CN103015455B - Bridge pile-bucket combined foundation and construction method thereof - Google Patents
Bridge pile-bucket combined foundation and construction method thereof Download PDFInfo
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- CN103015455B CN103015455B CN201210125399.7A CN201210125399A CN103015455B CN 103015455 B CN103015455 B CN 103015455B CN 201210125399 A CN201210125399 A CN 201210125399A CN 103015455 B CN103015455 B CN 103015455B
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Abstract
The invention discloses a bridge pile-bucket combined foundation and a construction method thereof, which relate to bridge construction technology. The bridge pile-bucket combined foundation comprises a bucket and bored piles, and is characterized in that: the wall of the bucket is provided with vertical spaced pile holes, a first partition is arranged on an inner bucket wall to divide the cavity of the bucket wall into an upper cavity and a lower cavity, a second partition is arranged in the upper cavity to divide the upper cavity into partitioned upper cavity units, and the center of the second partition is provided with a working hole, which runs through the first partition and communicates with the lower cavity. Since the bridge pile-bucket combined foundation combines the bucket foundation and the bored piles together, the vertical bearing capability of the bucket foundation is enhanced, and the post-construction settlement of the foundation is reduced. Because the bucket foundation serves as a bored pile construction platform, in the process of pile foundation construction, a cofferdam does not need to be built any more, pile casings do not need to be settled any more, and consequently, not only is the size of the pile foundation reduced, but also the construction cost is greatly reduced. The invention has low requirement on construction equipment, water injection in the partitioned cavities is adopted as a foundation-sinking and deflection-correcting measure in the process of construction, and the problem of difficult deflection correction in the sinking process of the bucket foundation is solved.
Description
Technical field
The invention belongs to bridge Construction Technology, be specifically related to a kind of Bridge Pile bucket combination foundation and construction method thereof.
Background technology
Barrel base has the advantages such as load environment is applied widely, investment cost is low, the engineering time is short, in ocean engineering, has more application.But because its vertical bearing capacity is not enough, settlement after construction is large, and heavyly to pass through in process the reasons such as correction difficulty, it there is no method as bridge foundation.
And pile foundation is as the widely used bridge foundation form of one, have vertical bearing capacity high, the features such as construction technology is simple, but as bridge deepwater foundation, its scale will be very huge, and need to set up huge cofferdam more during pile foundation construction, cost is higher.
Summary of the invention
The Bridge Pile bucket combination foundation that the object of the present invention is to provide a kind of vertical bearing capacity high and construction method thereof, to solve the problem.
The technical scheme of Bridge Pile bucket combination foundation of the present invention is: Bridge Pile bucket combination foundation, be made up of staving and drilled pile, on barrel body wall, vertical spacing is provided with stake holes, inner wall of barrel is provided with the first dividing plate, and barrel body wall inner chamber is separated into upper cavity and lower chamber by the first dividing plate, is provided with second partition in upper cavity, upper cavity is separated the upper cavity unit in separating separately by second partition, second partition center is provided with operation hole, runs through the first dividing plate, is communicated with lower chamber.
Upper cavity is separated at least four upper cavity unit by described second partition.
The vertical through second partition in described operation hole and the first dividing plate.
Reserved stake holes between described inner wall of barrel and outer wall.
Described lower chamber and upper cavity unit all possess watertightness, meet and carry out pouring into/water-pumping/draining job requirements in foundation construction process.
The vertical through second partition in operation hole and the first dividing plate simplify structure, and constructability operates.
Carry out bored pile construction in reserved stake holes, realize the connection of stake and staving.
The technical scheme of beam stake bucket combination foundation construction method of the present invention is: the steps include:
1, beam stake bucket combination foundation structure dock is pre-formed;
2, remove basic soft layer, excavation foundation trench, and carry out foundation bed treatment;
3, inflate in the lower chamber of beam stake bucket combination foundation structure, form the air supporting of beam stake bucket combination foundation structure, and towage is to sinking waters;
4, beam stake bucket combination foundation structure location, heaving pile;
5, get rid of the air in beam stake bucket combination foundation structure, beam stake bucket combination foundation structure is sunk;
6, to water filling in upper cavity, beam stake bucket combination foundation structure continues heavy passing through;
7, after mud face is sunk in the barrel body wall lower surface of beam stake bucket combination foundation structure, lower chamber forms enclosure space, the water in pump drainage lower chamber, and beam stake bucket combination foundation structure continues to sink;
8, after beam stake bucket combination foundation structure sinks to putting in place, in upper cavity, water filling completely, carries out basic precompressed, carries out basic protection against erosion process;
9, castinplace pile drilling construction is carried out by basic stake holes;
10, in basic stake holes and castinplace pile boring, discharge reinforcing cage, concreting, complete pile foundation construction.
Basic precompressed described in step 8 is by operation hole to mud jacking between lower chamber and bedding, to strengthen in lower chamber core bearing capacity and is connected with the first dividing plate.
While water in step 7 in pump drainage lower chamber, water filling in upper cavity.
Described in step 6 or step 8 or step 7 to water filling in upper cavity be: be even water filling in the upper unit cavity separated separately, regulate waterflood injection rate in each upper unit cavity that beam stake bucket combination foundation structure is steadily sunk.
Step 6 or step 7 central sill stake bucket combination foundation structure carry out barrel body wall and the second partition height that connects while sinking lengthens.
After step 10, after carrying out dry preservative treatment in upper cavity, barrel body wall builds top board.
The present invention is suitable as the bridge foundation in deep water waters under thick-covering condition, and its structure is simple, reasonable stress, and construction costs is low, easy construction, requires low to construction equipment, is easy to correction.
Compared with prior art, advantage of the present invention is:
1, Bridge Pile bucket combination foundation is prefabricated in dock, and design staving possesses air supporting stability, can realize overall air supporting.Avoid and the demand of basis to above-water large-scale hanging device is set.
2, Bridge Pile bucket combination foundation passes through power as heavy using the deadweight+water injection ballast+various ways such as negative pressure that draw water, can guarantee that staving sinks to putting in place.
3, pass through mode by the waterflood injection rate adjusted in each upper cavity unit to regulate staving to sink when staving sinks, solve the problem of barrel base correction difficulty.
4, Bridge Pile bucket combination foundation does not need to set up large-scale cofferdam, and drilled pile construction does not need sinking steel pile casting simultaneously, greatly reduces engineering cost.
5, barrel base and Bored Pile Foundation are combined, played respective advantage, enhanced basic vertical bearing capacity, reduce settlement after construction.
6, stake holes reserved by bucket wall, as drilled pile construction place, and easy construction; Can carry out in corresponding stake holes process of fetching earth when staving sinks difficulty or the larger inclination of appearance simultaneously.
Accompanying drawing explanation
Fig. 1 is the sectional elevation structural representation after the present invention has constructed;
Fig. 2 is staving plane structure schematic diagram in the present invention;
Fig. 3 is foundation trench excavation process schematic diagram in the present invention;
Fig. 4 is staving air supporting towage schematic diagram in the present invention;
Fig. 5 is staving location schematic diagram in the present invention;
Fig. 6 is the schematic diagram that in the present invention, staving exhaust is sunk;
Fig. 7 is the schematic diagram that in the present invention, staving relies on deadweight and the water filling of upper cavity unit to sink;
Fig. 8 is that in the present invention, staving forms negative pressure by the water suction of operation hole, and simultaneously at upper cavity unit water injection ballast, staving sinks and connects high schematic diagram;
Fig. 9 be in the present invention staving heavy pass through put in place after, by the schematic diagram of operation hole to mud jacking in lower chamber;
Figure 10 is the schematic diagram of drilled pile construction in the present invention;
Figure 11 is that the present invention completes top board and builds rear structural representation.
In figure: 1, staving, 2, drilled pile, 3, bucket outer wall, 4, inner wall of barrel, the 5, first dividing plate, 6, second partition, 7, operation hole, 8, upper cavity, 9, lower chamber, 10, top board, 11, bedding, 12, the water surface, 13, mud face, 14, scour protection, 15, basic stake holes.
Detailed description of the invention
As shown in Figure 1, 2, it is the schematic diagram of Bridge Pile bucket combination foundation structure, and staving 1 is made up of bucket outer wall 3, inner wall of barrel 4, first dividing plate 5, second partition 6, and between bucket outer wall 3 and inner wall of barrel 4, vertical circumferentially interval arranges basic stake holes 15.
Inner wall of barrel 4 is provided with the first dividing plate 5, bowl inner chamber is separated into upper cavity 8 and lower chamber 9 by the first dividing plate 5, second partition 6 is provided with in upper cavity 8, in the present embodiment, second partition 6 is in cross structure, and upper cavity 8 is evenly divided into four upper unit cavitys (as indicated with 2) separated separately by second partition 6.Second partition also can be other structures, upper cavity 8 is evenly divided into five, six upper unit cavitys separated separately.Second partition 6 center is provided with operation hole 7, the through second partition 6 in operation hole 7 and the first dividing plate 5, is communicated with lower chamber 9.
After foundation construction completes, mud jacking between the first dividing plate 5 and bedding 11.
Drilled pile 2 is constructed in basic stake holes 15.
Staving 1 end face has built top board 10.
The basic construction sequence of a kind of pile foundation bucket foundation of the present invention is as follows:
1, staving is prefabricated.In stake bucket combination foundation of the present invention, bucket body structure adopts dock prefabricated, and prefabricated staving possesses watertightness, meets the requirement of air supporting stability.
2, foundation trench excavation.The present invention is applicable to deep water waters under thick-covering condition, first removes the soft layers such as surperficial mud, carries out foundation trench excavation and bedding 11 processes according to design standard.As shown in Figure 3.
3, staving air supporting and towage.After the dock completing staving 1 is prefabricated, is inflated in lower chamber 9 by operation hole 7, make staving floating, and rely on towboat to consign to sinking waters.As shown in Figure 4.
5, staving location.Staving 1 positions after flotating to sinking waters, and positioning and guiding ship can be relied on to complete, and location is heaving pile also; Also location pylon can be relied under more shallow or conditions permit location is completed in the depth of water.As shown in Figure 5.
6, staving exhaust is sunk.After completing location, slowly got rid of the Compressed Gas in lower chamber 9 by operation hole 7, staving 1 is sunk.As shown in Figure 6.
7, the water filling of upper cavity unit is sunk.After Compressed Gas in emptying staving lower chamber 9, temporary enclosed operation hole 7, and to the even water filling of each upper cavity unit of upper cavity 8, by adjusting each upper cavity unit waterflood injection rate, monitor closely staving sinking form simultaneously, realizes that staving steadily sinks, rectifies a deviation, implantation.That can carry out staving 1 in the above process connects height.As shown in Figure 7.
8, lower chamber draws water sinking.When water filling in upper cavity unit cannot make staving continue to sink, by the water body in operation hole 7 pump drainage lower chamber 9, staving produces the vertical heavy penetration force be made up of atmospheric pressure and hydraulic pressure, makes staving continue to sink.Still need to increase heavy pass through power time, can sink to continuing ballast in upper cavity 8.Water absorption course, when staving sinks to producing deviation, by regulating the water level in each upper cavity unit of upper cavity 8, adjusting the heavy of staving all directions and passing through speed.More than heavy pass through in process can proceed staving 1 connect height.As shown in Figure 8.
9, Dispose by grouting in bucket.After staving reaches that design is heavy and passes through the degree of depth, by operation hole 7 to mud jacking in lower chamber 9, to strengthen core bearing capacity and the connection with the first dividing plate 5 in bucket.As shown in Figure 9.
10, drilled pile construction.In bucket after Dispose by grouting, shutoff operation hole 7, the water body in emptying upper cavity 8, and the construction of scour protection 14 is carried out in basic surrounding.Bore operation is carried out, until complete the construction of drilled pile 2 afterwards by basic stake holes 15.As shown in Figure 10.
11, dry preservative treatment is carried out to each upper cavity unit of upper cavity 8, can carry out filling out core in portion in the inner when needing.Finally build top board 10, complete foundation construction.As shown in figure 11.
Claims (5)
1. a Bridge Pile bucket combination foundation, be made up of staving and drilled pile, it is characterized in that on barrel body wall, vertical spacing is provided with stake holes, inner wall of barrel is provided with the first dividing plate, and barrel body wall inner chamber is separated into upper cavity and lower chamber by the first dividing plate, is provided with second partition in upper cavity, upper cavity is separated the upper unit cavity in separating separately by second partition, second partition center is provided with operation hole, runs through the first dividing plate, is communicated with lower chamber.
2., based on a construction method for Bridge Pile bucket combination foundation described in claim 1, the steps include:
(1) staving dock is prefabricated, prefabricated reinforced concrete staving in dock;
(2) remove basic soft layer, excavation foundation trench, and carry out foundation bed treatment;
(3) inflate in the lower chamber of staving, formed and stablize air float body, and towage is to sinking waters;
(4) staving location, heaving pile;
(5) get rid of the air in staving lower chamber, staving sinks;
(6) to water filling in upper cavity, staving continues heavy passing through;
(7) after mud face is sunk in staving bottom, lower chamber forms enclosure space, the water in pump drainage lower chamber, and bucket body structure continues heavy passing through;
(8) after staving sinks to putting in place, water filling completely in upper cavity, Dispose by grouting in lower chamber, carries out basic precompressed, and carries out basic protection against erosion process;
(9) bored pile construction is carried out by stake holes;
(10) emptying upper cavity ballast water, and carry out drying process;
(11) build top board, complete the construction of Bridge Pile bucket combination foundation.
3. the construction method of Bridge Pile bucket combination foundation as claimed in claim 2, it is characterized in that described in step 6 to water filling in upper cavity be: even water filling in the upper cavity unit separated separately, to regulate each unit waterflood injection rate to realize correction, makes staving steadily sink.
4. beam stake bucket combination foundation construction method as claimed in claim 2, what it is characterized in that carrying out while step 6 or step 7 central sill stake bucket combination foundation structure are sunk barrel wall and second partition connects height.
5. beam stake bucket combination foundation construction method as claimed in claim 2, it is characterized in that basic precompressed described in step 8 be by operation hole to mud jacking between lower chamber and bedding, strengthen core bearing capacity and the connection with the first dividing plate in lower chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210125399.7A CN103015455B (en) | 2012-04-25 | 2012-04-25 | Bridge pile-bucket combined foundation and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210125399.7A CN103015455B (en) | 2012-04-25 | 2012-04-25 | Bridge pile-bucket combined foundation and construction method thereof |
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| CN103015455A CN103015455A (en) | 2013-04-03 |
| CN103015455B true CN103015455B (en) | 2015-03-18 |
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| CN103225314A (en) * | 2013-05-11 | 2013-07-31 | 天津大学 | Offshore wind power foundation consisting of single pile and cylindrical foundations |
| CN103741705B (en) * | 2013-12-23 | 2015-08-12 | 中交第二航务工程局有限公司 | Two-layer barrel cover suction type bucket stake composite foundation and construction method |
| CN106801435A (en) * | 2017-03-17 | 2017-06-06 | 王燏斌 | A kind of deep water foundation and constructing device and its construction method |
| CN107059914A (en) * | 2017-06-19 | 2017-08-18 | 中铁第四勘察设计院集团有限公司 | A kind of ring-type for being used for shallow overburden or naked rock area in water is embedded to set basis |
| CN111636465B (en) * | 2020-05-29 | 2021-11-30 | 中铁大桥勘测设计院集团有限公司 | Integrated deepwater foundation and construction method thereof |
| CN114000495B (en) * | 2021-11-22 | 2023-01-13 | 中交第一航务工程局有限公司 | Underwater vacuum preloading process |
| CN115288135A (en) * | 2022-09-14 | 2022-11-04 | 浙江交工集团股份有限公司 | Hydraulic pile sinking structure and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2304688Y (en) * | 1997-09-03 | 1999-01-20 | 天津奈普顿近海工程开发有限公司 | Barrel type mono-column foundation structure with loading tank for supporting platform |
| CN1995557A (en) * | 2006-10-27 | 2007-07-11 | 上海海事大学 | Stake-barrel base |
| JP4409357B2 (en) * | 2004-05-20 | 2010-02-03 | 五洋建設株式会社 | Construction method for underwater foundation |
| CN202148536U (en) * | 2011-07-13 | 2012-02-22 | 浙江大学 | Self-floating barrel-shaped foundation of offshore wind power generator set |
| CN202194151U (en) * | 2011-04-11 | 2012-04-18 | 中交第三航务工程勘察设计院有限公司 | Reversely-buckled thin-walled barrel-shaped base structure |
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2012
- 2012-04-25 CN CN201210125399.7A patent/CN103015455B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2304688Y (en) * | 1997-09-03 | 1999-01-20 | 天津奈普顿近海工程开发有限公司 | Barrel type mono-column foundation structure with loading tank for supporting platform |
| JP4409357B2 (en) * | 2004-05-20 | 2010-02-03 | 五洋建設株式会社 | Construction method for underwater foundation |
| CN1995557A (en) * | 2006-10-27 | 2007-07-11 | 上海海事大学 | Stake-barrel base |
| CN202194151U (en) * | 2011-04-11 | 2012-04-18 | 中交第三航务工程勘察设计院有限公司 | Reversely-buckled thin-walled barrel-shaped base structure |
| CN202148536U (en) * | 2011-07-13 | 2012-02-22 | 浙江大学 | Self-floating barrel-shaped foundation of offshore wind power generator set |
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Inventor after: Zhang Yongtao Inventor after: Jin Shucheng Inventor after: Hu Dongyong Inventor after: Zhang Guozhi Inventor after: Yang Yanhua Inventor after: Wu Qihe Inventor after: Liu Jianbo Inventor before: Jin Shucheng Inventor before: Hu Dongyong Inventor before: Zhang Guozhi Inventor before: Zhang Yongtao Inventor before: Yang Yanhua Inventor before: Wu Qihe Inventor before: Liu Jianbo |
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