CN107130611A - A kind of design and construction method of the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled - Google Patents

A kind of design and construction method of the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled Download PDF

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Publication number
CN107130611A
CN107130611A CN201710396035.5A CN201710396035A CN107130611A CN 107130611 A CN107130611 A CN 107130611A CN 201710396035 A CN201710396035 A CN 201710396035A CN 107130611 A CN107130611 A CN 107130611A
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construction
campshed
circular section
steel
design
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CN107130611B (en
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王复明
潘艳辉
赵鹏
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Wang Fuming
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Zhengzhou Anyuan Engineering Technology Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D11/00Methods or apparatus specially adapted for both placing and removing sheet pile bulkheads, piles, or mould-pipes

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Piles And Underground Anchors (AREA)
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Abstract

The present invention relates to a kind of design and construction method of the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled, comprise the following steps:(One)The construction of circular section campshed;(Two)Shaped steel Guan Liang is installed;(Three)Steel facing is installed and steel facing grouting behind shaft or drift lining;(Four)Vertical layered excavation section by section successively,(Five)Repeat step(Three), (four), construction is to projected depth;(Six)Supporting construction is completed using after function, as foundation ditch backfills the carry out recovery operation that just can have step.Many advantages, such as recyclable circular section Row Piles Supporting Structure system of flexible compound antiseepage assembled that the present invention is built has safe and reliable, quick construction, advanced technology, recyclable recycling, superior mixed economy environmental protection index, for the projects such as foundation ditch, side slope, Subway station, municipal pipeline excavation supporting provide advanced technology, it is safe and reliable, can high efficiente callback recycling, the superior new method of economic and environment-friendly index, development and application prospect is considerable.

Description

A kind of design of the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled Construction method
Technical field
The invention belongs to the excavation supporting technical field of the infrastructure such as building, water conservancy, mine, municipal administration, and in particular to each The recyclable circular section row of the flexible compound antiseepage assembled faced of the project excavation construction such as class side slope, foundation ditch, municipal pipeline The design and construction method of stake supporting construction.
Background technology
Since founding of New, the infrastructure construction such as China's building, water conservancy, mine, municipal administration achieves highly visible Achievement.During underground space development, mining mineral resource etc., when facing the geological conditions of complexity, generally require Slope retaining or pattern foundation pit supporting structure measure are taken, to ensure that the safety of underground engineering construction process and the surrounding enviroment during this is steady It is fixed.Along with the development of Geotechnical Engineering, machinery and civil engineering material etc., slope retaining and Base hole supporting technology are obtained Effective development, correspondingly occur in that soil nail wall using traditional building materials such as sandstone, cement, reinforcing bar, concrete as main structure body, The supporting structure systems such as composite soil nailing wall, diaphram wall, campshed supporting, pile-anchor retaining.At the same time, it is control underground water pair The influence of supporting construction and underground engineering construction, need to also consider to set water-stop curtain or be aided with precipitation to arrange in support system Apply.Particularly level of ground water is higher, in the case of the softer easy disturbance of side wall soil layer, pattern foundation pit supporting structure must take into consideration side wall antiseepage and Groundwater Control measure.Comparatively speaking, sealing mode is taken, surrounding building, structures is more can guarantee that and closes on underground utilities Safety, be more often the periphery surface cracks that induce of creep of the side wall soil body and the thing such as differential settlement of building Therefore.Theoretically, enough safety measures are taken, it is ensured that side slope or deep pit monitor under any need state.But from foundation ditch From the point of view of the essence of supporting, its as main structure construction under protecting field and the safety of surrounding enviroment, and take provisional supporting and retaining system, Reinforcing, protection and the measure of Groundwater Control, and foundation ditch is deeper, surrounding enviroment are more complicated, the cost of base pit engineering is also higher, More important point is that the service life of foundation ditch is usually no more than 2 years, gone out of use after underground main structure construction is finished or Person's mandatory dismantling.As can be seen here, compared with major project, the cost of base pit engineering is just very expensive.Even if a small number of at this stage Foundation ditch employs the supporting construction design integrated with underground engineering agent structure, in the case, and follow-up foundation engineering is applied The reduction of work efficiency rate, cost of labor increase severely and the potential risk of subsequent construction seam seepage is also very high.
In the construction material currently generally used, the processing characteristics of steel is preferable, excellent in mechanical performance, in civil engineering In be widely used.At the same time, high polymer grouting technology is that the foundation grown up 1970s is fast Fast reinforcement technique.The technology is by injecting high polymer material into ground, the body after being chemically reacted using high polymer material The rapid characteristic for expanding and solidifying of product, reach consolidated subsoil, filling come to nothing or lift structure decanting zone purpose.This patent is based on The mechanics of steel and it is good can processing characteristics and the characteristic research of high polymer grouting technology, in the Research foundation of this team early stage On, including the base that the numbering applied is 201310123667.6,201610078440.8 and 201610077784.7 patents On plinth, and using each to stress equalization of symmetrical circular section component, the stronger characteristic of reply deviation pressure has invented a kind of flexibility The design and construction method of the recyclable circular section Row Piles Supporting Structure of composite anti-penetrating assembled, is building, water conservancy, mine, municipal administration etc. The excavation of the projects such as foundation ditch, side slope, Subway station, the municipal pipeline of industry provides brand-new support technology, with the valency of recovery Value is high and repeats the features such as utilization and standardized designs are with construction.The current country yet there are no on flexible compound antiseepage assembling The relevant report of the recyclable circular section Row Piles Supporting Structure of formula.
The content of the invention
The present invention is for growth requirements of the excavation supporting of project such as foundation ditch, side slope, Subway station, municipal pipelines and at present The deficiency that support technology is present, has invented a kind of design of the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled Construction method.The present invention is the design concept for proposing flexible compound first in the essence from base pit engineering, and in foundation ditch branch The accurate manufacture of machinery, the thought of assembled in situ standardized production are introduced in protection structure system, and based on earth pressure theory research and development Come.In construction technology, by the plane positioning leveling block of independent design, the plane positioning leveling block is according to circular section Campshed size design, it is incoming therefrom to be just met for the latter, and itself has self levelling function, corrects flat by plane positioning The center that platform is previously set and circular section campshed center superposition, the construction needs for realizing circular section campshed of energy high precision, and will The positioning precision of circular section campshed is improved and controlled in millimeter rank, while giving full play to the excellent mechanics of steel and processability Energy, the rapid expanding of high polymer material, barrier characteristics and accurate installation technology, realize the purpose of design of the present invention.Profit Excavation supporting quickly can be carried out to projects such as foundation ditch, side slope, Subway station, municipal pipelines with the invention, after finishing, passed through High efficiency to supporting construction is reclaimed, and can greatly be reduced pattern foundation pit supporting structure cost, truly be realized and complete foundation ditch work The mission of mono- temporary security measures of Cheng Zuowei, is that the excavation supporting of the projects such as foundation ditch, side slope, Subway station, municipal pipeline is carried The new method for having supplied advanced technology, safe and reliable, economic indicator superior.
The technical scheme that the present invention takes is:
A kind of design and construction method of the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled, according to related data After complete design work, support unit needed for first prefabrication processing, then the construction of supporting construction is carried out, work progress is specifically wrapped Include following steps:
(One)Circular section campshed construction, it is comprised the following steps that:
(1)Circular section campshed processing:According to design calculation result, carry out prefabricated circular section of being processed into factory using steel and arrange Stake, in circular section, the top of campshed, pile body correspondence position carry out Guan Liang and install fixing hole, the lifting hole machined of later stage recovery, And penetrate recovery wirerope;According to design needs, circular section Row Piles Supporting Structure uses Single row pillars supporting construction or Double-row Piles Support Structure;
(2)Campshed drilling construction:In specified ground location, carried out using stake machine in the drilling construction of retaining piles, work progress Strict control pore-forming accuracy, including plane positioning precision and stake holes vertical precision;
(3)It is implanted into circular section campshed:Using crane and plane positioning leveling block, circular section campshed is accurately implanted into what is determined Stake holes position, meets the positioning accuracy request of design;When using Retaining Structure with Double-row Piles, front-seat dress, rear stake are controlled in knot Difference on structure;
(4)Stake holes is backfilled, and stake holes is backfilled using the material for being adapted to stratum needs, to ensure the circular section campshed periphery soil body Stabilization, backfilling material be low-grade concrete, sandstone and high polymer material;
(Two)Shaped steel Guan Liang is comprised the following steps that:
(1)The processing of shaped steel Guan Liang:According to foundation ditch shape and design, accurate processing stake top shaped steel Guan Liang and Guan Liang mounting hole are beaten Hole is handled, if necessary using mechanical stretch bending processing technology, to facilitate the bolt connection of shaped steel Guan Liang;
(2)The splicing of shaped steel Guan Liang is installed:After Single row pillars or double pile driving construction are finished, before excavation of foundation pit, first using level Instrument is controlled to the absolute altitude of shaped steel Guan Liang, and then its position is carried out with crane tentatively to fix, finally using high-strength bolt To shaped steel Guan Liang with being fixedly connected at the top of campshed;
(Three)Steel facing is installed, and its Specific construction step is as follows:
(1)The earthwork inside layer and section excavation pit, every layer of cutting depth control is carried out clear in 0.5m or so using manual method Manage the soil body near campshed or front-seat dress, layer and section construction;
(2)Campshed side wall after the cleaning installs steel facing, and specific implementation step is as follows:
A. steel facing is processed:Steel facing size is determined by campshed spacing, suitable manually-operated height first, steel facing is carried out Cut and perforation processing;Steel facing is fixed according to screw, needs to carry out punching processing to steel facing in advance;According to Welder Skill, then should carry out derusting cleaning treatment to welding position before welding;
B. steel facing is installed:Before installation, steel facing is positioned and corrected using spirit level, then according to the need that design and construct Will, steel facing installation is carried out using screw connection or welding procedure, steel facing is firmly fixed in shaped steel slope protection pile;
C. steel facing grouting behind shaft or drift lining:The creep of Pile side soil body is prevented to ensure that steel facing and the side wall soil body are combined closely, in steel facing The high polymer material of injection rapid expanding hardening, forms the thin layer high polymer layer structure with some strength and toughness behind, Both the excessive deformation of the side wall soil body had been can control, seam seepage can be also prevented;
(Four)Vertical layered excavation section by section successively;
(Five)Repeat step(Three), (four), construction to design substrate absolute altitude, that is, complete flexible compound antiseepage assembled it is recyclable The construction of circular section Row Piles Supporting Structure;
(Six)Supporting construction completes, using after function, with the beginning of foundation ditch backfilling working, just to may be recovered the work in stage, Specific recycling step is as follows:
(1)With the progress of foundation ditch backfilling working, bottom steel facing is reclaimed first;
(2)Successively it is backfilling and compacted, successively removes the steel facing for reclaiming corresponding position;
(3)Shaped steel Guan Liang, which is removed, at the top of campshed reclaims;
(4)Crane coordinates hydraulic jack to complete to extract recovery to circular section campshed.
Compared with existing support technology, the present invention has advantages below:
(1)The use function for the new supporting structure that the art of this patent is proposed embodies the essential characteristic of base pit engineering well: Safe and reliable, advanced technology, economic indicator are superior.Base pit engineering as ensure underground main structure construction and take it is interim Safety measure, safe and reliable is primary factor, advanced technology, economic indicator be superior be to discriminate between with evaluate supporting construction it is good and bad can By standard.
(2)Material property plays perfect, fully by the mechanics and processing characteristics of steel, circular symmetric structure it is each to same Property, the rapid expanding of high polymer material, barrier performance combine, and structure power transmission force way is clear and definite, structure is safe and reliable.Have The defect for overcoming the structure partial weakening strength that traditional supporting pile constructing process is brought of effect.
(3)Component is standardized production using the accurate processing of machinery.The foundation pit supporting construction body that the art of this patent is proposed Steel circular section campshed, steel facing, stake top shaped steel Guan Liang in system use the production technology of standardization to carry out, and machinery is accurate to be added Work, while the accurate control by construction link to technique, by installation accuracy control in grade, while being easily installed, It is easy to recycle and reuse, thus for a class problem, is also achieved that the design and construction of standardization.
(4)Quick construction, is not required to health.The factorial praluction such as circular section campshed, steel facing, stake top shaped steel Guan Liang, Scene is worked continuously by sequence of construction, and quick construction is not required to health.High polymer material forms 90% after the reaction in 15 minutes Intensity, toughness and the anti-permeability performance of left and right, compared with traditional supporting structure system, can save more than 50% construction on the whole Duration.
(5)The same set of supporting construction of this patent offer can be met in the range of certain depth, the base that surrounding enviroment are different Cheat supporting design and construction task.
(6)Mixed economy environmental benefit has more advantage.Compared with traditional support technology, the recyclable supporting of flexible compound antiseepage The maximum feature of structure is construction period, can reduce the pollution to environment such as mud, dust, concrete, and foundation ditch service stage safely may be used Lean on, while subsequent recovery value is high and reusable, and save the substantial amounts of construction period.
Therefore, the design and construction for the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled that the present invention is researched and developed Method, has a clear superiority during the project constructions such as foundation ditch, side slope, Subway station, municipal pipeline excavation.With existing branch Shield technology is compared, and the design and construction method of the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled is a whole set of again Brand-new technology, is mainly manifested in:
(1)Brand-new support structure design theory:In foundation pit supporting construction, from the essence of base pit engineering, propose first The design concept of flexible compound, and the accurate manufacture of introducing machinery, assembled in situ standardized production in foundation pit supporting construction system Thought, change over each project supporting construction independent design and playing the i.e. outcast office of use function Face.This supporting construction employs the design and construction of standardization, to same class problem, can use a kind of solution pattern, simplify Design and construction process, after use function has been played, can be achieved the high efficiente callback and recycling of supporting construction, real body Reveal base pit engineering as the essential characteristic of temporary security measures.
(2)The recyclable circular section Row Piles Supporting Structure system stress division of labor of flexible compound antiseepage assembled is clear and definite:High polymer The laminate structure that the toughness of material formation is good has played the effect of " soft " well, fills and has made supporting construction and side wall up Stiffness difference between the soil body so that the compatibility of deformation of piling structure and the side wall soil body, and play simultaneously and anti-blend the control soil body Lateral creep effect;Row Piles Supporting Structure plays the effect of " firm ", and soil pressure is by steel facing by campshed, stake top shaped steel Guan Liang Undertake, rationally, characteristic of material mechanics plays abundant structure stress.The component for undertaking soil pressure possesses uniform in material in itself, respectively to The same sex, clearly, more reasonable structure is reliable for mechanical index.
(3)Construction standardization degree is high:In the recyclable circular section Row Piles Supporting Structure system of flexible compound antiseepage assembled The achievable mechanization such as steel circular section campshed, steel facing, shaped steel Guan Liang accurately process, scene passes through the plane of independent design Leveling block is positioned, the pile position precision of the steel circular section campshed of most critical in supporting construction is brought up into a millimeter rank, is easy to The standardization Fast Installation of follow-up work in every, also allows for later stage recovery and the reuse of structure.
(4)Side slope side wall anti-seepage effect is substantially, with strong points.In pit earthwork digging process, pass through digging process Directly disclose, using rapid expanding of the high polymer material between the side wall soil body and structural system, being formed has toughness and antiseepage The high polymer laminate structure of backwater function, while high polymer material Weak points of the offside wall soil body in expansion process are mended By force so that supporting construction and surrounding soil combination relative close, in the absence of obvious weak link.
(5)The structure rate of recovery is high, high recycling rate:The recyclable circular section campshed supporting knot of flexible compound antiseepage assembled Most components of structure system are the steel member of standardized production, and not only the rate of recovery is high, and recovery value is high;Meanwhile, Support unit after recovery also being repeatedly used in turn in follow-up same class supporting project.
In summary, no matter the present invention is from the design concept of supporting construction, force-mechanism, standardized construction, side wall antiseepage The the recycling and reusing in terms of value for the treatment of effect or structural system all have with existing support technology it is obvious different, Have the advantages that safe and reliable, quick construction, advanced technology, recyclable recycling, economic indicator are superior, and be successfully applied to Foundation pit supporting project, development and application prospect is considerable.
Brief description of the drawings
Fig. 1 circular sections campshed processing node drawing.
Fig. 2 circular sections campshed structural section.
Fig. 3 flexible compound antiseepages circular section Row Piles Supporting Structure cuts open elevation.
Fig. 4 steel facings install node drawing.
Fig. 5 flexible compound antiseepages circular section Row Piles Supporting Structure profile in plan.
Elevation after the completion of the Row Piles Supporting Structure of Fig. 6 flexible compound antiseepages circular section.
Accompanying drawing remarks:1- circular sections campshed, 2- Guan Liangs install fixing hole, and 3- holes for hoist, 4- reclaims wirerope, 5- ground, 6- Stake after stake holes, 7-, 8- backfilling materials, 9- shaped steel Guan Liangs, 10- bolts, 11- steel facings, 12- screws, 13- high polymer materials, 14- Substrate.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
A kind of design and construction method of the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled, its feature exists In, in Design of Retaining Structure of Foundation Pit, from the essence of base pit engineering, propose to build the design concept of flexible compound first, And introduce mechanical accurate manufacture, the thought of assembled in situ standardized production, after being worked according to related data complete design, first factory Support unit needed for prefabricated processing, then carry out in the assembled in situ construction of supporting construction, foundation ditch backfilling process, supporting construction is synchronous Remove and reclaim, and repeatable utilization and standardized designs construction.Work progress specifically includes following steps:
(One)Circular section campshed construction, it is comprised the following steps that:
(1)Circular section campshed 1 is processed:According to design calculation result, carry out prefabricated circular section of being processed into factory using steel and arrange Stake, in circular section, the top of campshed, pile body correspondence position progress Guan Liang installation fixing hole 2, the hole for hoist 3 of later stage recovery add Work, and recovery wirerope 4 is penetrated, as shown in Figure 1.According to design needs, circular section Row Piles Supporting Structure can use Single row pillars supporting Structure, it would however also be possible to employ Retaining Structure with Double-row Piles.
(2)Campshed drilling construction:In the specified position of ground 5, the drilling construction of retaining piles is carried out using stake machine, was constructed Strict control pore-forming accuracy in journey, including plane positioning precision and stake holes vertical precision.
(3)It is implanted into circular section campshed:Using crane, the plane positioning leveling block of independent design, accurately by circular section The position of stake holes 6 that campshed implantation is determined, meets the positioning accuracy request of design.When using Retaining Structure with Double-row Piles, control Front row fills 1, difference of the rear stake 7 in structure.
(4)Stake holes is backfilled, and stake holes is backfilled using the material for being adapted to stratum needs, to ensure circular section campshed periphery The stabilization of the soil body, backfilling material 8 can be for low-grade concrete, sandstone and high polymer material etc., as shown in Figure 2.
(Two)Shaped steel Guan Liang is comprised the following steps that:
(1)The processing of shaped steel Guan Liang 9:According to foundation ditch shape and design, accurate processing stake top shaped steel Guan Liang and Guan Liang mounting hole Punching is handled, if necessary using mechanical stretch bending processing technology, to facilitate the bolt 10 of shaped steel Guan Liang to connect.
(2)The splicing of shaped steel Guan Liang is installed:After Single row pillars or double pile driving construction are finished, before excavation of foundation pit, use first Spirit level is controlled to the absolute altitude of shaped steel Guan Liang, and then its position is carried out with crane tentatively to fix, finally using high-strength Bolt is fixedly connected to shaped steel Guan Liang with campshed top, as shown in Figure 3.
(Three)Steel facing 11 is installed, and its Specific construction step is as follows:
(1)The earthwork inside layer and section excavation pit, every layer of cutting depth control is carried out clear in 0.5m or so using manual method Manage the soil body near campshed or front-seat dress, layer and section construction.
(2)Campshed side wall after the cleaning installs steel facing, and specific implementation step is as follows:
A. steel facing is processed:Steel facing size is determined by campshed spacing, suitable manually-operated height first, steel facing is carried out Cut and perforation processing.Steel facing is fixed according to screw 12, needs to carry out punching processing to steel facing in advance;According to Welder Skill, then should carry out derusting cleaning treatment to welding position before welding.
B. steel facing is installed:Before installation, steel facing is positioned and corrected using spirit level, then according to designing and apply Work needs, and carries out steel facing installation using screw connection or welding procedure, steel facing is firmly fixed into shaped steel slope protection pile On, as shown in Figure 4.
C. steel facing grouting behind shaft or drift lining:The creep of Pile side soil body is prevented to ensure that steel facing and the side wall soil body are combined closely, in steel The high polymer material 13 of panel injection rapid expanding hardening behind, forms the thin layer high polymer stratiform with some strength and toughness Structure, both can control the excessive deformation of the side wall soil body, can also prevent seam seepage, as shown in Figure 5.
(Four)Vertical layered excavation section by section successively;
(Five)Repeat step(Three), (four), construction to design the absolute altitude of substrate 14, that is, complete flexible compound antiseepage assembled can return The construction of circular section Row Piles Supporting Structure is received, as shown in Figure 6.
(Six)Supporting construction completes, using after function, with the beginning of foundation ditch backfilling working, just to may be recovered the stage Work, specific recycling step is as follows:
(1)With the progress of foundation ditch backfilling working, bottom steel facing 13 is reclaimed first.
(2)Successively it is backfilling and compacted, successively removes the steel facing for reclaiming corresponding position.
(3)Shaped steel Guan Liang 9, which is removed, at the top of campshed reclaims.
(4)Crane coordinates hydraulic jack to complete to extract recovery to circular section campshed 1.
Obviously, above-mentioned embodiment is only intended to clearly illustrate example, and the not restriction to embodiment. For those of ordinary skill in the field, other various forms of changes can also be made on the basis of the above description Or change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out Or among changing still in protection scope of the present invention.

Claims (1)

1. a kind of design and construction method of the recyclable circular section Row Piles Supporting Structure of flexible compound antiseepage assembled, its feature exists In work progress specifically includes following steps:
(One)Circular section campshed construction, it is comprised the following steps that:
(1)Circular section campshed processing:According to design calculation result, carry out prefabricated circular section of being processed into factory using steel and arrange Stake, in circular section, the top of campshed, pile body correspondence position carry out Guan Liang and install fixing hole, the lifting hole machined of later stage recovery, And penetrate recovery wirerope;According to design needs, circular section Row Piles Supporting Structure uses Single row pillars supporting construction or Double-row Piles Support Structure;
(2)Campshed drilling construction:In specified ground location, carried out using stake machine in the drilling construction of retaining piles, work progress Strict control pore-forming accuracy, including plane positioning precision and stake holes vertical precision;
(3)It is implanted into circular section campshed:Using crane and plane positioning leveling block, circular section campshed is accurately implanted into what is determined Stake holes position, meets the positioning accuracy request of design;When using Retaining Structure with Double-row Piles, front-seat dress, rear stake are controlled in knot Difference on structure;
(4)Stake holes is backfilled, and stake holes is backfilled using the material for being adapted to stratum needs, to ensure the circular section campshed periphery soil body Stabilization, backfilling material be low-grade concrete, sandstone and high polymer material;
(Two)Shaped steel Guan Liang is comprised the following steps that:
(1)The processing of shaped steel Guan Liang:According to foundation ditch shape and design, accurate processing stake top shaped steel Guan Liang and Guan Liang mounting hole are beaten Hole is handled, if necessary using mechanical stretch bending processing technology, to facilitate the bolt connection of shaped steel Guan Liang;
(2)The splicing of shaped steel Guan Liang is installed:After Single row pillars or double pile driving construction are finished, before excavation of foundation pit, first using level Instrument is controlled to the absolute altitude of shaped steel Guan Liang, and then its position is carried out with crane tentatively to fix, finally using high-strength bolt To shaped steel Guan Liang with being fixedly connected at the top of campshed;
(Three)Steel facing is installed, and its Specific construction step is as follows:
(1)The earthwork inside layer and section excavation pit, every layer of cutting depth control is carried out clear in 0.5m or so using manual method Manage the soil body near campshed or front-seat dress, layer and section construction;
(2)Campshed side wall after the cleaning installs steel facing, and specific implementation step is as follows:
A. steel facing is processed:Steel facing size is determined by campshed spacing, suitable manually-operated height first, steel facing is carried out Cut and perforation processing;Steel facing is fixed according to screw, needs to carry out punching processing to steel facing in advance;According to Welder Skill, then should carry out derusting cleaning treatment to welding position before welding;
B. steel facing is installed:Before installation, steel facing is positioned and corrected using spirit level, then according to the need that design and construct Will, steel facing installation is carried out using screw connection or welding procedure, steel facing is firmly fixed in shaped steel slope protection pile;
C. steel facing grouting behind shaft or drift lining:The creep of Pile side soil body is prevented to ensure that steel facing and the side wall soil body are combined closely, in steel facing The high polymer material of injection rapid expanding hardening, forms the thin layer high polymer layer structure with some strength and toughness behind, Both the excessive deformation of the side wall soil body had been can control, seam seepage can be also prevented;
(Four)Vertical layered excavation section by section successively;
(Five)Repeat step(Three), (four), construction to design substrate absolute altitude, that is, complete flexible compound antiseepage assembled it is recyclable The construction of circular section Row Piles Supporting Structure;
(Six)Supporting construction completes, using after function, with the beginning of foundation ditch backfilling working, just to may be recovered the work in stage, Specific recycling step is as follows:
(1)With the progress of foundation ditch backfilling working, bottom steel facing is reclaimed first;
(2)Successively it is backfilling and compacted, successively removes the steel facing for reclaiming corresponding position;
(3)Shaped steel Guan Liang, which is removed, at the top of campshed reclaims;
(4)Crane coordinates hydraulic jack to complete to extract recovery to circular section campshed.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109295986A (en) * 2018-09-19 2019-02-01 郑州安源工程技术有限公司 The design and construction method of Retaining Structure with Double-row Piles can be recycled in a kind of flexible compound lattice
CN109295985A (en) * 2018-09-19 2019-02-01 郑州安源工程技术有限公司 Campshed can be recycled to the design and construction method of support supporting construction in a kind of flexible compound assembled
CN109356589A (en) * 2018-09-19 2019-02-19 郑州安源工程技术有限公司 The design and construction method of supporting construction can be recycled in a kind of ladder-like deep circle vertical shaft assembled of flexible compound
CN110593266A (en) * 2019-08-26 2019-12-20 中国电建集团贵阳勘测设计研究院有限公司 Construction method of foundation pit ramp reinforcing and supporting structure under heavy-load traffic condition
CN112796277A (en) * 2020-12-10 2021-05-14 中山大学 I-shaped steel pile-steel panel-high polymer composite layer soil retaining structure
CN117107784A (en) * 2023-10-23 2023-11-24 中铁第六勘察设计院集团有限公司 Cover-excavation reverse construction method adopting recyclable steel pipe pile

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Publication number Priority date Publication date Assignee Title
CN109295986A (en) * 2018-09-19 2019-02-01 郑州安源工程技术有限公司 The design and construction method of Retaining Structure with Double-row Piles can be recycled in a kind of flexible compound lattice
CN109295985A (en) * 2018-09-19 2019-02-01 郑州安源工程技术有限公司 Campshed can be recycled to the design and construction method of support supporting construction in a kind of flexible compound assembled
CN109356589A (en) * 2018-09-19 2019-02-19 郑州安源工程技术有限公司 The design and construction method of supporting construction can be recycled in a kind of ladder-like deep circle vertical shaft assembled of flexible compound
CN110593266A (en) * 2019-08-26 2019-12-20 中国电建集团贵阳勘测设计研究院有限公司 Construction method of foundation pit ramp reinforcing and supporting structure under heavy-load traffic condition
CN110593266B (en) * 2019-08-26 2024-03-19 中国电建集团贵阳勘测设计研究院有限公司 Construction method of foundation pit ramp reinforced supporting structure under heavy-load passing condition
CN112796277A (en) * 2020-12-10 2021-05-14 中山大学 I-shaped steel pile-steel panel-high polymer composite layer soil retaining structure
CN117107784A (en) * 2023-10-23 2023-11-24 中铁第六勘察设计院集团有限公司 Cover-excavation reverse construction method adopting recyclable steel pipe pile
CN117107784B (en) * 2023-10-23 2024-02-06 中铁第六勘察设计院集团有限公司 Cover-excavation reverse construction method adopting recyclable steel pipe pile

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