CN105648992A - Concrete construction method for upper bending segment of shaft - Google Patents
Concrete construction method for upper bending segment of shaft Download PDFInfo
- Publication number
- CN105648992A CN105648992A CN201610033972.XA CN201610033972A CN105648992A CN 105648992 A CN105648992 A CN 105648992A CN 201610033972 A CN201610033972 A CN 201610033972A CN 105648992 A CN105648992 A CN 105648992A
- Authority
- CN
- China
- Prior art keywords
- construction
- skylight
- curved section
- upper curved
- vertical shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a concrete construction method for an upper bending segment of a shaft. The concrete construction method comprises the following steps of calculating a construction load-bearing platform; after the construction of a straight segment of the shaft is finished, arranging the construction load-bearing platform at the boundary of the upper bending segment and the straight segment of the shaft; performing concrete lining of the upper bending segment of the shaft and backfilling construction lateral tunnels; during the construction of the upper bending segment, reserving a skylight of the upper bending segment, enabling a door frame of the skylight to extend the well wall of the construction lateral tunnel to form a courtyard to be used as a construction passage, and backfilling two sides of the courtyard to form a construction platform; and plugging the skylight and the courtyard to complete the construction of the upper bending segment. According to the concrete construction method disclosed by the invention, the problem of the construction passage is solved for the construction of the upper bending segment of the shaft, construction staff directly enter the upper bending segment from the skylight for construction, construction materials are enabled to directly enter the upper bending segment from the skylight for construction, the difficult problem caused by the situation that the construction staff enter the upper bending segment from a vent hole in a gate well for construction and the construction materials are enabled to enter the upper bending segment from the vent hole in the gate well for construction are solved, and the construction technique of the upper bending segment of the shaft is improved.
Description
Technical field
The present invention relates to water conservancy and hydropower building concrete construction method, be specifically related to a kind of vertical shaft upper curved section concrete construction method.
Background technology
Water power, as the most ripe regenerative resource of development technique, possesses technology and the market condition of large-scale development; The distribution of China hydroelectric resources presents a prominent feature, it is simply that " east " to lack " west " many generally; Eastern region hydraulic power potentials amount only accounts for the 7% of the whole nation, and west area accounts for more than 75%, and western part is mainly enriched in again the province, city and region such as Qinghai-Tibet Platean and the Yunnan of sub-region, Sichuan, Guizhou, Guangxi, Tibet, Qinghai and Gansu; Being retrained by landform and water project situation, a lot of hydroelectric project development schemes in development of the West Regions are water channeling type, and wherein certainly existing a large amount of diversion work shaft to build; Additionally in, eastern region, for frequency modulation, phase modulation, the cycle of stable power system and voltage, and emergency lamp purpose, also will build substantial amounts of hydroenergy storage station; During hydroenergy storage station is arranged, contacting the important component part of water channel as upper and lower storehouse, high pressure vertical shaft is also generally requisite building, and along with the increase of rated head, vertical shaft diameter also foot strengthens; And vertical shaft is necessarily required to curved segment and is connected with adit, thus there is the lining construction problem of curved segment; For upper curved section, due to the particularity of curved segment, when upper channel is limited, for instance in hydroenergy storage station after reservoir filling, the transport of upper curved section construction material, the current etc. of workmen all become a difficult problem.
Summary of the invention
The present invention provides a kind of vertical shaft upper curved section concrete construction method.
The technical solution used in the present invention is: a kind of vertical shaft upper curved section concrete construction method, comprises the following steps:
The construction of vertical shaft straight section arranges construction bearing platform at upper curved section and vertical shaft straight section intersection after terminating;
Carry out concrete lining and the backfill working tunnel of vertical shaft upper curved section;
In the reserved skylight of upper curved section during upper curved section construction, skylight doorframe extends to the working tunnel borehole wall and forms courtyard as construction passage, and the backfill of courtyard both sides forms operation platform;
Closure skylight, courtyard complete upper curved section construction.
Further, described construction bearing platform is i-beam structure; It is divided into upper and lower two-layer, arranges in " well " font; Lower floor's I-steel Parallel to the flow direction is arranged; After construction bearing platform I-steel has been laid, by lower floor's I-steel top flange plate and upper strata I-steel flange plate firm welding, fix rear upper strata I-steel and laid steel plate, between steel plate, carried out joint seal.
Further, described construction bearing platform is provided with weight induction device; Being additionally provided with vent on construction bearing platform, vent is fixed towards shaft wall and I-steel.
Further, first described construction bearing platform is calculated before arranging, and computational methods are as follows: be calculated initially with structural mechanics, then adopts the load that structural mechanics obtains, is verified by FEM (finite element) model, it is determined that rated weight; Described construction bearing platform arranges alarm, when weight sensor video data exceedes the 80% of rated weight, sends warning; Weight sensor is arranged on the I-steel that upper strata span is maximum.
Further, described construction bearing platform carries out reinforcing bar binding after having constructed, and adopts bow member and punching block to carry out formwork and build; During formwork, every reinforcing bar enters and adopts template isolation within the scope of xoncrete structure contour line 5cm.
Further, described upper curved section concrete lining is divided into 4 storehouses to carry out from vertical shaft straight section upwards curved segment direction, respectively B, C, D, A; A storehouse adopts bow member and steel form to carry out formwork and build; B storehouse includes two parts, and Part I is built for fixing I-steel platform; Part II carries out with working tunnel backfill for building simultaneously; C storehouse is the construction of reserved skylight, skylight end opening is arranged at one piece of template place above the concrete surface of B storehouse, after the doorframe firm position of reserved skylight, carries out reserved skylight doorframe outboard template and installs, upper curved section model sheetinstallat is close to by skylight doorframe, and the straight working tunnel that extends to forms courtyard; Courtyard both sides in working tunnel form operation platform; D storehouse is vertical shaft upper curved section concrete pouring construction.
Further, described skylight is divided into doorframe and cover plate, and doorframe by measurement and positioning when C storehouse is built, utilizes dowel hook to be fixed on the reinforcing bar of C storehouse, when building, 15cm width steel plate outside doorframe ribbed stiffener poured into concrete; First skylight doorframe is hung in construction working face, then pass through surveying setting-out and release doorframe position; Dowel hook is utilized to be fixed on the reinforcing bar of relevant position; Withstand in doorframe position template simultaneously, built rear form removal and formed reserving hole.
Further, in work progress, concrete discharging mode adopts elephant trunk to coordinate chute construction, at construction passage place, elephant trunk is set, building first half concrete in elephant trunk place erection construction platform of blanking backbreaks district's entrance vertical shaft upper curved section by the technology of vertical shaft upper curved section Yu working tunnel top intersection, bottom concrete adopts chute from entrance lower half, both sides.
Further, described construction bearing platform being provided with 4 vents, vent is towards shaft wall.
Further, described skylight method for blocking is as follows:
By FEM calculation, steel plate is checked;
Check qualified Plate Welding on the doorframe of skylight, between steel plate and steel plate, carry out full weld;
Every block plate arranges twice ribbed stiffener;
Preservative treatment is carried out at steel plate upstream face before closing;
Polish after completing, weld closely knit;
Carry out skylight backfill.
The invention has the beneficial effects as follows:
(1) present invention is the problem that perpendicular upper curved section construction solves construction passage, and workmen, material are directly entered upper curved section from skylight and construct;
(2) instant invention overcomes conventional construction method and enter the problem of upper curved section construction from gate shaft passage, construction safety risk is little, the duration shortens, difficulty of construction reduces.
Accompanying drawing explanation
Fig. 1 is schematic flow sheet of the present invention.
Fig. 2 is vertical shaft upper curved section concrete discharging system layout in embodiment.
Fig. 3 is vertical shaft upper curved section lining cutting system figure.
In figure: 1-constructs bearing platform, 2-vertical shaft straight section, 3-working tunnel, 4-skylight, 5-vertical shaft upper curved section, 6-operation platform, 7-emission of baiting chute, 8-scaffold.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
A kind of vertical shaft upper curved section concrete construction method, comprises the following steps:
The construction of vertical shaft straight section arranges construction bearing platform at upper curved section and vertical shaft straight section intersection after terminating;
Carry out concrete lining and the backfill working tunnel of vertical shaft upper curved section;
In the reserved skylight of upper curved section during upper curved section construction, skylight doorframe extends to the working tunnel borehole wall and forms courtyard as construction passage, and the backfill of courtyard both sides forms operation platform;
Closure skylight, courtyard complete upper curved section construction.
The present invention is applicable for use with being vertically arranged the vertical shaft upper curved section concrete construction of working tunnel, is particularly suited for owing to adit or water inlet are occupied, or reservoir filling makes the curved segment concrete pouring construction that passage is limited; Make full use of a vertical hole as construction passage, after curved segment has been built, block skylight, courtyard, complete upper curved section construction of concrete lining.
Further, described construction bearing platform is i-beam structure; Described construction bearing platform is i-beam structure; It is divided into upper and lower two-layer, arranges in " well " font; Lower floor's I-steel Parallel to the flow direction is arranged; After construction bearing platform I-steel has been laid, by lower floor's I-steel top flange plate and upper strata I-steel flange plate firm welding, fix rear upper strata I-steel and laid steel plate, between steel plate, carried out joint seal.
Further, described construction bearing platform is provided with weight induction device; Weight induction device is set and can monitor platform vision condition in concrete construction, it is ensured that the safety of construction bearing platform; Being additionally provided with vent on construction bearing platform, vent is fixed towards shaft wall and I-steel.
Further, described construction bearing platform is calculated initially with structural mechanics before arranging, and then adopts the load that structural mechanics obtains, is verified by FEM (finite element) model, it is determined that rated weight; Described construction bearing platform arranges alarm, when weight sensor video data exceedes the 80% of rated weight, sends warning; Weight sensor is arranged on the I-steel that upper strata span is maximum; The process that employing structural mechanics is calculated carries out a lot of simplification, it is possible to cause relatively larger error, therefore adopted the load that structural mechanics obtains, adopt FEM (finite element) model to verify.
Further, described construction bearing platform carries out reinforcing bar binding after having constructed, and adopts bow member and punching block to carry out formwork and build; During formwork, every reinforcing bar enters and adopts template isolation within the scope of xoncrete structure contour line 5cm; Construction bearing platform carries out reinforcing bar binding after having constructed in time, and by the impact of I-steel platform, circumferential reinforcement needs disconnection to be welded on I-steel, and longitudinal reinforcement local needs to be adjusted; After reinforcing bar binding is complete, adopting bow member and steel form to carry out formwork and build, building height suitably can adjust according to practical situation; Must ensure during formwork that every I-steel enters and within the scope of xoncrete structure contour line 5cm, adopt plank isolation, in order to I-steel is directly cut off when removing by later stage I-steel, and epoxy resin mortar blocks;Set up needs due to I-steel platform, according to practical situation, local structure reinforcing bars will be adjusted; The Zhi Li of template, Copper water stop are installed, the welding of grounding flat steel is identical with conventional construction method.
Further, described upper curved section concrete lining is divided into 4 storehouses to carry out from vertical shaft straight section upwards curved segment direction, respectively B, C, D, A; A storehouse adopts bow member and steel form to carry out formwork and build; B storehouse includes two parts, and Part I is built for fixing I-steel platform, and concrete construction method refers to I-steel platform construction scheme; Part II carries out with working tunnel backfill for building simultaneously; C storehouse is the construction of reserved skylight, and skylight end opening is arranged at one piece of template place above the concrete surface of B storehouse, after the doorframe firm position of reserved skylight, carries out reserved skylight doorframe outboard template and installs, and outboard template is divided into two side templates and top, skylight template three; Upper curved section model sheetinstallat is close to by skylight doorframe, it is prevented that spillage during concreting; The straight working tunnel that extends to forms courtyard; Courtyard both sides in working tunnel form operation platform; D storehouse is vertical shaft upper curved section concrete pouring construction.
When vertical shaft concrete lining, reserved 1m not lining cutting is used for later stage fixed platform I-steel, after vertical shaft straight section consolidation grouting terminates, sets up I-steel at Shaft bank and spreads steel plate, utilizes wooden model version and steel form combination casting concrete to suitably highly; The mode setting up full hall scaffold and self-control truss support typified form on construction bearing platform basis builds upper curved section B-D storehouse concrete, builds B storehouse concrete and backfills working tunnel simultaneously; Reserving skylight when building C storehouse concrete at top, and form reserved courtyard at the back side, skylight as construction passage, courtyard both sides carry out backfill and form operation platform; Utilize the operation platform that C storehouse concreting is formed to place concrete pump when building D storehouse concrete and carry out the concreting of D storehouse, finally block skylight, courtyard completes upper curved section construction of concrete lining.
Further, described skylight is divided into doorframe and cover plate, and doorframe by measurement and positioning when C storehouse is built, utilizes dowel hook to be fixed on the reinforcing bar of C storehouse, when building, 15cm width steel plate outside doorframe ribbed stiffener poured into concrete; First skylight doorframe is hung in construction working face, then pass through surveying setting-out and release doorframe position; Dowel hook is utilized to be fixed on the reinforcing bar of relevant position; Withstand in doorframe position template simultaneously, built rear form removal and formed reserving hole.
Further, in work progress, concrete discharging mode adopts elephant trunk to coordinate chute construction, at construction passage place, elephant trunk is set, building first half concrete in elephant trunk place erection construction platform of blanking backbreaks district's entrance vertical shaft upper curved section by the technology of vertical shaft upper curved section Yu working tunnel top intersection, bottom concrete adopts chute from entrance lower half, both sides; The concreting of D storehouse arranges that on the operation platform that blanking chute tube side is formed concrete don't be managed, and is entered in D storehouse built by vertical shaft upper curved section technology district of backbreaking, don't install bend pipe in pipe top, and both sides utilize string bucket to deliver to the uniform blanking of two bottom sides of D storehouse; Build successively to top from bottom, don't nuzzle in storehouse by pipe simultaneously, lay exhaustor at storehouse inner top, observing tube extends to outside storehouse.
Further, described construction bearing platform being provided with 4 vents, vent is towards shaft wall.
Further, described skylight method for blocking is as follows:
By FEM calculation, steel plate is checked;
Check qualified Plate Welding on the doorframe of skylight, between steel plate and steel plate, carry out full weld;
Every block plate arranges twice ribbed stiffener;
Preservative treatment is carried out at steel plate upstream face before closing;
Polish after completing, weld closely knit;
Carry out skylight backfill.
The present invention makes full use of vertical shaft and props up hole as construction passage, reserved skylight in curved segment casting process, and forms reserved courtyard at the back side, skylight as construction passage, and curved segment concreting blocks skylight after completing, courtyard completes upper curved section lining construction; Below for specific embodiment, the present invention will be further described.
Fig. 2 is storage station's diversion vertical shaft upper curved section concrete discharging system layout; During vertical shaft concrete lining, reserved 1m not lining cutting is for later stage fixed platform I-steel, after vertical shaft straight section 2 consolidation grouting terminates, set up I-steel at Shaft bank, I-steel is laid steel plate, then utilize wooden model version and steel form combination casting concrete 6m to form construction bearing platform 1; The basis of construction bearing platform 1 is set up full hall scaffold and builds upper curved section B-D storehouse concrete with the mode making frame supporting and shaping template of spreading out by oneself; Build B storehouse concrete and backfill working tunnel 3 simultaneously, reserve extent of horizontal projection �� wide=2.175 �� 3.5m skylight 4 at top when building C storehouse concrete, and form reserved courtyard at the back side, skylight 4 as construction passage, courtyard both sides carry out backfill and form operation platform 6, utilize the operation platform 6 that the concreting of C storehouse is formed to place concrete pump and carry out D concreting when building D storehouse concrete; Finally closure skylight 4, courtyard complete upper curved section construction of concrete lining.
The complexity etc. that the load that is subjected to according to diversion vertical shaft straight section 2 physical dimension, upper curved section 5 concreting, subsequent construction bearing platform 1 are removed; Construction bearing platform 1 is designed as steel structural form; Construction bearing platform 1 adopts I36a I-steel to set up, and is divided into upper and lower two-layer, in " well " font; Lower floor's I-steel Parallel to the flow direction is set up, upper strata I-steel is perpendicular to bottom I-steel, laying I-steel spacing 80 �� 80cm, each intersection point of two-layer I-steel adopts Plate Welding to fix, and then thick for top layer I-steel upper berth 5mm steel plate is closed and formed closure construction bearing platform 1; For ensureing lower horizontal section and middle adit construction ventilation, construction bearing platform 1 arranges 4 vents; Wherein vent is 90 �� of steel elbows, and diameter is 30cm, is configured on demand; Vent, towards shaft wall, firmly welds with platform steel plate, to ventilation mask steel wire, it is prevented that foreign material fall into; Construction bearing platform 1 arranges the weight induction device 4 of 5t, during construction, is set to the 80%(4t of rated weight), report to the police immediately during more than 4t; Induction apparatus is located on the I-steel that upper strata span is maximum, can monitor platform force-bearing situation in concrete construction, it is ensured that platform safety.
Analyzing B storehouse and build situation, when B builds in storehouse, scaffold rises, and weight is all undertaken by construction bearing platform 1, and after rising to certain altitude, working tunnel 3 starts fill concrete, and the moiety by weight of scaffold also begins to be undertaken by surrounding rock body simultaneously; When rising to the height of needs, fill concrete arrives the bottom in reserved skylight 4, and scaffold rises to the top in B storehouse, and load reaches maximum; When the lining cutting of B storehouse completes, scaffold continues up to be set up, and most of weight of scaffold begins to transfer on rock mass, and owing to the existence in skylight 4 is without continuing fill concrete, and original fill concrete has combined with rock mass and no longer acted on scaffold; When lining cutting continues up, main load-carrying construction has had changed into rock mass and fill concrete platform, i.e. operation platform 6, and construction bearing platform 1 stress is greatly reduced;Through above-mentioned analysis it can be seen that when the construction the most dangerous B of the being disclosed as storehouse lining cutting of bearing platform 1 and working tunnel 3 are just poured into bottom reserved skylight 4.
Owing to scaffold vertical only transmits vertical power to steel pipe, so it is believed that every vertical scaffolding steel pipe only transmits within the scope of its center half pitch the load in an i.e. square area centered by it in the horizontal plane, then acting on the steel plate of construction bearing platform 1 with the form of concentration power; Construction bearing platform 1 can be reduced to contignation, steel plate takes its dangerouse cross-section and is reduced to the calculating of multispan beam, upper strata I-steel takes maximum one of load and is reduced to multispan beam and calculates, and lower floor's I-steel takes the longest one of span and is reduced to simply supported beam and is calculated; Steel plate and upper strata I-steel are checked its maximum shear stress and maximal bending moment whether to reach steel and are born the limit, and lower floor's I-steel need to check its intensity simultaneously and whether deformation is above standard.
In structural mechanics algorithm, construction bearing platform 1 can do a lot of simplification, it is possible to causes bigger error, thus is considered as structural mechanics and obtains and load, is added in the FEM (finite element) model of construction bearing platform 1 and is calculated, checks the result of calculation of structural mechanics; Construction bearing platform 1, superstructure and surrounding rock body are divided into three part modelings, entirety is analyzed after being accompanied by suitable parameter by each several part, and assume that rock mass, xoncrete structure and scaffold are not deformed, namely finally obtain the construction bearing platform 1 stress under superstructure action of gravity and deformation result.
The concrete lining of upper curved section B-D storehouse adopts full hall scaffold and makes the form of construction work of frame supporting and shaping template of spreading out by oneself, and wherein B storehouse is built and is divided into two parts, and Part I is built for fixing I-steel platform; It is 11.5m that Part II builds position in storehouse length, backfills with working tunnel 3 and carry out simultaneously in casting process; Reserve the skylight 4 of extent of horizontal projection �� wide=2.175 �� 3.5m at top when building C storehouse concrete, skylight 4 end opening is positioned at the At The Height of one piece of template above the B storehouse concrete surface built, after the doorframe fixation of skylight 4, carry out skylight 4 doorframe outboard template and install; Outboard template is divided into two side templates and top, skylight 4 template three; Upper curved section model sheetinstallat is close to by skylight 4 doorframe, it is prevented that spillage during concreting; Then courtyard is reserved in the straight formation on working tunnel 3 borehole wall that extends to, with reserved skylight 4 together as passage use of constructing; The backfill of courtyard both sides and the concreting of C storehouse carry out simultaneously, and the courtyard both sides in working tunnel 3 form operation platform 6; Concrete discharging mode adopts elephant trunk to coordinate chute Planning Materials of Constrution, building first half concrete in elephant trunk 7 place erection construction platform of blanking backbreaks district's entrance vertical shaft upper curved section by the technology of vertical shaft upper curved section 5 with working tunnel 3 top intersection, bottom concrete adopts chute from entrance bottom, both sides; The concreting of D storehouse arrange on the operation platform that emission of baiting chute 7 side is formed concrete pump pipe by vertical shaft upper curved section technology backbreak district enter D storehouse build; Don't installing bend pipe in pipe top, both sides utilize to gang up delivers to the uniform blanking of two bottom sides of D storehouse; Build successively from bottom to top, don't nuzzle in storehouse by pipe simultaneously; Lay exhaustor at storehouse inner top, observing tube extends to outside storehouse.
The design in skylight 4 considers that the requirements such as the load, subsequent construction bearing platform 1 and the template scaffold support system dismounting that are subjected to built by working tunnel 3 fill concrete, and skylight 4 is designed as steel structural form;Skylight is divided into pre-buried doorframe and cover plate, its cover plate is divided into 6 piece of I type cover plate and two kinds of forms of 1 piece of II type cover plate, reserved doorframe by measurement and positioning when C storehouse is built, utilizes dowel hook to be fixed on the reinforcing bar of C storehouse, when building, 15cm width steel plate outside doorframe ribbed stiffener is poured into concrete; First doorframe is hung in construction working face by well head straddle truck by reserved skylight doorframe smoothly during the reinforcing bar binding of C storehouse, then pass through surveying setting-out and release doorframe position; Utilize dowel hook to be fixed on the reinforcing bar of relevant position, withstand in doorframe position template simultaneously, built rear form removal and formed reserving hole; Upper curved section carries out the closure of reserved skylight after having constructed; Skylight blocks by being connected on doorframe by 7 pieces of prefabricated manganese steel bridge weldings, and carries out full weld between cover plate and cover plate; Skylight closure adopts 12mm thickness manganese steel plate to close, and totally 8 pieces, is divided into I, II type cover plate, wherein I type length �� wide=2.175 �� 1m, II type length �� wide=2.175 �� 0.638m; Set up twice ribbed stiffener at every block plate, just close with doorframe after cover plate is buckled, close front spring upstream face and carry out preservative treatment; Cut is adopted to weld between cover plate with cover plate, door and window, after completing and polish, it is necessary to weld closely knit; Carrying out the backfill of the back side, skylight 4 after having welded, concrete material wants symmetrical, uniform, strictly to control concreting speed simultaneously, and thin layer slowly rises, and is controlled by 30cm/h.
The concrete construction method carrying out vertical shaft upper curved section based on reserved skylight provided by the invention, it is particularly suitable for use with the vertical shaft upper curved section concrete construction being vertically arranged working tunnel, it is particularly suited for owing to adit or water inlet are occupied, or reservoir filling makes the curved segment concrete pouring construction that passage is limited.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (10)
1. a vertical shaft upper curved section concrete construction method, it is characterised in that comprise the following steps:
The construction of vertical shaft straight section arranges construction bearing platform at upper curved section and vertical shaft straight section intersection after terminating;
Carry out concrete lining and the backfill working tunnel of vertical shaft upper curved section;
In the reserved skylight of upper curved section during upper curved section construction, skylight doorframe extends to the working tunnel borehole wall and forms courtyard as construction passage, and the backfill of courtyard both sides forms operation platform;
Closure skylight, courtyard complete upper curved section construction.
2. a kind of vertical shaft upper curved section concrete construction method according to claim 1, it is characterised in that described construction bearing platform is i-beam structure; It is divided into upper and lower two-layer, arranges in " well " font; Lower floor's I-steel Parallel to the flow direction is arranged; After construction bearing platform I-steel has been laid, by lower floor's I-steel top flange plate and upper strata I-steel flange plate firm welding, fix rear upper strata I-steel and laid steel plate, between steel plate, carried out joint seal.
3. vertical shaft upper curved section concrete construction method according to claim 2, it is characterised in that be provided with weight induction device on described construction bearing platform; Being additionally provided with vent on construction bearing platform, vent is fixed towards shaft wall and I-steel.
4. a kind of vertical shaft upper curved section concrete construction method according to claim 3, it is characterized in that, first described construction bearing platform is calculated before arranging, computational methods are as follows: be calculated initially with structural mechanics, then the load that structural mechanics obtains is adopted, verified by FEM (finite element) model, it is determined that rated weight; Described construction bearing platform arranges alarm, when weight sensor video data exceedes the 80% of rated weight, sends warning;Weight sensor is arranged on the I-steel that upper strata span is maximum.
5. a kind of vertical shaft upper curved section concrete construction method according to claim 2, it is characterised in that described construction bearing platform carries out reinforcing bar binding after having constructed, adopt bow member and punching block to carry out formwork and build; During formwork, every reinforcing bar enters and adopts template isolation within the scope of xoncrete structure contour line 5cm.
6. a kind of vertical shaft upper curved section concrete construction method according to claim 2, it is characterised in that described upper curved section concrete lining is divided into 4 storehouses to carry out from vertical shaft straight section upwards curved segment direction, respectively B, C, D, A; A storehouse adopts bow member and steel form to carry out formwork and build; B storehouse includes two parts, and Part I is built for fixing I-steel platform; Part II carries out with working tunnel backfill for building simultaneously; C storehouse is the construction of reserved skylight, skylight end opening is arranged at one piece of template place above the concrete surface of B storehouse, after the doorframe firm position of reserved skylight, carries out reserved skylight doorframe outboard template and installs, upper curved section model sheetinstallat is close to by skylight doorframe, and the straight working tunnel that extends to forms courtyard; Courtyard both sides in working tunnel form operation platform; D storehouse is vertical shaft upper curved section concrete pouring construction.
7. a kind of vertical shaft upper curved section concrete construction method according to claim 6, it is characterized in that, described skylight is divided into doorframe and cover plate, doorframe passes through measurement and positioning when C storehouse is built, utilize dowel hook to be fixed on the reinforcing bar of C storehouse, when building, 15cm width steel plate outside doorframe ribbed stiffener is poured into concrete; First skylight doorframe is hung in construction working face, then pass through surveying setting-out and release doorframe position; Dowel hook is utilized to be fixed on the reinforcing bar of relevant position; Withstand in doorframe position template simultaneously, built rear form removal and formed reserving hole.
8. a kind of vertical shaft upper curved section concrete construction method according to claim 1, it is characterized in that, in work progress, concrete discharging mode adopts elephant trunk to coordinate chute construction, at construction passage place, elephant trunk is set, building first half concrete in elephant trunk place erection construction platform of blanking backbreaks district's entrance vertical shaft upper curved section by the technology of vertical shaft upper curved section Yu working tunnel top intersection, bottom concrete adopts chute from entrance lower half, both sides.
9. a kind of vertical shaft upper curved section concrete construction method according to claim 1, it is characterised in that be provided with 4 vents on described construction bearing platform, vent is towards shaft wall.
10. a kind of vertical shaft upper curved section concrete construction method according to claim 1, it is characterised in that described skylight method for blocking is as follows:
By FEM calculation, steel plate is checked;
Check qualified Plate Welding on the doorframe of skylight, between steel plate and steel plate, carry out full weld;
Every block plate arranges twice ribbed stiffener;
Preservative treatment is carried out at steel plate upstream face before closing;
Polish after completing, weld closely knit;
Carry out skylight backfill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610033972.XA CN105648992B (en) | 2016-01-19 | 2016-01-19 | A kind of vertical shaft upper curved section concrete construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610033972.XA CN105648992B (en) | 2016-01-19 | 2016-01-19 | A kind of vertical shaft upper curved section concrete construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105648992A true CN105648992A (en) | 2016-06-08 |
| CN105648992B CN105648992B (en) | 2017-08-25 |
Family
ID=56484163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610033972.XA Active CN105648992B (en) | 2016-01-19 | 2016-01-19 | A kind of vertical shaft upper curved section concrete construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105648992B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100649A (en) * | 2017-06-24 | 2017-08-29 | 浙江华东工程咨询有限公司 | A kind of construction technology for inclined shaft concreting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5891293A (en) * | 1981-11-26 | 1983-05-31 | 日立造船株式会社 | Concrete placing method of shaft type buried hydraulic pressure iron pipe |
| CN202117037U (en) * | 2011-02-24 | 2012-01-18 | 中国水电顾问集团华东勘测设计研究院 | Structure convenient for construction of inclined hole below diversion tunnel space bending pipe |
| CN202926386U (en) * | 2012-11-13 | 2013-05-08 | 广汉金达隧道机械有限公司 | Rotating traction lifting device of inclined shaft slipform |
| CN104727833A (en) * | 2015-01-19 | 2015-06-24 | 中国葛洲坝集团股份有限公司 | Method of conducting steel bar installation on bend section through bend-section steel bar trolley |
-
2016
- 2016-01-19 CN CN201610033972.XA patent/CN105648992B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5891293A (en) * | 1981-11-26 | 1983-05-31 | 日立造船株式会社 | Concrete placing method of shaft type buried hydraulic pressure iron pipe |
| CN202117037U (en) * | 2011-02-24 | 2012-01-18 | 中国水电顾问集团华东勘测设计研究院 | Structure convenient for construction of inclined hole below diversion tunnel space bending pipe |
| CN202926386U (en) * | 2012-11-13 | 2013-05-08 | 广汉金达隧道机械有限公司 | Rotating traction lifting device of inclined shaft slipform |
| CN104727833A (en) * | 2015-01-19 | 2015-06-24 | 中国葛洲坝集团股份有限公司 | Method of conducting steel bar installation on bend section through bend-section steel bar trolley |
Non-Patent Citations (2)
| Title |
|---|
| 丁勇: "巴贡水电站引水隧洞竖井开挖施工", 《四川水力发电》 * |
| 罗加贵等: "特大型竖井混凝土滑模施工", 《云南水力发电》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107100649A (en) * | 2017-06-24 | 2017-08-29 | 浙江华东工程咨询有限公司 | A kind of construction technology for inclined shaft concreting |
| CN107100649B (en) * | 2017-06-24 | 2019-12-17 | 浙江华东工程咨询有限公司 | Construction process for inclined shaft concrete pouring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105648992B (en) | 2017-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104389610B (en) | A kind of ultrashort step construction method of traversing operation freeway tunnel | |
| CN101614125B (en) | Construction method of V-level surrounding rock tunnel | |
| CN104790302B (en) | A kind of high pier continuous rigid frame bridge end bay straightway Hanging Basket coordinates bent cap support integral construction method | |
| CN103510702B (en) | Steel core concrete column pin type concrete pouring construction method | |
| CN107905114B (en) | A kind of construction method of large span Successive interference cancellation | |
| CN110821513B (en) | Construction method for performing advanced grouting and supporting on tunnel local collapse | |
| CN103437791B (en) | The mounting method of buried water stop in a kind of tunnel lining trolley termination | |
| CN109025295A (en) | A kind of high-altitude long-span steel reinforced concrete corridor construction method | |
| CN103882813A (en) | Corbel bracket platform for bridge pier and transverse straining beam synchronous construction and construction method of corbel bracket platform | |
| CN103953361A (en) | Clearance strengthening system for serious cracks of existing tunnel arch lining | |
| CN105525753A (en) | Method and structure for simultaneously constructing constructional column and main body structure | |
| CN103938871B (en) | A kind of construction method adopting the steel core concrete column bonded prestress frame beam structure of reinforced concrete ring beam joint | |
| CN109162741B (en) | Method for synchronous construction of shield penetrating piston air duct and upper structure of piston air duct | |
| CN102767378B (en) | Double-column type tunnel portal method for bent frame construction tunnel | |
| CN102828506A (en) | Ultra-deep large-section square support pile and construction method thereof | |
| CN105648992A (en) | Concrete construction method for upper bending segment of shaft | |
| CN204715764U (en) | The structure that a kind of constructional column and agent structure are constructed simultaneously | |
| CN116677419A (en) | Inclined shaft turning positive tunnel three-fork support design of tunnel and roof-picking construction method thereof | |
| CN106592598A (en) | Same-layer double-beam large-diameter steel pipe support and deep foundation pit combined inner support formed thereby | |
| CN112145195B (en) | Construction method of double-layer orthogonal frame culvert in underground excavation station | |
| CN108193706A (en) | A kind of downward construction concrete pouring procedure of part contrary sequence method vertical structure | |
| CN106245531A (en) | Steel structural bridge installation method is hung under bilateral derrick type | |
| CN105780938A (en) | Vertical construction seam construction method of core tube bottom board for super high-rise | |
| CN206667292U (en) | It is a kind of to justify pile foundation counterfort wall station road structure close to bridge pier | |
| CN109519009A (en) | The top-down construction method of the above structure in the ground of large-scale pump house |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |