CN108360545B - It tilts open caisson and combines deviation rectification construction method - Google Patents

It tilts open caisson and combines deviation rectification construction method Download PDF

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CN108360545B
CN108360545B CN201810252458.4A CN201810252458A CN108360545B CN 108360545 B CN108360545 B CN 108360545B CN 201810252458 A CN201810252458 A CN 201810252458A CN 108360545 B CN108360545 B CN 108360545B
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hole
lifting
open caisson
forced landing
lifted
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CN108360545A (en
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叶香雄
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D23/00—Caissons; Construction or placing of caissons
    • E02D23/08—Lowering or sinking caissons
    • E02D23/14—Decreasing the skin friction while lowering
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D23/00—Caissons; Construction or placing of caissons
    • E02D23/08—Lowering or sinking caissons
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D23/00—Caissons; Construction or placing of caissons
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
    • E02D35/005—Lowering or lifting of foundation structures

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Earth Drilling (AREA)

Abstract

The invention discloses a kind of inclination open caissons to combine deviation rectification construction method, it is characterized in that the side setting forced landing hole slow in well sinking, forced landing bore dia is 75~120mm, forced landing pitch of holes is 1.5~2.2m, in the fast side setting lifting hole of well sinking, lifting bore dia is 60~90mm, lifting pitch of holes is 1.8~2.5m, lifting hole depth is 2.2~2.5 times of open caisson height, hole is lifted using two rows of, it is lifted hole and injects cement slurry, the cement slurry ratio of mud is 0.45~0.5, and cement slurry mixes calcium sulphoaluminate class swelling agent；Correction sequence is first to force-land, then be lifted, and forced landing or lifting are all made of information-aided construction.

Description

It tilts open caisson and combines deviation rectification construction method
Technical field
The present invention relates to deviation rectification construction method, in particular to a kind of inclination open caisson combines deviation rectification construction method.
Background technique
It is easy to appear inclination during open caisson construction, to be rectified a deviation after inclination of open caisson, traditional open caisson deviation rectification method has digging Local method and increase external loads method, excavation method are cut the earth to the slow one side that sinks more, increase the gap between caisson cutting edge and soil, Promote its sinking.To sinking, fast one side is optionally cut the earth less, is not cut the earth or mound and heap rammed earth, and sinking frictional resistance is increased, Slow down subsidence velocity.Increasing external loads method is to increase load in the slow side of well sinking, while hollowing out under its blade foot, with Benefit overcomes frictional resistance to correct deflection.The problems of these traditional technologies are difficult to control in work progress, and correction is easy It exceeds the proper limits in righting a wrong.
Summary of the invention
For the deficiencies in the prior art, the purpose of the present invention is to provide a kind of inclination open caissons to combine Deviation Correction Construction Method guarantees rectifying effect.
The present invention side setting forced landing hole slow in well sinking, forced landing bore dia is 75~120mm, and forced landing pitch of holes is 1.5~2.2m, forming forced landing hole using bore mode reduces caisson wall and its surrounding soil frictional force, in boring procedure Constantly water filling makes well sinking, correction technique is instructed using intelligent control method, drilling machine drilling speed and water injection pressure are according to soil property It is adjusted with correction rate.
In the fast side setting lifting hole of well sinking, lifting bore dia is 60~90mm, be lifted pitch of holes for 1.8~ 2.5m, lifting hole depth are 2.2~2.5 times of open caisson height, and lifting hole is using two rows, and two rows lifting hole arrangement parameters are using such as Under: first row lifting hole be it is vertical, it is 500~700mm that first row, which is lifted hole from open caisson Edge Distance, and second row is lifted hole to incline Tiltedly, gradient is 60~70 degree, and gradient refers to that lifting hole and horizontal angle, second row are lifted hole from open caisson edge here Distance is 1000~1200mm；Two rows lifting hole arrangement parameter can also use as follows: first row is lifted hole as inclination, gradient It is 60~70 degree, it is 1000~1200mm that first row, which is lifted hole from open caisson Edge Distance, and it is inclination, gradient that second row, which is lifted hole, It is 60~70 degree, second row is lifted hole and first row lifting hole parallel arrangement, and second row is lifted hole from open caisson Edge Distance and is 1500~1700mm；It is lifted hole and injects cement slurry, the cement slurry ratio of mud is 0.45~0.5, and it is swollen that cement slurry mixes calcium sulphoaluminate class Swollen dose, enters after the soil body mixed with the cement slurry of calcium sulphoaluminate class swelling agent and will appear hydration reaction, foundation soil body in hydration process Product expansion generates lifting force to open caisson, and the volume of calcium sulphoaluminate class swelling agent is directly related with the lifting force of open caisson, mixed with sulphur aluminium The cement slurry of sour calcium class swelling agent has not only acted as the effect of expansion lifting after entering the soil body, and plays compacted compacting and make With with the setting expansion of the cement slurry of calcium sulphoaluminate class swelling agent, foundation soil body compactness is obviously increased, and compressibility reduces. The volume of calcium sulphoaluminate class swelling agent is determined according to Uplifting amount, when Uplifting amount is greater than or equal to 100mm, the expansion of calcium sulphoaluminate class The volume of agent is 7%；When Uplifting amount is greater than 50mm and is less than 100mm, the volume of calcium sulphoaluminate class swelling agent is 6%；Uplifting amount When less than 50mm, the volume of calcium sulphoaluminate class swelling agent is 5%.
Correction sequence is first to force-land, then be lifted, and forced landing or lifting are all made of information-aided construction, at the top of open caisson Cloth displacement sensor, displacement sensor is connect with computer carries out intelligent control, and displacement sensor transfers data to electricity immediately Brain, every sinking or lifting 2mm draw a curve to computer according to the collected data, and provide correction rate according to the slope of curve, Analysis correction development trend.
Penetration rate and water injection pressure are adjusted according to soil property and fall rate in forced landing work progress, when open caisson bottom For muck soil, when fall rate is less than or equal to 0.02mm/min, drilling machine drilling speed is less than or equal to 120r/min and is greater than 110r/min, water injection pressure 1.3MPa；When the soil property that drills is muck soil, fall rate is greater than 0.02mm/min and is less than When 0.03mm/min, drilling machine drilling speed is less than or equal to 110r/min and is greater than 100r/min, water injection pressure 1.3MPa；Work as drilling Soil property be muck soil when, fall rate be greater than or equal to 0.03mm/min when, drilling machine drilling speed be less than or equal to 100r/min and Greater than 90r/min, water injection pressure 1.3MPa；
When open caisson bottom is clay, and fall rate is less than or equal to 0.02mm/min, drilling machine drilling speed is less than or equal to 90r/min and be greater than 80r/min, water injection pressure 1.2MPa；When drilling soil property is clay, fall rate is greater than 0.02mm/min And when being less than 0.03mm/min, drilling machine drilling speed is less than or equal to 80r/min and is greater than 75r/min, water injection pressure 1.2MPa；When Drilling soil property is clay, and when fall rate is greater than or equal to 0.03mm/min, drilling machine drilling speed is less than or equal to 75r/min and is greater than 70r/min, water injection pressure 1.2MPa；
When open caisson bottom is silt, and fall rate is less than or equal to 0.02mm/min, drilling machine drilling speed is less than or equal to 70r/min and be greater than 65r/min, water injection pressure 1.1MPa；When drilling soil property is silt, fall rate is greater than 0.02mm/min And when being less than 0.03mm/min, drilling machine drilling speed is less than or equal to 65r/min and is greater than 60r/min, water injection pressure 1.1MPa；When Drilling soil property is silt, and when fall rate is greater than or equal to 0.03mm/min, drilling machine drilling speed is less than or equal to 60r/min and is greater than 55r/min, water injection pressure 1.1MPa；
When open caisson bottom is sand, and fall rate is less than or equal to 0.02mm/min, drilling machine drilling speed is less than or equal to 55r/min and be greater than 50r/min, water injection pressure 1.0MPa；When drilling soil property is sand, fall rate is greater than 0.02mm/min And when being less than 0.03mm/min, drilling machine drilling speed is less than or equal to 50r/min and is greater than 45r/min, water injection pressure 1.0MPa；When Drilling soil property is sand, and when fall rate is greater than or equal to 0.03mm/min, drilling machine drilling speed is less than or equal to 45r/min and is greater than 40r/min, water injection pressure 1.0MPa；
In silt or sand, open caisson can be difficult to, and can use following technical measures: pass through note after pore-forming Slurry pipe injects the water mixed with montmorillonite, passes through Grouting Pipe injection hole at once after the montmorillonite of incorporation 1%~2% in water In, it is expanded to the bead that diameter is 3~5mm after montmorillonite access aperture and is attached to open caisson wall, sliding friction is made to become rolling Friction, reduces hole wall frictional force, is conducive to correction and tells on.If geology there are drifting sand layer, incorporation 2%~3% it is pure Alkali improves slurry consistency, and increase receives ion to change the sub- hydrating capacity of grogs.
Construction is lifted using interval construction, i.e., first constructs and finishes the lifting hole of odd indexed, then the lift for even number serial number of constructing Hole is risen, serial number carries out layout from left to right, prevents adjacent lifting hole from starching because pitch-row closely influences each other or be lifted hole in construction excessively Liquid expansive force discharges and influences correcting and then reinforcing effect.Pass through the interval of 20~30min after the lifting hole construction of odd indexed The lifting hole for even number serial number of constructing again after time, it is therefore an objective to which allowing swelling stress to obtain certain release ensures rectifying effect.
The present invention has the advantages that rectifying effect is good, safe and reliable, with good application prospect.
Detailed description of the invention
Fig. 1 is open caisson deviation rectification plan view one, and Fig. 2 is open caisson deviation rectification facade arrangement schematic diagram one, and Fig. 3 is open caisson Correction plan view two, Fig. 4 are open caisson deviation rectification facade arrangement schematic diagram two.
Attached drawing mark: 1, hole of force-landing, 2, lifting hole, 3, open caisson.
Specific embodiment
The present embodiment is described in detail below in conjunction with attached drawing.
Embodiment one
Fig. 1 is open caisson deviation rectification plan view one, and Fig. 2 is open caisson deviation rectification facade arrangement schematic diagram one.The present embodiment Forced landing hole 1 is set in the side that open caisson 3 sinks slow, forced landing 1 diameter of hole is 80mm, and forced landing 1 spacing of hole is 1.7m, using drilling side Formula, which forms forced landing hole 1, reduces 3 borehole wall of open caisson and its surrounding soil frictional force, and constantly water filling makes under open caisson 3 in boring procedure It is heavy, instruct correction technique, drilling machine drilling speed and water injection pressure to be adjusted according to soil property and correction rate using intelligent control method It is whole.
Lifting hole 2 is set in the side that open caisson 3 sinks fast, lifting 2 diameter of hole is 70mm, and lifting 2 depth of hole is 2.2 times heavy 3 height of well, lifting 2 spacing of hole are 2m, and lifting hole 2 is using two rows, and two rows lifting 2 arrangement parameter of hole is using as follows: first row lift Rise hole 2 be it is vertical, it is 600mm that first row, which is lifted hole 2 from 3 Edge Distance of open caisson, and second row is lifted hole 2 to tilt, and gradient is 65 degree, it is 1100mm that second row, which is lifted hole 2 from 3 Edge Distance of open caisson,；It is lifted hole 2 and injects cement slurry, the cement slurry ratio of mud is 0.45, cement slurry mixes calcium sulphoaluminate class swelling agent.Uplifting amount is 70mm, and the volume of calcium sulphoaluminate class swelling agent is 6%.
Correction sequence is first to force-land, then be lifted, and forced landing or lifting are all made of information-aided construction, is pushed up in open caisson 3 Portion's cloth displacement sensor, displacement sensor is connect with computer carries out intelligent control, and displacement sensor transfers data to immediately Computer, every sinking or lifting 2mm draw a curve to computer according to the collected data, and provide correction speed according to the slope of curve Rate, analysis correction development trend.
Penetration rate and water injection pressure are adjusted according to soil property and fall rate in forced landing work progress, 3 bottom of open caisson For clay, when fall rate is less than or equal to 0.02mm/min, drilling machine drilling speed is less than or equal to 90r/min and is greater than 80r/min, Water injection pressure is 1.2MPa；When fall rate is greater than 0.02mm/min and is less than 0.03mm/min, drilling machine drilling speed is less than or equal to 80r/min and be greater than 75r/min, water injection pressure 1.2MPa；When fall rate is greater than or equal to 0.03mm/min, drilling machine drilling speed Less than or equal to 75r/min and it is greater than 70r/min, water injection pressure 1.2MPa；
Construction is lifted using interval construction, i.e., first constructs and finishes the lifting hole 2 of odd indexed, then the lift for even number serial number of constructing Hole 2 is risen, serial number carries out layout from left to right.The intermittent time of 20~30min is passed through in the lifting hole 2 of odd indexed after constructing The lifting hole 2 for even number serial number of constructing again afterwards.
Embodiment two
Fig. 3 is open caisson deviation rectification plan view two, and Fig. 4 is open caisson deviation rectification facade arrangement schematic diagram two.
Forced landing hole 1 is arranged in the side that open caisson 3 sinks slow in the present embodiment, and forced landing 1 diameter of hole is 80mm, 1 spacing of hole of force-landing For 1.7m, forming forced landing hole 1 using bore mode reduces 3 borehole wall of open caisson and its surrounding soil frictional force, in boring procedure Constantly water filling makes open caisson 3 sink, and correction technique is instructed using intelligent control method, drilling machine drilling speed and water injection pressure are according to soil property It is adjusted with correction rate.
Lifting hole 2 is set in the side that open caisson 3 sinks fast, lifting 2 diameter of hole is 70mm, and lifting 2 depth of hole is 2.3 times heavy 3 height of well, lifting 2 spacing of hole are 2m, and lifting hole 2 is using two rows, and two rows lifting 2 arrangement parameter of hole is using as follows: first row lift Rising hole 2 is inclination, and gradient is 65 degree, and it is 1100mm that first row, which is lifted hole 2 from 3 Edge Distance of open caisson, and second row lifting hole 2 is Inclination, gradient are 65 degree, and second row is lifted hole 2 and first row lifting hole 2 and is arranged in parallel, and second row is lifted hole 2 from 3 side of open caisson Edge distance is 1600mm；It is lifted hole 2 and injects cement slurry, the cement slurry ratio of mud is 0.45, and cement slurry mixes the expansion of calcium sulphoaluminate class Agent.Uplifting amount is 70mm, and the volume of calcium sulphoaluminate class swelling agent is 6%.
Correction sequence is first to force-land, then be lifted, and forced landing or lifting are all made of information-aided construction, is pushed up in open caisson 3 Portion's cloth displacement sensor, displacement sensor is connect with computer carries out intelligent control, and displacement sensor transfers data to immediately Computer, every sinking 2mm draws a curve to computer according to the collected data, and provides correction rate according to the slope of curve, analyzes Correction development trend.
Penetration rate and water injection pressure are adjusted according to soil property and fall rate in forced landing work progress, 3 bottom of open caisson For clay, when fall rate is less than or equal to 0.02mm/min, drilling machine drilling speed is less than or equal to 90r/min and is greater than 80r/min, Water injection pressure is 1.2MPa；When fall rate is greater than 0.02mm/min and is less than 0.03mm/min, drilling machine drilling speed is less than or equal to 80r/min and be greater than 75r/min, water injection pressure 1.2MPa；When fall rate is greater than or equal to 0.03mm/min, drilling machine drilling speed Less than or equal to 75r/min and it is greater than 70r/min, water injection pressure 1.2MPa；
Construction is lifted using interval construction, i.e., first constructs and finishes the lifting hole 2 of odd indexed, then the lift for even number serial number of constructing Hole 2 is risen, serial number carries out layout from left to right.The intermittent time of 20~30min is passed through in the lifting hole 2 of odd indexed after constructing The lifting hole 2 for even number serial number of constructing again afterwards.

Claims (1)

1. a kind of inclination open caisson combines deviation rectification construction method, it is characterized in that the side setting forced landing hole slow in well sinking, forced landing Bore dia is 75~120mm, and forced landing pitch of holes is 1.5~2.2m, and forming forced landing hole using bore mode makes caisson wall and its Surrounding soil frictional force is reduced, and constantly water filling makes well sinking in boring procedure, instructs to rectify a deviation using intelligent control method Technique, drilling machine drilling speed and water injection pressure are adjusted according to soil property and correction rate；
In the fast side setting lifting hole of well sinking, lifting bore dia is 60~90mm, and lifting pitch of holes is 1.8~2.5m, Lifting hole depth is 2.2~2.5 times of open caisson height, and cement slurry is injected using two rows, lifting hole in lifting hole, and the cement slurry ratio of mud is 0.45~0.5, cement slurry mixes calcium sulphoaluminate class swelling agent；
Correction sequence is first to force-land, then be lifted, and forced landing or lifting are all made of information-aided construction, in open caisson top layout Displacement sensor, displacement sensor is connect with computer carries out intelligent control, and displacement sensor transfers data to computer immediately, electricity Every sinking or lifting 2mm draw a curve to brain according to the collected data, and provide correction rate according to the slope of curve, and analysis is entangled Inclined development trend；
In silt or sand, forced landing construction uses following technical measures: being injected by Grouting Pipe mixed with micro- after pore-forming Brilliant kaolinic water, at once by Grouting Pipe injection hole after the montmorillonite of incorporation 1%~2% in water, montmorillonite It is expanded to the bead that diameter is 3~5mm after access aperture and is attached to open caisson wall, so that sliding friction is become rolling friction, reduces hole Wall friction power.
CN201810252458.4A 2016-11-17 2016-11-17 It tilts open caisson and combines deviation rectification construction method Active CN108360545B (en)

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CN201611062968.2A CN106592615B (en) 2016-11-17 2016-11-17 Tilt open caisson deviation rectification construction method
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CN201810252548.3A Active CN108396760B (en) 2016-11-17 2016-11-17 Combined deviation-rectifying construction technology for inclined open caisson
CN201810252386.3A Active CN108396759B (en) 2016-11-17 2016-11-17 Deviation rectifying construction method for inclined open caisson under different soil conditions
CN201611062968.2A Active CN106592615B (en) 2016-11-17 2016-11-17 Tilt open caisson deviation rectification construction method
CN201810251485.XA Active CN108396758B (en) 2016-11-17 2016-11-17 Open caisson deviation rectifying construction method
CN201810251650.1A Active CN108442425B (en) 2016-11-17 2016-11-17 Inclined open caisson deviation rectification construction technology
CN201810252828.4A Active CN108487278B (en) 2016-11-17 2016-11-17 Open caisson deviation rectification construction technology
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CN201810252386.3A Active CN108396759B (en) 2016-11-17 2016-11-17 Deviation rectifying construction method for inclined open caisson under different soil conditions
CN201611062968.2A Active CN106592615B (en) 2016-11-17 2016-11-17 Tilt open caisson deviation rectification construction method
CN201810251485.XA Active CN108396758B (en) 2016-11-17 2016-11-17 Open caisson deviation rectifying construction method
CN201810251650.1A Active CN108442425B (en) 2016-11-17 2016-11-17 Inclined open caisson deviation rectification construction technology
CN201810252828.4A Active CN108487278B (en) 2016-11-17 2016-11-17 Open caisson deviation rectification construction technology

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CN108396760B (en) * 2016-11-17 2020-02-04 叶香雄 Combined deviation-rectifying construction technology for inclined open caisson
CN107246037A (en) * 2017-08-09 2017-10-13 上海岩土工程勘察设计研究院有限公司 A kind of rectifying of leaned building structure and method for stake end sandy soil supporting course
CN110144921A (en) * 2019-06-06 2019-08-20 广东水利电力职业技术学院（广东省水利电力技工学校） A kind of simple and efficient open caisson deviation rectification method

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CN1021982C (en) * 1991-06-26 1993-09-01 黄正轩 Method for correcting and reinforcing inclination of house
JP2002004296A (en) * 2000-06-19 2002-01-09 Takenaka Doboku Co Ltd Surface preparation device for excavation of cutting edge part for enlarging diameter of open caisson
CN2654698Y (en) * 2003-06-30 2004-11-10 唐业清 Negative frictional force inclined correction precipitation well
CN100567660C (en) * 2007-12-26 2009-12-09 南京工业大学 Construction method for rectifying deviation of open caisson by using preset force
CN101793098B (en) * 2010-03-13 2011-09-07 中铁西北科学研究院有限公司 Coordinated interactive combined rectification method
CN102926394B (en) * 2010-06-05 2015-03-25 朱虹 Method for using lime piles to rectify deviation of open caisson
CN102912807B (en) * 2010-06-05 2015-11-25 朱虹 A kind of open caisson jacking deviation rectifying method
CN102251542A (en) * 2011-04-18 2011-11-23 张继红 Construction method for deviation correction of pile foundation by high-pressure spraying disturbance and construction equipment used in same
CN103938663A (en) * 2013-10-29 2014-07-23 国家电网公司 Correction device of inclined power transmission tower made of signal-splicing steel angle principal material
JP6386829B2 (en) * 2014-08-08 2018-09-05 大成建設株式会社 Pneumatic caisson tilt correction method
CN105863362B (en) * 2016-04-13 2017-11-14 太原理工大学 A kind of deviation correcting device for being used to tilt electric power pylon
CN108396760B (en) * 2016-11-17 2020-02-04 叶香雄 Combined deviation-rectifying construction technology for inclined open caisson

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CN108487278A (en) 2018-09-04
CN108396760A (en) 2018-08-14
CN108442425A (en) 2018-08-24
CN108396760B (en) 2020-02-04
CN108360545A (en) 2018-08-03
CN108396758A (en) 2018-08-14
CN108396759A (en) 2018-08-14
CN108396758B (en) 2020-02-21
CN108396759B (en) 2020-02-04
CN108442425B (en) 2020-01-17
CN106592615B (en) 2018-08-07
CN108487278B (en) 2020-02-28
CN106592615A (en) 2017-04-26

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