method of a kind of caisset spliced based on Prefabricated hollow stake of the present invention, (building underground parking garage), as shown in figs. 1-12, it comprises containing the prefabricated abnormity on an empty stomach stake of right-angle side, the stake on an empty stomach of the prefabricated abnormity of strip, its construction method is: (1) bottom is arranged: along body of wall axis, the prefabricated abnormity empty stomach stake containing right-angle side bottom surface being set to taper is placed in the square position of foundation ditch, all the other positions put the prefabricated abnormity of the strip stake on an empty stomach that bottom surface is set to taper in order, and between the suspended wall of each prefabricated abnormity empty stomach stake, electric welding connects; Reserve steel plate in distance bottom a distance by prefabricated abnormity empty stomach stake horizontal direction to be connected with prefabricated structural slab electric welding, form the structural slab closed continuously herein, by structural slab and special-shaped stake on an empty stomach and be special-shapedly interconnected to form caisset on an empty stomach between stake; In the below of caisset, adopt manipulator 16 to excavate and caisset is sunk; (2) setting more than bottom: vertical direction, the prefabricated abnormity empty stomach stake of the stake of prefabricated abnormity empty stomach and bottom that bottom surface are remained in advance the steel plate welded is alignd and welds; Horizontal direction, two prefabricated abnormity level welding between stake on an empty stomach, at the needs of certain distance according to agent structure, special-shaped stake and prefabricated structural slab are on an empty stomach welded to each other; (3) the described caisset spliced based on Prefabricated hollow stake, can utilize when caisset is constructed the empty stomach of up/down perforation to be unearthed and transport of materials, sink to by empty stomach penetration concrete after predetermined absolute altitude until caisset, or backfilled with earth.
A kind of caisset spliced based on Prefabricated hollow stake of the present invention, described caisset, it comprises containing the prefabricated abnormity on an empty stomach stake 1 of right-angle side, the stake 2 on an empty stomach of the prefabricated abnormity of strip, closed substructure plate 12 and some Rotating fields plates 13; The described prefabricated abnormity containing right-angle side on an empty stomach stake is respectively interval with two suspended walls 3 in two vertical end, and the end of suspended wall 3 remains for the steel plate 4 welded in advance, and its right angle is provided with the empty stomach 5 of up/down perforation; The prefabricated abnormity of described strip on an empty stomach stake 2 is provided with the empty stomach 6 of up/down perforation for centre position, and two ends are respectively interval with two suspended walls 3, and the end of suspended wall 3 remains for the steel plate 4 of welding in advance; The described prefabricated abnormity containing right-angle side is stake 1 and the stake 2 on an empty stomach of the prefabricated abnormity of strip on an empty stomach, and its end face remains for the steel plate 4 welded in advance, the steel plate 4 that its bottom surface or remain in advance is welded or be set to taper 7; The described prefabricated special-shaped stake 1 on an empty stomach containing right-angle side and the stake 2 on an empty stomach of the prefabricated abnormity of strip, two suspended wall 3 sizes that its two ends are respectively interval with are identical, convenient linking.Be provided with horizontal and vertical reinforcing bar in prefabricated abnormity empty stomach pile lining of the present invention, reinforcing bar is welded and fixed with the steel plate 4 for welding.The end indicating suspended wall in Fig. 3,4 remains for the weld seam 8 of the steel plate welded in advance.
The construction method of a kind of caisset spliced based on Prefabricated hollow stake of the present invention, its operating type, one: containing the prefabricated abnormity on an empty stomach stake 1 of right-angle side, the prefabricated special-shaped stake 2 on an empty stomach of strip, closed substructure plate 12, structural slab 13, they are well transported to scene or field fabrication again by produce in factory.Two: caisset cuts the earth as shown in Figure 10,11,12, in the below of caisset, adopt manipulator 16 to excavate and caisset is sunk.The stake 9 on an empty stomach of the prefabricated abnormity of first floor is also indicated, the stake 10 on an empty stomach of the prefabricated abnormity of the second layer, the stake 11 on an empty stomach of the prefabricated abnormity of third layer, weld seam 8 in Fig. 7.Non-structure plate 14 is also indicated in Fig. 2.Ground 15 is also indicated in Fig. 8-12.
Described a kind of caisset spliced based on Prefabricated hollow stake is made up of containing the prefabricated abnormity stake 1 on an empty stomach of right-angle side, the stake 2 on an empty stomach of the prefabricated abnormity of some strips, closed substructure plate 12 and some Rotating fields plates 13 some, they are discharged in order along pattern foundation pit supporting structure axis (i.e. body of wall axis), then, weld between stake with stake, between stake with structural slab.The prefabricated special-shaped stake 2 on an empty stomach of described strip, intermediate position is provided with the empty stomach 6 of up/down perforation, and its clear span is generally not less than 0.6m, only long 1.0 ~ 1.6m; Distance between two cantilevers 3, its clear span is generally not less than 0.6m, the suitable 0.3 ~ 0.5m of arm length; Right angle is provided with the empty stomach 5 of up/down perforation, and its clear span only length is not less than 0.6m.Concrete wall thickness and arrangement of reinforcement are determined by design.
Specific embodiment of the invention step is as follows:
Place geological mapping and surrounding enviroment prospecting: supplement boring at equal intervals along pattern foundation pit supporting structure axis, pitch-row 2 ~ 4 meters, according to actual conditions the need of encryption; Hole depth is not less than 1.5 foundation depths, deepens encryption according to actual conditions.Whether emphasis has the adverse geological conditions such as the fluctuating of boulder, scar, groundwater table, stream mud, quicksand, solution cavity, to carry out counter-measure in advance by reconnoitring geology.According to hydrogeologic data, grasp draining to the influence degree of surrounding enviroment, work out measures, reduce the impact on foundation ditch surrounding enviroment as far as possible.
Design of Retaining Structure of Foundation Pit: according to geology exploration report and related request thereof, determines the relative dimensions etc. such as prefabricated special-shaped stake sectional reinforcement on an empty stomach.Adopt the design that supporting and protection structure combines with agent structure, and go out drawing.
Construction method takes following steps:
1, the putting of the prefabricated special-shaped stake on an empty stomach of first floor, is welded into entirety by crane along the prefabricated special-shaped stake on an empty stomach of axis drain, closed substructure plate can adopt cast-in-place or prefabricated with abnormal shape on an empty stomach stake formed overall as Fig. 1;
2, caisson can take manipulator to cut the earth as Figure 10.
3, after caisson sinking to default absolute altitude, the prefabricated special-shaped stake on an empty stomach of the second layer and prefabricated special-shaped stake transverse weld (requiring whether vertically weld according to preceding processes) on an empty stomach of first floor.The special-shaped stake on an empty stomach of the second layer is highly advised getting 2 ~ 3 meters, as shown in Figure 7; Weld size is by designing and calculating value, and weld seam construction should be full, formed and close, and structural slab part arranges to weld with empty stomach stake according to designing requirement and forms entirety.Equally as step 2 carries out shoveling.
4, the follow-up prefabricated special-shaped stake on an empty stomach of sequence construction successively, precast construction plate, until whole caisson sinking is to predetermined absolute altitude, as Figure 11,12.
Claims (1)
1. the construction method based on the spliced caisset of Prefabricated hollow stake, it comprises containing the prefabricated abnormity on an empty stomach stake of right-angle side, the stake on an empty stomach of the prefabricated abnormity of strip, it is characterized in that: (1) bottom is arranged: along body of wall axis, the prefabricated abnormity empty stomach stake containing right-angle side bottom surface being set to taper is placed in the square position of foundation ditch, all the other positions put the prefabricated abnormity of the strip stake on an empty stomach that bottom surface is set to taper in order, and between the suspended wall of each prefabricated abnormity empty stomach stake, electric welding connects; Reserve steel plate in distance bottom a distance by prefabricated abnormity empty stomach stake horizontal direction to be connected with prefabricated structural slab electric welding, form the structural slab closed continuously herein, by structural slab and special-shaped stake on an empty stomach and be special-shapedly interconnected to form caisset on an empty stomach between stake; In the below of caisset, adopt manipulator to excavate and caisset is sunk; (2) setting more than bottom: vertical direction, the prefabricated abnormity empty stomach stake of the stake of prefabricated abnormity empty stomach and bottom that bottom surface are remained in advance the steel plate welded is alignd and welds; Horizontal direction, two prefabricated abnormity level welding between stake on an empty stomach, at the needs of certain distance according to agent structure, special-shaped stake and prefabricated structural slab are on an empty stomach welded to each other; (3) the described caisset spliced based on Prefabricated hollow stake, can utilize when caisset is constructed the empty stomach of up/down perforation to be unearthed and transport of materials, sink to by empty stomach penetration concrete after predetermined absolute altitude until caisset, or backfilled with earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445305.8A CN105002912A (en) | 2015-07-27 | 2015-07-27 | Construction method for splicing type caisson structure based on prefabricated hollow piles |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510445305.8A CN105002912A (en) | 2015-07-27 | 2015-07-27 | Construction method for splicing type caisson structure based on prefabricated hollow piles |
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| CN105002912A true CN105002912A (en) | 2015-10-28 |
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| CN201510445305.8A Pending CN105002912A (en) | 2015-07-27 | 2015-07-27 | Construction method for splicing type caisson structure based on prefabricated hollow piles |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281888A (en) * | 2020-10-25 | 2021-01-29 | 中铁十二局集团有限公司 | Excavation supporting method for foundation pit caisson |
| CN112982422A (en) * | 2021-02-01 | 2021-06-18 | 中国电建集团市政规划设计研究院有限公司 | Sectional type open caisson construction method |
| CN112982423A (en) * | 2021-02-01 | 2021-06-18 | 中国电建集团市政规划设计研究院有限公司 | Special-shaped open caisson construction method |
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| CN2701985Y (en) * | 2004-02-25 | 2005-05-25 | 北京韩中停车设备有限公司 | Caisson type simple multi-level parking garage |
| CN104264684A (en) * | 2014-09-24 | 2015-01-07 | 厦门磐砻地下工程有限公司 | Pre-fabricated specially-shaped hollow pile for deep foundation pit supporting structure and construction method of pre-fabricated specially-shaped hollow pile |
| KR20150039409A (en) * | 2013-10-02 | 2015-04-10 | (주)천마엔지니어링 | The wall members and underground wall, underground wall construction method using the same |
| CN204356780U (en) * | 2014-09-24 | 2015-05-27 | 厦门磐砻地下工程有限公司 | A kind of prefabricated abnormity stake on an empty stomach for deep foundation pit supporting structure |
-
2015
- 2015-07-27 CN CN201510445305.8A patent/CN105002912A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2701985Y (en) * | 2004-02-25 | 2005-05-25 | 北京韩中停车设备有限公司 | Caisson type simple multi-level parking garage |
| KR20150039409A (en) * | 2013-10-02 | 2015-04-10 | (주)천마엔지니어링 | The wall members and underground wall, underground wall construction method using the same |
| CN104264684A (en) * | 2014-09-24 | 2015-01-07 | 厦门磐砻地下工程有限公司 | Pre-fabricated specially-shaped hollow pile for deep foundation pit supporting structure and construction method of pre-fabricated specially-shaped hollow pile |
| CN204356780U (en) * | 2014-09-24 | 2015-05-27 | 厦门磐砻地下工程有限公司 | A kind of prefabricated abnormity stake on an empty stomach for deep foundation pit supporting structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281888A (en) * | 2020-10-25 | 2021-01-29 | 中铁十二局集团有限公司 | Excavation supporting method for foundation pit caisson |
| CN112982422A (en) * | 2021-02-01 | 2021-06-18 | 中国电建集团市政规划设计研究院有限公司 | Sectional type open caisson construction method |
| CN112982423A (en) * | 2021-02-01 | 2021-06-18 | 中国电建集团市政规划设计研究院有限公司 | Special-shaped open caisson construction method |
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Application publication date: 20151028 |
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