CN102852094B - Construction method for prefabricating composite structure of pier mounting plate pile under open marine environment - Google Patents
Construction method for prefabricating composite structure of pier mounting plate pile under open marine environment Download PDFInfo
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- CN102852094B CN102852094B CN201210319515.9A CN201210319515A CN102852094B CN 102852094 B CN102852094 B CN 102852094B CN 201210319515 A CN201210319515 A CN 201210319515A CN 102852094 B CN102852094 B CN 102852094B
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Abstract
The invention discloses a construction method for prefabricating a composite structure of a pier mounting plate pile under an open marine environment. Layers of walings are arranged; cofferdams formed by steel plate piles are arranged at the peripheries of the walings, and prefabricated piers are hoisted in the cofferdams. Therefore, offshore construction risk can be reduced; the construction efficiency is improved; a dry construction environment is provided for pier installation and node concrete construction; installation of a prefabricated cushion cap is affected by stormy waves due to operation under the open marine environment; after the method is used, the offshore operation time can be effectively prolonged, and all-weather construction can be achieved.
Description
Technical field
The present invention relates to bridge foundation building technology field, refer to particularly be a kind of under the restriction without shielding marine environmental conditions prefabricated pier sheet pile combined structure construction method is installed.
Background technology
Along with the develop rapidly of bridge construction, bridge construction region is progressively expanded to sea, in the face of marine climate is changeable and hydrologic regime complexity waits natural environment, Construction unit proposes pier and adopts the construction technology of " prefabrication standardization, in-site installation assemblingization " to optimize erection procedure.Therefore, pile cap steel casing must be passed through when cushion cap is installed simultaneously, be connected by building node concrete between cushion cap with steel pile casting after being in place.Under nothing shielding marine environment, drag force and wave force are comparatively large, mud is thicker, adopt during the construction of conventional steel plates pile cofferdam and cannot meet stability requirement, therefore, design and a kind ofly ensure that the prefabricated pier of the accurate location of pier and the smooth construction of node concrete installs the key that sheet pile combined structure construction method is bridge foundation construction.
Summary of the invention
Object of the present invention is exactly the deficiency that will solve above-mentioned background technology, provides a kind of construction risk little, and what construction efficiency was high installs sheet pile combined structure construction method without prefabricated pier under shielding marine environment.
Technical scheme of the present invention is: a kind of without pier installation sheet pile combined structure construction method prefabricated under shielding marine environment, it is characterized in that, comprises following steps:
1), at waling reserve guide pile hole site injection guide pile, lift waling subsequently, waling is provided with four layers, and every layer of waling is all located by guide pile;
2), utilize waling suspender and positioning system to waling fine adjustment, make waling be in level;
3), at the equal mounting flange of upper and lower surface of the waling of first floor and the superiors, by pull bar, flange is tentatively fixed in the lateral surfaces of waling, by joints cement mortar in the gap between waling and flange, makes waling and flange complete consolidation;
4), be assembled into the steel sheet pile after entirety, be transported to the peripheral after vibration of waling by steel sheet pile suspender and transfer, entirety is set in waling periphery;
5), in the cofferdam that steel sheet pile surrounds draw water, in the water level decreasing process in cofferdam, on the second layer to the 4th layer of waling, repeat the construction method of step 3 successively;
6), treat to draw water in cofferdam after, hoisting prefabricated pier in cofferdam, and to the node concreting between prefabricated pier and the steel pile casting being set in advance in below prefabricated pier;
7), progressively recharge water in cofferdam subsequently, according to water level rising situation in cofferdam, layering removes the 4th layer to second layer waling successively;
8) vibrate, in batches and pull out steel sheet pile to from steady, make monolithic devices steel sheet pile depart from waling periphery;
9), remove first floor waling, and extract guide pile.
In the present invention, described steel sheet pile is Z-shape steel sheet pile, and it is gear-like that Z-shape steel sheet pile is assembled into overall rear external surface, and Z-shape steel sheet pile can adapt to larger radial construction deviation, overall steel sheet pile can be transferred smoothly along waling outer rim, and guarantee that steel sheet pile is closely connected with waling structure under stress.
In the present invention, be assembled into the column structure that the steel sheet pile after entirety is hollow, like this can under outer load condition structure stress more reasonable.
In the present invention, also connected by dismountable tube connector between waling.
The invention has the advantages that:
1, the cofferdam that guide pile and steel sheet pile are formed jointly is born current, the impact of wave and steel sheet pile periphery soil and is acted on, and can guarantee that integral plate pile cofferdam in weak mud, entirety can not occur and topple;
2, that steel sheet pile entirety is transferred, entirety is executed is heavy, entirety hangs, and avoids in steel sheet pile cofferdam construction easily to occur that steel sheet pile tilts, band stake, not easily to close up etc. the appearance of situation, and can reuse.
The present invention can reduce offshore construction risk, improve construction efficiency, for pier installation and node concrete construction provide dry construction condition; Due to operation under nothing shielding marine environment, the installation of prefabricated cushion cap, by the impact of stormy waves, after using the method, effectively can extend Potential Working Time For Operation At Sea, realize all-weather construction.
Accompanying drawing explanation
Fig. 1 is generalized section after the assembled entirety of waling in the present invention;
Fig. 2 is elevational schematic view after the assembled entirety of waling in the present invention;
Fig. 3 is the Integral Steel sheet pile cofferdam layout schematic diagram in conjunction with prefabricated pier in the present invention;
Fig. 4 is in conjunction with prefabricated pier Integral Steel sheet pile cofferdam generalized section in the present invention.
In figure: the prefabricated pier of 110-; 120-Z shaped steel plate pile; 130-waling; 140-guide pile; 150-flange; 160-pull bar; 170-cement mortar; 180-node concrete; 190-steel sheet pile suspender; 200-vibrating hammer; 210-vibrating hammer fixture; 220-leading truck; 230-waling suspender and positioning system; 240-waling suspender hanger; 250-waling hanger; 260-joint steel pipe.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, is convenient to be well understood to the present invention, but they do not form restriction to the present invention.
One prefabricated pier under nothing shielding marine environment installs sheet pile combined structure construction method as illustrated in the drawing, comprises following steps:
1), at waling 130 reserve guide pile hole site injection guide pile 140, lift waling 130 subsequently, waling 130 is provided with four layers, and every layer of waling is all located by guide pile 140;
2), utilize waling suspender and positioning system 230 pairs of waling 130 fine adjustments, make waling 130 be in level.Be specially: be provided with waling hanger 250 in waling 130 upper end, waling suspender and positioning system 230 are connected with waling hanger 250 by waling suspender hanger 240, and then realize the fine adjustment to waling 130.
3), at the equal mounting flange 150 of upper and lower surface of the waling of first floor and the superiors, flange 150 is made tentatively to be fixed in the lateral surfaces of waling 130 by pull bar 160, by joints cement mortar 170 in the gap between waling 130 and flange 150, waling 130 and flange 150 is made to complete consolidation;
4), be assembled into the entirety of the steel sheet pile 120 after entirety in cylindrical hollow structure, like this can under outer load condition structure stress more reasonable, be transported to the peripheral after vibration of waling 130 by steel sheet pile suspender 190 and transfer, entirety is set in waling periphery;
In this step: described steel sheet pile 120 is Z-shape steel sheet pile, it is gear-like that Z-shape steel sheet pile is assembled into overall rear external surface, Z-shape steel sheet pile can adapt to larger radial construction deviation, and overall steel sheet pile can be transferred smoothly along waling outer rim, and guarantees that steel sheet pile is closely connected with waling structure under stress;
In this step, vibrating hammer 200 is provided with between steel sheet pile suspender 190 and steel sheet pile 120, be provided with the vibrating hammer fixture 210 for fixing vibrating hammer 200 in vibrating hammer 200 both sides, be arranged with leading truck 220 in steel sheet pile 120 outer, leading truck 220 can make steel sheet pile 120 keep moving on the whole or transferring.
5), in the cofferdam that steel sheet pile 120 surrounds draw water, in the water level decreasing process in cofferdam, on the second layer to the 4th layer of waling, repeat the construction method of step 3 successively; First floor is also connected by dismountable tube connector 260 between the 4th layer of waling, and tube connector 260 can connect support further to waling;
6), treat to draw water in cofferdam after, in hoisting prefabricated pier 110 to cofferdam, and to node 180 concreting between prefabricated pier 110 and the steel pile casting being set in advance in below prefabricated pier 110;
7), progressively recharge water in cofferdam subsequently, according to water level rising situation in cofferdam, layering removes the 4th layer to second layer waling successively;
8) vibrate, in batches and pull out steel sheet pile 120 to from steady, make monolithic devices steel sheet pile depart from waling periphery;
9), remove first floor waling, and extract guide pile.
Repeat aforesaid operations and drop into the construction of next pier position, reusing of this structure can be realized.
The present invention is provided with multilayer waling, and outside waling, be arranged with the cofferdam that steel sheet pile is formed, hoisting prefabricated pier in cofferdam, can reduce offshore construction risk, improve construction efficiency, for pier installation and node concrete construction provide dry construction condition; Due to operation under nothing shielding marine environment, the installation of prefabricated cushion cap, by the impact of stormy waves, after using the method, effectively can extend Potential Working Time For Operation At Sea, realize all-weather construction.
Claims (5)
1. without prefabricated pier under shielding marine environment, sheet pile combined structure construction method is installed, it is characterized in that, comprise following steps:
1), at waling reserve guide pile hole site injection guide pile, lift waling subsequently, waling is provided with four layers, and every layer of waling is all located by guide pile;
2), utilize waling suspender and positioning system to waling fine adjustment, make waling be in level;
3), at the equal mounting flange of upper and lower surface of the waling of first floor and the superiors, by pull bar, flange is tentatively fixed in the lateral surfaces of waling, by joints cement mortar in the gap between waling and flange, makes waling and flange complete consolidation;
4), be assembled into the steel sheet pile after entirety, be transported to the peripheral after vibration of waling by steel sheet pile suspender and transfer, entirety is set in waling periphery; Described steel sheet pile is Z-shape steel sheet pile, and it is gear-like that Z-shape steel sheet pile is assembled into overall rear external surface;
5), in the cofferdam that steel sheet pile surrounds draw water, in the water level decreasing process in cofferdam, on the second layer to the 4th layer of waling, repeat the construction method of step 3 successively;
6), treat to draw water in cofferdam after, hoisting prefabricated pier in cofferdam, and to the node concreting between prefabricated pier and the steel pile casting being set in advance in below prefabricated pier;
7), progressively recharge water in cofferdam subsequently, according to water level rising situation in cofferdam, layering removes the 4th layer to second layer waling successively;
8) vibrate, in batches and pull out steel sheet pile to from steady, make monolithic devices steel sheet pile depart from waling periphery;
9), remove first floor waling, and extract guide pile.
2. according to claim 1 without pier installation sheet pile combined structure construction method prefabricated under shielding marine environment, it is characterized in that, be assembled into the column structure that the steel sheet pile after entirety is hollow.
3. according to claim 1 without pier installation sheet pile combined structure construction method prefabricated under shielding marine environment, it is characterized in that, connected by dismountable tube connector between described waling.
4. according to claim 1 without pier installation sheet pile combined structure construction method prefabricated under shielding marine environment, it is characterized in that, described waling upper end is provided with waling hanger, and waling suspender and positioning system are connected with waling hanger by waling suspender hanger.
5. according to claim 1 without pier installation sheet pile combined structure construction method prefabricated under shielding marine environment, it is characterized in that, vibrating hammer is provided with between steel sheet pile suspender and steel sheet pile, be provided with the vibrating hammer fixture for fixing vibrating hammer in vibrating hammer both sides, be arranged with leading truck in steel sheet pile outer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210319515.9A CN102852094B (en) | 2012-08-31 | 2012-08-31 | Construction method for prefabricating composite structure of pier mounting plate pile under open marine environment |
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| CN201210319515.9A CN102852094B (en) | 2012-08-31 | 2012-08-31 | Construction method for prefabricating composite structure of pier mounting plate pile under open marine environment |
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| CN102852094B true CN102852094B (en) | 2015-03-18 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775446B (en) * | 2014-01-15 | 2021-06-15 | 广东海上城建控股发展有限公司 | Barrel pier for fixing water structure and installation and construction method thereof |
| CN103835301B (en) * | 2014-03-10 | 2015-08-19 | 中铁大桥局集团第五工程有限公司 | Marine by head difference fast dismantling except fore shaft steel cofferdam construction method |
| CN104120699B (en) * | 2014-05-20 | 2016-04-27 | 中交第二航务工程局有限公司 | Steel sheet pile bucket base man-made island dado structure |
| CN104264586B (en) * | 2014-09-05 | 2016-02-03 | 中国建筑第六工程局有限公司 | The drainage and construction method of narrow estuary U-shaped bay bridge construction |
| CN107558377A (en) * | 2017-09-13 | 2018-01-09 | 中国建筑第五工程局有限公司 | A kind of suspension type monorail pier stud installation method |
| CN110847201B (en) * | 2019-10-18 | 2021-05-25 | 中交第二航务工程局有限公司 | Open caisson temporary outer wall system capable of being quickly assembled and disassembled and construction method thereof |
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| JP2007205077A (en) * | 2006-02-03 | 2007-08-16 | Shimizu Corp | Temporary coffering method |
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| CN1635223A (en) * | 2003-12-26 | 2005-07-06 | 上海市基础工程公司 | Bridge cofferdam waterstop construction process |
| JP2007205077A (en) * | 2006-02-03 | 2007-08-16 | Shimizu Corp | Temporary coffering method |
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