CN202559384U - Prefabricated assembled pipe-jacking working well - Google Patents

Prefabricated assembled pipe-jacking working well Download PDF

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Publication number
CN202559384U
CN202559384U CN2012202048285U CN201220204828U CN202559384U CN 202559384 U CN202559384 U CN 202559384U CN 2012202048285 U CN2012202048285 U CN 2012202048285U CN 201220204828 U CN201220204828 U CN 201220204828U CN 202559384 U CN202559384 U CN 202559384U
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well
sheet
sections
vertical
font
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郭正兴
段凯元
刘家彬
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Southeast University
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Southeast University
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Abstract

The utility model discloses a bidirectional pre-stress type prefabricated assembled pipe-jacking working well used in pipe-jacking engineering. An open caisson is rectangular and is formed by splicing prefabricated well pieces of which the cross sections are U-shaped or transverse line-shaped; cantilever ends at two sides of the U-shaped well pieces are unequal in length; horizontal U-shaped well pieces are spliced dissymmetrically in accordance with the lengths of the cantilever ends at two sides; vertical adjacent U-shaped well pieces are spliced in a staggered manner in accordance with the sizes of the cantilever ends; the well pieces are connected through pre-stress reinforced steels in both the vertical direction and the horizontal direction; the vertical pre-stress reinforced steels are connected through connectors at structural transverse splicing seams; vertical pre-stress reinforced steels in edge foot section well pieces are subjected to bondless treatment; shearing key structures are arranged on prefabricated well piece cross sections at two sides of the transverse splicing seams; and in order to ensure the installation precision of the open caisson, a matching prefabricating method is adopted for the well pieces with the shear key structures. During the prefabrication, reinforced steel bars are inserted into pre-stress ducts. With the adoption of the structure, the efficiency on on-site casting of open caissons is improved greatly, the construction period in pipe-jacking is reduced, and the construction idea of low-carbon economy and green construction is met.

Description

A kind of prefabricated assembled upper pipe working well
Technical field
The utility model relates to a kind of open caisson active well that is applied to pipe-jacking project in the municipal underground pipeline project, specifically, is the prefabricated assembled upper pipe working well of a kind of two dimension prestressing.
Background technology
Pipe-jacking project is a kind of modern non-excavating construction method of burying underground utilities underground.Compare with corresponding fluting pipe laying construction method and shield construction, jacking construction has obvious superiority.This method need not excavated the ground notch, but must excavate several active wells at the two ends of laying underground pipeline.Active well can be divided into jacking active well and received well again.Wherein reinforced concrete circular or rectangle active well are comparatively common.The municipal network of underground improvement project of using the pipe-jacking project construction is positioned on the main line road of cities and towns mostly.Present concrete work open caisson generally adopts the job practices of on-the-spot assembling reinforcement, a template concreting.The active well site operation duration is longer, must pass through to the construction section traffic and cause bigger influence.And pollute peripheral environment, had a strong impact near resident normal life.
Summary of the invention
Technical problem:The purpose of the utility model provides a kind of prefabricated assembled upper pipe working well that can shorten the active well construction period at the scene.
Technical scheme:The prefabricated assembled upper pipe working well of the utility model is along vertically it is spliced by two well sheets more than the sections; Every sections is rectangular, and is made up of two relative U font well sheets and two relative yi word pattern well sheets, and the two ends of yi word pattern well sheet connect two U font well sheets respectively; U font well sheet is positioned at the minor face place of rectangle, and the both sides cantilever end length of each U font well sheet is unequal, and at the place, inboard right angle of U font well sheet haunch is set; Two U font well sheets of same sections are by the splicing of both sides cantilever end length antisymmetry, and the U font well sheet in vertical adjacent each sections is pressed cantilever end size dislocation splicing; The prestressed pore passage that all has along continuous straight runs and vertical direction to extend in U font well sheet and the yi word pattern well sheet; The transverse prestressed reinforcing steel bar that U font well sheet in the same sections and yi word pattern well sheet pass prestressed pore passage through horizontal direction connects; The horizontal edge joint position of vertical prestressed reinforcement between adjacent each sections that vertically passes prestressed pore passage connects through reinforcing bar connector.
Horizontal piece between adjacent each sections is provided with the shear connector structure.
U font well sheet and the yi word pattern well sheet of forming active well adopt the method for Matching Precast prefabricated, when prefabricated, insert the reinforcing bar plug that prevents the duct distortion in the prestressed pore passage.
Transverse prestressed reinforcing steel bar in the active well sidewall with vertical prestressed reinforcement be inside and outside two-layer distribution.
The well sheet of a nethermost sections is a sword pin section well sheet, and vertical prestressed reinforcement in the sword pin section well sheet and anchored end ground tackle are embedded in the sword pin section well sheet, and the vertical prestressed reinforcement in the sword pin section well sheet is made local prestressed failure section and handled.
The structure that the prestressed failure section is handled is the anticorrosion grease of vertical prestressed reinforcement surfaces coated in sword pin section well sheet, and parcel adhesive tape.
Each sections height 2m-3m, according to the open caisson height, the sections height-adjustable.
Beneficial effect:(1) municipal network of underground improvement project is positioned on the main line road of cities and towns mostly, and the upper pipe working well cast in situs duration is longer, to the bigger influence of the current generation of construction section traffic.Also give the road of periphery simultaneously
Net has increased bigger current pressure.Prestressed assembly precast concrete assembling active well can reduce the duration of open caisson built on-site significantly, significantly accelerates the construction speed of pipe-jacking project.Farthest reduced pipe-jacking project to construction section and the current influence of peripheral path traffic.
(2) prestressed assembly precast concrete assembling active well is through being prefabricated in the factory, and the active well contrast with cast-in-place has significantly reduced construction to the pollution of surrounding environment and the influence of resident's normal life.Meet " low-carbon economy, green construction " building theory.
(3) because whole well sheet is prefabricated in the factory, and the assembling active well needs artificial less at the construction field (site), meet the developing direction of country's " industrialization of construction industry ".
(4) confirm the rational arrangement of reinforcement scheme of prefabricated well sheet through structural analysis, prestressed assembly assembling active well satisfies the needs of pipe-jacking project fully on function, and its construction material expense is compared almost suitable with cast-in-place active well.
Description of drawings
Below in conjunction with accompanying drawing and embodiment is the tomograph of prefabricated assembled upper pipe working well to the utility model further explain: Fig. 1.
Fig. 2 is the sketch map of a sections.
Fig. 3 is prefabricated assembled upper pipe working well two dimension elevation.
Fig. 4 is the A-A sectional drawing of Fig. 3.
Fig. 5 is the B-B sectional drawing of Fig. 3.
Fig. 6 is a prestressed reinforcement exhaustion phase partial enlarged drawing.
Fig. 7 is that transverse joint place reinforcing bar connects sketch map.
Have among the figure: vertical prestressing reinforced bar stretching end 1; Haunch 2; U font well sheet (B prefabricated film) 3; Yi word pattern well sheet (A prefabricated film) 4; Vertical abutment joint 5; Transverse prestressed reinforcing steel bar stretch-draw end 6; Transverse joint 7; Hole 8; Shear connector structure 9; Prestressed pore passage 10; Vertical prestressing reinforcing bar 11; Transverse prestressed reinforcing steel bar 12; Steel failure section 13; Sword pin section well sheet 14; Active well base plate 15; Adhesive tape 16; Indented bars 17; Anchoring section ground tackle 18; Reinforcing bar connector 19; Bellows 20.
The specific embodiment
The prefabricated assembled upper pipe working well of the utility model, it is assembled by two well sheets more than the sections along vertical; Every sections is rectangular, and is made up of two relative U font well sheets and two yi word pattern well sheets; U font well sheet is positioned at the minor face place of rectangle; The both sides cantilever end length of U font well sheet is unequal; And the place, inboard right angle at U font well sheet is provided with haunch.
Above-mentioned active well, two U font well sheets of same sections are by the splicing of both sides cantilever end length antisymmetry, and the U font well sheet in vertical adjacent each sections is pressed cantilever end size dislocation splicing.After active well was spliced into overall structure, vertical piece was the dislocation piece.The prestressed pore passage that all has along continuous straight runs and vertical direction to extend in U font well sheet and the yi word pattern well sheet; The transverse prestressed reinforcing steel bar that U font well sheet in the same sections and yi word pattern well sheet pass prestressed pore passage through horizontal direction connects; The horizontal edge joint position of vertical prestressed reinforcement between adjacent each sections that vertically passes prestressed pore passage connects through reinforcing bar connector.
Above-mentioned active well, the horizontal edge joint position between adjacent each sections is provided with the shear connector structure.In order to ensure the precision of installing, the shear connector structure of each well sheet section of active well transverse joint place, the prefabricated section that respectively splices of method of employing Matching Precast.In prefabricated process, insert the reinforcing bar plug in (vertically) prestressed pore passage of each well sheet simultaneously, vertical prestressing reinforcing bar contraposition smoothly during with the assembly unit of assurance precast construction.
Above-mentioned active well, the transverse prestressed reinforcing steel bar in the active well sidewall is with vertically prestressed reinforcement is two-layer inside and outside being.Consider that in the pipe-jacking project work progress the inside and outside lateral body of rectangle active well sidewall reveals different stress forms.When configuration transverse prestressed reinforcing steel bar and vertical prestressing reinforcing bar, its installation position is along outside bidirectional arrangements in the sidewall.
Above-mentioned active well, the well sheet of a nethermost sections are sword pin section well sheet, and vertical prestressed reinforcement in the sword pin section well sheet and anchored end ground tackle are embedded in the sword pin section well sheet, and the vertical prestressed reinforcement in the sword pin section well sheet is handled as the prestressed failure section.The structure that the prestressed failure section is handled is the anticorrosion grease of vertical prestressed reinforcement surfaces coated in sword pin section well sheet, and parcel adhesive tape.
Above-mentioned active well, each sections height 2m-3m, the sections height can adjust according to the open caisson height.
Referring to Fig. 1, the utility model is prefabricated assembled rectangular top pipe active well.The active well edge is vertically to being divided into three sections, and every sections length is between 2m-3m.Each prefabricated well sheet vertical direction connects through vertical prestressing reinforcing bar 11.Each sections of horizontal direction is made up of 3 and two yi word pattern well sheets of two U font well sheets (B prefabricated film) (A prefabricated film) 4.Wherein U font well sheet 3 adopts haunch 2 structures.Each well sheet of each sections connects through transverse prestressed reinforcing steel bar 12.Vertical prestressing reinforcing bar and transverse prestressed reinforcing steel bar are all counted the employing finish rolling deformed bar.U font well sheet (short side direction) is a push pipe jacking direction.
The cantilever end of U font well sheet both sides is designed to different size (the cantilever end length of both sides is unequal); Both sides U font well sheet cantilever end on same sections antisymmetry is each other arranged (the long cantilever end of a U font well sheet splices with the short cantilever end of another U font well sheet mutually); (neighbouring two (U font well sheet) one of cantilever end are short cantilever ends, and one is the long cantilever end) arranged in vertical U font well sheet cantilever end size dislocation of adjacent open caisson sections.After active well was spliced into integral body, the vertical abutment joint 5 of U font well sheet and yi word pattern well sheet was the dislocation splicing.
Precast construction vertically goes up through vertical prestressing reinforcing bar 11 and connects, and prestressed reinforcement adopts single-ended stretch-draw, and the stretch-draw end is located at the active well topmost.The vertical prestressing reinforcing bar of same position connects through existing reinforcing bar connector 19 at transverse joint 7 places in each well sheet.The prefabricated well sheet of each of same sections is connected to integral body through transverse prestress 12 reinforcing bars that are parallel to a word slice.The prefabricated well sheet section part of transverse joint both sides is provided with shear connector structure (joint of neighbouring two prefabricated well sheets, a prefabricated well sheet has jut, another has corresponding recess) 9.The prestressed reinforcement duct of passing the vertical prestressing reinforcing bar is distributed in shear connector structure both sides.When the well sheet is prefabricated, adopt the Matching Precast method, and in prestressed pore passage, insert reinforcing bar and carry out prefabricatedly, guarantee each prefabricated well sheet duct alignment, the teeth groove interlock is tight.
The U font well sheet of the vertical interstitial segment of active well is reserved push pipe hole 8 at design height, the pre-buried structure steel plate of hole week sheet.Vertical prestressed reinforcement and anchoring section ground tackle 18 in the sword pin section well sheet (the well sheet of a nethermost sections) 14 in the prefabricated active well are embedded in the prefabricated well sheet.Pre-buried prestressed reinforcement has adopted local no binder-treatment, promptly at rebar surface preservation fat, and parcel adhesive tape 16, form prestressing force partial failure section 13, see accompanying drawing 3,6.
The B prefabricated film of one side is installed earlier during the mounting shaft sheet, after fill in both sides A prefabricated film from the side, at last with opposite side B prefabricated film installation in position.Be to guarantee the stability of erection stage A prefabricated film, can be at A prefabricated film, B prefabricated film seam crossing outside pre-embedded steel slab, treat that the A prefabricated film is in place after, weld A prefabricated film, B prefabricated film seam crossing steel plate fixing.
For shortening the Cast-in-situs type active well construction period at the scene; Minimizing is to the pollution of site environment and the influence that traffic, human settlement are caused; Adapt to the development of " industrialization of construction industry ", the utility model is divided into plurality of sections with being divided into polylith on the rectangle active well plane on the facade.Active well well sheet piecemeal is prefabricated in the factory, be transported to the scene after, with the prestressed reinforcement of left and right sides interblock vertical direction and horizontal direction horizontal piece and vertical piece being applied prestressing force makes it to be assembled into integral body up and down through penetrating, it is in place to sink at last.
Prestressing force assembling rectangle active well is divided into some sections along vertical (highly) direction, and every segment length is about 2m, and each well sheet vertically connects through the prestressed reinforcement in the reserving hole channel in the well sheet.The length of each prestressed reinforcement is consistent along vertical height with each well sheet.Vertical each section prestressed reinforcement of same position is along vertically being fused by connector at the transverse joint place of structure.Consider transportation and the convenience that lifts, level is divided into four to every sections active well, and section is U font and yi word pattern respectively.The cantilever end of U font well sheet both sides is not isometric design, vertically presses outrigger base length dislocation splicing.Each sections connects through the transverse prestressed reinforcing steel bar that is parallel to yi word pattern well sheet.In conjunction with the loading characteristic and the easy construction of pipe-jacking project active well, adopt finish rolling deformed bar as prestressed reinforcement.

Claims (7)

1. a prefabricated assembled upper pipe working well is characterized in that: along vertically it is spliced by two well sheets more than the sections; Every sections is rectangular, and is made up of two relative U font well sheets (3) and two relative yi word pattern well sheets (4), and the two ends of yi word pattern well sheet (4) connect two U font well sheets (3) respectively; U font well sheet (3) is positioned at the minor face place of rectangle, and the both sides cantilever end length of each U font well sheet (3) is unequal, and at the place, inboard right angle of U font well sheet (3) haunch (2) is set; Two U font well sheets of same sections are by the splicing of both sides cantilever end length antisymmetry, and the U font well sheet in vertical adjacent each sections is pressed cantilever end size dislocation splicing; The prestressed pore passage (10) that all has along continuous straight runs and vertical direction to extend in U font well sheet and the yi word pattern well sheet; The transverse prestressed reinforcing steel bar (12) that U font well sheet in the same sections and yi word pattern well sheet pass prestressed pore passage through horizontal direction connects; Vertically passing the horizontal piece (7) of vertical prestressed reinforcement between adjacent each sections of prestressed pore passage locates to connect through reinforcing bar connector (19).
2. prefabricated assembled upper pipe working well as claimed in claim 1 is characterized in that: the horizontal piece (7) between adjacent each sections is provided with shear connector structure (9).
3. prefabricated assembled upper pipe working well as claimed in claim 1 is characterized in that: U font well sheet and the yi word pattern well sheet of forming active well adopt the method for Matching Precast prefabricated, when prefabricated, insert the reinforcing bar plug in the prestressed pore passage (10).
4. prefabricated assembled upper pipe working well as claimed in claim 1 is characterized in that: the transverse prestressed reinforcing steel bar in the active well sidewall with vertical prestressed reinforcement be inside and outside two-layer distribution.
5. prefabricated assembled upper pipe working well as claimed in claim 1; It is characterized in that: the well sheet of a nethermost sections is a sword pin section well sheet; Vertical prestressed reinforcement in the sword pin section well sheet and anchored end ground tackle are embedded in the sword pin section well sheet, and the vertical prestressed reinforcement in the sword pin section well sheet is handled as the prestressed failure section.
6. prefabricated assembled upper pipe working well as claimed in claim 5 is characterized in that: the structure that the prestressed failure section is handled is the anticorrosion grease of vertical prestressed reinforcement surfaces coated in sword pin section well sheet, and parcel adhesive tape.
7. prefabricated assembled upper pipe working well as claimed in claim 1 is characterized in that: each sections height 2m-3m, and according to the open caisson height, the sections height-adjustable.
CN2012202048285U 2012-05-09 2012-05-09 Prefabricated assembled pipe-jacking working well Active CN202559384U (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102644296A (en) * 2012-05-09 2012-08-22 东南大学 Prefabricate assembly type pipe jacking working well
CN103726497A (en) * 2014-01-10 2014-04-16 中国地质大学(北京) Pipe-jacking working well mouth reinforcing device
CN104963360A (en) * 2015-06-11 2015-10-07 芜湖鸣人热能设备有限公司 Construction technology facilitating underground storage of cables
CN105386506A (en) * 2015-12-19 2016-03-09 徐水县华光市政建材有限公司 Inspection well
CN108643212A (en) * 2018-05-16 2018-10-12 江苏南通二建集团有限公司 A kind of prefabricated reinforced concrete open caisson construction method
CN111206618A (en) * 2019-12-28 2020-05-29 广州市市政集团有限公司 Prefabricated rectangular jacking pipe and construction method thereof
CN111764421A (en) * 2020-06-30 2020-10-13 中国二十二冶集团有限公司 Construction method of assembled open caisson method of cyclone well

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102644296A (en) * 2012-05-09 2012-08-22 东南大学 Prefabricate assembly type pipe jacking working well
CN103726497A (en) * 2014-01-10 2014-04-16 中国地质大学(北京) Pipe-jacking working well mouth reinforcing device
CN103726497B (en) * 2014-01-10 2016-06-22 中国地质大学(北京) Upper pipe working well reinforcing device
CN104963360A (en) * 2015-06-11 2015-10-07 芜湖鸣人热能设备有限公司 Construction technology facilitating underground storage of cables
CN105386506A (en) * 2015-12-19 2016-03-09 徐水县华光市政建材有限公司 Inspection well
CN108643212A (en) * 2018-05-16 2018-10-12 江苏南通二建集团有限公司 A kind of prefabricated reinforced concrete open caisson construction method
CN111206618A (en) * 2019-12-28 2020-05-29 广州市市政集团有限公司 Prefabricated rectangular jacking pipe and construction method thereof
CN111764421A (en) * 2020-06-30 2020-10-13 中国二十二冶集团有限公司 Construction method of assembled open caisson method of cyclone well

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