CN202131602U - Steel sheet pile cofferdam structure - Google Patents
Steel sheet pile cofferdam structure Download PDFInfo
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- CN202131602U CN202131602U CN201120150153U CN201120150153U CN202131602U CN 202131602 U CN202131602 U CN 202131602U CN 201120150153 U CN201120150153 U CN 201120150153U CN 201120150153 U CN201120150153 U CN 201120150153U CN 202131602 U CN202131602 U CN 202131602U
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Abstract
The utility model discloses a steel sheet pile cofferdam structure, comprising steel protective cylinders, several layers of purlins, and steel plate piles inserted at the periphery of the purlins, supports are welded to the lower parts of the steel protective cylinders to form a temporary supporting platform, the upper and lower two layers of purlins are connected via vertical ribs and 45 degree scissor supports, the top of the steel protective cylinders are fixedly provided with upper outriggers, the upper outriggers are provided with hanging devices, lower outriggers are welded to the lower part of the most lower layer of purlin, and lower outriggers are hung to hanging ropes of the hanging devices. The steel sheet pile cofferdam structure is advantageous in that, on the premise that a large-scale hoisting device is not used or a large-scale prefabricated place is not used, the hanging system is used to install the purlins, the vertical ribs, and the 45 degree scissor supports, quality and stability of the steel sheet pile cofferdams are guaranteed, an underwater bridge pier high pile platform is constructed with lowest cost and lowest construction risk, and practicality and economy of construction technology of underwater steel sheet pile cofferdams are improved.
Description
Technical field
The utility model relates to a kind of water light plate pile cofferdam structure that is used for, and this structure can be applicable to highway and municipal road and bridge engineering, the steel sheet pile cofferdam construction in fields such as hydraulic engineering.
Background technology
At present in the construction of road and bridge construction; The construction of pile foundation support table can be divided into two types in the cross a river bridge water: one, cast-in-place method construction in cofferdam and the construction of prefabricated installation method; What wherein the underwater support table of exhausted big number adopted is the cast-in-place method construction in cofferdam, and used cofferdam is adopted earth rock cofferdam, steel bar concrete open caisson cofferdam, steel bushing (hanging) cofferdam, steel sheet-pile cofferdam etc. usually.
1, the job practices of earth rock cofferdam often receives the depth of water and job site condition restriction, and difficulty of construction is big, construction costs is high;
2, the job practices in steel bar concrete open caisson cofferdam; Because open caisson sinks easily; Type selecting to the main structural engineering stake is restricted; And prefabricated, transportation and construction reinforced bar concrete open caisson need the prefabricated component place of certain scale and bigger crane gear, has construction costs height, shortcoming long in time limit, ineffective;
3, the job practices of steel bushing (hanging) cofferdam, prefabricated, the transportation and the construction of steel case need the prefabricated component place of certain scale and bigger crane gear equally, and steel using amount is bigger, and construction is accomplished the most of steel in back and is difficult to reclaim, the construction costs height;
4, the job practices of conventional steel sheet-pile cofferdam, because the cofferdam resistance to overturning is relatively poor, applicability receives the restriction of the depth of water, the welding quality of enclosing the member of purlin and interior support simultaneously is not easy to guarantee that the cofferdam construction risk is bigger.
Based on above-mentioned situation; Need design pile foundation in a kind of new water and build the cofferdam of cushion cap foundation construction, the construction in this cofferdam can be suited measures to local conditions, and significantly reduces the restriction in place, job site; It is bigger to solve steel using amount simultaneously; And most of steel are difficult to reclaim, and use heavy lifting equipment on a large scale, the difficult problem that construction cost and difficulty are higher.
The utility model content
The utility model provides a kind of steel sheet-pile cofferdam structure in order to overcome the deficiency that above prior art exists.The utility model is not using large-scale crane hoisting equipment and is utilizing under the prerequisite in large-scale prefabricated place; Utilize hangar system to install and enclose purlin, perpendicular rib and 45 degree bridgings; Guarantee the quality and stability of steel sheet-pile cofferdam; With minimum cost and the minimum construction risk bridge pier highrise pile cap in the water of constructing, improve the feasibility of water light plate pile cofferdam construction technology and economical.
The purpose of the utility model realizes through following technical scheme: this steel sheet-pile cofferdam structure; It is characterized in that: comprise that steel casing, several layers enclose purlin and slotting beating at the steel sheet pile that encloses the purlin periphery, steel casing bottom welding support forms interim rest platform, and two-layer up and down enclosing between the purlin is connected through perpendicular rib and 45 degree bridgings; Steel casing top is fixed with outrigger; Last outrigger is provided with the equipment of hanging, and orlop encloses and is welded with down outrigger below the purlin, the lifting rope of the hanging equipment outrigger that plays down.
As a kind of preferred structure, said support is meant four shaped steel that level 45 degree pass steel casing bottom and weld together with the steel casing.
As a kind of preferred structure, said many perpendicular ribs are welded between the two-layer up and down rectangle housing that encloses purlin, and 45 degree bridgings are 4 of every layer of welding, and perpendicular rib and 45 degree bridgings are shaped steel.
In order to strengthen enclosing the intensity of purlin; Said enclose be welded with 4 angle braces in the purlin, several are to support and some to Eight characters support, and support, angle brace and Eight characters support are shaped steel, 4 angle braces are positioned at and enclose 4 angles of purlin; Support is positioned at encloses in the middle of the purlin, each arranges two pairs of Eight characters supports to the two ends of support.To the number of support, can confirm according to the area that encloses purlin.
As a kind of preferred structure, said steel casing welded top has 2 to go up outrigger, and hangar system is 4 jack, goes up 2 jack of fixed installation on the outrigger for every; Orlop encloses and is welded with 2 following outriggers and 4 steel pad bosses below the purlin, and 2 following outriggers are welded on 4 angle braces of orlop, and the bottom surface of 4 steel pad bosses and 4 angle braces is positioned at same horizontal plane; 1 jacking piece of each jack configuration, 1 are hung piece, 2 lifting ropes, 2 upper limit nuts and 2 lower limit nuts; The jacking piece is positioned at above the jack; 2 upper limit nuts are pressed in above the jacking piece, and 2 lower limit nuts are pressed in above the outrigger, and 2 upper limit nuts and 2 lower limit nuts are screwed on 2 lifting ropes; The lower end of 2 lifting ropes connects hangs piece, hangs the piece support and down outrigger.
According to concrete execution conditions, said steel casing is 6, and enclosing purlin is 5 layers, and 45 degree bridgings are 4 layers.
The contrary way job practices of above-mentioned steel sheet-pile cofferdam structure may further comprise the steps:
Step 1: the size through enclosing purlin and the position in the steel casing center of circle, make control point, the position of enclosing four angle points of purlin as the location, cofferdam according to the coordinate positioning of job site;
Step 2: utilize grab bucket, suction dredge to dig the riverbed soil layer in the scope of cofferdam clearly, make riverbed soil layer absolute altitude enclose the low 0.5m of purlin absolute altitude than orlop;
Step 3: fixing steel casing, steel casing bottom welding support forms interim rest platform;
Step 4: the undermost purlin that encloses of constructing, and install 2 to support, 4 angle braces and 4 pairs of Eight characters supports;
Step 5: jack is installed, and jack connects the undermost purlin that encloses of support, and then upwards 30cm unclamps the lower limit nut; Jack is to transferring 30cm, and it is stressed that transfer the lower limit nut this moment to, and the upper limit nut upwards unclamps 30cm then; Jack upwards resets, and it is stressed to transfer jack to, according to this process circulation; 4 jack synchronization liftings, the distance of at every turn transferring are 30cm, enclose purlin until orlop and transfer and put in place;
Step 6: enclosing purlin with orlop is operation platform, orlop and layer second from the bottom is installed is enclosed perpendicular rib, 45 degree bridgings between the purlin, accomplishes the installation that layer second from the bottom encloses purlin again, transfers then, and orlop encloses purlin at this moment, layer second from the bottom encloses purlin and transfers together; Successively install from the bottom to top with this process, enclose purlin until first floor and sink to the predetermined absolute altitude in the water;
Step 7: utilize and enclose purlin as guide, insert at periphery and beat steel sheet pile, steel sheet pile is near enclosing purlin;
Step 8: guaranteeing under the consistent situation of inside and outside hydraulic pressure, inhaling mud, cleaning riverbed to bottom concrete ground, the bottom concrete under water of constructing;
Step 9: to drawing water in the steel sheet-pile cofferdam, draw water to per pass and enclose under the purlin absolute altitude behind the 0.5m, with to enclose the purlin welding fixing, the orlop until the cofferdam encloses purlin with steel sheet pile;
Step 10: the construction pile foundation is built the cushion cap basis on bottom concrete.
In the said step 7: steel sheet pile vertically inserts stake position along enclosing purlin, and steel sheet pile and the gap of enclosing purlin are less than 20mm.
The utility model has following advantage with respect to prior art:
1, this steel sheet-pile cofferdam structure and contrary way job practices thereof are suited measures to local conditions, and make full use of pile foundation steel casing in the water; Use jack, limit screw cap up and down, realize the discontinuity of enclosing purlin is transferred, avoided whole steel to enclose purlin or the large-scale prefabricated place of the prefabricated needs of steel bushing case; Put through jack is heavy simultaneously; Improve the positioning accuracy of enclosing purlin, and avoided use large-tonnage crane gear, practiced thrift hoisting cost.The steel sheet-pile cofferdam of the utility model is applicable to that pile foundation is built the basic construction of cushion cap in the water in the road and bridge construction.
2, compare with the construction of steel boxed cofferdam and steel suspended box cofferdam, this method has effectively reduced permanent construction and has used steel because purlin all recyclings are basically enclosed in steel sheet pile and interior support, and energy-saving effect is obvious, has practiced thrift construction cost widely.
3, compare with the steel sheet pile cofferdam construction of routine; The perpendicular rib of the utility model, 45 degree bridgings are on the water surface, to weld; Each layer encloses purlin and also all is on the water surface, to weld to support, angle brace, Eight characters support, helps the control to welding quality like this, and the construction period of steel sheet-pile cofferdam is shortened; Improve the resistance to overturning of steel sheet-pile cofferdam, reduced difficulty of construction.
Description of drawings
Fig. 1 is the vertical view that orlop encloses purlin in the steel sheet-pile cofferdam structure of the utility model.
Fig. 2 is steel sheet-pile cofferdam and the vertical view of hanging equipment.
Fig. 3 is the elevation of steel sheet-pile cofferdam.
Fig. 4 is the integral construction elevation of steel sheet-pile cofferdam.
Label and title are corresponding as follows in Fig. 1～4:
| 1 | The |
2 | Enclose |
| 3 | |
4 | |
| 5 | 45 |
6 | |
| 7 | Following |
8 | Lifting rope |
| 9 | Support | 10 | To support |
| 11 | Angle brace | 12 | Eight characters support |
| 13 | |
14 | |
| 15 | The |
16 | |
| 17 | The |
18 | The lower limit nut |
| 19 | Bottom concrete | 20 | Pile foundation is built the cushion cap basis |
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
In the present embodiment, the material of employing is:
Support: 2I 45a i shaped steel, long 6m.
Jack: 120 tons.
Steel pad boss: 2I 45a i shaped steel.
Following outrigger: 2I 45a i shaped steel, long 16m.
Last outrigger: 2I 45a i shaped steel, long 11m.
Hang piece: 2I 45a i shaped steel.
Jacking piece: 2I 45a i shaped steel.
Steel sheet pile: close button Larsen steel sheet pile SKSP-IV type, long 24m.
Lifting rope: diameter 32mm, the smart indented bars lifting rope of pricking.
Steel casing: diameter 280mm.
Steel sheet-pile cofferdam structure shown in Fig. 1～4; Comprise that steel casing, 5 layers enclose purlin and insert and beat at the steel sheet pile that encloses the purlin periphery, steel casing bottom welding support forms interim rest platform, and two-layer up and down enclosing spent bridgings through perpendicular rib and 45 between the purlin and be connected; Steel casing top is fixed with outrigger; Last outrigger is provided with the equipment of hanging, and orlop encloses and is welded with down outrigger below the purlin, the lifting rope of the hanging equipment outrigger that plays down.
Support is meant four shaped steel that level 45 degree pass steel casing bottom and weld together with the steel casing.
Many perpendicular ribs are welded between the two-layer up and down rectangle housing that encloses purlin, and 45 degree bridgings are 4 of every layer of welding, and perpendicular rib and 45 degree bridgings are shaped steel.
Enclose and be welded with 2 in the purlin support, 4 angle braces and 4 pairs of Eight characters supports are shaped steel to support, angle brace and Eight characters support, 2 are positioned at support and enclose in the middle of the purlin, and 4 angle braces are positioned at and enclose 4 angles of purlin, and 4 pairs of Eight characters supports are positioned at 2 two ends to support.
Steel casing welded top has 2 to go up outrigger, and hangar system is 4 jack, goes up 2 jack of fixed installation on the outrigger for every; Orlop encloses and is welded with 2 following outriggers and 4 steel pad bosses below the purlin, and 2 following outriggers are welded on 4 angle braces of orlop, and the bottom surface of 4 steel pad bosses and 4 angle braces is positioned at same horizontal plane; 1 jacking piece of each jack configuration, 1 are hung piece, 2 lifting ropes, 2 upper limit nuts and 2 lower limit nuts; The jacking piece is positioned at above the jack; 2 upper limit nuts are pressed in above the jacking piece, and 2 lower limit nuts are pressed in above the outrigger, and 2 upper limit nuts and 2 lower limit nuts are screwed on 2 lifting ropes; The lower end of 2 lifting ropes connects hangs piece, hangs the piece support and down outrigger.
The steel casing is 6, and enclosing purlin is 5 layers, and 45 degree bridgings are 4 layers.
The contrary way job practices of above-mentioned steel sheet-pile cofferdam structure may further comprise the steps:
Step 1: the size through enclosing purlin and the position in the steel casing center of circle, make control point, the position of enclosing four angle points of purlin as the location, cofferdam according to the coordinate positioning of job site;
Step 2: utilize grab bucket, suction dredge to dig the riverbed soil layer in the scope of cofferdam clearly, make riverbed soil layer absolute altitude enclose the low 0.5m of purlin absolute altitude than orlop;
Step 3: fixing steel casing, steel casing bottom welding support forms interim rest platform;
Step 4: the undermost purlin that encloses of constructing, and install 2 to support, 4 angle braces and 4 pairs of Eight characters supports;
Step 5: jack is installed, and jack connects the undermost purlin that encloses of support, and then upwards 30cm unclamps the lower limit nut; Jack is to transferring 30cm, and it is stressed that transfer the lower limit nut this moment to, and the upper limit nut upwards unclamps 30cm then; Jack upwards resets, and it is stressed to transfer jack to, according to this process circulation; 4 jack synchronization liftings, the distance of at every turn transferring are 30cm, enclose purlin until orlop and transfer and put in place;
Step 6: enclosing purlin with orlop is operation platform, orlop and layer second from the bottom is installed is enclosed perpendicular rib, 45 degree bridgings between the purlin, accomplishes the installation that layer second from the bottom encloses purlin again, transfers then, and orlop encloses purlin at this moment, layer second from the bottom encloses purlin and transfers together; Successively install from the bottom to top with this process, enclose purlin until first floor and sink to the predetermined absolute altitude in the water;
Step 7: utilize and enclose purlin as guide, insert at periphery and beat steel sheet pile, steel sheet pile is near enclosing purlin;
Step 8: guaranteeing under the consistent situation of inside and outside hydraulic pressure, inhaling mud, cleaning riverbed to bottom concrete ground, the bottom concrete under water of constructing;
Step 9: to drawing water in the steel sheet-pile cofferdam, draw water to per pass and enclose under the purlin absolute altitude behind the 0.5m, with to enclose the purlin welding fixing, the orlop until the cofferdam encloses purlin with steel sheet pile;
Step 10: the construction pile foundation is built the cushion cap basis on bottom concrete.
In the said step 7: steel sheet pile vertically inserts stake position along enclosing purlin, and steel sheet pile and the gap of enclosing purlin are less than 20mm.
The above-mentioned specific embodiment is the preferred embodiment of the utility model; Can not limit the utility model; Other any change or other equivalent substitute mode that does not deviate from the technical scheme of the utility model and made is included within the protection domain of the utility model.
Claims (6)
1. steel sheet-pile cofferdam structure; It is characterized in that: comprise that steel casing, several layers enclose purlin and slotting beating at the steel sheet pile that encloses the purlin periphery, steel casing bottom welding support forms interim rest platform, and two-layer up and down enclosing between the purlin is connected through perpendicular rib and 45 degree bridgings; Steel casing top is fixed with outrigger; Last outrigger is provided with the equipment of hanging, and orlop encloses and is welded with down outrigger below the purlin, the lifting rope of the hanging equipment outrigger that plays down.
2. steel sheet-pile cofferdam structure according to claim 1 is characterized in that: said support is meant four shaped steel that level 45 degree pass steel casing bottom and weld together with the steel casing.
3. steel sheet-pile cofferdam structure according to claim 1 is characterized in that: said many perpendicular ribs are welded between the two-layer up and down rectangle housing that encloses purlin, and 45 degree bridgings are 4 of every layer of welding, and perpendicular rib and 45 degree bridgings are shaped steel.
4. steel sheet-pile cofferdam structure according to claim 1; It is characterized in that: said enclose be welded with 4 angle braces in the purlin, several are to support and some the Eight characters is supportted; Support, angle brace and Eight characters support are shaped steel; 4 angle braces are positioned at and enclose 4 angles of purlin, support is positioned at encloses in the middle of the purlin, and each arranges two pairs of Eight characters supports to the two ends of support.
5. steel sheet-pile cofferdam structure according to claim 4 is characterized in that: said steel casing welded top has 2 to go up outrigger, and hangar system is 4 jack, goes up 2 jack of fixed installation on the outrigger for every; Orlop encloses and is welded with 2 following outriggers and 4 steel pad bosses below the purlin, and 2 following outriggers are welded on 4 angle braces of orlop, and the bottom surface of 4 steel pad bosses and 4 angle braces is positioned at same horizontal plane; 1 jacking piece of each jack configuration, 1 are hung piece, 2 lifting ropes, 2 upper limit nuts and 2 lower limit nuts; The jacking piece is positioned at above the jack; 2 upper limit nuts are pressed in above the jacking piece, and 2 lower limit nuts are pressed in above the outrigger, and 2 upper limit nuts and 2 lower limit nuts are screwed on 2 lifting ropes; The lower end of 2 lifting ropes connects hangs piece, hangs the piece support and down outrigger.
6. according to each described steel sheet-pile cofferdam structure of claim 1～5, it is characterized in that: said steel casing is 6, and enclosing purlin is 5 layers, and 45 degree bridgings are 4 layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120150153U CN202131602U (en) | 2011-05-12 | 2011-05-12 | Steel sheet pile cofferdam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120150153U CN202131602U (en) | 2011-05-12 | 2011-05-12 | Steel sheet pile cofferdam structure |
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| Publication Number | Publication Date |
|---|---|
| CN202131602U true CN202131602U (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120150153U Expired - Lifetime CN202131602U (en) | 2011-05-12 | 2011-05-12 | Steel sheet pile cofferdam structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191777A (en) * | 2011-05-12 | 2011-09-21 | 广州市市政集团有限公司 | Steel sheet pile coefferdam structure and topdown construction method thereof |
| CN107859034A (en) * | 2017-11-14 | 2018-03-30 | 中铁十局集团第工程有限公司 | Large diameter pile foundation spillage immediate processing method |
| CN112459090A (en) * | 2020-11-11 | 2021-03-09 | 江苏玖沐精工装备科技有限公司 | Novel steel hanging box cofferdam construction method based on Larsen steel sheet pile |
-
2011
- 2011-05-12 CN CN201120150153U patent/CN202131602U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191777A (en) * | 2011-05-12 | 2011-09-21 | 广州市市政集团有限公司 | Steel sheet pile coefferdam structure and topdown construction method thereof |
| CN102191777B (en) * | 2011-05-12 | 2012-12-12 | 广州市市政集团有限公司 | Steel sheet pile coefferdam structure and topdown construction method thereof |
| CN107859034A (en) * | 2017-11-14 | 2018-03-30 | 中铁十局集团第工程有限公司 | Large diameter pile foundation spillage immediate processing method |
| CN112459090A (en) * | 2020-11-11 | 2021-03-09 | 江苏玖沐精工装备科技有限公司 | Novel steel hanging box cofferdam construction method based on Larsen steel sheet pile |
| CN112459090B (en) * | 2020-11-11 | 2022-03-25 | 江苏玖沐精工装备科技有限公司 | Novel steel hanging box cofferdam construction method based on Larsen steel sheet pile |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120201 Effective date of abandoning: 20130227 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120201 Effective date of abandoning: 20130227 |
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| RGAV | Abandon patent right to avoid regrant |