CN105386408A - Deep-water bridge pile foundation construction method - Google Patents

Deep-water bridge pile foundation construction method Download PDF

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Publication number
CN105386408A
CN105386408A CN201510733473.7A CN201510733473A CN105386408A CN 105386408 A CN105386408 A CN 105386408A CN 201510733473 A CN201510733473 A CN 201510733473A CN 105386408 A CN105386408 A CN 105386408A
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China
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steel
pile casting
construction
leading truck
steel pile
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CN201510733473.7A
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CN105386408B (en
Inventor
何超然
唐衡
徐洲
姚清涛
邓安华
潘文铭
柯杰
罗甜
夏欢
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CCCC HIGHWAY BRIDGES NATIONAL ENGINEERING RESEARCH CENTER Co.,Ltd.
CCCC WUHAN CHI HENG INTERNATIONAL ENGINEERING CONSULTING Co.,Ltd.
CCCC Second Harbor Engineering Co
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Zhongjiao Wuhan Zhixing International Engineering Consulting Co Ltd
CCCC Second Harbor Engineering Co
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Publication of CN105386408A publication Critical patent/CN105386408A/en
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Abstract

The invention provides a deep-water bridge pile foundation construction method. A self-lifting platform is used as an initial auxiliary platform, and the end part of the self-lifting platform is welded and fixedly connected with a guide frame; a segmented cantilever of the guide frame is lengthened; the sinking, the positioning and the rock-socketed anchoring are performed for steel protective cylinders in sequence; and the cantilever type guide frame is fixedly connected with each steel protective cylinder to form an operation platform for formal hole and pile forming construction. The construction method is strong in adaptability under bad environment condition; the guide frame is segmented and prefabricated, is welded and fixedly connected by segments, and is lengthened through the flange connection to form a dual-layer guide adjustment system, so that the rigidity is high, the sinking precision of the steel protective cylinders is high, and the construction is convenient and safe; the guide frame has dual functions; in the early stage, the guide frame serves as a steel protective cylinder sinking guide system; and in the later stage, the guide frame serves as a construction platform surface layer bearing structure; and the deep-water bridge pile foundation construction method has the advantages of short construction period, low time and material consumption and high operation efficiency.

Description

Deep-water bridge pile base construction method
Technical field
The present invention relates to technical field of bridge construction, more particularly, the present invention relates to deep-water bridge pile base construction method.
Background technology
Along with the fast development of economy, the demand of communications and transportation increases rapidly, and large-scale over strait, river-spanning bridge get more and more, and high, the stay-in-grade bored pile of supporting capacity is the first-selected base form of exhausted most bridge engineering.The construction of bored pile foundation is the basic link of whole bridge construction operation, is also the most important link.
Naked rock or shallow overburden waters Bridge Pile Foundation Construction platform generally adopt fixed platform and floating platform.Fixed platform is divided into builds island platform, steel pile casting+initial auxiliary steel pipe pile platform, steel cofferdam platform etc.; Floating platform is divided into pontoon, buoyancy tank platform and floating steel suspended box cofferdam platform etc.But under the mal-conditions such as deep water, large flow velocity, macrotidal range, high wind wave, all there is certain defect in above flat form.
For building island platform, (sand and stone etc.) engineering quantity of banketing is comparatively large, and long in time limit, cost is high; For steel pile casting+initial auxiliary steel pipe pile platform, engineering ship is not easily in place, steel pile casting and steel pipe pile all need embedding rock anchoring, sinking is of poor quality, auxiliary steel pipe pile platform self-stability requires high, and erection construction technical difficulty is large, and steel pile casting needs to adopt special leading truck, and iterative method, displacement just can complete sinking successively, operation conversion is numerous and diverse, long construction period; For steel cofferdam platform, floating steel suspended box cofferdam platform, pontoon and buoyancy tank platform etc., anchor system arranges that engineering quantity is large, and location technology difficulty is large, and it is large to take waters, and the cycle is long, affects navigation channel ship and passes through.
Summary of the invention
An object of the present invention is to solve at least the problems referred to above and defect, and the advantage will illustrated after providing.
A further object of the invention is to provide a kind of deep-water bridge pile base construction method, solve the shortcoming in above-mentioned background technology, utilize jack-up unit as assistance platform, be cemented on jack-up unit in leading truck one end, other end merogenesis cantilevered forward spreading, and carry out steel pile casting sinking, anchoring successively, can as the formal job platform of follow-up pile foundation construction after leading truck and steel pile casting consolidation.It is the construction of bridge pile foundation under naked rock or shallow overburden condition that construction method of the present invention is particularly useful for the extreme natural environments such as deep water, macrotidal range, high sea (river) bed of plunging into the commercial sea.
In order to realize, according to these objects of the present invention and other advantages, providing a kind of deep-water bridge pile base construction method, comprise the following steps:
S1, location jack-up unit, be fixed on described jack-up unit front end by the leading truck group of first sections, and described leading truck group is provided with the sinking hole that at least two are placed steel pile casting;
S2, steel pile casting sinking is being needed the sinking hole of leading pile, carry out embedding rock anchoring and bore forming, put steel pile casting subsequently to other sinking inner hole depositions and carry out embedding rock anchoring construction, with the leading truck group of first sections for load-carrying members, set up first segmental construction platform, remove described jack-up unit afterwards;
S3, the lifting of the leading truck group of the second sections is carried out spreading to the leading truck group front end of first sections, one by one sinking steel pile casting carry out embedding rock anchoring construction, with the leading truck group of the second sections for load-carrying members, set up the second sections operation platform; And
S4, repetition step S3, until all segmental construction platform buildings are complete, carry out bore forming to the steel pile casting of non-bore forming;
Wherein, the leading truck group of any sections is that several leading trucks perpendicular to described jack-up unit front end are formed, and shown leading truck is the trussed construction of upper, middle and lower compound steel pipe composition.
Preferably, in step S1, the location of jack-up unit comprises the following steps:
S11, employing gps system guide jack-up unit to complete just location, adopt at least two total powerstations to check the location of jack-up units;
S12, controlled the transferring of hydraulic column of jack-up unit by described total powerstation.
Preferably, the steel pile casting of sinking described in step S2 comprises the following steps:
S21, measure the center of stake position by GPS navigation system, thus location rig, after being removed by design checking later stage jack-up unit, operation platform from steady condition, determine the sinking hole needing leading pile, adopt the scar of the little stroke of rig to pile position to impact, until flat for the punching of the scar of pile position, then scar is washed into the dark pitting of 0.5m;
Corresponding sinking hole on S22, hoisting steel casing to leading truck, by in steel pile casting vertical subsidence to described pitting, steel pile casting checks off normal and the gradient of steel pile casting after arriving scar, after meeting the demands with shaped steel by steel pile casting top temporary consolidation on leading truck, if do not meet the demands, hoisting steel casing adjusts again.
Preferably, described in step S2, embedding rock anchoring and bore forming comprise the following steps:
S23, in the steel pile casting of pile position, carry out punching operation, described steel pile casting follows up along with hole depth, until described steel pile casting reaches design socket length, build steel pile casting bottom concrete, make the gap between steel pile casting and basement rock described in concrete and filled with mortar;
S24, in described steel pile casting, little stroke repeated stock pulping is adopted to spud in, timely clear hole behind whole hole, sediment at the bottom of perform hole of going forward side by side detects and pore-forming Data Detection, detect by rear, transfer precast reinforced cage successively and fill with concrete conduit, and again carry out sediment detection, detect by rear cast underwater concrete, complete bore forming;
S25, according to the method for step S23, embedding rock anchoring is carried out to the steel pile casting of non-pile position.
Preferably, also comprise between adjacent steel pile casting and being connected, be specially: adjacent steel pile casting is connected with diagonal brace by lateral in step S2, lateral adopts Harvard's weld, and welding quality controls by three grades of weld seam standard tests.
Preferably, the construction of spreading described in step S3 comprises the following steps:
S31, save between the steel pile casting in leading truck group at head, shaped steel is welded as the lower transverse beam of the middle level steel pipe of leading truck, and weld middle level steel pipe and the lower transverse beam of U-shaped Interal fixation leading truck, at the outside Weld-supporting bracket of the steel pile casting of first sections leading truck group end;
S32, adopt crawler crane lifting to the front end of first sections leading truck the second sections leading truck group, carry out spreading by Flange joint.
The present invention at least comprises following beneficial effect:
1, carry out deep-water bridge pile foundation construction based on jack-up unit, construction environment applicability is good, especially under the extreme natural environments such as deep water, macrotidal range, high sea, has good applicability;
2, leading truck has dual-use function, and early stage, the later stage was as operation platform surface layer load-carrying members as steel pile casting guidance system;
3, cantilevered leading truck adopts merogenesis to make, and on-the-spot Flange joint extends, and often joint leading truck carries out welding consolidation with the steel pile casting of anchoring, and structural stability is higher, the risk of likely toppling under avoiding great cantilever situation, constructs more safe and reliable;
4, leading truck sinking hole height is large, and rigidity is large, and arranges upper and lower two-layer pushing tow adjusting device, and adjustable range is large, and guidance capability is good, and steel pile casting sinking quality is good in the presence of a harsh environment, and precision is high;
5, combine auxiliary steel pipe pile platform construction method compared to steel pile casting, can save construction material in a large number, the construction period shortens.
Part is embodied by explanation below by other advantage of the present invention, target and feature, part also will by research and practice of the present invention by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of steel pile casting stake position in the present invention;
Fig. 2 is the schematic diagram of steel pile casting depositing step in the present invention;
Fig. 3 is the schematic diagram of the embedding rock anchors step of steel pile casting in the present invention;
Fig. 4 is the schematic diagram of rock-socketed pile pile step in the present invention;
Fig. 5 is the schematic diagram of steel pile casting lateral step in the present invention;
Fig. 6 is the schematic diagram of erection construction platform step in the present invention;
Fig. 7 is the schematic diagram to residue pile foundation construction step in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, can implement according to this with reference to manual word to make those skilled in the art.
Should be appreciated that used hereinly such as " to have ", other element one or more do not allotted in " comprising " and " comprising " term or the existence of its combination or interpolation.
A kind of deep-water bridge pile base construction method, comprises the following steps:
S1, location jack-up unit, be fixed on described jack-up unit front end by the leading truck group of first sections, and described leading truck group is provided with the sinking hole that at least two are placed steel pile casting; Jack-up unit is applicable to deep water sea area pile foundation construction.Assistance platform (or trestle) construction of prior art of comparing, saves construction material, shortens the time of setting up assistance platform; Compare pile driving barge, at exposed waters, platform stabilization is better, and steel pile casting location construction precision is high; Leading truck Stability Analysis of Structures, and Bailey beam platform of comparing, save material, the reduction of erection time.
S2, steel pile casting sinking is being needed the sinking hole of leading pile, carry out embedding rock anchoring and bore forming, put steel pile casting subsequently to other sinking inner hole depositions and carry out embedding rock anchoring construction, with the leading truck group of first sections for load-carrying members, set up first segmental construction platform, remove described jack-up unit afterwards; Jack-up unit is carrying out after the first sections platform construction completes, can entering the construction of next pier position, improve the utilization rate of machinery, contribute to shortening construction period;
S3, the lifting of the leading truck group of the second sections is carried out spreading to the leading truck group front end of first sections, one by one sinking steel pile casting carry out embedding rock anchoring construction, with the leading truck group of the second sections for load-carrying members, set up the second sections operation platform; Adopt Flange joint spreading in the present invention, compared to cantilever monolithic leading truck, the structural stability that Flange joint extends is better, not easily topples.And Flange joint construction safer reliable and stable and
S4, repetition step S3, until all segmental construction platform buildings are complete, carry out bore forming to the steel pile casting of non-bore forming;
Wherein, the leading truck group of any sections is that several leading trucks perpendicular to described jack-up unit front end are formed, and shown leading truck is the trussed construction of upper, middle and lower compound steel pipe composition.
In step S1, the location of jack-up unit comprises the following steps:
S11, employing gps system guide jack-up unit to complete just location, adopt at least two total powerstations to check the location of jack-up units;
S12, controlled the transferring of hydraulic column of jack-up unit by described total powerstation.
The steel pile casting of sinking described in step S2 comprises the following steps:
S21, measure the center of stake position by GPS navigation system, thus location rig, after being removed by design checking later stage jack-up unit, operation platform from steady condition, determine the sinking hole needing leading pile, adopt the scar of the little stroke of rig to pile position to impact, until flat for the punching of the scar of pile position, then scar is washed into the dark pitting of 0.5m; Checking computations content is stability against overturning and the stability against slope of structure.Comprise, the checking from steady condition under steady condition and Construction State of the first sections platform, the stable condition checking computations after platform and integrally completes.Determine that reaching stable condition needs several positions to complete filling concrete bore forming;
Corresponding sinking hole on S22, hoisting steel casing to leading truck, by in steel pile casting vertical subsidence to described pitting, steel pile casting checks off normal and the gradient of steel pile casting after arriving scar, after meeting the demands with shaped steel by steel pile casting top temporary consolidation on leading truck, if do not meet the demands, hoisting steel casing adjusts again.
Described in step S2, embedding rock anchoring and bore forming comprise the following steps:
S23, in the steel pile casting of pile position, carry out punching operation, described steel pile casting follows up along with hole depth, until described steel pile casting reaches design socket length, build steel pile casting bottom concrete, make the gap between steel pile casting and basement rock described in concrete and filled with mortar;
S24, in described steel pile casting, little stroke repeated stock pulping is adopted to spud in, timely clear hole behind whole hole, sediment at the bottom of perform hole of going forward side by side detects and pore-forming Data Detection, detect by rear, transfer precast reinforced cage successively and fill with concrete conduit, and again carry out sediment detection, detect by rear cast underwater concrete, complete bore forming;
S25, according to the method for step S23, embedding rock anchoring is carried out to the steel pile casting of non-pile position.Adopt vibratory drilling method that steel pile casting is directly squeezed into exposed bedrock layer compared to pile driving barge, the embedding rock anchoring of pre-punched hole can ensure that steel pile casting lower end can not deform, and ensure that pile quality.
Also comprise in step S2 between adjacent steel pile casting and being connected, be specially: adjacent steel pile casting is connected with diagonal brace by lateral, lateral adopts Harvard's weld, and welding quality controls by three grades of weld seam standard tests.
The construction of spreading described in step S3 comprises the following steps:
S31, save between the steel pile casting in leading truck group at head, shaped steel is welded as the lower transverse beam of the middle level steel pipe of leading truck, and weld middle level steel pipe and the lower transverse beam of U-shaped Interal fixation leading truck, at the outside Weld-supporting bracket of the steel pile casting of first sections leading truck group end;
S32, adopt crawler crane lifting to the front end of first sections leading truck the second sections leading truck group, carry out spreading by Flange joint.
Embodiment 1
As shown in figs. 1-7, a kind of deep-water bridge pile base construction method comprises the following steps:
One, jack-up unit location
First location.Adopt gps system to guide accommodation to complete just location from weather moor, survey crew adopts 2 total powerstations to adopt forward intersection to check in bank side.
Accurate location is carried out in two steps.Transfer first hydraulic column, adopt the trimming of 2 total powerstation forward intersection hydraulic control pillar outer contours, through check errorless after transfer immediately; Transfer other three hydraulic props successively.
Platform promotes.For convenience of the bore operation in steel pile casting, jack-up unit is promoted, jack-up unit distance from bottom water surface elevation >=maximum wave height should be ensured.
Two, leading truck location
Leading truck 1 is steel pipe truss structures, and welding is cemented in jack-up unit 2, is welded to each other consolidation between leading truck 1.Leading truck 1 arranges upper, middle and lower three layers of truss, is provided with for steel pile casting location, executes in heavy process the device of rectifying a deviation, adjusting and locking, have enough intensity, rigidity, can meet the design instructions for use of sinking steel pile casting in leading truck 1.
Three, pile foundation steel pipe pile pile and the embedding rock anchoring construction of steel pile casting
(1) advance borehole
Rig measures Zhuan Wei center in jack-up unit 2 by GPS navigation system, accurately locates rig.By steel pile casting platform construction period in design checking later stage from steady condition, determine the pile quantity of steel pipe pile, pile quantity is 2, and pile position is 1# and 3# stake position.Adopt the little stroke of rig to carry out repeated stock to 1#, 3# stake position, until flat for scar punching in stake position, then scar is washed into the pitting of about the 0.5m degree of depth.
(2) steel pile casting sinking
Lift by crane 1#, 3# stake steel pile casting respectively, to be lifted on leading truck 1 after corresponding hole site, after monitoring casing verticality meets the demands, by steel pile casting 3 slowly vertical subsidence in pigeon hole, steel pile casting 3 checks steel pile casting 3 off normal and gradient after arriving scar, after meeting the demands with shaped steel by steel pile casting 3 top temporary consolidation on leading truck 1, if do not meet the demands, hoisting steel casing 3 adjusts again.
(3) embedding rock anchoring
Rig is again in place, in 1#, 3# steel pile casting 3, carry out punching operation, steel pile casting 3 follows up, until 1#, 3# stake steel pile casting 3 reaches design socket length along with hole depth, build steel pile casting 3 bottom concrete, make concrete and mortar can fill gap between steel pile casting 3 and basement rock.Check casing periphery and scar encapsulation situations, if any larger gap, adopt sacked concrete shutoff under water.
(4) 1#, 3# rock-socketed pile bore forming
After rig is accurately located, in 1#, 3# steel pile casting 3, little stroke repeated stock pulping is adopted to spud in (Fig. 4).Behind whole hole, carry out hole clearly in time, sediment at the bottom of perform hole of going forward side by side detects and pore-forming Data Detection.Stake holes detects by rear, transfer precast reinforced cage 5 successively and fill with concrete conduit, and sediment detects again, if when sediment thickness does not meet design requirement, carries out secondary pile hole cleaning.Clear hole terminates to remove suction mud elbow, starts to pour into a mould underwater concrete, completes rock-socketed pile bore forming.
(5) the embedding rock anchoring construction of 2#, 4#, 5#, 6# pile foundation steel pile casting 3
The embedding rock anchoring construction method identical with 1#, 3# stake steel pile casting 3 is adopted to carry out the anchoring construction of 2#, 4#, 5#, 6# stake steel pile casting 3.
Four, steel pile casting 3 lateral construction
After the anchoring of every root steel pile casting 3 completes, be connected by lateral and diagonal brace with adjacent steel pile casting 3 of having constructed immediately.Steel pipe lateral adopts Harvard's weld, requires that welding quality controls by three grades of weld seam standard tests, meets design requirement simultaneously.
Five, leading truck 1 consolidation, spreading
(1) leading truck 1 consolidation
Between 1# ~ 6# pile foundation steel pile casting 3, adopt shaped steel welding drilling platform supporting lower transverse beam, and outside 1#, 3#, 4#, 6# pile foundation steel pile casting 3, adopt shaped steel welding drilling platform support bracket, pass through several piece U-shaped Plate Welding consolidation by between leading truck 1 lower floor's steel pipe and shaped steel.
(2) leading truck 1 spreading
Adopted by prefabricated positioning guiding rack 1 sections crawler crane lifting to positioning guiding rack 1 front end of having constructed, carry out spreading by Flange joint.
Six, the embedding rock anchoring construction of pile foundation steel pile casting 3 is remained
Positioning guiding rack 1 is spreading all, and carry out the embedding rock anchoring construction of 7#, 8#, 9# pile foundation steel pile casting 3, then carry out the embedding rock anchoring construction of 10#, 11#, 12# pile foundation steel pile casting 3, construction method is identical with steel pile casting 3 construction method of having constructed above.
Seven, operation platform is set up
After the embedding rock anchoring of steel pile casting 3 completes, steel pile casting 3 is welded respectively and is cemented on leading truck 1.Be surface layer load-carrying members with leading truck 1, arrange distribution beam and panel, form formal Pile Installation Platform 4.Cut off the connection between positioning guiding rack 1 and jack-up unit 2, jack-up unit 2 drop to the water surface, deactivates.
Eight, pile foundation bore forming is remained
On steel pile casting 3 operation platform, carry out the construction that 2#, 4-12# pour into steel pipe pile foundation pile respectively, construction method is identical with 1#, 3# cast-in-place pile construction method of constructing.
Industrial applicibility of the present invention
1, carry out deep-water bridge pile foundation construction based on jack-up unit, construction environment applicability is good, especially under the extreme natural environments such as deep water, macrotidal range, high sea, has good applicability;
2, leading truck has dual-use function, and early stage, the later stage was as operation platform surface layer load-carrying members as steel pile casting guidance system;
3, cantilevered leading truck adopts merogenesis to make, and on-the-spot Flange joint extends, and often joint leading truck carries out welding consolidation with the steel pile casting of anchoring, and structural stability is higher, the risk of likely toppling under avoiding great cantilever situation, constructs more safe and reliable;
4, leading truck sinking hole height is large, and rigidity is large, and arranges upper and lower two-layer pushing tow adjusting device, and adjustable range is large, and guidance capability is good, and steel pile casting sinking quality is good in the presence of a harsh environment, and precision is high;
5, combine auxiliary steel pipe pile platform construction method compared to steel pile casting, can save construction material in a large number, the construction period shortens.
Although embodiment of the present invention are open as above, it is not restricted to listed in manual and embodiment utilization.It can be applied to various applicable the field of the invention completely.For those skilled in the art, can easily realize other amendment.Therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.

Claims (6)

1. a deep-water bridge pile base construction method, is characterized in that, comprises the following steps:
S1, location jack-up unit, be fixed on described jack-up unit front end by the leading truck group of first sections, and described leading truck group is provided with the sinking hole that at least two are placed steel pile casting;
S2, steel pile casting sinking is being needed the sinking hole of leading pile, carry out embedding rock anchoring and bore forming, put steel pile casting subsequently to other sinking inner hole depositions and carry out embedding rock anchoring construction, with the leading truck group of first sections for load-carrying members, set up first segmental construction platform, remove described jack-up unit afterwards;
S3, the lifting of the leading truck group of the second sections is carried out spreading to the leading truck group front end of first sections, one by one sinking steel pile casting carry out embedding rock anchoring construction, with the leading truck group of the second sections for load-carrying members, set up the second sections operation platform; And
S4, repetition step S3, until all segmental construction platform buildings are complete, carry out bore forming to the steel pile casting of non-bore forming;
Wherein, the leading truck group of any sections is that several leading trucks perpendicular to described jack-up unit front end are formed, and shown leading truck is the trussed construction of upper, middle and lower compound steel pipe composition.
2. deep-water bridge pile base construction method as claimed in claim 1, it is characterized in that, in step S1, the location of jack-up unit comprises the following steps:
S11, employing gps system guide jack-up unit to complete just location, adopt at least two total powerstations to check the location of jack-up units;
S12, controlled the transferring of hydraulic column of jack-up unit by described total powerstation.
3. deep-water bridge pile base construction method as claimed in claim 2, it is characterized in that, the steel pile casting of sinking described in step S2 comprises the following steps:
S21, measure the center of stake position by GPS navigation system, thus location rig, after being removed by design checking later stage jack-up unit, operation platform from steady condition, determine the sinking hole needing leading pile, adopt the scar of the little stroke of rig to pile position to impact, until flat for the punching of the scar of pile position, then scar is washed into the dark pitting of 0.5m;
Corresponding sinking hole on S22, hoisting steel casing to leading truck, by in steel pile casting vertical subsidence to described pitting, steel pile casting checks off normal and the gradient of steel pile casting after arriving scar, after meeting the demands with shaped steel by steel pile casting top temporary consolidation on leading truck, if do not meet the demands, hoisting steel casing adjusts again.
4. deep-water bridge pile base construction method as claimed in claim 3, it is characterized in that, described in step S2, embedding rock anchoring and bore forming comprise the following steps:
S23, in the steel pile casting of pile position, carry out punching operation, described steel pile casting follows up along with hole depth, until described steel pile casting reaches design socket length, build steel pile casting bottom concrete, make the gap between steel pile casting and basement rock described in concrete and filled with mortar;
S24, in described steel pile casting, little stroke repeated stock pulping is adopted to spud in, timely clear hole behind whole hole, sediment at the bottom of perform hole of going forward side by side detects and pore-forming Data Detection, detect by rear, transfer precast reinforced cage successively and fill with concrete conduit, and again carry out sediment detection, detect by rear cast underwater concrete, complete bore forming;
S25, according to the method for step S23, embedding rock anchoring is carried out to the steel pile casting of non-pile position.
5. deep-water bridge pile base construction method as claimed in claim 4, it is characterized in that, also comprise in step S2 between adjacent steel pile casting and being connected, be specially: adjacent steel pile casting is connected with diagonal brace by lateral, lateral adopts Harvard's weld, and welding quality controls by three grades of weld seam standard tests.
6. deep-water bridge pile base construction method as claimed in claim 5, it is characterized in that, the construction of spreading described in step S3 comprises the following steps:
S31, save between the steel pile casting in leading truck group at head, shaped steel is welded as the lower transverse beam of the middle level steel pipe of leading truck, and weld middle level steel pipe and the lower transverse beam of U-shaped Interal fixation leading truck, at the outside Weld-supporting bracket of the steel pile casting of first sections leading truck group end;
S32, adopt crawler crane lifting to the front end of first sections leading truck the second sections leading truck group, carry out spreading by Flange joint.
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Cited By (14)

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CN105714689A (en) * 2016-03-17 2016-06-29 王燏斌 Sinking and floating construction method for main tower of bridge
CN105735133A (en) * 2016-03-17 2016-07-06 王燏斌 Pier sinking and floating construction method
CN106193037A (en) * 2016-08-25 2016-12-07 中交第二航务工程局有限公司 Assembling mobile platform for pile sinking
CN106284089A (en) * 2016-08-31 2017-01-04 中铁大桥局集团有限公司 A kind of steel trestle rapid constructing method
CN106400763A (en) * 2016-09-23 2017-02-15 中交第三航务工程局有限公司宁波分公司 Construction method of socketed pile
CN106759433A (en) * 2016-10-31 2017-05-31 江苏华西村海洋工程服务有限公司 Wind-powered electricity generation and the embedding rock construction technology of bridge
CN107012881A (en) * 2017-05-24 2017-08-04 浙江明通建设工程有限公司 Bridge Pile Foundation Construction method
CN107190776A (en) * 2017-06-13 2017-09-22 中交二航局第三工程有限公司 Water discharge tunnel standpipe plants pipe construction device and method
CN108239919A (en) * 2017-07-26 2018-07-03 北京九州动脉隧道技术有限公司 The device and construction method of a kind of underwater cushion cap, the underwater cushion cap of structure
CN109707307A (en) * 2018-12-11 2019-05-03 中铁五局集团贵州工程有限公司 At the construction method of polygon annular groove on a kind of rock stratum under water
CN110468866A (en) * 2019-07-11 2019-11-19 中冶交通建设集团有限公司 Pile foundation in water construction method
CN110924307A (en) * 2019-11-28 2020-03-27 中铁广州工程局集团桥梁工程有限公司 Trestle construction method for bare rock geology
CN111733802A (en) * 2020-07-03 2020-10-02 中铁八局集团建筑工程有限公司 Construction method of cast-in-place pile penetrating through karst cave
CN111794115A (en) * 2020-07-22 2020-10-20 上海同罡建筑工程有限公司 Construction method of temporary buttress in water

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