CN103410098B - The substep follow-up building method of steel pipe pile operation platform in offshore water - Google Patents
The substep follow-up building method of steel pipe pile operation platform in offshore water Download PDFInfo
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- CN103410098B CN103410098B CN201310363015.XA CN201310363015A CN103410098B CN 103410098 B CN103410098 B CN 103410098B CN 201310363015 A CN201310363015 A CN 201310363015A CN 103410098 B CN103410098 B CN 103410098B
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Abstract
The invention discloses the substep follow-up building method of steel pipe pile operation platform in a kind of offshore water, first draw bed configuration figure, and determine to build the installation site of steel pipe pile quantity needed for steel pipe pile operation platform and every root steel pipe pile according to bed configuration figure; Then build or the steel pipe pile operation platform of bank one campshed base on the bank, and carry out this row's pile foundation construction; Then extend in water, build the steel pipe pile operation platform of another campshed base, carry out another row's pile foundation construction; Circulation like this, until the steel pipe pile operation platform completing whole pile foundations of a bridge pier is built and whole pile foundation construction.The technical barrier that the steel pipe pile operation platform that the inventive method can solve pile foundation of bridge pier in the water under offshore, abrupt slope, hard naked rock geology orographic condition is effectively built, steel pipe pile operation platform is built when not carrying out water borehole blasting, and pile foundation quality and construction safety can be guaranteed, avoid underwater demolition on the impact of environment, shorten construction period.
Description
Technical field
The present invention relates to technical field of bridge construction, particularly in a kind of offshore water steel pipe pile operation platform substep follow-up building method.
Background technology
In the construction of the bridge construction such as highway in China, railway, cast-in-place pile group base is widely used.Pile Installation Platform is that in water, bridge pier Bored Pile Foundation is constructed the prerequisite guarantee carried out, and Pile Installation Platform provides the over-water construction place of constructor and construction equipment operation, facility placing of material.In current water, the form of structure of bridge pier Pile Installation Platform mainly contains floating operation platform, steel pipe pile operation platform, steel pile casting operation platform, steel cofferdam operation platform four kinds.
When bridge pier is positioned at offshore, abrupt slope, hard naked rock geology orographic condition, main employing steel pipe pile operation platform.Steel pipe pile operation platform, primarily of steel pipe pile peace deck plate composition, is connected firmly by connecting system between steel pipe pile.In current bridge construction, build the first working procedure that Pile Installation Platform is pile foundation construction, be all first put up Pile Installation Platform after carry out pile foundation construction again.Due under offshore, abrupt slope, hard naked rock geology orographic condition, steel pipe pile and steel pile casting can not be squeezed into riverbed and reach homeostasis, therefore, when building Pile Installation Platform, usually first by after scar explosion leveling in the river bed water of pile foundation scope, install more than steel pipe pile and the water surface thereof by root again and connect system and section steel platform panel, finally form the Pile Installation Platform of whole bridge pier, Pile Installation Platform carries out the constructions such as pile foundation boring after having built again.When Bridge Pier Construction waters does not allow underwater demolition (such as cage-culturing water), how to build Bored Pile Foundation operation platform at offshore, abrupt slope, hard naked rock geology orographic condition, become a problem demanding prompt solution.
Summary of the invention
To the object of the invention is to overcome in existing Pile Installation Platform holistic conformation method and existing just can carry out by underwater demolition the deficiency that mode that Pile Installation Platform builds cannot be applied to the environment not allowing underwater demolition, there is provided the substep follow-up building method of steel pipe pile operation platform in a kind of offshore water, the method can be applicable to not allow the environment of underwater demolition to carry out building of steel pipe pile operation platform.
In order to realize foregoing invention object, the invention provides following technical scheme:
A substep follow-up building method for steel pipe pile operation platform in offshore water, comprises the following steps:
(1) measure the bed configuration data of pile foundation of bridge pier scope, draw out bed configuration figure, and according to bed configuration figure, determine to build the installation site of steel pipe pile quantity needed for steel pipe pile operation platform and every root steel pipe pile;
(2) first build the steel pipe pile operation platform of offshore first row pile foundation, then carry out this row's pile foundation construction;
(3) after completing first row pile foundation construction, Xiang Shuizhong extends, and builds the steel pipe pile operation platform of another campshed base, carries out another row's pile foundation construction;
(4) circulation performs above-mentioned steps (three), until the steel pipe pile operation platform completing whole pile foundations of a bridge pier is built and whole pile foundation construction.
Further, in said method, in described step (two), when building the steel pipe pile operation platform of offshore first row pile foundation, if the scar within the scope of first row pile foundation has certain thickness stable covering layer, then adopt vibrating hammer that steel pipe pile is squeezed into covering layer; If the scar within the scope of first row pile foundation is intectate naked rock, exposed ways is then by slight dynamite digging mode, the inclined uncovered rock riverbed of the steel pipe pile position of the steel pipe pile operation platform of pile foundation is flattened, and at steel pipe pile position manually digging hole, after inserting steel pipe pile, concrete perfusion is by steel pipe pile anchoring, shallow water part then to be sling vibrating hammer with crane barge, by shallow for steel pipe pile insertion riverbed till not sliding.
Further, in said method, in described step (two), carry out, in the pile foundation construction of first row pile foundation, first steel pile casting being installed, steel pile casting lower end is cut into the high-low cutting curb with riverbed scar adaptation, and to sling vibration with crane barge, avoid sliding in shallow for steel pile casting insertion riverbed by hammer, the flat upper surface template steel that steel pile casting upper end arranges locating rack and steel pipe pile operation platform is connected and fixed, and adopts bridging the steel pile casting between the water surface and flat upper surface template steel and steel pipe pile to be connected firmly; Then first row pile foundation construction is carried out with on handling rig to steel pipe pile operation platform.
Further, in said method, in described step (three), when building the steel pipe pile operation platform of another campshed base, the inserted to play of another row's steel pipe pile is carried out under the prerequisite that last campshed base concrete has been poured into a mould or part is built, using the pile foundation of fluid concrete and steel pile casting thereof as the solid and reliable built-in fitting inserted in water, under the prerequisite of the not loose hook of crane barge, steel pipe pile good for inserted to play is connected to rapidly in the pile foundation of fluid concrete.
Compared with prior art, beneficial effect of the present invention: in offshore water of the present invention, steel pipe pile operation platform substep follows up building method, when constructing the steel pipe pile operation platform of first row pile foundation, the negligible amounts of institute's inserted to play steel pile casting and steel pipe pile, and can be connected with firm ground, riverbank, stability is much larger than existing operation platform holistic conformation method.After first row pile foundation has been built, the steel pipe pile operation platform of follow-up pile foundation is to pour into a mould pile foundation for root, continue to set up, ensure that the stability of steel pipe pile operation platform, the technical barrier that the steel pipe pile operation platform that effectively can solve pile foundation of bridge pier in the water under offshore, abrupt slope, hard naked rock geology orographic condition is built, build steel pipe pile operation platform when not carrying out water borehole blasting, and pile foundation quality and construction safety can be guaranteed, avoid underwater demolition on the impact of environment.In addition, steel pipe pile operation platform substep of the present invention follow-up builds construction method compared with holistic conformation construction method, the impact of rig cycle-index is little, follow-up drilling machine platform can be carried out the construction gap of last campshed base (last campshed base has part pile) to build simultaneously, and transfer without the need to carrying out, consolidate the envelope pin measures such as pin steel cofferdam, save further and a large amount of perform the time, shorten construction period, make unit in charge of construction obtain good benefit.
Accompanying drawing illustrates:
Fig. 1 is the flow chart of the substep follow-up building method of steel pipe pile operation platform in offshore water of the present invention.
Fig. 2 is that schematic diagram built by the steel pipe pile operation platform of first row pile foundation in embodiment.
Fig. 3 is the plan view of the steel pipe pile operation platform (without flat upper surface template steel) of first row pile foundation in embodiment.
Fig. 4 is that schematic diagram built by the steel pipe pile operation platform of second row pile foundation in embodiment.
Fig. 5 is the plan view of the steel pipe pile operation platform (without flat upper surface template steel) of second row pile foundation in embodiment.
Fig. 6 is that schematic diagram built by the steel pipe pile operation platform of the 3rd campshed base in embodiment.
Fig. 7 is the plan view of the steel pipe pile operation platform (without flat upper surface template steel) of the 3rd campshed base in embodiment.
Mark in figure: 101-guardrail, 102-flat upper surface template steel, 103-flat top beam, 104-connects system, 105-steel pipe pile, 106-steel pile casting, 107-pile foundation.
Detailed description of the invention
Below in conjunction with test example and detailed description of the invention, the present invention is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the present invention is only limitted to following embodiment, all technology realized based on content of the present invention all belong to scope of the present invention.
The substep follow-up building method of steel pipe pile operation platform in the offshore water that the present invention proposes, adopt the mode of substep follow-up, steel pipe pile operation platform is built to combine with pile foundation construction and carry out simultaneously, first build or the steel pipe pile operation platform of bank one campshed base on the bank, then complete this row's pile foundation construction; Then extend in water, build the steel pipe pile operation platform of another campshed base, complete another row's pile foundation construction; Circulation like this, until the steel pipe pile operation platform completing whole pile foundations of a bridge pier is built and whole pile foundation construction.
Referring to Fig. 1 to Fig. 7, comparatively detailed elaboration is carried out to the inventive method.
With reference to figure 1, the inventive method comprises the following steps:
(1) accurately measure the bed configuration data and under water of pile foundation of bridge pier scope on the bank, draw out detailed bed configuration figure.
(2) in conjunction with bed configuration figure, complete the design of steel pipe pile operation platform, comprise the usage quantity of steel pipe pile and the installation site of every root steel pipe pile.
(3) install the steel pipe pile 105 of the steel pipe pile operation platform of first row pile foundation and to connect be 104, flat upper surface template steel 102, the steel pipe pile operation platform carrying out first row pile foundation is built (as shown in Figure 2 and Figure 3).If the scar within the scope of first row pile foundation has the stable covering layer of suitable thickness, then adopt vibrating hammer that steel pipe pile 105 is squeezed into covering layer.If the scar within the scope of first row pile foundation is intectate naked rock, exposed ways is then by slight dynamite digging mode, the inclined uncovered rock riverbed of the steel pipe pile position of the steel pipe pile operation platform of pile foundation is flattened, and at steel pipe pile position manually digging hole, after inserting steel pipe pile, concrete perfusion is by steel pipe pile anchoring; Shallow water part then to be sling vibrating hammer with crane barge, by shallow for steel pipe pile 105 insertion riverbed till not sliding.Be 104 connections by connection between steel pipe pile 105, be connected by flat top beam 103 between steel pipe pile 105 with flat upper surface template steel 102.
(4) steel pile casting of first row pile foundation is installed.Steel pile casting 106 lower end cuts into the high-low cutting curb with riverbed scar adaptation, and shallow for steel pile casting 106 insertion riverbed avoided slide with crane barge vibrating hammer of slinging, the flat upper surface template steel 102 that steel pile casting 106 upper end arranges locating rack and steel pipe pile operation platform is connected and fixed, and adopts bridging to be connected firmly with steel pipe pile 105 by the steel pile casting 106 between the water surface and flat upper surface template steel.After the steel pile casting installation of first row pile foundation, flat upper surface template steel 102 arranges guardrail 101.
(5) handling rig to steel pipe pile operation platform carries out first row pile foundation construction.Pile foundation construction is mature technology, does not repeat herein.
(6) after first row pile foundation construction completes, Xiang Shuizhong extends, and install the steel pipe pile of the steel pipe pile operation platform of second row pile foundation and connect system, flat upper surface template steel, the steel pipe pile operation platform carrying out second row pile foundation is built, as shown in Figure 4, Figure 5,107 in figure is completed pile foundation.Building of second row steel pipe pile operation platform is use crane barge to sling vibrating hammer, by shallow for steel pipe pile insertion riverbed till not sliding equally.Under normal circumstances, the riverbed line of second row pile foundation part comparatively relaxes compared to first row pile foundation, steel pipe pile is more easily stablized, and the inserted to play of second row steel pipe pile is carried out under the prerequisite that first row pile foundation concrete has been poured into a mould or part is built, can using the pile foundation of fluid concrete and steel pile casting thereof as the solid and reliable built-in fitting of the extreme inserted in water, under the prerequisite of the not loose hook of crane barge, steel pipe pile good for inserted to play is connected to rapidly and has poured into a mould in pile foundation, ensured the reliable and stable of steel pipe pile.
(7) steel pile casting of second row pile foundation is installed, and completes second row pile foundation construction.
(8), after second row pile foundation construction completes, Xiang Shuizhong extends, and the steel pipe pile operation platform carrying out the 3rd campshed base is built (as shown in Figure 6, Figure 7).Circulation like this, until the steel pipe pile operation platform completing all pile foundations of a bridge pier is built, and completes all pile foundation constructions.
Steel pipe pile and steel pile casting in work progress, need that the carrying out of one one is transferred, spreading, solid pin, with the operation such as surrounding member is connected.When traditional Pile Installation Platform holistic conformation method is constructed, when not carrying out explosion and making riverbed smooth, the single steel pipe pile of inserted to play and steel pile casting can not reach stable state substantially, if now carry out the inserted to play of second, the 3rd steel pipe pile and steel pile casting again, probably the accidents such as unstability can be there is in the process of inserted to play; Even without occurring single pile unstability, when Pile Installation Platform holistic conformation, there is unstable possibility of getting a foothold in many steel pipe piles or steel pile casting simultaneously, follow up compared with building method with the present invention's substep, considerably increase the probability of a pile base unstability and then drive operation platform overall collapse in drilling process.In steel pipe pile operation platform substep follow-up building method of the present invention, when constructing the steel pipe pile operation platform of first row pile foundation, the negligible amounts of institute's inserted to play steel pile casting and steel pipe pile, and can be connected with firm ground, riverbank, stability is much larger than existing operation platform holistic conformation method.After first row pile foundation has been built, the steel pipe pile operation platform of follow-up pile foundation, to pour into a mould pile foundation for root, continues to set up, ensure that the stability of steel pipe pile operation platform.
In addition, the follow-up of the present invention's substep is built in construction method, the negligible amounts of pile foundation when the operation platform that substep carries out is built, general only needs 2 to 3 bench drill machines, compared with traditional holistic conformation construction method, the impact of rig cycle-index is less, subsequent construction platform building can be carried out the construction gap of last campshed base (last campshed base has part pile) simultaneously, and without the need to carrying out the envelope pin measure of transferring, consolidating pin steel cofferdam etc., save further and a large amount of perform the time, shorten construction period.
All features disclosed in this manual, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Arbitrary feature disclosed in this manual (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
Claims (3)
1. in offshore water steel pipe pile operation platform substep follow-up a building method, it is characterized in that, comprise the following steps:
(1) measure the bed configuration data of pile foundation of bridge pier scope, draw out bed configuration figure, and according to bed configuration figure, determine to build the installation site of steel pipe pile quantity needed for steel pipe pile operation platform and every root steel pipe pile;
(2) first build the steel pipe pile operation platform of offshore first row pile foundation, then carry out this row's pile foundation construction;
(3) after completing first row pile foundation construction, Xiang Shuizhong extends, and builds the steel pipe pile operation platform of another campshed base, carries out another row's pile foundation construction;
(4) circulation performs above-mentioned steps (three), until the steel pipe pile operation platform completing whole pile foundations of a bridge pier is built and whole pile foundation construction;
In described step (two), when building the steel pipe pile operation platform of offshore first row pile foundation, if the scar within the scope of first row pile foundation has certain thickness stable covering layer, then adopt vibrating hammer that steel pipe pile is squeezed into covering layer; If the scar within the scope of first row pile foundation is intectate naked rock, exposed ways is then by slight dynamite digging mode, the inclined uncovered rock riverbed of the steel pipe pile position of the steel pipe pile operation platform of pile foundation is flattened, and at steel pipe pile position manually digging hole, after inserting steel pipe pile, concrete perfusion is by steel pipe pile anchoring, shallow water part then to be sling vibrating hammer with crane barge, by shallow for steel pipe pile insertion riverbed till not sliding.
2. in offshore water according to claim 1 steel pipe pile operation platform substep follow-up building method, it is characterized in that, in described step (two), carry out in the pile foundation construction of first row pile foundation, first steel pile casting is installed, steel pile casting lower end is cut into the high-low cutting curb with riverbed scar adaptation, and shallow for steel pile casting insertion riverbed avoided slide with crane barge vibrating hammer of slinging, the flat upper surface template steel that steel pile casting upper end arranges locating rack and steel pipe pile operation platform is connected and fixed, and adopts bridging the steel pile casting between the water surface and flat upper surface template steel and steel pipe pile to be connected firmly; Then first row pile foundation construction is carried out with on handling rig to steel pipe pile operation platform.
3. in offshore water according to claim 1 steel pipe pile operation platform substep follow-up building method, it is characterized in that, in described step (three), when building the steel pipe pile operation platform of another campshed base, the inserted to play of another row's steel pipe pile is carried out under the prerequisite that last campshed base concrete has been poured into a mould or part is built, using the pile foundation of fluid concrete and steel pile casting thereof as the solid and reliable built-in fitting inserted in water, under the prerequisite of the not loose hook of crane barge, steel pipe pile good for inserted to play is connected to rapidly in the pile foundation of fluid concrete.
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| CN108049398A (en) * | 2017-12-05 | 2018-05-18 | 中交第四公路工程局有限公司 | Bridge location is in the pile base construction method in mud area |
| CN115821768B (en) * | 2022-11-26 | 2024-06-18 | 中铁广州工程局集团有限公司 | Construction method of concrete main beam steel pipe bracket of tie-bar arch bridge in shallow water area |
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Effective date of registration: 20160111 Address after: Jinniu District Kam Tong Road Chengdu city Sichuan province 610031 No. 16 Patentee after: CHINA RAILWAY NO.2 BUREAU ENGINEERING CO., LTD. Address before: 610041, No. nine, No. 156, building B, high building, Xing Xing Road, Chengdu hi tech Zone, Sichuan Patentee before: China Railway Erju Co., Ltd. Patentee before: China Railway Erju 5th Engineering Co., Ltd. |
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Address after: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Co-patentee after: China Railway Erju 5th Engineering Co., Ltd. Patentee after: China Railway No. 2 Engineering Group Co., Ltd. Address before: No. 16, Jinniu District Road, Jinniu District Road, Chengdu, Sichuan Co-patentee before: China Railway Erju 5th Engineering Co., Ltd. Patentee before: CHINA RAILWAY NO.2 BUREAU ENGINEERING CO., LTD. |